High-efficiency and high-adaptation shield tunneling machine sealing test device

Abstract

The utility model discloses a high-efficiency and high-adaptation shield tunneling machine sealing test device, which comprises a fixed frame and a movable frame, and the movable frame is in sliding fit with the fixed frame; the rotating frame is rotationally matched with the fixed frame; the mounting ring comprises a fixed mounting ring and a rotary mounting ring, the fixed mounting ring is fixedly connected with the movable frame, the rotary mounting ring is fixedly connected with the rotary frame, a first test cavity is arranged between the fixed mounting ring and the rotary mounting ring, and a second test cavity is arranged between the rotary frame and the fixed frame. A radial channel is arranged in the mounting ring, an axial channel is arranged in the fixing frame, the radial channel is connected with the first testing cavity, and the axial channel is connected with the second testing cavity. A lead screw sliding rail system is arranged on the fixed frame, and the movable frame is installed on the lead screw sliding rail system. An internal tooth slewing bearing is arranged between the fixed frame and the rotating frame, the internal tooth slewing bearing is meshed with a belt output gear speed reducer, and the belt output gear speed reducer is connected with an asynchronous motor. The problems that an existing sealing test bench is inconvenient to use and low in efficiency are solved.

Description

Technical Field

[0001] This utility model relates to the field of shield machine main drive sealing performance testing, specifically a high-efficiency and highly adaptable shield machine sealing testing device. Background Technology

[0002] In the field of tunnel boring machine (TBM) engineering, TBMs, as specialized engineering machinery for tunnel excavation, are widely used in underground engineering construction such as subways, municipal works, railways, highways, water conservancy, and mines. During the excavation process, TBMs face various geological formations such as hard rock, sand, and clay. Their key components, the main drive and the shield body, require sealing to ensure reliable operation. The main drive needs to be sealed internally to block the oil in the gearbox and externally to block excavation debris, preventing impurities such as debris and mud from entering the gearbox. The shield body hinges need to be sealed to prevent external mud and sand from entering the shield body and damaging internal components. TBM equipment involves a large investment; if a key component, the main drive or the shield body, malfunctions, severe problems may require excavating a shaft for repair, resulting in significant economic losses and adverse social impacts. Therefore, the reliability, safety, and lifespan of the seals are crucial. Thus, it is essential to conduct reliability and lifespan tests on the seals in simulated real-world environments during the initial research and development phase, design process, prototype testing, and maintenance / replacement stages.

[0003] The commonly used seals for tunnel boring machines are four-finger seals and VD seals. The materials are generally polyurethane or rubber. They are usually annular seals, and the direction is generally axial or radial, and they can be distinguished by their front and back sides.

[0004] Existing tunnel boring machine sealing test benches cannot meet the actual testing requirements. For example, the test benches provided by sealing manufacturers are generally used to test samples that are scaled up proportionally. Even test benches that reproduce the sealing size 1:1 only test a single diameter and test the sealing performance of a fixed size. When actual products have different diameter requirements, they cannot be tested quickly and directly. It is necessary to replace the entire test bench or multiple parts, resulting in high production and time costs and low adaptability. Utility Model Content

[0005] The purpose of this invention is to provide a highly efficient and adaptable shield machine sealing test device to solve the problems of inconvenience and low efficiency of existing sealing test benches.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency and highly adaptable shield tunneling machine sealing test device, comprising:

[0007] A fixed frame and a movable frame, wherein the movable frame is slidably engaged with the fixed frame;

[0008] The rotating frame rotates in conjunction with the fixed frame.

[0009] The mounting ring includes a fixed mounting ring and a rotating mounting ring. The fixed mounting ring is fixedly connected to the movable frame, and the rotating mounting ring is fixedly connected to the rotating frame. A first test cavity is provided between the fixed mounting ring and the rotating mounting ring, and a second test cavity is provided between the rotating frame and the fixed frame.

[0010] As a further improvement to the above technical solution:

[0011] The mounting ring has a radial channel, and the fixing frame has an axial channel. The radial channel is connected to the first test cavity, and the axial channel is connected to the second test cavity.

[0012] The fixed frame is equipped with a screw and slide rail system, and the movable frame is mounted on the screw and slide rail system.

[0013] An internal gear slewing bearing is provided between the fixed frame and the rotating frame. The internal gear slewing bearing is engaged with a reducer with an output gear, and the reducer with an output gear is connected to an asynchronous motor.

[0014] Temperature sensors are installed on the mounting ring and the fixing bracket.

[0015] The radial and axial channels are connected to a test workstation.

[0016] The fixed frame has a rotation center in the middle, and the reducer with output gear is arranged around the rotation center.

