Main bearing and heading machine

Abstract

The invention relates to the technical field of tunneling equipment, and provides a main bearing and a tunneling machine, the main bearing comprises an inner ring and an outer ring which are sleeved with each other, a roller chamber is formed between the inner ring and the outer ring, and a plurality of rollers are arranged in the roller chamber; the annular track groove is formed in the inner ring or the outer ring, and an opening of the annular track groove faces the roller cavity; the movable slag suction block is clamped in the circular track groove and can move along the circular track groove, and the movable slag suction block is provided with a slag suction opening facing the roller cavity and a sensor used for monitoring impurities in the main bearing; the slag suction channel is formed in the inner ring or the outer ring, is communicated with the circular track groove and can be in butt joint with the slag suction opening; and the control unit is electrically connected with the movable slag suction block to receive a signal of the sensor and control the movable slag suction block to act. According to the invention, the damage condition of the rolling body and the raceway in the main bearing can be monitored in time, the foreign matter can be cleaned out in time when the foreign matter falling is monitored, and the problem that the existing main bearing does not have the foreign matter transferring and cleaning functions is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tunneling equipment, and in particular to a main bearing and a tunneling machine with a slag suction structure. Background Art

[0002] The main bearing is a key component of a full-section tunnel boring machine. During tunnel excavation, the main bearing is subjected to large loads, large torques and instantaneous high impacts. The rolling elements and raceway surfaces of the main bearings will be damaged, causing internal foreign objects to fall. The existing main bearings have no internal monitoring and foreign object removal modules. Damage to the rolling elements and raceway surfaces cannot be detected, and the fallen objects cannot be removed in time.

[0003] Due to the narrow internal space of the shield machine main bearing and its relative isolation from the outside world, once the internal rolling element or retainer is broken or the raceway is damaged, the damage cannot be discovered in time, and by the time the abnormality is discovered, serious consequences have often occurred. Due to the narrow internal space of the shield machine main bearing, once the internal rolling element is broken or the raceway is damaged, the debris cannot be discharged in time and accumulates on the raceway inside the bearing, causing repeated crushing during operation, leading to further damage to the bearing until it fails completely.

[0004] The Chinese utility model patent with announcement number CN219221034U discloses an intelligent bearing monitoring system and an intelligent bearing. The intelligent bearing monitoring system includes a first sensing module and a second sensing module. The first sensing module is installed on the fixed ring and has a wireless receiving module. The second sensing module is installed on the roller assembly and has a wireless transmitting module and a sensor integrated module. The wireless transmitting module can transmit the signal data monitored by the sensor integrated module to the wireless receiving module. The utility model can solve the problem that the monitoring equipment in the prior art is far away from the fault location inside the turntable bearing and cannot accurately reflect the vibration, temperature, speed and other operating conditions of the internal components of the turntable bearing with a closed structure. However, the utility model only has a monitoring function and does not have the functions of monitoring, transporting and cleaning internal foreign matter.

[0005] The Chinese invention patent application with publication number CN118049440A discloses a rolling state self-monitoring bearing and a working method thereof, wherein the rolling state self-monitoring bearing comprises: the rolling body is provided with a positioning unit, the positioning unit rotates synchronously with the rolling body, and is used to locate the angular position of the rolling body rotation; the retaining frame comprises a monitoring unit, a signal processing unit and a signal transmission unit, the monitoring unit is used to determine the angular position change information of the rolling body according to the angular position of the rolling body rotation located by the positioning unit; the bearing ring is provided with a signal receiving unit, and the signal receiving unit is used to receive the bearing fault signal sent by the signal transmission unit. The present invention can timely determine the abnormal rolling state of the rolling body, thereby determining the bearing fault condition, but the invention only has a monitoring function and no internal foreign matter monitoring, transportation, and cleaning functions.

[0006] The Chinese utility model patent with announcement number CN218913465U discloses a turntable bearing with a raceway status monitoring function, wherein the retaining frame is provided with a first monitoring module group, and the first monitoring module group contains an image acquisition and processing module, which can capture images of the inner raceway and the outer raceway. The turntable bearing with a raceway status monitoring function monitors the specific status of the surfaces of the inner and outer raceways at various positions during the operation of the turntable bearing in real time in an intuitive manner, and detects early whether the raceway surface has wear, pitting, rust, peeling and other failures and faults and issues timely warnings, but the utility model only has a monitoring function and does not have internal foreign matter monitoring, transportation, and cleaning functions.

