Sludge dredging reamer head assembly for excavator

Abstract

A silt dredging reamer head assembly used on an excavator is installed at the front end of an excavating arm bucket rod of the excavator and connected with a piston rod of a bucket oil cylinder of the excavator, the silt dredging reamer head assembly comprises a connecting base, the lower end of the connecting base is fixedly connected with a protective shell, and a driving motor is installed in the protective shell. A reamer shaft is mounted at the output end of the driving motor; the lower end of the protection shell is detachably connected with a jet flow protection cylinder. A reamer is installed on the reamer shaft, at least one jet flow nozzle is arranged on the outer wall of the jet flow protection cylinder in the circumferential direction, and the jet flow nozzle is connected with a high-pressure water inlet pipe through a jet flow pipe. And a slurry suction pipe extending out of the jet pile casing is arranged in the jet pile casing. The assembly can be installed on an excavating arm of the excavator, and meanwhile high-pressure jet flow scouring and negative-pressure sludge suction are arranged. By means of the design, the dredging efficiency is improved, and the excavator can work in various complex environments including narrow water areas and shallow water areas.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging tools in water conservancy construction, in particular to a sludge dredging cutter head assembly used for an excavator. Background Art

[0002] Dredging is essential in water conservancy construction such as rivers, ports, and water conservancy projects. Traditional dredging methods mainly rely on cutter heads for underwater dredging. The cutter head is generally tooth-shaped and driven by a hydraulic motor or an electric motor to cut the underwater silt and sand. However, the operating scenario of this method is limited because the cutter head is usually installed on a suction dredger, which needs to be constructed in a wider water area and is difficult to enter narrow waters. There are also requirements for water depth, which must meet the draft of the ship. In addition, the use of a bucket for dredging also has the problems of low production efficiency and high construction costs.

[0003] In order to solve the above problems, the utility model proposes a new type of reamer assembly. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an assembly which can be installed on the excavator arm and is equipped with high-pressure jet flushing and negative pressure sludge suction. This design not only improves the dredging efficiency, but also enables the excavator to operate in various complex environments, including narrow waters and shallow water areas.

[0005] The utility model is implemented as follows: a sludge dredging auger head assembly for an excavator, the auger head assembly is installed at the front end of the digging arm of the excavator, and is connected to the piston rod of the bucket cylinder of the excavator, and is characterized in that: it includes a connecting seat, the lower end of the connecting seat is fixedly connected to a protective shell, a suspension frame is installed in the protective shell, a driving motor is installed on the suspension frame, a auger shaft is installed at the output end of the driving motor, and the center of the auger shaft and the center of the protective shell are located on the same axis; the lower end of the protective shell is detachably connected to a jet casing; the auger shaft extends out of the jet casing A reamer is installed on the reamer shaft, at least one jet nozzle is provided on the outer wall of the jet casing along the circumferential direction, the jet nozzle is connected to the high-pressure water inlet pipe through a jet pipe, and the outer diameter of the jet pipe is smaller than the high-pressure water inlet pipe; a first flange is provided at the end of the high-pressure water inlet pipe; a mud suction pipe is provided in the jet casing, the lower end of the mud suction pipe extends to the lower end of the jet casing without exposing the lower end face of the jet casing, the upper end of the mud suction pipe extends out of the outer wall of the jet casing, and a second flange is installed at the end of the mud suction pipe.

[0006] Preferably, the protective shell includes an upper shell fixedly connected to the connecting seat, a lower shell located on the outside of the driving motor, and an intermediate shell connected between the upper shell and the lower shell, wherein the outer diameter of the intermediate shell is smaller than the upper shell and the lower shell, the intermediate shell is transitionally connected to the upper shell and the lower shell through a conical sleeve, and a rib plate is welded on the outer circumference of the intermediate shell along the circumferential direction, and the two ends of the rib plate are respectively welded to the corresponding conical sleeve as a whole.

[0007] Preferably, a lifting hole is provided on the rib plate.

[0008] Preferably, the intermediate shell and / or the lower shell is provided with a pressure relief hole.

[0009] Preferably, a filter screen is installed at the lower end of the jet casing.

[0010] Preferably, a flow hole is provided above the filter screen at the lower end of the jet casing.

