A device for measuring the volume of a pit in a gravel bed

The soft rubber pad and supporting frame structure of the gravel pit volume measuring device solve the problems of time-consuming, labor-intensive, and inaccurate traditional water-filling methods, enabling rapid and accurate volume measurement and improving project quality and road safety.

CN224480212UActive Publication Date: 2026-07-10ZHEJIANG INST OF HYDRAULICS & ESTUARY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG INST OF HYDRAULICS & ESTUARY
Filing Date
2025-07-07
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional water-filling methods for detecting the volume of pits in gravel are time-consuming, labor-intensive, and inaccurate. They are particularly problematic in remote projects where water sources cannot be readily available and the membrane is easily damaged, leading to large errors in the test results.

Method used

A gravel pit volume measuring device is used, which utilizes a soft rubber pad and a supporting frame structure to measure the pit volume by inflating it, and calculates the volume by using air pressure to reverse-squeeze the exhaust valve cap.

Benefits of technology

The simplified operation process improved the accuracy and efficiency of testing. The elasticity and self-adjustment ability of the rubber pad layer adapted to complex environments, reduced maintenance frequency, and improved project quality and road safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of measuring instruments, and discloses a device for measuring the volume of a gravel pit hole. In the application, a fixing base is welded to the upper surface of a bottom plate, a support framework is arranged on the side surface of the fixing base, a soft rubber pad layer is movably connected to the upper and lower surfaces of the support framework on the side surface of the fixing base, a support frame is movably connected to the upper surface of the fixing base, an inlet cover is welded to the side surface of the support frame, and an exhaust valve cap is movably connected to the outer surface of the inlet cover. The bottom plate is placed on a gravel pit hole, a reference hole is arranged to correspond to the gravel pit hole, the soft rubber pad layer is attached to the upper and lower surfaces of the support framework, the whole is inserted into the fixing base, the support frame is also inserted into the fixing base, air is filled through the air inlet interface, after the gravel pit hole is filled, the exhaust valve cap is lifted upward, the time is recorded through the inflation mechanism, and the volume of the corresponding pit hole is measured through calculation.
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Description

Technical Field

[0001] This application belongs to the field of measuring instrument technology, specifically a device for measuring the volume of gravel pits. Background Technology

[0002] Earthwork filling is a fundamental engineering project in many infrastructure constructions. In water conservancy projects, earthwork filling is an important component of the construction of dikes, reservoirs, and other structures. Proper earthwork filling quality can improve the flood control capacity of dikes and reduce the impact of natural disasters on human society. Projects such as the Baigou River management project (Zhuozhou section) and flood control and disaster relief projects in Heilongjiang Province demonstrate the important role of earthwork filling in flood prevention and disaster reduction. In the construction of transportation infrastructure such as roads, airports, and ports, earthwork filling forms the foundation for important components such as roadbeds, runways, and ports. Precise earthwork filling ensures the smoothness and unobstructed flow of roads, playing a crucial role in improving transportation efficiency. Gravel filling is a major component of earthwork filling.

[0003] The quality of gravel filling is typically tested using the water filling method. This method involves first excavating a pit to a certain depth at a point on the fill surface, and then measuring the mass of the excavated soil, denoted as G1. A thin film is then placed over the pit, as close to the pit wall as possible, and water is poured into the pit until the water level is the same as the original soil level. Once the pit is full, the water meter reading is recorded. The volume of water in the pit at this point is calculated as V1. V1 represents the volume occupied by the excavated soil. Based on the weight of the soil in the pit, the volume of the pit, and some properties of the disturbed soil (the soil in the pit volume), the compaction degree or relative density of the earthwork is calculated. Because weighing the soil is relatively accurate, the rapid and accurate measurement of the pit volume is crucial in this process.

