Device for fixing compaction degree detection base plate in auxiliary sand filling method

Abstract

The utility model is applied to the technical field of civil engineering detection, and discloses a device for assisting in fixing a compaction degree detection base plate by a sand filling method, which comprises a central base plate, a central hole is formed in the center of the outer surface of the central base plate, and a rotary positioning base plate is mounted on the outer side surface of the central base plate; a guide groove is formed in the center of the outer surface of the positioning base plate, a rotating displacement rod is installed on the upper surface of the positioning base plate, a connecting block is fixedly connected to the end, away from the guide groove, of the displacement rod, and the connecting block is of a hexagonal columnar design. According to the device for assisting in fixing the sand filling method compactness detection base plate, the guide grooves in the outer side of the positioning base plate are connected with the fixing steel bars in an inserted mode, the lower ends of the fixing steel bars are conical, the fixing steel bars can be directly inserted into the ground to form stable supporting, and the inclined guide grooves are utilized to enable the fixing steel bars to form a certain angle with the ground; and the stability of fixing the central substrate and the anti-drawing performance in the subsequent use process are further improved.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering testing technology, specifically a device for fixing a substrate for sand filling compaction testing. Background Technology

[0002] In fields such as road engineering and foundation construction, the sand cone method is a commonly used testing method for determining compaction degree. The accuracy of its test results is crucial for the assessment of project quality. During the sand cone test, the fixation effect of the substrate directly affects the flow and filling state of the sand, thus determining the reliability of the test data.

[0003] Currently, when conducting sand filling tests, the traditional foot-stepping method relies on manpower, suffers from uneven pressure leading to sand leakage, is prone to displacement on loose ground, and requires a dedicated person to step on the sand throughout the process. It lacks accuracy and stability. For example, when using the traditional foot-stepping method to test compaction, the stability of manual pressure is poor, and the substrate is prone to shifting due to operator fatigue, which will affect the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a device for fixing the substrate in the sand-filling method compaction test, so as to solve the problems mentioned in the background art that the traditional foot-stepping method relies on manpower, uneven pressure, easy sand leakage, easy displacement on loose ground, and requires a dedicated person to operate the whole process, resulting in a lack of accuracy and stability in the test.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for fixing a substrate for sand filling compaction testing, comprising a central substrate, a central hole in the center of the outer surface of the central substrate, and a rotating positioning substrate mounted on the outer surface of the central substrate. A guide groove is formed in the center of the outer surface of the positioning substrate, and a fixing steel bar is inserted into the guide groove. A fixing plate is fixedly mounted on the upper surface of the positioning substrate, and a sliding rod is fixedly mounted on the outer surface of the fixing plate facing the guide groove. A sliding sliding plate is mounted on the outer surface of the sliding rod, and a pressing block is fixedly connected to the end of the sliding plate facing the guide groove. A rotating displacement rod is mounted on the upper surface of the positioning substrate, and a connecting block is fixedly connected to the end of the displacement rod away from the guide groove. The connecting block is a hexagonal columnar design.

[0006] A sliding frame is fixedly installed on the outer surface of one end of the positioning base plate where the fixing plate is located, and a sliding positioning rod is installed on the outer surface of the sliding frame. A connecting sleeve is engaged on the outer surface of the positioning rod, and a torsion bar is fixedly connected to the outer surface of the connecting sleeve.

[0007] Preferably, the guide groove is inclined, the lower end of the fixing steel bar is tapered, and the upper end of the fixing steel bar is a figure-9 handle-shaped design.

[0008] Using the above technical solution, the inclined guide groove allows the fixed steel bar to form a certain angle with the ground after being inserted into the ground, and the lateral friction of the soil is used to enhance the pull-out resistance. The tapered design at the lower end of the fixed steel bar facilitates quick insertion into the ground, while the figure-9 handle-like design at the upper end facilitates manual gripping and operation, improving the convenience of fixing and disassembling.

[0009] Preferably, the sliding plate and the displacement rod are threaded together, and the displacement rod and the fixed plate are clearance-fitted.

[0010] By adopting the above technical solution, the sliding plate can be driven to slide linearly along the sliding rod when the displacement rod is rotated through the threaded connection, thereby realizing the displacement control of the extrusion block. The clearance fit between the displacement rod and the fixed plate ensures that the displacement rod can rotate freely, while avoiding friction and jamming, thus ensuring the smoothness of the structural transmission.

[0011] Preferably, the extrusion blocks are symmetrically arranged on both sides of the guide groove, and the outer surface of one extrusion block is in contact with the outer surface of one end of the fixed steel bar handle-shaped design.

[0012] Using the above technical solution, the extrusion block can apply uniform extrusion force to the handle end of the fixed steel bar, loosening the interlocking state between the fixed steel bar and the soil, making it easier to pull out quickly later.

[0013] Preferably, the sliding frame has an arc-shaped design, and a T-shaped groove is provided on the side surface of the sliding frame, and the sliding frame and the displacement rod are concentrically arranged.