[0011] The utility model has the following advantages and technical effects:

[0012] A dredging cutter head assembly for sludge on an excavator is innovative in that it combines a variety of advanced functions and designs to achieve efficient, stable dredging operations that are adaptable to various complex environments. Through the design of the connection seat, protective shell and suspension frame, the assembly has a compact and stable structure that can adapt to different working environments. Among them, the protective shell provides protection for the internal components, while the suspension frame can flexibly adjust the position of the cutter head to better meet the needs of excavation operations. In addition, the assembly also has a jet casing and a high-pressure jet flushing function. By flushing the underwater sludge with high-pressure water flow, the mud concentration is reduced and the mud extraction efficiency is improved. At the same time, the design of the mud suction pipe enables the sludge to be sucked in a negative pressure manner. This efficient cleaning method improves the working efficiency. In addition, the optimized design of the protective shell enhances the structural strength and stability of the assembly, enabling it to withstand the impact and vibration in harsh working environments. The design of the filter screen and the flow hole protects key components and improves the reliability and service life of the system.

[0013] Finally, the assembly also has a separate design, so that the mud pump and the clean water pump can be arranged far away from the dredging site, improving the scene adaptability and safety of the device. In short, this technical solution has shown significant advantages in improving dredging efficiency, reducing operation difficulty and protecting the environment, and has good practicality and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 3 It is a bottom view of the utility model;

[0017] Figure 4 Schematic diagram of the drive motor installation structure;

[0018] Figure 5 It is a schematic diagram of the installation structure of the utility model.

[0019] In the figure, 10, connecting seat; 20, protective shell; 21, upper shell; 22, lower shell; 23, intermediate shell; 24, conical sleeve; 25, rib plate; 251, lifting hole; 26, pressure relief hole; 30, suspension frame; 40, driving motor; 401, reamer shaft; 50, jet casing; 51, flow hole; 60, reamer; 61, reamer turntable; 62, reamer mounting plate; 63, reamer teeth; 64, reamer reinforcement plate; 70, jet nozzle; 71, jet pipe; 72, high-pressure water inlet pipe; 73, first flange; 80, mud suction pipe; 81, second flange; 90, filter screen; 100, mud pump; 110, clean water pump. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] See also Figures 1 to 5, a sludge dredging auger head assembly for an excavator, the auger head assembly is installed at the front end of the digging arm of the excavator, and is connected to the piston rod of the bucket cylinder of the excavator, and the angle of the auger assembly cutting into the sludge is adjusted under the drive of the bucket cylinder; it includes a connecting seat 10, the connecting seat is welded by two parallel metal plates and a bottom plate, and a fixing plate is also welded between the two metal plates by welding; the upper parts of the two metal plates are correspondingly provided with connecting holes for hinged connection with the digging arm and the piston rod of the bucket cylinder; the lower end of the connecting seat is fixedly connected to the protective shell 20, and its connection method can be a flange connection or a welding structure. The present embodiment adopts a welding structure; a suspension frame 30 is installed in the protective shell, and the upper end of the suspension frame is fixedly connected to the connecting seat, and a driving motor 40 is installed at the lower end of the suspension frame, and a auger shaft 401 is installed at the output end of the driving motor, and the center of the auger shaft and the center of the protective shell are located on the same axis; the protective shell The lower end is detachably connected with a jet casing 50, and the connection method is threaded connection or flange connection. The jet casing is detachable, which is convenient for maintenance and installation of the drive motor; the reamer shaft extends out of the lower end surface of the jet casing, and a reamer 60 is installed on the reamer shaft. At least one jet nozzle 70 is provided on the outer wall of the jet casing in the circumferential direction, and the jet nozzle is connected to the high-pressure water inlet pipe 72 through a jet pipe 71. The outer diameter of the jet pipe is smaller than that of the high-pressure water inlet pipe, so that a high-pressure jet can be formed; a first flange 73 is provided at the end of the high-pressure water inlet pipe, and the first flange is connected to the high-pressure water source delivery pipeline; a mud suction pipe 80 is provided in the jet casing, and the lower end of the mud suction pipe extends to the lower end of the jet casing without exposing the lower end surface of the jet casing, and the upper end of the mud suction pipe extends out of the outer wall of the jet casing 50, and a second flange 81 is installed at the end of the mud suction pipe, and the second flange is connected to the mud delivery pipe, and the mud delivery pipe is connected to the mud pump.

[0022] Preferably, the reamer 60 comprises a disc-shaped reamer turntable 61, the bottom of which is connected to five reamer mounting plates 62 by welding, each of which is arranged at a certain angle, and the reamer mounting plates are arranged symmetrically around the center, and six reamer teeth 63 are arranged on each reamer mounting plate, and the reamer teeth are connected to the reamer mounting plates by welding. The purpose of such arrangement is to facilitate timely replacement of the reamer teeth when they are worn.

[0023] The reamer reinforcement plates 64 arranged on adjacent reamer mounting plates form a pentagonal structure. The purpose of such arrangement is to fix the five reamer mounting plates equidistantly, so that their relative positions do not change during the rotary cutting process and the reamer mounting plates are not easily deformed.

