Drill rod detector for detecting thickness of flow plastic bottom mud

Abstract

The utility model relates to the field of engineering survey, and particularly discloses a drill rod detector for detecting the thickness of flow plastic bottom mud, which comprises a probe rod and a handle, an interface disc is arranged at the lower part of the probe rod, the handle is sleeved on the probe rod, the probe rod is in sliding fit with the handle, and a first spring is arranged between the probe rod and the handle. And two ends of the first spring are respectively connected with the probe rod and the handle. According to the drill rod detector for detecting the thickness of the flow plasticity bottom mud, the problem that the credibility of detection data is insufficient due to large acting force errors is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engineering survey, specifically relates to the field of river channel sediment detection. BACKGROUND

[0002] The widely distributed rivers, lakes and reservoirs are the main carriers of water resources, and with the in-depth study of the pollution water treatment problem, the role of the sediment in the water ecological system is paid more and more attention. The contaminated sediment will become the source of pollutants under certain conditions, release the contained pollutants into the water and further cause the water quality to deteriorate or delay the water quality improvement time. Moreover, due to the different types of pollution suffered, the sediment usually contains one or more of the nutrients, heavy metals and persistent organic matter, which produces obvious or potential threat to the water ecological system.

[0003] Research shows that the sediment accumulated in rivers, lakes or reservoirs within 20-30 years has the properties of high water content, small density and low strength due to not completing self-weight consolidation. Since the water content is close to the liquid limit water content, it is in a plastic state, which is often referred to as "flowing mud" in engineering. There is a significant difference in properties between this part of the sediment and the sediment at the bottom of the river, lake or reservoir which has completed self-weight consolidation, so the thickness of the flowing plastic sediment is often detected to determine the degree of sediment accumulation, and therefore the detection of the flowing plastic sediment becomes one of the important works of river, lake and reservoir management, especially the accumulation management.

[0004] The flowing plastic sediment generally has a total water content greater than 55%, a density of 1.20-1.40 g / cm3 and a small penetration strength, generally in the range of 10-30 kPa. For the detection of the sediment, the current mainstream methods include the contact method and the non-contact method. The contact method is the traditional way, which uses a sampling device to obtain the sediment sample within a certain thickness, but the sediment sampling work is large, the technical requirements are high, the cost is high, and it is often difficult to implement in large quantities. The non-contact exploration mainly relies on the principle that the ultrasonic wave is reflected when it encounters different density interfaces, and the mud-water interface position and the flowing mud-hard bottom interface position are tested by a multi-frequency Doppler density meter to obtain the thickness of the flowing mud. Compared with the contact detection, the non-contact detection is more accurate and efficient, but these methods have high requirements for the equipment.

[0005] The probe currently used in the contact method is shown in the river channel sediment thickness measuring device disclosed in the patent No. CN206430670U, which comprises an outer sleeve rod and an inner long rod. The upper end of the outer sleeve rod is an operating handle, and the lower end is a disc. The disc is marked with length from top to bottom, and the 0 scale line is aligned with the lower end of the operating handle. The disc is fixed with the outer sleeve rod as a whole. The upper end of the inner long rod is provided with an operating handle, and the lower end is a vertebral body. The length of the outer sleeve rod below the operating handle is equal to the length of the whole inner long rod. During operation, the outer sleeve rod and the inner long rod are vertically placed in the river channel to be measured. When the disc is subjected to the resistance of the sediment, the pressure on the surface of the object is inversely proportional to the contact area. When the disc fixed at the lower end of the outer sleeve rod and the sharp part of the vertebral body act on the sediment, the pressure on the sediment is greatly different. Therefore, when the outer sleeve rod is loosened and the inner long rod is continuously pressed, the inner long rod is inserted into the sediment under the action of its own weight and the applied external force. At this time, there is relative movement between the inner long rod and the outer sleeve rod. Finally, when the inner long rod is subjected to a large resistance, the force is stopped. At this time, the length of the inner long rod inserted into the sediment is the thickness of the sediment in the measured river channel.

[0006] However, when the above device is used, the inner long rod is inserted into the sediment under the action of the external force. Limited by the strength of the operator, the subjective and objective factors such as the shape and thickness of the probe, and the intuitive feeling of different operators using the probe has great difference, resulting in large error of the survey results and insufficient reliability of the data. Practical new type content

[0007] The utility model intends to provide a kind of for detecting the thickness of flow plastic sediment probe detector, to solve the problem of insufficient reliability of detection data caused by large force error.