[0017] The test workstation is connected to a flow meter, a pressure regulating valve with pressure display, and a ball valve. The ball valve allows individual control of each pipeline, thereby controlling the opening and closing of each sealed chamber. The pressure regulating valve with pressure display controls the pressure of each sealed chamber. The flow meter monitors the flow rate of the injected gas, liquid, and grease, and the temperature sensor monitors the sealing temperature.

[0018] It also includes a host computer, which is connected to the test workstation, asynchronous motor, pressure regulating valve with pressure display, temperature sensor and lead screw and slide rail system.

[0019] O-rings are provided on both sides of the mounting ring. The movable frame and the rotating frame are provided with mounting grooves, through which the mounting ring is placed, and the O-rings are used to form a sealing structure.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model provides a highly efficient and adaptable shield tunneling machine sealing test device that can simulate real-world environments to perform performance and life tests on seals. It can quickly test sealing products that require testing and simultaneously meet the testing needs of seals with different diameters, specifications, and materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the mounting ring of this utility model;

[0024] Figure 3 This is a side view of the rotating frame structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the separate structure of the movable frame and the rotating frame of this utility model;

[0026] Figure 5 This is a schematic diagram of the mounting ring assembly structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of a single test unit of this utility model;

[0028] Figure 7 This is a schematic diagram of the screw and guide rail system of this utility model.

[0029] Reference numerals: 1. Moving frame; 2. Mounting ring; 3. Sealing ring to be tested; 5. Rotating frame; 6. Fixed frame; 7. Internal gear slewing bearing; 8. Ball valve; 9. Pressure regulating valve with pressure display; 10. Flow meter; 11. Gear reducer with output; 12. Rotation center; 13. Asynchronous motor; 14. Screw and slide rail system; 15. Test workstation; 16. Host computer; 19. Temperature sensor; 20. O-ring seal; 21. Pressure plate screw; 22. Mounting ring screw; 23. External pipeline; 41. Radial sealing pressure plate; 42. Axial sealing pressure plate; 2.1, First installation... 141. Mounting ring; 2.2. Second mounting ring; 2.3. Third mounting ring; 2.4. Fourth mounting ring; 2.5. Fifth mounting ring; 2.6. Sixth mounting ring; 2.7. Seventh mounting ring; 2.8. Eighth mounting ring; 2.9. Ninth mounting ring; 2.10. Tenth mounting ring; 3.1. VD sealing ring; 3.2. Radial finger sealing ring; 3.3. Axial finger sealing ring; 141. Servo motor; 142. Coupling; 143. Bearing housing; 144. Positioning block; 145. Nut connecting seat; 146. Slider base; 147. Guide rail; 148. Lead screw. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] 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.

[0034] like Figures 1 to 5 As shown, the high-efficiency and highly adaptable shield machine sealing test device of this embodiment includes:

[0035] The fixed frame 6 and the movable frame 1 are slidably fitted together; the fixed frame 6 is provided with a screw and slide rail system 14, and the movable frame 1 is installed on the screw and slide rail system 14.

[0036] The rotating frame 5 is rotatably engaged with the fixed frame 6; an internal gear slewing bearing 7 is provided between the fixed frame 6 and the rotating frame 5, and the internal gear slewing bearing 7 is meshed with a reducer 11 with an output gear, and the reducer 11 with an output gear is connected to an asynchronous motor 13.

[0037] Mounting ring 2 includes a fixed mounting ring and a rotating mounting ring. The fixed mounting ring is fixedly connected to the movable frame 1, and the rotating mounting ring is fixedly connected to the rotating frame 5. A first test chamber is provided between the fixed mounting ring and the rotating mounting ring, and a second test chamber is provided between the rotating frame 5 and the fixed frame 6. To achieve a seal, O-rings 20 are provided on both sides of the mounting ring 2.

[0038] The mounting ring 2 has a radial channel, and the fixing bracket 6 has an axial channel. The radial channel is connected to the first test chamber, and the axial channel is connected to the second test chamber. The radial and axial channels are connected to the test workstation 15. The test workstation 15 is connected to a flow meter 10, a pressure regulating valve 9 with pressure display, and a ball valve 8.

[0039] It also includes a host computer 16, which is connected to a test workstation 15, an asynchronous motor 13, a pressure regulating valve 9 with pressure display, and a lead screw and slide rail system 14.

[0040] Temperature sensors 19 are installed on the mounting ring 2 and the fixing bracket 6.

[0041] A rotation center 12 is provided in the middle of the fixed frame 6, and a reducer 11 with output gear is arranged around the rotation center 12.

