Sand throwing device

Abstract

The utility model relates to a sand throwing device, and relates to the technical field of offshore construction. The sand throwing device comprises a support, a hopper and a discharging door assembly, a lifting lug is arranged at the top of the support, the hopper is arranged in the support, the discharging door assembly is arranged at the bottom of the hopper, the discharging door assembly comprises an upper door body, a lower door body, a clamping plate and a pull rope, and one side of the upper door body is hinged to one side of the lower door body through a first hinge. The clamping plate is hinged to the other side of the upper door body through a second hinge and comprises a clamping hook detachably connected with the bottom face of the lower door body, and the pull rope is arranged at the end, away from the upper door body, of the clamping plate. After the sand throwing device is suspended to the sand throwing position through the lifting lugs on the support, the auxiliary hook of the crane can enable the clamping plate to rotate around the second hinge by pulling the pull rope, so that the lower door body is opened, sand in the hopper directly falls into an operation site under the action of gravity, accurate sand throwing is achieved, and the seabed leveling requirement after pile washing operation is met; the device has the advantages of simple structure and convenience in use.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore construction, and particularly to a sand throwing device. Background Art

[0002] After the in-sea pile driving operation is carried out by using a jetting device in shallow waters, irregularly deep pits will be formed on the seabed at the bottom of the pile pipe. To reduce the influence of the pile pipe burial depth on its own stability, it is necessary to carry out sand throwing treatment on the bottom of the pile pipe to level the seabed.

[0003] Chinese Patent with the publication number CN209444888U discloses an automatic sand throwing system for submarine pipeline suspension protection, which completes the sand throwing operation by using mechanisms such as a belt conveyor and a directional throwing device. However, the above system has the deficiencies of relatively complex structure and cumbersome operation method. Content of the Utility Model

[0004] The utility model provides a sand throwing device, which has a simple structure and is convenient to use, and can conveniently level the seabed after the pile driving operation.

[0005] The utility model provides a sand throwing device, which includes a bracket, a hopper and a discharge door assembly. A lifting lug is arranged at the top of the bracket. The hopper is arranged inside the bracket. The discharge door assembly is arranged at the bottom of the hopper. The discharge door assembly includes an upper door body, a lower door body, a clamping plate and a pulling rope. One side of the upper door body and the lower door body is hinged through a first hinge. The clamping plate is hinged to the other side of the upper door body through a second hinge. The clamping plate includes a hook detachably connected to the bottom surface of the lower door body. The pulling rope is arranged at one end of the clamping plate far away from the upper door body.

[0006] In one embodiment, a support is further arranged at the bottom of the lower door body, and the support is arranged on the side of the lower door body far away from the first hinge.

[0007] In one embodiment, the second hinge is a torsion spring hinge.

[0008] In one embodiment, when the hook is connected to the lower door body, the hook is located directly below the second hinge.

[0009] In one embodiment, a tension spring is further arranged on one side of the lower door body, and the two ends of the tension spring are respectively connected to the lower door body and the hopper.

[0010] In one embodiment, the end of the tension spring connected to the lower door body is located on the side far away from the first hinge.

[0011] In one embodiment, the bracket includes legs, a first cross beam, a second cross beam, a first diagonal brace, and a second diagonal brace. The legs are vertically arranged and there are at least four of them. Both ends of the first cross beam and both ends of the second cross beam are connected to one of the legs. The first diagonal brace is disposed between the two first cross beams, and the second diagonal brace is disposed between the two second cross beams.

[0012] In one embodiment, the bottom of the first diagonal brace and the bottom of the second diagonal brace are both connected to the legs.

[0013] In one embodiment, the lifting lug is disposed at the top of the legs.

[0014] In one embodiment, the discharge opening of the hopper is rectangular.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: The inside of the hopper can be used to hold sand, and the bracket is used to maintain the structural strength of the sand throwing device to prevent the hopper from deforming. After the sand throwing device is suspended to the sand throwing position through the lifting lug on the bracket, the auxiliary hook of the crane can make the clamping plate rotate around the second hinge by pulling the pulling rope, so that the clamping hook on the clamping plate is disengaged from the lower door body, causing the lower door body to be opened, and the sand in the hopper directly falls into the working site under the action of gravity, thereby realizing precise sand throwing and meeting the requirement of seabed leveling after pile driving operation. There is no complex sand conveying mechanism such as a conveyor belt, and it has the advantages of simple structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, the present utility model will be described in more detail based on embodiments with reference to the drawings.

