Grab bucket for river dredging

Abstract

The utility model provides a kind of grab bucket for river dredging, comprising: bucket body, the bucket body includes arc plate, the two sides of the inboard side of arc plate are fixed with triangular side plate, the upper end of side plate is hinged with bottom plate, the quantity of bucket body is two;Swing arm, the lower end of swing arm is hinged with the lower end of side plate, and the upper end of swing arm is hinged with top plate;Driving assembly, the driving assembly is used to adjust the distance between top plate and bottom plate;Mud scraping component, the mud scraping component includes two parallelly arranged inverted V-shaped mounting brackets, the end of inverted V-shaped mounting bracket is fixedly connected by arc scraper, and the inboard side of arc scraper is attached with the inboard side of arc plate.The utility model has beneficial effects: driving assembly action drives two bucket bodies to open, and bucket body rotates relative to second hinged shaft, at this time, arc scraper and inverted V-shaped mounting bracket are fixed relative to second hinged shaft, and arc plate and inverted V-shaped mounting bracket scrape wall-hanging sludge on the inboard side of bucket body, improve operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, and in particular relates to a grab bucket for river dredging. Background Technology

[0002] River management requires regular dredging. Dredging is typically carried out using dredging vessels, which use grab buckets to reach the riverbed, collect underwater silt, and transfer it to the dredging vessel.

[0003] In existing technologies, silt tends to accumulate on the inner wall of the grab bucket. First, this silt may fall into the already cleared and excavated section during rotation, causing some sections to fall below the design or specification requirements, affecting construction quality and acceptance rate. Second, if not cleaned, the effective grab volume will decrease, reducing work efficiency. However, regular cleaning will also reduce the grab bucket's grab frequency, further reducing work efficiency. Utility Model Content

[0004] In view of this, the present invention aims to provide a grab bucket for river dredging, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A grab bucket for river dredging includes: The bucket body includes an arc-shaped plate, and triangular side plates are fixed on both sides of the inner side of the arc-shaped plate. The upper end of the side plates is hinged to the bottom plate. The number of bucket bodies is two. The swing arm has its lower end hinged to the lower end of the side plate and its upper end hinged to the top plate. A drive assembly for adjusting the distance between the top plate and the bottom plate; The sludge scraping assembly includes two parallel inverted V-shaped mounting brackets, the ends of which are fixedly connected by an arc-shaped scraper, the outer side of which is in contact with the inner side of the arc-shaped scraper.

[0006] Furthermore, when the two buckets are closed, one end of the arc-shaped plate of one bucket is in contact with one end of the arc-shaped plate of the other bucket; One of the bucket bodies has a drainage hole at the end of its arc-shaped plate away from the other bucket body; A hinge plate is fixedly provided on the lower end of the side plate of one of the buckets, away from the other bucket, and a first hinge hole is provided on the hinge plate; The lower end of the swing arm is fixedly provided with a first hinge shaft, which passes through a first hinge hole, and the lower end of the swing arm is hinged to the side plate through the first hinge shaft.

[0007] Furthermore, one of the bucket bodies has a bucket tooth at one end of its arc-shaped plate away from the other bucket body. The bucket tooth has a first through hole, and the arc-shaped plate has a second through hole corresponding to the first through hole. The inner side of the arc-shaped plate has a hexagonal positioning groove corresponding to the second through hole. The connecting bolt passes through the second through hole and the first through hole and is threaded to the nut. The head of the connecting bolt is located inside the hexagonal positioning groove.

[0008] Furthermore, the number of bucket teeth is multiple, and the multiple bucket teeth are evenly arranged along the axial direction of the arc plate, with the interval between adjacent bucket teeth being greater than the width of the bucket teeth; The teeth of one of the buckets are located between adjacent teeth of the other bucket.

[0009] Furthermore, the depth of the hexagonal positioning groove is greater than the thickness of the connecting bolt head.

[0010] Furthermore, the upper end of the side plate is provided with a second hinge hole, and two first upright plates are fixedly provided on the bottom plate. Two second hinge shafts are fixedly provided on the first upright plates, and the two second hinge shafts are respectively installed inside the second hinge holes of the two buckets.