[0004] However, some projects are located in remote areas inaccessible by road, making it inconvenient to transport water. Furthermore, traditional testing methods require covering the pit with a membrane and filling it with water, which is easily torn by sharp stones on the pit walls, causing water to leak out and leading to significant errors in the test. This method of covering the pit with a membrane, filling it with water, and then checking the water meter reading is time-consuming, labor-intensive, and inaccurate. Utility Model Content

[0005] The purpose of this application is to provide a device for measuring the volume of gravel pits, in order to solve the problems mentioned above, which are limited by the need to carry a water source, are time-consuming and labor-intensive, and have low detection accuracy.

[0006] The technical solution adopted in this application is as follows: a measuring device for the volume of gravel pits, including a base plate, a fixed seat welded to the upper surface of the base plate, a support frame provided on the side surface of the fixed seat, a soft rubber pad layer movably connected to the upper and lower surfaces of the support frame corresponding to the side surface of the fixed seat, a support frame movably connected to the upper surface of the fixed seat, an inlet cover welded to the side surface of the support frame, and an exhaust valve cap movably connected to the outer surface of the inlet cover.

[0007] By adopting the above technical solution, the base plate is placed on the gravel pit, the reference hole corresponds to the gravel pit, soft rubber pads are attached to the top and bottom of the support frame, and the whole thing is inserted into the fixed seat. The support frame is also inserted into the fixed seat. Air is inflated through the air inlet. After the gravel pit is filled, the exhaust valve cap is lifted upward. By recording the time and passing through the air inflation machine, the corresponding pit volume is measured by calculation.

[0008] In a preferred embodiment, a fixing knob is movably connected to the outer surface of the fixing base, and a clamping plate is provided on the outer surface of the fixing knob.

[0009] By adopting the above technical solution, soft rubber pads are attached to the top and bottom of the support frame, and the whole thing is inserted into the clamp. It is then fixed by rotating the fixing knob, thus fixing the soft rubber pads and support frame on one side. This allows the soft rubber pads and support frame to be inserted elsewhere, preventing them from being blown away.

[0010] In a preferred embodiment, the base plate is welded with a reference hole on the outer surface of the inlet cover, and the upper surface of the inlet cover is welded with an air inlet port.

[0011] By adopting the above technical solutions, the reference hole and air inlet interface ensure the air blowing effect of the equipment and guarantee the overall measurement results of the device.

[0012] In a preferred embodiment, the support frame includes an outer fixing frame and a wind resistance body, the inner surface of the outer fixing frame is provided with a fixing rod, and the outer surface of the outer fixing frame is provided with fixing screws.

[0013] By adopting the above technical solution, the external fixing frame ensures the external stability of the support frame and avoids disintegration. The wind resistance body ensures stable force during air blowing and also ensures good deformation. The fixing rods are inserted into each other and fixed by inserting a movable rod in the middle. When expansion is needed, they are inserted again to ensure the corresponding measurement needs. The fixing screws are rotated through the bidirectional connecting block and the part of the fixing rod inserted into the external fixing frame to complete the size adjustment of the support frame.

[0014] In a preferred embodiment, a bidirectional connecting block is movably connected to the inner surface of the fixed rod, and the bidirectional connecting block is movably connected to the outer fixed frame away from the outer surface of the fixed rod.

[0015] By adopting the above technical solution, the bidirectional connecting block completes the fixation of the other side of the fixing rod at the outer fixing frame.

[0016] In a preferred embodiment, a stable outer frame is provided on the outer surface of the wind resistance body, and connecting sleeves are movably connected between the outer surfaces of the wind resistance bodies.

[0017] By adopting the above technical solution, the stable outer frame ensures the deformation of each position between the main body of the wind resistance, thereby better adhering to the surface of the gravel pit, and the connecting sleeve facilitates the rotation between the main bodies of the wind resistance, thus achieving the adhering effect.

[0018] In a preferred embodiment, a rubber connecting piece is movably connected to the inner surface of the stabilizing outer frame, and an auxiliary displacement plate is movably connected to the inner surface of the rubber connecting piece.

[0019] By adopting the above technical solution, the auxiliary displacement plate facilitates smaller displacements, and the rubber connecting piece ensures the connection effect between the auxiliary displacement plate and the wind resistance body.

