A ring knife sampling tool and method

Abstract

The present invention relates to a soil sampler for taking soil samples for testing in earthwork construction, and specifically to a ring knife sampling tool and method. The soil sampler comprises an inner barrel and a drill barrel of the soil sampler; the inner barrel of the soil sampler comprises a nail cap and a guide extension rod provided with an external thread; one end of the guide extension rod is threadedly connected to the inner side of the nail cap; soil sampling handles are threadedly connected to the opposite sides of the nail cap, and the connection line of the two soil sampling handles is perpendicular to the guide extension rod; the end of the guide extension rod is connected to a waste soil bin, and the other end of the waste soil bin away from the soil sampling handle is an opening and a ring knife is fixed at the opening; the drill barrel of the soil sampler comprises a drill barrel, and the inner diameter of the drill barrel is greater than the outer diameter of the waste soil bin and the ring knife; a drill barrel cover with a central opening is provided at one end of the drill barrel, and two relatively arranged drilling depth handles are connected to the position of the drill barrel cover on the side wall of the drill barrel, and the depth scale is engraved on the outside of the drill barrel. The present invention is widely used in earthwork engineering, and has the characteristics of reasonable structure, simple and reliable operation, fast speed, high efficiency and convenient carrying.

Description

Technical Field

[0001] The invention relates to a soil sampling device for taking soil samples for testing in earthwork construction, and in particular to a test ring knife sampling tool and method for compaction quality control in earthwork engineering. Background Art

[0002] With the continuous development of my country's economy and the continuous improvement of people's living standards, the improvement and construction of various infrastructure in my country is accelerating. Earthwork projects account for a large proportion of infrastructure construction. There are many ways to detect the compaction of earthwork projects, such as: nuclear density meter detection, non-nuclear density meter detection, water filling method detection, sand filling method detection, ring knife method detection, etc. At present, nuclear density meter detection and ring knife method detection are widely used in construction sites due to their simple operation and fast speed. Nuclear density meter detection requires special personnel qualifications. The workload of compaction detection in earthwork projects is very large. The self-inspection frequency of the compaction detection construction party is every 100~150m 3 A large earthwork project has hundreds of thousands to millions of inspection points, and the accuracy of the inspection data is directly related to the reliability of the entire project. This article discusses the ring knife method inspection.

[0003] The traditional ring knife method for sampling has the following characteristics and disadvantages:

[0004] 1. Strong professionalism. The sampling operation depends on the technical level and work quality of the test personnel. It is difficult for laymen to find sampling errors, and the human factor is relatively large.

[0005] 2. The ring knife soil sampling tools currently seen on construction sites are too simple. During the sampling process, a cover-shaped tool with an exhaust hole is pressed onto the ring knife and then hammered down with a hand hammer. The sampling tool has no waste soil bin. The soil sample is often squeezed out of the exhaust hole and disturbed by the cover-shaped tool, which has defects.

[0006] 3. The national standard SL260-2014 stipulates that the soil sampling depth is 1 / 3 of the height of the compacted layer. The sampling process requires the cooperation of other workers to dig out the upper 2 / 3 of the compacted layer and shovel it before sampling. After sampling, recovery is required, which wastes manpower and time costs. Summary of the invention

[0007] The present invention provides a ring knife sampling tool and method to solve the technical problems existing in the known technology; the present invention is widely used in earthwork engineering and has the characteristics of reasonable structure, simple and reliable operation, fast speed, high efficiency and easy carrying.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A ring knife sampling tool comprises a soil sampling device inner barrel and a soil sampling device drill barrel. The soil sampling device drill barrel and the soil sampling device inner barrel can be used in combination or separately. When the soil sampling device inner barrel is used alone, the ring knife soil sample on the surface of the foundation layer of the earthwork operation can be taken; when used in combination, the soil sampling device drill barrel can be set on the outside of the soil sampling device inner barrel;

