Shear type bottom mud sampler

Abstract

The utility model relates to the field of bottom mud sampling, and discloses a shear type bottom mud sampler which comprises a supporting frame, a telescopic rod is fixedly connected to the right side of the supporting frame, a mounting block is fixedly connected to the right side of the telescopic rod, an upper grab bucket is fixedly connected to the right side of the mounting block, and a lower grab bucket is rotationally connected to the lower side, close to the upper grab bucket, of the inner wall of the mounting block. The upper side of the lower grab bucket is elastically connected with the mounting block through an extension spring, a moving block is slidably connected to the inner wall of the supporting frame, the inner wall of the right side of the moving block is slidably connected to the outer side of the telescopic rod, and a grabbing assembly is arranged on the inner wall of the moving block. According to the river bottom sludge sampling device, the upper grab bucket, the lower grab bucket, the pull handle, the telescopic rod and the grabbing assembly are used in cooperation, when river bottom sludge is sampled on the shore, the length of the connecting line is controlled through the ratchet wheel and the pawl so as to adapt to the telescopic length of the telescopic rod, then the pull handle is pulled to drive the grab buckets to be closed, and therefore the sampling efficiency and practicability are improved.

Description

Technical Field

[0001] The utility model relates to the field of bottom sediment sampling, in particular to a shear-type bottom sediment sampler. Background Art

[0002] Sampling and testing of bottom sediments in rivers, lakes and other water systems is an important part of ecological environmental monitoring. Currently, sampling of bottom sediments in water systems is mostly carried out using grab samplers.

[0003] The existing grab-type sediment sampler consists of a grab, a handle, a water control rope, a water ring, a position control rod, etc.

[0004] The existing grab-type sampler is suitable for sampling bottom sediment on bridges and ships. However, for sampling micro-river bottom sediment that is not suitable for navigation, the grab-type bottom sediment sampler needs to be thrown from the shore, which is more laborious and reduces the efficiency and practicality of sampling. Therefore, a scissor-type bottom sediment sampler is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a scissor-type bottom sediment sampler, which aims to improve the problem in the existing technology that "the existing grab-type sampler is convenient for sampling on bridges and ships, but requires laborious throwing when operating on the banks of micro-rivers, which reduces sampling efficiency and practicality."

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[0007] As a further description of the above technical solution:

[0008] The left side of the wire wheel is elastically connected to the support frame through two compression springs. The front side of the wire wheel is fixedly connected to a ratchet. The inner wall of the moving block is rotatably connected to a pawl, and the left side of the pawl slides on the outside of the ratchet.

[0009] As a further description of the above technical solution:

[0010] The inner wall of the upper side of the pawl is hinged with a hinge rod, the hinge rod is elastically connected to the moving block through a compression spring, and the top end of the hinge rod is fixedly connected with a pulling block.

[0011] As a further description of the above technical solution:

[0012] The pull block is arranged in a C shape.

[0013] As a further description of the above technical solution:

[0014] The connecting line slides on the telescopic rod and the inner wall of the mounting block.

[0015] As a further description of the above technical solution:

[0016] A limiting assembly is provided on the inner wall of the handle, and the limiting assembly includes a limiting plate. The outer side of the limiting plate is slidably connected to the inner wall of the handle, and the front side of the limiting plate is elastically connected to the handle via a reset spring.

[0017] As a further description of the above technical solution:

[0018] The support frame is provided with a limiting groove near the rear side of the handle.

[0019] As a further description of the above technical solution:

[0020] The limiting plate is configured to be U-shaped.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by cooperating with the upper grab bucket, the lower grab bucket, the pull handle, the telescopic rod and the gripping assembly, when sampling the riverbed mud on the shore, the length of the connecting line is controlled by the ratchet pawl to adapt to the telescopic length of the telescopic rod, and then the grab bucket is driven to close by pulling the pull handle, thereby improving the efficiency and practicality of sampling.

[0023] 2. In the present invention, through the coordinated use of the support frame, the handle and the limit assembly, after the sampling is completed, the elastic force of the reset spring drives the limit plate to automatically insert into the limit groove, thereby facilitating the operator to perform the collection operation and improving the smoothness of subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the present utility model;

[0025] Figure 2 This is a front-view three-dimensional structural cross-sectional diagram of the mounting block in the present invention;

[0026] Figure 3 This is a front perspective cross-sectional diagram of the support frame and the moving block in the present invention;

[0027] Figure 4 This is a front-view three-dimensional structural cross-sectional diagram of the moving block in the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the limit assembly in the utility model.

