A municipal drainage ditch dredging machine

Abstract

The present invention relates to the technical field and discloses a municipal drainage ditch ditch dredging machine, comprising: a frame and a hydraulic pump arranged in the frame, a generator fixed in the frame, an oil tank fixed in the frame, and also comprising: a dredging head located on the frame; a switching member slidably arranged in the dredging head and used for switching between two dredging modes; the present invention uses an impact rod as a detection core and relies on the water pressure of a dredging pipe to construct an adaptive blockage clearing circulation mechanism; when the dredging head encounters a blockage, the impact rod is impacted and retracted to directly trigger the mode switching, and the instant linkage of blockage detection and processing can be achieved without external control; by utilizing the change of water pressure in the dredging pipe, the dredging head is first pushed backward and charged by the reaction force of the water spraying through the first impact nozzle, and then the water pressure is increased to drive the displacement of the switching piston in the switching cylinder, and the second impact nozzle is opened through the impact liquid pipe and the impact liquid cylinder transmission, and the dredging head is pushed by the reaction force of the water flow to complete the "backward-impact" clearing action.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging machines, and in particular to a dredging machine for municipal drainage ditches. Background Art

[0002] In the routine maintenance of municipal drainage systems, ditch ditch unclogging is a key step in ensuring smooth drainage. Existing ditch unclogging machines often rely on sprinkler heads as their core actuators. Their operating principle is to insert the sprinkler head into the ditch and use the impact of high-pressure water flow to directly dislodge the blockage, achieving initial unclogging. However, this single-use dredging method, which relies solely on the sprinkler head's push, has many limitations in practical application and cannot meet the needs of efficient unclogging in complex ditch environments.

[0003] Existing dredging machines feature simple spray heads, typically with a single spray direction and fixed flow intensity, making them inadequate for handling different types of blockages. For example, when encountering hard silt or tangled debris, a fixed-intensity water flow struggles to effectively break up or dislodge the blockage. Instead, the simple pushing action can compact the blockage, exacerbating the blockage. Furthermore, the spray head lacks a mechanism to detect the effectiveness of the blockage removal process, making it impossible to determine whether the blockage has been completely cleared. Repeated manual verification is often required, increasing operation time and reducing dredging efficiency.

[0004] Existing sprinkler heads only offer one-way push-in during the dredging process. If a single push fails to clear the blockage, manual manipulation is required to withdraw the sprinkler head and reposition it, making the process cumbersome. Furthermore, due to the complex internal environment of ditches, including curves, slopes, and other structural variations, fixed-direction sprinkler heads struggle to flexibly adapt to varying ditch shapes. At bends, the mismatch between the water flow direction and the angle of the blockage can easily lead to dredging failure. Furthermore, the continuous injection of high-pressure water wastes significant amounts of water resources, while the high friction between the sprinkler head and the ditch bottom increases the equipment's energy consumption, failing to meet energy-saving and environmentally friendly operational requirements.

[0005] Existing dredging machines lack the ability to dynamically adjust the water pressure during the dredging process. When the sprinkler head encounters a stubborn blockage, it is unable to automatically increase the water pressure or change the impact mode according to the actual blockage strength, resulting in insufficient targeting of the dredging operation and difficulty in coping with various blockage scenarios, which in turn affects the maintenance efficiency and stability of the municipal drainage system. Summary of the Invention

[0006] The invention provides a municipal drainage ditch dredging machine, which is convenient for dredging the drainage ditch.

[0007] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0008] In a first aspect, a municipal drainage ditch dredging machine includes: a frame and a hydraulic pump disposed in the frame, a generator fixed in the frame, an oil tank fixed in the frame, and further includes:

[0009] The dredging head is located on the frame; the switching member is slidably set in the dredging head and is used to switch between two dredging modes; the locking member is rotatably set in the dredging head and is used to lock and extend the duration of the dredging mode switch; the impact member is fixed in the dredging head and pushes the dredging head away from the blockage and impacts to clear the blockage;

[0010] The base of the liquid hose reel is fixed on the frame; one end of the liquid supply pipe is wound on the liquid hose reel and the other end is fixed on the dredging head;

[0011] The dredging tube is fixed in the dredging head;

[0012] The impact rod is slidably inserted into the dredging pipe; the switching rod is located on the upper and lower sides of the impact rod, with one end fixed on the impact rod and the other end slidably inserted into the dredging head; the switching tooth plate is fixed to the end of the switching rod located in the dredging head; the first liquid nozzle is fixed in the dredging head; the second liquid nozzle is fixed in the dredging head;

[0013] A locking hole is provided on the dredging pipe; a locking head is slidably inserted into the locking hole; a limiting cover is fixed on the dredging pipe; a first locking spring has one end fixed on the locking head and the other end fixed in the limiting cover;

[0014] The first impact nozzle is fixed on both sides of the inside of the dredging head; the second impact nozzle is fixed on both sides of the inside of the dredging head;

[0015] A controller is fixed in the rack.

