Soil foundation site CBR measuring instrument convenient to adjust

Abstract

The utility model relates to the technical field of bearing ratio testers, and discloses a soil base field CBR measuring instrument convenient to adjust, which comprises a control cabinet, a mounting plate is mounted at the top of the control cabinet, a pressing device is mounted at the top of the mounting plate, a plurality of circular grooves are formed in the top of the mounting plate, and the circular grooves are communicated with the control cabinet. And a containing plate is arranged at the top of the mounting plate. According to the soil base site CBR measuring instrument convenient to adjust, a worker pulls a handle downwards to drive a pull rod to enable an inserting rod to be separated from a circular groove, then a containing plate is moved to a designated position of the top of a mounting plate, and the handle is loosened to enable the inserting rod to fall into the circular groove at the designated position; the position of the containing plate at the bottom of the downward pressing device can be freely adjusted according to actual needs of workers, the workers can conveniently replace an extrusion area for testing soil on the top of the containing plate, multi-directional extrusion testing of the soil is achieved, and the accuracy and the testing efficiency of the soil CBR testing are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing ratio testers, in particular to a soil base field CBR measuring instrument which is convenient to adjust. Background Technique

[0002] The bearing ratio tester is applicable to various soils and mixtures. Soils with a particle size less than 40 mm are compacted in a specified test cylinder mold and then subjected to a bearing ratio test to determine the bearing capacity of the designed road surface, road base, subbase, and roadbed material layer. It is one of the necessary instruments for geotechnical tests.

[0003] The Chinese patent discloses a bearing ratio tester (authorization announcement number CN208705158U). This patented bearing ratio tester can be moved and carried by the rolling contact of universal wheels with the ground. The movement and handling are relatively labor-saving, reducing the labor intensity of people during handling.

[0004] In view of the above and existing related technologies, the inventor believes that the following defects often exist: in the current test practice, in the pressure test link of existing test instruments, for the test area designed for the soil base, due to the physical form of the instrument itself, when adjusting the position of the pressure application device in contact with the soil base, significant movement obstacles are encountered. This limitation significantly hinders the flexible adjustment of the position of the test soil base. Furthermore, during the pressure application process, the position of the soil base is prone to uncontrolled offset. Such offset phenomena seriously weaken the accuracy of the pressure test, resulting in the soil base being unable to receive precise pressure tests as expected. This not only complicates the operation process of the instrument but also weakens the practicality and effectiveness of the instrument. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that there is a disadvantage in the prior art that it is not convenient to adjust the pressure test position. For this reason, we propose a soil base field CBR measuring instrument that is convenient to adjust.

[0006] In order to achieve the above object, the present application adopts the following technical solution: a soil base field CBR measuring instrument that is convenient to adjust, including a control cabinet. An installation plate is installed on the top of the control cabinet. A pressing device is installed on the top of the installation plate. A plurality of circular grooves are opened on the top of the installation plate. A placing plate is arranged on the top of the installation plate. Installation shells are fixedly connected to both sides of the placing plate. A plug rod is slidably connected to the inner wall of the installation shell. The surface of the plug rod is inserted into the circular groove. A pull rod is fixedly connected to the top of the plug rod. A handle is fixedly connected to the top of the pull rod.

[0007] Preferably, two long grooves are formed inside the placing plate. A first sliding plate is slidably connected to the inner wall of the long groove. Two ends of the first sliding plate are fixedly connected to the top of the mounting plate. A second sliding plate is slidably connected to the inner wall of the long groove. Two ends of the second sliding plate are fixedly connected to two ends of the pressing device.

[0008] Preferably, a spring is fixedly connected to the top of the insertion rod. The top end of the spring is fixedly connected to the top of the inner wall of the mounting shell.

[0009] Preferably, sliding grooves are formed on both sides of the inner wall of the mounting shell. Sliding blocks are fixedly connected to both sides of the insertion rod. The surface of the sliding block is slidably connected to the inner wall of the sliding groove.

[0010] Preferably, the spring is placed outside the pull rod. The inner wall of the spring is slidably connected to the surface of the pull rod.

[0011] Preferably, a rounded corner is formed at the bottom of the insertion rod.

[0012] Preferably, the diameter of the insertion rod is adapted to the inner wall of the circular groove.

[0013] The technical effects and advantages of the present utility model:

[0014] In the present utility model, by a staff member pulling down the grip to drive the pull rod so that the insertion rod disengages from the circular groove, and then moving the placing plate to a specified position on the top of the mounting plate and releasing the grip, the insertion rod falls into the circular groove at the specified position, enabling the placing plate to freely adjust its position at the bottom of the pressing device according to the actual needs of the staff member, facilitating the staff member to change the extrusion area of the test soil on the top of the placing plate, realizing multi-directional extrusion testing of the soil, and increasing the accuracy and testing efficiency of the soil CBR test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the sectional view of the fixing structure of the present utility model;

[0017] Figure 3 is the vertical sectional view structural schematic diagram of the present utility model;

[0018] Figure 4 is the sectional view of the sliding structure of the present utility model.

