Direct shear apparatus convenient to adjust and sample and use method

Abstract

The invention relates to the technical field of direct shear apparatuses, and discloses a direct shear apparatus convenient to adjust and sample and a use method.The direct shear apparatus comprises a placement table, a shear box, a horizontal thrust device and a vertical loading device, the shear box, the horizontal thrust device and the vertical loading device are installed at the top end of the placement table, and the shear box comprises an upper shear box body and a lower shear box body which is slidably connected to the top end of the placement table; the upper shear box is slidably connected to the top end of the lower shear box; the bearing assembly comprises two bearing box bodies and two clamping pieces, through holes are formed in the middle of the upper shear box and the middle of the lower shear box, the two bearing box bodies are located in the two through holes respectively, and the two clamping pieces are arranged on the upper shear box and the lower shear box respectively and used for clamping the bearing box bodies; the weighing assembly comprises a placing box and a weighing part, the placing box is installed at the adjusting end of the vertical loading device, and the weighing part is arranged on the placing table and used for conveying weighing materials into the placing box, so that the mass of the placing box is adjusted. According to the device, the soil sample can be conveniently mounted and dismounted, different loads can be measured, adjustment is accurate, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of direct shear instruments, and in particular to a direct shear instrument which is convenient for adjustment and sampling and a use method thereof. Background Art

[0002] The direct shear apparatus is an instrument used to measure the shear strength of soil indoors in geotechnical tests. It applies horizontal shear force to the sample and measures the deformation of the sample to determine the shear strength of the sample.

[0003] In the prior art, the magnitude of the vertical load applied by the direct shear instrument is mostly adjusted by placing weights of different masses, and the mass parameters of the weights are mostly fixed settings. Therefore, it is impossible to adjust the specified vertical load during measurement, affecting the overall measurement results. In addition, the shear box in the prior art is mostly an integral structure with a fixed internal size space. It cannot be changed according to actual needs when used to place soil samples. It is also inconvenient to remove the soil samples after the subsequent measurements are completed, which can easily lead to damage to the soil samples. There is also the disadvantage of residual soil samples inside that affects subsequent use.

[0004] Therefore, there is an urgent need for a direct shear instrument that is easy to adjust and sample and a method of use to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a direct shear instrument and a method of use which are convenient for adjustment and sampling, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a direct shear instrument that is easy to adjust and sample, comprising a placement table and a shear box installed on the top of the placement table, a horizontal thrust device and a vertical loading device,

[0007] The shear box comprises an upper shear box and a lower shear box, wherein the lower shear box is slidably connected to the top of the placement table, and the upper shear box is slidably connected to the top of the lower shear box;

[0008] The bearing assembly comprises two bearing box bodies and two clamping members, the middle parts of the upper shear box and the lower shear box are both provided with through holes, the two bearing box bodies are respectively located in the two through holes, and the two clamping members are respectively arranged on the upper shear box and the lower shear box for clamping the bearing box bodies;

[0009] The weighing assembly comprises a placing box and a weighing piece. The placing box is installed on the adjusting end of the vertical loading device. The weighing piece is arranged on the placing platform and is used for conveying weighing materials into the placing box, so as to adjust the mass of the placing box.

[0010] Preferably, a plurality of sliding holes are opened circumferentially on the inner side wall of the through hole, and the clamping member includes a support tube fixedly connected in the sliding hole, a moving rod is slidably connected in the support tube, a clamping plate is fixedly connected to one end of the moving rod, the clamping plate is in contact with the supporting box body, a driving member is arranged in the upper shear box and the lower shear box, and the other end of the moving rod is transmission-connected to the driving member.

[0011] Preferably, the driving member includes a plurality of threaded rods rotatably connected to the upper shear box and the lower shear box, one end of the threaded rod extends into the moving rod and is threadedly connected to the moving rod, and the other end of the threaded rod is fixedly connected to a driven wheel, and a driving wheel and a driving motor are provided in the upper shear box and the lower shear box, and a driving wheel is fixedly connected to the output shaft of the driving motor through a transmission shaft, and the driven wheel and the driving wheel are respectively meshed with the driving wheel.

[0012] Preferably, the carrying box body comprises a first box body and a second box body, the cross-sections of the first box body and the second box body are both semicircular arc-shaped, and the first box body and the second box body are spliced ​​into a cylindrical structure through a connecting piece.

