Tunnel boring machine center swivel joint sealing performance detection device

Abstract

The utility model discloses a device for detecting the sealing performance of a central rotary joint of a tunnel boring machine, and solves the problems that the maintenance pressure maintaining test of a rotary joint of a shield tunneling machine in the prior art is greatly limited by a site, and the pressure maintaining mode is single. The tunnel boring machine center swivel joint sealing performance detection device comprises a movable trolley which is provided with an adjustable fixing frame used for bearing a swivel joint. The moving trolley is provided with a driving mechanism used for driving the rotary joint to rotate, a hydraulic system used for providing a hydraulic test and an air pressure system used for providing an air pressure test. According to the utility model, the hydraulic system and the pneumatic system are arranged on the moving trolley, so that a hydraulic test system pressure maintaining test or a pneumatic test system pressure maintaining test can be selectively performed on the swivel joint, the pressure maintaining modes can be freely switched according to scene requirements, and the dual requirements of dynamic pressure maintaining and static pressure maintaining are met; the problem that a traditional swivel joint test is single in pressure maintaining mode is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the full section tunnel boring machine technical field, especially a tunnel boring machine center rotary joint sealing performance detection device. BACKGROUND

[0002] In recent years, the shield machine of underground tunneling mechanical engineering equipment develops rapidly, and the degree of wear and damage of the shield machine after the hole is out is quite different due to the difference of the application stratum, so the shield machine market in use in China has entered the maintenance and remanufacturing period. The maintenance and pressure test of the rotary joint as the transition adapter connected with the cutter head and the rear matched pipeline is particularly critical, although there are many current pressure test methods, such as oil pressure, but due to the problem of tunneling machine maintenance site, the form and medium of on-site pressure test become the main factors restricting the maintenance test. Sometimes, it is necessary to replace the pressure medium and pressure several times. But this situation will waste personnel and equipment pressure, or due to the limitation of site, it is impossible to pressure, waste of manpower and material resources, and it is time-consuming and laborious to transport and disassemble.

[0003] Although there are many research results on the pressure mode of the rotary joint in recent years, especially the test bench and other pressure modes, such as the rotary device and the center rotary joint reliability test device of application number 201510686088.1, but the main use of oil pressure is to pressure, that is, the pressure mode method is relatively single, and the test device cannot meet the demand of multi-scene pressure. Therefore, it is necessary to design a movable double-mode tunnel boring machine center rotary joint sealing performance detection device. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the above background art, the utility model provides a tunnel boring machine center rotary joint sealing performance detection device, which solves the problem of site limitation and single pressure mode in the maintenance and pressure test of the shield machine rotary joint in the prior art. The utility model can meet the requirements of movable, free switching of pressure mode, dynamic and static pressure, reduce the time of manual transportation and pressure equipment, and achieve the technical effects of convenience and efficiency.

[0005] The utility model discloses a technical scheme is realized as follows: a tunnel boring machine center rotary joint sealing performance detection device, including movable trolley, movable trolley is equipped with the adjustable mount for bearing the rotary joint, and movable trolley is equipped with the drive mechanism for driving the rotary joint rotation, the hydraulic system for providing the hydraulic test and the air pressure system for providing the air test, the hydraulic system is connected with the import of rotary joint and can deliver hydraulic oil for it, the air pressure system is connected with the import of rotary joint and can deliver gas test medium for it, the drive mechanism, the hydraulic system and the air pressure system are connected with the controller, can switch the pressure -retaining mode according to the scene requirement freely, satisfy dynamic, static pressure -retaining dual demand.

[0006] Further preferably, the movable trolley is provided with an oil collecting tank on the vehicle body, the oil collecting tank is located below the adjustable mount, the collecting port of the oil collecting tank corresponds to the rotary joint, and the bottom of the oil collecting tank is provided with a drain port; the oil collecting tank is used for collecting the overflowed oil during the test, and the collected oil can be recycled.

[0007] Further preferably, the vehicle body is a frame structure, the oil collecting tank is embedded on the vehicle body through a support, the adjustable mount, the drive mechanism, the hydraulic system and the air pressure system are all located above the oil collecting tank, the bottom of the vehicle body is provided with wheels, and one side of the vehicle body is provided with a handrail; the movable trolley is convenient for moving the whole device, and can satisfy the function of convenient dynamic and static pressure retaining detection of the rotary joint in multiple scenes.