[0010] The inner barrel of the soil sampler comprises a block-shaped nail cap and a long strip-shaped guide extension rod with an external thread; one end of the guide extension rod is threadedly connected to the inner side of the nail cap; soil sampling handles are threadedly connected to the opposite sides of the nail cap, and the connecting line of the two soil sampling handles is perpendicular to the guide extension rod; the end of the guide extension rod is connected to a waste soil bin, and the other end of the waste soil bin away from the soil sampling handle is open and a ring knife is fixed at the opening;

[0011] The soil extractor drill barrel includes a cylindrical drill barrel, the inner diameter of which is larger than the outer diameters of the waste soil bin and the ring cutter; a drill barrel cover with a central opening is provided at one end of the drill barrel, two relatively arranged drill depth handles are connected to the side wall of the drill barrel near the drill barrel cover, and a depth scale is engraved on the outside of the drill barrel for intuitive control of the drill depth.

[0012] Furthermore, the outer side of the guide extension rod is threadedly connected with two depth limiting nuts, and the outer diameter of the depth limiting nuts is larger than the diameter of the central opening of the drill barrel cover.

[0013] Furthermore, a waste soil bin cover is provided at one end of the waste soil bin near the soil sampling handle, a through hole is provided in the center of the waste soil bin cover, a guide extension rod extends to the inside of the waste soil bin through the through hole, and the connection between the guide extension rod and the waste soil bin is fixed by two inner and outer waste soil bin locking nuts.

[0014] Furthermore, the waste soil bin cover is provided with an exhaust hole at a position offset from the center.

[0015] Furthermore, the connection between the two drilling depth handles and the drill barrel is fixed by two sets of screws and nuts respectively.

[0016] Furthermore, the above-mentioned ring knife sampling tool performs ring knife sampling operation steps at a specific depth on the compacted layer, including:

[0017] S1. Select the sampling location and simply clean the surface soil;

[0018] S2. Use the drill barrel of the soil extractor to remove soil to a certain depth of the compacted layer thickness, and observe the scale on the surface of the drill barrel to control the drilling depth;

[0019] S3. Place the ring cutter and the inner bucket of the soil sampler into the soil sampling hole and press down or hit it with a rubber hammer to fill the ring cutter with soil sample;

[0020] S4. Remove the soil sampling handle, put the soil sampling device drill barrel outside the soil sampling device inner barrel into the soil sampling hole, turn the soil sampling device drill barrel left and right and press it down until the drill barrel touches the depth limit nut and feels resistance, then take out the ring knife soil sampling device, and take out the soil sampling device inner barrel and ring knife at the same time;

[0021] S5. Hold the handle and push the inner barrel to slowly push out the ring cutter. Pin the remaining soil on both ends of the ring cutter and put it into the ring cutter box. The ring cutter sample collection is completed.

[0022] Furthermore, the operation steps of the above-mentioned knife ring sampling tool for performing knife ring sampling on the surface of the foundation of earthwork operation include:

[0023] S1. Select the sampling location and simply clean the surface soil;

[0024] S2. Install the ring cutter on the inner barrel of the soil sampler and press it down at the selected position or hit it with a rubber hammer to fill the ring cutter with soil sample;

[0025] S3. Remove the soil sampling handle, put the soil sampling device drill barrel outside the soil sampling device inner barrel into the soil sampling hole, turn the soil sampling device drill barrel left and right and press it down until the drill barrel touches the depth limit nut and feels resistance, then take out the ring knife soil sampling device, and take out the soil sampling device inner barrel and ring knife at the same time;

[0026] S4. Hold the handle and push the inner barrel to slowly push out the ring cutter. Pin the remaining soil on both ends of the ring cutter and put it into the ring cutter box. The ring cutter sample is taken.

[0027] The advantages and positive effects of the present invention are:

[0028] 1. The model of the present invention has a simple structure and reliable performance. Most of the parts can be selected as standard parts, which are easy to purchase in the market. The product can be formed with a small investment. Stainless steel is recommended for the production and processing materials except the handle;

[0029] 2. Since the national standard ring cutters have various specifications, the products can be formed into various specifications by adjusting the diameter of the drill barrel and the waste soil bin.

