Excavating device for underground diaphragm wall

Abstract

The invention discloses an excavating device for an underground diaphragm wall, and relates to the technical field of excavating equipment, the excavating device comprises a rack, two suspension cables and two buckets, the tops of the two buckets are fixedly connected with two fixed beams, a first rotating frame is fixedly connected between the two fixed beams on the left side, and a second rotating frame is fixedly connected between the two fixed beams on the right side; a second rotating frame is fixedly connected between the two fixing beams on the right side, the first rotating frame is rotationally installed on the outer side of the second rotating frame, and a first rotating shaft is rotationally connected into the second rotating frame. The structure for driving the two buckets to move in the excavating device is arranged on the outer sides of the buckets and does not occupy the internal storage space of the buckets, meanwhile, soil blocks excavated by the two buckets can be cut up by the multiple cutters, the internal storage space of the two buckets is not occupied, the soil excavating quantity of the two buckets is guaranteed, and the working efficiency is improved. The number of parts directly affected by soil blocks in the excavating device is reduced, and the service life of the excavating device is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of excavating equipment, and specifically relates to an excavating device for underground continuous walls. BACKGROUND

[0002] An underground continuous wall is a foundation engineering that uses a kind of trenching machinery on the ground, along the axis of a deep excavation engineering, under the condition of mud protection, a long and narrow deep trench is excavated, after trench cleaning, a reinforcement cage is hoisted in the trench, then the trench is filled with underwater concrete by the guide pipe method to form a unit trench section, and the process is repeated to form a continuous reinforced concrete wall underground, which serves as a water interception, anti-seepage, load-bearing and water retaining structure. During the construction of an underground continuous wall, a common excavating device is used for operation. For example, the invention with the announcement number CN116657686B relates to the technical field of excavating devices and discloses a combined structure underground continuous wall excavating device and method, which solves the problem that soil blocks fall onto the car hopper, the contact area is small when the soil blocks are in instantaneous contact with the car hopper, resulting in large force on local positions, and the gap between large soil blocks is large, making it inconvenient to load more soil in the car hopper. It includes a rack, a hoisting cable fixedly connected to the rack, and two excavating buckets below the rack. The rack is fixedly connected with a first hydraulic cylinder.

[0003] Taking a continuous wall excavating device as an example, in the actual application process of the continuous wall excavating device, in order to reduce the impact of soil inside the excavating bucket on the vehicle and increase the amount of soil loaded in the vehicle hopper, a soil breaking and scattering structure is provided inside the excavating bucket. However, the provision of the soil breaking and scattering structure not only affects the soil carrying capacity inside the excavating bucket, but also directly contacts the liquid and hard substances in the soil with each part of the soil breaking and scattering structure, affecting the operation of the transmission parts of the soil breaking and scattering structure, resulting in low practical application value of the soil breaking and scattering structure. SUMMARY

[0004] The purpose of the present application is to provide an excavating device for underground continuous walls to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an excavating device for underground continuous walls, comprising a rack, two hoisting cables and two excavating buckets, two fixed beams are fixedly connected to the top of each of the two excavating buckets, a rotating frame one is fixedly connected between the two fixed beams on the left side, a rotating frame two is fixedly connected between the two fixed beams on the right side, the rotating frame one is rotatably installed on the outer side of the rotating frame two, a rotating shaft one is rotatably connected inside the rotating frame two, a transmission assembly is provided between the rotating shaft one, the rotating frame two, the rotating frame one and the rack, a plurality of cutter installation grooves are formed on the outer side of the rotating shaft one, a cutter is penetratingly arranged inside each of the plurality of cutter installation grooves, a driving assembly is installed between the plurality of cutters, and a maintenance assembly is provided between the transmission assembly and the top of the inner cavity of the rack.

[0006] Preferably, the pendant cable is fixedly installed on the top of the frame, and a plurality of excavating shovels are fixedly connected to the left and right sides of the bottom of the bucket.

[0007] Preferably, the rotating shaft is rotatably connected to the inside of the frame, and the left and right sides of the bottom of the frame are provided with a plurality of grooves, and the bottom ends of the plurality of cutters extend between the two buckets.

