Grab bucket device for dredger

Abstract

The grab bucket device for the dredger comprises a mounting plate, a connecting column is fixedly connected to the bottom of the mounting plate, a connecting frame is fixedly connected to the bottom of the connecting column, two sets of rotating rods are fixedly connected to the interior of the connecting frame, and outer grab buckets are rotationally connected to the two sets of rotating rods. The grab bucket has the advantages that firstly, judgment is made according to objects needing to be grabbed, if the objects are slurry flowing objects such as sludge, the screw rod can be twisted to enable the baffle to move, so that the first filter holes are not communicated with the second filter holes, and then the objects can be grabbed through the oil cylinders; and then the oil cylinder is started to close the two sets of outer grab buckets, slurry flowing objects such as sludge are grabbed and prevented from flowing out of the first filter holes and the second filter holes, and the working efficiency cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of dredgers, in particular to a grab bucket device for dredgers. Background Art

[0002] For dredging projects in navigable waters of inland bridge areas, dredged soil must be dumped at sea. According to the requirements of the design manual, the abandoned soil must be transported and dumped by inland / coastal ship docking. Dredgers are responsible for clearing silt from waterways and rivers so that other ships can pass smoothly. Common ones include cutter suction dredgers, chain bucket dredgers, trailing suction dredgers, bucket dredgers, excavator dredgers and grab dredgers. Grab dredgers use the boom and steel cables of a rotary excavator to hang the grab, which is placed on the riverbed under the weight of the grab itself to grab soil, and then the bucket rope winch is started to close and raise the grab through the pulley at the top of the boom, and then the excavator is rotated to the predetermined point to unload the mud.

[0003] The grab bucket used in the existing dredger during work will scoop up river water together with the dredger during dredging, and put it into the dredger together with the river water, and the dredger needs to discharge the excess river water again. The prior art proposes, for example, Chinese patent [application number CN201820205720.5] discloses a silt grab bucket for an agricultural gantry crane, comprising an upper support beam, a hoisting member, a connecting frame and a grab bucket, wherein the upper end of the upper support beam is fixedly connected to the hoisting member, and the lower end of the upper support beam is provided with a connecting frame, and two connecting frames are provided, and the two connecting frames are symmetrically distributed about the center of the upper support beam, and the connecting frames are arranged on the upper end of the upper support beam. A grab bucket is provided at the lower end, and a partition is provided inside the grab bucket. Although the patent can set a leakage hole at the bottom of the grab bucket, when squeezing the object inside the grab bucket, excess water will flow out from the leakage hole, thereby reducing the weight of the object lifted by the grab bucket; however, the above patent has certain defects during use. For example, there is silt in the river channel. When grabbing slurry-like flowing objects such as silt, the establishment of the leakage hole will cause the slurry-like flowing objects such as silt to be left out of the leakage hole during the transportation process after the grab bucket completes the grabbing, thereby affecting the work efficiency to a certain extent. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a grab bucket device for a dredging ship.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A grab device for a dredger comprises a mounting plate, the bottom of the mounting plate is fixedly connected to a connecting column, the bottom of the connecting column is fixedly connected to a connecting frame, two groups of rotating rods are fixedly connected to the interior of the connecting frame, both groups of rotating rods are rotatably connected to external grabs, the tops of the two groups of external grabs are fixedly connected to hinge seats, both groups of hinge seats are hinged with oil cylinders, the other ends of the two groups of oil cylinders are respectively hinged to the two sides of the bottom of the mounting plate, a slide groove is provided inside the external grab, a baffle is slidably connected to the inside of the slide groove, a threaded hole is provided on the top of the external grab, a screw is threadedly connected to the inside of the threaded hole, one end of the screw extends into the slide groove and is rotatably connected to the baffle, a first filter hole is evenly provided on one side of the baffle, and a second filter hole is evenly provided on the side of the external grab.

[0007] Preferably, a limiting block is fixedly connected inside the slide groove.

[0008] Preferably, both inner sides of the outer grab bucket are fixedly connected with bearing seats, and the bearings in the bearing seats are rotatably connected to the rotating rod.

[0009] Preferably, a fixing plate is fixedly connected to the top of the mounting plate, and a lifting opening is provided on one side of the fixing plate.

[0010] The beneficial effects of the utility model are as follows: the grab bucket device for a dredger provided by the utility model, when in use, firstly installs a fixing plate on a steel wire rope, and the device can be lifted and moved under the cooperation of a driving device on a dredger machine and various pulley assemblies, firstly judges according to the objects to be grabbed, if it is an object in a slurry state such as silt, the screw rod can be turned to move the baffle plate, so that the first filter hole is not connected with the second filter hole, so that the baffle plate blocks the second filter hole, and then the oil cylinder is started to close the two groups of outer grab buckets, grab the objects in a slurry state such as silt, and prevent them from flowing out from the first filter hole and the second filter hole, which will not affect the work efficiency, if the objects to be grabbed are not slurry-flowing objects, the screw rod can be turned again to move the baffle plate until the first filter hole and the second filter hole are connected, after the grabbing of the objects is completed, it is convenient for river water to be discharged from the first filter hole and the second filter hole, reducing the transportation of river water and also reducing the weight of the objects lifted by the grab bucket, and the device can be adjusted according to the situation of the objects to be grabbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a basic structural schematic diagram of the utility model;

[0012] Figure 2 For the utility model Figure 1 The results at A in the middle are enlarged;

[0013] Figure 3 For the utility model Figure 1A magnified view of the structure at B in the middle;

