CN211340928U - River channel dredging grab bucket device - Google Patents
River channel dredging grab bucket device Download PDFInfo
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- CN211340928U CN211340928U CN201921536900.2U CN201921536900U CN211340928U CN 211340928 U CN211340928 U CN 211340928U CN 201921536900 U CN201921536900 U CN 201921536900U CN 211340928 U CN211340928 U CN 211340928U
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Abstract
The utility model provides a river channel desilting grab bucket device, including adjustment mechanism, bracing piece, fill lamella mechanism and pressure disk mechanism. The adjusting mechanism is a plane six-rod mechanism consisting of a bucket rod, a grab bucket hydraulic cylinder, a rocker, a connecting rod and a connecting seat in a hinged mode, wherein the grab bucket hydraulic cylinder is a driving piece; the upper end of the supporting rod is fixed on a connecting seat of the adjusting mechanism, the side wall of the supporting rod is provided with a plurality of bucket petal mechanisms which are uniformly distributed along the circumferential direction of the supporting rod, and each bucket petal mechanism comprises a bucket petal hydraulic cylinder and a bucket petal; the lower end of the supporting rod is provided with a pressure plate mechanism, and the pressure plate mechanism comprises a pressure plate hydraulic cylinder fixedly connected with the lower end of the supporting rod and a pressure plate fixedly connected with a piston rod of the pressure plate hydraulic cylinder; the lateral wall of each bucket petal is provided with a drainage channel. The utility model provides a pair of river course desilting grab bucket device replaces hydraulic shovel scraper bowl mechanism, can realize the extrusion and the clearance of snatching to river course silt, has higher convenient flexibility and high efficiency, low-cost characteristics.
Description
Technical Field
The utility model belongs to the technical field of the grab bucket engineering, concretely relates to river course desilting grab bucket device.
Background
The common dredging method is that a backhoe hydraulic excavator is used for excavating, when the dredging operation of the river channel is carried out, generally a working device of the excavator is operated to realize transferring and discharging actions, and finally the sludge is poured into a nearby truck; or directly digging silt, wherein the directly dug silt contains a large amount of water, so that the subsequent processing procedure of the silt is more complicated and fussy, and the transportation cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that exists among the above-mentioned prior art, provide a can replace river course desilting grab bucket of hydraulic excavator scraper bowl mechanism, utilize powerful function and operation convenience and flexibility of hydraulic excavator, not only can realize snatching silt, can also extrude the discharge to the moisture content in the silt, have important meaning to improving desilting efficiency, reducing the desilting cost and protecting the urban environment.
The technical scheme of the utility model is that: a dredging grab bucket device for a river channel comprises an adjusting mechanism, a supporting rod, a bucket flap mechanism and a pressure plate mechanism; the adjusting mechanism comprises a grab bucket hydraulic cylinder, a rocker, a connecting rod, a connecting seat and a bucket rod of the hydraulic excavator serving as a frame, all components of the adjusting mechanism form a plane six-rod mechanism in a hinged mode, and the grab bucket hydraulic cylinder is a driving piece of the plane six-rod mechanism; the upper end of the supporting rod is fixed on a connecting seat of the adjusting mechanism, a plurality of bucket petal mechanisms are uniformly distributed along the circumferential direction of the supporting rod on the side wall of the supporting rod, each bucket petal mechanism comprises a bucket petal hydraulic cylinder and a bucket petal, the upper side of the supporting rod is hinged with cylinder barrels of the bucket petal hydraulic cylinders, the lower side of the supporting rod is hinged with the bucket petals, and a piston rod of each bucket petal hydraulic cylinder is hinged with one bucket petal; the lower end of the supporting rod is provided with a pressure plate mechanism for extruding water in the sludge, and the pressure plate mechanism comprises a pressure plate hydraulic cylinder fixedly connected with the lower end of the supporting rod and a pressure plate fixedly connected with a piston rod of the pressure plate hydraulic cylinder; the lateral wall of each bucket petal is provided with a drainage channel.
