River and lake bottom mud sampling device

Abstract

The utility model relates to the field of bottom mud sampling, in particular to a river and lake bottom mud sampling device which comprises a stand column and two grab buckets, the lower end face of the stand column is fixedly connected with a connecting block, the outer wall of the connecting block is fixedly connected with a connecting shaft, and the outer walls of the two grab buckets are fixedly connected with L-shaped supports rotationally connected with the connecting shaft. The outer wall of the stand column is fixedly connected with a fixed cone frustum, the outer wall of the stand column is slidably connected with a movable cone frustum located on the lower side of the fixed cone frustum, the outer wall of the stand column is sleeved with a sleeve, and the outer wall of the sleeve is rotationally connected with a plurality of circumferentially-distributed clamping jaws through hinged supports. Lifting ropes are fixedly connected between the outer wall of the sleeve and the two L-shaped supports, through cooperation of the sleeve, the stand columns, the connecting shafts, the L-shaped supports, the clamping jaws, the fixed circular truncated cones, the movable circular truncated cones and the balancing weights, the two grab buckets can be automatically closed when the sleeve is pulled upwards after the grab buckets make contact with the bottom, manual intervention or extra power is not needed, the operation complexity is reduced, and the sampling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bottom mud sampling, and specifically discloses a river and lake bottom mud sampling device. BACKGROUND

[0002] In hydrological monitoring, environmental evaluation and scientific research of water bodies such as rivers and lakes, bottom mud sampling is a basic and key work. As the main accumulation carrier of water pollutants, the physical properties, chemical composition and biological community characteristics of bottom mud can directly reflect the pollution history, ecological health status and sedimentary environment changes of water bodies. Therefore, obtaining representative bottom mud samples is of great significance for water quality evaluation, pollution tracing, ecological restoration and geological research.

[0003] At present, the mud samplers for collecting shallow mud samples or sediments in deep water bodies mainly include grab bucket type mud samplers and column type mud samplers. Generally, the grab bucket type mud sampler usually includes a device for controlling the opening of the grab bucket. When the grab bucket type mud sampler is sampling, the device needs to be manually disconnected from the control of the grab bucket. When sampling in deep water, it is difficult to judge whether the control of the grab bucket is disconnected by the naked eye. When the control of the grab bucket is not completely disconnected, the grab bucket will be difficult to close, which will cause the failure of mud sampling. Therefore, a river and lake bottom mud sampling device is needed to solve this problem. SUMMARY

[0004] The utility model provides a kind of river and lake bottom mud sampling device, can be pulled sleeve upwards when grab bucket touches bottom, two grab buckets are automatically closed, without manual intervention or additional power, significantly reduce the complexity of operation, improve sampling efficiency.

[0005] The utility model is realized as follows: a kind of river and lake bottom mud sampling device, including stand and two grab buckets, the lower end surface of the stand is fixedly connected with connecting block, the outer wall of the connecting block is fixedly connected with connecting shaft, the outer wall of two grab buckets is fixedly connected with L-shaped support that is rotationally connected with connecting shaft, the outer wall of the stand is fixedly connected with fixed conical table, the outer wall of the stand is slidably connected with movable conical table located in the lower side of fixed conical table, the outer wall of the sleeve is rotationally connected with multiple circumferentially distributed clamping jaws by hinged base, and the outer wall of the sleeve is fixedly connected with lifting rope between two L-shaped supports.

[0006] As a kind of river and lake bottom mud sampling device of the utility model is preferred, the upper side of the outer wall of two L-shaped supports is fixedly connected with two symmetrically distributed counterweights.

[0007] As a kind of river and lake bottom mud sampling device of the utility model is preferred, the upper end surface of the sleeve is fixedly connected with lifting ring, and the outer wall of the lifting ring is fixedly connected with pulling rope.

[0008] The lower end face of the fixed conical table is provided with a clamping groove.

[0009] As a kind of river and lake bottom mud sampling device preferred of the utility model, the size of fixed conical table and movable conical table is equal, and the diameter of one end is relatively arranged.

[0010] As a kind of river and lake bottom mud sampling device preferred of the utility model, the lower end of the clamping jaw is provided with a fillet.

[0011] As a kind of river and lake bottom mud sampling device preferred of the utility model, the outer wall of the clamping jaw is provided with a protruding block matched with the clamping groove.

[0012] The utility model has the advantages of:

[0013] 1, through sleeve, stand, connecting shaft, L-shaped support, clamping jaw, fixed conical table, movable conical table, counterweight cooperation, when sleeve is pulled up after grab bucket touches bottom, two grab buckets are automatically closed, without manual intervention or additional power, operation complexity is reduced significantly, sampling efficiency is improved;

[0014] 2, all moving parts (sleeve, clamping jaw, conical table) adopt sliding / hinged cooperation, without precision electronic components, resist silt accumulation and corrosion, can be quickly disassembled and maintained, suitable for long-term field operation. DRAWINGS

[0015] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the drawings needed in the specific embodiment or prior art description will be briefly introduced below. In all drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, various elements or parts are not necessarily drawn according to actual proportion.

