Bearing replacing device

Abstract

The utility model provides a bearing replacement device which is used for a heading machine and is used for replacing a bearing on a main drive, the main drive is connected to a cutter head, and the bearing replacement device comprises a driving part and a supporting part; the driving piece and the supporting piece are arranged at intervals in the axial direction of the heading machine, and the driving piece is located on the side, close to the cutter head, of the supporting piece; one end of the driving piece is used for being connected with a main drive, and the other end of the driving piece is connected with the supporting piece. The driving part is configured to pull the main drive in the first direction to form a separation state of the main drive and the cutter head, and the driving part is further configured to push the main drive in the second direction to form a connection state of the main drive and the cutter head; the first direction and the second direction are opposite directions in the axial direction of the heading machine. The main drive can be integrally pulled out to be separated from the shield body without dismantling the shield body, so that the work of overhauling or replacing the main bearing in a hole is realized, the use safety performance of equipment is effectively enhanced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of tunnel boring machine technology, and in particular to a bearing replacement device. Background Technology

[0002] A tunnel boring machine (TBM) is a type of engineering machinery specifically designed for tunnel excavation. It can excavate underground under precise computer control according to different geological conditions, and after assembling segments at the tail end, a high-quality tunnel can be formed.

[0003] As a key component connecting the cutterhead system and the power system, the main bearing of a tunneling machine directly affects the construction safety of the machine. In related technologies, during tunneling machine construction, especially in long-distance, complex geological conditions, or when it is necessary to disassemble and inspect the main bearing, a critical component of the main drive, inside the tunnel, or to replace it, the shield body must be removed to allow for the hoisting, turning, and disassembly of the main drive unit. This is not feasible in conventional structures.

[0004] Therefore, developing a device for replacing the main drive bearing without disassembling the shield body has become an urgent problem to be solved. Utility Model Content

[0005] The embodiments of this application provide a bearing replacement device that can pull the main drive assembly out of the shield without removing the shield, thereby enabling the disassembly or replacement of the main bearing inside the tunnel, effectively enhancing the safety performance of the equipment and extending its service life.

[0006] To achieve the above objectives, embodiments of this application provide a bearing replacement device for a tunneling machine, for replacing bearings on the main drive, wherein the main drive is connected to the cutterhead, and the bearing replacement device includes a drive component and a support component.

[0007] Along the axial direction of the tunneling machine, the driving component and the support component are spaced apart, with the driving component located on the side of the support component closer to the cutterhead;

[0008] One end of the driving component is used to connect to the main drive, and the other end of the driving component is connected to the support component;

[0009] The drive member is configured to pull the main drive along a first direction to form a disengaged state between the main drive and the cutter head; the drive member is also configured to push the main drive along a second direction to form a connected state between the main drive and the cutter head.

[0010] The first direction and the second direction are opposite directions along the axial direction of the tunneling machine.

[0011] In one possible implementation, a moving area is provided between the drive member and the support member along the axial direction of the tunneling machine, the moving area being configured for reciprocating movement of the main drive.

[0012] In one possible implementation, a plurality of limiting members are also included, distributed on both sides of the drive member along the radial direction of the tunneling machine, the limiting members being used to limit the drive member during movement.

[0013] In one possible implementation, the drive unit comprises a plurality of drive units; along the radial direction of the tunneling machine, the plurality of drive units are distributed on both sides of the main drive; and / or, along the axial direction of the tunneling machine, the plurality of drive units are connected in sequence.

[0014] In one possible implementation, a slider is also included, which is disposed at the bottom of the main drive, and the main drive reciprocates relative to the slider.

[0015] In one possible implementation, the number of sliding elements includes multiple sliding elements; along the radial direction of the tunneling machine, multiple sliding elements are located on both sides of the main drive; and / or, along the axial direction of the tunneling machine, multiple sliding elements are connected in sequence.

[0016] In one possible implementation, a buffer is also included, which is disposed at the connection between the drive member and the support member;

[0017] And / or, quick connectors are provided at both ends of the drive component, and the drive component is connected to the main drive and the support component through the quick connectors.

[0018] In one possible implementation, a lifting component is also included, which is disposed on the side of the support member away from the cutter head;

[0019] The lifting device is configured to lift the pulled-out main drive.

[0020] In one possible implementation, the lifting device includes an electric hoist and a lifting rope. The electric hoist provides lifting power, one end of the lifting rope is connected to the electric hoist, and the other end is connected to the main drive. The lifting rope is provided with multiple lifting rings for adjusting the lifting position and angle.