The number of the rockers of the adjusting mechanism is two, the rockers are respectively positioned on the left side and the right side of the bucket rod, one ends of the two rockers are hinged with the rod body of the bucket rod through a pin shaft, the hinged position is away from the end part of the bucket rod by a certain distance, the other ends of the two rockers are hinged with one end of a connecting rod through a pin shaft, the other end of the connecting rod is hinged with one side of a connecting seat through a pin shaft, and the other side of; the cylinder barrel of the grab bucket hydraulic cylinder is fixedly connected with the bucket rod, the end part of a telescopic rod of the grab bucket hydraulic cylinder is fixedly provided with a sleeve, the sleeve is sleeved on a pin shaft for hinging two rocking rods with a connecting rod, and the connecting rod is provided with a groove matched with the sleeve; the grab bucket hydraulic cylinder, the rocker, the connecting rod, the connecting seat and the bucket rod of the hydraulic excavator serving as the frame are sequentially hinged to form a plane six-rod mechanism.
The pressure plate hydraulic cylinder is fixedly connected with the lower end of the support rod through a bolt flange plate, and the outer side of a piston rod of the pressure plate hydraulic cylinder is provided with an external thread; the inner side bottom of the pressure plate is provided with an internal thread, and the external thread arranged on the outer side of the piston rod is in threaded connection with the internal thread arranged at the inner side bottom of the pressure plate and is locked by an auxiliary nut.
The top of above-mentioned connecting seat is fixed with the otic placode, and otic placode one side is articulated through the tip of round pin axle with the dipper, and the otic placode opposite side is articulated through the tip of round pin axle with the connecting rod.
The outer surface of the bucket petal is welded with an arc reinforcing rib.
The plurality of hopper petals can form a closed space after being closed, and the inner walls of the hopper petals are attached to the inner wall of the conical pressure plate.
The center of the pressure plate is provided with a hole for meeting the telescopic stroke of the hydraulic cylinder of the pressure plate.
The utility model has the advantages that:
1. the utility model provides a pair of river course desilting grab bucket device, the device can directly be connected with the hydraulic shovel dipper, and its connected mode is the same with the connected mode of hydraulic shovel scraper bowl and dipper, has utilized powerful function and operation convenience and flexibility of hydraulic shovel, changes the original scraper bowl device of hydraulic shovel into the utility model provides a desilting grab bucket device can realize the operation of river course desilting, and the change mode is simple, compares special desilting equipment, low cost.
2. The utility model provides an adjustment mechanism is six rod mechanism in plane, and the concertina movement through the grab bucket pneumatic cylinder drives the connecting seat around its certain angle with the rotation of dipper pin joint, and then adjusts the position appearance of whole grab bucket device, makes the grab bucket be in the position appearance that is favorable to snatching silt all the time in the course of the work. The utility model discloses a relative four-bar linkage of six-bar linkage can increase the corner scope of connecting seat to the reinforcing is to the regulating power of grab bucket position appearance.
3. The plurality of bucket flaps provided by the utility model can form a closed space when in a closed state, thereby ensuring that the captured sludge has no leakage; after snatching silt, pressure disk pneumatic cylinder drive pressure disk downstream accomplishes the action of extrusion silt, through the moisture in the water drainage tank discharge silt that sets up on the fill lamella, greatly reduces the transportation and the post processing cost of silt, improves desilting efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention at I of FIG. 1;
FIG. 3 is a schematic structural view of the support rod of the present invention;
FIG. 4 is a schematic structural view of the middle petal of the present invention;
fig. 5 is a schematic cross-sectional view of a platen according to the present invention;
fig. 6 is a schematic structural diagram of the middle pressure plate hydraulic cylinder of the present invention.
Description of reference numerals:
1. a bucket rod; 2. a grab bucket hydraulic cylinder; 3. a sleeve; 4. a support bar; 5. a bucket hydraulic cylinder; 6. a bucket petal; 7. a platen; 8. a platen hydraulic cylinder; 9. a rocker; 10. a groove; 11. a connecting rod; 12. a connecting seat; 13. A water discharge tank; 14. a pin shaft; 15. an ear plate.
