An angle-adjustable grab dredger

Abstract

The utility model relates to the technical field of mud sampler, concretely is a kind of grab mud sampler with adjustable opening angle, including left and right jaw petals by pin shaft hinged, and the hinge is equipped with thimble assembly;Thimble assembly contains the thimble of left jaw petal top and the top rod of right jaw petal top, and the outer wall of top rod is equipped with multiple pinholes for needle tip insertion. Left and right jaw petals and pin shaft are equipped with pull ring, and are connected by grab support rope, top rod pull rope and grab total rope. Thimble assembly also contains thimble support and top rod hinged seat, and left and right jaw petal top is equipped with pull rope buckle and load position. The utility model can adjust jaw petal opening angle by different pinholes on top rod, adapt to different sampling amount;Thimble support guarantees insertion stability, and load position can be increased by weight block to enhance sampling depth;It is easy to operate, reduces the experience dependence to personnel, solves the problem that existing mud sampler is difficult to operate and angle is fixed, improves collection efficiency and sample integrity.

Description

Technical Field

[0001] This utility model relates to the field of mud collector technology, and in particular to a grab bucket mud collector with an adjustable opening angle. Background Technology

[0002] In environmental and water conservancy research, grab sediment samples are core tools for obtaining sediment samples from the bottom of water bodies. By collecting bottom sediments from different water bodies such as rivers, lakes, and oceans, they provide fundamental sample support for studying the evolution of aquatic ecological environments, pollutant migration and transformation, hydrogeological characteristics, and the impact of water conservancy projects. Specifically, researchers can use the sediment samples collected to analyze the content and distribution of nutrients, heavy metals, and organic pollutants in the sediments, clarifying the sources, degrees, and historical pollution status of water bodies; they can study the physicochemical properties of bottom sediments, such as particle size distribution and mineral composition, to explore the evolution of aquatic sedimentary environments and sedimentary dynamics; and they can also assess the health status of aquatic ecosystems by analyzing the biological communities (such as benthic organisms and microorganisms) in the bottom sediments. Furthermore, they provide crucial data for pre-construction sediment surveys, post-construction ecological restoration monitoring, and the formulation of water resource protection strategies, serving as an important bridge connecting the study of the surface environment and bottom sedimentary processes in water bodies.

[0003] Existing grab bucket sediment extractors mainly consist of two movable jaws connected at the top by an iron chain. These jaws are then linked to external lifting equipment via wire ropes, hooks, and crossbeams. Under the tension of the wire rope, the jaws of the grab bucket tend to close, but this closing action is restricted by the iron chain attached to the hook on the cover plate. When the grab bucket sinks to the bottom, the heavier end of the hook droops automatically, causing the iron chain to disengage and releasing the restriction on the jaws. When the grab bucket is lifted, the wire rope tightens, the jaws close, and sediment is extracted.

[0004] This type of unhooking requires triggering by "gently releasing the rope," and the force and timing depend entirely on human judgment. Novices are prone to failure due to improper operation. The speed of increase also needs to be precisely controlled. Too fast and the sample may be thrown out due to inertia, while too slow and it may be washed away by the water flow.

[0005] Furthermore, the opening angle of the two jaws on existing grab samplers is fixed. To collect different amounts of sample mud, multiple grab samplers of different sizes must be used separately. This severely restricts collection efficiency and increases costs.

[0006] Therefore, there is an urgent need for a grab bucket mud collector with an adjustable opening angle that can solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to overcome the problems of the prior art and provide a grab bucket mud extractor with an adjustable opening angle. This solves the technical problems of existing grab bucket mud extractors, which rely on manual experience for unhooking and are prone to failure, and require multiple specifications of equipment to fix the jaw opening angle, resulting in difficult operation, low efficiency and high cost.

[0008] The above objectives are achieved through the following technical solutions: An adjustable-angle grab bucket mud extractor includes a left jaw lobe and a right jaw lobe hinged together by a pin to form a grab bucket. A pin assembly is provided at the hinge point of the left and right jaw lobes. The pin assembly includes a pin at the top of the left jaw lobe and a rod at the top of the right jaw lobe. The outer wall of the rod has at least one pin hole for the tip of the pin to be inserted. A first pull ring is symmetrically arranged on the front and rear sides of the left jaw lobe, a second pull ring is symmetrically arranged on the front and rear sides of the right jaw lobe, and a third pull ring is symmetrically arranged at both ends of the pin. Grab bucket support ropes are connected to the second pull rings, and the other ends of the two grab bucket support ropes pass through the first and third pull rings respectively and are connected to the grab bucket main rope. A rod pull ring is also provided on the outer wall of the rod. One end of the rod pull rope is connected to the rod pull ring, and the other end is connected to the grab bucket main rope.

