A dynamic balance adjusting device of a high-performance shield machine cutter

Abstract

This utility model belongs to the field of tunnel boring machine (TBM) technology, specifically relating to a high-efficiency dynamic balance adjustment device for the cutter head of a TBM. It solves the problem that existing TBM cutter head balance adjustment devices are difficult to accurately adjust according to the real-time operating status of the cutter head, leading to eccentricity and swaying during high-speed operation, affecting tunneling efficiency and tunnel excavation quality. The device includes a housing with a mounting base fixedly installed on its inner wall, and a bearing seat fixedly installed on the outer surface of the mounting base. A dynamic balance mechanism consisting of three support seats, a hydraulic cylinder, an arc plate, a spring, and an adjusting plate is used. The extension and retraction of the hydraulic cylinder drives the arc plate and adjusting plate to accurately adjust the dynamic balance of the rotating shaft, effectively improving the stability of the cutter head operation. The cooperation of the spring and damper significantly enhances the device's shock absorption and buffering capabilities, reducing vibration and impact during cutter head operation and extending the service life of each component.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, specifically to a dynamic balance adjustment device for high-efficiency tunnel boring machine cutterheads. Background Technology

[0002] A tunnel boring machine (TBM), also known as a shield tunneling machine, is a large-scale mechanized construction equipment used for underground tunnel engineering. It cuts through geological bodies such as rock strata and soil with a cutterhead, and uses segments to assemble a tunnel structure, achieving efficient and safe excavation of underground space.

[0003] Existing shield tunneling machine cutterhead balancing devices are difficult to adjust accurately according to the real-time operating status of the cutterhead, which can easily lead to eccentricity and swaying of the cutterhead when operating at high speed, affecting tunneling efficiency and tunnel excavation quality. To address these issues, we propose a high-efficiency dynamic balancing device for shield tunneling machine cutterheads. Utility Model Content

[0004] The technical problem solved by this utility model is that the existing shield machine cutterhead balance adjustment device is difficult to adjust accurately according to the real-time operating status of the cutterhead, which makes the cutterhead prone to eccentricity and shaking when running at high speed, affecting tunneling efficiency and tunnel excavation quality. This utility model provides a high-efficiency shield machine cutterhead dynamic balance adjustment device.

[0005] To solve the above-mentioned technical problems, this utility model provides a dynamic balance adjustment device for a high-efficiency shield machine cutter head, including a housing, an installation seat fixedly installed on the inner wall of the housing, a bearing seat fixedly installed on the outer surface of the installation seat, a rotating shaft fixedly connected to the inner ring of the bearing seat, and a dynamic balance mechanism jointly provided on the inner wall of the housing and the outer surface of the rotating shaft.

[0006] Preferably, the dynamic balancing mechanism includes three support seats, the outer surfaces of the three support seats are fixedly connected to the inner wall of the outer shell, a hydraulic cylinder is fixedly installed on the outer surface of each support seat, an arc plate is fixedly connected to the output end of each hydraulic cylinder, three springs are fixedly connected to the inner wall of each arc plate, and an adjustment plate is fixedly connected to one end of each of the three sets of springs.

[0007] Preferably, each of the arc plates has three dampers fixedly connected to its inner wall, and one end of each of the three sets of dampers is fixedly connected to the outer surface of the three adjustment plates.

[0008] Preferably, a balance adjustment sleeve is fixedly installed on the outer surface of the rotating shaft, and the inner walls of the three adjustment plates are in contact with the outer surface of the rotating shaft.

[0009] Preferably, a plurality of sensors are fixedly mounted on the outer surface of the rotating shaft.

[0010] Preferably, each support base has a reinforcing rod fixedly connected to its outer surface, and one end of each of the three reinforcing rods is fixedly connected to the outer surface of the three support bases respectively.

[0011] Compared with related technologies, this utility model has the following beneficial effects:

[0012] This invention employs a dynamic balancing mechanism comprised of three support seats, a hydraulic cylinder, an arc plate, a spring, and an adjusting plate. The hydraulic cylinder's extension and retraction drive the arc plate and adjusting plate, accurately adjusting the dynamic balance of the rotating shaft and effectively improving the stability of the cutterhead operation. The combination of springs and dampers significantly enhances the device's shock absorption and buffering capabilities, reducing vibration and impact during cutterhead operation and extending the service life of each component. The balancing adjustment sleeve further optimizes the balancing effect, ensuring smoother shaft operation. Several sensors monitor the shaft's operating status in real time, providing accurate data support for dynamic balancing, ensuring timely and accurate adjustments. The reinforcing rod strengthens the structural strength of the support seats, improving the overall stability and load-bearing capacity of the device. This allows the device to operate reliably even in the complex and harsh working environment of a tunnel boring machine, improving cutterhead efficiency and operational quality.

[0013] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 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.

[0015] Figure 1 This is a front view structural diagram of the present utility model;

[0016] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a side sectional view of the present invention;

[0018] Figure 4 This is a rear sectional view of the present invention.