[0008] Preferably, the transmission assembly comprises two transmission gears one, two transmission gears two, a transmission gear three, a driving motor, a hydraulic cylinder one and a hydraulic cylinder two, the two transmission gears one are fixedly installed on the two ends of the outside of the rotating frame one, the top of the two transmission gears one is engaged with a transmission gear plate three, the two transmission gear plates three are fixedly connected with a U-shaped frame two, and the hydraulic cylinder two is fixedly installed in the inside of the frame and the piston end of the hydraulic cylinder two is fixedly connected with the U-shaped frame two.

[0009] Preferably, the two transmission gears two are fixedly installed on the two ends of the outside of the rotating frame two, the top of the two transmission gears two is engaged with a transmission gear plate two, the two transmission gear plates two are fixedly connected with a U-shaped frame one, the hydraulic cylinder one is fixedly installed in the inside of the frame and the piston end of the hydraulic cylinder one is fixedly connected with the U-shaped frame one, the inside of the frame is fixedly connected with two limiting frames three, the two limiting frames three penetrate the U-shaped frame two and the U-shaped frame one, the inside of the transmission gear plate three and the transmission gear plate two is provided with a limiting frame two, and the limiting frame two is fixedly installed in the inside of the frame.

[0010] Preferably, the transmission gear three is fixedly installed on one end of the outside of the rotating shaft one, the top of the transmission gear three is engaged with a transmission gear plate one, the inside of the transmission gear plate one is provided with two limiting frames one, the limiting frames one are fixedly installed in the inside of the frame, the top of the transmission gear plate one is provided with a plurality of tooth grooves, the top of the transmission gear plate one is engaged with a transmission gear four, and the outside of the driving motor is fixedly connected with a fixed frame one.

[0011] Preferably, the top of the fixed frame one is fixedly connected with a transmission, the output end of the driving motor is fixedly connected with the input end of the transmission, the output end of the transmission is fixedly connected with a transmission shaft two, the transmission gear four is fixedly installed on the outside of the transmission shaft two, the output end of the driving motor is provided with a brake, and the brake is fixedly installed on the top of the fixed frame one.

[0012] Preferably, the maintenance assembly comprises a liquid storage tank fixedly connected to the top of the inner cavity of the rack and a shunt tank fixedly connected to the top of the U-shaped frame, one side of the liquid storage tank is fixedly connected with an electromagnetic valve, the top of the inner cavity of the rack is fixedly connected with a liquid pumping pump, the water inlet end of the liquid pumping pump is fixedly connected with the electromagnetic valve, and a telescopic pipe is fixedly and communicatively connected between the water outlet end of the liquid pumping pump and the shunt tank.

[0013] Preferably, the bottom of the shunt tank is fixedly and communicatively connected with a plurality of flow guide capillary tubes, the bottom end of the flow guide capillary tubes is fixedly and communicatively connected with a flow guide tank, water-absorbing sponges are fixedly embedded on both sides of the inner flow guide tank, and the flow guide tank corresponds to the cutter one by one.

[0014] Preferably, the driving assembly comprises a chain lifting device fixedly connected to the top of the inner cavity of the rack, a fixed frame two fixedly connected to the bottom end of the chain of the chain lifting device, and two fixed frame threes fixedly connected to the two ends of the fixed frame two, the top ends of the plurality of cutters are rotatably connected to the bottom of the fixed frame two, a limiting sliding rail is sleeved on the outer side of the fixed frame three, the limiting sliding rail is fixedly installed in the inner part of the rack, a double-shaft air cylinder is fixedly connected to the inner part of the fixed frame three, friction plates are fixedly connected to the two piston ends of the double-shaft air cylinder, and a plurality of electromagnets are fixedly embedded in the bottom of the fixed frame two.

[0015] Compared with the prior art, the application has the following beneficial effects: 1. When the two buckets enter the combined state, the bottom ends of the plurality of cutters are controlled to be close to the inner wall of the bucket, the driving motor is controlled to alternately perform forward rotation and reverse rotation during the transportation of the soil between the two buckets by the excavation device, the rotating shaft one alternately performs clockwise rotation and counterclockwise rotation, the bottom end of the cutter reciprocates, the chain lifting device is controlled to work to drive the fixed frame two and the cutter to move up and down, the relative distance between the reciprocating cutter bottom end and the inner wall of the bucket is within a preset range, the plurality of cutters effectively break the soil excavated by the two buckets, thereby reducing the impact force received by the unit area of the bucket, the gap between small soil blocks is small, and the loading capacity of the bucket is improved.