[0009] Furthermore, the ejector pin assembly also includes an ejector pin bracket disposed on the top of the left palatal flap, with the ejector pin disposed at the axial position of the ejector pin bracket.

[0010] Furthermore, the ejector pin support is n-shaped.

[0011] Furthermore, the ejector pin assembly also includes an ejector rod hinge seat disposed on the right jaw flap, with one end of the ejector rod being movably connected to the ejector rod hinge seat.

[0012] Furthermore, the outer ends of the tops of the left and right jaw lobes are each provided with a pull cord buckle.

[0013] Furthermore, the top of the left and right jaw lobes are respectively provided with load-bearing positions.

[0014] Furthermore, the opening angle of the left and right jaw lobes is adjusted by a number of pinholes provided on the outer wall of the push rod. The more the push rod is inserted into the pinhole at the outermost end, the smaller the opening angle.

[0015] Furthermore, the depth of the needle hole is such that only a portion of the needle tip can be inserted.

[0016] Furthermore, the grab bucket support rope and the top rod pull rope are both connected to the grab bucket main rope to form a linkage structure.

[0017] Furthermore, the push rod can maintain its insertion with the push pin under the tension of the push rod pull rope, and can automatically disengage after the tension disappears.

[0018] This utility model provides a grab bucket mud sampler with an adjustable opening angle. The jaw opening angle is adjusted via a pin assembly to accommodate different sampling volumes, eliminating the need for multi-specification equipment and reducing costs while improving efficiency. An n-shaped pin bracket ensures stable insertion, a weighted area can be added to increase sampling depth, a shallow pin hole facilitates rapid pin detachment to prevent sample leakage, and a rope linkage simplifies operation and reduces reliance on experience. Specific beneficial effects are as follows: 1. The opening angle of the left and right jaw lobes can be adjusted through the ejector pin assembly. Multiple pin holes are set on the outer wall of the ejector pin. The ejector pin can be inserted into different pin holes to correspond to different opening angles, thereby adapting to the needs of different sampling volumes. There is no need to change to different specifications of mud samplers, which improves the sampling efficiency and reduces the cost.

[0019] 2. The ejector pin bracket is n-shaped, which can effectively avoid external interference, ensure the stability of the ejector pin and ejector rod during insertion and disengagement, and improve the reliability of the device.

[0020] 3. The ejector pin and ejector pin hinge are movably connected, allowing the ejector pin to rotate freely, which further ensures the docking accuracy of the ejector pin and the smoothness of disengagement.

[0021] 4. The pull rope buckle design allows for easy manual opening of the left and right jaw flaps, facilitating initial setup and operation of the device.

[0022] 5. A weight can be installed at the load position to increase the weight of the device, allowing it to be inserted deeper into the silt and improving the integrity of the sampling.

[0023] 6. The needle hole is shallow, allowing only the tip of the needle to be inserted. This allows the ejector pin and ejector rod to separate quickly after the tension disappears, ensuring timely closure of the palatal flap and preventing sample leakage.

[0024] 7. The grab bucket support rope and top rod pull rope are linked to the grab bucket main rope, simplifying operation and reducing reliance on operator experience; even beginners can operate it easily. Attached Figure Description

[0025] Figure 1 This is a first-view structural diagram of a grab bucket mud collector with an adjustable opening angle according to the present invention. Figure 2 This is a second-view structural diagram of a grab bucket mud collector with an adjustable opening angle according to the present invention. Figure 3 This is a schematic diagram showing the opening angle of the outermost pin hole of the top pin and the top rod of the adjustable opening angle grab bucket mud collector described in this utility model. Figure 4This is a schematic diagram showing the opening angle of the innermost pin hole of the top pin and the top rod of the adjustable opening angle grab bucket mud collector described in this utility model. Figure 5 This is a schematic diagram illustrating the tightening process of the main rope of the grab bucket in the grab bucket mud collector with an adjustable opening angle as described in this utility model. Figure 6 This is a schematic diagram showing the grab bucket closing after the grab bucket main rope of the grab bucket mud collector with adjustable opening angle is tightened, as described in this utility model.