[0024] Preferably, the protective shell 20 includes an upper shell 21 fixedly connected to the connecting seat, a lower shell 22 located on the outside of the driving motor, and an intermediate shell 23 connected between the upper shell and the lower shell, wherein the outer diameter of the intermediate shell is smaller than the upper shell and the lower shell, the intermediate shell is transitionally connected to the upper shell and the lower shell through a conical sleeve 24, and a rib plate 25 is welded on the outer circumference of the intermediate shell along the circumferential direction, and the two ends of the rib plate are respectively welded to the corresponding conical sleeve as a whole.

[0025] Preferably, a hoisting hole 251 is provided on the rib plate 25. The hoisting hole is a rectangular through hole, which is provided on each rib plate. The purpose of such provision is to facilitate the hoisting operation when the reamer head device is installed.

[0026] Preferably, a pressure relief hole 26 is provided on the intermediate shell and / or the lower shell.

[0027] Preferably, a filter screen 90 is installed at the lower end of the jet casing, and the filter screen is a metal mesh.

[0028] Preferably, a flow hole 51 is provided above the filter screen at the lower end of the jet casing (the flow hole is preferably an inverted U-shaped structure).

[0029] The advantages of the above technical solution are analyzed in detail as follows:

[0030] 1. Design of the connection seat, protective shell and suspension frame: This design makes the assembly structure compact and stable. The connection seat provides a reliable installation foundation, the protective shell provides protection for the internal components, and the suspension frame can flexibly adjust the position of the reamer head to adapt to different working environments. The stability and adaptability of the assembly are enhanced, enabling it to operate in various complex environments, including narrow waters and shallow water areas.

[0031] 2. Jet casing and high-pressure jet flushing function: By connecting the high-pressure water inlet pipe through the jet pipe, the bottom silt can be flushed with high-pressure jets. While the dredging is being done by suction, high-pressure clean water can be used to hydraulically flush the harder soil, while increasing the amount of water at the auger, reducing the mud concentration and making the mud easier to be pumped by the mud pump. This design uses high-pressure clean water to hydraulically flush the harder soil, reducing the mud concentration and improving the mud extraction efficiency. At the same time, high-pressure clean water can also clean the auger to prevent the auger from clogging. This not only improves the dredging efficiency, but also reduces the disturbance of the soil by the excavator and reduces the impact of the operation on the surrounding environment. It improves the dredging efficiency and reduces the impact of the operation on the surrounding environment, enabling the excavator to operate in various complex environments.

[0032] 3. Mud suction pipe and negative pressure sludge suction function: The design of the mud suction pipe allows the sludge to be sucked by negative pressure. Compared with the traditional excavator bucket, this method is more efficient and can quickly clean up a large amount of sludge. At the same time, due to the special design of the mud suction pipe, it can work without exposing the lower end face of the jet casing, which increases the safety and convenience of operation. It improves the dredging efficiency, increases the safety and convenience of operation, and enables the excavator to operate in various complex environments.

[0033] 4. Optimized design of protective shell: The protective shell includes upper shell, lower shell and middle shell. This design provides good structural strength and stability. The addition of conical sleeve and rib plate further enhances the overall rigidity of the protective shell, enabling it to withstand the impact and vibration in harsh working environment. In addition, the pressure relief hole on the middle shell can effectively release the internal pressure to prevent the shell from rupturing in extreme cases. This design enhances the structural strength and stability of the assembly, enabling it to withstand the impact and vibration in harsh working environment, and improves its reliability and service life.

[0034] 5. The filter screen and flow hole design at the lower end of the jet casing: The filter screen can prevent large objects from entering the jet tube and mud suction pipe, thereby protecting these components from damage. The design of the flow hole can ensure the smooth passage of water, while reducing the resistance of the water flow and improving the jet effect. This design protects key components such as the jet tube and mud suction pipe from damage, and improves the reliability and service life of the system. At the same time, the design of the flow hole also improves the jet effect and further improves the dredging efficiency.

[0035] 6. Expanded application scenarios of the sludge dredging cutter head device installed on the digging arm: This device can be installed on the digging arm of amphibious excavators and backhoes to perform dredging construction in areas that are difficult for dredging vessels to enter, expanding the application scenarios. It can also dredge narrow waters, trenches, caverns, and pipelines driven by the excavator boom. This design expands the application scenarios of the device, enabling it to perform dredging construction in areas that are difficult for dredging vessels to enter. At the same time, it can also dredge narrow waters, trenches, caverns, and pipelines, improving the practicality and flexibility of the device.

