Direct shear tester for coarse-grained soil

Abstract

The utility model relates to the technical field of coarse-grained soil shearing tests, in particular to a coarse-grained soil direct shearing tester which comprises a pressing assembly, a shearing assembly and a transverse moving assembly, the pressing assembly comprises a support, a first telescopic driving part, a pressing plate, an upper shearing box and a lower shearing box, and the first telescopic driving part is installed on the support; the shearing assembly comprises a second telescopic driving part and a second protruding part, the transverse moving assembly comprises guide rails, sliding blocks, a supporting plate, angle plates, adjusting screws and a positioning shaft, the multiple guide rails are installed on the support, the multiple sliding blocks are connected to the guide rails in a sliding mode, the sliding blocks are connected with the supporting plate, the multiple angle plates are connected to the lower shearing box, the angle plates are in an L-shaped plate shape, and the adjusting screws are installed on the angle plates. One end of the adjusting screw is in contact with the supporting plate, the supporting plate is connected with a plurality of positioning shafts, and the positioning shafts penetrate through the side wall, provided with the adjusting screw, of the angle plate.

Description

Technical Field

[0001] The utility model relates to the technical field of coarse-grained soil shearing test, in particular to a coarse-grained soil direct shearing tester. Background Art

[0002] The coarse-grained soil shear tester is a device used to measure the shear strength characteristics of coarse-grained soil (such as large-grained soil or rock). The tester usually complies with the DL / T5356-2006 test procedure for coarse-grained soil in hydropower and water conservancy projects, and adopts the stress-controlled flat push method. The existing direct shear method uses a fixed frame method, which is inconvenient to take and place the sample during the test, affecting the installation efficiency of the sample. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a coarse-grained soil direct shear tester, which is convenient for conducting tests and for users to disassemble and assemble samples, thereby improving the performance of installed samples.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coarse-grained soil direct shear tester, comprising a material pressing component, a shearing component and a lateral movement component;

[0007] The material pressing assembly comprises a bracket, a telescopic driving part 1, a pressing plate, an upper shear box and a lower shear box, the telescopic driving part 1 is mounted on the bracket, the output shaft of the telescopic driving part 1 is connected to the pressing plate, the upper shear box and the lower shear box are in communication, and the upper shear box and the pressing plate are arranged opposite to each other;

[0008] The shearing assembly includes a second telescopic driving part and a second protrusion, the second telescopic driving part is mounted on the bracket, the output shaft of the second telescopic driving part is connected to the pressure sensor, the outer wall of the lower shearing box is provided with a second protrusion, and the input end of the pressure sensor is in contact with the second protrusion;

[0009] The transverse movement assembly includes guide rails, sliders, support plates, angle plates, adjusting screws and positioning shafts. Several guide rails are installed on the bracket. Several sliders are slidably connected to the guide rails. The sliders are connected to the support plates. Several angle plates are connected to the lower shear box. The angle plates are L-shaped. Adjusting screws are installed on the angle plates. One end of the adjusting screws is in contact with the support plate. Several positioning shafts are connected to the support plate. The positioning shaft passes through a side wall of the angle plate where the adjusting screws are installed.

[0010] Preferably, the transverse movement assembly also includes a support plate, a roller and an adapter plate. The support plate is connected to each corner plate. A plurality of rollers are connected to the support plate. The support plate is connected to an adapter plate. The adapter plate is located on the upper side of the roller. The adapter plate is connected to the bottom end of the lower shear box. A water hole is provided on the adapter plate.

[0011] Preferably, the shear assembly also includes a limit plate, a fixed ring and a fixed column, a plurality of fixed rings are installed on the limit plate, fixed columns are installed at the four corners of the bracket, the fixed rings are sleeved on the corresponding fixed columns, and a protrusion one is provided on the upper shear box, and the protrusion one and the limit plate are arranged relative to each other.

[0012] Preferably, the shear assembly also includes a positioning ring, a handle and a water-permeable plate. The positioning ring is installed between the upper shear box and the lower shear box. The upper shear box, the lower shear box and the positioning ring are connected by bolts. A number of handles are connected to the positioning ring. The inner wall of the positioning ring is connected to the water-permeable plate, and a plurality of through holes are provided on the water-permeable plate.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a coarse-grained soil direct shear tester, which has the following beneficial effects:

[0015] The coarse-grained soil direct shear tester fills the sample between the upper shear box and the lower shear box, and the telescopic drive part one drives the pressure plate to descend, the pressure plate presses the sample, and pushes the lower shear box and the pressure sensor through the telescopic drive part two, and the upper shear box and the lower shear box shear the sample relative to the middle area to achieve a shear test on the sample. Before and after the test, the slider in the transverse movement component slides on the guide rail, thereby conveniently adjusting the position of the lower shear box, so that the lower shear box can be moved to the outside of the bracket to disassemble and assemble the sample, and when the position of the lower shear box needs to be adjusted, the adjusting screw is turned, the adjusting screw is pressed against the support plate, and the adjustment screw and the support plate cooperate to drive the angle plate and the lower shear box to rise a certain distance, so that the lower shear box can be more conveniently moved out from the bottom of the bracket, which is convenient for users to disassemble and assemble the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0020] Figure 5 For this utility model Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle;

[0021] Figure 6For this utility model Figure 3 Schematic diagram of the cross-sectional structure at CC in the middle.