Detailed Description
In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
Example 1:
referring to fig. 1 to 6, a river dredging grab bucket device provided by the embodiment of the present invention includes an adjusting mechanism for adjusting the grabbing direction of the grab bucket, a support rod 4, a bucket flap mechanism and a pressure plate mechanism; the adjusting mechanism comprises a grab bucket hydraulic cylinder 2, a rocker 9, a connecting rod 11, a connecting seat 12 and a bucket rod 1 of the hydraulic excavator as a rack, all components of the adjusting mechanism form a plane six-rod mechanism in a hinged mode, a driving piece of the plane six-rod mechanism is the grab bucket hydraulic cylinder 2, the plane six-rod mechanism converts the telescopic motion of the grab bucket hydraulic cylinder 2 into the rotary motion of the connecting seat, and the rotary angle range of the connecting seat is increased to a large extent; the upper end of the support rod 4 is fixed on a connecting seat 12 of the adjusting mechanism, the support rod 4 moves along with the movement of the connecting seat 12, the support rod 4 serves as a rack, a plurality of bucket petal mechanisms are arranged on the side wall of the support rod, each bucket petal mechanism comprises a bucket petal hydraulic cylinder 5 and a bucket petal 6, the upper side of the support rod 4 is hinged with the cylinder barrels of the bucket petal hydraulic cylinders 5, the lower side of the support rod is hinged with the bucket petals 6, the bucket petal mechanisms are evenly distributed along the circumferential direction of the support rod, a piston rod of each bucket petal hydraulic cylinder 5 is hinged with one bucket petal 6, the opening and closing movement of the bucket petals is controlled through the telescopic movement of the bucket petal hydraulic cylinders 5, and when the bucket petal hydraulic cylinders 5 are in a limit; when the bucket petal hydraulic cylinder 5 is in an extreme extension state, the opening angle of the bucket petals is minimum, and at the moment, a plurality of bucket petals 6 form a closed space; the opening and closing movement of the bucket flap 6 is controlled through the telescopic movement of the bucket flap hydraulic cylinder 5, so that the grabbing and releasing actions of the sludge are realized;
the lower end of the support rod 4 is provided with a pressure plate mechanism for extruding water in the sludge, the pressure plate mechanism comprises a pressure plate hydraulic cylinder 8, a cylinder barrel of the pressure plate hydraulic cylinder 8 is fixedly connected with the lower end of the support rod 4 through a bolt, and a piston rod of the pressure plate hydraulic cylinder 8 is fixedly connected with a pressure plate 7 through a bolt; the pressure plate 7 moves linearly along with the expansion of the pressure plate hydraulic cylinder 8, and before the bucket flap 6 finishes the grabbing action on the sludge, the pressure plate 7 is positioned at the upper limit position and is not moved; after the bucket flap 6 finishes the grabbing action of the sludge to form a closed space, the pressure plate 7 moves downwards along with the extension of the pressure plate hydraulic cylinder 8 to extrude the sludge in the closed space and extrude the moisture in the sludge; the lateral wall of each bucket flap 6 is provided with a drainage channel 13, which is beneficial to discharging the water squeezed out by the pressure plate.
In the utility model, the bucket petal 6 is strictly calculated to ensure that a plurality of bucket petals 6 form a closed space after being closed, after the grab bucket device grabs sludge, the bottom of the bucket petal 6 needs to ensure a closed water leakage-free state after being closed, the strength and the rigidity of the bucket petal 6 are all in a safe range, the main extrusion area of the bucket petal of the grab bucket device is preferably cylindrical, the part below the cylindrical area is preferably spherical and is mainly used for accumulating sludge, the number of the bucket petals 6 is preferably four, the cooperation among the four bucket petals 6 can theoretically ensure the closed state, and when the gravity given to the bucket petals 6 by the sludge acts on the bottom of the spherical bucket petals 6, the direction of the force received by the spherical bucket petals 6 can be along the direction of spherical radius, the bucket petals are evenly distributed, the stress is even, the spherical bucket petals 6 can be safer under the same condition, the spherical bucket petals 6 are arranged in the groove 13, because the spherical area mainly accumulates the sludge, should not set up water drainage tank 13, firstly silt can block up water drainage tank 13, and moisture can't pass silt and discharge from fill flap 6 bottom, and secondly pressure disk hydraulic cylinder 8 may extrude silt, but the extrusion effect is not good, so sets up water drainage tank 13 in cylindrical fill shape region.