[0007] A Chinese utility model patent with announcement number CN218718229U discloses a bearing and a shield machine that are easy to replace rollers. In order to solve the problem of difficulty in replacing rollers in the main bearing of the shield machine, a bearing roller replacement channel is provided in the annular side wall of the fixed ring. When the first frame bar and the bearing sealing cover plate are removed, the rollers in the pocket can pass through the bearing roller replacement channel and enter the internal cavity of the fixed ring. A bearing rolling element replacement channel is provided in the fixed ring of the bearing that is easy to replace rollers, so that the function of replacing the main bearing rollers of the shield machine in the tunnel can be easily realized. However, this utility model only has a roller entry and exit channel, no monitoring function, and no internal foreign matter monitoring, transportation, and cleaning functions.

[0008] The Chinese utility model patent with announcement number CN218863844U discloses a main bearing oil cleaning system and a tunnel boring machine. The main bearing oil cleaning system includes a main bearing, a lubricating oil pump and a lubricating oil tank. The top of the main bearing is provided with a lubricating oil inlet hole, the bottom of the main bearing is provided with a lubricating oil return hole, and the lubricating oil pump is used to pump the oil at the lubricating oil return hole and / or the oil in the lubricating oil tank into the main bearing through the lubricating oil inlet hole; the bottom of the main bearing is also provided with a cleaning oil inlet hole and a cleaning oil return hole. The main bearing oil cleaning system also includes a cleaning oil pump and a cleaning oil tank. The cleaning oil pump is used to pump the oil in the cleaning oil tank into the main bearing through the cleaning oil inlet hole and make the oil in the main bearing flow back to the cleaning oil tank through the cleaning oil return hole. The utility model can realize the cleaning of the main bearing and avoid serious abrasive wear and rust of the main bearing, but the utility model only has a flushing channel, no monitoring function, and no internal foreign matter monitoring, transportation, and cleaning functions.

[0009] The Chinese invention patent application with publication number CN114705429A discloses a monitoring method and device for the main bearing of a shield machine. The monitoring method includes: using multiple sensors arranged on the end face of the inner gear ring of the shield machine main bearing and the outer ring of the main bearing to obtain the inner gear ring monitoring signal; determining the impact monitoring result of the shield machine main bearing according to the inner gear ring monitoring signal; obtaining the operating posture data of the shield machine main bearing according to the distribution position information of each sensor and the inner gear ring monitoring signal; obtaining the monitoring result of the shield machine main bearing according to the impact monitoring result and operating posture data of the shield machine main bearing. The invention monitors and analyzes the abnormal signal in real time during the operation of the main bearing, evaluates whether the main bearing needs to be repaired or replaced, and warns of local abnormalities and excessive impact loads, accurately and timely discovers the main bearing failure, reduces the construction risk caused by the direct failure of the main bearing, and improves the reliability of the shield machine operation. However, the invention only has a monitoring function, and has no internal foreign matter transfer and cleaning functions.

[0010] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a main bearing and a tunnel boring machine, which can timely monitor the damage of the rolling elements and raceways of the main bearing, and clean out the foreign objects in time when foreign objects are detected to have fallen, so as to avoid further damage to the main bearing. Summary of the invention

[0011] The purpose of the present invention is to provide a main bearing and a tunnel boring machine, which can timely monitor the damage of rolling elements and raceways in the main bearing, and clean out foreign objects in time when foreign objects are detected to have fallen, so as to avoid further damage to the main bearing and solve the problem that the existing main bearings do not have the function of transferring and cleaning foreign objects.

