Soil shear strength and standard penetration test platform

Abstract

The utility model relates to the technical field of soil body test platforms, in particular to a soil body shear strength and standard penetration test platform which comprises a front support frame and a rear support frame, a top plate is fixedly arranged at the top positions of the two support frames, and a soil body shear strength test assembly is arranged on the top plate. The soil shear strength testing assembly comprises a second air cylinder fixedly installed on the top plate, a fixing disc is fixedly installed at the tail end of a telescopic shaft of the second air cylinder, a shear stress sensor is fixedly installed on the bottom face of the fixing disc, and a drill rod is fixedly installed at the bottom of the shear stress sensor; the penetration test assembly comprises a third air cylinder and two guide rods which are fixedly mounted on the top plate, an electromagnet is arranged at the tail end of a telescopic shaft of the third air cylinder, a metal sliding seat is magnetically connected to the electromagnet, the metal sliding seat is in sliding connection with the guide rods, and a cylindrical penetration device is fixedly mounted at the bottom of the metal sliding seat through a vertical rod. According to the utility model, the body shear strength and penetration test operation can be conveniently carried out, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of soil test platforms, in particular to a soil shear strength and standard penetration test platform. Background Art

[0002] Civil engineering is an engineering discipline that studies and applies the principles of soil mechanics and focuses on the design and construction of various buildings and infrastructure. The shear strength of soil refers to the ability of soil, sand, gravel and other earth materials to resist shear forces. In civil engineering, the shear strength of soil is directly related to the stability and bearing capacity of the foundation and the overall safety of the engineering structure. At the same time, understanding the shear strength of soil is the key to foundation design, geological hazard assessment and ensuring engineering safety. The standard penetration test can obtain the shear strength index of soil samples, providing an important basis for the evaluation of the physical and mechanical properties of foundation soil.

[0003] When conducting soil shear strength and standard penetration tests, corresponding experimental devices are usually used. There are many types of experimental devices on the market, but most of them are relatively large when used. They cannot be carried directly to the soil area for on-site in-situ testing. They have the disadvantages of complex operation and long time consumption, which affects the convenience of staff and brings inconvenience to users. In view of this, we have proposed a soil shear strength and standard penetration test platform. Utility Model Content

[0004] The purpose of the present invention is to provide a soil shear strength and standard penetration test platform to solve the defects mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The soil shear strength and standard penetration test platform includes two symmetrical front and rear support frames, a top plate is fixedly installed at the top position of the two support frames, a soil shear strength test assembly is provided on the top plate, the soil shear strength test assembly includes a second cylinder fixedly installed on the top plate, a fixed plate is fixedly installed at the end of the telescopic shaft of the second cylinder, a shear stress sensor is fixedly installed on the bottom surface of the fixed plate, a drill rod is fixedly installed on the bottom of the shear stress sensor, and a penetration test assembly is also provided on the top plate, the penetration test assembly includes a third cylinder fixedly installed on the top plate and two guide rods vertically fixedly installed on the bottom surface of the top plate, an electromagnet is provided at the end of the telescopic shaft of the third cylinder, a metal slide is magnetically connected to the electromagnet, the metal slide is slidably connected to the guide rod, and a cylindrical penetrator is fixedly installed on the bottom of the metal slide through a vertical rod.

[0007] Preferably, the vertical rod is arranged in a vertical shape, and both ends of the vertical rod are fixedly mounted on the metal slide and the cylindrical penetrator respectively.

[0008] Preferably, a support plate is fixedly mounted on the end of the telescopic shaft of the third cylinder, and the electromagnet is fixedly mounted on the bottom surface of the support plate.

[0009] Preferably, the cross-section of the support frame is U-shaped, and the height of the support frame is 120 cm to 150 cm.

[0010] Preferably, the size of the metal slide is adapted to the size of the guide rod, and the metal slide is sleeved on the guide rod.

[0011] Preferably, first cylinders are fixedly mounted on both left and right side plates of the top plate, a rectangular frame is provided on the telescopic shafts of the two first cylinders, and a plurality of rollers arranged in a matrix are fixedly mounted on the bottom surface of the rectangular frame.

[0012] Preferably, a steel plate is fixedly mounted on the end of the telescopic shaft of the first cylinder, and the rectangular frame is fixedly mounted on the bottom surfaces of the two steel plates.