[0026] Illustration markings: 1-Grab bucket, 101-Left jaw flap, 102-Right jaw flap, 103-First pull ring, 104-Second pull ring, 105-Third pull ring, 106-Grab bucket support rope, 107-Grab bucket main rope; 2-Ejector assembly, 201-Ejector, 202-Ejector rod, 203-Pin hole, 204-Pin tip, 205-Ejector rod pull ring, 206-Ejector rod pull rope, 207-Ejector bracket, 208-Ejector rod hinge seat; 3-Pin; 4- Pull cord buckle; 5-Load-bearing position. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] like Figure 1 and Figure 2 As shown, this solution provides a grab bucket mud collector with an adjustable opening angle, including a left jaw lobe 101 and a right jaw lobe 102 that are hinged together by a pin 3 to form a grab bucket 1. A pin assembly 2 is provided at the hinge of the left jaw lobe 101 and the right jaw lobe 102. The pin assembly 2 includes a pin 201 disposed on the top of the left jaw lobe 101 and a rod 202 disposed on the top of the right jaw lobe 102. The outer wall of the rod 202 is provided with at least one pin hole 203 into which the tip 204 of the pin 201 can be inserted.

[0029] A first pull ring 103 is symmetrically arranged on the anterior and posterior sides of the left jaw flap 101, a second pull ring 104 is symmetrically arranged on the anterior and posterior sides of the right jaw flap 102, and a third pull ring 105 is symmetrically arranged at both ends of the pin shaft. A grab bucket support rope 106 is connected to the second pull ring 104, and the other ends of the two grab bucket support ropes 106 pass through the first pull ring 103 and the third pull ring 105 respectively and are connected to the grab bucket main rope 107. The outer wall of the top rod 202 is also provided with a top rod pull ring 205. One end of the top rod pull rope 206 is connected to the top rod pull ring 205, and the other end is connected to the grab bucket main rope 107.

[0030] The ejector assembly 2 also includes an ejector bracket 207 disposed on the top of the left palatal flap 101, with the ejector pin disposed at the axial position of the ejector bracket 207; the ejector bracket 207 is n-shaped, which can ensure that external interference is avoided during operation, thereby ensuring the stable insertion and disengagement of the ejector pin 201 and the ejector rod 202.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the ejector pin assembly 2 also includes an ejector pin hinge seat 208 disposed on the right jaw flap 102. One end of the ejector pin 202 is movably connected to the ejector pin hinge seat 208, which can ensure the free rotation of the ejector pin 202.

[0032] The top outer ends of the left and right palatal lobes 101 and 102 are each provided with a pull rope buckle 4 for connecting a pull rope, which facilitates the operator's manual control of opening the left and right palatal lobes 101 and 102.

[0033] The top of the left jaw lobe 101 and the right jaw lobe 102 are respectively provided with a load position 5. The load position 5 is used to install a weight, thereby increasing the weight of the device and enabling it to penetrate deeper into the silt to grasp it.

[0034] The opening angle of the left palatal flap 101 and the right palatal flap 102 is adjusted by a number of pin holes 203 set on the outer wall of the push rod 202. The more the push rod 201 is inserted into the pin hole 203 at the outermost end, the smaller the opening angle.

[0035] The depth of the pinhole 203 is very shallow, allowing only part of the head of the pin tip 204 to be inserted, thus enabling the pin 201 to separate from the rod 202 more quickly after the tension disappears.

[0036] The grab bucket support rope 106 and the top rod pull rope 206 are both connected to the grab bucket main rope 107 to form a linkage structure.

[0037] The push rod 202 can maintain its insertion with the push pin 201 under the pulling force of the push rod rope 206, and can automatically disengage after the pulling force is removed.

[0038] like Figures 3-6 As shown, the working process is as follows: By opening the left jaw flap 101 and right jaw flap 102 to a certain opening angle, and inserting the tip 204 of the ejector pin 201 into the corresponding pin hole 203 on the outer wall of the ejector rod 202, and then applying an upward pulling force to the ejector rod 202 through the ejector rod pull rope 206, the ejector rod 202 is kept in the insertion state with the ejector pin 201, thereby achieving the holding of the grab bucket 1 open but not closed; at this time, the opening angle can be adjusted by selecting different positions of the pin hole 203 as needed to adapt to different sampling volume requirements.