[0012] The above technical objectives of the present invention are mainly achieved through the following technical solutions:

[0013] In one aspect, the present invention provides a main bearing comprising:

[0014] An inner ring and an outer ring are sleeved together, a roller chamber is formed between the inner ring and the outer ring, and a plurality of rollers are arranged in the roller chamber;

[0015] An annular track groove is provided on the inner ring or the outer ring, wherein the opening of the annular track groove faces the roller chamber;

[0016] A movable slag suction block, which is clamped in the annular track groove and can move along the annular track groove, and has a slag suction port facing the roller chamber and a sensor for monitoring impurities in the main bearing;

[0017] A slag suction channel is provided in the inner ring or the outer ring, the slag suction channel is communicated with the annular track groove and can be connected with the slag suction port;

[0018] A control unit is electrically connected to the movable slag suction block to receive a signal from the sensor and control the movement of the movable slag suction block.

[0019] In a preferred embodiment of the present invention, a slag flushing channel connected to the roller chamber is opened in the inner ring or the outer ring, and the outlet of the slag flushing channel and the inlet of the slag suction channel are respectively located on the inner and outer sides of the roller.

[0020] In a preferred embodiment of the present invention, the outlet end of the slag suction channel is connected to a vacuum suction device; and / or the inlet end of the slag flushing channel is connected to an oil supply device.

[0021] In a preferred embodiment of the present invention, a plurality of slag suction channels are provided at intervals in the inner ring or the outer ring along the circumferential direction of the main bearing; and / or a plurality of slag flushing channels are provided at intervals in the inner ring or the outer ring along the circumferential direction of the main bearing.

[0022] In a preferred embodiment of the present invention, the movable slag suction block comprises:

[0023] A main body, wherein the slag suction port and the sensor are both arranged on one side of the main body;

[0024] A plurality of magnetic rollers are rotatably arranged on the main body, and the slag suction port and the magnetic rollers are respectively located on two opposite sides of the main body.

[0025] In a preferred embodiment of the present invention, the movable slag suction block further comprises a first signal transceiver module provided on the body;

[0026] A second signal transceiver module is provided on the inner ring or the outer ring, and the second signal transceiver module is arranged adjacent to the first signal transceiver module and the two are connected by radio;

[0027] The second signal transceiver module is electrically connected to the control unit via wire.

[0028] In a preferred embodiment of the present invention, a plurality of the second signal transceiver modules are spaced apart on the inner ring or the outer ring along the circumferential direction of the main bearing.

[0029] In a preferred embodiment of the present invention, the sensor is a sonar sensor or a visual sensor.

[0030] In a preferred embodiment of the present invention, the roller chamber is provided with a main push rolling body composed of a plurality of main push rollers, an auxiliary push rolling body composed of a plurality of auxiliary push rollers, and a radial rolling body composed of a plurality of radial rollers;

[0031] The inner side walls of the outer ring corresponding to the main thrust rolling body, the auxiliary thrust rolling body and the radial rolling body are each provided with an annular track groove, and the movable slag suction block is provided in each annular track groove.

[0032] On the other hand, the present invention further provides a roadheader, comprising the main bearing as described above.

[0033] Compared with the prior art, the technical solution of the present invention has the following characteristics and advantages:

[0034] The internal conditions of the main bearing are monitored in real time during its operation, and when foreign matter enters the main bearing or internal damage occurs, the slag suction structure is used to promptly clean out dropped objects, thus avoiding large-scale damage to the main bearing and achieving the purpose of resuming excavation without dismantling the machine or overhauling it. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0036] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0037] Figure 1 is a schematic structural diagram of the main bearing of the present invention;

[0038] Figure 2 for Figure 1 Schematic diagram of the local structure of A;

[0039] Figure 3 for Figure 1 Schematic diagram of the local structure of B;

[0040] Figure 4 This is a schematic diagram of the structure of the electrical connection between the main bearing and the control unit of the present invention;

[0041] Figure 5 This is a schematic diagram of the structure of the movable slag suction block of the present invention;

[0042] Figure 6This is a schematic diagram of the wireless connection between the first signal transceiver module and the second signal transceiver module of the present invention.