[0014] Using the above technical solution, the arc-shaped sliding frame and the displacement rod are set concentrically, which allows the positioning rod to drive the torsion rod to rotate along the arc-shaped trajectory, matching the rotation center of the displacement rod. The T-shaped slide groove provides sliding guidance for the positioning rod, ensuring the stability and flexibility of the torsion rod during rotation and avoiding swaying.

[0015] Preferably, the connecting sleeve is engaged with the connecting block, one end of the torsion bar is penetrated by the positioning rod, and the positioning rod and the torsion bar are slidably connected.

[0016] By adopting the above technical solution, the snap-fit ​​connection allows the torsion bar to drive the connecting block to rotate through the connecting sleeve, thereby driving the displacement bar. The sliding connection between the positioning rod and the torsion bar allows the torsion bar to move along the positioning rod axis during rotation, which facilitates disengagement or re-engagement with the connecting block and meets the requirements of continuous rotation operation.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the device for fixing the substrate of the auxiliary sand-filling method compaction test:

[0018] 1. The fixing steel bar is inserted and fixed through the guide groove on the outside of the positioning base plate. The lower end of the fixing steel bar is tapered and can be directly inserted into the ground to form a stable support. The inclined guide groove makes the fixing steel bar form a certain angle with the ground, which further improves the stability of fixing the central base plate and the pull-out resistance in subsequent use.

[0019] 2. The device uses a torsion bar, connecting sleeve and positioning rod to rotate the displacement rod by rotating the torsion bar, which in turn drives the sliding plate to slide along the sliding rod, thus realizing the displacement of the extrusion block. This allows the extrusion block to squeeze and loosen the fixed steel bar when it needs to be removed, making it easy to quickly pull out the fixed steel bar through the handle-shaped end of the fixed steel bar. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention in its stored state;

[0022] Figure 3 This is a three-dimensional structural diagram of the connection between the positioning base plate and the fixing steel bar of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the fixed plate, sliding rod, and sliding plate connection of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the connection between the positioning base plate and the guide groove of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the positioning rod and the torsion bar of this utility model.

[0026] In the diagram: 1. Central base plate; 2. Central hole; 3. Positioning base plate; 4. Guide groove; 5. Fixing steel bar; 6. Fixing plate; 7. Sliding rod; 8. Sliding plate; 9. Extrusion block; 10. Displacement rod; 11. Connecting block; 12. Sliding frame; 13. Positioning rod; 14. Connecting sleeve; 15. Torsion bar. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-6This utility model provides a technical solution: a device for fixing a substrate for assisting in the compaction test of sand filling method.

[0029] Example 1: This example discloses: a central base plate 1, a central hole 2 in the center of the outer surface of the central base plate 1, and a rotating positioning base plate 3 installed on the outer surface of the central base plate 1. A guide groove 4 is opened in the center of the outer surface of the positioning base plate 3, and a fixing steel bar 5 is inserted into the guide groove 4. A fixing plate 6 is fixedly installed on the upper surface of the positioning base plate 3, and a sliding rod 7 is fixedly installed on the outer surface of the fixing plate 6 facing the guide groove 4. A sliding sliding plate 8 is installed on the outer surface of the sliding rod 7, and a pressing block 9 is fixedly connected to one end of the sliding plate 8 facing the guide groove 4. A rotating displacement rod 10 is installed on the upper surface of the positioning base plate 3, and a connecting block 11 is fixedly connected to one end of the displacement rod 10 away from the guide groove 4. The connecting block 11 is a hexagonal columnar design.

[0030] The guide groove 4 is inclined, the lower end of the fixing steel bar 5 is tapered, and the upper end of the fixing steel bar 5 is a figure-9 handle-shaped design.

[0031] The sliding plate 8 and the displacement rod 10 are threaded together, and the displacement rod 10 and the fixed plate 6 are clearance fit.

[0032] The extrusion blocks 9 are symmetrically arranged on both sides of the guide groove 4, and the outer surface of one side of the extrusion block 9 is in contact with the outer surface of one end of the handle-shaped design of the fixed steel bar 5.

[0033] Place the central base plate 1 at the detection position so that the central hole 2 is aligned with the pit in the ground. Rotate the positioning base plate 3 to adjust it to a suitable angle so that the guide groove 4 is aligned with the insertion point in the ground. The lower end of the fixed steel bar 5 is conical and can be directly inserted into the ground along the inclined guide groove 4. Since the guide groove 4 is inclined, the fixed steel bar 5 forms a certain angle with the ground after insertion, and the lateral friction of the soil is used to enhance the pull-out resistance.

[0034] After the fixing steel bar 5 is inserted, its upper end has a "9"-shaped handle-like design exposed on the ground for easy operation. At this time, the positioning base plate 3 is connected to the ground through the fixing steel bar 5 to form a support point for the central base plate 1. The inclined guide groove 4 makes the force direction of the fixing steel bar 5 antagonize the possible displacement direction of the base plate. For example, when the base plate is subjected to lateral force, the fixing steel bar 5 can withstand greater shear force due to the inclined angle, thus preventing the base plate from shifting.