[0011] Furthermore, the arc-shaped plate and the second hinge axis are coaxially arranged, the outer diameter of the arc-shaped scraper matches the inner diameter of the arc-shaped plate, and the axis of the arc-shaped scraper and the second hinge axis are coaxially arranged. The upper edge of the end of the arc-shaped scraper adjacent to another arc-shaped scraper has a chamfered structure; The inverted V-shaped mounting bracket is located between two side plates and fits against the inner side of the side plates. The edge of the end face of one of the inverted V-shaped mounting brackets adjacent to the other inverted V-shaped mounting bracket has a chamfered structure. The inverted V-shaped mounting bracket has two mounting holes, and the two second hinge shafts are located inside the two mounting holes respectively.

[0012] Furthermore, a third hinge shaft is fixedly provided at the upper end of the swing arm, and a second vertical plate is fixedly provided on the top plate. The second vertical plate has a third hinge hole, and the third hinge shaft is installed inside the third hinge hole. Lifting rings are fixed to the top plate.

[0013] Furthermore, the drive assembly is a double-acting hydraulic cylinder, the housing of which is fixedly connected to the base plate, and the output shaft of which is fixedly connected to the top plate.

[0014] Furthermore, the drive component is a winch; The winch housing is fixedly connected to the top plate, and the winch wire rope is connected to the bottom plate.

[0015] Compared with the prior art, the grab bucket for river dredging described in this utility model has the following beneficial effects: (1) The grab bucket for river dredging described in this utility model drives the two buckets to open and rotate relative to the second hinge shaft. At this time, the arc-shaped scraper and the inverted V-shaped mounting bracket are fixed relative to the second hinge shaft. The arc-shaped scraper and the inverted V-shaped mounting bracket scrape off the silt hanging on the inner side of the bucket, thereby improving the work efficiency.

[0016] (2) The grab bucket for river dredging described in this utility model has teeth that facilitate the insertion of the bucket body into the silt, making it easier to grab the silt and improving work efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a three-dimensional structural diagram of the grab bucket in its closed state according to an embodiment of the present utility model; Figure 2 As described in the embodiments of this utility model Figure 1 Schematic diagram of the structure at point B; Figure 3 As described in the embodiments of this utility model Figure 1 Schematic diagram of the structure at point C; Figure 4 This is a three-dimensional structural diagram of the mud scraping component described in an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of a bucket body with bucket teeth as described in one embodiment of the present utility model; Figure 6 This is a three-dimensional structural diagram of another bucket body mounting bucket teeth according to an embodiment of this utility model; Figure 7 This is a schematic diagram of the three-dimensional structure of the bucket body according to an embodiment of the present utility model; Figure 8 As described in the embodiments of this utility model Figure 7 Schematic diagram of the structure at point A in the middle; Figure 9 This is a schematic diagram of the three-dimensional structure of the bucket teeth according to an embodiment of the present utility model; Figure 10 This is a schematic diagram of the three-dimensional structure of the swing arm according to an embodiment of the present utility model; Figure 11 This is a schematic cross-sectional view of the grab bucket in its closed state according to an embodiment of the present invention; Figure 12 This is a cross-sectional structural diagram of the grab bucket in the open state according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Bucket body; 2. Swing arm; 3. Base plate; 4. Top plate; 5. Double-acting hydraulic cylinder; 6. Sludge scraper assembly; 7. Bucket teeth; 8. Connecting bolts; 101. Arc-shaped plate; 102. Hinge plate; 103. First hinge hole; 104. Second hinge hole; 105. Drain hole; 106. Side plate; 107. Hexagonal positioning groove; 201. First hinge shaft; 202. Third hinge shaft; 301. First upright plate; 302. Second hinge shaft; 401. Lifting ring; 402. Second upright plate; 601. Inverted V-shaped mounting bracket; 602. Arc-shaped scraper. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 12As shown, a grab bucket for river dredging includes: a bucket body 1, which includes an arc-shaped plate 101, with triangular side plates 106 fixed on both sides of the inner side of the arc-shaped plate 101, the upper end of the side plates 106 being hinged to a bottom plate 3, and two bucket bodies 1; a swing arm 2, the lower end of the swing arm 2 being hinged to the lower end of the side plates 106, and the upper end of the swing arm 2 being hinged to a top plate 4; a drive assembly, which is used to adjust the distance between the top plate 4 and the bottom plate 3; and a sludge scraping assembly 6, which includes two parallel inverted V-shaped mounting brackets 601, the ends of which are fixedly connected by an arc-shaped scraper 602, the outer side of the arc-shaped scraper 602 being in contact with the inner side of the arc-shaped plate 101.