[0042] The high-efficiency and highly adaptable shield tunneling machine sealing test device of this embodiment can install sealing rings of different diameters, specifications, and materials. It can be filled with gas, liquid, or grease through internal pipelines and can withstand a working pressure of 10 Bar to simulate the actual working environment of sealing and lubrication. It is equipped with a temperature sensor, flow meter, and pressure gauge. It can perform static sealing tests when stationary and dynamic sealing tests when rotating, thereby achieving the purpose of sealing performance testing and life testing. It conducts tests and analysis on the seal and outputs test and inspection reports.

[0043] like Figures 1 to 6 As shown, the movable frame 1 and the rotating frame 5 can be connected and installed with mounting rings 2 of various specifications via mounting ring screws 22. These can accommodate radial and axial seals, various diameters, and can be installed in either the forward or reverse direction, facing outward or inward. Material is not limited, and finger seals and VD seals are also possible. The mounting rings 2 include two types: fixed mounting rings and rotating mounting rings. In the figure, the seventh mounting ring 2.7 is a fixed mounting ring, and the eighth mounting ring 2.8 is a rotating mounting ring. The radial sealing pressure plate 41 is fixed to the eighth mounting ring 2.8 via pressure plate screws 21. At this time, the radial sealing pressure plate 41 presses the radially tested sealing ring 3 onto the mounting ring 2. When the rotating frame 5 rotates, the rotating frame 5 and the movable frame 1 have relative rotational movement. The rotating mounting ring on the rotating frame 5 can drive the radially tested sealing ring 3 to rotate, or act as a friction surface for the radially tested sealing ring 3. Correspondingly, the fixed mounting ring on the movable frame 1 can act as a friction surface for the radially tested sealing ring 3. This is the radially tested sealing ring. The sealing ring 3 to be tested includes a VD sealing ring 3.1 and a radial finger sealing ring 3.2. The mounting ring 2 is provided with multiple radial channels, such as radial channels F1-00, F2-00 and F3-00 in the figure, which correspond to the testing of different chambers. The figure shows the mounting structure of 10 mounting rings (2.1-2.10).

[0044] The axial sealing plate 42 is fixed to the rotating frame 5 by the pressure plate screw 21. At this time, the axial sealing plate 42 presses the axial finger seal ring 3.3 on the rotating frame 5. When the rotating frame 5 rotates, the rotating frame 5 and the fixed frame 6 have relative rotational movement. The axial finger seal ring 3.3 on the rotating frame 5 rotates, and the fixed frame 6 acts as the wear-resistant surface of the axial finger seal ring 3.3. This is the axial seal ring test.

[0045] The rotating frame 5 is connected and fixed to the internal gear ring of the internal gear slewing bearing 7 via double-ended studs. The fixed frame 6 is connected and fixed to the outer ring of the internal gear slewing bearing 7 via double-ended studs 17. The output gear reducer 11 is connected and fixed to the fixed frame 6 via reducer screws 18. The output gear of the output gear reducer 11 can mesh with the internal gear ring of the internal gear slewing bearing 7 for gear transmission. The asynchronous motor 13 is connected and fixed to the output gear reducer 11 via screws. The rotation center 12 is connected and fixed to the fixed frame 6 via screws. The asynchronous motor 13 causes the output gear reducer 11 to rotate, and the internal gear slewing bearing 7 causes the rotating frame 5 to rotate.

[0046] The mounting ring 2, movable frame 1, rotating frame 5, and fixed frame 6 are all equipped with internal pipelines. External pipelines 23 are individually connected in series to these components, leading to ball valve 8, pressure regulating valve 9 with pressure display, and flow meter 10, ultimately connecting to test workstation 15, which is a pneumatic or hydraulic pump station. Each pipeline can be individually controlled via ball valve 8, thereby controlling the opening and closing of each sealed chamber. The pressure regulating valve 9 with pressure display controls the pressure of each sealed chamber. Flow meter 10 monitors the flow rate of incoming gas, liquid, and grease, and temperature sensor 19 monitors the temperature of the sealing ring. Movable frame 1 and rotating frame 5 have corresponding external channels that correspond to the internal channels.

[0047] The rotary center 12 is fixed to the fixed frame 6 by screws. After the external pipe 23 of the rotating input end connected from the rotating frame 5 is connected to the rotary center 12, the output interface on the rotary center 12 is connected to the fixed external pipe 23. The rotary center 12 can switch the relatively rotating fluid pipe and electrical circuit.