[0016] 2. When the excavation device performs excavation work again, the rotating shaft one is reset by controlling the driving motor to work, the cutter returns to the vertical state with the top of the inner cavity of the rack, then the fixed frame two and the plurality of cutters installed at the bottom of the fixed frame two are moved upward by controlling the chain lifting device to work, the bottom end of the cutter enters the inner part of the rack, the structure for driving the movement of the two buckets in the excavation device is arranged outside the bucket by cooperation of the transmission assembly and the driving assembly, the internal storage space of the bucket is not occupied, the plurality of cutters can cut the soil blocks excavated by the two buckets, the internal storage space of the two buckets is not occupied, the number of excavated soil by the two buckets is ensured, the number of parts directly affected by the soil blocks in the excavation device is reduced, and the service life of the excavation device is ensured.

[0017] 3. When using this application, with the cutter perpendicular to the top of the inner cavity of the frame, multiple electromagnets fixedly embedded at the bottom of the fixed frame 2 are controlled to work. The electromagnets in contact with the iron cutter are magnetically attracted and fixed to the cutter, keeping the cutter perpendicular to the top of the inner cavity of the frame. The hydraulic cylinder 1 is controlled to work, driving the U-shaped frame 1 to move towards the fixed frame 2, and the guide box moves towards the fixed frame 2. The guide box corresponds to the cutter, so that the guide box is fitted onto the outside of the cutter. Then, the chain lifting device is controlled to work, driving the fixed frame 2 and multiple cutters to move up and down. The part of the cutter that contacts the soil needs to pass through the cutter mounting slot opened in the rotating shaft 1 before it can enter the inner cavity of the frame. The outer wall of the cutter contacts the rotating shaft 1. After the soil adhering to the outside of the cutter is cleaned by the rotating shaft 1, the cutter can pass through the inside of the guide box. During the process of the cutter passing through the inside of the guide box, the water-absorbing sponge applies lubricating oil to the outside of the cutter. Through the cooperation of the transmission component and the maintenance component, the cutter is quickly maintained and serviced, slowing down the rate of corrosion and wear on the outer wall of the cutter edge, and ensuring the service life of the cutter. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the frame structure of the present invention; Figure 3 This is a schematic diagram of the structure of the second U-shaped frame of the present invention; Figure 4 This is a schematic diagram of the structure of the rotating frame of the present invention; Figure 5 This is a schematic diagram showing the separation structure of rotating frame one, rotating frame two, and rotating shaft one of the present invention; Figure 6 This is a schematic diagram of the structure of the rotating frame II of the present invention; Figure 7 This is a schematic diagram of the structure of the second fixing frame of the present invention; Figure 8 This is a cross-sectional view of the fixing frame three of the present invention; Figure 9 This is a partial structural schematic diagram of the liquid storage tank of the present invention; Figure 10 This is a schematic diagram of the structure of the U-shaped frame of the present invention; Figure 11 for Figure 10 Enlarged view of the structure at point A; Figure 12 This is a schematic diagram of the flow guide box of the present invention; Figure 13 for Figure 2 Enlarged view of the structure at point B; Figure 14 for Figure 7 Enlarged view of the structure at point C.

