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

Abstract

The invention discloses a high-efficiency and high-adaptation shield tunneling machine sealing test device, which comprises a fixed frame and a movable frame, and is characterized in that 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] The present invention relates to the field of shield machine main drive sealing performance detection, and specifically to a highly efficient and highly adaptable shield machine sealing test device. Background Technique

[0002] In the field of tunnel boring engineering, as a special engineering mechanical equipment for tunnel boring, shield machines are widely used in the construction of underground projects such as subways, municipal works, railways, highways, water conservancy, and mines. During the boring process, when the shield machine faces various strata such as hard rock, sand layers, and clay layers, its key components, the main drive and the shield body, need to be sealed to ensure the reliable operation of the equipment. The main drive needs to be sealed to block the internal oil in the gearbox and resist the muck in the excavation chamber externally, preventing impurities such as muck and muddy water from entering the internal gear oil tank; the seal at the articulated part of the shield body needs to prevent external soil and sand from entering the shield body and causing damage to the internal components. Shield machines have a large investment. If a failure occurs in their key components, the main drive or the shield body, in severe cases, it is necessary to excavate a shaft and hoist it out for repair, which brings huge economic losses and adverse social impacts to the project construction. Therefore, the reliability, safety, and lifespan of the seal are crucial. Thus, it is very necessary to simulate the real environment and conduct reliability tests and lifespan tests on the seal during the initial R & D stage, the design process, the prototype testing stage, and the maintenance and replacement stages.

[0003] Generally, the commonly used seals for shield machines are four-finger seals and VD seals. The materials are generally polyurethane and rubber, generally in the form of annular seals, with the direction generally being axial or radial, and the front and back sides are distinguishable.

[0004] Existing shield machine seal test benches cannot meet the actual use test requirements. For example, the test benches of seal manufacturers generally test scaled-down samples. Even if the test bench restores the seal size at a 1:1 ratio, it only tests a single diameter, testing the sealing performance of a certain fixed size. When different diameter requirements exist in actual products, it cannot be quickly and directly tested, and it is necessary to replace the entire test bench or multiple components, resulting in high production costs and time costs and low adaptability. Summary of the Invention

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

[0006] To achieve the above purpose, the present invention provides the following technical solution: A highly efficient and highly adaptable shield machine sealing test device, comprising:

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

[0008] A rotating frame, rotatably matched 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 moving frame, and the rotating mounting ring is fixedly connected to the rotating frame. 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 and the fixed frame.

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

[0011] A radial channel is provided in the mounting ring, and an axial channel is provided in the fixed frame. The radial channel is connected to the first test chamber, and the axial channel is connected to the second test chamber.

[0012] A lead screw and slide rail system is provided on the fixed frame, and the moving frame is installed on the lead 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 meshes with a gear reducer with an output gear, and the gear reducer with an output gear is connected to an asynchronous motor.

[0014] Temperature sensors are provided on the mounting ring and the fixed frame.

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

[0016] A rotation center is provided in the middle of the fixed frame, and the gear reducer with an output gear is arranged around the rotation center.

[0017] The test workstation is connected to a flow meter, a pressure display and pressure regulating valve, and a ball valve. Each pipeline can be controlled separately through the ball valve, so as to control the opening and closing of each sealing chamber. The pressure of each sealing chamber can be controlled through the pressure display and pressure regulating valve. The flow rate of the gas, liquid, and grease filled is monitored through the flow meter, and the sealing temperature is monitored through the temperature sensor.