[0048] like Figure 7As shown, the movable frame 1 is slidably mounted on the fixed frame 6 via a screw and slide rail system 14. The screw and slide rail system 14 includes a servo motor 141, a coupling 142, a bearing seat 143, a positioning block 144, a nut connecting seat 145, a slider base 146, a guide rail 147, and a screw 148. The screw 148 and the nut connecting seat 145 are threadedly engaged. The screw 148 is rotatably mounted on the fixed frame 6 via the bearing seat 143 and the positioning block 144. The movable frame 1 is slidably mounted on the guide rail 147 via the slider base 146. Driven by the servo motor 141, the movable frame 1 can perform horizontal translational movement on the fixed frame 6. When the movable frame 1 is separated from the rotating frame 5, the mounting ring 2 on the movable frame 1 and the rotating frame 5 and their mounting accessories, such as the radially oriented sealing ring 3, can be quickly installed and removed.

[0049] The host computer 16 is connected to the test workstation 15, the asynchronous motor 13, the pressure regulating valve 9 with pressure display, the flow meter 10, the temperature sensor 19, and the lead screw and slide rail system 14. The host computer 16 performs various actions and processes the data from various sensors, and finally analyzes and outputs test and inspection reports.

[0050] like Figure 6 As shown, the first test chamber includes a first chamber Q1, a second chamber Q2, and a third chamber Q3 between the mounting ring 2 and the sealing ring 3 to be tested. Sealing is tested by introducing gas or liquid into the pipeline. The second test chamber includes a fourth chamber Q4 and a fifth chamber Q5. Sealing is tested by introducing gas or liquid into the axial channels P1-00 and P2-00. A temperature sensor 19 is inserted at the detection point to detect the temperature of the sealing ring. M1 represents the mounting surface, and M2 represents the wear-resistant surface. This arrangement allows for testing of the sealing pressure resistance and sealing performance in both forward and reverse directions. This invention employs a highly adaptable sealing ring structure and a fully automated moving frame. Both the moving frame and the fixed frame are equipped with detection sensors, allowing simultaneous operation and improving the testing efficiency of a single assembly / disassembly. It can simultaneously test radial and end-face seals of different diameters.

[0051] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency and high-adaptability shield machine sealing test device, characterized in that, The utility model relates to a test device for testing the performance of the valve, which comprises: a fixed frame (6) and a moving frame (1) in sliding fit with the fixed frame (6); a rotating frame (5) in rotary fit with the fixed frame (6); a mounting ring (2) comprising a fixed mounting ring and a rotary mounting ring, the fixed mounting ring being fixedly connected with the moving frame (1) and the rotary mounting ring being fixedly connected with the rotating frame (5), a first test cavity being arranged between the fixed mounting ring and the rotary mounting ring, and a second test cavity being arranged between the rotating frame (5) and the fixed frame (6).

2. The efficient and high-adaptable shield machine sealing test device according to claim 1, characterized in that: A radial passage is arranged in the mounting ring (2), and an axial passage is arranged in the fixed frame (6), the radial passage being connected with the first test cavity and the axial passage being connected with the second test cavity.

3. The efficient and highly adaptable shield machine seal testing device according to claim 2, characterized in that A screw slide rail system (14) is arranged on the fixed frame (6), and the moving frame (1) is mounted on the screw slide rail system (14).

4. The efficient and highly adaptable shield machine seal testing device of claim 3, wherein: An inner tooth rotary support (7) is arranged between the fixed frame (6) and the rotating frame (5), the inner tooth rotary support (7) being engaged with a gear output reducer (11), and the gear output reducer (11) being connected with an asynchronous motor (13).

5. The efficient and highly adaptable shield machine seal testing device of claim 4, wherein: Temperature sensors (19) are arranged on the mounting ring (2) and the fixed frame (6).

6. The efficient and highly adaptable shield machine seal testing device of claim 5, wherein: The radial passage and the axial passage are connected with a test workstation (15).

7. The efficient and highly adaptable shield machine seal testing device according to claim 6, characterized in that A rotary center (12) is arranged in the middle of the fixed frame (6), and the gear output reducer (11) is arranged around the rotary center (12).

8. The efficient and highly adaptable shield machine seal testing device according to claim 7, characterized in that: The test workstation (15) is connected with a flowmeter (10), a pressure display pressure regulating valve (9), and a ball valve (8).

9. The efficient and highly adaptable shield machine seal testing device according to claim 8, characterized in that: An upper computer (16) is further included, and the upper computer (16) is connected with the test workstation (15), the asynchronous motor (13), the pressure display pressure regulating valve (9), the temperature sensors (19), and the screw slide rail system (14).

10. The efficient and highly adaptable shield machine seal testing device of claim 9, wherein: O-shaped sealing rings (20) are arranged on both sides of the mounting ring (2).

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