[0019] Labels in the diagram: 1. Frame; 2. Lifting cable; 3. Bucket; 4. Shovel; 5. Fixed beam; 6. Rotating frame one; 7. Transmission gear one; 8. Rotating frame two; 9. Transmission gear two; 10. Rotating shaft one; 11. Tool mounting slot; 12. Transmission gear three; 13. Transmission gear plate one; 14. Limiting frame one; 15. Gear groove; 16. Transmission gear four; 17. Transmission shaft two; 18. Gearbox; 19. Drive motor; 20. Fixed frame one; 21. Brake; 22. Transmission gear plate two; 23. Transmission gear 24. Plate 3; 25. Limiting frame 2; 26. U-shaped frame 1; 27. Hydraulic cylinder 1; 28. U-shaped frame 2; 29. ​​Hydraulic cylinder 2; 30. Limiting frame 3; 31. Chain lifting equipment; 32. Fixed frame 2; 33. Fixed frame 3; 34. Dual-axis pneumatic cylinder; 35. Friction plate; 36. Limiting slide rail; 37. Cutting tool; 38. Liquid storage tank; 39. Solenoid valve; 40. Liquid pump; 41. Telescopic tube; 42. Diverter box; 43. Flow guide tube; 44. Flow guide box; 45. Absorbent sponge; 46. Electromagnet. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Figures 1-14 As shown, the present invention provides a technical solution for an excavation device for underground continuous walls, including a frame 1, two hoisting cables 2 and two buckets 3. Two fixed beams 5 are fixedly connected to the top of each of the two buckets 3. A rotating frame 6 is fixedly connected between the two fixed beams 5 on the left side, and a rotating frame 8 is fixedly connected between the two fixed beams 5 on the right side. The rotating frame 6 is rotatably mounted on the outside of the rotating frame 8. A rotating shaft 10 is rotatably connected inside the rotating frame 8. A transmission assembly is provided between the rotating shaft 10, the rotating frame 8 and the rotating frame 6. Multiple tool mounting slots 11 are opened on the outside of the rotating shaft 10. Tools 36 are inserted into the multiple tool mounting slots 11. A drive assembly is installed between the multiple tools 36. A maintenance assembly is provided between the transmission assembly and the top of the inner cavity of the frame 1.

[0022] The excavation device consists of a frame 1, two lifting cables 2, two buckets 3, four fixed beams 5, rotating frame one 6, rotating frame two 8, rotating shaft one 10, transmission components, multiple cutting tools 36, drive components, maintenance components, etc. Connecting the excavation device to a human-machine interface to control its operation is an existing technology and will not be described in detail here.

[0023] The application method of the excavation device is as follows: Example 1, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown: The hoisting cable 2 is fixedly installed on the top of the frame 1. The hoisting cable 2 is used to connect the crane. Multiple shovels 4 are fixedly connected to the bottom of the outer side of both buckets 3. The multiple shovels 4 on the left side and the multiple shovels 4 on the right side are staggered. The ends of the shovels 4 are relatively sharp. The arrangement of multiple shovels 4 increases the speed of the buckets 3 digging the soil.

[0024] Rotating shaft 10 is rotatably connected inside frame 1 and can only rotate on its own axis. Two fixed beams 5 are fixedly connected to the top of each of the two buckets 3. Rotating frame 1 6 is fixedly connected between the two fixed beams 5 on the left side, and rotating frame 2 8 is fixedly connected between the two fixed beams 5 on the right side. Rotating frame 1 6 is rotatably installed on the outside of rotating frame 2 8. Rotating shaft 10 is rotatably connected inside rotating frame 2 8, so both rotating frame 1 6 and rotating frame 2 8 can rotate on their own axis in place. The rotation of rotating frame 1 6 drives the left bucket 3 to rotate through the two fixed beams 5 on the left side, and the rotation of rotating frame 2 8 drives the right bucket 3 to rotate through the two fixed beams 5 on the right side. Furthermore, slots are provided at the bottom left and bottom right sides of frame 1. These slots provide channels for the buckets 3 and the fixed beams 5 that are fixedly connected to the buckets 3, allowing the two buckets 3 to open and close effectively.

[0025] The transmission assembly consists of two transmission gears 1-7, two transmission gears 2-9, a transmission gear 3-12, a drive motor 19, a hydraulic cylinder 1-26, and a hydraulic cylinder 2-28. The two transmission gears 1-7 are fixedly installed at both ends of the outer side of the rotating frame 1-6. The top of each of the two transmission gears 1-7 is meshed with a transmission gear plate 3-23. A U-shaped frame 2-27 is fixedly connected between the two transmission gear plates 3-23. The U-shaped frame 2-27 enables the two transmission gear plates 3-23 to move synchronously. The hydraulic cylinder 2-28 is fixedly installed inside the frame 1, and the piston end of the hydraulic cylinder 2-28 is fixedly connected to the U-shaped frame 2-27. Therefore, by controlling the operation of the hydraulic cylinder 2-28, the U-shaped frame 2-27 and the two transmission gear plates 3-23 can be controlled to move synchronously left and right, causing the rotating frame 1-6 to rotate clockwise or counterclockwise, and the left bucket 3 to rotate clockwise or counterclockwise.