[0030] 3. In the present invention, the operation does not require digging and leveling, and does not require the cooperation of other workers. One person can operate the ring knife sampling alone, which meets the sampling regulations of SL260-2014 standard for 1 / 3 of the compaction layer height, improves efficiency and saves costs;

[0031] 4. The waste soil bin has sufficient capacity to overcome the human factors of disturbing and squeezing soil samples during the sampling process of traditional ring knife sampling tools, reduce sampling errors, improve project reliability, and reduce losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a sectional view of the general assembly front view of the present invention;

[0033] Figure 2It is a top view of the general assembly of the present invention;

[0034] Figure 3 It is a front view and cross-sectional view of the drill barrel of the soil extractor of the present invention;

[0035] Figure 4 It is a front view of the inner barrel of the soil taking device of the present invention.

[0036] in:

[0037] 1. Inner barrel of soil sampler; 1-1. Nail cap; 1-2. Soil sampling handle; 1-3. Depth limiting nut; 1-4. Guide extension rod; 1-5. Locking nut of waste soil bin; 1-6. Waste soil bin cover; 1-7. Waste soil bin; 1-8. Ring knife; 2. Drill barrel of soil sampler; 2-1. Drill depth handle; 2-2. Drill barrel cover; 2-3. Drill barrel. DETAILED DESCRIPTION

[0038] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-4As shown, the present invention provides a ring knife sampling tool, comprising a soil sampler inner barrel 1 and a soil sampler drill barrel 2. The soil sampler drill barrel 2 and the soil sampler inner barrel 1 can be used in combination or separately; the soil sampler inner barrel 1 can be used to take soil samples of the ring knife 1-8 on the surface of the foundation layer of earthwork operations when used separately; when used in combination, the soil sampler drill barrel 2 can be sleeved on the outer side of the soil sampler inner barrel 1; specifically, the soil sampler inner barrel 1 comprises a block nail cap 1-1 and a long strip guide extension rod 1-4 with an external thread; one end of the guide extension rod 1-4 is threadedly connected to the inner side of the nail cap 1-1; soil sampling handles 1-2 are threadedly connected to the opposite sides of the nail cap 1-1, and the connecting line of the two soil sampling handles 1-2 is perpendicular to the guide extension rod 1-4; the outer side of the guide extension rod 1-4 is threadedly connected to two depth limiting nuts 1-3; the end of the guide extension rod 1-4 is connected to the outer side of the guide extension rod 1-4. A waste soil bin 1-7 is connected, and a waste soil bin cover 1-6 is provided at one end of the waste soil bin 1-7 axially close to the soil sampling handle 1-2, and a through hole is provided in the center of the waste soil bin cover 1-6, through which a guide extension rod 1-4 extends to the inner side of the waste soil bin 1-7, and the connection between the guide extension rod 1-4 and the waste soil bin 1-7 is fixed by two inner and outer waste soil bin 1-7 locking nuts 1-5; the soil sampling handle 1-2, the guide extension rod 1-4 and the waste soil bin 1-7 can be disassembled and adjusted at any time for easy operation; the other end of the waste soil bin 1-7 away from the soil sampling handle 1-2 is an opening and a ring knife 1-8 is fixed at the opening; it is well known that the ring knife 1-8 is a commonly used instrument for taking samples of original soil (undisturbed) tests, mainly used to measure the compaction of the soil body, and the blade should be downward when in use to avoid skewing when cutting the soil sample so that it can be cut vertically and evenly under force.

[0040] The soil extractor drill barrel 2 comprises a cylindrical drill barrel body 2-3, the inner diameter of which is larger than the outer diameters of the waste soil bin 1-7 and the ring cutter 1-8; a drill barrel cover 2-2 with a central opening is provided at one end of the drill barrel body 2-3, and two oppositely arranged drill depth handle barrels 2-1 are connected to the side wall of the drill barrel body 2-3 near the drill barrel cover 2-2, and the two drill depth handle barrels 2-1 are fixed to the drill barrel body 2-3 at the connection points by two sets of screws and nuts respectively; in this way, the drill depth handle barrel 2-1 and the drill barrel body 2-3 can be disassembled and assembled at any time for easy carrying; the outside of the drill barrel body 2-3 is engraved with depth scales for easy intuitive control of the drilling depth; the outer diameter of the depth limiting nut 1-3 is larger than the diameter of the central opening of the drill barrel cover 2-2, and the drill barrel body 2-3 will encounter resistance when it deeply contacts the depth limiting nut 1-3, which is to limit the final drilling depth of the soil extractor drill barrel 2 so as to smoothly remove the ring cutter 1-8 soil sample.