[0016] Figure 1 It is the overall structural drawing of the river and lake bottom mud sampling device of the utility model;

[0017] Figure 2 It is the structure drawing of the river and lake bottom mud sampling device after grabbing soil of the utility model;

[0018] Figure 3 It is the structure drawing of the stand of the utility model;

[0019] Figure 4 It is the sectional view of the stand of the utility model;

[0020] Figure 5 It is the structure drawing of the clamping jaw of the utility model.

[0021] Marked in the figure, 1, stand; 2, connecting block; 3, connecting shaft; 4, sleeve; 5, grab bucket; 6, L-shaped support; 7, clamping jaw; 8, fixed conical table; 9, movable conical table; 10, counterweight; 11, lifting ring; 12, pulling rope; 13, clamping groove; 14, lifting rope. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the drawings and specific embodiments to help understanding the contents of the utility model. The method used in the utility model is conventional method if no special provision; the raw materials and devices used are conventional market products if no special provision.

[0023] Please refer to Figures 1-5 A river and lake sediment sampling device, including stand 1 and two grab buckets 5, the lower end surface of stand 1 is fixedly connected with connecting block 2, the outer wall of connecting block 2 is fixedly connected with connecting shaft 3, the outer wall of two grab buckets 5 is fixedly connected with L-shaped support 6 that is rotationally connected with connecting shaft 3, the outer wall of stand 1 is fixedly connected with fixed conical table 8, the outer wall of stand 1 is slidably connected with movable conical table 9 that is located at the lower side of fixed conical table 8, the outer wall of stand 1 is sleeved with sleeve 4, the outer wall of sleeve 4 is rotationally connected with multiple circumferentially distributed clamping jaws 7 through hinged base, and the outer wall of sleeve 4 and two L-shaped supports 6 are fixedly connected with lifting rope 14.

[0024] In the embodiment: in the initial state (as shown in Figure 1 ), clamping jaw 7 is clamped in the clamping groove 13 of fixed conical table 8, sleeve 4 hoists stand 1 through clamping jaw 7 and fixed conical table 8, thereby hoisting two grab buckets 5, at this time, two grab buckets 5 are reversely rotated along connecting shaft 3 under the action of counterweight 10, so that two grab buckets 5 are opened, when sampling, the device is slowly put into water by releasing pulling rope 12, when grab bucket 5 touches the bottom, continue to release pulling rope 12, so that sleeve 4 continues to move downward along stand 1 under the action of its own gravity until the lowest position, further drive multiple clamping jaws 7 to move downward, clamping jaw 7 is out of the clamping groove 13 of fixed conical table 8, moves downward to the lower side of movable conical table 9, then pulls pulling rope 12 upward, further drives sleeve 4 to move upward along stand 1, sleeve 4 further drives movable conical table 9 to slide upward along stand 1 through clamping jaw 7, so that movable conical table 9 is attached to fixed conical table 8, thereby enabling clamping jaw 7 to move to the upper side of fixed conical table 8, at this time, continue to pull sleeve 4 upward through pulling rope 12 until lifting rope 14 is taut, continue to pull pulling rope 12, then drive two L-shaped supports 6 to relatively rotate along connecting shaft 3 through lifting rope 14, further drive two grab buckets 5 to relatively rotate, close two grab buckets 5 (as shown in Figure 2The utility model discloses a sampling device, which comprises a fixed conical table 8, a movable conical table 9, a sleeve 4, two clamping jaws 7 and two grab buckets 5.

[0025] As a technical optimization scheme of the utility model, the upper side of the outer wall of the two L-shaped supports 6 is fixedly connected with two symmetrical counterweight blocks 10.

[0026] In the embodiment: by setting the counterweight block 10, the two grab buckets 5 are in the open state in the initial state.

[0027] As a technical optimization scheme of the utility model, the upper end surface of the sleeve 4 is fixedly connected with a lifting ring 11, and the outer wall of the lifting ring 11 is fixedly connected with a pulling rope 12.

[0028] In the embodiment: by setting the lifting ring 11 and the pulling rope 12, the lifting and releasing device is facilitated, and the other end of the pulling rope 12 can be pulled by manpower or by setting an electric hoist.

[0029] As a technical optimization scheme of the utility model, the lower end surface of the fixed conical table 8 is provided with a clamping groove 13.

[0030] In the embodiment: by setting the clamping groove 13 on the lower end surface of the fixed conical table 8, the clamping jaw 7 is clamped at the lower end of the fixed conical table 8.

[0031] As a technical optimization scheme of the utility model, the size of the fixed conical table 8 and the movable conical table 9 is equal, and the larger-diameter ends are oppositely arranged.

[0032] In the embodiment: by setting the size of the fixed conical table 8 and the movable conical table 9 to be equal and oppositely arranging the larger-diameter ends, the clamping jaw 7 is facilitated to move on the outer wall of the fixed conical table 8 and the movable conical table 9.