[0013] Preferably, the connecting member includes a connecting block fixedly connected to the side wall of the first box body, a connecting groove is provided on the side wall of the second box body, the connecting block is adapted to the connecting groove, a buckle is fixedly connected to the connecting block, a clip is fixedly connected in the connecting groove, the buckle is clipped with the clip strip, and a disassembly member is provided on the first box body, and is configured so that the buckle is separated from the clip strip when the disassembly member is manually pulled.

[0014] Preferably, the disassembly component includes a plurality of annular rope loops arranged on the first box body, two ends of the annular rope loops are respectively located in the two buckles, and the rope body of the annular rope loops is located outside the first box body.

[0015] Preferably, the weighing device includes a material box fixedly connected to the placement table, the material box is divided into a screening chamber and a plurality of storage chambers, the plurality of storage chambers are respectively connected to the screening chamber, a spiral conveying roller is installed in the storage chamber, a weighing trough is fixedly connected to the outer wall of the material box, the storage chamber transports the weighing material to the weighing trough through the spiral conveying roller, and the weighing trough is connected to the placement box.

[0016] Preferably, a plurality of screening nets are fixedly connected in the screening chamber from top to bottom, the apertures of the plurality of screening nets are different, the screening nets are arranged obliquely, and the lowest end of the screening nets is connected to the storage chamber.

[0017] Preferably, the weighing material is sand and gravel.

[0018] A method for using a direct shear apparatus that is convenient for adjustment and sampling comprises the following steps:

[0019] The two carrying box bodies are respectively installed in the upper shear box and the lower shear box through the clamping member;

[0020] The weighed material of the required mass is weighed by the weighing piece and transported into the placement box, and is measured by the horizontal thrust device and the vertical loading device;

[0021] After the determination is completed, the carrying box is disassembled to obtain the soil sample.

[0022] Compared with the prior art, the present invention has the following advantages and technical effects:

[0023] The present invention provides a direct shear instrument and a method of use that are easy to adjust and sample. The carrying box body is installed on the upper shear box and the lower shear box through a clamping piece. The weighing piece is provided to transport the weighing material of the selected mass into the placement box, thereby controlling the vertical loading device to apply different vertical loads, and cooperating with the horizontal thrust device to achieve shearing of the soil sample. The application realizes convenient installation and disassembly of the soil sample, and at the same time realizes the application of different vertical loads by adjusting the mass, and the adjustment is precise and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the shear box of the present invention;

[0027] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;

[0028] Figure 4 This is a schematic diagram of the structure of the annular rope loop of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the weighing piece of the present invention;

[0030] Among them, 1. placement table; 2. horizontal thrust device; 3. vertical loading device; 4. upper shear box; 5. lower shear box; 6. bearing box body; 61. first box body; 62. second box body; 63. connecting block; 64. connecting groove; 65. buckle; 66. clamping strip; 67. annular rope loop; 7. clamping piece; 71. support tube; 72. moving rod; 73. clamping plate; 74. threaded rod; 75. driven wheel; 76. driving wheel; 77. driving motor; 78. driving wheel; 8. through hole; 9. placement box; 10. weighing piece; 101. material box; 102. screening chamber; 103. storage chamber; 104. spiral conveying roller; 105. weighing trough; 106. screening net; 11. sliding hole. DETAILED DESCRIPTION

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

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-Figure 5 The present invention provides a direct shear apparatus that is convenient for adjustment and sampling, comprising a placing table 1, a shear box installed on the top of the placing table 1, a horizontal thrust device 2 and a vertical loading device 3.

[0034] The shear box includes an upper shear box 4 and a lower shear box 5, wherein the lower shear box 5 is slidably connected to the top of the placing table 1, and the upper shear box 4 is slidably connected to the top of the lower shear box 5;

[0035] The bearing assembly includes two bearing box bodies 6 and two clamping members 7. A through hole 8 is opened in the middle of the upper shear box 4 and the lower shear box 5. The two bearing box bodies 6 are respectively located in the two through holes 8. The two clamping members 7 are respectively arranged on the upper shear box 4 and the lower shear box 5 for clamping the bearing box bodies 6.

[0036] The weighing assembly includes a placement box 9 and a weighing piece 10. The placement box 9 is installed at the adjustment end of the vertical loading device 3. The weighing piece 10 is arranged on the placement platform 1 to transport the weighing material into the placement box 9, thereby adjusting the mass of the placement box 9.

