Outdoor portable in-situ direct shear apparatus

Abstract

The utility model discloses a field portable in-situ direct shear apparatus, which relates to the technical field of soil structure detection and comprises a main frame body, a placement adjusting unit and a convenient folding unit, the main frame body is of a cuboid structure, a channel is formed in the upper end of the main frame body, and a direct shear apparatus main body is embedded in the channel; the main frame body comprises a side mounting groove, a connecting shaft, a clamping block, a stretching seat and a pedal, and the convenient folding unit is mounted at the upper end and the front side of the main frame body. The device is provided with a reliable placement adjusting unit, and the main frame body can be fixed by stepping on the four pedals on the side surfaces of the main frame body, so that the overall stability of an instrument in the detection operation process is ensured; by adjusting the heights of the four supporting blocks, the main frame body can adapt to the field uneven ground; and a convenient folding unit is also arranged, so that the instrument can be conveniently carried outdoors, and the detection requirements of various field environment soil are met.

Description

Technical Field

[0001] This utility model relates to the field of soil structure detection technology, specifically a portable in-situ direct shear instrument for field use. Background Technology

[0002] The vast majority of instability in geotechnical engineering is caused by shear failure, making the accurate determination of the shear strength parameters of soil and rock masses crucial in geotechnical engineering construction. Since instability failure in geotechnical engineering is always accompanied by the development of shear displacement, the method of testing soil and rock masses by applying shear force (or shear displacement) has always been highly valued.

[0003] Existing direct shear apparatuses are mostly fixed in the laboratory, requiring the samples to be taken and sent back to the laboratory for testing. However, the sampling process can affect the structure of the soil and rock, leading to deviations between experimental data and actual conditions. Furthermore, existing instruments are bulky and inconvenient to carry. Therefore, we propose a portable in-situ direct shear apparatus for the field. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a portable in-situ direct shearing instrument for field use. This instrument features a reliable placement and adjustment unit. By stepping on the four foot pedals on the side of the main frame, the main frame can be fixed in place, ensuring the overall stability of the instrument during testing. Furthermore, by adjusting the height of the four support blocks, the main frame can adapt to uneven terrain in the field. It also has a convenient folding unit, making the instrument easy to carry outdoors and meeting the soil testing needs of various field environments. This effectively solves the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable in-situ direct shearing device for field use, comprising a main frame, a placement and adjustment unit, and a convenient folding unit;

[0006] Main frame: It is a cuboid structure with a channel at the top, in which the main body of the straight shearing device is embedded;

[0007] Main frame: includes side mounting slots, connecting shafts, locking blocks, extension seats, and foot pedals. Two side mounting slots are provided at the lower positions of both the left and right ends of the main frame. The two side mounting slots are symmetrically distributed front and back. The side mounting slots are composed of two sections, narrower at the top and wider at the bottom. The extension seats are rotatably connected to the inside of the side mounting slots through the connecting shafts. The connecting shafts are vertically fixed to the end of the side mounting slots away from the middle side. The foot pedals are fixedly connected to the end of the extension seats away from the connecting shafts. The foot pedals and the lower end surfaces of the extension seats are flush. The lower end of the connecting shafts is fixedly connected to the locking blocks, which support the lower side of the extension seats.

[0008] Convenient folding unit: installed on the upper part and front side of the main frame.

[0009] The main frame is used for mounting the main body of the direct shearing instrument. The groove at the top of the main frame is used for folding the main body of the direct shearing instrument. The components in the convenient folding unit make the instrument more convenient to carry in the field. The components in the placement and adjustment unit can easily fix the main frame and can be adjusted to provide stable support for the main frame. After the instrument is placed on the ground, the four extension seats on the side of the main frame are rotated outwards until they are perpendicular to the side. The operator's feet can be placed on the foot pedals, which can fix the main frame and ensure the overall stability of the instrument during the testing operation. The connecting shaft allows the extension seats to move, so that they can be stored in the mounting slot and can also be easily removed for use.

