Hook for grab dredger

Abstract

The hook for the grab dredger comprises a hook body, an adjusting through hole is formed in the outer surface of the hook body, a pressing rod is rotationally connected to the interior of the adjusting through hole, a hook ring is rotationally connected to one end of the pressing rod, a rotating seat is fixedly connected to one side of the hook body, and the rotating seat is fixedly connected to the other side of the hook body. An adjusting lead screw is rotationally connected into the rotating seat, a sliding block is meshed with the outer surface of the adjusting lead screw, a hook groove is formed in the top end of the sliding block, and the inner surface of the hook groove is connected with the outer surface of the hook ring in a clamped mode. The hook ring is hung on the hook groove in the sliding block, the lifting screw rod is rotated to drive the sliding block to move upwards so as to pull the pressing rod to rotate, a steel wire rope for hanging and taking the grab bucket is pressed and fixed, the grab bucket is not suitable for driving the steel wire rope to slide in the hook body in the working process, friction loss is reduced, and the grab bucket is prevented from being damaged. The service lives of the hook and the steel wire rope are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, in particular to a hook for a grab dredger. Background Art

[0002] A grab dredger is a common water engineering machinery, mainly used for dredging, desilting and dredging operations in rivers, ports and oceans. Its grab is usually directly connected to the crane through a wire rope and a hook.

[0003] In the prior art, Chinese patent CN216403569U discloses "a hook for a crane with an anti-stretching mechanism", which includes a connecting seat and a load-bearing hook installed at the bottom of the connecting seat. The top of the load-bearing hook is integrally formed with a fixing ring, and the two sides of the fixing ring are rotatably connected to fixing plates. The top ends of the two fixing plates pass through the interior of the connecting seat and are connected to a top plate.

[0004] When the current grab bucket falls into the water to grab the silt, the wire rope and the hook become loose, causing the wire rope to slide on the hook. After the grab bucket has grabbed the silt, the crane lifts the grab bucket through the hook. During the lifting process, the wire rope is reset and rubs against the hook. During long-term operation, this will cause wear between the two and reduce the service life. Utility Model Content

[0005] The purpose of the utility model is to provide a hook for a grab dredger to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hook for a grab dredger, comprising a hook body, an outer surface of the hook body being provided with an adjustment through hole, a clamping rod being rotatably connected inside the adjustment through hole, one end of the clamping rod being rotatably connected to a hook ring, one side of the hook body being fixedly connected to a rotating seat, an adjusting screw being rotatably connected inside the rotating seat, an outer surface of the adjusting screw being engaged with a slider, a top end of the slider being provided with a hook groove, and an inner surface of the hook groove being clamped with an outer surface of the hook ring.

[0007] As a further preferred embodiment of the present technical solution, the top end of the adjusting screw rod passes through one side of the rotating seat and is fixedly connected to a polygonal connecting column, the outer surface of the polygonal connecting column is slidably connected to a polygonal movable sleeve, one end of the polygonal movable sleeve is inserted into a limiting seat, and the bottom end of the limiting seat is fixedly connected to one side of the rotating seat.

[0008] As a further preferred embodiment of the present technical solution, a limiting plate is fixedly connected to the top end of the polygonal connecting column.

[0009] As a further preferred embodiment of the present technical solution, a drag plate is rotatably connected to the outer surface of the hook body at a position above the notch, a clamping block is fixedly connected to one side of the drag plate near the edge, and a clamping slot is provided on the outer surface of the hook body at a position below the notch, and the outer surface of the clamping block is plugged into the inside of the clamping slot.

[0010] As a further preferred embodiment of the present technical solution, friction lines are provided on the inner surface of the hook body at the bottom end and at the bottom end of the pressing rod, and the top end of the hook body is fixedly connected to a fixing seat.

[0011] As a further preferred embodiment of the present technical solution, a positioning groove is provided on the outer surface of the hook body at the position of the adjusting screw rod, a positioning rod is fixedly connected to one side of the slider, and the outer surface of the positioning rod is slidably connected to the inside of the positioning groove.

[0012] The utility model provides a hook for a grab dredger, which has the following beneficial effects:

[0013] The utility model hangs the hook ring on the hook groove of the slider, and then rotates the lifting screw rod to drive the slider to move upward to pull the pressing rod to rotate, thereby pressing and fixing the steel wire rope of the hanging grab bucket, so that the grab bucket is not likely to drive the steel wire rope to slide in the hook body during operation, thereby reducing friction loss and increasing the service life of the hook and the steel wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when the carriage is unfolded;

[0016] Figure 3 This is an exploded schematic diagram of the slider structure of the present invention.

[0017] In the figure: 1. Hook body; 2. Adjustment through hole; 3. Pressing rod; 4. Hook ring; 5. Rotating seat; 6. Adjustment screw; 7. Slider; 8. Hook groove; 9. Polygonal connecting column; 10. Limit seat; 11. Polygonal movable sleeve; 12. Limiting plate; 13. Drag plate; 14. Slot; 15. Block; 16. Friction pattern; 17. Fixed seat; 18. Positioning groove; 19. Positioning rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] The utility model provides a technical solution: Figure 1-3As shown, in this embodiment, a hook for a grab dredger includes a hook body 1, an adjusting through hole 2 is provided on the outer surface of the hook body 1, a clamping rod 3 is rotatably connected inside the adjusting through hole 2, and a hook ring 4 is rotatably connected to one end of the clamping rod 3, a rotating seat 5 is fixedly connected to one side of the hook body 1, an adjusting screw rod 6 is rotatably connected inside the rotating seat 5, a slider 7 is engaged with the outer surface of the adjusting screw rod 6, a hook groove 8 is provided on the top of the slider 7, and the inner surface of the hook groove 8 is clamped with the outer surface of the hook ring 4, wherein, by providing the clamping rod 3, the wire rope can be prevented from sliding after installation by cooperating with the hook body 1, thereby preventing the wire rope from sliding in the hook body 1 when the hook body 1 is lifting the grab bucket, thereby reducing friction loss, and by providing the hook ring 4, a continuous force can be provided to the clamping rod 3 by cooperating with the slider 7, thereby improving the clamping effect.