[0016] Furthermore, the switching element further includes:

[0017] The first rotatable plate is fixed in the dredging head; the first transmission rod is rotatably set on the first rotatable plate; the switching gear is fixed on the first transmission rod and meshes with the switching gear plate; the second transmission rod is rotatably set on the first rotatable plate and is perpendicular to the first transmission rod; the first bevel gear pair, the input end bevel gear is fixed on both ends of the first transmission rod, and the output end bevel gear is fixed on the second transmission rod.

[0018] Furthermore, the switching element further includes:

[0019] There are four switching valve housings, and the water inlet ends of the four switching valve housings are fixed on the dredging pipe, and the water outlet ends of the four switching valve housings are respectively fixed on the first liquid nozzle and the second liquid nozzle; the single-hole valve core is rotatably set in the switching valve housing; the valve stem, one end of which is fixed on the single-hole valve core, and the other end extends out of the switching valve housing; the second bevel gear pair, the input end bevel gear is fixed on the second transmission rod, and the output end bevel gear is fixed on one end of the valve stem extending out of the switching valve housing.

[0020] Furthermore, the switching element further includes:

[0021] The switching cylinder is fixed on both sides of the dredging pipe; the limiting ring is fixed in the switching cylinder; the switching piston is slidably arranged in the switching cylinder; the switching spring has one end fixed on the switching piston and the other end fixed on the inner wall of the switching cylinder; the first one-way liquid pipe has one end fixed on the switching cylinder and the other end extending out of the dredging head.

[0022] Furthermore, the locking member further comprises:

[0023] The driving disk is rotatably sleeved on the switching cylinder; the vortex gear ring is fixed on the driving disk; the movable hole is opened in the locking head; the unlocking plate is slidably inserted in the limit cover, and one end located in the limit cover slides and extends into the movable hole; the vortex groove is opened on the unlocking plate and is adapted to the vortex gear ring.

[0024] Furthermore, the locking member further comprises:

[0025] The second swivel plate is fixed in the dredging head; the locking liquid cylinder is fixed on the second swivel plate; the locking liquid tube has one end fixed on the switching cylinder and the other end fixed on the locking liquid cylinder; the locking piston rod has the piston end slidably inserted in the locking liquid cylinder; the second locking spring has one end fixed on the piston end of the locking piston rod and the other end fixed in the locking liquid cylinder; the locking tooth plate is fixed on the locking piston rod; the locking tooth group is fixed on the driving disk and meshes with the locking tooth plate.

[0026] Furthermore, the impact member further comprises:

[0027] The impact supply pipe is fixed on both sides of the dredging pipe; the closing cylinder is slidably arranged in the dredging pipe and is located at the impact supply pipe; the linkage rod is fixed on the impact rod at one end and on the closing cylinder at the other end; the three-way valve housing has the water inlet end fixed on the impact supply pipe and the water outlet end fixed on the first impact nozzle and the second impact nozzle; the reversing valve core is rotatably arranged in the three-way valve housing; the vertical hole is opened on the reversing valve core; the valve shaft is fixed on the reversing valve core and is rotatably connected to the three-way valve housing; the torsion cylinder is fixed on the three-way valve housing; the bidirectional torsion spring has one end fixed in the torsion cylinder and the other end fixed on the valve shaft.

[0028] Furthermore, the impact member further comprises:

[0029] The third rotatable seat plate is fixed in the dredging head; the impact liquid cylinder is fixed on the third rotatable seat plate; the impact piston rod, the piston end of which is slidably inserted in the impact liquid cylinder; the impact spring, one end of which is fixed on the piston end of the impact piston rod, and the other end is fixed in the impact liquid cylinder; the impact gear is fixed on the valve shaft; the impact tooth plate is fixed on the impact piston rod and meshes with the impact gear; the impact limit plate is fixed on the impact tooth plate; the impact liquid pipe, one end of which is fixed on the impact liquid cylinder, and the other end is fixed on the switching cylinder.

[0030] Furthermore, wheels are rotatably provided at the bottom of the frame, and a push handle is fixed to the frame; a power motor is fixed to the liquid pipe reel, and a third bevel gear pair is fixed to the rotating shaft of the liquid pipe reel, and the third bevel gear pair is fixed to the power motor.

[0031] Furthermore, it also includes:

[0032] One end of the second one-way liquid pipe is fixed on the dredging pipe, and the other end is fixed on the inner bottom of the dredging head; the flow limiter is fixed on the second one-way liquid pipe; the water outlet is opened on the dredging pipe and is connected to the second one-way liquid pipe; the battery pack is fixed on the frame.

