Roadbed filler sample testing device

Abstract

The utility model relates to a roadbed filler sample testing device which comprises a base, a pressing mechanism mounted at the upper end of the base, a displacement detection mechanism mounted at the upper end of the pressing mechanism, a placement groove formed in the upper end of the base, a groove formed in the bottom of the placement groove, sliding grooves symmetrically formed in the inner wall of the groove, a cavity formed in the bottom in the base, and threaded rods arranged in the sliding grooves. The lower end of the threaded rod penetrates through the upper end of the cavity and is provided with a first bevel gear, the outer surface of the threaded rod is sleeved with a threaded sleeve, vertical rods are installed at the upper end of the threaded sleeve, and supporting rings are installed at the upper ends of the two vertical rods. According to the utility model, a plurality of hollow placing plates and test pile casings are used according to the number of test samples, and compared with the conventional device which needs tedious operation, the device can quickly carry out multiple filler sample tests in actual construction, can realize mechanical and standardized test operation, improves the accuracy of detection tests, and reduces the construction cost. And meanwhile, the working efficiency of the detection test is also greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subgrade fillers, and particularly relates to a test device for subgrade filler specimens. Background Technique

[0002] The subgrade is the foundation of the track or road surface and is compacted by multiple layers of subgrade fillers. The subgrade bears the dynamic and static loads of the upper bearing objects. During subgrade construction, generally, the subgrade filler specimens are first tested, and construction is carried out after the test results meet the standards.

[0003] A Chinese patent discloses a subgrade filler compression detection device (authorization publication number CN 215374838 U). This patented technology can improve the drainage effect of the mounting plate and thus improve the accuracy of subgrade filler compression detection. However, in actual construction, multiple-layer detection tests are often required. When testing multiple specimens, after one specimen is tested, it and the internal filter paper and the interception bottom plate need to be taken out one by one, and then new specimens need to be laid and installed one by one for testing. The process is rather cumbersome, time-consuming and laborious, resulting in low detection test efficiency. Therefore, those skilled in the art have provided a test device for subgrade filler specimens to solve the problems raised in the above background technique. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a test device for subgrade filler specimens, which includes a base and a test cylinder. A downward pressing mechanism and a displacement detection mechanism are installed on the base. The displacement detection mechanism is installed at the upper end of the downward pressing mechanism. A circular groove and an annular placement groove are formed on the base. The placement groove is concentric with the groove and is located above the groove. Two sliding grooves are symmetrically formed on both sides inside the groove. A horizontal cavity is provided at the bottom of the base. A vertical threaded rod is arranged in the sliding groove above the cavity. The upper end of the threaded rod is rotatably connected to the top of the sliding groove. The lower ends of the two threaded rods respectively penetrate through the upper end of the cavity and are installed with bevel gears I. The threaded rod is threadedly connected with a threaded sleeve. A vertical rod is installed on the threaded sleeve. The upper ends of the two vertical rods are symmetrically connected to the lower part of a support ring;

[0005] A rotatable rotating rod is installed in the cavity. The left end of the horizontal rotating rod is connected with a motor for driving its rotation. The rotating rod is sleeved with two bevel gears II, and the two bevel gears II are respectively meshed with the two bevel gears I;

[0006] A pull-out collection box is arranged in the groove, and the collection box horizontally passes through one side of the base. The collection box is slidably connected with the base. The collection box is located below the support ring;

[0007] A hollow placement plate is placed on the placement groove. An annular groove for placing a test casing is provided on the circular hollow placement plate. A semi-sunken drain hole is provided at the center of the hollow placement plate, and a through leakage hole is provided in the drain hole. The collection frame is installed at the lower position of the leakage hole.

[0008] Preferably, the motor can drive the rotating rod and the second bevel gear to rotate, and drive the threaded rod through the first bevel gear. The support ring is driven to rise or fall by the threaded sleeve and the vertical rod, so that the hollow placement plate can rise out of or fall into the placement groove.

[0009] Preferably, the cross-section of the placement groove is stepped.

[0010] Preferably, the collection frame is equipped with a handle.

[0011] Preferably, a fixing ring is arranged around the hollow placement plate to improve the strength of the longitudinal support structure.

[0012] Preferably, there are more than two leakage holes, which can improve the leakage effect.

[0013] Preferably, the motor is connected to a DC power supply and a control device.