[0043] Description of reference numerals:

[0044] 10. Outer ring; 11. First outer ring; 12. Second outer ring; 13. Inner ring; 14. Roller chamber; 15. Main rolling element; 16. Auxiliary rolling element; 17. Radial rolling element;

[0045] 20. Annular rail groove; 21. Slag suction channel; 22. Slag flushing channel;

[0046] 30. movable slag suction block; 31. body; 32. slag suction port; 33. sensor; 34. charging port; 35. magnetic roller; 36. first signal transceiver module;

[0047] 40. Control unit; 41. Second signal transceiver module; 42. Wire channel; 43. Wire. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0051] Implementation method 1:

[0052] like Figure 1 and Figure 2As shown, the present invention provides a main bearing, which includes an inner ring 13, an outer ring 10, an annular track groove 20, a movable slag suction block 30, a slag suction channel 21 and a control unit 40. The inner ring 13 and the outer ring 10 are sleeved together, and a roller chamber 14 is formed between the inner ring 13 and the outer ring 10, and a plurality of rollers are arranged in the roller chamber 14; the annular track groove 20 is provided on the inner ring 13 or the outer ring 10, and the opening of the annular track groove 20 faces the roller chamber 14; the movable slag suction block 30 is clamped in the annular track groove 20 and can move along the annular track groove 20, and the movable slag suction block 30 has a slag suction port 32 facing the roller chamber 14 and a sensor 33 for monitoring impurities in the main bearing; the slag suction channel 21 is provided in the inner ring 13 or the outer ring 10, and the slag suction channel 21 is communicated with the annular track groove 20 and can be connected with the slag suction port 32; the control unit 40 is electrically connected to the movable slag suction block 30 to receive the signal of the sensor 33 and control the movement of the movable slag suction block 30.

[0053] The main bearing described in the present invention monitors the internal condition of the main bearing in real time during its operation through the sensor 33 on the movable slag suction block 30, and promptly cleans out dropped objects through the slag suction port 32 and the slag suction channel 21 when foreign matter is generated inside the main bearing or internal damage occurs, thereby avoiding large-scale damage to the main bearing and achieving the purpose of resuming excavation without dismantling the machine or overhauling it.

[0054] The specific structure of each part of the main bearing of the present invention, as well as the position and connection relationship between the parts will be described in detail below.

[0055] like Figure 1 As shown, the inner ring 13, the outer ring 10 and the roller are the basic structure of the main bearing, the outer ring 10 is rotatably sleeved on the outer circumference of the inner ring 13, an annular roller chamber 14 for installing the roller is formed between the outer ring 10 and the inner ring 13, and a rolling body composed of multiple rollers is installed in the roller chamber 14. The basic rotary structure of the main bearing in the shield machine is basically the same as the structure of the existing roller bearing, and the specific structure of the inner ring 13, the outer ring 10 and the roller is not further described here.

[0056] like Figure 1 , Figure 2 and Figure 5As shown, an annular track groove 20 extending along the circumferential direction of the outer ring 10 is provided on the inner side of the outer ring 10 facing the roller chamber 14, the opening of the annular track groove 20 is connected with the roller chamber 14, and a movable slag suction block 30 is installed in the annular track groove 20, and the movable slag suction block 30 is used to absorb foreign matter in the roller chamber 14; at the same time, the movable slag suction block 30 can move along the annular track groove 20 driven by its own power structure, and the movable slag suction block 30 can move to any position in the circumferential direction of the main bearing, and then absorb foreign matter at different positions. In this embodiment, the movable slag suction block 30 is clamped and installed in the annular track groove 20, a limiting protrusion is formed on the annular track groove 20, and a limiting groove is provided on the movable slag suction block 30, and the movable slag suction block 30 is prevented from falling from the annular track groove 20 by the cooperation of the limiting protrusion and the limiting groove. Of course, in other embodiments of the present invention, the annular track groove 20 may also be provided on the outer side surface of the inner ring 13 facing the roller chamber 14 .

[0057] In order to achieve the adsorption of impurities in the roller chamber 14, the movable slag suction block 30 has a slag suction port 32 facing the roller chamber 14, and a chamber for temporarily accommodating impurities is formed in the slag suction port 32, and the impurities entering the slag suction port 32 can be temporarily stored in the chamber. As for the slag suction method of the slag suction port 32, a magnetic suction method can be adopted (because the impurities in the roller chamber 14 are usually ferromagnetic materials), such as an electromagnet is set at the slag suction port 32, and a vacuum suction method can also be adopted, such as a vacuum suction pump is set at the slag suction port 32.