[0037] A further optimized solution is that a plurality of sliding holes 11 are opened circumferentially on the inner side wall of the through hole 8, and the clamping member 7 includes a support tube 71 fixedly connected in the sliding hole 11, a moving rod 72 is slidably connected in the support tube 71, a clamping plate 73 is fixedly connected at one end of the moving rod 72, the clamping plate 73 is in contact with the supporting box body 6, a driving member is arranged in the upper shear box 4 and the lower shear box 5, and the other end of the moving rod 72 is transmission-connected to the driving member.

[0038] In one embodiment of the present invention, referring to Figure 2 The carrying box body 6 is placed in the through hole 8 and clamped by the clamping plate 73.

[0039] To further optimize the solution, the driving part includes a plurality of threaded rods 74 rotatably connected to the upper shear box 4 and the lower shear box 5, one end of the threaded rod 74 extends into the moving rod 72 and is threadedly connected to the moving rod 72, and the other end of the threaded rod 74 is fixedly connected to a driven wheel 75, and a driving wheel 76 and a driving motor 77 are provided in the upper shear box 4 and the lower shear box 5. A driving wheel 78 is fixedly connected to the output shaft of the driving motor 77 through a transmission shaft, and the driven wheel 75 and the driving wheel 78 are respectively meshed with the driving wheel 76.

[0040] In one embodiment of the present invention, referring to Figure 2 The driving motor 77 is provided to drive the driving wheel 78 to rotate, and when rotating, it drives the meshing driving wheel 76 to rotate, and the driving wheel 76 drives the driven wheel 75 to rotate, thereby controlling the rotation of the threaded rod 74. When the threaded rod 74 rotates, it drives the threaded moving rod 72 to slide out, thereby clamping the carrier box body 6, and vice versa, the carrier box body 6 is disassembled.

[0041] According to a further optimized solution, the carrying box body 6 includes a first box body 61 and a second box body 62. The cross-sections of the first box body 61 and the second box body 62 are both semicircular arcs. The first box body 61 and the second box body 62 are spliced ​​into a cylindrical structure through a connecting piece.

[0042] In one embodiment of the present invention, referring to Figure 2 , select the carrying box body 6 of different specifications according to actual needs, and the split structure is convenient for subsequent disassembly to take out the soil sample from the inside.

[0043] A further optimized solution is that the connecting piece includes a connecting block 63 fixedly connected to the side wall of the first box body 61, a connecting groove 64 is opened on the side wall of the second box body 62, the connecting block 63 is adapted to the connecting groove 64, a buckle 65 is fixedly connected to the connecting block 63, a clamping strip 66 is fixedly connected in the connecting groove 64, the buckle 65 is clamped with the clamping strip 66, and a disassembly piece is provided on the first box body 61, and is configured so that the buckle 65 is separated from the clamping strip 66 when the disassembly piece is manually pulled.

[0044] In one embodiment of the present invention, referring to Figure 3After the first box body 61 and the second box body 62 are docked, the connecting block 63 is snapped into the connecting groove 64, and the buckle 65 is snapped into the clamping strip 66, thereby achieving a stable connection between the first box body 61 and the second box body 62.

[0045] Specifically, the buckle 65 is a C-shaped buckle, and the clip 66 is a cylindrical clip, and the two are compatible.

[0046] According to a further optimized solution, the disassembly parts include a plurality of annular rope loops 67 arranged on the first box body 61 , the two ends of the annular rope loops 67 are respectively located in the two buckles 65 , and the rope body of the annular rope loops 67 is located outside the first box body 61 .

[0047] In one embodiment of the present invention, referring to Figure 4 After the buckle 65 and the clamping strip 66 are clamped, the annular rope loop 67 is squeezed between the buckle 65 and the clamping strip 66. During subsequent disassembly, the buckle 65 and the clamping strip 66 are separated by manually pulling the rope body located outside the first box body 61, thereby reducing the impact on the internal soil sample during separation.

[0048] A further optimized solution is that the weighing piece 10 includes a material box 101 fixedly connected to the placement table 1, the material box 101 is divided into a screening chamber 102 and a plurality of storage chambers 103, the plurality of storage chambers 103 are respectively connected to the screening chamber 102, a spiral conveying roller 104 is installed in the storage chamber 103, a weighing trough 105 is fixedly connected to the outer wall of the material box 101, the storage chamber 103 conveys the weighing material to the weighing trough 105 through the spiral conveying roller 104, and the weighing trough 105 is connected to the placement box 9.