[0020] In a preferred embodiment, a movable rod is fixedly connected to the outer surface of the auxiliary displacement plate, and a three-way support frame is movably connected to the outer surface of the movable rod.

[0021] By adopting the above technical solution, the movable rod can move linearly between the three-way support frame, and the deformation effect of the support frame is achieved by stabilizing the outer frame, connecting sleeve, and rubber connecting piece.

[0022] In a preferred embodiment, a protrusion is fixedly connected to the side surface of the wind resistance body, and the outer surface of the protrusion is disposed on the side surface of the three-way support frame.

[0023] By adopting the above technical solution, the protrusion also facilitates the rotation of the corresponding sides between the wind resistance body and the auxiliary displacement plate.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0025] 1. By turning on the air pump, the soft rubber pad and support frame are injected into the gravel pit. After the pit is completely filled, the air pressure is reversed from the gravel pit to lift the exhaust valve cap. The pit volume is calculated by calculating the time from when the air pump is turned on to when the exhaust valve cap is lifted, and by calculating the air pump's inflation power. The operation is simple.

[0026] 2. The flexible rubber pad layer possesses excellent ductility, enabling it to adapt to various complex construction environments and self-adjust and extend under diverse conditions. This characteristic helps to better conform to and cover uneven road surfaces, effectively filling gaps caused by hidden potholes. Secondly, due to its excellent self-extending detection capability, it can detect tiny potholes or cracks during continuous extension, avoiding omissions that may occur with traditional detection methods. This intelligent material significantly improves detection accuracy, preventing potential threats to road safety and vehicle operation caused by undetected potholes. Furthermore, the strong detection capabilities of the flexible rubber pad layer and its supporting framework are also reflected in its fatigue resistance. During long-term operation, they can continue to work while maintaining the stability of their physical properties and detection accuracy. This not only reduces the frequency of maintenance and replacement but also greatly improves the durability and service life of the project. In conclusion, this flexible rubber pad layer and its supporting framework not only demonstrate excellent detection performance in engineering practice but also make significant contributions to improving project quality and ensuring road safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall shape of the equipment in this application;

[0028] Figure 2 This is a disassembled schematic diagram of the overall structure of the equipment in this application;

[0029] Figure 3 This is a schematic diagram of the supporting skeleton structure fixing structure in this application;

[0030] Figure 4 This is a schematic diagram illustrating the connection effect of the supporting skeleton structure in this application;

[0031] Figure 5 This is a schematic diagram showing the disassembly of the supporting skeleton structure in this application;

[0032] Figure 6 This is a schematic diagram of the main components of the supporting skeleton structure in this application.

[0033] The markings in the diagram are: 1. Base plate; 2. Fixing seat; 3. Delivery pipe; 4. Soft rubber pad; 5. Support frame; 6. Support frame; 7. Inlet cover; 8. Exhaust valve cap; 9. Air pump; 10. Clamping plate; 11. Fixing knob; 12. Reference hole; 13. Air inlet; 14. External fixing frame; 15. Wind resistance body; 16. Two-way connecting block; 17. Fixing rod; 18. Fixing screw; 19. Stabilizing outer frame; 20. Connecting sleeve; 21. Rubber connecting piece; 22. Auxiliary displacement plate; 23. Movable rod; 24. Three-way support frame; 25. Protrusion block. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example

[0035] Reference Figure 1-2 A device for measuring the volume of gravel pits includes a base plate 1, a fixed seat 2 welded to the upper surface of the base plate 1, a support frame 5 provided on the side surface of the fixed seat 2, a soft rubber pad 4 movably connected to the upper and lower surfaces of the side surface of the fixed seat 2 corresponding to the support frame 5, a support frame 6 movably connected to the upper surface of the fixed seat 2, an inlet cover 7 welded to the side surface of the support frame 6, and an exhaust valve cap 8 movably connected to the outer surface of the inlet cover 7.