[0008] Further preferably, the adjustable mount comprises a movable carriage, the movable carriage is slidingly connected with the movable trolley, one side of the movable carriage corresponding to the drive mechanism is provided with a mount, and the other side is provided with a support, a transition piece is rotatably arranged on the mount, one end of the rotary joint is connected with the transition piece, and the other end is connected with the support; the transition piece provides stable support for the rotary joint.

[0009] Further preferably, the transition piece is connected with the output end of the drive mechanism, and the drive mechanism drives the rotary joint to rotate through the transition piece. Specifically, the drive mechanism comprises a drive motor and a speed reducer connected with the drive motor, and the drive motor is connected to the movable trolley through a seat.

[0010] Further preferably, the hydraulic system comprises an oil tank and a hydraulic pump, a one-way valve and a pressure reducing valve I are sequentially arranged on the hydraulic pipe I where the hydraulic pump is located, the pressure reducing valve I outlet is connected with a plurality of parallel arranged hydraulic hoses, and the hydraulic hoses lead to the corresponding import of the rotary joint.

[0011] In a further preferred embodiment, the oil tank is also equipped with a filter assembly, and the hydraulic pipe II where the filter assembly is located is connected in parallel with the hydraulic pipe I. A safety valve is provided between the hydraulic pipe II and the hydraulic pipe I. A first pressure gauge is provided on the hydraulic pipe I, and the first pressure gauge is located between the check valve and the pressure reducing valve I. A manual ball valve I and a second pressure gauge are provided on the hydraulic hose. The hydraulic pump is driven by motor I.

[0012] In a further preferred embodiment, the pneumatic system includes an air compressor, the output end of which is connected to an air pipe. The air pipe is sequentially equipped with a micro-opening safety valve, a third pressure gauge, and a pressure reducing valve II. The output end of the air pipe is connected to several parallel pneumatic hoses, which lead to the inlet corresponding to the rotary joint.

[0013] Further preferably, the air compressor is connected to a storage battery, a fourth pressure gauge is installed on the air pipe between the pressure reducing valve II and the air pressure hose, and a manual ball valve II and a fifth pressure gauge are installed on the air pressure hose.

[0014] The beneficial effects of this utility model are as follows: By setting up a hydraulic system and a pneumatic system on the mobile trolley, this utility model can selectively perform hydraulic or pneumatic pressure holding tests on the rotary joint, and can freely switch the pressure holding method according to the needs of the scenario, meeting both dynamic and static pressure holding requirements; it solves the problem of the single pressure holding method in traditional rotary joint testing. In addition, the mobile trolley of this utility model, in conjunction with the adjustable fixed frame, facilitates the quick connection of the rotary joint with the drive mechanism, hydraulic system, and pneumatic system. At the same time, the movable carriage is used to adjust the distance to accommodate rotary joints of different sizes used in tunnel boring machines, improving the applicability and flexibility of the device; it meets the function of convenient dynamic and static pressure holding testing of rotary joints in multiple scenarios. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 This is a schematic diagram of the pneumatic system principle of this utility model.

[0019] Figure 4 This is a schematic diagram of the hydraulic system principle of this utility model. Detailed Implementation

[0020] 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.

[0021] It should be noted that this utility model improves the equipment components and does not involve improvements to the circuit or control program. This utility model only controls the operation and shutdown of various electronic devices through a PLC control system. Since the PLC control system is a mature automatic control system in industry, this utility model will not elaborate on the circuit and control program content.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1, as Figure 1 , 2As shown, a device for testing the sealing performance of a tunnel boring machine's central rotary joint includes a movable trolley 7. The movable trolley allows for flexible movement of the entire testing device, fulfilling the function of convenient dynamic and static pressure holding tests for the rotary joint in various scenarios. The movable trolley 7 is equipped with an adjustable mounting bracket 6 for supporting the rotary joint 10. The position of the adjustable mounting bracket 6 relative to the movable trolley is movable, facilitating quick connection of the rotary joint with the drive mechanism, hydraulic system 4, and pneumatic system 5. Furthermore, a movable slide is used to adjust the distance to accommodate rotary joints of different sizes used in tunnel boring machines. The movable trolley 7 is equipped with a drive mechanism for driving the rotary joint 10 to rotate, a hydraulic system 4 for providing hydraulic testing, and a pneumatic system 5 for providing pneumatic testing. The drive mechanism provides the power for the rotation of the rotary joint 10, meeting both dynamic and static pressure holding requirements. Hydraulic system 4 is connected to the inlet of rotary joint 10 and can supply hydraulic oil to it; pneumatic system 5 is connected to the inlet of rotary joint 10 and can supply gaseous test medium to it; the drive mechanism, hydraulic system 4, and pneumatic system 5 are all connected to controller 9. Controller 9 is located in the corresponding control box and is used for the operation control of this device during testing. During use, the pressure holding method can be freely selected according to the site conditions and pressure holding requirements. The hydraulic test system and pneumatic test system provide two pressure holding test modes for this mechanism, mainly providing certain pressure and flow rates. According to this invention, it can adapt to the rapid pressure holding requirements of multiple scenarios, achieving convenient and efficient technical effects, and solving the problems of shield tunneling machines being limited by site conditions and the difficulty in transporting and using pressure holding equipment in the prior art.