[0049] In one embodiment of the present invention, referring to Figure 5 A feed port is provided on the material box 101. The incoming weighing materials are screened into different particle sizes by the screening chamber 102 and stored in a number of storage chambers 103. The weighing materials are subsequently transported to the weighing tank 105 through the spiral conveying roller 104. The weighing tank 105 has a mass sensor for weighing. For weighing materials of different particle sizes, when the mass difference is large, large-size weighing materials can be transported, and when the mass difference is small, small-size weighing materials can be transported, so as to facilitate accurate control of different masses. Subsequently, the weighed weighing materials are transported to the placement box 9, and after the measurement is completed, the weighing materials in the placement box 9 are transported back to the material box 101 for use.

[0050] According to a further optimization scheme, a plurality of screening nets 106 are fixedly connected in the screening chamber 102 from top to bottom, the apertures of the plurality of screening nets 106 are different, the screening nets 106 are tilted, and the lowest end of the screening nets 106 is connected to the storage chamber 103 .

[0051] In one embodiment of the present invention, referring to Figure 5The apertures of several screening nets 106 gradually decrease from top to bottom, and are used to screen weighing materials of different particle sizes. After screening, they are respectively transported to several storage chambers 103. By setting weighing materials of different particle sizes, it is convenient to accurately adjust the quality later.

[0052] The solution is further optimized and the weighing material is sand and gravel.

[0053] In one embodiment of the present invention, sand and gravel are selected as weighing materials to facilitate transportation and flow, avoid accumulation and residue in the device, and facilitate screening of different particle sizes, thereby facilitating quality adjustment.

[0054] A method for using a direct shear apparatus for adjusting a vertical load comprises the following steps:

[0055] The two carrying box bodies 6 are respectively installed in the upper shear box 4 and the lower shear box 5 through the clamping parts;

[0056] In one embodiment of the present invention, referring to Figure 2 , select a carrier box body 6 of appropriate specifications, place the soil sample in the carrier box body 6, and control the driving motor 77 to drive the moving rod 72 to move, so that the clamping plate 73 contacts the carrier box body 6, thereby achieving the clamping installation of the carrier box body 6.

[0057] The weighed material of the required mass is weighed by the weighing element 10 and conveyed to the placement box 9, and measured by the horizontal thrust device 2 and the vertical loading device 3;

[0058] In one embodiment of the present invention, referring to Figure 1 After the weighing material is transported, a horizontal thrust is applied through the horizontal thrust device 2, and a vertical loading device 3 applies a vertical load through a certain mass of weighing material, thereby completing the measurement.

[0059] Specifically, a dial indicator is also provided, the measuring end of the dial indicator contacts the upper shear box 4, the horizontal thrust device 2 is an electric push rod, the telescopic end contacts the lower shear box 5, and the two are respectively located on both sides of the top of the two side placement platforms 1.

[0060] After the measurement is completed, the carrying box body 6 is disassembled to obtain the soil sample.

[0061] In one embodiment of the present invention, referring to Figure 2After the measurement is completed, the driving motor 77 is used to control the driving wheel 78 to rotate in the opposite direction. When the driving wheel 78 rotates, the driven wheel 75 is driven to rotate through the meshing active wheel 76, thereby controlling the threaded rod 74 to rotate in the opposite direction to drive the moving rod 72 to move away from the supporting box body 6, thereby releasing the clamping of the supporting box body 6, so that the supporting box body 6 can be removed. After removal, the annular rope loop 67 is manually pulled to separate the buckle 65 from the clamping strip 66, thereby separating the first box body 61 from the second box body 62, making it easy to remove the internal soil sample and clean the interior for subsequent use.

[0062] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A direct shear apparatus convenient for adjustment and sampling, comprising a placing table (1), a shear box mounted on the top of the placing table (1), a horizontal thrust device (2) and a vertical loading device (3), characterized in that: The shear box comprises an upper shear box (4) and a lower shear box (5), wherein the lower shear box (5) is slidably connected to the top of the placement table (1), and the upper shear box (4) is slidably connected to the top of the lower shear box (5); A bearing assembly, comprising two bearing box bodies (6) and two clamping members (7), wherein the upper shear box (4) and the lower shear box (5) are both provided with through holes (8) in the middle, the two bearing box bodies (6) are respectively located in the two through holes (8), and the two clamping members (7) are respectively arranged on the upper shear box (4) and the lower shear box (5) for clamping the bearing box bodies (6); The weighing assembly comprises a placement box (9) and a weighing piece (10), wherein the placement box (9) is installed at the adjustment end of the vertical loading device (3), and the weighing piece (10) is arranged on the placement platform (1) for conveying weighing materials into the placement box (9), thereby adjusting the mass of the placement box (9).