[0026] Two transmission gears 29 are fixedly installed at both ends of the outer side of the rotating frame 28. The top of each transmission gear 29 is meshed with a transmission tooth plate 22. A U-shaped frame 25 is fixedly connected between the two transmission tooth plates 22. The U-shaped frame 25 enables the two transmission tooth plates 22 to move synchronously left and right. A hydraulic cylinder 26 is fixedly installed inside the frame 1 and the piston end of the hydraulic cylinder 26 is fixedly connected to the U-shaped frame 25. By controlling the operation of the hydraulic cylinder 26, the U-shaped frame 25 and the two transmission tooth plates 22 can be controlled to move synchronously left and right. The rotating frame 28 rotates clockwise or counterclockwise, and the right bucket 3 rotates clockwise or counterclockwise.

[0027] In summary, by controlling the coordinated operation of hydraulic cylinder 26 and hydraulic cylinder 28, the two buckets 3 are brought closer together to dig soil. When the two buckets 3 come into contact with each other, they enter a merged state, moving away from each other. When both buckets 3 rotate 45°, they enter an open state, and soil is discharged between them. Furthermore, the rotation angles of rotating frame 28 and rotating frame 16 are limited, and they will not come into contact with the cutting tool 36.

[0028] Two limiting frames 29 are fixedly connected inside the frame 1. Both limiting frames 29 pass through the U-shaped frame 27 and the U-shaped frame 25, allowing the U-shaped frame 27 and the U-shaped frame 25 to move stably left and right. Limiting frames 24 are also installed inside the transmission gear plate 23 and the transmission gear plate 22. The limiting frames 24 are fixedly installed inside the frame 1, allowing the transmission gear plate 23 and the transmission gear plate 22 to move left and right. Through the cooperation of the limiting frames 29 and the limiting frames 24, the stress generated by the working of the bucket 3 is dispersed, ensuring the service life of each part in the transmission assembly.

[0029] Example 2, as Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 13 As shown: In the drive assembly, the chain lifting device 30 is fixedly installed on the top of the inner cavity of the frame 1. The bottom end of the chain lifting device 30 is fixedly connected to the second fixed frame 31, and both ends are fixedly connected to the third fixed frame 32. The tops of multiple cutters 36 are rotatably connected to the bottom of the second fixed frame 31. Controlling the chain lifting device 30 to work controls the second fixed frame 31 to move up and down, and the cutters 36 to move up and down. During the process of the two buckets 3 entering the combined state, the chain lifting device 30 is controlled to work to push the second fixed frame 31 and the multiple cutters 36 to move down. After the two buckets 3 enter the combined state, the bottom ends of the multiple cutters 36 are close to the inner wall of the bucket 3. Multiple cutter mounting slots 11 are opened on the outside of the first rotating shaft 10. The multiple cutters 36 extend through the multiple cutter mounting slots 11 and extend to the bottom of the inner cavity of the frame 1. Therefore, during the rotation of the first rotating shaft 10, the multiple cutters 36 rotate accordingly, while the second rotating frame 8 and the first rotating frame 6 return to their initial state. The cutters 36 rotate within the preset angle range without colliding with the second rotating frame 8 and the first rotating frame 6.

[0030] Since the transmission gear 312 is fixedly installed on one end of the outer side of the rotating shaft 10, the transmission gear 312 and the rotating shaft 10 rotate synchronously. Two limiting frames 14 are installed inside the transmission gear plate 13 meshing with the top of the transmission gear 312. The limiting frames 14 are fixedly installed inside the frame 1 to support the transmission gear plate 13, allowing it to move stably left and right. The top of the transmission gear plate 13 has multiple tooth grooves 15, which mesh with the transmission gear 416. A gearbox 18 is fixedly connected to the top of the fixed bracket 20 between the outer side of the drive motor 19 and the inner wall of the frame 1. The output end of the drive motor 19 is connected to the gearbox. The input end of the transmission 18 is fixedly connected to the transmission shaft 17, which is fixedly connected to the output end of the transmission gear 18. The transmission shaft 17 is fixedly installed inside the transmission gear 16. The transmission 18 controls the operation of the drive motor 19. After the transmission 18 changes the speed of the rotational force output by the drive motor 19, the rotational force is applied to the transmission shaft 17. The rotation of the transmission shaft 17 drives the transmission gear 16 to rotate. The transmission gear 16 drives the meshing transmission gear plate 13 to move. The movement of the transmission gear plate 13 drives the transmission gear 12 to rotate. The rotating shaft 10 fixedly connected inside the transmission gear 12 rotates. Therefore, by controlling the drive motor 19 to work in the forward or reverse direction, the rotating shaft 10 can be rotated clockwise or counterclockwise.