[0024] In this embodiment, the movable trolley 7 has an oil collection tank 73 on its body 72. The oil collection tank 73 is located below the adjustable mounting bracket 6 and is used to collect oil overflowing from the rotary joint 10 on the adjustable mounting bracket. The collection port of the oil collection tank 73 corresponds to the rotary joint 10, ensuring that the oil overflowing from the rotary joint 10 flows accurately into the oil collection tank 73. The bottom of the oil collection tank 73 has an oil drain port 75 through which the oil flows out for easy recycling. The movable trolley 7 also has a toolbox 8 for storing wrenches, connectors, and hoses.

[0025] Example 2, as Figure 1As shown, a sealing performance testing device for the center rotary joint of a tunnel boring machine is presented in this embodiment, which is a further optimization based on embodiment 1. In this embodiment, the vehicle body 72 is a frame structure, and the oil collection tank 73 is embedded in the vehicle body 72 through the support member 74. That is, the oil collection tank 73 serves as the support surface of the vehicle body and also has the function of collecting oil. The adjustable fixing frame 6, the drive mechanism, the hydraulic system 4, and the pneumatic system 5 are all located above the oil collection tank 73, and the oil overflowing from each part can enter the oil collection tank. The bottom of the vehicle body 72 is equipped with wheels 76, and one side of the vehicle body 72 is equipped with a handrail 71. In actual use, the test device is manually pushed to move, which meets the function of convenient dynamic and static pressure holding test of rotary joint in multiple scenarios, and achieves the purpose of convenience and efficiency.

[0026] In this embodiment, the adjustable fixed frame 6 includes a movable slide 62, which is slidably connected to the movable trolley 7. The specific structure of this sliding pair is as follows: the movable slide can adopt a structure similar to a gantry frame, with its bottom slidably positioned within the slide groove of the movable trolley. It can move relative to the movable trolley under manual pushing, changing the position of its rotary joint. A fixed frame 61 is provided on one side of the movable slide 62 corresponding to the drive mechanism, and a support frame 63 is provided on the other side. A transition piece 3 is rotatably mounted on the fixed frame 61. One end of the rotary joint 10 is connected to the transition piece 3, and the other end is connected to the support frame 63. The rotary joint can be connected to the support frame via a two-part snap-fit ​​connection structure, facilitating the installation and positioning of rotary joints of different sizes. The transition piece 3 is connected to the output end of the drive mechanism, and the drive mechanism drives the rotary joint 10 to rotate through the transition piece 3. The drive mechanism includes a drive motor 1 and a reducer 2 connected to the drive motor 1. The drive motor 1 is connected to the movable trolley 7 via a base 11. The transition piece 3 is a sealing plate similar to a bearing. The transition piece is connected to the rotary joint by internal hex bolts. The transition piece is mainly used to connect the output shaft of the reducer to the rotary joint, and can also transmit torque to drive the joint to rotate. In addition, the transition piece also serves to seal the oil hole water channel at one end of the rotary joint.