[0008] To achieve the above purpose, the utility model adopts the following technical scheme: the probe detector for detecting the thickness of flow plastic sediment, including probe rod and handle, the lower part of probe rod is equipped with interface disc, handle is sleeved on probe rod and probe rod and handle are slidably connected, first spring is arranged between probe rod and handle, and two ends of first spring are connected with probe rod and handle respectively.

[0009] The beneficial effects of the present scheme are as follows:

[0010] The probe rod in the scheme is used for inserting into the bottom mud to measure the thickness of the bottom mud, and when the probe instrument is used, the hands of the operator do not directly contact the probe rod, but the handle is first pressed downward, and then the probe rod is inserted downward through the action of the first spring between the handle and the probe rod. Compared with the direct contact of the hands with the probe rod, when the probe rod is inserted downward through the first spring, because the specification of the first spring of the unified probe instrument is unchanged, even if different operators use it, the same length of the first spring is controlled to elongate or compress, so that the downward force received by the probe rod is the same. Therefore, the detection data in the scheme will not change greatly due to the large difference in the force of different operators, and the feasibility of the detection data is higher.

[0011] Further, an end marker is arranged on the probe rod, and the end marker is located below the handle and has a gap with the bottom of the handle.

[0012] The beneficial effects of the scheme are that the end marker in the scheme can serve as a prompt marker of the maximum distance of the downward sliding of the handle relative to the probe rod, so that the same distance of the movement of the handle relative to the probe rod can be controlled without auxiliary operations such as ruler measurement when multiple detections are performed or different operators use it, so that the same length of the first spring is controlled to elongate or compress, and the force received by the probe rod is basically the same each time, which is more convenient.

[0013] Further, the interface disc is in sliding cooperation with the probe rod, and a limiting component for allowing the interface disc to slide in one direction along the probe rod is further arranged.

[0014] The beneficial effects of the scheme are that when the probe rod is inserted downward into the bottom mud, the interface disc can float on the top of the bottom mud because the contact surface of the interface disc with the bottom mud is larger, so that the relative sliding between the interface disc and the probe rod is formed. The limiting component in the scheme can limit the interface disc, so that the interface disc will not be reset downward relative to the probe rod when the probe instrument is taken out upward, so that the state of the probe rod inserted into the bottom mud does not need to be maintained. The depth of the probe rod inserted downward into the bottom mud can be determined according to the position of the interface disc after the probe instrument is taken out. In the case that the water depth is large, the shore is high, and there is a large height difference between the position of the operator and the bottom mud, it is more convenient to read the detection data.

[0015] Further, the limiting component includes a spring leaf and a gear rack, the gear rack is arranged on the probe rod and extends along the axial direction of the probe rod, and the spring leaf is fixed on the interface disc and can abut against the gear rack.

[0016] The beneficial effects of the scheme are that when the interface disc in the scheme slides upward relative to the probe rod, the spring leaf passes the teeth on the gear rack one by one, so that the sliding of the interface disc is not hindered. When the detection is completed and the probe instrument is taken out upward, the spring leaf abuts against the gear rack to limit the interface disc, so that the interface disc cannot slide downward relative to the probe rod.

[0017] Further, the elastic sheet comprises a hinged connecting portion and a limiting portion, the connecting portion is fixed to the interface disc, and a second spring for abutting the limiting portion against the rack is arranged between the connecting portion and the limiting portion.

[0018] The connecting portion in the scheme keeps abutting against the rack under the action of the second spring, when the detection ends and the interface disc needs to be reset, the second spring is deformed to make the elastic sheet separate from the rack, and the operation is simple.

[0019] Further, the elastic sheet is inverted V-shaped, and the part of the elastic sheet close to the rack can be elastically deformed.

[0020] The elastic sheet in the scheme can be elastically deformed, when the interface disc needs to be reset, the elastic sheet is deformed to make the elastic sheet separate from the rack, and the operation is simple.

[0021] Further, the probe rod is provided with scale lines in the axial direction.

[0022] The scheme has the beneficial effect that the depth of the probe rod inserted into the bottom mud can be directly read out without using a ruler and other auxiliary tools, and the operation is simpler.

[0023] Further, the end mark is a fixed ring, and the fixed ring is fixedly connected with the probe rod.

[0024] The scheme has the beneficial effect that the fixed ring can limit the maximum distance of the handle sliding downward relative to the probe rod, that is, the handle abuts against the fixed ring to indicate that the handle reaches the same sliding distance, and artificial judgment is not needed, so that judgment errors are avoided.

[0025] Further, the fixed ring is annular.

[0026] The scheme has the beneficial effect that the annular fixed ring has a larger contact area with the handle, and the handle can be better limited.

