A geosynthetics sample preparation device

Abstract

The utility model belongs to the field of geotechnical material sample preparation, and specifically relates to a geosynthetic material sample preparation device, which comprises: an outer frame, an inner frame and a cutting knife, wherein the outer frame is sleeved on the outside of the inner frame, an accommodating space is formed between the outer frame and the inner frame, the lower ends of both sides of the outer frame extend outwards to form outer pressure feet, the lower ends of both sides of the inner frame extend inwards to form inner pressure feet, a cutting opening is formed between the outer pressure feet and the inner pressure feet adjacent thereto, and both the outer pressure feet and the inner pressure feet are pressed on the geosynthetic material; the cutting knife is arranged in the accommodating space so as to move up and down, and the lower end of the cutting knife extends out of the cutting opening to cut the geosynthetic material. The utility model adopts a cutting knife that moves up and down in the outer frame and the inner frame to cut the sample, and cooperates with the design of the inner pressure feet and the outer pressure feet, so that the sample preparation device can be stabilized and the geosynthetic material sample can be fixed, and the sample can be cut at one time to avoid stretching the geosynthetic material sample during cutting.

Description

Technical Field

[0001] The utility model belongs to the field of geotechnical material sample preparation, and in particular relates to a geosynthetic material sample preparation device. Background Art

[0002] Geosynthetics are a kind of artificial synthetic materials widely used in the field of civil engineering. Geosynthetics refer to new materials used in civil engineering, water conservancy engineering and environmental engineering formed by processing synthetic resins, fibers and inorganic materials. They mainly include geomembranes, geonets, geotextiles, etc. This type of material plays an important role in many projects. Geosynthetics are widely used in roadbed reinforcement, geotechnical retaining walls, drainage systems, foundation treatment, reservoir anti-seepage, canal lining, cofferdam reinforcement, landfills, wastewater treatment plants and other fields because of their tensile strength, anti-seepage, soil filtration and other functions.

[0003] In order to ensure the performance and quality of geosynthetics in engineering, standardized tests and inspections must be carried out on them, and sample preparation is a key link in this process. Reasonable sample preparation can ensure the representativeness of the sample, thereby obtaining reliable test results. Generally speaking, the sample preparation process of geosynthetics includes the following steps: sampling, sample preparation, sample identification, sample preservation, and pre-test treatment. Among them, sample preparation is the primary link in the test and has a significant impact on the subsequent test results. Efficient and qualified sample preparation is a necessary guarantee for the smooth progress of subsequent tests.

[0004] At present, the main method used is manual cutting with scissors. However, the test samples require high precision, and manual cutting often cannot meet the precision requirements. Manual sampling is generally difficult to form in one go and requires multiple, repeated trimming of the sample. Long-term squeezing of the sample may affect the test results. Moreover, manual sampling is inefficient. Utility Model Content

[0005] In view of this, in order to solve the problems existing in the prior art, the purpose of the utility model is to provide a geosynthetics sample preparation device, which can cut out samples that meet the accuracy requirements in one go, which is simple and efficient.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A geosynthetics sample preparation device, used for cutting geosynthetics, characterized in that it comprises: an outer frame, an inner frame and a cutting knife, wherein the outer frame is sleeved on the outside of the inner frame, an accommodating space is formed between the outer frame and the inner frame, the lower ends of both sides of the outer frame extend outwards to form outer pressure feet, the lower ends of both sides of the inner frame extend inwards to form inner pressure feet, a cutting opening is formed between the outer pressure foot and the inner pressure foot adjacent thereto, and the outer pressure foot and the inner pressure foot are both pressed on the geosynthetics;

[0008] The cutting knife is disposed in the accommodating space so as to be movable up and down, and the lower end of the cutting knife extends out of the cutting opening to cut the geosynthetics.

[0009] The specific technical effect is: an integrated design in which an outer frame is sleeved on the outside of an inner frame is adopted, which makes it easy to install a cutting knife, has a simple structure, and is convenient for cutting samples.

[0010] Furthermore, the cutting knife comprises a pressing handle and a blade foot, the upper end of the blade foot is connected to the pressing handle, and the blade foot is arranged opposite to the cutting opening.

[0011] The specific technical effect is: pressing down the pressing handle drives the blade foot to move downward, and the blade foot extends out of the cutting opening to cut the geosynthetics.