[0027] Example 3, as Figure 4As shown, a device for testing the sealing performance of a center rotary joint of a tunnel boring machine is presented. This embodiment is a further optimization based on embodiment 1 or 2. In this embodiment, the hydraulic system 4 includes an oil tank 410 and a hydraulic pump 402. A one-way valve 404 and a pressure reducing valve 406 are sequentially installed on the hydraulic pipe Ⅰ 403 where the hydraulic pump 402 is located. The outlet of the pressure reducing valve Ⅰ 406 is connected to several hydraulic hoses 413 arranged in parallel. The hydraulic hoses 413 lead to the corresponding inlet of the rotary joint 10. In addition, as a preferred embodiment, the oil tank 410 is also provided with a filter assembly 409, which includes two filters arranged in series for filtering the oil. The hydraulic pipe II 408, where the filter assembly 409 is located, is connected in parallel with the hydraulic pipe I 403. A safety valve 407 is installed between the hydraulic pipe II 408 and the hydraulic pipe I 403. A first pressure gauge 405 is installed on the hydraulic pipe I 403, located between the check valve 404 and the pressure reducing valve I 406. A manual ball valve I 411 and a second pressure gauge 412 are installed on the hydraulic hose 413. The hydraulic pump 402 is driven by the motor I 401. The hydraulic testing system requires an external power source to provide electric power to drive the hydraulic pump.

[0028] The steps for using this test apparatus to maintain pressure in the hydraulic testing system are as follows:

[0029] Step 1: Select a cable of appropriate length to connect from the distribution cabinet to the control box of this device.

[0030] Step 2: If the rotary joint has been removed, install the rotary joint on the adjustable mounting bracket and connect the transition piece to the rotary joint with hex bolts. Secure the rotary joint firmly with the mounting bracket (skip this step if it has not been removed).

[0031] Step 3: Select hydraulic hoses of appropriate length and connect them to the rotary joints.

[0032] Step 4: Check the pipeline connections to eliminate any contact interference between the pipeline and rotating parts, and open the manual ball valve I of the oil inlet pipe.

[0033] Step 5: Adjust the safety valve or pressure reducing valve I, start the hydraulic pump, and control the oil to enter the rotary joint through the pipeline.

[0034] Step Six: Pour in enough oil according to the pressure holding requirements, stabilize the pressure again after five minutes, and then start the pressure holding test.

[0035] Step 7: Repeat steps 3 to 6 above to maintain pressure in each chamber of the rotary joint.

[0036] like Figure 3As shown, the pneumatic system 5 in this embodiment includes an air compressor 502. The output end of the air compressor 502 is connected to an air pipe 503. The air pipe 503 is sequentially equipped with a micro-opening safety valve 504, a third pressure gauge 505, and a pressure reducing valve II 506. The output end of the air pipe 503 is connected to several parallel-connected pneumatic hoses 510, which lead to the corresponding inlets of the rotary joint 10. The air compressor 502 is connected to a storage battery 501. A fourth pressure gauge 507 is installed on the air pipe 503 between the pressure reducing valve II 506 and the pneumatic hoses 510. A manual ball valve II 508 and a fifth pressure gauge 509 are installed on the pneumatic hoses 510. The pneumatic testing system can be connected to an external power source or use a battery pack to provide electric power to drive the air compressor.

[0037] The steps for using this test apparatus to maintain pressure in the pneumatic test system are as follows:

[0038] Step 1: Select whether to use a battery pack or connect to an external power source based on the usage scenario. If using an external power source, select a cable of appropriate length to connect the device's control box from the distribution cabinet.

[0039] Step 2: If the rotary joint has been removed, install the rotary joint onto the fixing part of this device, and connect the transition part to the rotary joint with hex bolts. The rotary joint is then firmly fixed by the fixing part (if it has not been removed, skip this step).

[0040] Step 3: Select the appropriate length of air hose and connect it to the rotary joint.

[0041] Step 4: Check the pipe connections to eliminate any contact interference between the pipes and rotating parts, and open the manual ball valve II of the air intake pipe.

[0042] Step 5: Adjust the micro-opening safety valve and pressure reducing valve II, start the air compressor, and control the gas to enter the rotary joint through the pipeline.

[0043] Step Six: Pour in enough gas according to the pressure holding requirements, stabilize the pressure again after five minutes, and then start the pressure holding test.

[0044] Step 7: Repeat steps 3 to 6 above to maintain pressure in each chamber of the rotary joint.