[0013] Preferably, a slide groove arranged along the vertical direction is provided on the vertical section rod body of the support frame, and a slider is fixedly installed on the end plate body of the rectangular frame. The slider is located in the corresponding slide groove and is slidably connected with the slide groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with a support frame and a top plate for supporting operation. After the device moves to the soil detection position, the soil shear strength test operation is directly performed through the soil shear strength test component, and the penetration test operation is performed using the penetration test component. The second cylinder is used to drive the drill rod to be inserted into the soil more labor-saving. The third cylinder is used to drive the cylindrical penetrometer to rise to the corresponding height and fall freely to complete the penetration test operation. It is convenient to use and can achieve the effect of being able to carry out experimental operations in a portable manner.

[0016] 2. The utility model ensures that when in use, the first cylinder can be used to drive the rectangular frame and the roller to move downward, and the roller is supported on the ground to facilitate the movement of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is one of the partial structural diagrams of the utility model;

[0020] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the soil shear strength test assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the explosion structure of the penetration test assembly of the utility model;

[0023] The meaning of each number in the figure is:

[0024] 1. Support frame; 10. Slide; 11. Top plate; 12. First cylinder; 121. Steel plate; 13. Rectangular frame; 14. Slider; 15. Roller;

[0025] 2. Soil shear strength test assembly; 20. Second cylinder; 21. Fixed plate; 22. Shear stress sensor; 23. Drill rod;

[0026] 3. Penetration test assembly; 30. Third cylinder; 301. Support plate; 31. Electromagnet; 32. Guide rod; 33. Metal slide; 34. Vertical rod; 35. Cylindrical penetrator. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-6The utility model provides a technical solution: a soil shear strength and standard penetration test platform, comprising two mutually symmetrical support frames 1 at the front and rear, a top plate 11 fixedly installed at the top position of the two support frames 1, a soil shear strength test assembly 2 is provided on the top plate 11, the soil shear strength test assembly 2 comprises a second cylinder 20 fixedly installed on the top plate 11, a fixed plate 21 is fixedly installed at the end of the telescopic shaft of the second cylinder 20, a shear stress sensor 22 is fixedly installed on the bottom surface of the fixed plate 21, a drill rod 23 is fixedly installed on the bottom of the shear stress sensor 22, the drill rod 23 is inserted into the soil and cooperates with the shear stress sensor 22 to perform the soil shear strength test operation, the value detected by the shear stress sensor 22 is displayed on an external display screen, the data transmission and display between the shear stress sensor 22 and the external display screen are existing conventional technologies, which will not be repeated here;

[0029] Specifically, a penetration test assembly 3 is also provided on the top plate 11. The penetration test assembly 3 includes a third cylinder 30 fixedly mounted on the top plate 11 and two guide rods 32 vertically fixedly mounted on the bottom surface of the top plate 11. An electromagnet 31 is provided at the end of the telescopic shaft of the third cylinder 30. A metal slide 33 is magnetically connected to the electromagnet 31. The metal slide 33 is slidably connected to the guide rod 32. A cylindrical penetrometer 35 is fixedly mounted on the bottom of the metal slide 33 through a vertical rod 34, so that the third cylinder 30 is used to drive the cylindrical penetrometer 35 to rise to the corresponding height and then freely fall to perform the penetration test operation.

[0030] In this embodiment, the vertical rod 34 is arranged vertically, and the two ends of the vertical rod 34 are fixedly mounted on the metal slide 33 and the cylindrical penetrator 35 respectively, so as to fix and pull the cylindrical penetrator 35.

[0031] Specifically, a support plate 301 is fixedly mounted on the end of the telescopic shaft of the third cylinder 30 , and the electromagnet 31 is fixedly mounted on the bottom surface of the support plate 301 , so that the support plate 301 is used to support and mount the electromagnet 31 .

[0032] Furthermore, the cross section of the support frame 1 is U-shaped, and the height of the support frame 1 is 120 cm to 150 cm, so that a stable supporting operation can be performed using the support frame 1 .

[0033] In addition, the size of the metal slide 33 is adapted to the size of the guide rod 32 , and the metal slide 33 is sleeved on the guide rod 32 so that the metal slide 33 can stably slide on the guide rod 32 .

[0034] In this embodiment, first cylinders 12 are fixedly installed on the left and right side plates of the top plate 11, and rectangular frames 13 are provided on the telescopic axes of the two first cylinders 12. A plurality of rollers 15 arranged in a matrix are fixedly installed on the bottom surface of the rectangular frame 13, so that the rollers 15 are used to support the ground, thereby facilitating movement.

[0035] It is worth noting that a steel plate 121 is fixedly installed at the end of the telescopic shaft of the first cylinder 12, and the rectangular frame 13 is fixedly installed on the bottom surface of the two steel plates 121 by a plurality of fastening bolts, so as to facilitate the fixed installation operation; a slide groove 10 arranged along the vertical direction is provided on the vertical section rod body of the support frame 1, and a slider 14 is fixedly installed on the end plate body of the rectangular frame 13. The slider 14 is located in the corresponding slide groove 10 and is slidably connected with the slide groove 10, thereby guiding the movement of the rectangular frame 13.