[0033] The above solution of the present invention includes at least the following beneficial effects:

[0034] The present invention uses the impact rod as the detection core and relies on the water pressure of the dredging pipe to construct an adaptive blockage clearing cycle mechanism; when the dredging head encounters a blockage, the impact rod is impacted and retracted to directly trigger the mode switching, and the instant linkage of blockage detection and processing can be achieved without external control; using the water pressure change of the dredging pipe, the reaction force of the water spraying from the first impact nozzle is first used to push the dredging head to retreat and accumulate force, and then the water pressure is increased to drive the displacement of the switching piston in the switching cylinder, and the second impact nozzle is opened through the impact liquid pipe and the impact liquid cylinder, and the reaction force of the water flow is used to push the dredging head to complete the "retreat-impact" clearing action; the impact limit plate limits the impact gear to ensure the impact time, and the bidirectional torsion spring drives the valve shaft to reset and open the first impact nozzle again, allowing the dredging head to retreat twice to complete a cycle. After the dredging head retreats twice, the reset impact rod detects whether the blockage is cleared; if it is not cleared, the retraction of the impact rod will be triggered again.

[0035] The present invention uses a locking piece to limit and unlock the impact rod through the locking head, and cooperates with the switching spring to drive the switching piston to reset the negative pressure to realize automatic return of each component. If the blockage is not cleared, the impact rod will trigger the cycle again. After the blockage is cleared, the impact rod will reset and drive the switching valve housing and the single-hole valve core to return, so that the first liquid nozzle and the second liquid nozzle will spray water again, and the dredging head will resume moving forward; the water in the dredging pipe will flow into the second one-way liquid pipe, and the flow rate will be limited by the flow limiter. The water flowing out of the second one-way liquid pipe will be discharged to the bottom of the dredging head through the water outlet, thereby reducing the friction between the dredging head and the ditch ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a frame of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the overall structure of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0038] Figure 3 A schematic structural diagram of a dredging head of a municipal drainage ditch dredging machine provided in an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a water outlet of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of a dredging pipe of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0041] Figure 6 A schematic structural diagram of a second liquid spray pipe of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0042] Figure 7 A schematic structural diagram of a second impact nozzle of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0043] Figure 8 A municipal drainage ditch dredging machine provided by an embodiment of the present invention Figure 7 A magnified view of point A;

[0044] Figure 9 A schematic structural diagram of an impact liquid pipe of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0045] Figure 10 A municipal drainage ditch dredging machine provided by an embodiment of the present invention Figure 9 Enlarged view of point B;

[0046] Figure 11 A municipal drainage ditch dredging machine provided by an embodiment of the present invention Figure 9 Enlarged view of point C;

[0047] Figure 12 A schematic structural diagram of a drive disc of a municipal drainage ditch dredging machine provided by an embodiment of the present invention;

[0048] Figure 13 A municipal drainage ditch dredging machine provided by an embodiment of the present invention Figure 12 Enlarged view of point D;

[0049] Figure 14 A schematic structural diagram of a closed cylinder of a municipal drainage ditch dredging machine provided in an embodiment of the present invention.

[0050] Description of reference numerals:

[0051] In the figure: 1, frame; 101, wheel; 102, push handle; 2, hydraulic pump; 3, generator; 4, fuel tank; 5, dredging head; 501, dredging pipe; 6, switching member; 601, impact rod; 602, switching rod; 603, switching gear plate; 604, first liquid nozzle; 605, second liquid nozzle; 606, first rotating seat plate; 607, first transmission rod; 608, switching gear; 609, second transmission rod; 6010, first bevel gear pair; 6011, switching valve housing; 6012, single-hole valve core; 6013, valve stem; 6014, second bevel gear pair; 6015, switching cylinder; 6016, limiting ring; 6017, switching piston; 6018, switching spring; 6019, first one-way liquid pipe; 7, locking member; 701, locking hole; 702, locking head; 703, limiting cover; 704, first locking spring; 705, driving plate; 706, scroll gear ring; 707, movable hole; 708, unlocking plate; 709, scroll groove; 7010 , second swivel plate; 7011, locking liquid cylinder; 7012, locking liquid pipe; 7013, locking piston rod; 7014, second locking spring; 7015, locking tooth plate; 7016, locking tooth group; 8, impact piece; 801, first impact nozzle; 802, second impact nozzle; 803, impact supply pipe; 804, closing cylinder; 805, linkage rod; 806, three-way valve housing; 807, reversing valve core; 808, vertical hole; 809, valve shaft; 8010, torsion cylinder; 8 011. Bidirectional torsion spring; 8012. Third swivel plate; 8013. Impact liquid cylinder; 8014. Impact piston rod; 8015. Impact spring; 8016. Impact gear; 8017. Impact tooth plate; 8018. Impact limit plate; 8019. Impact liquid pipe; 9. Liquid pipe reel; 901. Power motor; 902. Third bevel gear pair; 10. Liquid supply pipe; 11. Controller; 12. Second one-way liquid pipe; 13. Flow limiter; 14. Water outlet; 15. Battery pack. DETAILED DESCRIPTION