2. A direct shear apparatus that is easy to adjust and sample according to claim 1, characterized in that: A plurality of sliding holes (11) are provided on the inner side wall of the through hole (8) along the circumferential direction; the clamping member (7) comprises a support tube (71) fixedly connected in the sliding hole (11); a moving rod (72) is slidably connected in the support tube (71); a clamping plate (73) is fixedly connected to one end of the moving rod (72); the clamping plate (73) is in contact with the supporting box body (6); a driving member is provided in the upper shear box (4) and the lower shear box (5); the other end of the moving rod (72) is transmission-connected to the driving member.

3. A direct shear apparatus for easy adjustment and sampling according to claim 2, characterized in that: The driving member comprises a plurality of threaded rods (74) rotatably connected to the upper shear box (4) and the lower shear box (5); one end of the threaded rod (74) extends into the moving rod (72) and is threadedly connected to the moving rod (72); the other end of the threaded rod (74) is fixedly connected to a driven wheel (75); a driving wheel (76) and a driving motor (77) are provided in the upper shear box (4) and the lower shear box (5); a driving wheel (78) is fixedly connected to the output shaft of the driving motor (77) via a transmission shaft; the driven wheel (75) and the driving wheel (78) are respectively meshed with the driving wheel (76).

4. A direct shear apparatus for easy adjustment and sampling according to claim 1, characterized in that: The carrying box body (6) comprises a first box body (61) and a second box body (62); the cross-sections of the first box body (61) and the second box body (62) are both semicircular arc-shaped; the first box body (61) and the second box body (62) are spliced ​​into a cylindrical structure via a connecting piece.

5. A direct shear apparatus for easy adjustment and sampling according to claim 4, characterized in that: The connecting member comprises a connecting block (63) fixedly connected to the side wall of the first box body (61); a connecting groove (64) is provided on the side wall of the second box body (62); the connecting block (63) is adapted to the connecting groove (64); a buckle (65) is fixedly connected to the connecting block (63); a clamping strip (66) is fixedly connected in the connecting groove (64); the buckle (65) is clamped with the clamping strip (66); a disassembly member is provided on the first box body (61) and is configured so that when the disassembly member is manually pulled, the buckle (65) is separated from the clamping strip (66).

6. A direct shear apparatus for easy adjustment and sampling according to claim 5, characterized in that: The disassembly component comprises a plurality of annular rope loops (67) arranged on the first box body (61), two ends of the annular rope loops (67) are respectively located in the two buckles (65), and the rope body of the annular rope loops (67) is located outside the first box body (61).

7. A direct shear apparatus for easy adjustment and sampling according to claim 1, characterized in that: The weighing element (10) comprises a material box (101) fixedly connected to the placement platform (1); the material box (101) is divided into a screening chamber (102) and a plurality of storage chambers (103); the plurality of storage chambers (103) are respectively connected to the screening chamber (102); a spiral conveying roller (104) is installed in the storage chamber (103); a weighing trough (105) is fixedly connected to the outer wall of the material box (101); the storage chamber (103) conveys weighed material to the weighing trough (105) through the spiral conveying roller (104); and the weighing trough (105) is connected to the placement box (9).

8. A direct shear apparatus for easy adjustment and sampling according to claim 7, characterized in that: A plurality of screening nets (106) are fixedly connected in the screening chamber (102) from top to bottom, the apertures of the plurality of screening nets (106) are different, the screening nets (106) are arranged obliquely, and the lowest end of the screening net (106) is communicated with the storage chamber (103).

9. A direct shear apparatus for easy adjustment and sampling according to claim 8, characterized in that: The weighing material is sand and gravel.

10. A method for using a direct shear apparatus that is convenient for adjustment and sampling, applicable to the direct shear apparatus that is convenient for adjustment and sampling as claimed in claim 1, characterized in that: The following steps are involved: The two carrying box bodies (6) are respectively installed in the upper shear box (4) and the lower shear box (5) through the clamping parts; The weighing material of the required mass is weighed by the weighing member (10) and transported to the placement box (9), and is measured by the horizontal thrust device (2) and the vertical loading device (3); After the measurement is completed, the carrying box body (6) is disassembled to obtain the soil sample.

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