[0035] When it is necessary to pull out the fixed steel bar 5, the displacement rod 10 is rotated by the connecting block 11. The displacement rod 10 is connected to the sliding plate 8 by a thread, which causes the sliding plate 8 and the pressing block 9 to slide on the sliding rod 7 on one side of the fixed plate 6 towards the fixed steel bar 5 inserted in the guide groove 4, until the pressing block 9 presses the upper end of the fixed steel bar 5, causing the fixed steel bar 5 to be pulled out of the ground and loosened, so as to reduce the difficulty of pulling the fixed steel bar 5 manually or with the help of tools.

[0036] Example 2: This example discloses the following based on Example 1: A sliding frame 12 is fixedly provided on the outer surface of one end of the positioning base plate 3 where the fixing plate 6 is located, and a sliding positioning rod 13 is installed on the outer surface of the sliding frame 12. A connecting sleeve 14 is engaged on the outer surface of the positioning rod 13, and a torsion rod 15 is fixedly connected to the outer surface of the connecting sleeve 14.

[0037] The sliding frame 12 has an arc-shaped design, and a T-shaped groove is provided on the side surface of the sliding frame 12. The sliding frame 12 and the displacement rod 10 are concentrically arranged.

[0038] The connecting sleeve 14 is engaged with the connecting block 11, and one end of the torsion bar 15 is penetrated by the positioning rod 13, and the positioning rod 13 and the torsion bar 15 are slidably connected.

[0039] When it is necessary to rotate the connecting block 11, hold the torsion bar 15 and rotate the torsion bar 15. The torsion bar 15 rotates relative to the fixed plate 6 along the sliding frame 12 through the positioning rod 13, so as to drive the connecting block 11 to rotate through the connecting sleeve 14. After rotating to the position, slide the torsion bar 15 so that the connecting sleeve 14 and the torsion bar 15 slide off the positioning rod 13 and disengage from the connecting block 11. Then rotate the torsion bar 15 in the opposite direction and slide the torsion bar 15 so that the connecting sleeve 14 engages with the connecting block 11 again. By repeating the above process, the purpose of driving the connecting block 11 to rotate continuously in one direction can be achieved.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for fixing a substrate for assisting in sand filling method compaction degree testing, comprising a central substrate (1), wherein a central hole (2) is provided in the center of the outer surface of the central substrate (1), and a rotating positioning substrate (3) is mounted on the outer surface of the central substrate (1), characterized in that: The positioning base plate (3) has a guide groove (4) in the center of its outer surface, and a fixing steel bar (5) is inserted into the guide groove (4). A fixing plate (6) is fixedly installed on the upper surface of the positioning base plate (3), and a sliding rod (7) is fixedly installed on the outer surface of the fixing plate (6) facing the guide groove (4). A sliding sliding plate (8) is installed on the outer surface of the sliding rod (7), and a pressing block (9) is fixedly connected to one end of the sliding plate (8) facing the guide groove (4). A rotating displacement rod (10) is installed on the upper surface of the positioning base plate (3), and a connecting block (11) is fixedly connected to one end of the displacement rod (10) away from the guide groove (4). The connecting block (11) is a hexagonal columnar design.

2. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 1, characterized in that: A sliding frame (12) is fixedly provided on the outer surface of one end of the positioning base plate (3) where the fixed plate (6) is located, and a sliding positioning rod (13) is installed on the outer surface of the sliding frame (12). A connecting sleeve (14) is engaged on the outer surface of the positioning rod (13), and a torsion rod (15) is fixedly connected to the outer surface of the connecting sleeve (14).

3. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 1, characterized in that: The guide groove (4) is inclined, the lower end of the fixing steel bar (5) is tapered, and the upper end of the fixing steel bar (5) is a "9" shaped handle.

4. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 1, characterized in that: The sliding plate (8) and the displacement rod (10) are threaded together, and the displacement rod (10) and the fixed plate (6) are clearance fit.

5. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 1, characterized in that: The extrusion blocks (9) are symmetrically arranged on both sides of the guide groove (4), and the outer surface of one side of the extrusion block (9) is in contact with the outer surface of one end of the handle-shaped design of the fixed steel bar (5).

6. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 2, characterized in that: The sliding frame (12) is arc-shaped, and a T-shaped groove is provided on the side surface of the sliding frame (12). The sliding frame (12) and the displacement rod (10) are concentrically arranged.

7. The device for fixing a substrate for auxiliary sand-filling compaction testing according to claim 2, characterized in that: The connecting sleeve (14) is engaged with the connecting block (11), one end of the torsion bar (15) is penetrated by the positioning rod (13), and the positioning rod (13) is slidably connected with the torsion bar (15).

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