[0010] Furthermore, the placement and adjustment unit also includes a threaded shaft, support blocks, and a screwing block. The extension seat has a vertical threaded shaft internally connected to it. A circular support block is fixedly connected to the lower end of the threaded shaft, and two screwing blocks are fixedly connected to the upper end of the threaded shaft. When the upper screwing block is screwed, the threaded shaft rotates forward, causing the support block to rotate out from the bottom of the extension seat. The four support blocks, arranged diagonally in a rectangle on all four sides, are independently adjustable, allowing the main frame to adapt to uneven terrain by adjusting the height of the support blocks.

[0011] Furthermore, the convenient folding unit includes a connecting column and a locking frame. A transverse connecting column is fixedly connected to a channel on the upper rear side of the main frame. The connecting column passes through the end frame of the shearing device body, and the shearing device body is rotatably connected to the main frame via the connecting column. An L-shaped locking frame is rotatably connected to the upper oblique ends of both sides of the main frame. The connecting column is used for the rotatable connection between the shearing device body and the main frame. Under the action of the connecting column, the shearing device body can be flipped outward and placed against a slope or wall structure for testing. The locking frame can rotate to the upper side of the main frame, thereby securing the shearing device body when it is folded inside the main frame, preventing the shearing device body from accidentally unfolding during transport.

[0012] Furthermore, the convenient folding unit also includes a combination groove, a measuring component, and a soil sampler. Three combination grooves are equidistantly spaced at the upper end of the direct shear apparatus body. Each combination groove consists of square and circular sections. The soil sampler is installed inside the circular section of the combination groove, and consists of a circular container and a lower propulsion device. The measuring component is installed inside the square section of the combination groove, and includes a data acquisition instrument, a load sensor, and a displacement sensor. A circular through-hole is located on the outer ring of the soil sampler, near the measuring component. The combination groove is used for installing the measuring component and the soil sampler. The soil sampler, propelled by the lower propulsion device, can be embedded into the soil and apply a pressure perpendicular to the slope to the soil sampled inside. At this time, the detection end of the measuring component can extend into the soil sampler through the circular through-hole. All components work together to collect soil shear strength data.

[0013] Furthermore, the convenient folding unit also includes a carrying handle and a front mounting slot. The front mounting slot is located at the front end of the main frame, and a U-shaped carrying handle is installed inside the front mounting slot. The front mounting slot is used for installing the carrying handle, which allows the instrument to be easily lifted vertically.

[0014] Furthermore, the convenient folding unit also includes connecting short shafts and finger slots. The interior of the carrying frame is rotatably connected to the interior of the front mounting slot via connecting short shafts on both sides. The edges of the middle section of the carrying frame are rounded, and a finger slot is provided at the center of the inner side of the middle section. The connecting short shafts allow the carrying frame to move, and the finger slots facilitate the removal of the carrying frame from the front mounting slot.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This portable in-situ direct shearing instrument for the field has the following advantages:

[0016] 1. It has a reliable placement and adjustment unit. By stepping on the four foot pedals on the side of the main frame, the main frame can be fixed to ensure the overall stability of the instrument during the testing operation. The threaded shaft can be screwed in to drive the support block to rotate out from the bottom of the extension seat. The four support blocks distributed diagonally in a rectangle on the four sides are independently adjustable, so the height of the support block can be adjusted to adapt the main frame to the uneven ground in the field.

[0017] 2. It has a convenient folding unit, which makes this instrument easy to carry outdoors to meet the soil detection needs of various field environments;

[0018] 3. This utility model has a reliable placement and adjustment unit. By stepping on the four foot pedals on the side of the main frame, the main frame can be fixed to ensure the overall stability of the instrument during the detection operation. By adjusting the height of the four support blocks, the main frame can adapt to uneven ground in the field. It also has a convenient folding unit, which makes the instrument easy to carry outdoors to meet the detection needs of various field environments and soils. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the lower oblique structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the upper structure of this utility model.