[0041] The soil sampler drill barrel 2 and the soil sampler inner barrel 1 can be used in combination or separately; the soil sampler inner barrel 1 can be used alone to obtain the soil samples of the ring cutters 1-8 on the surface of the foundation layer of the earthwork operation; when used in combination, it is suitable for obtaining soil samples of the ring cutters 1-8 at a certain depth, such as the provisions of the water conservancy specification SL260-2014 requiring the soil sample to be obtained at 1 / 3 of the height of the compacted layer of earthwork filling. First, the soil sampler drill barrel 2 is used to remove the upper 2 / 3 of the compacted layer, and then the soil sampler inner barrel 1 is used to obtain the soil samples of the ring cutters 1-8, and finally the soil sampler drill barrel 2 is used to cover the outer surface of the soil sampler inner barrel 1 to continue drilling to remove the soil contained in the soil sampler inner barrel 1 and the ring cutters 1-8, and even a layer of soil samples of the ring cutters 1-8 can be obtained;

[0042] Specifically, when the soil extractor drill barrel 2 and the soil extractor inner barrel 1 are combined, the usage method is different according to different usage purposes.

[0043] Example 1

[0044] The ring knife sampling tool performs ring knife sampling of a specific depth on the compacted layer. The following are the steps:

[0045] 1) Select the sampling location and simply clean the surface soil;

[0046] 2) Use the soil extractor drill barrel 2 to remove soil of a certain depth (such as the upper 2 / 3) of the compacted layer thickness, and observe the scale on the surface of the drill barrel body 2-3 to control the drilling depth;

[0047] 3) Place the ring cutter 1-8 and the inner bucket 1 of the soil sampler into the soil sampling hole and press down or hit it with a rubber hammer to fill the ring cutter 1-8 with soil samples;

[0048] 4) Remove the soil sampling handle 1-2, put the soil sampling device drill barrel 2 on the outside of the soil sampling device inner barrel 1 and put it into the soil sampling hole, turn the soil sampling device drill barrel 2 left and right and press it down until the drill barrel body 2-3 contacts the depth limit nut 1-3 and feels resistance, then pull out the soil sampling device drill barrel 2, and at the same time take out the soil sampling device inner barrel 1 and the ring knife 1-8;

[0049] 5) Hold the handle and push the inner barrel to slowly push out the ring cutter 1-8, pin the remaining soil on both ends of the ring cutter and put it into the ring cutter box, and the ring cutter sample is taken.

[0050] Example 2

[0051] The operation steps of the ring knife sampling tool for the surface ring knife sampling of earthwork foundation are as follows:

[0052] 1) Select the sampling location and simply clean the surface soil;

[0053] 2) Install the ring cutter 1-8 on the inner barrel 1 of the soil sampler and press it down at the selected position or hit it with a rubber hammer to fill the ring cutter 1-8 with soil sample;

[0054] 3) Remove the soil sampling handle 1-2, put the soil sampling device drill barrel 2 on the outside of the soil sampling device inner barrel 1 and put it into the soil sampling hole, turn the soil sampling device drill barrel 2 left and right and press it down until the drill barrel body 2-3 contacts the depth limit nut 1-3 and feels resistance, then pull out the soil sampling device drill barrel 2, and at the same time take out the soil sampling device inner barrel 1 and the ring knife 1-8;

[0055] 4) Hold the handle and push the inner barrel to slowly push out the ring cutter 1-8, pin the remaining soil on both ends of the ring cutter 1-8 into the ring cutter box, and the ring cutter sample is taken.