[0052] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0053] like Figures 1 to 14As shown, an embodiment of the present invention provides a municipal drainage ditch ditch dredging machine, comprising: a frame 1 and a hydraulic pump 2 disposed in the frame 1, a generator 3 fixed in the frame 1, an oil tank 4 fixed in the frame 1, and further comprising:

[0054] The dredging head 5 is located on the frame 1; the switching member 6 is slidably arranged in the dredging head 5 for switching between two dredging modes; the locking member 7 is rotatably arranged in the dredging head 5 for locking and extending the duration of the dredging mode switching; the impact member 8 is fixed in the dredging head 5 to push the dredging head 5 away from the blockage and impact to clear the blockage;

[0055] The base of the liquid pipe reel 9 is fixed on the frame 1; one end of the liquid supply pipe 10 is wound around the liquid pipe reel 9 and the other end is fixed on the dredging head 5;

[0056] The dredging tube 501 is fixed in the dredging head 5; the impact rod 601 is slidably inserted in the dredging tube 501; the switching rod 602 is located on the upper and lower sides of the impact rod 601, with one end fixed to the impact rod 601 and the other end slidably inserted in the dredging head 5; the switching tooth plate 603 is fixed to the end of the switching rod 602 located in the dredging head 5; the first liquid nozzle 604 is fixed in the dredging head 5; the second liquid nozzle 605 is fixed in the dredging head 5;

[0057] A locking hole 701 is provided on the dredging tube 501; a locking head 702 is slidably inserted into the locking hole 701; a limiting cover 703 is fixed to the dredging tube 501; a first locking spring 704 has one end fixed to the locking head 702 and the other end fixed in the limiting cover 703;

[0058] The first impact nozzle 801 is fixed on both sides of the inside of the dredging head 5; the second impact nozzle 802 is fixed on both sides of the inside of the dredging head 5; and a controller 11 is fixed in the frame 1.

[0059] The bottom of the frame 1 is rotatably provided with a wheel 101, and the frame 1 is fixed with a push handle 102; the liquid pipe reel 9 is fixed with a power motor 901, and the rotating shaft of the liquid pipe reel 9 is fixed with a third bevel gear pair 902, and the third bevel gear pair 902 is fixed on the power motor 901; it also includes: a second one-way liquid pipe 12, one end of which is fixed on the dredging pipe 501, and the other end is fixed on the inner bottom of the dredging head 5; a flow limiter 13, which is fixed on the second one-way liquid pipe 12; a water outlet 14, which is opened on the dredging pipe 501 and is connected to the second one-way liquid pipe 12; a battery pack 15, which is fixed on the frame 1.

[0060] Specifically, the hydraulic pump 2 is an electric hydraulic pump. In order to maintain long-term operation, it is equipped with a generator 3. The generator 3 is a diesel generator. The fuel tank 4 is full of diesel. When the battery pack 15 is almost empty, the battery pack 15 is charged; the power motor 901 is started, and the liquid pipe reel 9 is driven by the third bevel gear pair 902 to complete the lengthening and recovery of the liquid supply pipe 10; the push handle 102 facilitates the movement of the frame 1.

[0061] In another preferred embodiment of the present invention, the switching member 6 also includes: a first rotating plate 606, fixed in the dredging head 5; a first transmission rod 607, rotatably set on the first rotating plate 606; a switching gear 608, fixed on the first transmission rod 607, and meshed with the switching gear plate 603; a second transmission rod 609, rotatably set on the first rotating plate 606, and perpendicular to the first transmission rod 607; a first bevel gear pair 6010, the input end bevel gear is fixed at both ends of the first transmission rod 607, and the output end bevel gear is fixed on the second transmission rod 609.

[0062] The switching member 6 also includes: a switching valve housing 6011, of which four are provided, and the water inlet ends of the four switching valve housings 6011 are all fixed on the dredging pipe 501, and the water outlet ends of the four switching valve housings 6011 are respectively fixed on the first liquid nozzle 604 and the second liquid nozzle 605; a single-hole valve core 6012, which is rotatably arranged in the switching valve housing 6011; a valve stem 6013, one end of which is fixed on the single-hole valve core 6012, and the other end extends out of the switching valve housing 6011; a second bevel gear pair 6014, the input end bevel gear is fixed on the second transmission rod 609, and the output end bevel gear is fixed on one end of the valve stem 6013 extending out of the switching valve housing 6011.