[0033] As a technical optimization scheme of the utility model, the lower end of the clamping jaw 7 is provided with a rounded corner.

[0034] In the embodiment: by setting the rounded corner at the lower end of the clamping jaw 7, the clamping jaw 7 is facilitated to move to the lower side of the movable conical table 9.

[0035] As a technical optimization scheme of the utility model, the outer wall of the clamping jaw 7 is provided with a protruding block matched with the clamping groove 13.

[0036] In the embodiment: by setting the protruding block on the outer wall of the clamping jaw 7, the clamping jaw 7 is facilitated to be clamped in the clamping groove 13.

[0037] The working principle and use process of the utility model are as follows: in the initial state (for example, as shown in the figure), the two grab buckets 5 are in the open state. Figure 1When the two grab buckets 5 are closed (as shown in FIG. 1), the clamping jaws 7 are clamped in the clamping grooves 13 of the fixed conical frustum 8, the sleeve 4 lifts the stand 1 through the clamping jaws 7 and the fixed conical frustum 8, thereby lifting the two grab buckets 5, at this time, the two grab buckets 5 are reversely rotated along the connecting shaft 3 under the action of the counterweight 10, so that the two grab buckets 5 are opened, when sampling, the device is slowly put into water by releasing the pulling rope 12, when the grab buckets 5 touch the bottom, the pulling rope 12 is continuously released, so that the sleeve 4 continuously moves downward along the stand 1 under the action of its own gravity until the lowest position, and then the clamping jaws 7 are driven to move downward, the clamping jaws 7 are out of the clamping grooves 13 of the fixed conical frustum 8 and move downward to the lower side of the movable conical frustum 9, then the pulling rope 12 is pulled upward, thereby driving the sleeve 4 to move upward along the stand 1, the sleeve 4 further drives the movable conical frustum 9 to slide upward along the stand 1, so that the movable conical frustum 9 is attached to the fixed conical frustum 8, thereby enabling the clamping jaws 7 to move to the upper side of the fixed conical frustum 8, at this time, the sleeve 4 is continuously pulled upward through the pulling rope 12 until the lifting rope 14 is taut, and the pulling rope 12 is continuously pulled, so that the two L-shaped supports 6 are relatively rotated along the connecting shaft 3 through the lifting rope 14, thereby relatively rotating the two grab buckets 5, and closing the two grab buckets 5 (as shown in FIG. 1), and sampling is completed. Figure 2 When the sleeve 4 is pulled upward after the grab buckets 5 touch the bottom, the two grab buckets 5 are automatically closed, without manual intervention or additional power, the operation complexity is significantly reduced, and the sampling efficiency is improved.

[0038] In the description of the utility model, it is understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0039] The above is only a specific embodiment of the utility model, which cannot limit the range of the utility model, so that the replacement of equivalent components or equivalent changes and modifications made in the protection range of the utility model patent still belong to the scope covered by the claims of the utility model.

Claims

1. A river and lake sediment sampling device, characterized in that: The utility model relates to a kind of double grab bucket crane, including column (1) and two grab buckets (5), the lower end surface of the column (1) is fixedly connected with connecting block (2), the outer wall of the connecting block (2) is fixedly connected with connecting shaft (3), the outer wall of two the grab bucket (5) is fixedly connected with the L-shaped support (6) of rotation connection with connecting shaft (3), the outer wall of the column (1) is fixedly connected with fixed frustum (8), the outer wall of the column (1) is slidably connected with the movable frustum (9) of being located in fixed frustum (8) lower side, the outer wall of the sleeve (4) of the column (1) is sleeved, the outer wall of the sleeve (4) is rotatably connected with multiple circumferentially distributed clamping jaw (7) by hinged base, the outer wall of the sleeve (4) is fixedly connected with sling (14) between two L-shaped supports (6).

2. The river and lake sediment sampling device according to claim 1, characterized in that: The upper side of the outer wall of two the L-shaped support (6) is fixedly connected with two symmetrically distributed counterweight blocks (10).

3. The river and lake sediment sampling device according to claim 1, characterized in that: The upper end surface of the sleeve (4) is fixedly connected with lifting ring (11), the outer wall of the lifting ring (11) is fixedly connected with pull rope (12).

4. The river and lake sediment sampling device according to claim 1, characterized in that: The lower end surface of the fixed frustum (8) is provided with clamping groove (13).

5. The river and lake sediment sampling device according to claim 1, characterized in that: The fixed frustum (8) and movable frustum (9) are equal in size, and the larger diameter end is oppositely arranged.

6. The river and lake sediment sampling device according to claim 1, characterized in that: The lower end of the clamping jaw (7) is provided with a rounded corner.

7. The river and lake sediment sampling device according to claim 4, characterized in that: The outer wall of the clamping jaw (7) is provided with a protrusion matched with the clamping groove (13).

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