[0031] In summary, when the two buckets 3 enter the combined state, the bottom ends of multiple cutters 36 are controlled to approach the inner wall of the bucket 3. During the process of controlling the excavation device to transport soil between the two buckets 3, the drive motor 19 is controlled to alternately rotate forward and reverse, causing the rotating shaft 10 to alternately rotate clockwise and counterclockwise. The bottom ends of the cutters 36 reciprocate. At the same time, the chain lifting device 30 is controlled to drive the fixed frame 31 and the cutters 36 to move up and down, so that the relative distance between the bottom ends of the reciprocating cutters 36 and the inner wall of the bucket 3 is within a preset range. This allows the multiple cutters 36 to effectively break up the soil excavated by the two buckets 3, thereby reducing the impact force per unit area of ​​the bucket. The gaps between small soil clods are smaller, increasing the loading capacity of the bucket.

[0032] When the excavating device resumes excavation, the drive motor 19 is activated to reset the rotating shaft 10, restoring the cutter 36 to its vertical position relative to the top of the inner cavity of the frame 1. Then, the chain lifting device 30 is activated to move the fixed frame 31 and the multiple cutters 36 mounted at its bottom upwards, allowing the bottom ends of the cutters 36 to enter the frame 1. Through the cooperation of the transmission and drive components, the structure driving the two buckets 3 is positioned outside the buckets 3, without occupying internal storage space. This allows the multiple cutters 36 to shred the soil excavated by the two buckets 3 without taking up internal storage space, ensuring the amount of soil excavated by the two buckets 3, reducing the number of parts directly affected by the soil, and extending the lifespan of the excavating device.

[0033] A brake 21 is fitted on the outside of the output end of the drive motor 19. The brake 21 is fixedly installed on the top of the fixed frame 20. After the drive motor 19 finishes working, the brake 21 is controlled to work to brake the output end of the drive motor 19. The transmission gear 16 is braked, the transmission gear plate 13 is braked, the transmission gear 12 and the rotating shaft 10 are braked.

[0034] The limiting slide rail 35, which is sleeved on the outside of the fixed frame 32, is fixedly installed inside the machine frame 1. The fixed frame 2 31 is limited by the two fixed frames 32 and the two limiting slide rails 35, so that the fixed frame 2 31 can move up and down stably. The two piston ends of the dual-axis pneumatic cylinder 33, which is fixedly connected inside the fixed frame 32, are both fixedly connected to friction plates 34. The dual-axis pneumatic cylinder 33 is controlled to push the two friction plates 34 against the inner wall of the limiting slide rail 35, thus braking the fixed frame 2 31. The up and down position of the tool 36 is restricted, ensuring that the tool 36 stays stably inside the machine frame 1.

[0035] Example 3, as Figure 3 , Figure 7 , Figure 10 , Figure 11 , Figure 12 andFigure 14 As shown: In the maintenance assembly, the liquid storage tank 37 and the liquid pump 39 are both fixedly installed on the top of the inner cavity of the frame 1. A solenoid valve 38 is fixedly connected to one side of the liquid storage tank 37. The water inlet of the liquid pump 39 is fixedly connected to the solenoid valve 38. A telescopic pipe 40 is fixedly connected between the water outlet of the liquid pump 39 and the distribution box 41. The distribution box 41 is fixedly installed on the top of the U-shaped frame 25. The solenoid valve 38 is controlled to open, and the liquid pump 39 is controlled to draw lubricating oil from the inside of the liquid storage tank 37 through the solenoid valve 38. The liquid pump 39 delivers the lubricating oil to the inside of the distribution box 41 through the telescopic pipe 40.