[0014] Preferably, there are several identical hollow placement plates and test casings.

[0015] The beneficial technical effects and advantages of the present utility model: The present utility model adopts a modular design, and multiple hollow placement plates and test casings can be used according to the number of test samples. A motor and a rotating rod are installed in the cavity of the device. The motor can drive the rotating rod and the second bevel gear to rotate, driving the support ring to rise or fall, so that the hollow placement plate can be quickly installed or replaced; when testing one sample, another sample is laid and installed. After the test work is completed, the tested sample is taken away, and another prepared sample is put into the placement groove to continue the test work. Compared with the existing device that requires cumbersome operations, in actual construction, this device can quickly conduct multiple filling sample tests. This device can realize mechanized and standardized test operations, improve the accuracy of sample tests, and also greatly improve the work efficiency of sample detection tests. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present application;

[0017] Figure 2 is the structural schematic diagram of the base of the present application;

[0018] Figure 3 is the structural schematic diagram of the collection frame of the present application;

[0019] Figure 4It is a schematic structural diagram of the hollow placement plate of this application.

[0020] Components in the figure: 1 - Base; 2 - Pressing mechanism; 3 - Displacement detection mechanism; 4 - Placement groove; 5 - Groove; 6 - Slide groove; 7 - Cavity; 8 - Threaded rod; 9 - First bevel gear; 10 - Threaded sleeve; 11 - Vertical rod; 12 - Support ring; 13 - Rotating rod; 14 - Second bevel gear; 15 - Motor; 16 - Collection box; 17 - Handle; 18 - Hollow placement plate; 19 - Annular groove; 20 - Fixed ring; 21 - Drain hole; 22 - Leakage hole; 23 - Test cylinder. Specific implementation mode

[0021] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0022] Please refer to Figures 1 to 4 , in this embodiment, a subgrade filler sample test device is provided, including a base 1 and a test cylinder 23. A pressing mechanism 2 and a displacement detection mechanism 3 are installed on the base 1. The displacement detection mechanism 3 is installed at the upper end of the pressing mechanism 2. A circular groove 5 and an annular placement groove 4 are opened on the base 1. The placement groove 4 is concentric with the groove 5 and is located on the groove 5. Two slide grooves 6 are symmetrically opened on both sides inside the groove 5. A horizontal cavity 7 is provided at the bottom of the base 1. A vertical threaded rod 8 is provided in the slide groove 6 above the cavity 7. The upper end of the threaded rod 8 is rotatably connected to the top of the slide groove 6. The lower ends of the two threaded rods 8 respectively penetrate the upper end of the cavity 7 and are installed with first bevel gears 9. The threaded rod 8 is threadedly connected with a threaded sleeve 10. A vertical rod 11 is installed on the threaded sleeve 10. The upper ends of the two vertical rods 11 are symmetrically connected to the lower part of a support ring 12;

[0023] A rotatable rotating rod 13 is installed in the cavity 7. The left end of the horizontal rotating rod 13 is connected with a motor 15 for driving its rotation. The rotating rod 13 is sleeved with two second bevel gears 14, and the two second bevel gears 14 are respectively meshed with the two first bevel gears 9;

[0024] A pull-out collection box 16 is provided in the groove 5, and the collection box 16 horizontally passes through one side of the base 1. The collection box 16 is slidably connected to the base 1. The collection box 16 is located below the support ring 12;

[0025] A hollow placement plate 18 is placed on the placement groove 4. An annular groove 19 for placing a test cylinder 23 is formed in the circular hollow placement plate 18. A semi-sunken drain hole 21 is formed at the center of the hollow placement plate 18, and a through leakage hole 22 is formed in the drain hole 21. The collection frame 16 is installed below the leakage hole 22.

[0026] In this embodiment, the cross-section of the placement groove 4 is stepped.

[0027] The collection frame 16 is provided with a handle 17.

[0028] A fixing ring 20 is arranged around the hollow placement plate 18 to improve the strength of the longitudinal support structure.

[0029] There are two or more leakage holes 22, which can improve the leakage effect.

[0030] The motor 15 is connected to a DC power supply and a control device.

[0031] There are several identical hollow placement plates 18 and test cylinders 23.