[0022] In the diagram: 1 Main frame, 2 Direct shear apparatus body, 3 Placement and adjustment unit, 31 Side mounting slot, 32 Connecting shaft, 33 Clamping block, 34 Extension seat, 35 Foot pedal, 36 Threaded shaft, 37 Support block, 38 Tightening block, 4 Convenient folding unit, 41 Connecting column, 42 Combination slot, 43 Measuring component, 44 Soil sampler, 45 Clamping frame, 46 Hand-held frame, 47 Front mounting slot, 48 Connecting short shaft, 49 Finger buckle slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-Figure 3 This embodiment provides a technical solution: a portable in-situ direct shearing device for field use, including a main frame 1, a placement and adjustment unit 3, and a convenient folding unit 4;

[0025] Main frame 1: It is a cuboid structure with a channel at the top, in which the main body 2 of the straight shearing device is embedded;

[0026] Main frame 13: includes side mounting slots 31, connecting shafts 32, locking blocks 33, extension seats 34 and foot pedals 35. Two side mounting slots 31 are provided at the lower positions of both the left and right ends of the main frame 1. The two side mounting slots 31 are symmetrically distributed front and back. The side mounting slots 31 are composed of two sections, narrow at the top and wide at the bottom. The extension seats 34 are rotatably connected to the inside of the side mounting slots 31 through the connecting shafts 32. The connecting shafts 32 are vertically fixed to the end of the side mounting slots 31 away from the middle side. The foot pedal 35 is fixedly connected to the end of the extension seats 34 away from the connecting shafts 32. The lower end surfaces of the foot pedals 35 and the extension seats 34 are flush. The lower end of the connecting shafts 32 is fixedly connected to the locking blocks 33, which support the lower side of the extension seats 34.

[0027] Convenient folding unit 4: installed on the upper end and front side of the main frame 1.

[0028] The main frame 1 is used for mounting the main body 2 of the direct shearing instrument. The groove at the upper end of the main frame 1 is used for folding the main body 2 of the direct shearing instrument. The components in the convenient folding unit 4 make the instrument more convenient to carry in the field. The components in the placement and adjustment unit 3 can easily fix the main frame 1 and can be adjusted to provide stable support for the main frame 1. After the instrument is placed on the ground, the four extension seats 34 on the side of the main frame 1 are rotated outward to be perpendicular to the side. The operator's feet can be pressed on the foot pedal 35, which can fix the main frame 1 and ensure the overall stability of the instrument during the testing operation. The connecting shaft 32 allows the extension seats 34 to move, so that they can be stored in the mounting slot 31 and can also be easily removed for use.

[0029] The adjustment unit 3 also includes a threaded shaft 36, a support block 37, and a screwing block 38. The extension seat 34 is internally threaded with a vertical threaded shaft 36. A circular support block 37 is fixedly connected to the lower end of the threaded shaft 36, and two screwing blocks 38 are fixedly connected to the upper end of the threaded shaft 36. When the upper screwing block 38 is screwed, the threaded shaft 36 screws in, which can drive the support block 37 to rotate out from the bottom of the extension seat 34. The four support blocks 37, which are distributed diagonally in a rectangle on all four sides, are independently adjustable, so that the height of the support block 37 can be adjusted to adapt the main frame 1 to uneven ground in the field.

[0030] The convenient folding unit 4 includes a connecting column 41 and a locking frame 45. A transverse connecting column 41 is fixedly connected to a channel on the upper rear side of the main frame 1. The connecting column 41 passes through the end frame of the shearing instrument body 2. The shearing instrument body 2 is rotatably connected to the main frame 1 via the connecting column 41. An L-shaped locking frame 45 is rotatably connected to the upper left and right sides of the main frame 1. The connecting column 41 is used for the rotatable connection between the shearing instrument body 2 and the main frame 1. Under the action of the connecting column 41, the shearing instrument body 2 can be flipped outwards and placed against a slope or wall structure for testing. The locking frame 45 can rotate to the upper side of the main frame 1, thus securing the shearing instrument body 2 when it is folded inside the main frame 1, preventing accidental unfolding of the shearing instrument body 2 during transport.