[0063] The switching member 6 also includes: a switching cylinder 6015, fixed on both sides of the dredging tube 501; a limiting ring 6016, fixed in the switching cylinder 6015; a switching piston 6017, slidably arranged in the switching cylinder 6015; a switching spring 6018, one end of which is fixed on the switching piston 6017, and the other end is fixed on the inner wall of the switching cylinder 6015; a first one-way liquid tube 6019, one end of which is fixed on the switching cylinder 6015, and the other end extends out of the dredging head 5.

[0064] Specifically, the switching spring 6018 is used to block the displacement of the switching piston 6017 and provides resistance, so that the displacement of the switching piston 6017 requires a certain amount of time.

[0065] In another preferred embodiment of the present invention, the locking member 7 also includes: a driving disk 705, which is rotatably sleeved on the switching cylinder 6015; a vortex gear ring 706, which is fixed on the driving disk 705; a movable hole 707, which is opened in the locking head 702; an unlocking plate 708, which is slidably inserted in the limiting cover 703, and one end located in the limiting cover 703 slides and extends into the movable hole 707; a vortex groove 709, which is opened on the unlocking plate 708 and is adapted to the vortex gear ring 706.

[0066] The locking member 7 also includes: a second rotatable plate 7010, which is fixed in the dredging head 5; a locking fluid cylinder 7011, which is fixed on the second rotatable plate 7010; a locking fluid tube 7012, one end of which is fixed on the switching cylinder 6015, and the other end is fixed on the locking fluid cylinder 7011; a locking piston rod 7013, the piston end of which is slidably inserted in the locking fluid cylinder 7011; a second locking spring 7014, one end of which is fixed on the piston end of the locking piston rod 7013, and the other end is fixed in the locking fluid cylinder 7011; a locking tooth plate 7015, which is fixed on the locking piston rod 7013; a locking tooth group 7016, which is fixed on the driving disk 705 and meshes with the locking tooth plate 7015.

[0067] In another preferred embodiment of the present invention, the impact member 8 also includes: an impact supply pipe 803, fixed on both sides of the dredging pipe 501; a closing cylinder 804, slidably arranged in the dredging pipe 501, and located at the impact supply pipe 803; a linkage rod 805, one end of which is fixed on the impact rod 601, and the other end is fixed on the closing cylinder 804; a three-way valve housing 806, the water inlet end of which is fixed on the impact supply pipe 803, and the water outlet end of which is fixed on the first impact nozzle 801 and the second impact nozzle 802; a reversing valve core 807, rotatably arranged in the three-way valve housing 806; a vertical hole 808, which is opened on the reversing valve core 807; a valve shaft 809, which is fixed on the reversing valve core 807 and is rotatably connected to the three-way valve housing 806; a torsion cylinder 8010, which is fixed on the three-way valve housing 806; a bidirectional torsion spring 8011, one end of which is fixed in the torsion cylinder 8010, and the other end of which is fixed on the valve shaft 809.

[0068] The impact member 8 also includes: a third rotatable plate 8012, fixed in the dredging head 5; an impact fluid cylinder 8013, fixed on the third rotatable plate 8012; an impact piston rod 8014, the piston end of which is slidably inserted in the impact fluid cylinder 8013; an impact spring 8015, one end of which is fixed on the piston end of the impact piston rod 8014, and the other end is fixed in the impact fluid cylinder 8013; an impact gear 8016, fixed on the valve shaft 809; an impact tooth plate 8017, fixed on the impact piston rod 8014, and meshed with the impact gear 8016; an impact limit plate 8018, fixed on the impact tooth plate 8017; an impact liquid pipe 8019, one end of which is fixed on the impact fluid cylinder 8013, and the other end is fixed on the switching cylinder 6015.

[0069] Specifically, during normal advancement, the first liquid nozzle 604 and the second liquid nozzle 605 are used to push the dredging head 5 forward; when impact is required, the first impact nozzle 801 pushes the dredging head 5 backward, and then the second impact nozzle 802 pushes the dredging head 5 to impact the blockage.

[0070] Working principle: put the dredging head 5 into the ditch, connect the water inlet pipe of the hydraulic pump 2 to the water supply pipe, and prepare to start the dredging operation; when cleaning the ditch normally, start the hydraulic pump 2, the hydraulic pump 2 draws water from the external source, and supplies water to the liquid supply pipe 10 on the liquid pipe reel 9. The water flows through the liquid supply pipe 10 to the dredging head 5 and enters the dredging pipe 501, and then flows into the first liquid nozzle 604 and the second liquid nozzle 605 respectively through the switching valve housing 6011, and finally is ejected from the first liquid nozzle 604 and the second liquid nozzle 605, and the reaction force of the ejected water flow is used to push the dredging head 5 to move forward smoothly along the ditch.