[0019] Legend description: 1, control cabinet; 2, mounting plate; 3, pressing device; 4, circular groove; 5, placing plate; 6, mounting shell; 7, insertion rod; 8, pull rod; 9, grip; 10, long groove; 11, first sliding plate; 12, second sliding plate; 13, spring; 14, sliding groove; 15, sliding block; 16, rounded corner. Detailed implementation manners

[0020] Now, with reference to the accompanying drawings and preferred embodiments, the present utility model will be further described in detail. These drawings are all simplified schematic diagrams, only schematically showing the basic structure of the present utility model, so they only show the components related to the present utility model.

[0021] Refer to Figure 1 - Figure 4 As shown in the figure, the present utility model provides a technical solution: a soil base field CBR measuring instrument convenient for adjustment, including a control cabinet 1. An installation plate 2 is installed on the top of the control cabinet 1. A pressing device 3 is installed on the top of the installation plate 2. A plurality of circular grooves 4 are formed on the top of the installation plate 2. A placing plate 5 is arranged on the top of the installation plate 2. Installation shells 6 are fixedly connected to both sides of the placing plate 5. A plug rod 7 is slidably connected to the inner wall of the installation shell 6. The surface of the plug rod 7 is inserted into the circular groove 4. A pull rod 8 is fixedly connected to the top of the plug rod 7. A handle 9 is fixedly connected to the top of the pull rod 8. By the staff pulling down the handle 9 to drive the pull rod 8, the plug rod 7 is disengaged from the circular groove 4. After moving the placing plate 5 to the designated position on the top of the installation plate 2, the handle 9 is released, so that the plug rod 7 falls into the circular groove 4 at the designated position, enabling the placing plate 5 to freely adjust its position at the bottom of the pressing device 3 according to the actual needs of the staff, facilitating the staff to replace the extrusion area of the test soil on the top of the placing plate 5, realizing the multi-directional extrusion test of the soil, and increasing the accuracy and test efficiency of the soil CBR test.

[0022] Refer to Figure 4 As shown in the figure, in this implementation manner: two long grooves 10 are formed inside the placing plate 5. A first sliding plate 11 is slidably connected to the inner wall of the long groove 10. Both ends of the first sliding plate 11 are fixedly connected to the top of the installation plate 2. A second sliding plate 12 is slidably connected to the inner wall of the long groove 10. Both ends of the second sliding plate 12 are fixedly connected to both ends of the pressing device 3. When the staff moves the placing plate 5, the first sliding plate 11 and the second sliding plate 12 sliding in the long groove 10 limit the moving directions of the placing plate 5 in the front, back, left, and right directions, preventing the test objects placed on the top of the placing plate 5 from spilling when the placing plate 5 moves and tilts.

[0023] Refer to Figure 2 As shown in the figure, in this implementation manner: a spring 13 is fixedly connected to the top of the plug rod 7. The top end of the spring 13 is fixedly connected to the top of the inner wall of the installation shell 6. When the staff pulls up the handle 9 to drive the pull rod 8 to disengage the plug rod 7 from the circular groove 4, the plug rod 7 moves upward while pressing the spring 13 to store energy. When the staff releases the position restraint on the plug rod 7, the spring 13 rebounds and pushes the plug rod 7 to move downward, so that the plug rod 7 is inserted downward into the circular groove 4, thereby resetting the position of the plug rod 7, facilitating the user to insert the plug rod 7 into the circular groove 4 by the force generated by the spring 13.

[0024] Referring to Figure 2 as shown, in this embodiment: sliding grooves 14 are provided on both sides of the inner wall of the installation shell 6. Both sides of the insertion rod 7 are fixedly connected with sliding blocks 15. The surface of the sliding block 15 is slidably connected with the inner wall of the sliding groove 14. When the insertion rod 7 moves up and down, the movement track of the insertion rod 7 is restricted by the sliding connection between the sliding block 15 and the sliding groove 14, so that the insertion rod 7 can only move vertically up and down, preventing the insertion rod 7 from tilting when moving and causing the insertion deviation between the insertion rod 7 and the circular groove 4.

[0025] Referring to Figure 2 as shown, in this embodiment: the spring 13 is placed outside the pull rod 8. The inner wall of the spring 13 is slidably connected with the surface of the pull rod 8. When the spring 13 operates, the spring 13 moves outside the pull rod 8, preventing the spring 13 from curling and winding with each other when rebounding, which affects the normal operation of the component, thereby improving the stability of the spring 13 operation.

[0026] Referring to Figure 2 as shown, in this embodiment: a rounded corner 16 is provided at the bottom of the insertion rod 7. When the insertion rod 7 is inserted downward into the circular groove 4, the insertion rod 7 contacts the top of the circular groove 4. Through the smooth design of the rounded corner 16, the rounded corner 16 is more likely to be inserted into the circular groove 4, improving the smoothness of the insertion between the insertion rod 7 and the circular groove 4.

[0027] Referring to Figure 2 as shown, in this embodiment: the diameter of the insertion rod 7 is adapted to the inner wall of the circular groove 4. Through the adapted design of the insertion rod 7 and the circular groove 4, the insertion rod 7 and the circular groove 4 are closely attached after being inserted, reducing the gap between the insertion rod 7 and the circular groove 4, preventing the holding plate 5 from shaking after being moved and fixed, and causing deviation in the test position of the device.