[0036] When the soil shear strength and standard penetration test platform of the present invention is used, the first cylinder 12 is started and made to work. When the first cylinder 12 is working, the telescopic shaft thereon is extended to drive the rectangular frame 13 and the roller 15 to move downward. After the roller 15 is supported on the ground, the device is moved to a suitable position. After moving to the suitable position, the first cylinder 12 is started and made to work. When the first cylinder 12 is working, the telescopic shaft thereon is shortened to drive the rectangular frame 13 and the roller 15 to move upward. At this time, the support frame 1 is stably supported on the ground.

[0037] Then start the second cylinder 20 and make it work. When the second cylinder 20 works, the telescopic shaft on it extends, driving the drill rod 23 to move downward and insert into the soil, and the shear stress sensor 22 is used to detect the shear strength of the soil. In addition, start the third cylinder 30 and make it work, and at the same time energize the electromagnet 31. After the third cylinder 30 works, the telescopic shaft on it extends, driving the electromagnet 31 to be adsorbed on the metal slide 33. Then, as the telescopic shaft of the third cylinder 30 shortens, the metal slide 33 and the cylindrical penetrator 35 are driven to move upward. When the cylindrical penetrator 35 rises to a suitable height, the power supply of the electromagnet 31 is disconnected. At this time, the electromagnet 31 no longer adsorbs the metal slide 33, and the metal slide 33 and the cylindrical penetrator 35 will fall freely, realizing the penetration test operation.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil shear strength and standard penetration test platform, comprising two mutually symmetrical support frames (1) in the front and rear, characterized in that: A top plate (11) is fixedly installed at the top position of the two support frames (1), and a soil shear strength test assembly (2) is provided on the top plate (11). The soil shear strength test assembly (2) comprises a second cylinder (20) fixedly installed on the top plate (11), a fixed plate (21) is fixedly installed at the end of the telescopic shaft of the second cylinder (20), a shear stress sensor (22) is fixedly installed on the bottom surface of the fixed plate (21), a drill rod (23) is fixedly installed on the bottom of the shear stress sensor (22), and the top plate (11) is also provided with a A penetration test assembly (3) includes a third cylinder (30) fixedly mounted on the top plate (11) and two guide rods (32) vertically fixedly mounted on the bottom surface of the top plate (11), an electromagnet (31) is provided at the end of the telescopic shaft of the third cylinder (30), a metal slide (33) is magnetically connected to the electromagnet (31), the metal slide (33) is slidably connected to the guide rods (32), and a cylindrical penetrometer (35) is fixedly mounted on the bottom of the metal slide (33) via a vertical rod (34).

2. The soil shear strength and standard penetration test platform according to claim 1 is characterized by: The vertical rod (34) is arranged in a vertical shape, and the two ends of the vertical rod (34) are fixedly mounted on the metal slide (33) and the cylindrical penetrator (35) respectively.

3. The soil shear strength and standard penetration test platform according to claim 1 is characterized by: A support plate (301) is fixedly mounted on the end of the telescopic shaft of the third cylinder (30), and the electromagnet (31) is fixedly mounted on the bottom surface of the support plate (301).

4. The soil shear strength and standard penetration test platform according to claim 1 is characterized by: The cross section of the support frame (1) is U-shaped, and the height of the support frame (1) is 120 cm to 150 cm.

5. The soil shear strength and standard penetration test platform according to claim 1 is characterized by: The size of the metal slide (33) is adapted to the size of the guide rod (32), and the metal slide (33) is sleeved on the guide rod (32).

6. The soil shear strength and standard penetration test platform according to claim 1, characterized in that: A first cylinder (12) is fixedly mounted on both the left and right side plates of the top plate (11), a rectangular frame (13) is provided on the telescopic shafts of the two first cylinders (12), and a plurality of rollers (15) arranged in a matrix are fixedly mounted on the bottom surface of the rectangular frame (13).

7. The soil shear strength and standard penetration test platform according to claim 6, characterized in that: A steel plate (121) is fixedly mounted on the end of the telescopic shaft of the first cylinder (12), and the rectangular frame (13) is fixedly mounted on the bottom surfaces of the two steel plates (121).

8. The soil shear strength and standard penetration test platform according to claim 7, characterized in that: A slide groove (10) arranged along the vertical direction is provided on the vertical section rod body of the support frame (1), and a slider (14) is fixedly installed on the end plate body of the rectangular frame (13). The slider (14) is located in the corresponding slide groove (10) and is slidably connected to the slide groove (10).

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