[0071] When the dredging head 5 encounters a blockage, the impact rod 601 will be impacted by the blockage and begin to retract. The retraction of the impact rod 601 drives the switching rods 602 on the upper and lower sides to move synchronously, and the switching rod 602 in turn drives the switching gear plate 603 to displace. The switching gear plate 603 engages with the switching gear 608. The displacement of the switching gear plate 603 drives the switching gear 608 to rotate. The switching gear 608 is fixed to the first transmission rod 607. The first transmission rod 607 rotates, and the input end bevel gears at both ends of the first transmission rod 607 drive the second transmission rod 609 to rotate through the first bevel gear pair 6010. The input end bevel gear on the second transmission rod 609 drives the valve stem 6013 to rotate through the second bevel gear pair 6014. The valve stem 6013 drives the single-hole valve core 6012 in the switching valve housing 6011 to rotate, so that the switching valve housing 6011 is in a closed state, and the first liquid nozzle 604 and the second liquid nozzle 605 stop spraying water.

[0072] When the impact rod 601 retracts to the locking head 702, the locking head 702 will be pushed into the locking hole 701, and the locking head 702 will compress the first locking spring 704. When the impact rod 601 passes over the locking head 702, the first locking spring 704 pushes the locking head 702 to reset, and the force of the blockage intercepting the collision disappears. When the water pressure in the dredging pipe 501 pushes the impact rod 601 to reset, the locking head 702 will limit the reset.

[0073] The displacement of the impact rod 601 drives the closing cylinder 804 to move in the dredging pipe 501 through the linkage rod 805, so that the closing cylinder 804 is away from the impact supply pipe 803, and the water in the dredging pipe 501 is able to enter the impact supply pipe 803 and is transported to the first impact nozzle 801 through the three-way valve housing 806. The water flow is ejected from the first impact nozzle 801, and the reaction force of the water pushes the dredging head 5 away from the blockage. At the same time, the ejected water will wet the blockage, preparing for subsequent cleaning.

[0074] The water flow in the dredge pipe 501 has been switched from the first liquid nozzle 604 and the second liquid nozzle 605 to the first impact nozzle 801. The water pressure in the dredge pipe 501 increases accordingly. The increased water pressure pushes the switching piston 6017 in the switching cylinder 6015 to move. The switching piston 6017 begins to compress the switching spring 6018 until it moves to the impact liquid pipe 8019. The water in the dredge pipe 501 enters the impact liquid pipe 8019 and flows into the impact liquid cylinder 8013. The water pressure in the impact liquid cylinder 8013 will impact the piston rod 801. 4 is ejected, the impact piston rod 8014 compresses the impact spring 8015, the impact piston rod 8014 moves, driving the impact gear plate 8017 to move, the impact gear plate 8017 drives the impact gear 8016 to rotate, and the impact gear 8016 drives the valve shaft 809 and the reversing valve core 807 to rotate, so that the channel connecting the first impact nozzle 801 and the three-way valve housing 806 is closed, and the second impact nozzle 802 is connected to the channel of the three-way valve housing 806. Water flows out from the second impact nozzle 802, and the reaction force of the water pushes the dredging head 5 to hit the blockage.

[0075] In order to ensure the length of time that the second impact nozzle 802 and the three-way valve housing 806 are open, after the impact gear 8016 passes over the impact gear plate 8017, the impact limit plate 8018 will limit the rotation of the impact gear 8016, so that the impact gear 8016 slides on the impact limit plate 8018 for a period of time, ensuring that the dredging head 5 can effectively impact the blockage.

[0076] When the impact gear 8016 slides out of the impact limit plate 8018, the bidirectional torsion spring 8011 restores the rotated valve shaft 809 to its original position, and the channel between the first impact nozzle 801 and the three-way valve housing 806 is reopened, and the channel between the second impact nozzle 802 and the three-way valve housing 806 is closed. Water flows out from the first impact nozzle 801 again, pushing the dredging head 5 back away from the blockage, and maintaining a distance for the first liquid nozzle 604 and the second liquid nozzle 605 to push the dredging head 5 to hit the blockage again; after the blockage is dredged, the dredging head 5 continues to move forward; if the blockage is not dredged, it is convenient to trigger the retraction of the impact rod 601.

