Detachable expansion device below fish maw of lead fish for hydrological test

Abstract

The utility model discloses a detachable device for expanding the lower part of the fish maw of a lead fish for hydrological survey, which is characterized in that two ends of each hoop extend outwards to form two extension parts; a threaded hole is longitudinally formed in each extension part; the plurality of bolt pairs are correspondingly mounted in the threaded holes of the two hoops, and the two hoops are detachably connected; wherein the outer wall of one hoop is further provided with the expansion nut, and the edge of the other hoop is provided with a groove. Through the application of the detachable expansion device for the lower part of the fish maw of the lead fish for hydrological survey, the detachable expansion device adopts the structural design of two hoops, is simple and flexible, can be flexibly detached at any time according to a specific scene of a hydrological implementation site, has the characteristics of convenience in installation, firmness and reliability, and particularly has the characteristics of offshore, offshore, offshore, offshore, offshore, offshore, offshore and offshore environments. The scene that sampling equipment is frequently replaced during hydrological survey shoal sampling improves the detachable flexibility of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater sampler and lead fish connection device, and in particular to a detachable extension device under the belly of a lead fish for hydrological testing. Background Technology

[0002] Currently, lead weights are generally cast directly from lead in a mold. Because lead itself is difficult to process and cannot be welded, once formed, it is difficult to change its shape. Early lead weights typically had a dorsal fin, which often made it impossible to extend sampling equipment in on-site hydrological surveys near the coast, rivers, lakes, and other bodies of water. The water depth in these areas is uncertain, with some places reaching depths of up to 10 meters and very fast currents. Using ropes or wires to bind hydrological survey equipment can easily cause the equipment to loosen or fall off under rapid currents. Utility Model Content

[0003] In view of this, and to solve the above problems, the purpose of this utility model is to provide a detachable extension device under the belly of a lead weight used for hydrological testing, characterized in that it includes:

[0004] Two clamps, several bolt pairs, and extension nuts;

[0005] Each of the clamps has two extension portions extending outwards at both ends;

[0006] Each of the aforementioned extensions is provided with a threaded hole in the longitudinal direction;

[0007] Several bolt pairs are correspondingly installed in the threaded holes of the two clamps, and the two clamps are detachably connected;

[0008] One of the clamps has an extension nut installed on its outer wall, and the other clamp has a groove on its edge.

[0009] The aforementioned detachable hydrological survey lead fish belly-expansion device is characterized in that each of the clamps is arranged in an arc shape, and the expansion nut is installed below the clamp.

[0010] The aforementioned detachable hydrological survey lead fish belly extension device is characterized in that the groove extends from the edge of the clamp inward.

[0011] The aforementioned detachable hydrological survey lead fish belly extension device is characterized in that the groove is arc-shaped.

[0012] The aforementioned detachable hydrological survey lead fish belly extension device is characterized in that the bolt pair includes a bolt and a nut, wherein the bolt passes through two corresponding threaded holes and is finally fixed by the nut.

[0013] The aforementioned detachable hydrological survey lead fish belly extension device is characterized in that the extension nut is fixed to the clamp by welding.

[0014] The positive effects of the above technical solution compared with the existing technology are:

[0015] By applying this utility model, a detachable extension device for the underside of a lead fish used in hydrological testing is provided. This device adopts a two-clamp structure design, which is simple and flexible. It can be flexibly disassembled at any time according to the specific scenario of the hydrological test site. It has the characteristics of convenient installation and solid reliability. It is especially suitable for scenarios near the coast and in shallow waters where sampling equipment needs to be changed frequently, thus improving the flexibility of the device to be disassembled. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a detachable hydrological survey lead fish belly extension device according to the present invention.

[0017] Figure 2 This is a perspective view of a detachable hydrological survey lead fish with an extension device located below its belly, according to this utility model.

[0018] 1. Clamp; 2. Extension nut; 3. Extension; 4. Threaded hole; 5. Groove; 6. Bolt; 7. Nut. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0020] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0021] like Figures 1 to 2 As shown, a preferred embodiment of a detachable extension device for the belly of a lead weight used in hydrological testing is presented, which includes: two clamps 1, several bolt pairs, and extension nuts 2.

[0022] Each clamp 1 has two extensions 3 extending outward from both ends; each extension 3 has a threaded hole 4 in the longitudinal direction; several bolt pairs are installed in the threaded holes 4 of the two clamps 1, and the two clamps 1 are detachably connected; one clamp 1 also has an expansion nut 2 installed on its outer wall, and the other clamp 1 has a groove 5 on its edge.

[0023] In actual use, this device is installed on-site, using a lead weight suspension system to ensure sufficient installation space for the extension device. The groove 5 is secured to the dorsal fin of the lead weight, and the two clamps 1 are tightly fitted against the middle of the lead weight's body. The two clamps 1 are then installed together using bolts, ensuring that the extension nut 2 is positioned below the lead weight.

[0024] Based on the above, this utility model also has the following embodiments:

[0025] Furthermore, a detachable extension device for the underside of a lead weight used in hydrological testing is provided, wherein each clamp 1 is arranged in an arc shape, and an extension nut 2 is installed below the clamp 1. Specifically, external sampling components are installed on the extension nut 2.

[0026] Furthermore, a detachable extension device for the underside of a lead weight used in hydrological surveys is provided, wherein a groove 5 extends inward from the edge of the clamp 1. Specifically, the dorsal fin of the lead weight is inserted into this groove 5, making it easy to position this device at the center of the lead weight's body.

[0027] Furthermore, a detachable extension device for the underside of a lead fish used for hydrological testing is provided, wherein the groove 5 is arranged in an arc shape.

[0028] Furthermore, a detachable extension device under the belly of a lead weight used for hydrological testing includes a bolt pair comprising a bolt 6 and a nut 7. The bolt 6 passes through two corresponding threaded holes 4 and is ultimately secured by the nut 7. Specifically, two clamps 1 are respectively secured to both sides of the lead weight, and then the bolt 6 passes through the extensions 3 of the two clamps 1 and is finally tightened by the nut 7.

[0029] Furthermore, a detachable extension device for the underside of a lead weight used in hydrological surveys is provided, wherein the extension nut 2 is fixed to the clamp 1 by welding. Specifically, welding ensures the installation stability of the extension nut 2 and the clamp 1.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A detachable extension device under the belly of a lead fish used for hydrological testing, characterized in that, include: Two clamps, several bolt pairs, and extension nuts; Each of the clamps has two extension portions extending outwards at both ends; Each of the aforementioned extensions is provided with a threaded hole in the longitudinal direction; Several bolt pairs are correspondingly installed in the threaded holes of the two clamps, and the two clamps are detachably connected; One of the clamps has an extension nut installed on its outer wall, and the other clamp has a groove on its edge.

2. The detachable hydrological survey lead fish belly extension device according to claim 1, characterized in that, Each of the clamps is arranged in an arc shape, and the expansion nut is installed below the clamp.

3. The detachable hydrological survey lead fish belly extension device according to claim 1, characterized in that, The groove extends inward from the edge of the clamp.

4. The detachable hydrological survey lead fish belly extension device according to claim 1, characterized in that, The groove is arc-shaped.

5. The detachable hydrological survey lead fish belly extension device according to claim 1, characterized in that, The bolt assembly includes a bolt and a nut, wherein the bolt passes through two corresponding threaded holes and is ultimately secured by the nut.

6. The detachable hydrological survey lead fish belly extension device according to claim 1, characterized in that, The expansion nut is fixed to the clamp by welding.

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