[0024] When the two buckets 1 are closed, one end of the arc-shaped plate 101 of one bucket 1 is in contact with one end of the arc-shaped plate 101 of the other bucket 1 (e.g., Figure 1 (as shown) One of the bucket bodies 1 has a drain hole 105 at the end of the arc plate 101 away from the other bucket body 1. The drain hole 105 can drain some of the water in the bucket body 1, preventing excessive water loading and reducing the workload. A hinge plate 102 is fixedly provided on the side plate 106 of one of the bucket bodies 1 away from the other bucket body 1. A first hinge hole 103 is opened on the hinge plate 102. A first hinge shaft 201 is fixedly provided on the lower end of the swing arm 2. The first hinge shaft 201 passes through the first hinge hole 103, and the lower end of the swing arm 2 is hinged to the side plate 106 through the first hinge shaft 201.

[0025] One of the bucket bodies 1 has a bucket tooth 7 at one end of its arc plate 101 away from the other bucket body 1. The bucket tooth 7 has a first through hole, and the arc plate 101 has a second through hole corresponding to the first through hole. The inner side of the arc plate 101 has a hexagonal positioning groove 107 corresponding to the second through hole. The connecting bolt 8 passes through the second through hole and the first through hole and is threaded to the nut. The head of the connecting bolt 8 is located inside the hexagonal positioning groove 107.

[0026] The number of bucket teeth 7 is multiple, and the multiple bucket teeth 7 are evenly arranged along the axial direction of the arc plate 101, with the interval between adjacent bucket teeth 7 being greater than the width of the bucket teeth 7; one of the bucket bodies 1 (e.g. Figure 5 As shown, the five teeth 7) are located in another bucket body 1 (as shown in the figure). Figure 6 As shown, there are 6 bucket teeth 7) between adjacent bucket teeth 7, which will not affect the closing of the bucket body 1. The arrangement of the bucket teeth 7 makes it easy for the bucket body 1 to be inserted into the silt and to grab the silt.

[0027] The depth of the hexagonal positioning groove 107 is greater than the thickness of the head of the connecting bolt 8 to prevent wear on the head of the connecting bolt 8.

[0028] The upper end of the side plate 106 has a second hinge hole 104. Two first upright plates 301 are fixed on the bottom plate 3, and two second hinge shafts 302 are fixed on the first upright plates 301. The two second hinge shafts 302 are respectively installed inside the second hinge holes 104 of the two bucket bodies 1. The first upright plates 301 improve the structural strength of the connection between the second hinge shafts 302 and the bottom plate 3.

