Foldable quick-release triaxial cell

Abstract

This utility model discloses a foldable quick-release triaxial apparatus pressure chamber, including an axial pressure rod. Four pressure chamber sector plates are arranged at the bottom of the axial pressure rod, with two pressure chamber sector plates forming a group. Two pressure chamber sector plates in the same group are connected by three hinges. The bottom of all four pressure chamber sector plates is provided with a common base. Limiting blocks are fixedly connected to the outer walls of the top and bottom ends of the pressure chamber sector plates. Two limiting blocks at the same end have stops on their adjacent sides. A square plate is fixedly connected to one side of the stop, and two round rods are fixedly connected to the square plate on the side away from the stop. This utility model, through its foldable structure design, reduces the volume of the equipment during transportation or storage, making it easy to carry. The modular quick-release structure allows key components to be assembled or disassembled without manual operation via snaps and magnetic interfaces, lowering the barrier to entry and optimizing the complex installation steps of traditional triaxial testing instruments, thus shortening test preparation time.

Description

Technical Field

[0001] This utility model relates to the field of pressure chamber technology, and in particular to a foldable quick-release triaxial pressure chamber. Background Technology

[0002] Triaxial testing is a key piece of equipment used in geotechnical engineering, geomechanics, and other fields to determine the mechanical properties of materials such as soil and rock. By applying controllable confining pressure and axial load, it simulates real stress conditions to evaluate the shear strength, deformation characteristics, and permeability parameters of materials. It mainly consists of a pressure chamber, an axial loading system, a confining pressure control system, and a data acquisition system. It is widely used in civil engineering, geological exploration, energy development, and other fields.

[0003] Traditional triaxial testing equipment has a rigid, monolithic pressure chamber that cannot be folded. It requires complete disassembly for transport, and recalibration is necessary after reassembly. While portable improvements to traditional triaxial testing equipment use a modular frame, the pressure chamber remains a single, non-foldable unit, only disassembling into several large components, reducing volume by only 30%–40%. The pressure chamber is bolted in place, requiring tools for disassembly and reassembly, which is time-consuming and causes wear on the gaskets. Cleaning or replacing parts necessitates complete disassembly, impacting testing efficiency. Field operation is difficult, and the total installation time exceeds 30 minutes. Therefore, a foldable, quick-release triaxial pressure chamber is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a foldable, quick-release triaxial pressure chamber.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A foldable, quick-release triaxial pressure chamber includes an axial pressure rod. Four pressure chamber sector plates are located at the bottom of the axial pressure rod. Two sector plates are grouped together, and the two sector plates in the same group are connected by three hinges. A common base is provided at the bottom of all four sector plates. Limiting blocks are fixedly connected to the outer walls of both the top and bottom ends of each sector plate. Two limiting blocks at the same end have stops on their adjacent sides. A square plate is fixedly connected to one side of each stop. Two round rods are fixedly connected to the square plate on the side away from the stops. The two round rods are fitted with the same limiting plate and are slidably connected to it. A spring is fitted onto each round rod. The bottom limiting plate is fixedly connected to the top of the base, and the top limiting plate is fixedly connected to the bottom of the axial pressure rod. Due to the quick-release mechanism and the foldable pressure chamber, the sector plates can be positioned by moving the stops to the limiting plates. The device is assembled by restricting the movement of the pressure chamber. Removing the stop from the limiting plate releases the restriction, allowing for disassembly. The pressure chamber can be folded using a hinge, reducing its size. This effectively solves the problems raised in the background technology, where the traditional triaxial testing instrument's pressure chamber is a rigid, integral structure that cannot be folded, requiring complete disassembly for transport. While portable improvements to the traditional triaxial testing instrument use a split frame, the pressure chamber remains a non-foldable unit, only disassembling into several large components, reducing the volume by only 30%-40%. Furthermore, the pressure chamber is bolted, requiring tools for disassembly and assembly, which is time-consuming and causes wear on the gaskets. Cleaning or replacing parts requires complete disassembly, impacting testing efficiency. This device achieves a foldable structure design, reducing the size of the equipment during transport or storage, making it easy to carry. The modular quick-release structure allows key components to be assembled or disassembled without manual intervention using snap-fit ​​and magnetic interfaces, lowering the barrier to entry and optimizing the complex installation steps of the traditional triaxial testing instrument, thus shortening test preparation time.