[0058] In order to realize real-time monitoring of the state in the roller chamber 14, a sensor 33 for monitoring impurities in the main bearing is provided on the movable slag suction block 30. The sensor 33 can be a sonar sensor; when there is no damage inside the main bearing, the normal signal generated is regular. When there is damage inside the main bearing, such as raceway peeling, rolling element crushing, cage breakage, etc., the fallen parts are foreign objects of different shapes and sizes, and gather between the cage segments or in the roller gap. When the sonar sensor detects abnormal frequency and abnormal distance signals, it can feedback to the control unit 40, thereby starting the slag suction operation. The sensor 33 can also be a visual sensor (machine vision camera). When the machine vision camera captures an abnormal picture, it can feedback to the control unit 40, thereby starting the slag suction operation.

[0059] Further, such as Figure 1 and Figure 2As shown, a slag suction channel 21 is provided in the outer ring 10, and the inlet end of the slag suction channel 21 is connected to the ring track groove 20, and when the movable slag suction block 30 moves to the position of the slag suction channel 21, the inlet of the slag suction channel 21 can be connected to the slag suction port 32 of the movable slag suction block 30, and the impurities temporarily stored in the slag suction port 32 can enter the slag suction channel 21 under the action of external force. The outlet end of the slag suction channel 21 extends to the outside of the end of the outer ring 10, and the outlet end of the slag suction channel 21 is connected to a vacuum suction device (not shown in the figure), which can generate vacuum negative pressure and then discharge the impurities in the slag suction port 32 to the outside of the main bearing through the slag suction channel 21. If the ring track groove 20 is provided on the inner ring 13, the slag suction channel 21 is also provided in the inner ring 13.

[0060] Preferably, along the circumferential direction of the main bearing, a plurality of slag suction channels 21 are spaced apart inside the outer ring 10, and the plurality of slag suction channels 21 provide a plurality of slag discharge positions for the movable slag suction block 30. The movable slag suction block 30 can select the nearest slag suction channel 21 for slag discharge, thereby improving the slag discharge efficiency.

[0061] Further, such as Figure 4 As shown, the main bearing is also provided with a control unit 40, and the control unit 40 can be electrically connected to the movable slag suction block 30 through a wire 43, and the sensor 33 can transmit the monitored signal to the control unit 40, and the control unit 40 can monitor and judge the state of the roller chamber 14 according to the above signal. If there is an abnormality in the roller chamber 14, a command signal is sent to the movable slag suction block 30, and then the movable slag suction block 30 is controlled to move to the abnormal position to perform the slag suction operation.

[0062] The structure and technology of the preferred embodiment of the main bearing of the present invention will be further described below.

[0063] According to one embodiment of the present invention, Figure 1 As shown, a slag flushing channel 22 connected to the roller chamber 14 is provided in the outer ring 10, and the outlet of the slag flushing channel 22 and the inlet of the slag suction channel 21 are respectively located on the inner and outer sides of the roller, and the inlet end of the slag flushing channel 22 is connected to an oil supply device (not shown in the figure). The oil supply device can pass high-pressure oil into the roller chamber 14 through the slag flushing channel 22. Since the outlet of the slag flushing channel 22 and the inlet of the slag suction channel 21 are respectively located on both sides of the roller, the high-pressure oil flowing out of the outlet of the slag flushing channel 22 can flow toward the inlet direction of the slag suction channel 21, thereby generating an impact force on the impurities in the roller chamber 14, so as to assist the slag suction port 32 in sucking slag, and suck the impurities into the slag suction port 32 in a "suction and flushing" manner, thereby improving the slag suction effect of the slag suction port 32.

[0064] After the presence of impurities in the roller chamber 14 is detected during the monitoring process by the sensor 33 and the control unit 40, the tunnel boring machine stops normal excavation and enters the slag cleaning process. At this time, the tunnel boring machine runs without load, slowly rotates the inner ring 13 of the main bearing, and then identifies and cleans the slag. Impurities are generally sandwiched between the gaps of the rolling elements or the gaps between the rolling elements and the retaining frame. As the inner ring 13 of the main bearing rotates, the rolling elements also rotate, and the impurities also rotate synchronously. During this process, the sensor 33 is always in the position of monitoring impurities during the working process. When the impurities rotate to face the slag flushing channel 22, the movable slag suction block 30 also actively moves to the slag suction port 32 to face the impurities. Under the action of the high-pressure oil in the slag flushing channel 22, the impurities in the roller chamber 14 are flushed into the slag suction port 32.