[0021] In one possible implementation, the drive element includes a telescopic cylinder; and / or, the support element includes an H-frame; and / or, the slider includes a slide rail.

[0022] The bearing replacement device provided in this application includes a drive component and a support component. The drive component connects the main drive and the support component. In this way, on the one hand, the main drive can be pulled out and detached from the shield without removing the shield body, thereby realizing the work of disassembling or replacing the main bearing inside the tunnel, effectively enhancing the safety performance of the equipment and extending its service life. On the other hand, in long-distance tunneling, the main bearing can be inspected or replaced inside the tunnel, improving and ensuring the overall performance of the equipment.

[0023] The structure of this application, as well as its other objectives and beneficial effects, will become more apparent from the description of the preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the bearing replacement device provided in the embodiments of this application;

[0026] Figure 2 A schematic diagram of the drive component, support component, and moving area of ​​the bearing replacement device provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the drive component, support component, moving area, and sliding component of the bearing replacement device provided in the embodiments of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100-Driver;

[0030] 200 - Support component;

[0031] 300-Slider;

[0032] 400-Cutterhead;

[0033] 500-shield;

[0034] 600-Main Drive;

[0035] 700 - Main bearing;

[0036] 800 - Moving Zone. Detailed Implementation

[0037] During tunneling machine construction, in long-distance, complex geological conditions, or when it is necessary to disassemble and inspect the main drive's key component, the main bearing, inside the tunnel for replacement, the shield body must be removed before the main drive can be hoisted, turned over, and disassembled. The disassembly and replacement process is cumbersome, time-consuming, and labor-intensive.

[0038] Based on the aforementioned technical problems, this application provides a bearing replacement device that includes a drive component and a support component. The drive component connects the main drive and the support component. In this way, on the one hand, the main drive can be pulled out and detached from the shield without dismantling the shield, thereby enabling the inspection or replacement of the main bearing inside the tunnel, effectively enhancing the safety performance of the equipment and extending its service life. On the other hand, during long-distance tunneling, the main bearing can be inspected or replaced inside the tunnel, improving and ensuring the overall performance of the equipment.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] This application provides a bearing replacement device for a tunneling machine.

[0041] Specifically, refer to Figure 1 As shown, the tunneling machine includes a cutterhead 400 and a shield 500. The cutterhead 400 is connected to the shield 500 and is located at the tunneling end of the tunneling machine. The main drive 600 is located on the shield 500 and connected to the cutterhead 400. The main bearing 700 is disposed on the main drive 600. In this embodiment, the bearing replacement device is mainly used to replace the main bearing 700 of the main drive 600.

[0042] The main drive 600 is a device that provides rotational power to the cutterhead 400, and it is mounted on the shield body 500. The main drive 600 is connected to the cutterhead 400 through mechanical transmission components (such as gears, shafts, etc.), transmitting power to the cutterhead 400 so that it can rotate at a set speed and torque to complete the excavation task.

[0043] The main bearing 700 is a key component of the main drive 600, primarily serving to provide support and reduce friction. The main bearing 700 allows the cutterhead 400 to rotate relative to the main drive 600, while simultaneously bearing various loads generated by the cutterhead 400 during operation (such as axial force, radial force, and torque), ensuring the stable rotation of the cutterhead 400 and the normal operation of the tunneling machine.

[0044] During long-term operation, the main bearing 700 is subject to wear, fatigue, and other factors, which may lead to performance degradation or even failure. To ensure the normal operation and efficiency of the tunneling machine, the main bearing 700 needs to be inspected and replaced regularly.

[0045] In the embodiments of this application, reference is made to Figure 1 As shown, the bearing replacement device may include a drive component 100 and a support component 200; wherein, along the axial direction of the tunneling machine, the drive component 100 and the support component 200 are spaced apart, and the drive component 100 is located on the side of the support component 200 near the cutterhead 400; wherein, one end of the drive component 100 is used to connect to the main drive 600, and the other end of the drive component 100 is connected to the support component 200.

[0046] For example, the drive component 100 can be a hydraulic drive device, an electric drive device, etc. This embodiment does not limit this. For example, the drive component 100 in this embodiment can be a telescopic cylinder.

[0047] The support component 200 provides a stable support foundation for the drive component 100. During the process of the drive component 100 pulling or pushing the main drive 600, the support component 200 can withstand the corresponding reaction force, ensuring the stability of the entire replacement device. For example, the support component 200 can be an H-frame, which is a support structure with sufficient strength and rigidity, and is reasonably designed and installed according to the internal spatial layout and load-bearing requirements of the tunneling machine.