Furthermore, the number of the rocker arms 9 of the adjusting mechanism is two, the rocker arms 9 are respectively positioned on the left side and the right side of the bucket rod 1, one ends of the two rocker arms 9 are hinged with the rod body of the bucket rod 1 through a pin shaft 14, the hinged position is away from the end part of the bucket rod 1 by a certain distance, the other ends of the two rocker arms 9 are hinged with one end of a connecting rod 11 through the pin shaft 14, the other end of the connecting rod 11 is hinged with one side of a connecting seat 12 through the pin shaft 14, and the other side of the connecting seat 12; the cylinder barrel of the grab bucket hydraulic cylinder 2 is fixedly connected with the bucket rod 1, the end part of the telescopic rod of the grab bucket hydraulic cylinder 2 is fixedly provided with a sleeve 3, the sleeve 3 is sleeved on a pin shaft 14 for hinging two rocking bars 9 with a connecting rod 11, and the connecting rod 11 is provided with a groove 10 matched with the sleeve 3; the grab bucket hydraulic cylinder 2, the rocker 9, the connecting rod 11, the connecting seat 12 and the bucket rod 1 of the hydraulic excavator serving as the frame are sequentially hinged to form a plane six-rod mechanism.
Further, the pressure plate hydraulic cylinder 8 is fixedly connected with the lower end of the support rod 4 through a bolt flange plate, and an external thread is arranged on the outer side of a piston rod of the pressure plate hydraulic cylinder 8; the inboard bottom of pressure disk 7 is equipped with the internal thread, and the external screw thread that the outside of piston rod was equipped with and the internal thread threaded connection that the inboard bottom of pressure disk 7 was equipped with lock with supplementary nut.
Example 2:
the difference between the embodiment and the embodiment 1 is that an ear plate 15 is fixed at the top of the connecting seat 12, one side of the ear plate 15 is hinged with the end of the dipper stick 1 through a pin 14, and the other side of the ear plate 15 is hinged with the end of the connecting rod 11 through a pin 14; in this embodiment, an ear plate 15 is fixed on the top of the connecting seat 12 to increase the rotation angle range of the connecting rod 11 rotating around the connecting seat 12.
Example 3:
the difference between the embodiment and embodiment 1 is that the arc-shaped reinforcing ribs are welded on the outer surface of the bucket flap 6, when the pressure plate hydraulic cylinder 8 pushes the pressure plate 7 to extrude silt, the bucket flap 6 is subjected to an expansion force from inside to outside, and the bucket flap 6 is extremely easy to deform or even break, so that the strength and rigidity of the bucket flap 6 need to be enhanced.
Example 4:
the difference between this embodiment and embodiment 1 is only that pressure disk 7 adopts conical pressure disk 7, the sharp point department that adopts conical pressure disk 7 will insert silt more easily, along with pressure disk 7 downstream, silt will be by the in-process of extrudeing downwards, simultaneously by conical geometry gradually to both sides extrusion for silt extruded is more abundant, at conical pressure disk 7 downstream's in-process, the inner wall of fill lamella 6 and the laminating of conical pressure disk 7 inner wall, the stroke of guaranteeing pressure disk 7 downstream promptly, guarantee again with the closed space that forms after a plurality of fill lamellas 6 are closed not to interfere.
Example 5:
the difference between the embodiment and the embodiment 1 is that the center of the pressure plate 7 is provided with a hole for satisfying the expansion stroke of the pressure plate hydraulic cylinder 8; after the size of the pressure plate 7 is determined through calculation in practical application, after the size of the pressure plate 7 is determined, the distance between the upper surface of the pressure plate 7 and the lower surface of the bucket body is also determined, the stroke provided by the central pressure plate hydraulic cylinder 8 cannot exceed the range, and the expected effect cannot be achieved, in order to meet the expected effect, the length of the cylinder barrel of the pressure plate hydraulic cylinder 8 needs to be prolonged, and the expected target of the overall scheme is not interfered, so that the center of the upper surface of the conical pressure plate 7 needs to be perforated, the length of the cylinder barrel of the pressure plate hydraulic cylinder 8 is smoothly prolonged, meanwhile, the conical part of the upper surface is hollowed, a baffle is added at the edge, extruded sludge is prevented from flowing into the conical part, and in order to strengthen the center of the pressure plate 7, a piston rod of the pressure plate hydraulic cylinder 8 is in threaded connection with.