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

[0019] O-ring seals are provided on both sides of the mounting ring. Installation grooves are provided on the moving frame and the rotating frame, and the mounting ring is placed through the installation grooves. The O-ring seals are used to form a sealing structure.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The high-efficiency and high-adaptability shield machine sealing test device of the present invention can simulate the real environment to conduct performance tests and life tests on the seals; it can quickly test the seal products to be tested, and can simultaneously meet the needs of seal tests with different diameters, different specifications, and different materials. Brief Description of the Drawings

[0022] Figure 1 Schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Schematic three-dimensional structure diagram of the mounting ring installation of the present invention;

[0024] Figure 3 Schematic side view structure diagram of the rotating frame of the present invention;

[0025] Figure 4 Schematic separated structure diagram of the moving frame and the rotating frame of the present invention;

[0026] Figure 5 Schematic assembly structure diagram of the mounting ring of the present invention;

[0027] Figure 6 Schematic structure diagram of a single test unit of the present invention;

[0028] Figure 7 Schematic structure diagram of the lead screw and slide rail system of the present invention.

[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 display pressure regulating valve; 10, flow meter; 11, speed reducer with output gear; 12, center of rotation; 13, asynchronous motor; 14, lead screw and slide rail system; 15, test workstation; 16, upper computer; 19, temperature sensor; 20, O-ring; 21, pressing plate screw; 22, mounting ring screw; 23, external pipeline; 41, radial sealing pressing plate; 42, axial sealing pressing plate; 2.1, first 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 seat; 144, positioning block; 145, nut connecting seat; 146, slider base; 147, guide rail; 148, lead screw. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

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

[0035] A fixed frame 6 and a moving frame 1, and the moving frame 1 is slidably matched with the fixed frame 6; a lead screw and slide rail system 14 is provided on the fixed frame 6, and the moving frame 1 is installed on the lead screw and slide rail system 14.

[0036] A rotating frame 5, which is rotationally matched with the fixed frame 6; an internal gear slewing bearing 7 is provided between the fixed frame 6 and the rotating frame 5, the internal gear slewing bearing 7 meshes with a gear reducer 11 with an output gear, and the gear reducer 11 with an output gear is connected to an asynchronous motor 13.

[0037] An installation ring 2, including a fixed installation ring and a rotating installation ring. The fixed installation ring is fixedly connected to the moving frame 1, the rotating installation ring is fixedly connected to the rotating frame 5, a first test cavity is provided between the fixed installation ring and the rotating installation ring, and a second test cavity is provided between the rotating frame 5 and the fixed frame 6. In order to achieve sealing, O-ring seals 20 are provided on both sides of the installation ring 2.

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

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

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

[0041] A rotation center 12 is provided in the middle of the fixing bracket 6, and the output gear reducer 11 is arranged around the rotation center 12.

[0042] The high-efficiency and highly adaptable shield machine seal test device of this embodiment can install sealing rings of different diameters, different specifications, and different materials, and can fill gases, liquids, and greases through internal pipelines. It can withstand a working pressure of 10 Bar, simulate the actual working environment of seal lubrication, and is equipped with temperature sensors, flow meters, and pressure gauges. It can perform static seal tests when stationary and dynamic seal tests when rotating, so as to achieve the purpose of seal performance testing and life testing, conduct tests and detection and analysis on the seals, and output test and detection reports.

[0043] As Figures 1 to 6 shown, the moving frame 1 and the rotating frame 5 can be connected through the mounting ring screws 22 to install mounting rings 2 of various specifications, and can install radial seals and axial seals with various diameters, which can be installed in the forward or reverse direction, facing outwards or inwards, regardless of the material, such as finger seals and VD seals. The mounting ring 2 includes 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 seal pressing plate 41 is fixed to the eighth mounting ring 2.8 through the pressing plate screw 21. At this time, the radial seal pressing plate 41 in the radial direction presses the to-be-tested sealing ring 3 in the radial direction against the mounting ring 2; when the rotating frame 5 rotates, there is a relative rotational movement between the rotating frame 5 and the moving frame 1. The rotating mounting ring on the rotating frame 5 can drive the to-be-tested sealing ring 3 in the radial direction to rotate, or act as the wear-resistant surface of the to-be-tested sealing ring 3 in the radial direction for friction. Correspondingly, the fixed mounting ring on the moving frame 1 can act as the wear-resistant surface of the to-be-tested sealing ring 3 in the radial direction for friction. This is the test of the to-be-tested sealing ring in the radial direction. The to-be-tested sealing ring 3 includes a VD sealing ring 3.1 and a radial finger sealing ring 3.2. Multiple radial channels are provided on the mounting ring 2, such as the radial channels F1-00, F2-00, and F3-00 in the figure, corresponding to the tests of different chambers. The figure shows the mounting structure of 10 mounting rings (2.1-2.10).