[0048] The drive component 100 is configured to pull the main drive 600 along the first direction A, thereby disengaging the main drive 600 from the cutter head 400. At this time, the main bearing 700 can be disassembled and replaced.

[0049] The drive unit 100 is also configured to advance the main drive 600 along the second direction B, forming a connection between the main drive 600 and the cutter head 400.

[0050] The first direction A and the second direction B are opposite to the tunneling machine's axial direction. It can be understood that the first direction A is opposite to the tunneling direction of the tunneling machine, while the second direction B is the same as the tunneling direction of the tunneling machine.

[0051] In this way, by including the drive component 100 and the support component 200, with the drive component 100 connecting the main drive 600 and the support component 200, the main drive 600 can be pulled out and detached from the shield body 500 without dismantling the shield body 500. This allows for the inspection or replacement of the main bearing 700 inside the tunnel, effectively enhancing the safety performance of the equipment and extending its service life. On the other hand, during long-distance tunneling, the main bearing 700 can be inspected or replaced inside the tunnel, improving and ensuring the overall performance of the equipment.

[0052] In one possible implementation, refer to Figure 2 As shown, along the axial direction of the tunneling machine, there is a moving area 800 between the drive member 100 and the support member 200, and the moving area 800 is configured to allow the main drive 600 to reciprocate.

[0053] Understandably, the drive component 100 and the support component 200 are spaced apart, and the space between them forms the moving area 800. Since the main drive 600 is connected to the cutterhead 400, sufficient space is needed to disengage and reconnect with the cutterhead 400 during operations such as bearing replacement. At this time, under the action of the drive component 100, the main drive 600 can reciprocate along the axial direction of the tunneling machine within this moving area 800.

[0054] Therefore, the positioning of the moving zone 800 provides a clearly defined spatial range for the reciprocating movement of the main drive 600. During bearing replacement, the main drive 600 moves within this area, avoiding interference and collisions with other surrounding components and ensuring the safety of the main drive 600 and other parts of the tunneling machine. Simultaneously, it provides operators with clear operating space boundaries, reducing the risk of errors caused by unclear space during operation and improving operational safety and reliability.

[0055] In one possible implementation, multiple limiting members may also be included, distributed on both sides of the moving area 800 along the radial direction of the tunneling machine. The limiting members are used to limit the movement of the drive member 100.

[0056] For example, the limiting component can be a limiting block, which is fixedly installed at appropriate positions on both sides of the driving component 100, such as on the frame of the tunneling machine or other fixed components. When the driving component 100 reaches the set limit position during movement, it will contact the limiting block, thereby preventing the driving component 100 from continuing to move and playing a limiting role.

[0057] Alternatively, the limiting component can be a limiting pin. For example, the limiting pin can be fixedly installed on the fixing components on both sides of the driving component 100, and the driving component 100 is provided with corresponding pin holes. When the driving component 100 moves to the appropriate position, the limiting pin is inserted into the pin hole of the driving component 100 to limit the driving component 100.

[0058] In this way, the setting of the limiting component can restrict the offset of the drive component 100 during the movement process, so that it can only move in a specified direction and range. This can effectively avoid uneven force on the main drive 600 or incorrect movement trajectory due to movement deviation of the drive component 100, thereby improving the accuracy of the connection and disengagement between the main drive 600 and the cutterhead 400, and ensuring the normal operation of the tunneling machine's main drive 600 system.

[0059] In one possible implementation, the drive unit 100 may include multiple units. In some embodiments, the multiple drive units 100 may be distributed on both sides of the main drive 600 along the radial direction of the tunneling machine; or, in some embodiments, the multiple drive units 100 are connected in sequence along the axial direction of the tunneling machine.

[0060] It is understandable that the radial direction of the tunneling machine is perpendicular to the tunneling direction.

[0061] In this way, by setting multiple drive components 100, compared with a single drive component 100, when a single drive component 100 pulls the main drive 600 away from the cutterhead 400 or pushes the main drive 600 to connect with the cutterhead 400, the main drive 600 may deviate during movement due to uneven force, affecting the separation and connection accuracy between the main drive 600 and the cutterhead 400. However, multiple drive components 100 are distributed radially along the tunneling machine, which can apply force evenly from different positions, effectively preventing the main drive 600 from deviating or tilting when moving along the tunneling machine axis. This allows the main drive 600 to maintain a stable movement trajectory during the process of separating from or connecting with the cutterhead 400, improving the connection and separation accuracy between the main drive 600 and the cutterhead 400, ensuring the accurate relative position of the main drive 600 and the cutterhead 400, and thus ensuring the normal operation and performance of the tunneling machine's main drive 600 system.