[0017] Figure 1 is the rear view of the sand throwing device in an embodiment of the present utility model;

[0018] Figure 2 is the top view of the sand throwing device in an embodiment of the present utility model;

[0019] Figure 3 is the side view of the sand throwing device in an embodiment of the present utility model when the lower door body is not opened;

[0020] Figure 4 is the side view of the sand throwing device in an embodiment of the present utility model when the lower door body is opened.

[0021] Reference Signs:

[0022] 1. Bracket; 11. Leg; 12. First cross beam; 13. Second cross beam; 14. First diagonal brace; 15. Second diagonal brace; 2. Hopper; 3. Discharge door assembly; 31. Upper door body; 32. Lower door body; 33. Clamping plate; 331. Hook; 34. Pulling rope; 35. First hinge; 36. Second hinge; 4. Lifting lug; 5. Support; 6. Tension spring. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings.

[0024] As Figure 1 and Figure 2 shown, a sand throwing device according to an embodiment of the present utility model includes a bracket 1, a hopper 2 and a discharge door assembly 3. A lifting lug 4 is provided at the top of the bracket 1. The hopper 2 is arranged inside the bracket 1, and the discharge door assembly 3 is arranged at the bottom of the hopper 2. As Figure 3 and Figure 4 shown, the discharge door assembly 3 includes an upper door body 31, a lower door body 32, a clamping plate 33 and a pulling rope 34. One side of the upper door body 31 and the lower door body 32 is hinged through a first hinge 35. The clamping plate 33 is hinged to the other side of the upper door body 31 through a second hinge 36. The clamping plate 33 includes a hook 331 detachably connected to the bottom surface of the lower door body 32. The pulling rope 34 is arranged at one end of the clamping plate 33 away from the upper door body 31.

[0025] The inside of the hopper 2 can be used to hold sand materials. The bracket 1 is used to maintain the structural strength of the sand throwing device and prevent the hopper 2 from deforming. After the sand throwing device is suspended to the sand throwing position through the lifting lug 4 on the bracket 1, the auxiliary hook of the crane can rotate the clamping plate 33 around the second hinge 36 by pulling the pulling rope 34, so that the hook 331 on the clamping plate 33 is disengaged from the lower door body 32, opening the lower door body 32. The sand materials in the hopper 2 directly fall into the operation site under the action of gravity, thus realizing precise sand throwing, meeting the requirement of seabed leveling after pile driving operation, without complex sand material conveying mechanisms such as conveyor belts, and having the advantages of simple structure and convenient use.

[0026] As Figure 1 shown, a support 5 is further provided at the bottom of the lower door body 32. The support 5 is arranged on the side of the lower door body 32 away from the first hinge 35. When filling the sand materials, the sand materials falling into the hopper 2 will generate a certain impact on the discharge door assembly 3. The support 5 can contact the placement surface of the sand throwing device, thereby supporting the discharge door assembly 3, reducing the impact on the lower door body 32 and the clamping plate 33, and improving the reliability of the device.

[0027] In this embodiment, the second hinge 36 is a torsion spring hinge. A torsion spring (not shown in the figure) is arranged inside the second hinge 36. The torsion spring has a certain elastic potential energy. When the pull rope 34 is not pulled, due to the action of the second hinge 36, the hook 331 always keeps in contact with the lower door body 32, and the hook 331 is not easy to be separated, so as to avoid the accidental opening of the lower door body 32 before the sand throwing device moves into place, thereby ensuring the smooth progress of the sand throwing operation.

[0028] Furthermore, when the hook 331 is connected to the lower door body 32, the hook 331 is located directly below the second hinge 36. When the hopper 2 is filled with sand material, the weight of the sand material will generate pressure on the lower door body 32, and the lower door body 32 will transfer the pressure to the hook 331, so that the hook 331 is subjected to vertical downward pressure and the second hinge 36 is subjected to force. Since the hook 331 is located directly below the second hinge 36, the pressure on the hook 331 will not cause the clamping plate 33 to generate a rotational torque, thereby ensuring the stability of the clamping plate 33 and preventing the lower door body 32 from opening accidentally.