[0065] Preferably, along the circumferential direction of the main bearing, a plurality of slag flushing channels 22 are spaced apart in the outer ring 10. The plurality of slag flushing channels 22 provide a plurality of slag flushing positions for the movable slag suction block 30. When the movable slag suction block 30 is used to suck slag, the slag flushing channel 22 can be selected nearby for auxiliary slag discharge, thereby improving the slag discharge efficiency.

[0066] According to one embodiment of the present invention, Figure 5 As shown, the movable slag suction block 30 includes a body 31 and a plurality of magnetic rollers 35. The slag suction port 32 and the sensor 33 are both arranged on one side of the body 31; the plurality of magnetic rollers 35 are rotatably arranged on the body 31, and the slag suction port 32 and the magnetic rollers 35 are respectively located on opposite sides of the body 31. A driving device for driving the magnetic rollers 35 to rotate is arranged in the body 31, and the rotation of the magnetic rollers 35 can make the movable slag suction block 30 move along the ring track groove 20. The magnetic rollers 35 can be electromagnets, which are magnetically adsorbed on the ring track groove 20 after being energized, thereby improving the stability of the movable slag suction block 30 in the ring track groove 20.

[0067] Better, such as Figure 5 As shown, the movable slag suction block 30 is also provided with a charging port 34 for charging and supplying energy.

[0068] Further, such as Figure 1 , Figure 3 and Figure 6 As shown, the movable slag suction block 30 also includes a first signal transceiver module 36 arranged on the main body 31; a second signal transceiver module 41 is provided on the outer ring 10, and the second signal transceiver module 41 is arranged adjacent to the first signal transceiver module 36 and the two are wirelessly connected; the second signal transceiver module 41 is electrically connected to the control unit 40 by wire.

[0069] Since the movable slag suction block 30 needs to move along the ring track groove 20, it is not suitable to directly connect to the control unit 40 by wired electrical connection. In addition, the distance between the movable slag suction block 30 and the control unit 40 is relatively far. If a wireless connection is directly used, the stability of the signal cannot be guaranteed. Therefore, a first signal transceiver module 36 is set on the movable slag suction block 30, and a mounting groove is opened at a position adjacent to the ring track groove 20 on the inner side surface of the outer ring 10. A second signal transceiver module 41 is installed in the mounting groove. The first signal transceiver module 36 and the second signal transceiver module 41 can communicate wirelessly. A wire channel 42 is opened at a position corresponding to the mounting groove in the outer ring 10, and a wire 43 arranged in the wire channel 42 electrically connects the second signal transceiver module 41 and the control unit 40.

[0070] Better, such as Figure 1 and Figure 6 As shown, along the circumferential direction of the main bearing, a plurality of second signal transceiver modules 41 are spaced apart on the inner ring 13 or the outer ring 10. The plurality of second signal transceiver modules 41 provide a plurality of wireless communication positions for the movable slag suction block 30, thereby improving the efficiency and stability of signal transmission.

[0071] According to one embodiment of the present invention, Figure 1 As shown, a main push rolling body 15 composed of a plurality of main push rollers, an auxiliary push rolling body 16 composed of a plurality of auxiliary push rollers, and a radial rolling body 17 composed of a plurality of radial rollers are arranged in the roller chamber 14; an annular track groove 20 is provided on the inner side wall of the outer ring 10 corresponding to the main push rolling body 15, the auxiliary push rolling body 16 and the radial rolling body 17, and a movable slag suction block 30 is provided in each annular track groove 20.