[0045] Compared with existing pressure-holding methods, this utility model can freely switch pressure-holding methods according to the needs of the scenario, and meet the function of convenient dynamic and static pressure-holding testing of rotary joints in multiple scenarios, achieving convenient and efficient technical effects; it solves the problems of shield tunneling machines being greatly limited by the site and the difficulty in transporting and using pressure-holding equipment in the existing technology.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the sealing performance of a central rotary joint of a tunnel boring machine, comprising a movable trolley (7), characterized in that: The movable trolley (7) is provided with an adjustable fixed frame (6) for carrying the rotary joint (10). The movable trolley (7) is provided with a drive mechanism for driving the rotary joint (10) to rotate, a hydraulic system (4) for providing hydraulic testing, and a pneumatic system (5) for providing pneumatic testing. The hydraulic system (4) is connected to the inlet of the rotary joint (10) and can supply hydraulic oil to it. The pneumatic system (5) is connected to the inlet of the rotary joint (10) and can supply gas testing medium to it. The drive mechanism, the hydraulic system (4) and the pneumatic system (5) are all connected to the controller (9).

2. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 1, characterized in that: The movable trolley (7) has an oil collection tank (73) on its body (72). The oil collection tank (73) is located below the adjustable fixing frame (6). The collection port of the oil collection tank (73) corresponds to the rotary joint (10). The bottom of the oil collection tank (73) has an oil drain port (75).

3. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 2, characterized in that: The vehicle body (72) is a frame structure. The oil collection tank (73) is embedded in the vehicle body (72) through the support (74). The adjustable fixing frame (6), drive mechanism, hydraulic system (4) and pneumatic system (5) are all located above the oil collection tank (73). The bottom of the vehicle body (72) is provided with wheels (76), and a handrail (71) is provided on one side of the vehicle body (72).

4. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to any one of claims 1 to 3, characterized in that: The adjustable fixed frame (6) includes a movable slide (62), which is slidably connected to the movable trolley (7). The movable slide (62) has a fixed frame (61) on one side corresponding to the drive mechanism and a support frame (63) on the other side. A transition piece (3) is rotatably provided on the fixed frame (61). One end of the rotary joint (10) is connected to the transition piece (3) and the other end is connected to the support frame (63).

5. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 4, characterized in that: The transition piece (3) is connected to the output end of the drive mechanism, and the drive mechanism drives the rotary joint (10) to rotate through the transition piece (3).

6. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 1 or 5, characterized in that: The drive mechanism includes a drive motor (1) and a reducer (2) connected to the drive motor (1). The drive motor (1) is connected to the movable trolley (7) via a seat (11).

7. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 1, characterized in that: The hydraulic system (4) includes an oil tank (410) and a hydraulic pump (402). A check valve (404) and a pressure reducing valve (406) are sequentially installed on the hydraulic pipe I (403) where the hydraulic pump (402) is located. The outlet of the pressure reducing valve I (406) is connected to several hydraulic hoses (413) arranged in parallel. The hydraulic hoses (413) lead to the inlet corresponding to the rotary joint (10).

8. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 7, characterized in that: The oil tank (410) is also equipped with a filter assembly (409). The hydraulic pipe II (408) where the filter assembly (409) is located is connected in parallel with the hydraulic pipe I (403). A safety valve (407) is provided between the hydraulic pipe II (408) and the hydraulic pipe I (403). A first pressure gauge (405) is provided on the hydraulic pipe I (403). The first pressure gauge (405) is located between the check valve (404) and the pressure reducing valve I (406). A manual ball valve I (411) and a second pressure gauge (412) are provided on the hydraulic hose (413). The hydraulic pump (402) is driven by the motor I (401).

9. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 1, 7, or 8, characterized in that: The pneumatic system (5) includes an air compressor (502), the output end of which is connected to an air pipe (503). The air pipe (503) is sequentially equipped with a micro-opening safety valve (504), a third pressure gauge (505) and a pressure reducing valve II (506). The output end of the air pipe (503) is connected to several parallel pneumatic hoses (510), and the pneumatic hoses (510) lead to the inlet corresponding to the rotary joint (10).

10. The device for testing the sealing performance of the central rotary joint of a tunnel boring machine according to claim 9, characterized in that: The air compressor (502) is connected to a storage battery (501). A fourth pressure gauge (507) is provided on the air pipe (503) between the pressure reducing valve II (506) and the air pressure hose (510). A manual ball valve II (508) and a fifth pressure gauge (509) are provided on the air pressure hose (510).

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