[0036] Multiple flow guide tubes 42 are fixedly connected to the bottom of the flow divider box 41. The bottom end of the flow guide tube 42 passes through the U-shaped frame 25 and is fixedly connected to the flow guide box 43. Water-absorbing sponges 44 are fixedly embedded on both sides inside the flow guide box 43. As the lubricating oil inside the flow divider box 41 increases, the hydraulic pressure inside the flow guide box 43 increases, and the water-absorbing sponges 44 absorb the lubricating oil.

[0037] Subsequently, with the cutter 36 remaining perpendicular to the top of the inner cavity of the frame 1, the multiple electromagnets 45 fixedly embedded at the bottom of the second fixing frame 31 are activated. The electromagnets 45 in contact with the iron cutter 36 use magnetic attraction to fix the cutter 36, keeping it perpendicular to the top of the inner cavity of the frame 1. The hydraulic cylinder 26 is activated, driving the U-shaped frame 25 to move towards the second fixing frame 31, and the guide box 43 moves towards the second fixing frame 31. The guide box 43 corresponds to the cutter 36, allowing it to be fitted onto the outside of the cutter 36. Then, the chain lifting device 30 is activated, driving the second fixing frame 31 and the multiple cutters 36 to move up and down. The part of the cutter 36 that contacts the soil needs to pass through the cutter mounting slot 11 opened in the rotating shaft 10 before it can enter the interior of the frame 1. The outer wall of the cutter 36 contacts the rotating shaft 10. After the soil adhering to the outside of the cutter 36 is cleaned by the rotating shaft 10, the cutter 36 can pass through the inside of the guide box 43. During the process of the cutter 36 passing through the inside of the guide box 43, the water-absorbing sponge 44 applies lubricating oil to the outside of the cutter 36. When the chain lifting device 30 is working, the cutter 36 reciprocates for a period of time. After the bottom end of the cutter 36 extends through the cutter mounting groove 11 to the bottom of the rotating shaft 10, the chain lifting device 30 stops working, and the electromagnet 45 stops working. This completes the application of lubricating oil to the outside of multiple cutters 36. Through the cooperation of the transmission component and the maintenance component, the cutter 36 can be quickly maintained and repaired, the corrosion and wear rate of the outer wall of the cutter 36 is slowed down, and the service life of the cutter 36 is guaranteed.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An excavation device for diaphragm walls, comprising a frame (1), two lifting cables (2) and two buckets (3), characterized in that: Two fixed beams (5) are fixedly connected to the top of each of the two buckets (3). A rotating frame one (6) is fixedly connected between the two fixed beams (5) on the left side, and a rotating frame two (8) is fixedly connected between the two fixed beams (5) on the right side. The rotating frame one (6) is rotatably installed on the outside of the rotating frame two (8). A rotating shaft one (10) is rotatably connected inside the rotating frame two (8). A transmission assembly is provided between the rotating shaft one (10), the rotating frame two (8), and the rotating frame one (6) and the frame (1). Multiple tool mounting slots (11) are opened on the outside of the rotating shaft one (10). A tool (36) is inserted inside each of the multiple tool mounting slots (11). A drive assembly is installed between the multiple tools (36). A maintenance assembly is provided between the transmission assembly and the top of the inner cavity of the frame (1).

2. The excavation device for diaphragm walls according to claim 1, characterized in that: The hoisting cable (2) is fixedly installed on the top of the frame (1). Multiple shovels (4) are fixedly connected to the bottom of the outer sides of the two buckets (3). The multiple shovels (4) on the left side and the multiple shovels (4) on the right side are staggered.

3. The excavation device for diaphragm walls according to claim 1, characterized in that: The rotating shaft (10) is rotatably connected to the inside of the frame (1). The bottom left and bottom right sides of the frame (1) are provided with slots, and the bottom ends of the multiple cutters (36) extend between the two buckets (3).