[0044] The axial sealing pressing plate 42 in the axial direction is fixed to the rotating frame 5 by the pressing plate screw 21. At this time, the axial sealing pressing plate 42 in the axial direction presses the axial finger-shaped sealing ring 3.3 in the axial direction against the rotating frame 5. When the rotating frame 5 rotates, there is a relative rotational movement between the rotating frame 5 and the fixed frame 6. The axial finger-shaped sealing ring 3.3 on the rotating frame 5 rotates, and the fixed frame 6 rubs against the wear-resistant surface of the axial finger-shaped sealing ring 3.3 in the axial direction. This is the sealing ring test in the axial direction.

[0045] The rotating frame 5 is connected and fixed to the internal gear ring of the internal gear slewing bearing 7 through a stud. The fixed frame 6 is connected and fixed to the outer ring of the internal gear slewing bearing 7 through a stud 17. The gear reducer 11 with an output gear is connected and fixed to the fixed frame 6 through a reducer screw 18. The output gear of the gear reducer 11 with an output gear can be engaged in gear transmission with the internal gear ring of the internal gear slewing bearing 7. The asynchronous motor 13 is connected and fixed to the gear reducer 11 with an output gear through a screw. The rotation center 12 is connected and fixed to the fixed frame 6 through a screw. The gear reducer 11 with an output gear is rotated by the asynchronous motor 13, and the rotating frame 5 is rotated by the internal gear slewing bearing 7.

[0046] Internal pipelines are provided on the mounting ring 2, the moving frame 1, the rotating frame 5, and the fixed frame 6. The external pipeline 23 is separately connected in series to these components to the ball valve 8, the pressure display pressure regulating valve 9, and the flow meter 10, and finally connected to the test workstation 15. The test workstation 15 is a pneumatic or hydraulic pump station. Each pipeline can be individually controlled through the ball valve 8, thereby controlling the opening and closing of each sealing chamber. The pressure of each sealing chamber can be controlled through the pressure display pressure regulating valve 9. The flow rate of the gas, liquid, and grease filled is monitored through the flow meter 10. The temperature of the sealing ring is monitored through the temperature sensor 19. Corresponding external channels are provided on the moving frame 1 and the rotating frame 5, corresponding to the internal channels.

[0047] The rotation center 12 is connected and fixed to the fixed frame 6 through a screw. After the external pipeline 23 at the rotating input end connected from the rotating frame 5 is connected to the rotation center 12, the output interface on the rotation center 12 is connected to the fixed external pipeline 23. The rotation center 12 can convert the fluid pipeline and electrical circuit for relative rotation.

[0048] Such as Figure 7As shown in the figure, the moving frame 1 is slidably mounted on the fixed frame 6 through the lead screw and slide rail system 14; the lead 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 lead screw 148. The lead screw 148 is in threaded fit with the nut connecting seat 145. The lead screw 148 is rotatably mounted on the fixed frame 6 through the bearing seat 143 and the positioning block 144. The moving frame 1 is slidably mounted on the guide rail 147 through the slider base 146. Driven by the servo motor 141, the moving frame 1 can perform a horizontal translation movement on the fixed frame 6. When the moving frame 1 is separated from the rotating frame 5, the mounting ring 2 on the moving frame 1 and the rotating frame 5 and the mounting accessories thereon, such as the sealing ring 3 to be measured in the radial direction, can be quickly assembled and disassembled.