[0077] The water pressure in the dredge pipe 501 continuously pushes against the switching piston 6017 in the switching cylinder 6015, causing the switching piston 6017 to continuously compress the switching spring 6018 until it moves to the locking liquid pipe 7012. The water in the switching cylinder 6015 enters the locking liquid pipe 7012 and flows into the locking liquid cylinder 7011. The water pressure in the locking liquid cylinder 7011 pushes the locking piston rod 7013 out, and the locking piston rod 7013 compresses the second locking spring 7014. The displacement of the locking piston rod 7013 drives When the locking tooth plate 7015 moves, the locking tooth plate 7015 drives the locking tooth group 7016 and the driving disk 705 to rotate. When the vortex gear ring 706 on the driving disk 705 rotates, it cooperates with the vortex groove 709 on the unlocking plate 708, driving the unlocking plate 708 to extend from the limit cover 703. The extended unlocking plate 708 drives the locking head 702 to retract into the locking hole 701, and no longer limits the impact rod 601. The water pressure in the dredging pipe 501 then pushes the impact rod 601 back to its original position and resets.

[0078] The reset impact rod 601 drives the closing cylinder 804 to reset through the linkage rod 805, and the closing cylinder 804 is blocked in the impact supply pipe 803 again, and at the same time drives the switching valve housing 6011 and the single-hole valve core 6012 to reset, and the water flows out from the first liquid nozzle 604 and the second liquid nozzle 605 again. The water pressure in the dredging pipe 501 returns to normal, pushing the dredging head 5 to continue moving forward along the ditch.

[0079] During this process, the switching spring 6018 drives the switching piston 6017 to reset, and the switching piston 6017 returns to the limit ring 6016. Since the first one-way liquid pipe 6019 of the switching cylinder 6015 only allows liquid to flow out in one direction, negative pressure will be generated in the switching cylinder 6015 when the switching piston 6017 is reset, and the water in the locking liquid pipe 7012, the locking liquid cylinder 7011, the impact liquid cylinder 8013 and the impact liquid pipe 8019 will be discharged into the switching cylinder 6015. The locking piston rod 7013 and the impact piston rod 8014 are reset under the combined action of the negative pressure and the second locking spring 7014 and the impact spring 8015, thereby driving the locking gear plate 7015, the driving disc 705, the unlocking plate 708, the impact gear plate 8017, the impact gear 8016 and the bidirectional torsion spring 8011 to all reset, waiting for the next impact working cycle. The construction personnel need to observe the whole process on site to prevent all kinds of accidents.

[0080] The water in the switching cylinder 6015 will be discharged through the first one-way liquid pipe 6019 when the switching piston 6017 compresses the switching spring 6018; the water in the dredging pipe 501 will flow into the second one-way liquid pipe 12, and the flow rate will be limited by the flow limiter 13. The water flowing out of the second one-way liquid pipe 12 will be discharged to the bottom of the dredging head 5 through the water outlet 14, reducing the friction between the dredging head 5 and the ditch ground.

[0081] A hydraulic sensor is provided at the liquid supply pipe 10, and the hydraulic pressure value is transmitted to the controller 11, which then analyzes and appropriately increases the power of the hydraulic pump 2 to appropriately increase the water pressure in the dredging pipe 501.

[0082] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A municipal drainage ditch dredging machine, comprising: A frame and a hydraulic pump arranged in the frame, a generator fixed in the frame, and an oil tank fixed in the frame, characterized in that it also includes: The dredging head is located on the frame; the switching member is slidably set in the dredging head and is used to switch between two dredging modes; the locking member is rotatably set in the dredging head and is used to lock and extend the duration of the dredging mode switch; the impact member is fixed in the dredging head and pushes the dredging head away from the blockage before impacting to clear the blockage; The base of the liquid hose reel is fixed on the frame; one end of the liquid supply pipe is wound on the liquid hose reel and the other end is fixed on the dredging head; The dredging tube is fixed in the dredging head; The impact rod is slidably inserted into the dredging pipe; the switching rod is located on the upper and lower sides of the impact rod, with one end fixed on the impact rod and the other end slidably inserted into the dredging head; the switching tooth plate is fixed to the end of the switching rod located in the dredging head; the first liquid nozzle is fixed in the dredging head; the second liquid nozzle is fixed in the dredging head; A locking hole is provided on the dredging pipe; a locking head is slidably inserted into the locking hole; a limiting cover is fixed on the dredging pipe; a first locking spring has one end fixed on the locking head and the other end fixed in the limiting cover; The first impact nozzle is fixed on both sides of the inside of the dredging head; the second impact nozzle is fixed on both sides of the inside of the dredging head; A controller is fixed in the rack.