[0062] In one possible implementation, refer to Figure 1 and Figure 3 As shown, it may also include a slider 300, which is disposed at the bottom of the main drive 600, and the main drive 600 slides relative to the slider 300 in a first direction or a second direction.

[0063] For example, the slider 300 can be a linear guide rail.

[0064] In this way, by setting up the sliding component 300, on the one hand, the sliding friction of the sliding component 300 can be significantly reduced during the movement, greatly reducing the degree of wear and thus extending the service life of the main drive 600 and the support structure; on the other hand, the sliding of the main drive 600 relative to the sliding component 300 makes the bearing replacement process more convenient, and the operator can more easily control the movement of the main drive 600, reducing the difficulty of operation and labor intensity.

[0065] In one possible implementation, refer to Figure 3 As shown, the number of sliders 300 can be multiple. There is no limit to the number of sliders 300, and the specific number can be set according to the actual situation.

[0066] In some embodiments, multiple sliding members 300 are located on both sides of the main drive 600 along the radial direction of the tunneling machine. This arrangement is intended to provide multi-point support in the width direction of the main drive 600, ensuring the stability of the main drive 600 during sliding.

[0067] In some embodiments, multiple sliding members 300 are connected sequentially along the axial direction of the tunneling machine. This connection method allows the sliding members 300 to provide continuous support along the travel stroke of the main drive 600, meeting the needs of the main drive 600 to reciprocate within a large travel range.

[0068] By setting up over 300 different distributions and connection methods for the sliding components, this device can adapt to main drives 600 of different specifications and structures, improving its versatility. In practical use, the settings of the sliding components 300 can also be flexibly adjusted according to specific working scenarios and operational requirements, enhancing the device's flexibility and adaptability, and reducing the cost for equipment manufacturers to design dedicated replacement devices for different main drives 600.

[0069] In one possible implementation, a buffer may also be included, which is disposed at the connection between the drive member 100 and the support member 200.

[0070] For example, the buffer can be a rubber cushioning pad; or, the buffer can be an elastic washer, etc. This embodiment does not limit this.

[0071] Thus, the buffer is designed so that when the drive component 100 is working, it applies tensile or pushing forces to the support component 200. These forces may generate significant impacts during transmission. The buffer's function is to buffer and dampen the impact between the drive component 100 and the support component 200, mitigating the impact during force transmission and protecting the connection points and related structural components of the drive component 100 and the support component 200.

[0072] In this embodiment, quick connectors can be provided at both ends of the drive member 100, and the drive member 100 is connected to the main drive 600 and the support member 200 through the quick connectors.

[0073] A quick coupling is a component that allows for rapid connection and disconnection. When bearing replacement is required, it quickly connects the drive unit 100 to the main drive 600 and the support unit 200, enabling the drive unit 100 to apply force to the main drive 600. After the operation is completed, it can be quickly disconnected, facilitating equipment disassembly and maintenance. This connection method improves operational convenience and efficiency.

[0074] In one possible implementation, a lifting device may also be included, which is disposed on the side of the support 200 away from the cutterhead 400; the lifting device is configured to lift the pulled-out main drive 600.

[0075] Understandably, during the bearing replacement operation on the main drive 600 of the tunneling machine, the drive component 100 pulls the main drive 600 in the first direction, disengaging it from the cutterhead 400 and placing it in a disengaged state. At this point, the disengaged main drive 600 requires further processing, such as being moved to a suitable location for bearing removal and replacement. The lifting component is used to lift the disengaged main drive 600. By connecting lifting equipment (such as a crane or hoist) to the lifting component, the main drive 600 can be lifted and moved using the lifting equipment, thus completing the subsequent bearing replacement workflow.

[0076] In this way, the main drive 600 can be easily moved from its original position to a suitable working area by hoisting, which makes it convenient for maintenance personnel to disassemble, replace and install the bearings on the main drive 600. This greatly improves the convenience and efficiency of bearing replacement work and reduces the difficulty and labor intensity of manual handling.

[0077] In one possible implementation, the lifting device includes an electric hoist and a lifting rope, the electric hoist being used to provide lifting power, and one end of the lifting rope being connected to the electric hoist and the other end being connected to the main drive 600.

[0078] For example, an electric hoist is a power-providing device that generally includes components such as a motor, a reducer, and a drum. It drives the drum to rotate via a motor, which reduces the speed and increases the torque, thereby achieving lifting and lowering actions and providing the necessary power for the main hoisting drive 600.