[0036] Place the base plate 1 on the gravel pit, with the reference hole 12 corresponding to the gravel pit. Attach soft rubber pads 4 to the top and bottom of the support frame 5, and insert the whole into the fixing seat 2. The support frame 6 is also inserted into the fixing seat 2. Inflate through the air inlet 13. After the gravel pit is filled, the exhaust valve cap 8 is lifted upward. By recording the time and passing through the inflation mechanism, the corresponding pit volume is measured by calculation.

[0037] Reference Figure 1-2 A fixing knob 11 is movably connected to the outer surface of the fixing base 2, and a clamping plate 10 is provided on the outer surface of the fixing knob 11.

[0038] Soft rubber pads 4 are attached to the top and bottom of the support frame 5, and the whole assembly is inserted into the clamp 10. It is then fixed by rotating the fixing knob 11, thus fixing the soft rubber pads 4 and the support frame 5 on one side. This allows the soft rubber pads 4 and the support frame 5 to be inserted elsewhere, preventing them from being blown away.

[0039] Reference Figure 1-2 The base plate 1 has a reference hole 12 welded to the outer surface of the inlet cover 7, and the upper surface of the inlet cover 7 has an air inlet interface 13 welded to it.

[0040] The reference hole 12 and the air inlet 13 ensure the effectiveness of the air blowing of the equipment and guarantee the overall measurement results of the device.

[0041] Reference Figure 3-6 The support frame 5 includes an outer fixing frame 14 and a wind resistance body 15. The inner surface of the outer fixing frame 14 is provided with a fixing rod 17, and the outer surface of the outer fixing frame 14 is provided with fixing screws 18.

[0042] The outer fixing frame 14 ensures the external stability of the support frame 5 and prevents disintegration. The wind resistance body 15 ensures stable force during air blowing and also ensures good deformation. The fixing rods 17 are inserted into each other and fixed by the middle insertion movable rod 23. When expansion is needed, they are inserted again to ensure the corresponding measurement needs. The fixing screw 18 completes the size adjustment of the support frame 5 by rotating through the bidirectional connecting block 16 and the part of the fixing rod 17 inserted into the outer fixing frame 14.

[0043] Reference Figure 3-6 A bidirectional connecting block 16 is movably connected to the inner surface of the fixed rod 17, and the bidirectional connecting block 16 is movably connected to the outer fixed frame 14 away from the outer surface of the fixed rod 17.

[0044] The bidirectional connecting block 16 completes the fixation of the other side of the fixing rod 17 at the outer fixing frame 14.

[0045] Reference Figure 3-6 A stabilizing outer frame 19 is provided on the outer surface of the wind resistance body 15, and a connecting sleeve 20 is movably connected between the outer surfaces of the wind resistance bodies 15.

[0046] The stabilizing outer frame 19 ensures the deformation of each position between the wind resistance body 15, thereby better adhering to the surface of the gravel pit, and the connecting sleeve 20 facilitates the rotation between the wind resistance body 15 to achieve the adhering effect.

[0047] Reference Figure 3-6 A rubber connecting piece 21 is movably connected to the inner surface of the stable outer frame 19, and an auxiliary displacement plate 22 is movably connected to the inner surface of the rubber connecting piece 21.

[0048] The auxiliary displacement plate 22 facilitates smaller displacements, and the rubber connecting piece 21 ensures the connection between the auxiliary displacement plate 22 and the wind resistance body 15.

[0049] Reference Figure 3-6 A movable rod 23 is fixedly connected to the outer surface of the auxiliary displacement plate 22, and a three-way support frame 24 is movably connected to the outer surface of the movable rod 23.

[0050] The movable rod 23 can move linearly between the three-way support frame 24, and the deformation effect of the support frame 5 is achieved through the stabilizing outer frame 19, connecting sleeve 20, and rubber connecting piece 21.

[0051] Reference Figure 3-6 A protrusion 25 is fixedly connected to the side surface of the wind resistance body 15, and the outer surface of the protrusion 25 is set on the side surface of the three-way support frame 24.

[0052] The protrusion 25 also facilitates the rotation of the corresponding sides between the wind resistance body 15 and the auxiliary displacement plate 22.