[0012] Furthermore, the pressing handle includes a first cross bar, a second cross bar, a third cross bar and a vertical connecting rod, the two ends of the vertical connecting rod are respectively connected to the first cross bar and the third cross bar, the second cross bar is connected to the middle part of the vertical connecting rod, the second cross bar is arranged in the moving channel, the upper end of the blade foot is connected to the second cross bar, the first cross bar is operably clamped against the upper end surface of the outer frame, the vertical connecting rod passes through the outer frame and the inner frame in sequence, and the third cross bar is operably clamped against the lower end surface of the middle part of the inner frame.

[0013] The specific technical effect is that the design of the first cross bar and the third cross bar can limit the downward pressure handle.

[0014] Furthermore, a reset groove is provided at the lower end of the middle portion of the inner frame, a spring is provided in the reset groove, and the third cross bar extends into the reset groove and is connected to the upper end of the spring.

[0015] The specific technical effect is: a spring is arranged in the reset groove, so that the cutting knife can be reset, so that the cutting knife moves to the top of the sample after cutting is completed, making it easy to take the cut sample.

[0016] Furthermore, a first guide hole is opened in the middle of the outer frame, and a second guide hole is opened in the middle of the inner frame. The first guide hole and the second guide hole are through-connected, and the first guide hole and the second guide hole are both connected to the accommodating space. The lower end of the second guide hole is connected to the reset groove, and the vertical connecting rod passes through the first guide hole and the second guide hole in sequence.

[0017] The specific technical effect is: the first guide hole and the second guide hole play a guiding role, ensuring that the cutting knife can evenly cut the sample when moving downward, and ensuring that the specifications of the cut sample meet the accuracy requirements of the test.

[0018] Furthermore, the lower ends of the blade feet are formed with cutting bevels.

[0019] The specific technical effect is: using a blade foot with fixed specifications that meets the requirements of the testing specifications, the sample can be cut in one go, which is simple and efficient.

[0020] Furthermore, the outer frame includes an outer vertical portion, the outer presser foot is arranged at the lower end of the outer vertical portion, the inner frame includes an inner vertical portion, the inner presser foot is arranged at the lower end of the inner vertical portion, a cutting channel is formed between the outer vertical portion and the inner vertical portion, a cutting opening is formed at the bottom of the cutting channel, and the blade foot is arranged in the cutting channel so as to move up and down.

[0021] The specific technical effect is: by adopting the design of the vertical part, the blade foot can move vertically to cut the sample, thereby ensuring the accuracy of the sample.

[0022] Furthermore, the outer frame also includes an outer horizontal part, the upper end of the outer vertical part is connected to the outer horizontal part, the inner frame also includes an inner horizontal part, the upper end of the inner vertical part is connected to the inner horizontal part, a movable channel is formed between the outer horizontal part and the inner horizontal part, the upper end of the cutting channel is connected to the movable channel, and the middle part of the pressing handle is arranged in the movable channel so as to move up and down.

[0023] Furthermore, it also includes: a heating device, which is connected to the cutting knife.

[0024] The specific technical effect is that the heating device can preheat the cutting knife to a specified temperature for cutting geosynthetics that require thermal cutting.

[0025] The beneficial effects of the utility model are:

[0026] A cutting knife that meets the requirements of the testing specifications is used to move up and down in the outer frame and the inner frame to cut the sample. The sample can be cut in one go, which is simple and efficient. The design of the inner and outer pressure feet can not only stabilize the sample preparation device, but also fix the geosynthetics sample to avoid stretching the geosynthetics sample during cutting, which would affect the accuracy of the test sample.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0030] Figure 2 yes Figure 1 The schematic diagram of the structure of the perspective pointed by the arrow;

[0031] Figure 3 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0032] In the figure:

[0033] 1. Geosynthetics; 2. External frame; 3. Internal frame; 4. Cutting knife; 5. Accommodating space; 6. External presser foot; 7. Internal presser foot; 8. Cutting opening; 9. Press-down handle; 12. Reset groove; 13. Spring; 14. First guide hole; 15. Second guide hole; 16. Blade foot; 17. Cutting slope; 18. External vertical part; 19. Internal vertical part; 20. Cutting channel; 21. External horizontal part; 22. Internal horizontal part; 23. Moving channel; 24. First cross bar; 25. Second cross bar; 26. Third cross bar; 27. Vertical connecting rod; 28. Heating device. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1:

