Stone-filled roadbed porosity measuring base plate

Abstract

The utility model provides a rock-filled roadbed porosity measuring base disc which comprises a first base plate and a second base plate, one side of the first base plate is hinged to one side of the second base plate, semicircular notches are formed in the hinged sides of the first base plate and the second base plate, semicircular supporting rings are concentrically and fixedly arranged at the tops of the semicircular notches, and the semicircular supporting rings are fixedly arranged at the bottoms of the semicircular supporting rings. And a plug locking mechanism is arranged at the top between the first base plate and the second base plate. According to the utility model, the first substrate is hinged with the second substrate, so that the folding can be realized, the width is shortened by half after the folding, and the carrying and the use are convenient; during use, the first base plate and the second base plate are unfolded, the ends of the two semicircular supporting rings abut against each other, the first base plate and the second base plate are limited and are located on the same plane, and meanwhile the first base plate and the second base plate which are located on the same plane can be fixed through the plug locking mechanism; and the bottoms of the first substrate and the second substrate are fixed and flat and can be stably placed, so that the detection accuracy is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of roadbed construction technology, specifically relating to a base plate for measuring the porosity of rock-filled roadbeds. Background Technology

[0002] During the construction of rockfill subgrades, it is necessary to test the subgrade porosity (density) to ensure construction quality. Currently used subgrade porosity testing devices typically include the GSY-1 water-filling method test instrument, which has a collar. After the subgrade pit is excavated, the collar is placed around the pit and leveled using a level. A water bag is then placed into the pit through the center of the collar, and water is poured into the bag until the pit is full. The volume of the water is measured to obtain the volume of the pit. The density of the subgrade soil is then calculated based on the weight of the soil excavated from the pit.

[0003] Because rock-filled roadbeds often contain large-diameter stones, the test pits that need to be dug are generally large in diameter, and the required substrate size is also large, typically up to 1 meter wide, making it inconvenient to carry. In the prior art, Chinese utility model patent document with authorization announcement number CN208187928U discloses a portable test substrate for measuring the porosity of rock-filled roadbeds. It adopts a pull-out telescopic structure, which can reduce the width of the substrate by half when it is retracted. When in use, the auxiliary plates on both sides can be pulled out and unfolded, which can detect irregular test pits with a diameter of less than 0.64 m². It is easy to carry and convenient to use. However, because the movable plate is slidably set on top of the fixed plate, and the fixed plate has a certain thickness, there is a certain gap between the movable plate and the flat ground after it is pulled out. This results in poor stability, and it is easy for the tester to shake when standing on it. When water is poured until it is level with the substrate plane, it is easy to spill out, affecting the accuracy of the test.

[0004] Therefore, it is necessary to design a base plate for measuring the porosity of rock-filled roadbeds that has a flat bottom, can be placed stably, ensures the accuracy of the test, and is easy to carry and use, in order to solve the current technical problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, this utility model provides a base plate for measuring the porosity of stone-filled roadbeds, which has a high degree of flatness at the bottom, can be placed stably, ensures the accuracy of the test, and is convenient to carry and use.

[0006] The technical solution of this utility model is as follows: a base plate for measuring the porosity of a stone-filled roadbed, including a first base plate and a second base plate. The first base plate and the second base plate are hinged to one side. A semi-circular groove is provided on the hinged side of the first base plate and the second base plate. A semi-circular support ring is concentrically fixed at the top of the semi-circular groove. A bolt locking mechanism is provided at the top between the first base plate and the second base plate.

[0007] The bolt locking mechanism has a first slide cylinder and a second slide cylinder arranged along the same axis. The first slide cylinder is fixedly disposed on the top of the first substrate, and the second slide cylinder is fixedly disposed on the top of the second substrate. A bolt is slidably disposed inside the second slide cylinder.

[0008] A cone head is provided at one end of the plug near the first slide cylinder, and a push rod is provided at the other end of the plug. A stop block corresponding to the push rod is fixedly provided on the second base plate.

[0009] At least two magnetic fixing blocks are uniformly magnetically connected to the top of the first substrate and the second substrate.