[0032] The implementation process and principle of the present utility model are as follows: The test cylinder 23 is placed into the annular groove 19, and the hollow placement plate 18 is placed into the placement groove 4. The fixing ring 20 provides a supporting force. The intercepting bottom plate is laid in the test cylinder 23, and then the filter paper is laid. The sample is placed in the test cylinder 23, and then a layer of filter paper is laid on the upper surface of the sample. Then the pressing flat plate is laid on the filter paper on the sample. The pressing plate presses the sample through the pressing flat plate for detection. The displacement detection mechanism 3 detects the displacement change of the sample. The water pressed out is convenient for later treatment.

[0033] During actual detection, one hollow placement plate 18 and test cylinder 23 are taken out, and materials and another sample are laid in the test cylinder 23 according to the above method. After one sample is detected, the motor 15 is controlled to work. The motor 15 drives the bevel gear two 14 to rotate through the rotating rod 13. The bevel gear two 14 meshes with the bevel gear one 9 to drive the threaded rod 8 to rotate. The threaded rod 8 drives the support ring 12 to rise through the threaded sleeve 10 and the vertical rod 11. The support ring 12 pushes the hollow placement plate 18 to rise out of the placement groove 4. Then, the hollow placement plate 18, the test cylinder 23, and the already detected sample are taken away, and the next test is carried out. Another prepared hollow placement plate 18 is taken out and placed into the placement groove 4, and the support ring 12 is driven to descend. The support ring 12 drives the moving hollow placement plate 18 to descend into the placement groove 4, and the test cylinder 23 containing a new sample is placed, and the test work continues. This device can quickly carry out multiple tests, and the device can realize mechanized and standardized operations, improve the accuracy of the sample test, and also greatly improve the working efficiency of the detection test.

[0034] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. A roadbed filler sample test device, comprising a base (1) and a test casing (23), wherein a pressing mechanism (2) and a displacement detection mechanism (3) are installed on the base (1), and the displacement detection mechanism (3) is installed on the upper end of the pressing mechanism (2), characterized in that: The base (1) is provided with a circular groove (5) and an annular placement groove (4), the placement groove (4) is concentric with the groove (5) and is located on the groove (5), two slide grooves (6) are symmetrically provided on both sides of the groove (5), a horizontal cavity (7) is provided at the bottom of the base (1), a vertical threaded rod (8) is provided in the slide groove (6) located above the cavity (7), the upper end of the threaded rod (8) is rotatably connected to the top of the slide groove (6), the lower ends of the two threaded rods (8) respectively penetrate the upper end of the cavity (7) and are installed with a bevel gear (9), the threaded rod (8) is threadedly connected with a threaded sleeve (10), the threaded sleeve (10) is installed with a vertical rod (11), and the upper ends of the two vertical rods (11) are symmetrically connected to the lower part of the support ring (12); A rotatable rotating rod (13) is installed in the cavity (7), and a motor (15) for driving the rotating rod (13) to rotate is connected to the left end of the lateral rotating rod (13). The rotating rod (13) is sleeved with two bevel gears (14), and the two bevel gears (14) are respectively meshed with the two bevel gears (9). A pull-out collection frame (16) is arranged in the groove (5), and the collection frame (16) passes through one side of the base (1) transversely, the collection frame (16) is slidably connected to the base (1), and the collection frame (16) is located below the support ring (12); A hollow placement plate (18) is placed on the placement groove (4), an annular groove (19) for placing a test casing (23) is provided on the circular hollow placement plate (18), a semi-sunken drainage hole (21) is provided at the center of the hollow placement plate (18), a penetrating water leakage hole (22) is provided in the drainage hole (21), and the collection frame (16) is installed below the water leakage hole (22).

2. A roadbed filler sample testing device according to claim 1, characterized in that: The placement groove (4) has a stepped cross section.

3. A roadbed filler sample testing device according to claim 1, characterized in that: The collecting frame (16) is provided with a handle (17).

4. A roadbed filler sample testing device according to claim 1, characterized in that: The hollow placement plate (18) is surrounded by a fixing ring (20).

5. A roadbed filler sample testing device according to claim 1, characterized in that: There are more than two water leakage holes (22).

6. A roadbed filler sample testing device according to claim 1, characterized in that: The motor (15) is connected to a DC power supply and a control device.

7. A roadbed filler sample testing device according to any one of claims 1 to 6, characterized in that: The hollow placement plate (18) and the test casing (23) include a plurality of the same ones.

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