[0031] The convenient folding unit 4 also includes a combination groove 42, a measuring component 43, and a soil sampler 44. Three combination grooves 42 are equidistantly spaced on the upper end of the direct shear apparatus body 2. Each combination groove 42 consists of a square segment and a circular segment. The soil sampler 44 is installed inside the circular segment of the combination groove 42. The soil sampler 44 consists of a circular container and a lower propulsion device. The measuring component 43 is installed inside the square segment of the combination groove 42. The measuring component 43 includes a data acquisition instrument, a load sensor, and a displacement sensor. A circular through-hole is provided on the outer annular side of the soil sampler 44, near the measuring component 43. The combination groove 42 is used for the installation of the measuring component 43 and the soil sampler 44. Under the action of the lower propulsion device, the soil sampler 44 can be embedded into the soil and apply a pressure perpendicular to the slope to the soil sampled inside. At this time, the detection end of the measuring component 43 can extend into the interior of the soil sampler 44 through the circular through-hole. All components work together to collect soil shear strength data.

[0032] The convenient folding unit 4 also includes a carrying handle 46 and a front mounting slot 47. The front mounting slot 47 is provided at the front end of the main frame 1, and a U-shaped carrying handle 46 is installed inside the front mounting slot 47. The front mounting slot 47 is used for the installation of the carrying handle 46, which allows the instrument to be easily lifted vertically.

[0033] The convenient folding unit 4 also includes a connecting short shaft 48 and a finger slot 49. The interior of the carrying frame 46 is rotatably connected to the interior of the front mounting slot 47 via the connecting short shafts 48 on both sides. The edges of the middle section of the carrying frame 46 are rounded, and a finger slot 49 is provided at the middle position of the inner side of the middle section. The connecting short shafts 48 allow the carrying frame 46 to move, and the finger slot 49 makes it easy to pry the carrying frame 46 out of the front mounting slot 47.

[0034] The working principle of the portable in-situ direct shearing instrument provided by this utility model is as follows: When using this instrument for outdoor testing, firstly, the extension seats 34 on the four sides of the main frame 1 are unscrewed from the side mounting slots 31, and the unscrewed extension seats 34 are kept perpendicular to the sides of the main frame 1; when the ground at the bottom of the instrument is uneven, by rotating the corresponding side screw block 38, the support block 37 can be unscrewed from the bottom of the extension seat 34 and supported on the ground, thereby adjusting the main frame 1 to be placed in a horizontal state, which facilitates subsequent testing operations; then, the main body 2 of the direct shearing instrument is flipped outward and placed against the ground. The surface of the slope or wall to be inspected is simultaneously monitored. The operator's feet are placed on foot pedal 35, which can fix the main frame 1 to ensure the overall stability of the instrument during the inspection. The combination groove 42 is used for the installation of the measuring component 43 and the soil sampler 44. The soil sampler 44 can be embedded into the soil under the action of the lower propulsion device and apply a pressure perpendicular to the slope to the soil sampled inside. At this time, the detection end of the measuring component 43 can be inserted into the soil sampler 44 through the circular through hole. The components work together to collect the shear strength data of the soil. All parts of this device are designed for easy folding and storage, ultimately forming a compact, elongated cylindrical structure. This makes the instrument easy to carry outdoors and meets the soil detection needs of various field environments. The connecting column 41 is used for the rotatable connection between the main body 2 and the main frame 1. Under the action of the connecting column 41, the main body 2 can be flipped outward. The locking bracket 45 can rotate to the upper side of the main frame 1, thereby securing the main body 2 when it is folded inside the main frame 1, preventing the main body 2 from accidentally unfolding during transport. The front mounting slot 47 is used for the installation of the carrying frame 46. The carrying frame 46 allows the instrument to be lifted vertically. The connecting short shaft 48 allows the carrying frame 46 to move. The finger slot 49 allows the carrying frame 46 to be easily removed from the front mounting slot 47.