[0029] The arc-shaped plate 101 and the second hinge shaft 302 are coaxially aligned. The outer diameter of the arc-shaped scraper 602 matches the inner diameter of the arc-shaped plate 101. The axis of the arc-shaped scraper 602 and the second hinge shaft 302 are coaxially aligned. The upper edge of one end of the arc-shaped scraper 602 adjacent to the other arc-shaped scraper 602 has a chamfered structure to reduce resistance during sludge scraping. The inverted V-shaped mounting bracket 601 is located between the two side plates 106. The inverted V-shaped mounting bracket 601 fits against the inner side of the side plate 106. One of the inverted V-shaped mounting brackets... The edge of the end face of the frame 601 adjacent to another inverted V-shaped mounting frame 601 is chamfered, meaning the inner side of the inverted V-shaped mounting frame 601 adjacent to the edge of another inverted V-shaped mounting frame 601 is chamfered, which reduces resistance during sludge scraping. The inverted V-shaped mounting frame 601 has two mounting holes, and two second hinge shafts 302 are located inside the two mounting holes respectively. The second hinge shafts 302 fix the inverted V-shaped mounting frame 601, and the relative position of the sludge scraping assembly 6 and the second hinge shafts 302 remains unchanged. The working principle of the sludge scraping assembly 6 is as follows: when the grab bucket reaches the designated position, the drive component moves to open the two buckets 1, and the buckets 1 rotate relative to the second hinge shafts 302. At this time, the arc-shaped scraper 602 and the inverted V-shaped mounting frame 601 are fixed relative to the second hinge shafts 302. The arc-shaped scraper 101 and the inverted V-shaped mounting frame 601 scrape away the sludge adhering to the inner side of the buckets 1, improving operating efficiency.

[0030] A third hinge shaft 202 is fixedly mounted on the upper end of the swing arm 2, and a second vertical plate 402 is fixedly mounted on the top plate 4. The second vertical plate 402 has a third hinge hole, and the third hinge shaft 202 is installed inside the third hinge hole. The installation of the second vertical plate 402 improves the structural strength of the top plate 4. A lifting ring 401 is fixedly mounted on the top plate 4, which facilitates connection with the tower crane ropes on the dredging vessel.

[0031] In some embodiments, the driving component is a double-acting hydraulic cylinder 5. The housing of the double-acting hydraulic cylinder 5 is fixedly connected to the base plate 3, and the output shaft of the double-acting hydraulic cylinder 5 is fixedly connected to the top plate 4. When the output shaft of the double-acting hydraulic cylinder 5 extends, it causes the base plate 3 to move upward, and the two buckets 1 close.

[0032] In other embodiments, the drive component is a winch; the winch housing is fixedly connected to the top plate 4, and the winch wire rope is connected to the bottom plate 3. The winch wire rope drives the bottom plate 3 to move upward, causing the two buckets 1 to close. The winch used in this case is a waterproof electric winch, and it can only be used in shallow tidal flats.

[0033] Work process: When this solution is implemented, the grab bucket is moved to the designated position above it. The drive assembly drives the bottom plate 3 and top plate 4 to move towards each other, and the lower ends of the two bucket bodies 1 move in opposite directions, so that the grab bucket is in the open state (e.g., Figure 12 As shown), the grab bucket position is lowered, and then the drive assembly drives the bottom plate 3 and top plate 4 to move in opposite directions, the lower ends of the two bucket bodies 1 move towards each other, and the grab bucket is in a closed state (as shown). Figure 11 As shown), during the closing process, the bucket teeth 7 at the lower end of the bucket body 1 are embedded in the silt, and the silt enters the inner side of the bucket body 1. Then, the grab bucket is moved to the unloading position, and the grab bucket is controlled to be open to unload the silt. The drive component moves to drive the two bucket bodies 1 to open. The bucket body 1 rotates relative to the second hinge shaft 302. At this time, the arc-shaped scraper 602 and the inverted V-shaped mounting bracket 601 are fixed relative to the second hinge shaft 302. The arc-shaped scraper 101 and the inverted V-shaped mounting bracket 601 scrape away the silt hanging on the inner side of the bucket body 1, improving the work efficiency, construction quality and project acceptance rate.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grab bucket for river dredging, characterized in that, include: The bucket body (1) includes an arc plate (101), and triangular side plates (106) are fixed on both sides of the inner side of the arc plate (101). The upper end of the side plate (106) is hinged to the bottom plate (3). The number of bucket bodies (1) is two. The lower end of the swing arm (2) is hinged to the lower end of the side plate (106), and the upper end of the swing arm (2) is hinged to the top plate (4). A drive assembly for adjusting the distance between the top plate (4) and the bottom plate (3); The mud scraping assembly (6) includes two parallel inverted V-shaped mounting brackets (601), the ends of which are fixedly connected by an arc-shaped scraper (602), the outer side of which is in contact with the inner side of the arc-shaped plate (101).