[0010] The magnetic fixing block has a magnetic base, a magnet is fixedly embedded in the bottom of the magnetic base, a connecting rod is fixedly installed on the top of the magnetic base, and a handle is fixedly installed on the top of the connecting rod.

[0011] A level gauge is provided on the top of both the first substrate and the second substrate.

[0012] A support frame is fixedly provided on the top of the first substrate and the top edge of the second substrate.

[0013] The top two sides of the semi-circular support ring are rounded.

[0014] Both the first substrate and the second substrate have anti-slip pads fixedly installed on their bottoms.

[0015] The bottom of the first substrate and the second substrate, which are close to each other, are provided with grooves, and the interior of the grooves is provided with hinges for hinged connection between the first substrate and the second substrate.

[0016] The beneficial effects of this utility model are:

[0017] (1) In this utility model, the first substrate and the second substrate are hinged together so that they can be folded in half. After folding, the width is shortened by half, which makes it convenient to carry and use.

[0018] (2) When in use, unfold the first substrate and the second substrate, and the ends of the two semi-circular support rings abut against each other to limit the first substrate and the second substrate so that they are on the same plane. At the same time, the bolt locking mechanism can fix the first substrate and the second substrate on the same plane, keep the bottom of the first substrate and the second substrate fixed and flat, and can be placed stably to ensure the accuracy of the test. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the base plate for measuring the porosity of a rock-filled roadbed in this utility model.

[0020] Figure 2This is the second schematic diagram of the structure of the base plate for measuring the porosity of the stone-filled roadbed in this utility model.

[0021] Figure 3 This is a schematic diagram of the magnetic fixing block in this utility model. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figure 1 and 2 As shown, the porosity measuring base of the stone-filled roadbed includes a first base plate 1 and a second base plate 2. The first base plate 1 and the second base plate 2 are hinged on one side. A semi-circular groove 4 is provided on the hinged side of the first base plate 1 and the second base plate 2. A central hole is provided at the splicing point of the two semi-circular grooves 4. A semi-circular support ring 3 is concentrically fixed at the top of the semi-circular groove 4. The two semi-circular support rings 3 form a ring structure. A bolt locking mechanism 5 is provided at the top between the first base plate 1 and the second base plate 2. In this embodiment, the hinge between the first base plate 1 and the second base plate 2 allows them to be folded in half, reducing the width by half, which is convenient for carrying and use. When in use, the first base plate 1 and the second base plate 2 are unfolded, and the ends of the two semi-circular support rings 3 abut against each other, limiting the distance between the first base plate 1 and the second base plate 2 so that they are on the same plane. At the same time, the bolt locking mechanism 5 can fix the first base plate 1 and the second base plate 2 located on the same plane, keeping the bottom of the first base plate 1 and the second base plate 2 fixed and flat, so that they can be placed stably and ensuring the accuracy of the test.

[0025] In some embodiments, such as Figure 1As shown, the bolt locking mechanism 5 has a first slide cylinder 51 and a second slide cylinder 52 arranged along the same axis. The first slide cylinder 51 is fixedly disposed on the top of the first substrate 1, and the second slide cylinder 52 is fixedly disposed on the top of the second substrate 2. A bolt 55 is slidably disposed inside the second slide cylinder 52. The bolt 55 slides inside the second slide cylinder 52 so that one end of the bolt 55 can be inserted into the inside of the first slide cylinder 51 or pulled out from the inside of the first slide cylinder 51. When one end of the bolt 55 is inserted into the inside of the first slide cylinder 51, the first substrate 1 and the second substrate 2 can be fixed together to ensure that the bottom surfaces of the first substrate 1 and the second substrate 2 are flat.

[0026] In some embodiments, a cone head 53 is provided at one end of the plug 55 near the first slide cylinder, and a push rod 54 is provided at the other end of the plug 55. A stop block 56 corresponding to the push rod 54 is fixedly provided on the second base plate 2. The cone head 53 can facilitate the insertion of the end of the plug 55 into the interior of the first slide cylinder 51. The stop block 56 acts as a blocking and limiting function for the push rod 54, preventing the plug 55 from sliding out of the second slide cylinder 52.