[0035] It is worth noting that a storage battery is embedded in the bottom of the main frame 1 disclosed in the above embodiments. The electrical components in the measurement component 43 and the soil sampler 44 are electrically connected to the storage battery through a control switch group. The control switch group controls the operation of the measurement component 43 and the soil sampler 44 using methods commonly used in the prior art.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A portable in-situ direct shearing device for field use, characterized in that: It includes a main frame (1), a placement and adjustment unit (3), and a convenient folding unit (4); Main frame (1): It is a cuboid structure with a channel at the top, in which the main body of the straight shearing instrument (2) is embedded; The adjustment unit (3) includes a side mounting slot (31), a connecting shaft (32), a locking block (33), an extension seat (34), and a foot pedal (35). Two side mounting slots (31) are opened at the lower positions of the left and right ends of the main frame (1). The two side mounting slots (31) are symmetrically distributed front and back. The side mounting slot (31) is composed of two sections, narrow at the top and wide at the bottom. The extension seat (34) is rotatably connected to the inside of the side mounting slot (31) through the connecting shaft (32). The connecting shaft (32) is vertically fixed to the end of the side mounting slot (31) away from the middle side. The foot pedal (35) is fixedly connected to the end of the extension seat (34) away from the connecting shaft (32). The foot pedal (35) and the lower end face of the extension seat (34) are flush. The locking block (33) is fixedly connected to the lower end of the connecting shaft (32). The locking block (33) supports the lower side of the extension seat (34). Convenient folding unit (4): installed on the upper end and front side of the main frame (1).

2. The portable in-situ direct shearing device for field use according to claim 1, characterized in that: The placement adjustment unit (3) also includes a threaded shaft (36), a support block (37) and a screwing block (38). The extension seat (34) is internally threaded with a vertical threaded shaft (36). A circular support block (37) is fixedly connected to the lower end of the threaded shaft (36), and two screwing blocks (38) are fixedly connected to the upper end of the threaded shaft (36).

3. The portable in-situ direct shearing device for field use according to claim 1, characterized in that: The convenient folding unit (4) includes a connecting column (41) and a clamping frame (45). A transverse connecting column (41) is fixedly connected in the groove on the upper rear side of the main frame (1). The connecting column (41) passes through the end frame of the straight shearing instrument body (2). The straight shearing instrument body (2) is rotatably connected to the main frame (1) through the connecting column (41). An L-shaped clamping frame (45) is rotatably connected to the upper left and right sides of the main frame (1).

4. The portable in-situ direct shearing device for field use according to claim 1, characterized in that: The convenient folding unit (4) also includes a combination groove (42), a measuring component (43), and a soil sampler (44). The upper end of the main body (2) of the direct shear device is provided with three combination grooves (42) at equal intervals. The combination groove (42) is composed of a square section and a circular section. The soil sampler (44) is installed inside the circular section of the combination groove (42). The soil sampler (44) is composed of a circular container and a lower propulsion device. The measuring component (43) is installed inside the square section of the combination groove (42). The measuring component (43) includes a data acquisition instrument, a load sensor, and a displacement sensor. A circular through hole is provided on the outer ring of the soil sampler (44) and near the measuring component (43).

5. A portable in-situ direct shearing device for field use according to claim 1, characterized in that: The convenient folding unit (4) also includes a carrying rack (46) and a front mounting slot (47). The front end of the main frame (1) is provided with a front mounting slot (47), and a U-shaped carrying rack (46) is installed inside the front mounting slot (47).

6. A portable in-situ direct shearing device for field use according to claim 5, characterized in that: The convenient folding unit (4) also includes a connecting short shaft (48) and a finger buckle groove (49). The inside of the carrying frame (46) is rotatably connected to the inside of the front mounting groove (47) through the connecting short shafts (48) on both sides. The edges of the middle section of the carrying frame (46) are all rounded, and a finger buckle groove (49) is provided at the middle position of the inner side of the middle section.

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