[0028] Working principle: By the staff pulling down the grip 9 to drive the pull rod 8, the insertion rod 7 is disengaged from the circular groove 4. Then, after moving the holding plate 5 to the designated position on the top of the mounting plate 2, the grip 9 is released, so that the insertion rod 7 falls into the circular groove 4 at the designated position, enabling the holding plate 5 to freely adjust its position at the bottom of the pressing device 3 according to the actual needs of the staff, facilitating the staff to change the extrusion area of the test soil on the top of the holding plate 5, realizing the multi-directional extrusion test of the soil, increasing the accuracy and test efficiency of the soil CBR test. When the staff moves the position of the holding plate 5, the first slide plate 11 and the second slide plate 12 sliding in the long groove 10 limit the moving directions of the holding plate 5 in the front, back, left, and right directions, preventing the test objects placed on the top of the holding plate 5 from spilling when the holding plate 5 moves and tilts. When the staff pulls up the grip 9 to drive the pull rod 8 to disengage the insertion rod 7 from the circular groove 4, while the insertion rod 7 moves upward, it presses the spring 13 to store energy. When the staff releases the position restraint on the insertion rod 7, the spring 13 rebounds and pushes the insertion rod 7 to move downward, inserting the insertion rod 7 downward into the circular groove 4, thereby resetting the position of the insertion rod 7, facilitating the user to insert the insertion rod 7 into the circular groove 4 through the action of the spring 13. When the insertion rod 7 moves up and down, the sliding connection between the slider 15 and the chute 14 restricts the moving trajectory of the insertion rod 7, enabling the insertion rod 7 to only move vertically up and down, preventing the insertion rod 7 from tilting during movement and causing the insertion deviation between the insertion rod 7 and the circular groove 4. When the spring 13 operates, the spring 13 moves outside the pull rod 8, preventing the spring 13 from curling and winding with each other when rebounding, which affects the normal operation of the components, thereby improving the stability of the spring 13 operation. When the insertion rod 7 is inserted downward into the circular groove 4, the insertion rod 7 contacts the top of the circular groove 4. Through the smooth and rounded design of the fillet 16, the fillet 16 is more likely to be inserted into the circular groove 4, improving the smoothness of the insertion of the insertion rod 7 into the circular groove 4. Through the matching design of the insertion rod 7 and the circular groove 4, the insertion rod 7 and the circular groove 4 are closely fitted after being inserted, reducing the gap between the insertion rod 7 and the circular groove 4, preventing the holding plate 5 from shaking after moving and fixing, and causing deviation in the test position of the device.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An easily adjustable soil foundation on-site CBR measuring instrument, comprising a control cabinet (1), characterized in that: A mounting plate (2) is installed on the top of the control cabinet (1), a pressing device (3) is installed on the top of the mounting plate (2), a plurality of circular grooves (4) are opened on the top of the mounting plate (2), a containing plate (5) is arranged on the top of the mounting plate (2), both sides of the containing plate (5) are fixedly connected with a mounting shell (6), an inner wall of the mounting shell (6) is slidably connected with an insertion rod (7), the surface of the insertion rod (7) is plugged into the circular groove (4), the top of the insertion rod (7) is fixedly connected with a pull rod (8), and the top of the pull rod (8) is fixedly connected with a handle (9).

2. The soil foundation on-site CBR measuring instrument that is easy to adjust according to claim 1 is characterized in that: Two long grooves (10) are provided inside the containing plate (5), and a first slide plate (11) is slidably connected to the inner wall of the long groove (10), and the two ends of the first slide plate (11) are fixedly connected to the top of the mounting plate (2), and a second slide plate (12) is slidably connected to the inner wall of the long groove (10), and the two ends of the second slide plate (12) are fixedly connected to the two ends of the pressing device (3).

3. The soil foundation on-site CBR measuring instrument that is easy to adjust according to claim 1 is characterized in that: The top of the insertion rod (7) is fixedly connected to a spring (13), and the top end of the spring (13) is fixedly connected to the top of the inner wall of the mounting shell (6).

4. The easily adjustable soil foundation on-site CBR measuring instrument according to claim 1, characterized in that: Slide grooves (14) are provided on both sides of the inner wall of the installation shell (6), and sliders (15) are fixedly connected to both sides of the insertion rod (7), and the surface of the slider (15) is slidably connected to the inner wall of the slide groove (14).

5. The easily adjustable soil foundation on-site CBR measuring instrument according to claim 3 is characterized in that: The spring (13) is placed on the outside of the pull rod (8), and the inner wall of the spring (13) is slidably connected to the surface of the pull rod (8).

6. The easily adjustable soil foundation on-site CBR measuring instrument according to claim 1, characterized in that: The bottom of the insertion rod (7) is provided with a rounded corner (16).

7. The easily adjustable soil foundation on-site CBR measuring instrument according to claim 1, characterized in that: The diameter of the insertion rod (7) is matched with the inner wall of the circular groove (4).

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