2. A municipal drainage ditch dredging machine according to claim 1, characterized in that: The switching element further includes: The first rotatable plate is fixed in the dredging head; the first transmission rod is rotatably set on the first rotatable plate; the switching gear is fixed on the first transmission rod and meshes with the switching gear plate; the second transmission rod is rotatably set on the first rotatable plate and is perpendicular to the first transmission rod; the first bevel gear pair, the input end bevel gear is fixed on both ends of the first transmission rod, and the output end bevel gear is fixed on the second transmission rod.

3. A municipal drainage ditch dredging machine according to claim 2, characterized in that: The switching element further includes: There are four switching valve housings, and the water inlet ends of the four switching valve housings are fixed on the dredging pipe, and the water outlet ends of the four switching valve housings are respectively fixed on the first liquid nozzle and the second liquid nozzle; the single-hole valve core is rotatably set in the switching valve housing; the valve stem, one end of which is fixed on the single-hole valve core, and the other end extends out of the switching valve housing; the second bevel gear pair, the input end bevel gear is fixed on the second transmission rod, and the output end bevel gear is fixed on one end of the valve stem extending out of the switching valve housing.

4. A municipal drainage ditch dredging machine according to claim 3, characterized in that: The switching element further includes: The switching cylinder is fixed on both sides of the dredging pipe; the limiting ring is fixed in the switching cylinder; the switching piston is slidably arranged in the switching cylinder; the switching spring has one end fixed on the switching piston and the other end fixed on the inner wall of the switching cylinder; the first one-way liquid pipe has one end fixed on the switching cylinder and the other end extending out of the dredging head.

5. The municipal drainage ditch dredging machine according to claim 4, characterized in that: The locking member further comprises: The driving disk is rotatably sleeved on the switching cylinder; the vortex gear ring is fixed on the driving disk; the movable hole is opened in the locking head; the unlocking plate is slidably inserted in the limit cover, and one end located in the limit cover slides and extends into the movable hole; the vortex groove is opened on the unlocking plate and is adapted to the vortex gear ring.

6. A municipal drainage ditch dredging machine according to claim 5, characterized in that: The locking member further comprises: The second swivel plate is fixed in the dredging head; the locking liquid cylinder is fixed on the second swivel plate; the locking liquid tube has one end fixed on the switching cylinder and the other end fixed on the locking liquid cylinder; the locking piston rod has the piston end slidably inserted in the locking liquid cylinder; the second locking spring has one end fixed on the piston end of the locking piston rod and the other end fixed in the locking liquid cylinder; the locking tooth plate is fixed on the locking piston rod; the locking tooth group is fixed on the driving disk and meshes with the locking tooth plate.

7. The municipal drainage ditch dredging machine according to claim 1, characterized in that: The impact member further comprises: The impact supply pipe is fixed on both sides of the dredging pipe; the closing cylinder is slidably arranged in the dredging pipe and is located at the impact supply pipe; the linkage rod is fixed on the impact rod at one end and on the closing cylinder at the other end; the three-way valve housing has the water inlet end fixed on the impact supply pipe and the water outlet end fixed on the first impact nozzle and the second impact nozzle; the reversing valve core is rotatably arranged in the three-way valve housing; the vertical hole is opened on the reversing valve core; the valve shaft is fixed on the reversing valve core and is rotatably connected to the three-way valve housing; the torsion cylinder is fixed on the three-way valve housing; the bidirectional torsion spring has one end fixed in the torsion cylinder and the other end fixed on the valve shaft.

8. The municipal drainage ditch dredging machine according to claim 7, characterized in that: The impact member further comprises: The third rotatable seat plate is fixed in the dredging head; the impact liquid cylinder is fixed on the third rotatable seat plate; the impact piston rod, the piston end of which is slidably inserted in the impact liquid cylinder; the impact spring, one end of which is fixed on the piston end of the impact piston rod, and the other end is fixed in the impact liquid cylinder; the impact gear is fixed on the valve shaft; the impact tooth plate is fixed on the impact piston rod and meshes with the impact gear; the impact limit plate is fixed on the impact tooth plate; the impact liquid pipe, one end of which is fixed on the impact liquid cylinder, and the other end is fixed on the switching cylinder.

9. The municipal drainage ditch dredging machine according to claim 1, characterized in that: The bottom of the frame is rotatably provided with wheels, and the frame is fixed with a push handle; the liquid pipe reel is fixed with a power motor, and the rotating shaft of the liquid pipe reel is fixed with a third bevel gear pair, and the third bevel gear pair is fixed on the power motor.

10. The municipal drainage ditch dredging machine according to claim 1, characterized in that: Also includes: A second one-way liquid pipe, one end of which is fixed to the dredging pipe and the other end is fixed to the inner bottom of the dredging head; a flow limiter is fixed to the second one-way liquid pipe; a water outlet is provided on the dredging pipe and is connected to the second one-way liquid pipe; The battery pack is fixed on the frame.

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