[0053] The implementation principle of the embodiment of the measuring device for the volume of gravel pits in this application is as follows:

[0054] 1. Level the area around the gravel pit to ensure a smooth surface. If this is not possible, place a soft material such as a rubber layer on the outside to ensure a tight seal. Then place the base plate 1 on the gravel pit, with the reference hole 12 corresponding to the gravel pit.

[0055] 2. The fixed rods 17 are inserted into each other and fixed by the middle inserted movable rod 23. When expansion is needed, continue to insert to ensure the corresponding measurement needs are met.

[0056] 3. After adjusting the support frame 5 to the specified dimensions, attach soft rubber pads 4 to the top and bottom of the support frame 5, insert the entire frame into the clamping plate 10, and fix it in place by rotating the fixing knob 11.

[0057] 4. The support frame 6 is inserted into the fixed seat 2, and the delivery pipe 3 is inserted into the air inlet 13. By turning on the air pump 9, the soft rubber pad 4 and the support frame 5 are injected into the gravel pit as a whole. After the pit is completely filled, the air pressure is squeezed in the opposite direction from the gravel pit, which lifts the exhaust valve cap 8. The pit volume is calculated by calculating the start time when the air pump 9 is turned on and the end time when the exhaust valve cap 8 is lifted, and by calculating the air power of the air pump 9.

[0058] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A device for measuring the volume of gravel pits, comprising a base plate (1), characterized in that: A fixed seat (2) is welded to the upper surface of the base plate (1). A support frame (5) is provided on the side surface of the fixed seat (2). A soft rubber pad (4) is movably connected to the upper and lower surfaces of the support frame (5) on the side surface of the fixed seat (2). A support frame (6) is movably connected to the upper surface of the fixed seat (2). An inlet cover (7) is welded to the side surface of the support frame (6). An exhaust valve cap (8) is movably connected to the outer surface of the inlet cover (7).

2. The device for measuring the volume of gravel pits as described in claim 1, characterized in that: The outer surface of the fixed base (2) is movably connected to a fixed knob (11), and the outer surface of the fixed knob (11) is provided with a clamp (10).

3. The device for measuring the volume of gravel pits as described in claim 1, characterized in that: The base plate (1) has a reference hole (12) welded to the outer surface of the inlet cover (7), and the upper surface of the inlet cover (7) has an air inlet (13) welded to it.

4. The device for measuring the volume of gravel pits as described in claim 1, characterized in that: The support frame (5) includes an outer fixing frame (14) and a wind resistance body (15). The inner surface of the outer fixing frame (14) is provided with a fixing rod (17), and the outer surface of the outer fixing frame (14) is provided with a fixing screw (18).

5. The device for measuring the volume of gravel pits as described in claim 4, characterized in that: The inner surface of the fixed rod (17) is movably connected to a bidirectional connecting block (16), and the outer surface of the bidirectional connecting block (16) away from the fixed rod (17) is movably connected to an outer fixed frame (14).

6. The device for measuring the volume of gravel pits as described in claim 4, characterized in that: The outer surface of the wind resistance body (15) is provided with a stable outer frame (19), and the outer surfaces of the wind resistance bodies (15) are movably connected by connecting sleeves (20).

7. The device for measuring the volume of gravel pits as described in claim 6, characterized in that: A rubber connecting piece (21) is movably connected to the inner surface of the stable outer frame (19), and an auxiliary displacement plate (22) is movably connected to the inner surface of the rubber connecting piece (21).

8. The device for measuring the volume of gravel pits as described in claim 7, characterized in that: The auxiliary displacement plate (22) is fixedly connected to a movable rod (23) on its outer surface, and a three-way support frame (24) is movably connected to the outer surface of the movable rod (23).

9. The device for measuring the volume of gravel pits as described in claim 8, characterized in that: The wind resistance body (15) has a protrusion (25) fixedly connected to its side surface, and the outer surface of the protrusion (25) is set on the side surface of the three-way support frame (24).