[0027] Further, the top of the probe rod is fixed with a spring fixing ring, the first spring is sleeved on the probe rod and the upper end of the first spring abuts against the spring fixing ring.

[0028] The scheme has the beneficial effect that the spring fixing ring can limit the first spring, facilitates the installation of the first spring and avoids the first spring from being taken out. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a perspective view of the probe rod and the interface disc in the utility model embodiment;

[0030] Figure 2 It is Figure 1 an enlarged view of A in the utility model embodiment;

[0031] Figure 3 It isFigure 1 a front view of the embodiment of the utility model;

[0032] Figure 4 is Figure 3 an enlarged view at B in the figure;

[0033] Figure 5 is a perspective view of the handle in the embodiment of the utility model;

[0034] Figure 6 is Figure 5 a front view of the embodiment of the utility model;

[0035] Figure 7 is Figure 1 a schematic diagram of the state after the interface disc slides upward in the embodiment. DETAILED DESCRIPTION

[0036] The following is further explained in detail through specific embodiments:

[0037] The reference signs in the drawings of the specification include: probe rod 1, rack 11, spring fixing ring 12, fixing ring 13, interface disc 2, elastic sheet 3, connecting part 31, limiting part 32, second spring 4, handle 5, first spring 6.

[0038] EMBODIMENT

[0039] Embodiment 1 is basically as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , a drill rod detector for detecting the thickness of plastic silt, comprising a probe rod 1 and a handle 5, the bottom of the probe rod 1 is provided with a pointed end, the lower part of the probe rod 1 is provided with an interface disc 2, the probe rod 1 penetrates the interface disc 2 along the vertical direction and a gap is provided between the interface disc 2 and the probe rod 1 to ensure that the interface disc 2 can slide along the axial direction of the probe rod 1. A scale line is provided on the probe rod 1 along the axial direction, and the zero scale of the scale line is located at the bottom of the probe rod 1.

[0040] A limiting assembly is arranged between the probe rod 1 and the interface disc 2, and the limiting assembly comprises a rack 11 and an elastic sheet 3. The rack 11 is welded on the probe rod 1 along the axial direction of the probe rod 1 and penetrates through the interface disc 2. The elastic sheet 3 in the embodiment comprises a connecting portion 31 and a limiting portion 32 which are arranged in an inverted V shape. The connecting portion 31 and the limiting portion 32 are hinged at the top portions thereof. The connecting portion 31 is vertically welded on the top portion of the interface disc 2, and the limiting portion 32 abuts against the teeth on the rack 11. A second spring 4 is arranged between the connecting portion 31 and the limiting portion 32. Specifically, the two ends of the second spring 4 are connected with the connecting portion 31 and the limiting portion 32 respectively, so as to swing the limiting portion 32 towards the side close to the rack 11. In actual implementation, the second spring 4 can also be a torsion spring. In this case, the torsion spring is installed at the hinged position of the connecting portion 31 and the limiting portion 32, and the two straight torsion arms of the torsion spring abut against the connecting portion 31 and the limiting portion 32 respectively. In actual implementation, the elastic sheet 3 can also be made of a material capable of elastic deformation, such as metal. In this case, the connecting portion 31 and the limiting portion 32 are integrally formed or arranged in a linear shape, so as to ensure that the limiting portion 32 can abut against the teeth on the rack 11 when the probe rod 1 is vertical, thereby limiting the interface disc 2 and enabling the interface disc 2 to move synchronously upwards with the probe rod 1.

[0041] A handle 5 is sleeved on the upper portion of the probe rod 1. The top portion of the probe rod 1 is provided with a spring fixing ring 12 in an interference fit. The upper portion of the probe rod 1 is sleeved with a first spring 6. The top portion and the bottom portion of the first spring 6 are connected with the spring fixing ring 12 and the handle 5 respectively, so as to enable the probe rod 1 to move downwards when the handle 5 is slid downwards.

[0042] An end marker is arranged on the probe rod 1. The end marker in the embodiment is a ring-shaped fixing ring 13 sleeved on the probe rod 1. When the first spring 6 is located above the handle 5, the fixing ring 13 is located below the handle 5 and has a gap with the bottom portion of the handle 5. Specifically, the length of the gap is determined according to the stiffness coefficient of the first spring 6, so as to ensure that the lower end of the probe rod 1 can be inserted into the flowing mud but cannot be inserted into the bottom mud below the flowing mud when the bottom portion of the handle 5 abuts against the fixing ring 13 during use of the drill rod detector.