[0006] As a further embodiment of this utility model, the bottom of the axial pressure rod is provided with a top cap, and the bottom of the top cap is provided with a permeable stone.

[0007] As a further embodiment of this utility model, a drain pipe and a pressurized water inlet pipe are provided on the base, and a valve is provided on the drain pipe.

[0008] As a further embodiment of this utility model, the top and bottom of the pressure chamber sector plate are fixedly connected with magnetic stainless steel, and a ring-shaped neodymium magnet array is provided on one side of the magnetic stainless steel. The two ring-shaped neodymium magnet arrays are respectively fixedly connected to the axial pressure rod and the base.

[0009] As a further embodiment of this utility model, the two round rods at the same end are fixedly connected to the same handle.

[0010] As a further embodiment of this utility model, positioning grooves are provided at the top and bottom of the pressure chamber sector plate, and positioning rods are provided in the positioning grooves on the pressure chamber sector plate. The positioning rod located at the top is fixedly connected to the bottom of the axial pressure rod, and the positioning rod located at the bottom is fixedly connected to the top of the base.

[0011] As a further embodiment of this utility model, double-lip sealing rings are fixedly connected to both sides of the pressure chamber sector plate.

[0012] The beneficial effects of this utility model are as follows: Thanks to the quick-release assembly mechanism and the foldable pressure chamber, the pressure chamber's sector plate can be positioned and assembled by moving the stop block to the limiting plate, and disassembled by removing the stop block from the limiting plate. The pressure chamber can be folded using a hinge, reducing its size. This effectively solves the problems raised in the background: traditional triaxial testing instruments have a rigid, integral pressure chamber that cannot be folded, requiring complete disassembly for transport. While portable improvements to traditional triaxial testing instruments use a modular frame, the pressure chamber remains a non-foldable unit, only disassembling into several large components, reducing volume by only 30%-40%. Furthermore, the pressure chamber is bolted, requiring tools for assembly and disassembly, which is time-consuming and causes wear on the gaskets. Cleaning or replacing parts requires complete disassembly, impacting testing efficiency. The foldable design reduces the equipment's size for transport and storage, making it easy to carry. The modular quick-release structure allows key components to be assembled or disassembled without manual intervention using snap-fit ​​and magnetic interfaces, lowering the barrier to entry and optimizing the complex installation steps of traditional triaxial testing instruments, thus shortening test preparation time. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a foldable quick-release triaxial pressure chamber proposed in this utility model; Figure 2 This is a partial structural schematic diagram of the pressure chamber of a foldable quick-release triaxial apparatus proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the pressure chamber sector plate of a foldable quick-release triaxial apparatus pressure chamber proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the stop block of the pressure chamber of a foldable quick-release triaxial apparatus proposed in this utility model; Figure 5 This is a schematic cross-sectional view of the limiting plate of the pressure chamber of a foldable quick-release triaxial apparatus proposed in this utility model. Figure 6 This is a front view schematic diagram of the pressure chamber of a foldable quick-release triaxial apparatus proposed in this utility model; Figure 7This is a schematic diagram of the hinge structure of a foldable quick-release triaxial pressure chamber proposed in this utility model.