[0036] See also Figure 1 As shown, a geosynthetics sample preparation device is used for cutting geosynthetics 1, which includes: an outer frame 2, an inner frame 3 and a cutting knife 4, the outer frame 2 is sleeved on the outside of the inner frame 3, an accommodating space 5 is formed between the outer frame 2 and the inner frame 3, the lower ends of both sides of the outer frame 2 extend outwards to form outer pressure feet 6, the lower ends of both sides of the inner frame 3 extend inwards to form inner pressure feet 7, a cutting opening 8 is formed between the outer pressure foot 6 and the inner pressure foot 7 adjacent thereto, and both the outer pressure foot 6 and the inner pressure foot 7 are pressed on the geosynthetics 1;

[0037] The cutting knife 4 is movably disposed in the accommodating space 5 , and the lower end of the cutting knife 4 extends out of the cutting opening 8 to cut the geosynthetics 1 .

[0038] It should be noted here that the lower end surface of the inner presser foot 7 and the lower end of the outer presser foot 6 are located in the same plane, and the outer frame 2 is sleeved on the outside of the inner frame 3 in an integrated design, which is convenient for installing the cutting knife 4, has a simple structure, and is easy to operate for cutting samples.

[0039] The cutting knife 4 includes a pressing handle 9 and a blade foot 16. The upper end of the blade foot 16 is connected to the pressing handle 9. The blade foot 16 is arranged opposite to the cutting opening. Pressing the pressing handle 9 downward drives the blade foot 16 to move downward, and the blade foot 16 extends out of the cutting opening 8 to cut the geosynthetics 1.

[0040] The pressing handle 9 includes a first cross bar 24, a second cross bar 25, a third cross bar 26 and a vertical connecting rod 27. The two ends of the vertical connecting rod 27 are respectively connected to the first cross bar 24 and the third cross bar 26. The second cross bar 25 is connected to the middle part of the vertical connecting rod 27. The second cross bar 25 is arranged in the moving channel 23. The upper end of the blade foot 16 is connected to the second cross bar 25. The first cross bar 24 is operably clamped on the upper end surface of the outer frame 2. The vertical connecting rod 27 passes through the outer frame 2 and the inner frame 3 in sequence. The third cross bar 26 is operably clamped on the lower end surface of the middle part of the inner frame 3.

[0041] It should be noted here that the outer contour of the first cross bar 24 must be larger than the diameter of the first guide hole 14, and the outer contour of the third cross bar 26 must be larger than the diameter of the second guide hole 15. The design of the first cross bar 24 and the third cross bar 26 can limit the downward pressure handle 9.

[0042] The middle part of the outer frame 2 protrudes upward to form an outer boss portion, the upper end of the pressing handle 9 passes through the outer boss portion, and the first cross bar 24 is operably clamped against the upper end surface of the outer boss portion; the middle part of the inner frame 3 protrudes downward to form an inner boss portion, and the third cross bar 26 extends into the inner boss portion, and the third cross bar 26 is operably clamped against the upper end surface inside the inner boss portion.

[0043] A reset groove 12 is disposed at the lower end of the middle portion of the inner frame 3 , a spring 13 is disposed in the reset groove 12 , and the third cross bar 26 extends into the reset groove 12 and is connected to the upper end of the spring 13 .

[0044] It should be noted here that the reset groove 12 is opened in the inner boss portion, and a spring 13 is arranged in the reset groove 12 to reset the cutting knife 4, so that the cutting knife 4 moves to the top of the sample after cutting is completed, which is convenient for taking the cut sample.

[0045] A first guide hole 14 is opened in the middle of the outer frame 2, and a second guide hole 15 is opened in the middle of the inner frame 3. The first guide hole 14 and the second guide hole 15 are set through, and the first guide hole 14 and the second guide hole 15 are both connected to the accommodating space 5. The lower end of the second guide hole 15 is connected to the reset groove 12, and the vertical connecting rod 27 passes through the first guide hole 14 and the second guide hole 15 in sequence.

[0046] It should be noted here that: the first guide hole 14 passes through from the outer boss part to the accommodating space 5, and the two ends of the second guide hole 15 are respectively connected to the reset groove 12 and the accommodating space 5, so that the pressing handle 9 can extend from the outer boss part into the reset groove 12. The first guide hole 14 and the second guide hole 15 play a guiding role to ensure that the cutting knife 4 can evenly cut the sample when moving downward, and ensure that the specifications of the cut sample meet the accuracy requirements of the test.