[0043] In actual implementation, the spring fixing ring 12 can also be arranged below the handle 5. In this case, the first spring 6 is also arranged below the handle 5 and is compressed when the handle 5 moves downwards. The fixing ring 13 is sleeved on the outer periphery of the first spring 6 or is arranged on the inner periphery of the first spring 6. When the fixing ring 13 is sleeved on the outer periphery of the first spring 6, the fixing ring 13 is welded on the top portion of the spring fixing ring 12. When the fixing ring 13 is located on the inner side of the first spring 6, the fixing ring 13 is welded on the probe rod 1.

[0044] The specific implementation process is as follows:

[0045] When in use, the probe is vertically inserted into the water body, and the bottom of the probe rod 1 is abutted against the bottom mud. Then the operator holds the handle 5 and presses it downward, so that the handle 5 moves downward, and the handle 5 drives the probe rod 1 downward through the first spring 6, so that the probe rod 1 is inserted into the bottom mud. When the interface disc 2 is abutted against the bottom mud, the interface disc 2 is supported by the bottom mud and will not enter the bottom mud due to the large contact area between the interface disc 2 and the bottom mud.

[0046] When the probe rod 1 is inserted downward into the bottom mud, the rack 11 moves downward relative to the interface disc 2, and the teeth on the rack 11 push the limiting portion 32 of the elastic sheet 3 to swing counterclockwise, and when the teeth pass the limiting portion 32, the limiting portion 32 is reset under the action of the second spring 4 and is abutted against the rack 11 again.

[0047] When the bottom of the handle 5 is abutted against the fixing ring 13, it is proved that the end position is reached, and the pressing of the handle 5 downward is stopped. Then the probe is taken out of the bottom mud, and the interface disc 2 will not slide downward relative to the probe rod 1 under the action of the limiting portion 32, so that the length of the probe rod 1 below the interface disc 2 is the thickness of the flow mud in the bottom mud after the probe is taken out, and the length between the interface disc 2 and the lower end of the probe rod 1 can be directly read through the scale line on the probe rod 1.

[0048] When the detection needs to be performed again, the limiting portion 32 is manually extruded to the side away from the probe rod 1, so that the limiting portion 32 is separated from the rack 11, and the interface disc 2 will not be limited and can slide downward relative to the probe rod 1 to reset.

[0049] The above is only an embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A drill for detecting the thickness of a flowing plastic sediment, characterized in that: The probe rod is provided with an interface disc at its lower part, and the handle is sleeved on the probe rod and is in sliding fit with the probe rod, a first spring is arranged between the probe rod and the handle, and the two ends of the first spring are connected with the probe rod and the handle respectively.

2. A drill for detecting the thickness of a flowing plastic sediment according to claim 1, characterized in that: An end mark is arranged on the probe rod, and the end mark is located below the handle and has a gap with the bottom of the handle.

3. A drill for detecting the thickness of a flowing plastic sediment according to claim 2, characterized in that: The interface disc is in sliding fit with the probe rod, and a limiting assembly for allowing the interface disc to slide on the probe rod in one direction is further arranged.

4. A drill for detecting the thickness of a flowing plastic sediment according to claim 3, characterized in that: The limiting assembly comprises a spring sheet and a rack, the rack is arranged on the probe rod and extends along the axial direction of the probe rod, and the spring sheet is fixed on the interface disc and can abut against the rack.

5. The drill for detecting the thickness of a flowing plastic sediment according to claim 4, characterized in that: The spring sheet comprises a hinged connecting part and a limiting part, the connecting part is fixed on the interface disc, and a second spring for allowing the limiting part to abut against the rack is arranged between the connecting part and the limiting part.

6. The drill for detecting the thickness of a flowing plastic sediment according to claim 4, characterized in that: The spring sheet is in inverted V shape, and the part of the spring sheet close to the rack can be elastically deformed.

7. A drill probe for detecting the thickness of a flowing plastic sediment according to any one of claims 2 to 5, characterised in that: The probe rod is provided with scale lines distributed along the axial direction.

8. The drill for detecting the thickness of a flowing plastic sediment according to claim 2, characterized in that: The end mark is a fixed ring, and the fixed ring is fixedly connected with the probe rod.

9. The drill for detecting the thickness of a flowing plastic sediment according to claim 8, characterized in that: The fixed ring is annular.

10. The drill for detecting the thickness of a flowing plastic sediment according to claim 1, characterized in that: The top of the probe rod is fixed with a spring fixing ring, the first spring is sleeved on the probe rod, and the upper end of the first spring abuts against the spring fixing ring.

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