[0020] like Figure 1 and Figure 3 As shown, the top end of the adjusting screw rod 6 passes through one side of the rotating seat 5 and is fixedly connected to a polygonal connecting column 9. The outer surface of the polygonal connecting column 9 is slidably connected to a polygonal movable sleeve 11. One end of the polygonal movable sleeve 11 is inserted into the limiting seat 10, and the bottom end of the limiting seat 10 is fixedly connected to one side of the rotating seat 5.

[0021] like Figure 3 As shown, a limiting plate 12 is fixedly connected to the top of the polygonal connecting column 9. The polygonal movable sleeve 11 cooperates with the limiting seat 10 and the polygonal connecting column 9 to fix the adjusting screw rod 6 and improve the stability of the clamping rod 3.

[0022] like Figure 2 and Figure 3 As shown, a drag plate 13 is rotatably connected to the outer surface of the hook body 1 at a position above the notch, and a clamping block 15 is fixedly connected to one side of the drag plate 13 and near the edge. A clamping groove 14 is provided on the outer surface of the hook body 1 at a position below the notch. The outer surface of the clamping block 15 is plugged into the inside of the clamping groove 14. By setting the clamping block 15 and the clamping groove 14, the drag plate 13 can be fixed, and the drag plate 13 can be provided. When the hook body 1 is in use, a certain pulling force can be provided to prevent deformation.

[0023] like Figure 1 、 Figure 2 and Figure 3 As shown, friction lines 16 are provided on the inner surface of the hook body 1 at the bottom and at the bottom of the pressing rod 3. A fixing seat 17 is fixedly connected to the top of the hook body 1. The friction lines 16 can increase the friction force.

[0024] like Figure 3As shown, a positioning groove 18 is provided on the outer surface of the hook body 1 at the position of the adjusting screw rod 6, and a positioning rod 19 is fixedly connected to one side of the slider 7. The outer surface of the positioning rod 19 is slidably connected to the inside of the positioning groove 18, which can position the slider 7 and improve its stability during the movement process.

[0025] The utility model provides a hook for a grab dredger, and the specific working principle is as follows:

[0026] The staff puts the wire rope connecting the grab bucket into the hook body 1 through the notch, then hangs the hook ring 4 on the hook groove 8 on the slider 7, and then pulls the polygonal movable sleeve 11 out of the limit seat 10, and rotates it with a wrench, so that the adjusting screw rod 6 rotates accordingly, and the adjusting screw rod 6 drives the slider 7 to move upward to pull the clamping rod 3 to rotate, and the wire rope for hanging the grab bucket is tightened and fixed. After the fixation is completed, the polygonal movable sleeve 11 is inserted into the limit seat 10 along the polygonal connecting column 9 to fix the adjusting screw rod 6, and then the drag plate 13 is rotated to insert the card block 15 into the card slot 14 to complete the installation of the grab bucket.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hook for a grab dredger, comprising a hook body (1), characterized in that: An adjusting through hole (2) is provided on the outer surface of the hook body (1), a pressing rod (3) is rotatably connected inside the adjusting through hole (2), one end of the pressing rod (3) is rotatably connected to a hook ring (4), one side of the hook body (1) is fixedly connected to a rotating seat (5), an adjusting screw rod (6) is rotatably connected inside the rotating seat (5), an outer surface of the adjusting screw rod (6) is engaged with a slider (7), a top end of the slider (7) is provided with a hook groove (8), and the inner surface of the hook groove (8) is engaged with the outer surface of the hook ring (4).

2. The grab dredger hook according to claim 1, characterized in that: The top end of the adjusting screw rod (6) passes through one side of the rotating seat (5) and is fixedly connected to a polygonal connecting column (9); the outer surface of the polygonal connecting column (9) is slidably connected to a polygonal movable sleeve (11); one end of the polygonal movable sleeve (11) is plugged into a limiting seat (10); the bottom end of the limiting seat (10) is fixedly connected to one side of the rotating seat (5).

3. The grab dredger hook according to claim 2, characterized in that: A limiting plate (12) is fixedly connected to the top end of the polygonal connecting column (9).

4. The grab dredger hook according to claim 3, characterized in that: A drag plate (13) is rotatably connected to the outer surface of the hook body (1) at a position above the notch, a clamping block (15) is fixedly connected to one side of the drag plate (13) near an edge, and a clamping groove (14) is provided on the outer surface of the hook body (1) at a position below the notch, and the outer surface of the clamping block (15) is plugged into the interior of the clamping groove (14).

5. The hook for a grab dredger according to claim 4, characterized in that: The inner surface of the hook body (1) and the bottom end position and the bottom end position of the pressing rod (3) are both provided with friction lines (16), and the top end of the hook body (1) is fixedly connected to a fixing seat (17).

6. The hook for a grab dredger according to claim 1, characterized in that: A positioning groove (18) is provided on the outer surface of the hook body (1) at the position of the adjusting screw rod (6); a positioning rod (19) is fixedly connected to one side of the slider (7); and the outer surface of the positioning rod (19) is slidably connected to the inside of the positioning groove (18).

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