The utility model discloses a theory of operation: when the river channel dredging grab bucket device is used;
when the hydraulic excavator reaches a designated excavation site through walking and rotating actions, an operator controls the river channel dredging grab bucket device to work, the device can be directly connected with a bucket rod of the hydraulic excavator, the connecting mode of the hydraulic dredging machine is the same as the connecting mode of a bucket and a bucket rod of the hydraulic excavator, the powerful function, the operation convenience and the flexibility of the hydraulic excavator are utilized to realize the dredging operation of the river channel, the plane six-rod mechanism consisting of the grab bucket hydraulic cylinder 2, the rocker 9, the connecting rod 11, the connecting seat 12 and the bucket rod 1 of the hydraulic excavator used as a frame is driven to move by the telescopic motion of the grab bucket hydraulic cylinder 2, the connecting seat 12 is driven to rotate for a certain angle around the hinged point of the connecting seat and the bucket rod 1, further adjusting the pose of the whole grab bucket device to enable the grab bucket to be always in the pose beneficial to grabbing the sludge in the working process, and outputting certain force to enable the tip of the bucket flap 6 to be pricked into the sludge;
when the bucket petal hydraulic cylinder 5 is in the limit contraction state, the opening angle of the bucket petal 6 is the largest; when the plurality of bucket petal hydraulic cylinders 5 output thrust simultaneously and are in a limit extending state, the opening angle of the bucket petals 6 is minimum, the plurality of bucket petals 6 form a closed space to finish the action of grabbing sludge, and the grabbed sludge is in a closed space formed by closing the four bucket petals 6;
after the sludge is grabbed, the pressure plate hydraulic cylinder 8 is controlled to drive the pressure plate 7 to extrude the sludge in the closed space, and water in the sludge is discharged through the drainage groove 13 on the bucket flap 6 to finish the extrusion action of the sludge;
then an operator controls a hydraulic excavator connected with the river dredging grab bucket device to rotate and walk, the extruded sludge is moved to a designated place and the unloading action is completed, and then the grab bucket device is adjusted to carry out the next grabbing action.
To sum up, the utility model provides a pair of river course desilting grab bucket device replaces hydraulic excavator scraper bowl mechanism, can realize the desilting operation to the river course, has utilized powerful function and operation convenience and flexibility of hydraulic excavator, not only can realize snatching to silt, can also extrude the discharge to the moisture content in silt, has important meaning to improving desilting efficiency, reducing the desilting cost and protecting the urban environment.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.
Claims (7)
1. A river channel dredging grab bucket device is characterized by comprising an adjusting mechanism, a supporting rod (4), a bucket flap mechanism and a pressure plate mechanism; the adjusting mechanism comprises a grab bucket hydraulic cylinder (2), a rocker (9), a connecting rod (11), a connecting seat (12) and a bucket rod (1) of the hydraulic excavator serving as a rack, all components of the adjusting mechanism form a plane six-rod mechanism in a hinged mode, and the grab bucket hydraulic cylinder (2) is a driving piece of the plane six-rod mechanism; the upper end of the supporting rod (4) is fixed on a connecting seat (12) of the adjusting mechanism, a plurality of bucket flap mechanisms which are uniformly distributed along the circumferential direction of the supporting rod are arranged on the side wall of the supporting rod (4), each bucket flap mechanism comprises a bucket flap hydraulic cylinder (5) and a bucket flap (6), the upper side of the supporting rod (4) is hinged with cylinder barrels of the bucket flap hydraulic cylinders (5), the lower side of the supporting rod is hinged with the bucket flaps (6), and a piston rod of each bucket flap hydraulic cylinder (5) is hinged with one bucket flap (6); the lower end of the supporting rod (4) is provided with a pressure plate mechanism for extruding water in the sludge, and the pressure plate mechanism comprises a pressure plate hydraulic cylinder (8) fixedly connected with the lower end of the supporting rod (4) and a pressure plate (7) fixedly connected with a piston rod of the pressure plate hydraulic cylinder (8); the side wall of each bucket flap (6) is provided with a drainage groove (13).