[0014] In the diagram: 1. Axial pressure rod; 2. Top cap; 3. Pressure chamber sector plate; 4. Permeable stone; 5. Drain pipe; 6. Valve; 7. Pressure water inlet pipe; 8. Hinge; 9. Magnetic stainless steel; 10. Annular neodymium magnet array; 11. Limiting block; 12. Stop block; 13. Square plate; 14. Round rod; 15. Limiting plate; 16. Spring; 17. Handle; 18. Double-lip seal ring; 19. Positioning rod; 20. Base. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] Reference Figure 1 - Figure 7A foldable, quick-release triaxial apparatus pressure chamber includes an axial pressure rod 1. Four pressure chamber sector plates 3 are located at the bottom of the axial pressure rod 1. The pressure chamber sector plates 3 are precision cast from 6061-T6 aluminum alloy and have a hard anodized surface. Two pressure chamber sector plates 3 form a group, and the two pressure chamber sector plates 3 in the same group are connected by three hinges 8, which are embedded inside the pressure chamber sector plates 3. The bottom of all four pressure chamber sector plates 3 is provided with the same base 20. Limiters are fixedly connected to the top and bottom outer walls of the pressure chamber sector plates 3. Block 11, two limiting blocks 11 at the same end, each with a stop block 12 on its side close to each other. A square plate 13 is fixedly connected to one side of the stop block 12. Two round rods 14 are fixedly connected to the square plate 13 on the side away from the stop block 12. The two round rods 14 are fitted with the same limiting plate 15. The round rods 14 are slidably connected to the limiting plate 15. A spring 16 is fitted on the round rods 14. The limiting plate 15 at the bottom end is fixedly connected to the top of the base 20, and the limiting plate 15 at the top end is fixedly connected to the bottom of the axial pressure rod 1. Due to the use of a quick-release mechanism for assembly... The technology utilizes a foldable pressure chamber. Moving the stop block to the limiting plate restricts the position of the pressure chamber's sector plate for assembly, while removing the stop block from the limiting plate releases the restriction for disassembly. The pressure chamber can be folded using a hinge, reducing its size. This effectively solves the problems raised in the background: traditional triaxial testing instruments have a rigid, integral pressure chamber that cannot be folded, requiring complete disassembly for transport. While portable improvements to traditional triaxial testing instruments use a split frame, the pressure chamber remains a non-foldable unit, only disassembling into several large components, reducing volume by only 30%-40%. Furthermore, the pressure chamber is bolted, requiring tools for assembly and disassembly, which is time-consuming and causes wear on the gaskets. Cleaning or replacing parts requires complete disassembly, impacting testing efficiency. The foldable design reduces the equipment's size for transport and storage, making it easy to carry. The modular quick-release structure allows key components to be assembled or disassembled without manual intervention using snap-fit ​​and magnetic interfaces, lowering the barrier to entry and optimizing the complex installation steps of traditional triaxial testing instruments, thus shortening test preparation time.

[0018] In this embodiment, a top cap 2 is provided at the bottom of the axial pressure rod 1, and a permeable stone 4 is provided at the bottom of the top cap 2.

[0019] In this embodiment, a drain pipe 5 and a pressurized water inlet pipe 7 are installed on the base 20, and a valve 6 is installed on the drain pipe 5.

[0020] In this embodiment, magnetically conductive stainless steel 9 is fixedly connected to the top and bottom of the pressure chamber sector plate 3. A ring-shaped neodymium magnet array 10 is provided on one side of the magnetically conductive stainless steel 9. The two ring-shaped neodymium magnet arrays 10 are fixedly connected to the axial pressure rod 1 and the base 20, respectively.

[0021] In this embodiment, two round rods 14 at the same end are fixedly connected to the same handle 17, and the round rods 14 are moved by pulling the handle 17.

[0022] In this embodiment, positioning grooves are provided at the top and bottom of the pressure chamber sector plate 3. Positioning rods 19 are provided in the positioning grooves on the pressure chamber sector plate 3. The positioning rod 19 at the top is fixedly connected to the bottom of the axial pressure rod 1, and the positioning rod 19 at the bottom is fixedly connected to the top of the base 20. Through the cooperation of the positioning rods 19 and the positioning grooves, the position of the pressure chamber sector plate 3 is positioned to ensure that the position of the pressure chamber sector plate 3 is accurate.

[0023] In this embodiment, double-lip seals 18 are fixedly connected to both sides of the pressure chamber sector plate 3. By setting the double-lip seals 18, the airtightness of the pressure chamber after assembly is ensured, and pre-tightening force is provided when pressurized.