[0039] Once the grab bucket 1 in this state comes into contact with the water surface, the tension acting on the push rod 202 will disappear instantly. The push rod 202 will sink under its own weight, causing the needle hole 203 to detach from the needle tip 204, thus achieving support unlocking.

[0040] When the left jaw lobe 101 and right jaw lobe 102 come into contact with the mud surface at the bottom of the water, due to the weight of the device itself (or the weight of the weight block installed at the load position 5), the left jaw lobe 101 and right jaw lobe 102 will extend into the silt to a certain depth. When the device stops sinking, the grab bucket main rope 107 is pulled up, causing the left jaw lobe 101 and right jaw lobe 102 to lock around the pin 3, thus trapping the collected silt sample into the inner cavity of the grab bucket 1. At this time, the push rod 202 is located outside the push pin bracket 207 and will not be inserted into the push pin 201.

[0041] Finally, by continuously pulling the grab bucket rope 107 upwards, the grab bucket 1 containing the sludge sample can be retrieved, completing the sampling process.

[0042] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grab bucket mud harvester with an adjustable opening angle, characterized in that, The device includes a left jaw lobe (101) and a right jaw lobe (102) that are hinged together by a pin (3) to form a grab (1). A pin assembly (2) is provided at the hinge of the left jaw lobe (101) and the right jaw lobe (102). The pin assembly (2) includes a pin (201) disposed on the top of the left jaw lobe (101) and a push rod (202) disposed on the top of the right jaw lobe (102). The outer wall of the push rod (202) is provided with at least one pin hole (203) into which the tip (204) of the pin (201) can be inserted. The left jaw lobe (101) is symmetrically provided with a first pull ring (103) on its anterior and posterior sides, the right jaw lobe (102) is symmetrically provided with a second pull ring (104) on its anterior and posterior sides, and a third pull ring (105) is symmetrically provided at both ends of the pin shaft. The second pull ring (104) is connected to a grab bucket support rope (106), and the other ends of the two grab bucket support ropes (106) pass through the first pull ring (103) and the third pull ring (105) respectively and are connected to the grab bucket main rope (107). The outer wall of the top rod (202) is also provided with a top rod pull ring (205), one end of the top rod pull rope (206) is connected to the top rod pull ring (205), and the other end is connected to the grab bucket main rope (107).

2. The grab bucket mud collector with adjustable opening angle according to claim 1, characterized in that, The pin assembly (2) further includes a pin bracket (207) disposed on the top of the left palatal flap (101), and the pin (201) is disposed at the axial position of the pin bracket (207).

3. The grab bucket mud collector with adjustable opening angle according to claim 2, characterized in that, The ejector pin support (207) is n-shaped.

4. The grab bucket mud harvester with adjustable opening angle according to claim 1, characterized in that, The ejector pin assembly (2) also includes an ejector pin hinge seat (208) disposed on the right jaw flap (102), one end of the ejector pin (202) being movably connected to the ejector pin hinge seat (208).

5. A grab bucket mud collector with an adjustable opening angle according to claim 1, characterized in that, The outer ends of the top of the left jaw lobe (101) and the right jaw lobe (102) are respectively provided with pull cord buckles (4).

6. A grab bucket mud harvester with an adjustable opening angle according to claim 1, characterized in that, The top of the left jaw flap (101) and the right jaw flap (102) are respectively provided with a load-bearing position (5).

7. A grab bucket mud harvester with an adjustable opening angle according to claim 1, characterized in that, The opening angle of the left jaw flap (101) and the right jaw flap (102) is adjusted by a number of pin holes (203) set on the outer wall of the push rod (202). The opening angle is smaller when the push pin (201) is inserted into the pin hole (203) at the outermost end.

8. A grab bucket mud collector with an adjustable opening angle according to claim 1, characterized in that, The depth of the pinhole (203) is only for a portion of the tip of the needle (204) to be inserted.

9. A grab bucket mud collector with an adjustable opening angle according to claim 1, characterized in that, The grab bucket support rope (106) and the top rod pull rope (206) are both connected to the grab bucket main rope (107) to form a linkage structure.

10. A grab bucket mud collector with an adjustable opening angle according to claim 1, characterized in that, The push rod (202) can maintain its insertion with the push pin (201) under the pulling force of the push rod pull rope (206), and can automatically disengage after the pulling force disappears.

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