[0072] like Figure 1 As shown, in this embodiment, only one annular track groove 20 is provided in the main bearing, and the annular track groove 20 is provided on the inner side surface of the outer ring 10 corresponding to the main thrust rolling element 15. In other embodiments of the present invention, in order to improve the adsorption of impurities at different positions in the roller chamber 14, the annular track groove 20 can also be provided on the inner side surface of the outer ring 10 corresponding to the auxiliary thrust rolling element 16, and can also be provided on the inner side surface of the outer ring 10 corresponding to the radial rolling element 17; in the above embodiments, only the setting positions of the annular track groove 20, the movable slag suction block 30 and the slag suction channel 21 are different, and other structures are the same, so the detailed structure of the above embodiments will not be described in detail.

[0073] Implementation method 2:

[0074] The present invention also provides a tunnel boring machine, in which a main bearing as described in the first embodiment is provided; the technical effect of the main bearing in the tunnel boring machine has been described above and will not be repeated here.

[0075] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A main bearing, characterized in that: include: An inner ring (13) and an outer ring (10) are sleeved together, a roller chamber (14) is formed between the inner ring (13) and the outer ring (10), and a plurality of rollers are arranged in the roller chamber (14); An annular track groove (20) is provided on the inner ring (13) or the outer ring (10), wherein the opening of the annular track groove (20) faces the roller chamber (14); a movable slag suction block (30), the movable slag suction block (30) being fixed in the annular track groove (20) and being movable along the annular track groove (20), the movable slag suction block (30) having a slag suction port (32) facing the roller chamber (14) and a sensor (33) for monitoring impurities in the main bearing; A slag suction channel (21) is provided in the inner ring (13) or the outer ring (10), wherein the slag suction channel (21) is connected to the annular track groove (20) and can be connected to the slag suction port (32); A control unit (40) is electrically connected to the movable slag suction block (30) to receive a signal from the sensor (33) and control the movement of the movable slag suction block (30).

2. The main bearing according to claim 1, characterized in that: A slag flushing channel (22) connected to the roller chamber (14) is provided in the inner ring (13) or the outer ring (10), and an outlet of the slag flushing channel (22) and an inlet of the slag suction channel (21) are respectively located on the inner and outer sides of the roller.

3. The main bearing according to claim 2, characterized in that: The outlet end of the slag suction channel (21) is connected to a vacuum suction device; and / or the inlet end of the slag flushing channel (22) is connected to an oil supply device.

4. The main bearing according to claim 2 or 3, characterized in that: Along the circumferential direction of the main bearing, a plurality of slag suction channels (21) are spaced apart inside the inner ring (13) or the outer ring (10); and / or, along the circumferential direction of the main bearing, a plurality of slag flushing channels (22) are spaced apart inside the inner ring (13) or the outer ring (10).

5. The main bearing according to claim 1 or 2, characterized in that: The movable slag suction block (30) comprises: A body (31), the slag suction port (32) and the sensor (33) are both arranged on one side of the body (31); A plurality of magnetic rollers (35) are rotatably arranged on the body (31); the residue suction port (32) and the magnetic rollers (35) are respectively located on opposite sides of the body (31).

6. The main bearing according to claim 5, characterized in that: The movable slag suction block (30) further comprises a first signal transceiver module (36) arranged on the body (31); A second signal transceiver module (41) is provided on the inner ring (13) or the outer ring (10), and the second signal transceiver module (41) is arranged adjacent to the first signal transceiver module (36) and the two are connected by radio; The second signal transceiver module (41) is electrically connected to the control unit (40) via wire.

7. The main bearing according to claim 6, characterized in that Along the circumferential direction of the main bearing, a plurality of the second signal transceiver modules (41) are arranged at intervals on the inner ring (13) or the outer ring (10).

8. The main bearing according to claim 1, characterized in that The sensor (33) is a sonar sensor or a visual sensor.

9. The main bearing according to claim 1, characterized in that: The roller chamber (14) is provided with a main push rolling body (15) composed of a plurality of main push rollers, an auxiliary push rolling body (16) composed of a plurality of auxiliary push rollers, and a radial rolling body (17) composed of a plurality of radial rollers; The outer ring (10) is provided with an annular track groove (20) on the inner side wall corresponding to the main push rolling body (15), the auxiliary push rolling body (16) and the radial rolling body (17), and each annular track groove (20) is provided with a movable slag suction block (30).

10. A tunnel boring machine, characterized in that: The roadheader comprises a main bearing according to any one of claims 1-9.

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