[0029] Legend:

[0030] 1. Support frame; 2. Telescopic rod; 3. Mounting block; 4. Upper grab; 5. Lower grab; 6. Tension spring; 7. Moving block; 71. Wire pulley; 72. Connecting line; 73. Ratchet; 74. Pawl; 75. Articulated rod; 76. Compression spring 1; 77. Pull block; 78. Compression spring 2; 8. Pull handle; 81. Limit plate; 82. Return spring; 83. Limit slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a scissor-type sediment sampler, including a support frame 1, which is convenient for the operator to hold the device and perform sampling operations, and at the same time provides a stable moving space for the moving block 7. The right side of the support frame 1 is fixedly connected to a telescopic rod 2, which can adjust the length of the sampler by telescoping, so as to facilitate sediment sampling in waters of different depths. This technology is a prior art, so it will not be described in detail. The right side of the telescopic rod 2 is fixedly connected to a mounting block 3 for providing an installation position for the upper grab bucket 4 and the lower grab bucket 5. The right side of the mounting block 3 is fixedly connected to the upper grab bucket 4, which cooperates with the lower grab bucket 5 to grab the sediment during sampling. The inner wall of the mounting block 3 is close to the lower wall of the upper grab bucket 4. The side is rotatably connected to the lower grab 5. When the connecting line 72 pulls the bottom left end of the lower grab 5, the lower grab 5 rotates around the rotating connection point with the mounting block 3 and closes with the upper grab 4 to achieve the grabbing of the bottom mud. The upper side of the lower grab 5 is elastically connected to the mounting block 3 through the tension spring 6. In the initial state, the lower grab 5 and the upper grab 4 are in an open state. At the same time, after sampling and when the limit on the lower grab 5 is released, the lower grab 5 can be automatically opened to facilitate the next sampling. The inner wall of the support frame 1 is slidably connected with a moving block 7 to provide an installation space for the gripping assembly. At the same time, the connecting line 72 is stretched by the movement of the moving block 7, thereby driving the lower grab 5 to close.

[0033] The lower end of the line wheel 71 is fixedly connected to the inner wall of the line wheel 71, and the other end of the line wheel 72 is fixedly connected to the lower left bottom end of the lower grab 5. The bottom end of the line wheel 71 is fixedly connected to the pulley 71, which is convenient for the operator to pull the moving block 7 with one hand, thereby pulling the connecting line 72.

[0034] Reference Figure 3 and Figure 4 When the lever 7 is unlocked, the lever 78 is unlocked and the lock is unlocked, so the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, and the lock is in the unlock state, The upper inner wall is hinged with an articulated rod 75, which drives the pawl 74 to rotate upward by pulling the pull block 77, releasing the limit on the ratchet 73. At this time, the crank handle is turned to drive the wire wheel 71 to rotate and pay out the connecting wire 72 to adapt to telescopic rods 2 of different lengths. The articulated rod 75 is elastically connected to the moving block 7 by a compression spring 76, which squeezes the articulated rod 75 so that the pawl 74 fits the outside of the ratchet 73. The top of the articulated rod 75 is fixedly connected to a pull block 77, which is set to a C shape to facilitate the operator to pull the articulated rod 75.

[0035] Reference Figure 3 and Figure 5 A limiting component is provided on the inner wall of the handle 8, and the limiting component includes a limiting plate 81. When the handle 8 is pulled, the limiting plate 81 is inserted into the limiting groove 83 on the rear side of the support frame 1 to prevent the handle 8 from automatically resetting under the action of the compression spring 278, thereby ensuring that the lower grab bucket 5 remains stable when grabbing the bottom mud. The outer side of the limiting plate 81 is slidably connected to the inner wall of the handle 8, and the front side of the limiting plate 81 is elastically connected to the handle 8 by a reset spring 82, which provides elastic restoring force for the limiting plate 81, so that the upper side of the limiting plate 81 can automatically insert into the inner wall of the limiting groove 83.

[0036] Furthermore, the support frame 1 is provided with a limiting groove 83 near the rear side of the pull handle 8, which cooperates with the limiting plate 81 to limit the position of the pull handle 8, ensuring that the lower grab bucket 5 remains stable when grabbing the bottom mud, while facilitating the operator to perform collection operations and improving the smoothness of subsequent work. The limiting plate 81 is set to a U shape, and the operator presses the lower side of the limiting plate 81 to squeeze the return spring 82, so that the upper side of the limiting plate 81 slides out from the inner wall of the limiting groove 83, quickly releasing the limit on the pull handle 8 and the moving block 7.