[0079] The hoisting rope is a key component connecting the electric hoist and the main drive 600. One end is connected to the drum or hook of the electric hoist, allowing the rope to be wound up and down as the drum rotates; the other end is securely connected to the main drive 600, ensuring reliable lifting and lowering of the main drive 600 when the electric hoist provides power. During bearing replacement operations on the main drive 600 of the tunneling machine, after the drive unit 100 pulls the main drive 600 out from the cutterhead 400, the electric hoist and hoisting rope can be used to lift the main drive 600 from its original position and move it to a suitable location, facilitating subsequent bearing disassembly and replacement.

[0080] The detailed operating steps of the bearing replacement device provided in this embodiment are as follows:

[0081] Secure the cutterhead 400 and disconnect all connections from the main drive 600; dismantle and retract the remaining components at the rear of the main drive 600, such as the segment assembler, center cone, and rear accessories, to provide sufficient operating space for dismantling the main drive 600; extend the sliding track between the main drive 600 and the bottom of the shield 500 backward, and slowly pull the main drive 600 backward until it detaches from the shield 500 using the telescopic cylinder; hoist and turn the main drive 600 individually, and complete the dismantling of the main drive 600 and the inspection or replacement of the main bearing 700; reassemble the main drive 600 and hoist it onto the extended telescopic sliding track of the shield 500, and push the main drive 600 forward completely into the shield 500 using the telescopic cylinder; restore the connection between the cutterhead 400 and the main drive 600, and resume tunneling for all other components.

[0082] The bearing replacement device provided in this application includes a drive component and a support component. The drive component connects the main drive and the support component. In this way, on the one hand, the main drive can be pulled out and detached from the shield without removing the shield body, thereby realizing the work of disassembling or replacing the main bearing inside the tunnel, effectively enhancing the safety performance of the equipment and extending its service life. On the other hand, in long-distance tunneling, the main bearing can be inspected or replaced inside the tunnel, improving and ensuring the overall performance of the equipment.

[0083] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0084] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0085] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A bearing replacement device, characterized in that, For use in tunneling machines, the bearing replacement device includes a drive component and a support component; Along the axial direction of the tunneling machine, the driving component and the support component are spaced apart. One end of the driving component is used to connect to the main drive on the cutterhead, and the other end of the driving component is connected to the support component. The driving member is configured to pull the main drive along a first direction to form a disengaged state between the main drive and the cutter head; the driving member is also configured to push the main drive along a second direction to form a connected state between the main drive and the cutter head. The first direction and the second direction are opposite directions along the axial direction of the tunneling machine.

2. The bearing replacement device according to claim 1, characterized in that, Along the axial direction of the tunneling machine, there is a moving area between the drive member and the support member, the moving area being configured for the main drive to reciprocate.

3. The bearing replacement device according to claim 2, characterized in that, It also includes multiple limiting components, which are distributed on both sides of the moving area along the radial direction of the tunneling machine. The limiting components are used to limit the movement of the driving component.

4. The bearing replacement device according to claim 1, characterized in that, The driving components include multiple components; Along the radial direction of the tunneling machine, a plurality of the drive components are distributed on both sides of the main drive; And / or, along the axial direction of the tunneling machine, a plurality of the drive components are connected in sequence.

5. The bearing replacement device according to claim 1, characterized in that, It also includes a slider, which is disposed at the bottom of the main drive, and the main drive reciprocates relative to the slider.

6. The bearing replacement device according to claim 5, characterized in that, The number of sliding components includes multiple components; Along the radial direction of the tunneling machine, a plurality of the sliding elements are located on both sides of the main drive; And / or, along the axial direction of the tunneling machine, a plurality of the sliding elements are connected in sequence.

7. The bearing replacement device according to claim 1, characterized in that, It also includes a buffer component, which is disposed at the connection between the drive component and the support component; And / or, quick connectors are provided at both ends of the drive component, and the drive component is connected to the main drive and the support component respectively through the quick connectors.

8. The bearing replacement device according to claim 1, characterized in that, It also includes a lifting device disposed on the support member; the lifting device is configured to lift the pulled-out main drive.

9. The bearing replacement device according to claim 8, characterized in that, The lifting device includes an electric hoist and a lifting rope. The electric hoist is used to provide lifting power, and one end of the lifting rope is connected to the electric hoist and the other end is connected to the main drive.

10. The bearing replacement device according to claim 5, characterized in that, The driving component includes a telescopic hydraulic cylinder; and / or, the supporting component includes an H-frame; and / or, the sliding component includes a slide rail.

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