[0024] Working principle: During assembly, the pressure chamber sector plate 3 is positioned on the positioning rod 19, and the axial pressure rod 1 is placed on top of the pressure chamber sector plate 3. Pressing the pressure chamber sector plate 3 and the axial pressure rod 1 causes the limiting block 11 to press against the inclined surface of the stop block 12, causing the stop block 12 to move. The movement of the stop block 12 drives the square plate 13 to move, which in turn drives the round rod 14 to move. The round rod 14 moves along the limiting plate 15, while the square plate 13 compresses the spring 16, causing the spring 16 to contract. When the limiting block 11 passes the stop block 12, the contracted spring 16 extends, allowing the stop block 12 to move to one side of the limiting block 11. The position of the limiting block 11 can be restricted, thus limiting the position of the pressure chamber sector plate 3. The magnetic stainless steel 9 will attract the annular neodymium magnet array 10, providing initial adsorption force. The stop block 12 blocks one side of the limiting block 11 to form a secondary restriction, thus completing the assembly of the axial pressure rod 1, the pressure chamber sector plate 3, and the base 20. When disassembly is required, pull the handle 17 to move the stop block 12 away from one side of the limiting block 11, thus separating the pressure chamber sector plate 3 from the axial pressure rod 1 and the base 20. The two pressure chamber sector plates 3 in the same group can be folded with the hinge 8 as the center. After folding, the volume is reduced, making it easy to put into a toolbox for carrying.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foldable quick-release triaxial apparatus pressure chamber, comprising an axial pressure rod (1), characterized in that, The bottom of the axial pressure rod (1) is provided with four pressure chamber sector plates (3), two pressure chamber sector plates (3) form a group, and the two pressure chamber sector plates (3) in the same group are connected by three hinges (8). The bottom of the four pressure chamber sector plates (3) is provided with the same base (20). The top and bottom outer walls of the pressure chamber sector plates (3) are fixedly connected with limit blocks (11). The two limit blocks (11) at the same end are provided with a stop block (12) on the side that is close to each other. A square plate (13) is fixedly connected to one side of the stop block (12). Two round rods (14) are fixedly connected to the side of the square plate (13) away from the stop block (12). The two round rods (14) are fitted with the same limiting plate (15). The round rods (14) are slidably connected to the limiting plate (15). The round rods (14) are fitted with springs (16). The limiting plate (15) at the bottom end is fixedly connected to the top of the base (20). The limiting plate (15) at the top end is fixedly connected to the bottom of the axial pressure rod (1).

2. The foldable quick-release triaxial pressure chamber according to claim 1, characterized in that, The bottom of the axial pressure rod (1) is provided with a top cap (2), and the bottom of the top cap (2) is provided with a permeable stone (4).

3. The foldable quick-release triaxial pressure chamber according to claim 1, characterized in that, The base (20) is provided with a drain pipe (5) and a pressurized water inlet pipe (7), and a valve (6) is provided on the drain pipe (5).

4. The foldable quick-release triaxial pressure chamber according to claim 1, characterized in that, The top and bottom of the pressure chamber sector plate (3) are fixedly connected to magnetic stainless steel (9), and a ring neodymium magnet array (10) is provided on one side of the magnetic stainless steel (9). The two ring neodymium magnet arrays (10) are fixedly connected to the axial pressure rod (1) and the base (20) respectively.

5. The foldable quick-release triaxial pressure chamber according to claim 1, characterized in that, The two round rods (14) at the same end are fixedly connected to the same handle (17).

6. The foldable quick-release triaxial pressure chamber according to claim 5, characterized in that, The pressure chamber sector plate (3) has positioning grooves at both the top and bottom. A positioning rod (19) is provided in the positioning groove on the pressure chamber sector plate (3). The positioning rod (19) at the top is fixedly connected to the bottom of the axial pressure rod (1), and the positioning rod (19) at the bottom is fixedly connected to the top of the base (20).

7. A foldable quick-release triaxial pressure chamber according to claim 6, characterized in that, Both sides of the pressure chamber sector plate (3) are fixedly connected with double-lip seal rings (18).

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