[0049] The host computer 16 is respectively connected to the test workstation 15, the asynchronous motor 13, the pressure display pressure regulating valve 9, the flow meter 10, the temperature sensor 19, and the lead screw and slide rail system 14. The host computer 16 performs various action operations and processes various sensor data, and finally outputs test and detection reports through analysis.

[0050] As Figure 6 shown, the first test cavity includes a first cavity Q1, a second cavity Q2 and a third cavity Q3 between the mounting ring 2 and the sealing ring 3 to be measured. Sealing detection is carried out by introducing gas or liquid into the pipeline. The second test cavity includes a fourth cavity Q4 and a fifth cavity Q5. Sealing detection is carried out by introducing gas or liquid into the axial channel P1-00 and the axial channel P2-00. The temperature sensor 19 is inserted into the detection point to detect the temperature of the sealing ring. Among them, M1 represents the mounting surface and M2 represents the wear-resistant surface. Arranged in this way, the forward and reverse sealing pressure-bearing capacity, sealing performance, etc. can be detected. The present invention adopts a highly adaptable sealing ring structure, a fully automated moving frame, and both the moving frame and the fixed frame are equipped with detection sensors, which can work simultaneously, improve the test efficiency of single assembly and disassembly, and can measure radial and end face seals with different diameters at the same time.

[0051] The above are only the embodiments of the present invention. Common knowledge such as the specific structures and characteristics in the solutions is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A high-efficiency and high-adaptability shield machine sealing test device, characterized in that: include: A fixed frame (6) and a movable frame (1), wherein the movable frame (1) and the fixed frame (6) are slidably matched; The rotating frame (5) is rotatably matched with the fixed frame (6); The mounting ring (2) comprises a fixed mounting ring and a rotating mounting ring, wherein 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 cavity is arranged between the fixed mounting ring and the rotating mounting ring, and a second test cavity is arranged between the rotating frame (5) and the fixed frame (6).

2. The high-efficiency and high-adaptability shield machine sealing test device according to claim 1 is characterized in that: A radial channel is provided in the mounting ring (2), an axial channel is provided in the fixing frame (6), the radial channel is connected to the first test cavity, and the axial channel is connected to the second test cavity.

3. The high-efficiency and high-adaptability shield machine sealing test device according to claim 2 is characterized in that: The fixed frame (6) is provided with a screw guide rail system (14), and the movable frame (1) is installed on the screw guide rail system (14).

4. The high-efficiency and high-adaptability shield machine sealing test device according to claim 3 is characterized in that: An internal gear slewing bearing (7) is arranged between the fixed frame (6) and the rotating frame (5), the internal gear slewing bearing (7) is meshed with an output gear reducer (11), and the output gear reducer (11) is connected to an asynchronous motor (13).

5. The high-efficiency and high-adaptability shield machine sealing test device according to claim 4 is characterized in that: The mounting ring (2) and the fixing frame (6) are provided with temperature sensors (19).

6. The high-efficiency and high-adaptability shield machine sealing test device according to claim 5 is characterized in that: The radial channel and the axial channel are connected to a testing workstation (15).

7. The high-efficiency and high-adaptability shield machine sealing test device according to claim 6 is characterized in that: A rotation center (12) is arranged in the middle of the fixed frame (6), and the output gear reducer (11) is arranged around the rotation center (12).

8. The high-efficiency and high-adaptability shield machine sealing test device according to claim 7 is characterized in that: The test workstation (15) is connected to a flow meter (10), a pressure regulating valve with a pressure display (9), and a ball valve (8).

9. The high-efficiency and high-adaptability shield machine sealing test device according to claim 8 is characterized in that: It also includes a host computer (16), which is connected to the test workstation (15), the asynchronous motor (13), the pressure regulating valve with pressure display (9), the temperature sensor (19) and the screw guide rail system (14).

10. The high-efficiency and high-adaptability shield machine sealing test device according to claim 9 is characterized in that: O-type sealing rings (20) are arranged on both sides of the mounting ring (2).

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