[0056] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for using a ring knife sampling tool, characterized in that: The ring knife sampling tool comprises two parts, namely, the soil sampling inner barrel and the soil sampling drill barrel. The soil sampling drill barrel and the soil sampling inner barrel can be used in combination or separately. When the soil sampling inner barrel is used alone, the ring knife soil sample on the surface of the foundation layer of the earthwork operation can be taken; when used in combination, the soil sampling drill barrel can be set on the outside of the soil sampling inner barrel; The inner barrel of the soil sampler comprises a block-shaped nail cap and a long strip-shaped guide extension rod with an external thread; one end of the guide extension rod is threadedly connected to the inner side of the nail cap; soil sampling handles are threadedly connected to the opposite sides of the nail cap, and the connecting line of the two soil sampling handles is perpendicular to the guide extension rod; the end of the guide extension rod is connected to a waste soil bin, and the other end of the waste soil bin away from the soil sampling handle is open and a ring knife is fixed at the opening; The soil extractor drill barrel comprises a cylindrical drill barrel, the inner diameter of which is larger than the outer diameters of the waste soil bin and the ring cutter; a drill barrel cover with a central opening is provided at one end of the drill barrel, two drill depth handles arranged opposite to each other are connected to the side wall of the drill barrel near the drill barrel cover, and a depth scale is engraved on the outside of the drill barrel for intuitive control of the drill depth; The outer side of the guide extension rod is threadedly connected to two depth limiting nuts, and the outer diameter of the depth limiting nuts is larger than the diameter of the central opening of the drill barrel cover; The waste soil bin is provided with a waste soil bin cover at one end close to the soil sampling handle, a through hole is provided in the center of the waste soil bin cover, the guide extension rod extends to the inside of the waste soil bin through the through hole, and the connection between the guide extension rod and the waste soil bin is fixed by two inner and outer waste soil bin locking nuts; The steps for knife ring sampling at a specific depth of the compacted layer are as follows: S1. Select the sampling location and simply clean the surface soil; S2. Use the drill barrel of the soil extractor to remove soil to a certain depth of the compacted layer thickness, and observe the scale on the surface of the drill barrel to control the drilling depth; S3. Place the ring cutter and the inner bucket of the soil sampler into the soil sampling hole and press down or hit it with a rubber hammer to fill the ring cutter with soil sample; S4. Remove the soil sampling handle, put the soil sampling device drill barrel outside the soil sampling device inner barrel into the soil sampling hole, turn the soil sampling device drill barrel left and right and press it down until the drill barrel touches the depth limit nut and feels resistance, then take out the ring knife soil sampling device, and take out the soil sampling device inner barrel and ring knife at the same time; S5. Hold the handle and push the inner barrel to slowly push out the ring cutter. Pin the remaining soil on both ends of the ring cutter and put it into the ring cutter box. The ring cutter sample collection is completed.

2. The method for using the ring knife sampling tool according to claim 1, characterized in that: The waste soil bin cover is provided with an exhaust hole at a position offset from the center.

3. The method for using the ring knife sampling tool according to claim 1, characterized in that: The connection points between the two drilling depth handles and the drill barrel are fixed by two sets of screws and nuts respectively.

4. The method for using the ring knife sampling tool according to any one of claims 1 to 3, characterized in that: The operating steps for cutting ring sampling of the surface layer of the earthwork foundation are as follows: S1. Select the sampling location and simply clean the surface soil; S2. Install the ring cutter on the inner barrel of the soil sampler and press it down at the selected position or hit it with a rubber hammer to fill the ring cutter with soil sample; S3. Remove the soil sampling handle, put the soil sampling device drill barrel outside the soil sampling device inner barrel into the soil sampling hole, turn the soil sampling device drill barrel left and right and press it down until the drill barrel touches the depth limit nut and feels resistance, then take out the ring knife soil sampling device, and take out the soil sampling device inner barrel and ring knife at the same time; S4. Hold the handle and push the inner barrel to slowly push out the ring cutter. Pin the remaining soil on both ends of the ring cutter and put it into the ring cutter box. The ring cutter sample is taken.

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