2. The river channel dredging grab bucket device according to claim 1, wherein the number of the rocker arms (9) of the adjusting mechanism is two, the rocker arms are respectively positioned at the left side and the right side of the bucket rod (1), one ends of the two rocker arms (9) are hinged with the rod body of the bucket rod (1) through a pin shaft (14), the hinged position is away from the end part of the bucket rod (1) by a certain distance, the other ends of the two rocker arms (9) are hinged with one end of a connecting rod (11) through the pin shaft (14), the other end of the connecting rod (11) is hinged with one side of a connecting seat (12) through the pin shaft (14), and the other side of the connecting seat (12) is hinged with the end part of the bucket rod (1); a cylinder barrel of the grab bucket hydraulic cylinder (2) is fixedly connected with the bucket rod (1), a sleeve (3) is fixed at the end part of a telescopic rod of the grab bucket hydraulic cylinder (2), the sleeve (3) is sleeved on a pin shaft (14) for hinging two rocking rods (9) with a connecting rod (11), and a groove (10) matched with the sleeve (3) is formed in the connecting rod (11); the grab bucket hydraulic cylinder (2), the rocker (9), the connecting rod (11), the connecting seat (12) and the bucket rod (1) of the hydraulic excavator serving as the frame are sequentially hinged to form a plane six-rod mechanism.
3. The river channel dredging grab bucket device of claim 1, wherein the pressure plate hydraulic cylinder (8) is fixedly connected with the lower end of the support rod (4) through a bolt flange plate, and the outer side of a piston rod of the pressure plate hydraulic cylinder (8) is provided with an external thread; the inner side bottom of the pressure plate (7) is provided with an internal thread, and the external thread arranged on the outer side of the piston rod is connected with the internal thread arranged at the inner side bottom of the pressure plate (7) in a threaded manner and is locked by an auxiliary nut.
4. The river channel dredging grab bucket device according to claim 1, wherein an ear plate (15) is fixed at the top of the connecting seat (12), one side of the ear plate (15) is hinged with the end part of the bucket rod (1) through a pin shaft (14), and the other side of the ear plate (15) is hinged with the end part of the connecting rod (11) through the pin shaft (14).
5. The river channel dredging grab bucket device of claim 1, wherein the outer surface of the bucket petal (6) is welded with arc-shaped reinforcing ribs.
6. The river channel dredging grab bucket device according to claim 1, wherein the plurality of bucket flaps (6) can form a closed space after being closed, and the inner walls of the bucket flaps (6) are attached to the inner wall of the conical pressure plate (7).
7. The river channel dredging grab bucket device of claim 1, wherein the center of the pressure plate (7) is provided with an opening for satisfying the telescopic stroke of the pressure plate hydraulic cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921536900.2U CN211340928U (en) | 2019-09-16 | 2019-09-16 | River channel dredging grab bucket device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921536900.2U CN211340928U (en) | 2019-09-16 | 2019-09-16 | River channel dredging grab bucket device |
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| CN211340928U true CN211340928U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921536900.2U Active CN211340928U (en) | 2019-09-16 | 2019-09-16 | River channel dredging grab bucket device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761349A (en) * | 2019-09-16 | 2020-02-07 | 陕西理工大学 | River channel dredging grab bucket device |
| CN116575533A (en) * | 2023-07-13 | 2023-08-11 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
-
2019
- 2019-09-16 CN CN201921536900.2U patent/CN211340928U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761349A (en) * | 2019-09-16 | 2020-02-07 | 陕西理工大学 | River channel dredging grab bucket device |
| CN110761349B (en) * | 2019-09-16 | 2024-06-04 | 陕西理工大学 | River dredging grab bucket device |
| CN116575533A (en) * | 2023-07-13 | 2023-08-11 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
| CN116575533B (en) * | 2023-07-13 | 2023-09-12 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
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