[0029] like Figure 3 and Figure 4 As shown, a tension spring 6 is further provided on one side of the lower door body 32 in one embodiment, and the two ends of the tension spring 6 are respectively connected to the lower door body 32 and the hopper 2. When the hook 331 is disengaged from the lower door body 32, the sand in the hopper 2 opens the lower door body 32 under the action of gravity and is discharged. When the sand in the hopper 2 is discharged, the opened lower door body 32 will have a tendency to return under the action of the tension spring 6, thereby assisting the operator to close the lower door body 32, saving time and effort, and improving the working efficiency.

[0030] Furthermore, one end of the tension spring 6 connected to the lower door body 32 is located at a side away from the first hinge 35 , so that the torque generated by the tension spring 6 has a longer lever arm, which can better help close the lower door body 32 .

[0031] In this embodiment, the bracket 1 includes four legs 11, six first beams 12, six second beams 13, four first diagonal braces 14 and four second diagonal braces 15. The legs 11 are vertically arranged, both ends of the first beam 12 and both ends of the second beam 13 are connected to one leg 11, the first diagonal brace 14 is arranged between two first beams 12, and the second diagonal brace 15 is arranged between two second beams 13. The large number of first beams 12 and second beams 13 makes the bracket 1 have a higher structural strength and is not easy to deform. By arranging the first diagonal brace 14 and the second diagonal brace 15, a reinforcing effect can be achieved, and the structural strength of the bracket 1 can be further improved.

[0032] Furthermore, the bottoms of the first diagonal brace 14 and the second diagonal brace 15 are both connected to the support leg 11. The bottom of the first diagonal brace 14 is simultaneously connected to a first cross beam 12 and a support leg 11, and the bottom of the second diagonal brace 15 is simultaneously connected to a second cross beam 13 and a support leg 11, making the first diagonal brace 14 and the second diagonal brace 15 more stable and capable of providing a better support effect.

[0033] As Figure 1 and Figure 2 shown, the lifting lugs 4 are arranged at the tops of the support legs 11. A lifting lug 4 is provided at the top of each support leg 11, so that the sand throwing device can maintain high stability after being lifted. To further improve the stability of the sand throwing device during movement, a safety towing rope (not shown in the figure) can also be provided on the support leg 11, and the swaying amplitude of the sand throwing device can be reduced by pulling the safety towing rope, thereby improving the safety of the hoisting operation.

[0034] As Figure 2 shown, the discharge opening of the hopper 2 is rectangular, and each surface of the hopper 2 is made of flat plates and does not require curve processing, so the manufacturing difficulty and cost are relatively low.

[0035] Although the present utility model has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sand throwing device, characterized in that, It includes a bracket, a hopper and a discharge door assembly. A lifting lug is provided at the top of the bracket. The hopper is arranged inside the bracket. The discharge door assembly is arranged at the bottom of the hopper. The discharge door assembly includes an upper door body, a lower door body, a clamping plate and a pull rope. One side of the upper door body and the lower door body is hinged through a first hinge. The clamping plate is hinged to the other side of the upper door body through a second hinge. The clamping plate includes a hook detachably connected to the bottom surface of the lower door body. The pull rope is arranged at one end of the clamping plate away from the upper door body.

2. The sand throwing device according to claim 1, characterized in that, A support is further provided at the bottom of the lower door body. The support is arranged on the side of the lower door body away from the first hinge.

3. The sand throwing device according to claim 1, characterized in that, The second hinge is a torsion spring hinge.

4. The sand throwing device according to claim 3, characterized in that, When the hook is connected to the lower door body, the hook is located directly below the second hinge.

5. The sand throwing device according to claim 1, characterized in that, A tension spring is further provided on one side of the lower door body. Two ends of the tension spring are respectively connected to the lower door body and the hopper.

6. The sand throwing device according to claim 5, characterized in that, The end of the tension spring connected to the lower door body is located on the side away from the first hinge.

7. The sand throwing device according to claim 1, characterized in that, The bracket includes support legs, a first cross beam, a second cross beam, a first diagonal brace and a second diagonal brace. The support legs are vertically arranged and there are at least four of them. Both ends of the first cross beam and both ends of the second cross beam are connected to one of the support legs. The first diagonal brace is arranged between two first cross beams. The second diagonal brace is arranged between two second cross beams.

8. The sand throwing device according to claim 7, characterized in that, The bottom of the first diagonal brace and the bottom of the second diagonal brace are both connected to the support legs.

9. The sand throwing device according to claim 7, characterized in that, The lifting lug is arranged at the top of the support legs.

10. The sand throwing device according to claim 1, characterized in that, The discharge opening of the hopper is rectangular.

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