[0037] Working principle: When in use, the operator holds the support frame 1 and adjusts the length of the telescopic rod 2 according to the depth of the sampling water area. At this time, the operator pulls the pull block 77, squeezes the compression spring 76 through the hinged rod 75, drives the pawl 74 to rotate upward, releases the limit on the ratchet 73, and then adjusts the length of the telescopic rod 2, drives the wire wheel 71 to rotate, and retracts and releases the connecting line 72 to adapt to telescopic rods 2 of different lengths. When the adjustment is completed, release the pull block 77, and the elastic force of the compression spring 76 drives the pawl 74 to reset, limit the ratchet 73, and thus limit the wire wheel 71.

[0038] At this time, the operator pulls the handle 8, driving the movable block 7 to move and stretching the connecting line 72. One end of the connecting line 72 is fixedly connected to the bottom end of the left side of the lower grab 5, so that the lower grab 5 rotates around the rotating connection point with the mounting block 3, and gradually closes with the upper grab 4 to achieve the grabbing of the bottom mud.

[0039] When the handle 8 is pulled to a certain position, the limit plate 81 provided on the inner wall of the handle 8 is inserted into the limit groove 83 opened on the rear side of the support frame 1 under the elastic action of the reset spring 82, preventing the handle 8 from automatically resetting under the action of the compression spring 2 78, thereby ensuring that the lower grab bucket 5 remains stable when grabbing the bottom mud.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A scissor-type sediment sampler, comprising a support frame (1), characterized in that: The right side of the support frame (1) is fixedly connected to a telescopic rod (2), the right side of the telescopic rod (2) is fixedly connected to a mounting block (3), the right side of the mounting block (3) is fixedly connected to an upper grab (4), the inner wall of the mounting block (3) is rotatably connected to a lower grab (5) near the lower side of the upper grab (4), the upper side of the lower grab (5) is elastically connected to the mounting block (3) via a tension spring (6), the inner wall of the support frame (1) is slidably connected to a moving block (7), and the inner wall of the right side of the moving block (7) is slidably connected to the lower side of the upper grab (4). Connected to the outside of the telescopic rod (2), the inner wall of the moving block (7) is provided with a gripping assembly, the gripping assembly includes a wire wheel (71), the outer side of the wire wheel (71) is rotatably connected to the inner wall of the moving block (7), the inner side of the wire wheel (71) is wound with a connecting wire (72), one end of the connecting wire (72) is fixedly connected to the inner wall of the wire wheel (71), the other end of the connecting wire (72) is fixedly connected to the bottom end of the left side of the lower grab (5), and the bottom end of the wire wheel (71) is fixedly connected to a pull handle (8).

2. A scissor-type bottom sediment sampler according to claim 1, characterized in that: The left side of the wire wheel (71) is elastically connected to the support frame (1) via a second compression spring (78), the front side of the wire wheel (71) is fixedly connected to a ratchet (73), the inner wall of the moving block (7) is rotatably connected to a pawl (74), and the left side of the pawl (74) slides outside the ratchet (73).

3. A scissor-type bottom sediment sampler according to claim 2, characterized in that: The upper inner wall of the ratchet (74) is hinged with a hinged rod (75), the hinged rod (75) is elastically connected to the moving block (7) via a compression spring (76), and the top end of the hinged rod (75) is fixedly connected with a pull block (77).

4. A scissor-type bottom sediment sampler according to claim 3, characterized in that: The pull block (77) is configured to be C-shaped.

5. A scissor-type bottom sediment sampler according to claim 1, characterized in that: The connecting line (72) slides on the inner wall of the telescopic rod (2) and the mounting block (3).

6. A scissor-type bottom sediment sampler according to claim 1, characterized in that: The inner wall of the pull handle (8) is provided with a limit assembly, and the limit assembly includes a limit plate (81). The outer side of the limit plate (81) is slidably connected to the inner wall of the pull handle (8), and the front side of the limit plate (81) is elastically connected to the pull handle (8) via a return spring (82).

7. The scissor-type sediment sampler according to claim 1, characterized in that: The support frame (1) is provided with a limiting groove (83) near the rear side of the pull handle (8).

8. The scissor-type bottom sediment sampler according to claim 6, characterized in that: The limiting plate (81) is configured in a U shape.

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