[0047] A cutting slope 17 is formed at the lower end of the blade foot 16 .

[0048] It should be noted here that: by using a blade foot 16 of fixed specifications that meets the requirements of the testing specifications, the sample can be cut at one time, which is simple and efficient.

[0049] The outer frame 2 includes an outer vertical portion 18, and the outer presser foot 6 is arranged at the lower end of the outer vertical portion 18. The inner frame 3 includes an inner vertical portion 19, and the inner presser foot 7 is arranged at the lower end of the inner vertical portion 19. A cutting channel 20 is formed between the outer vertical portion 18 and the inner vertical portion 19, and a cutting opening 8 is formed at the bottom of the cutting channel 20. The blade foot 16 is arranged in the cutting channel 20 so as to move up and down.

[0050] It should be noted that the outer vertical portion 18 is sleeved on the outer portion of the inner vertical portion 19, see Figure 2 As shown, the inner pressure foot 7, the outer pressure foot 6 and the blade foot 16 are all arranged in a "mouth"-shaped structure. The blade foot 16 performs circular cutting on the geosynthetics 1. By adopting the design of the vertical part, the blade foot 16 can move vertically to cut the sample to ensure the sample accuracy.

[0051] The outer frame 2 also includes an outer horizontal portion 21, and the upper end of the outer vertical portion 18 is connected to the outer horizontal portion 21. The inner frame 3 also includes an inner horizontal portion 22, and the upper end of the inner vertical portion 19 is connected to the inner horizontal portion 22. A movable channel 23 is formed between the outer horizontal portion 21 and the inner horizontal portion 22. The upper end of the cutting channel 20 is connected to the movable channel 23, and the middle part of the pressing handle 9 is arranged in the movable channel 23 so as to move up and down.

[0052] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0053] The utility model also has the following implementation methods based on the above:

[0054] Embodiment 2:

[0055] See also Figure 3 As shown, the difference from Example 1 is that the present invention further includes a heating device 28 , and the heating device 28 is connected to the cutting knife 4 .

[0056] It should be noted that the heating device 28 includes a heating component and a temperature control component. The heating device 28 can preheat the cutting blade 4 to a specified temperature for cutting the geosynthetics 1 that need to be thermally cut.

[0057] The specific working process of the utility model is as follows:

[0058] When it is necessary to prepare a sample of the geosynthetic material 1, first select a suitable geosynthetic material 1, such as a geomembrane or a geotextile, and lay the geosynthetic material 1 flat; place the sample preparation device of the utility model on the laid-flat geosynthetic material 1, lay the inner presser foot 7 and the outer presser foot 6 flat, so that the lower end surface of the inner presser foot 7 and the lower end surface of the outer presser foot 6 are pressed on the geosynthetic material 1; press the pressing handle 9 downward, and the pressing handle 9 is forced to move downward, thereby driving the two-edged feet 16 to move downward. At this time, the spring 13 is under force and is in a compressed state; the blade feet 16 extend out of the cutting opening 8 to cut the geosynthetics 1, and the distance between the blade feet 16 is equal to the specification of the cut sample; the pressing handle 9 is released, the pressure on the spring 13 disappears, and the pressing handle 9 is reset under the elastic force of the spring 13, thereby driving the blade feet 16 to move upward, and the blade feet 16 retract into the cutting channel 20; the sample preparation device of the utility model is removed from the geosynthetics 1, and finally the cut sample is obtained.

[0059] When it is necessary to prepare a sample of the geosynthetics 1 that needs to be thermally cut, the heating device 28 is connected to the cutting knife 4, and then the above-mentioned working process is repeated to obtain the sample that needs to be thermally cut.

[0060] In summary, the beneficial effects of the utility model are:

[0061] A cutting knife 4 that meets the requirements of the testing specifications is moved up and down in the outer frame 2 and the inner frame 3 to cut the sample. The sample can be cut at one time, which is simple and efficient. Combined with the design of the inner pressure foot 7 and the outer pressure foot 6, it can not only stabilize the sample preparation device, but also fix the geosynthetics 1 sample, thereby avoiding stretching of the geosynthetics 1 sample during cutting and affecting the accuracy of the test sample.