[0027] In some embodiments, at least two magnetic fixing blocks 6 are uniformly magnetically connected to the top of the first substrate 1 and the second substrate 2. The magnetic fixing blocks 6 are used to magnetically fix the plastic film bag around its perimeter during the test. Specifically, the edges of the plastic film bag are pressed and fixed to the top of the first substrate 1 and the second substrate 2 by the magnetic fixing blocks 6.

[0028] In some embodiments, such as Figure 3 As shown, the magnetic fixing block 6 has a magnetic base 61, a magnet is fixedly embedded in the bottom of the magnetic base 61, a connecting rod 62 is fixedly provided on the top of the magnetic base 61, and a handle 63 is fixedly provided on the top of the connecting rod 62. The magnetic base 61 can be easily lifted to press or release the edge of the plastic film bag through the handle 63.

[0029] In some embodiments, a level 9 is provided on the top of both the first substrate 1 and the second substrate 2. By referring to the level 9, it can be observed whether the first substrate 1 and the second substrate 2 are in a horizontal state, so as to make adjustments accordingly.

[0030] In some embodiments, a support frame 32 is fixedly provided on the top of the first substrate 1 and the top edge of the second substrate 2, and the support frame 32 plays a role in reinforcing the edges of the first substrate 1 and the second substrate 2.

[0031] In some embodiments, the top two sides of the semicircular support ring 3 are provided with rounded corners 31.

[0032] In some embodiments, anti-slip pads 7 are fixedly provided on the bottom of both the first substrate 1 and the second substrate 2. The anti-slip pads 7 are rubber pads.

[0033] In some embodiments, a groove 81 is provided at the bottom of the side of the first substrate 1 and the second substrate 2 that are close to each other. A hinge 8 is provided inside the groove 81 for hinged connection between the first substrate 1 and the second substrate 2. The hinge 8 will not affect the flatness of the bottom of the first substrate 1 and the second substrate 2.

[0034] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0035] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A base plate for measuring the porosity of rock-filled roadbeds, characterized in that: The device includes a first substrate and a second substrate. The first substrate and the second substrate are hinged to one side. A semi-circular groove is provided on the hinged side of the first substrate and the second substrate. A semi-circular support ring is concentrically fixed at the top of the semi-circular groove. A bolt locking mechanism is provided at the top between the first substrate and the second substrate.

2. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: The bolt locking mechanism has a first slide cylinder and a second slide cylinder arranged along the same axis. The first slide cylinder is fixedly disposed on the top of the first substrate, and the second slide cylinder is fixedly disposed on the top of the second substrate. A bolt is slidably disposed inside the second slide cylinder.

3. The base plate for measuring the porosity of rock-filled roadbed according to claim 2, characterized in that: A cone head is provided at one end of the plug near the first slide cylinder, and a push rod is provided at the other end of the plug. A stop block corresponding to the push rod is fixedly provided on the second base plate.

4. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: At least two magnetic fixing blocks are uniformly magnetically connected to the top of the first substrate and the second substrate.

5. The base plate for measuring the porosity of rock-filled roadbed according to claim 4, characterized in that: The magnetic fixing block has a magnetic base, a magnet is fixedly embedded in the bottom of the magnetic base, a connecting rod is fixedly installed on the top of the magnetic base, and a handle is fixedly installed on the top of the connecting rod.

6. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: A level gauge is provided on the top of both the first substrate and the second substrate.

7. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: A support frame is fixedly provided on the top of the first substrate and the top edge of the second substrate.

8. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: The top two sides of the semi-circular support ring are rounded.

9. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: Both the first substrate and the second substrate have anti-slip pads fixedly installed on their bottoms.

10. The base plate for measuring the porosity of rock-filled roadbed according to claim 1, characterized in that: The bottom of the first substrate and the second substrate, which are close to each other, are provided with grooves, and the interior of the grooves is provided with hinges for hinged connection between the first substrate and the second substrate.

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