[0014] Figure 4 It is a schematic diagram of the communication structure between the first filter hole and the second filter hole of the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] like Figure 1 - Figure 4As shown, the utility model provides a grab device for a dredger, including a mounting plate 1, a connecting column 2 is fixedly connected to the bottom of the mounting plate 1, a connecting frame 3 is fixedly connected to the bottom of the connecting column 2, two sets of rotating rods 4 are fixedly connected to the inside of the connecting frame 3, both sets of rotating rods 4 are rotatably connected to external grabs 5, both sets of external grabs 5 are fixedly connected to the tops of the two sets of articulated seats 6, both sets of articulated seats 6 are articulated with oil cylinders 7, the other ends of the two sets of oil cylinders 7 are respectively articulated to the two sides of the bottom of the mounting plate 1, a slide groove 8 is provided inside the external grab 5, a baffle 9 is slidably connected to the inside of the slide groove 8, a threaded hole 10 is provided on the top of the external grab 5, a screw 11 is threadedly connected to the inside of the threaded hole 10, one end of the screw 11 extends into the slide groove 8 and is rotatably connected to the baffle 9, a first filter hole 12 is evenly provided on one side of the baffle 9, and a second filter hole 12 is evenly provided on the side of the external grab 5 Filter hole 13; first, judge the items that need to be grabbed. If it is a slurry-flowing item such as silt, the screw 11 can be turned to move the baffle 9, so that the first filter hole 12 is not connected to the second filter hole 13, so that the baffle 9 blocks the second filter hole 13, and then start the cylinder 7 to close the two sets of outer grab buckets 5, and grab the slurry-flowing items such as silt to prevent them from flowing out of the first filter hole 12 and the second filter hole 13, which will not affect the work efficiency. If the items that need to be grabbed are not slurry-flowing items, the screw 11 can be turned again to move the baffle 9 until the first filter hole 12 and the second filter hole 13 are connected. After the items are grabbed, it is convenient for river water to be discharged from the first filter hole 12 and the second filter hole 13, reducing the transportation of river water and reducing the weight of the objects lifted by the grab bucket. The device can be adjusted according to the situation of the items that need to be grabbed.

[0018] The interior of the slide groove 8 is fixedly connected to a limit block 14; when the baffle plate 9 is pushed to contact the limit block 14, the first filter hole 12 and the second filter hole 13 are connected, which is convenient for the staff to know.

[0019] The inner sides of the outer grab 5 are fixedly connected with bearing seats 15, and the bearings in the bearing seats 15 are rotatably connected to the rotating rod 4; the establishment of the bearing seats 15 allows the bearings and the rotating rod 4 to rotate when the outer grab 5 moves, which is beneficial to reduce the friction loss during rotation, thereby increasing the service life of the rotating rod 4.

[0020] The top of the mounting plate 1 is fixedly connected with a fixing plate 16, and a lifting port is opened on one side of the fixing plate 16; the fixing plate 16 is installed on the wire rope, and the device can be lifted and moved with the cooperation of the driving device on the dredger and various pulley assemblies.

[0021] Working principle: When in use, first install the fixing plate 16 on the wire rope, and the driving device on the dredger and the cooperation of each pulley assembly make the device lift and move. First, judge according to the items to be grabbed. If it is a slurry-like flowing item such as silt, the screw 11 can be turned to move the baffle 9, so that the first filter hole 12 is not connected with the second filter hole 13, so that the baffle 9 blocks the second filter hole 13, and then start the oil cylinder 7 to close the two groups of outer grab buckets 5, grab the slurry-like flowing items such as silt, and prevent them from flowing out from the first filter hole 12 and the second filter hole 13, which will not affect the work efficiency. If the items to be grabbed are not slurry-like flowing items, the screw 11 can be turned again to move the baffle 9 until the first filter hole 12 and the second filter hole 13 are connected. After the items are grabbed, it is convenient for river water to be discharged from the first filter hole 12 and the second filter hole 13, reducing the transportation of river water and reducing the weight of the objects lifted by the grab bucket. The device can be adjusted according to the situation of the items to be grabbed.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A grab device for a dredger, comprising a mounting plate (1), characterized in that: The bottom of the mounting plate (1) is fixedly connected to a connecting column (2), the bottom of the connecting column (2) is fixedly connected to a connecting frame (3), the interior of the connecting frame (3) is fixedly connected to two groups of rotating rods (4), the two groups of rotating rods (4) are rotatably connected to external grab buckets (5), the tops of the two groups of external grab buckets (5) are fixedly connected to hinged seats (6), the two groups of hinged seats (6) are hinged to oil cylinders (7), the other ends of the two groups of oil cylinders (7) are respectively connected to the two sides of the bottom of the mounting plate (1). The outer grab (5) is hinged, a slide groove (8) is provided inside the outer grab (5), a baffle (9) is slidably connected inside the slide groove (8), a threaded hole (10) is provided on the top of the outer grab (5), a screw rod (11) is threadedly connected inside the threaded hole (10), one end of the screw rod (11) extends into the slide groove (8) and is rotatably connected to the baffle (9), a first filter hole (12) is evenly provided on one side of the baffle (9), and a second filter hole (13) is evenly provided on the side of the outer grab (5).

2. A grab bucket device for a dredger according to claim 1, characterized in that: The interior of the slide groove (8) is fixedly connected to a limiting block (14).

3. A grab bucket device for a dredger according to claim 1, characterized in that: Both inner sides of the outer grab bucket (5) are fixedly connected to bearing seats (15), and the bearings in the bearing seats (15) are rotatably connected to the rotating rod (4).

4. A grab bucket device for a dredger according to claim 1, characterized in that: A fixing plate (16) is fixedly connected to the top of the mounting plate (1), and a lifting opening is provided on one side of the fixing plate (16).

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