[0062] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0063] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0065] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A geosynthetics sample preparation device for cutting geosynthetics (1), characterized in that: include: An outer frame (2), an inner frame (3) and a cutting knife (4), wherein the outer frame (2) is sleeved on the outside of the inner frame (3), an accommodating space (5) is formed between the outer frame (2) and the inner frame (3), the lower ends of both sides of the outer frame (2) extend outwards to form outer pressure feet (6), the lower ends of both sides of the inner frame (3) extend inwards to form inner pressure feet (7), a cutting opening (8) is formed between the outer pressure foot (6) and the inner pressure foot (7) adjacent thereto, and the outer pressure foot (6) and the inner pressure foot (7) are both pressed on the geosynthetics (1); The cutting knife (4) is arranged in the accommodating space (5) so as to be movable up and down, and the lower end of the cutting knife (4) extends out of the cutting opening (8) to cut the geosynthetics (1).

2. A geosynthetics sample preparation device as claimed in claim 1, characterized in that: The cutting knife (4) comprises a pressing handle (9) and a blade foot (16), wherein the upper end of the blade foot (16) is connected to the pressing handle (9), and the blade foot (16) is arranged opposite to the cutting opening (8). Pressing down the pressing handle (9) drives the blade foot (16) to move downward, and the blade foot (16) extends out of the cutting opening (8) to cut the geosynthetics (1).

3. A geosynthetics sample preparation device as claimed in claim 2, characterized in that: The pressing handle (9) comprises a first cross bar (24), a second cross bar (25), a third cross bar (26) and a vertical connecting rod (27); the two ends of the vertical connecting rod (27) are respectively connected to the first cross bar (24) and the third cross bar (26); the second cross bar (25) is connected to the middle part of the vertical connecting rod (27); the second cross bar (25) is arranged in the moving channel (23); the upper end of the blade foot (16) is connected to the second cross bar (25); the first cross bar (24) is operably clamped against the upper end surface of the outer frame (2); the vertical connecting rod (27) passes through the outer frame (2) and the inner frame (3) in sequence; and the third cross bar (26) is operably clamped against the lower end surface of the middle part of the inner frame (3).

4. A geosynthetics sample preparation device as claimed in claim 3, characterized in that: A reset groove (12) is provided at the lower end of the middle part of the inner frame (3), a spring (13) is provided in the reset groove (12), and the third cross bar (26) extends into the reset groove (12) and is connected to the upper end of the spring (13).

5. A geosynthetics sample preparation device as claimed in claim 4, characterized in that: A first guide hole (14) is provided in the middle of the outer frame (2), and a second guide hole (15) is provided in the middle of the inner frame (3). The first guide hole (14) and the second guide hole (15) are connected through each other. The first guide hole (14) and the second guide hole (15) are both connected to the accommodating space (5). The lower end of the second guide hole (15) is connected to the reset groove (12). The vertical connecting rod (27) passes through the first guide hole (14) and the second guide hole (15) in sequence.

6. A geosynthetics sample preparation device as claimed in claim 2, characterized in that: A cutting bevel (17) is formed at the lower end of the blade foot (16).

7. A geosynthetics sample preparation device as claimed in claim 2, characterized in that: The outer frame (2) comprises an outer vertical portion (18), the outer presser foot (6) is arranged at the lower end of the outer vertical portion (18), the inner frame (3) comprises an inner vertical portion (19), the inner presser foot (7) is arranged at the lower end of the inner vertical portion (19), a cutting channel (20) is formed between the outer vertical portion (18) and the inner vertical portion (19), a cutting opening (8) is formed at the bottom of the cutting channel (20), and the blade foot (16) is arranged in the cutting channel (20) so as to move up and down.

8. A geosynthetics sample preparation device as claimed in claim 7, characterized in that: The outer frame (2) further comprises an outer horizontal portion (21), the upper end of the outer vertical portion (18) being connected to the outer horizontal portion (21), the inner frame (3) further comprises an inner horizontal portion (22), the upper end of the inner vertical portion (19) being connected to the inner horizontal portion (22), a movable channel (23) being formed between the outer horizontal portion (21) and the inner horizontal portion (22), the upper end of the cutting channel (20) being connected to the movable channel (23), and the middle portion of the pressing handle (9) being arranged in the movable channel (23) so as to be movable up and down.

9. A geosynthetics sample preparation device as claimed in claim 1, characterized in that: Also includes: A heating device (28), wherein the heating device (28) is connected to the cutting knife (4).

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