2. The grab bucket for river dredging according to claim 1, characterized in that: When the two buckets (1) are closed, one end of the arc plate (101) of one of the buckets (1) is attached to one end of the arc plate (101) of the other bucket (1); One of the bucket bodies (1) has a drainage hole (105) at the end of the arc plate (101) away from the other bucket body (1); A hinge plate (102) is fixedly provided on the side plate (106) of one of the bucket bodies (1) away from the other bucket body (1), and a first hinge hole (103) is opened on the hinge plate (102). The lower end of the swing arm (2) is fixed with a first hinge shaft (201), which passes through the first hinge hole (103). The lower end of the swing arm (2) is hinged to the side plate (106) through the first hinge shaft (201).

3. A grab bucket for river dredging according to claim 1, characterized in that: One of the bucket bodies (1) has a bucket tooth (7) at one end of its arc plate (101) away from the other bucket body (1). The bucket tooth (7) has a first through hole, and the arc plate (101) has a second through hole corresponding to the first through hole. The arc plate (101) has a hexagonal positioning groove (107) corresponding to the second through hole on its inner side. The connecting bolt (8) passes through the second through hole and the first through hole and is threaded to the nut. The head of the connecting bolt (8) is located inside the hexagonal positioning groove (107).

4. A grab bucket for river dredging according to claim 3, characterized in that: The number of bucket teeth (7) is multiple, and the multiple bucket teeth (7) are evenly arranged along the axial direction of the arc plate (101), and the interval between adjacent bucket teeth (7) is greater than the width of the bucket teeth (7); The teeth (7) of one of the bucket bodies (1) are located between adjacent teeth (7) of the other bucket body (1).

5. A grab bucket for river dredging according to claim 3, characterized in that: The depth of the hexagonal positioning groove (107) is greater than the thickness of the head of the connecting bolt (8).

6. A grab bucket for river dredging according to claim 1, characterized in that: The side plate (106) has a second hinge hole (104) at its upper end. The bottom plate (3) is fixed with two first upright plates (301). The first upright plates (301) are fixed with two second hinge shafts (302). The two second hinge shafts (302) are respectively installed inside the second hinge hole (104) of the two bucket bodies (1).

7. A grab bucket for river dredging according to claim 6, characterized in that: The arc-shaped plate (101) and the second hinge shaft (302) are arranged on the same axis. The outer diameter of the arc-shaped scraper (602) matches the inner diameter of the arc-shaped plate (101). The axis of the arc-shaped scraper (602) and the second hinge shaft (302) are arranged on the same axis. The upper edge of the end of the arc-shaped scraper (602) adjacent to another arc-shaped scraper (602) is chamfered; The inverted V-shaped mounting bracket (601) is located between two side plates (106). The inverted V-shaped mounting bracket (601) is attached to the inner side of the side plate (106). The edge of the end face of one of the inverted V-shaped mounting brackets adjacent to the other inverted V-shaped mounting bracket has a chamfered structure. The inverted V-shaped mounting bracket has two mounting holes, and the two second hinge shafts (302) are located inside the two mounting holes respectively.

8. A grab bucket for river dredging according to claim 1, characterized in that: The upper end of the swing arm (2) is fixedly provided with a third hinge shaft (202), and the top plate (4) is fixedly provided with a second vertical plate (402). The second vertical plate (402) has a third hinge hole, and the third hinge shaft (202) is installed on the inner side of the third hinge hole. A lifting ring (401) is fixed on the top plate (4).

9. A grab bucket for river dredging according to claim 1, characterized in that: The driving component is a double-acting hydraulic cylinder (5), the housing of the double-acting hydraulic cylinder (5) is fixedly connected to the base plate (3), and the output shaft of the double-acting hydraulic cylinder (5) is fixedly connected to the top plate (4).

10. A grab bucket for river dredging according to claim 1, characterized in that: The drive component is a winch; The housing of the winch is fixedly connected to the top plate (4), and the wire rope of the winch is connected to the bottom plate (3).

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