[0022] Markings in the attached drawings: 1. bracket; 2. telescopic drive part 1; 3. pressure plate; 4. upper shear box; 5. lower shear box; 6. limit plate; 7. raised part 1; 8. fixing ring; 9. support plate; 10. roller; 11. guide rail; 12. slider; 13. support plate; 14. angle plate; 15. telescopic drive part 2; 16. adjusting screw; 17. raised part 2; 18. positioning ring; 19. pressure sensor; 20. fixing column; 21. positioning shaft; 22. handle; 23. water-permeable tray; 24. adapter plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] Example:

[0025] See also Figure 1-6 , a coarse-grained soil direct shear tester comprises a pressing component, a shear component and a lateral movement component.

[0026] The pressing assembly includes a bracket 1, a telescopic driving part 2, a pressing plate 3, an upper shear box 4 and a lower shear box 5. The telescopic driving part 2 is installed on the bracket 1, the output shaft of the telescopic driving part 2 is connected to the pressing plate 3, the upper shear box 4 and the lower shear box 5 are communicated, and the upper shear box 4 and the pressing plate 3 are arranged opposite to each other.

[0027] The shearing assembly includes a telescopic driving part 15 and a protrusion 17. The telescopic driving part 15 is installed on the bracket 1. The output shaft of the telescopic driving part 15 is connected to the pressure sensor 19. The outer wall of the lower shearing box 5 is provided with a protrusion 17. The input end of the pressure sensor 19 is in contact with the protrusion 17.

[0028] The transverse movement assembly includes a guide rail 11, a slider 12, a support plate 13, an angle plate 14, an adjusting screw 16 and a positioning shaft 21. A plurality of guide rails 11 are installed on the bracket 1. A plurality of sliders 12 are slidably connected to the guide rail 11. The slider 12 is connected to the support plate 13. A plurality of angle plates 14 are connected to the lower shear box 5. The angle plate 14 is in an L-shaped plate shape. An adjusting screw 16 is installed on the angle plate 14. One end of the adjusting screw 16 contacts the support plate 13. A plurality of positioning shafts 21 are connected to the support plate 13. The positioning shaft 21 passes through a side wall of the angle plate 14 on which the adjusting screw 16 is installed. The telescopic drive part 1 2 and the telescopic drive part 2 15 are preferably one of a cylinder, a hydraulic cylinder and an electric cylinder. The coarse-grained soil direct shear test machine is preferably a frame type. The direct shear box is a two-layer circular shear box (a square shear box can be customized). The high-pressure oil source pump station provides loading force. The vertical load and horizontal thrust are both measured by load sensors. The pressure sensor 19 is preferably A columnar sensor is selected, and the sample is filled between the upper shear box 4 and the lower shear box 5. The telescopic drive part 12 drives the pressure plate 3 to descend, and the pressure plate 3 presses the sample, and pushes the lower shear box 5 and the pressure sensor 19 through the telescopic drive part 2. The upper shear box 4 and the lower shear box 5 shear the sample relative to the middle area to achieve a shear test on the sample. Before and after the test, the slider 12 in the transverse movement component slides on the guide rail 11, thereby conveniently adjusting the position of the lower shear box 5, so that the lower shear box 5 can be moved to the outside of the bracket 1 for disassembly and assembly of the sample, and when the position of the lower shear box 5 needs to be adjusted, the adjusting screw 16 is turned, and the adjusting screw 16 is against the support plate 13. The adjustment screw 16 and the support plate 13 cooperate to drive the angle plate 14 and the lower shear box 5 to rise a certain distance, so that the lower shear box 5 can be more conveniently moved out from the bottom side of the bracket 1, which is convenient for users to disassemble and assemble the sample.

[0029] Reference Figure 1 and 2 The transverse movement assembly also includes a support plate 9, a roller 10 and an adapter plate 24. The support plate 9 is connected to each corner plate 14. A plurality of rollers 10 are connected to the support plate 9. The support plate 9 is connected to the adapter plate 24. The adapter plate 24 is located on the upper side of the roller 10. The adapter plate 24 is connected to the bottom end of the lower shear box 5. A water hole is provided on the adapter plate 24. Through the setting of the roller 10, part of the water in the sample flows down through the water hole on the adapter plate 24. The lower shear box 5 rolls on the roller 10, replacing the friction of the lower shear box 5 on the support plate 9, thereby reducing the wear of the lower shear box 5 and improving the detection accuracy.