4. The excavation device for diaphragm walls according to claim 1, characterized in that: The transmission assembly includes two transmission gears (7), two transmission gears (9), a transmission gear (12), a drive motor (19), a hydraulic cylinder (26), and a hydraulic cylinder (28). The two transmission gears (7) are fixedly installed at both ends of the outer side of the rotating frame (6). The top of each of the two transmission gears (7) is meshed with a transmission gear plate (23). A U-shaped frame (27) is fixedly connected between the two transmission gear plates (23). The hydraulic cylinder (28) is fixedly installed inside the frame (1), and the piston end of the hydraulic cylinder (28) is fixedly connected to the U-shaped frame (27).

5. The excavation device for diaphragm walls according to claim 4, characterized in that: Two transmission gears (9) are fixedly installed on the outer ends of the rotating frame (8). The top of each of the two transmission gears (9) is meshed with a transmission gear plate (22). A U-shaped frame (25) is fixedly connected between the two transmission gear plates (22). The hydraulic cylinder (26) is fixedly installed inside the frame (1) and the piston end of the hydraulic cylinder (26) is fixedly connected to the U-shaped frame (25). Two limiting frames (29) are fixedly connected inside the frame (1). Both limiting frames (29) penetrate the U-shaped frame (27) and the U-shaped frame (25). Limiting frames (24) are inserted inside the transmission gear plate (23) and the transmission gear plate (22). The limiting frames (24) are fixedly installed inside the frame (1).

6. The excavation device for diaphragm walls according to claim 4, characterized in that: The transmission gear three (12) is fixedly installed on one side of the outer side of the rotating shaft one (10). The top of the transmission gear three (12) is meshed with the transmission gear plate one (13). Two limit frames one (14) are inserted inside the transmission gear plate one (13). The limit frames one (14) are fixedly installed inside the frame (1). The top of the transmission gear plate one (13) has multiple tooth grooves (15). The top of the transmission gear plate one (13) is meshed with the transmission gear four (16). The outer side of the drive motor (19) is fixedly connected to the inner wall of the frame (1) with a fixing frame one (20).

7. The excavation device for diaphragm walls according to claim 6, characterized in that: The top of the first fixed frame (20) is fixedly connected to the gearbox (18), the output end of the drive motor (19) is fixedly connected to the input end of the gearbox (18), the output end of the gearbox (18) is fixedly connected to the transmission shaft (17), the transmission gear (16) is fixedly installed on the outside of the transmission shaft (17), the output end of the drive motor (19) is fitted with a brake (21), and the brake (21) is fixedly installed on the top of the first fixed frame (20).

8. The excavation device for diaphragm walls according to claim 5, characterized in that: The maintenance components include a liquid storage tank (37) fixedly connected to the top of the inner cavity of the frame (1) and a diversion box (41) fixedly connected to the top of the U-shaped frame (25). A solenoid valve (38) is fixedly connected to one side of the liquid storage tank (37). A liquid pump (39) is fixedly connected to the top of the inner cavity of the frame (1). The inlet end of the liquid pump (39) is fixedly connected to the solenoid valve (38). A telescopic pipe (40) is fixedly connected between the outlet end of the liquid pump (39) and the diversion box (41).

9. The excavation device for diaphragm walls according to claim 8, characterized in that: The bottom of the diversion box (41) is fixedly connected to multiple flow guide tubes (42), and the bottom end of the flow guide tubes (42) is fixedly connected to a flow guide box (43). Both sides of the flow guide box (43) are fixedly embedded with water-absorbing sponges (44). The flow guide box (43) corresponds one-to-one with the cutter (36).

10. The excavation device for diaphragm walls according to claim 1, characterized in that: The drive assembly includes a chain lifting device (30) fixedly connected to the top of the inner cavity of the frame (1), a second fixed frame (31) fixedly connected to the bottom of the chain of the chain lifting device (30), and two third fixed frames (32) fixedly connected to both ends of the second fixed frame (31). The tops of the multiple cutters (36) are rotatably connected to the bottom of the second fixed frame (31). The third fixed frame (32) is fitted with a limiting slide rail (35) on the outside. The limiting slide rail (35) is fixedly installed inside the frame (1). A dual-axis pneumatic cylinder (33) is fixedly connected inside the third fixed frame (32). Friction plates (34) are fixedly connected to the two piston ends of the dual-axis pneumatic cylinder (33). Multiple electromagnets (45) are fixedly embedded at the bottom of the second fixed frame (31).

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