[0036] 7. Separate design of the sludge dredging cutter head device installed on the digging arm: The mud pump and the clean water pump are separated from the dredging main machine and can be arranged at a location far away from the dredging site. The location arrangement is flexible and the scene adaptability is strong. The mud discharge port can also be flexibly arranged, easy to move, and has the characteristics of safety and environmental protection. This design improves the scene adaptability and safety of the device. The mud pump and the clean water pump can be arranged at a location far away from the dredging site, reducing the impact of noise and pollution. At the same time, the mud discharge port can also be flexibly arranged and easy to move, which improves the efficiency and flexibility of the operation. It has a stable structure, simple operation, high efficiency, and good practicality and market prospects.

[0037] Application Example 1 of the Utility Model:

[0038] The driving motor rotates when powered on, driving the auger shaft to rotate at the same angular velocity, causing the auger to rotate. The auger cuts after contacting the soil. The rotation of the auger generates a cutting force to stir the sediment at the riverbed, causing the sediment to mix with water. The cut mud (mortar) passes through the filter screen and enters the jet casing, and is transported to the mud pump 100 through the mud suction pipe and the mud delivery pipeline, and then discharged from the mud nozzle to the mud storage field.

[0039] Embodiment 2 of the present invention: At least one jet nozzle is provided on the outer wall of the jet casing along the circumferential direction, and the jet nozzle is connected to the high-pressure water inlet pipe through a jet pipe, and the outer diameter of the jet pipe is smaller than the outer diameter of the high-pressure water inlet pipe.

[0040] During the dredging process, the clean water pump 110 is turned on to transport clean water to the clean water injection high-pressure water inlet pipe by pumping and pressurizing. The high-pressure water inlet pipe increases the injection pressure through the jet pipe, and the clean water is sprayed out through the jet nozzle. The high-pressure clean water jet cuts the dredged mud in contact with the auger to improve the crushing efficiency. While cutting, the mud concentration near the auger is reduced, making it easier for the mud to pass through the filter screen 95 into the jet casing and then into the mud suction pipe.

[0041] Working scenario:

[0042] A ditch in a certain agricultural water field needs to be dredged at the bottom. It is surrounded by paddy fields and difficult for a suction dredger to enter. The auger is installed on the boom of an amphibious excavator, the original bucket is replaced, and the auger head is used to dredge the ditch. A clean water pump, a mud pump and a mud nozzle are placed on the ridge of the field. Clean water is injected into the high-pressure water inlet pipe through the clean water pump, and the dredged bottom mud is discharged to the mud discharge field through the mud suction pipe.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sludge dredging cutter head assembly for an excavator, the cutter head assembly is mounted on the front end of the digging arm of the excavator and connected to the piston rod of the bucket cylinder of the excavator, characterized in that: The invention comprises a connecting seat, the lower end of which is fixedly connected to a protective shell, a suspension frame is installed in the protective shell, a driving motor is installed on the suspension frame, a reamer shaft is installed at the output end of the driving motor, and the center of the reamer shaft and the center of the protective shell are located on the same axis; a jet casing is detachably connected to the lower end of the protective shell; the reamer shaft extends out of the lower end surface of the jet casing, a reamer is installed on the reamer shaft, at least one jet nozzle is provided on the outer wall of the jet casing in a circumferential direction, the jet nozzle is connected to a high-pressure water inlet pipe through a jet pipe, and the outer diameter of the jet pipe is smaller than the high-pressure water inlet pipe; a first flange is provided at the end of the high-pressure water inlet pipe; a mud suction pipe is provided in the jet casing, the lower end of the mud suction pipe extends to the lower end of the jet casing and does not expose the lower end surface of the jet casing, the upper end of the mud suction pipe extends out of the outer wall of the jet casing, and a second flange is installed at the end of the mud suction pipe.

2. The sludge dredging cutter head assembly for an excavator according to claim 1, characterized in that: The protective shell includes an upper shell fixedly connected to the connecting seat, a lower shell located outside the driving motor, and an intermediate shell connected between the upper shell and the lower shell, wherein the outer diameter of the intermediate shell is smaller than the upper shell and the lower shell, the intermediate shell is transitionally connected to the upper shell and the lower shell through a conical sleeve, and a rib plate is welded on the outer circumference of the intermediate shell along the circumferential direction, and the two ends of the rib plate are respectively welded to the corresponding conical sleeve as a whole.

3. The sludge dredging cutter head assembly for an excavator according to claim 2, characterized in that: The rib plate is provided with a hoisting hole.

4. The sludge dredging cutter head assembly for an excavator according to claim 2, characterized in that: The intermediate shell and / or the lower shell is provided with a pressure relief hole.

5. The sludge dredging cutter head assembly for an excavator according to claim 1, characterized in that: A filter screen is installed at the lower end of the jet casing.

6. The sludge dredging cutter head assembly for an excavator according to claim 5, characterized in that: A flow hole is arranged above the filter screen at the lower end of the jet casing.

Images