[0030] Reference Figure 1, wherein the shear assembly also includes a limit plate 6, a fixing ring 8 and a fixing column 20. Several fixing rings 8 are installed on the limit plate 6, and fixing columns 20 are installed at the four corners of the bracket 1. The fixing ring 8 is mounted on the corresponding fixing column 20. A protrusion 7 is provided on the upper shear box 4, and the protrusion 7 and the limit plate 6 are arranged relative to each other. The fixing ring 8 is preferably a clamp. As another application form, the fixing ring 8 can be selected as an annular plate-like object, and is connected to the fixing column 20 by screws or tensioning connections. It is preferred that the protrusion and the protrusion 7 are installed on the limit plate 6 and are arranged relative to each other, and the protrusion 7 is supported by the limit plate 6, and the fixing ring 8 is connected to the bracket 1, thereby improving the positioning effect of the limit plate 6, and the limit plate 6 supports the protrusion 7, further improving the positioning effect of the upper shear box 4.

[0031] Reference Figure 2 and 4 The shear assembly also includes a positioning ring 18, a handle 22 and a water-permeable disk 23. The positioning ring 18 is installed between the upper shear box 4 and the lower shear box 5. The upper shear box 4, the lower shear box 5 and the positioning ring 18 are connected by bolts. A plurality of handles 22 are connected to the positioning ring 18. The inner wall of the positioning ring 18 is connected to the water-permeable disk 23. A plurality of through holes are provided on the water-permeable disk 23. The water-permeable disk 23 is supported by the positioning ring 18. The through holes on the water-permeable disk 23 facilitate the downward flow of water in the sample.

[0032] When in use, the sample is filled between the upper shear box 4 and the lower shear box 5, and the telescopic drive part 1 2 drives the pressure plate 3 to descend. The pressure plate 3 presses the sample and pushes the lower shear box 5 and the pressure sensor 19 through the telescopic drive part 2 15. The upper shear box 4 and the lower shear box 5 shear the sample relative to the middle area.

[0033] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0034] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0035] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0036] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Coarse-grained soil direct shear tester, characterized by: It includes a pressing component, a shearing component and a transverse moving component; The material pressing assembly comprises a bracket (1), a telescopic driving part (2), a pressing plate (3), an upper shear box (4) and a lower shear box (5); the telescopic driving part (2) is mounted on the bracket (1); the output shaft of the telescopic driving part (2) is connected to the pressing plate (3); the upper shear box (4) and the lower shear box (5) are in communication; and the upper shear box (4) and the pressing plate (3) are arranged relative to each other; The shearing assembly comprises a second telescopic driving part (15) and a second protruding part (17); the second telescopic driving part (15) is mounted on the bracket (1); the output shaft of the second telescopic driving part (15) is connected to the pressure sensor (19); the outer wall of the lower shearing box (5) is provided with a second protruding part (17); the input end of the pressure sensor (19) is in contact with the second protruding part (17); The transverse movement assembly comprises a guide rail (11), a slider (12), a support plate (13), an angle plate (14), an adjustment screw (16) and a positioning shaft (21). The guide rails (11) are mounted on the bracket (1). The guide rails (11) are slidably connected with the sliders (12). The sliders (12) are connected to the support plate (13). The lower shear box (5) is connected with the angle plates (14). The angle plates (14) are L-shaped. The angle plates (14) are mounted with adjustment screws (16). One end of the adjustment screws (16) is in contact with the support plate (13). The support plate (13) is connected with the positioning shafts (21). The positioning shafts (21) pass through a side wall of the angle plate (14) on which the adjustment screws (16) are mounted.

2. The coarse-grained soil direct shear tester according to claim 1, characterized in that: The transverse movement assembly further comprises a support plate (9), a roller (10) and an adapter plate (24); the support plate (9) is connected to each corner plate (14); a plurality of rollers (10) are connected to the support plate (9); the support plate (9) is connected to the adapter plate (24); the adapter plate (24) is located on the upper side of the roller (10); the adapter plate (24) is connected to the bottom end of the lower shear box (5); and a water hole is provided on the adapter plate (24).

3. The coarse-grained soil direct shear tester according to claim 1, characterized in that: The shearing assembly further comprises a limiting plate (6), a fixing ring (8) and a fixing column (20); a plurality of fixing rings (8) are mounted on the limiting plate (6); fixing columns (20) are mounted at the four corners of the bracket (1); the fixing rings (8) are sleeved on the corresponding fixing columns (20); a protrusion (7) is arranged on the upper shearing box (4); and the protrusion (7) and the limiting plate (6) are arranged relative to each other.

4. The coarse-grained soil direct shear tester according to claim 1, characterized in that: The shear assembly further comprises a positioning ring (18) and a water permeable disk (23); the positioning ring (18) is installed between the upper shear box (4) and the lower shear box (5); the upper shear box (4), the lower shear box (5) and the positioning ring (18) are connected by bolts; the inner wall of the positioning ring (18) is connected to the water permeable disk (23); and a plurality of through holes are provided on the water permeable disk (23).

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