[0019] Numbering on the map:

[0020] 1. Housing; 2. Mounting base; 3. Bearing housing; 4. Rotating shaft; 5. Dynamic balancing mechanism; 501. Support base; 502. Hydraulic cylinder; 503. Arc plate; 504. Spring; 505. Adjusting plate; 506. Damper; 507. Balance adjustment sleeve; 6. Sensor; 7. Reinforcing rod. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 A high-efficiency shield tunneling machine cutterhead dynamic balance adjustment device includes a housing 1, an mounting base 2 fixedly installed on the inner wall of the housing 1, a bearing seat 3 fixedly installed on the outer surface of the mounting base 2, a rotating shaft 4 fixedly connected to the inner ring of the bearing seat 3, and a dynamic balance mechanism 5 jointly provided on the inner wall of the housing 1 and the outer surface of the rotating shaft 4. The housing 1 provides installation space and protection for internal components, the mounting base 2 fixes the bearing seat 3, the bearing seat 3 supports the rotating shaft 4 to rotate stably, and the dynamic balance mechanism 5 is used to adjust the balance of the rotating shaft 4 to ensure overall stable operation.

[0023] The dynamic balancing mechanism 5 includes three support seats 501. The outer surfaces of the three support seats 501 are fixedly connected to the inner wall of the outer shell 1. A hydraulic cylinder 502 is fixedly installed on the outer surface of each support seat 501. An arc plate 503 is fixedly connected to the output end of each hydraulic cylinder 502. Three springs 504 are fixedly connected to the inner wall of each arc plate 503. An adjusting plate 505 is fixedly connected to one end of each of the three sets of springs 504. Three dampers 506 are fixedly connected to the inner wall of each arc plate 503. One end of each set of dampers 506 is fixedly connected to the outer surface of the three adjusting plates 505. The three support seats 501 provide stable support for the dynamic balancing mechanism 5. The hydraulic cylinders 502 drive the arc plates 503 to move. The springs 504 and dampers 506 play a buffering and shock absorption role. The adjusting plates 505 directly contact the rotating shaft 4 to achieve balance adjustment, thereby improving the accuracy and safety of the adjustment.

[0024] A balance adjustment sleeve 507 is fixedly installed on the outer surface of the rotating shaft 4. The inner walls of the three adjustment plates 505 are in contact with the outer surface of the rotating shaft 4. Several sensors 6 are fixedly installed on the outer surface of the rotating shaft 4. A reinforcing rod 7 is fixedly connected to the outer surface of each support 501. One end of the three reinforcing rods 7 is fixedly connected to the outer surface of the three support 501 respectively. The balance adjustment sleeve 507 assists the adjustment plate 505 in achieving better balance adjustment. The sensors 6 monitor the status of the rotating shaft 4 in real time and provide a basis for adjustment. The reinforcing rods 7 enhance the stability of the support 501 and ensure the reliability of the device under high-intensity operation.

[0025] The specific implementation process of this utility model is as follows: When the rotating shaft 4 is in use, several sensors 6 on its outer surface monitor the running status of the rotating shaft 4 in real time and feed back data. The dynamic balancing mechanism 5 starts to work. Three support seats 501 are fixed on the inner wall of the outer shell 1 to provide stable support for the hydraulic cylinder 502. The reinforcing rod 7 further strengthens the structural strength of the support seats 501. The hydraulic cylinder 502 performs telescopic movements according to the data fed back by the sensors 6, driving the arc plate 503 to move. The spring 504 and damper 506 on the inner wall of the arc plate 503 play a buffering and shock absorption role between the adjusting plate 505 and the arc plate 503 to avoid violent impact during the adjustment process. Under the drive of the hydraulic cylinder 502, the adjusting plate 505 contacts the balance adjusting sleeve 507 on the outer surface of the rotating shaft 4. By applying appropriate force, the dynamic balance of the rotating shaft 4 is adjusted more accurately, ensuring the stable and efficient operation of the hob.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dynamic balance adjusting device for high performance tunneling machine cutters, comprising a housing (1), characterized in that: The inner wall of the outer shell (1) is fixedly installed with a mounting base (2), and the outer surface of the mounting base (2) is fixedly installed with a bearing seat (3). The inner ring of the bearing seat (3) is fixedly connected with a rotating shaft (4). The inner wall of the outer shell (1) and the outer surface of the rotating shaft (4) are jointly provided with a dynamic balancing mechanism (5).

2. The dynamic balance adjusting device of a high-performance tunneling machine's rolling cutter according to claim 1, characterized in that: The dynamic balancing mechanism (5) includes three support seats (501). The outer surfaces of the three support seats (501) are fixedly connected to the inner wall of the outer shell (1). A hydraulic cylinder (502) is fixedly installed on the outer surface of each support seat (501). An arc plate (503) is fixedly connected to the output end of each hydraulic cylinder (502). Three springs (504) are fixedly connected to the inner wall of each arc plate (503). An adjusting plate (505) is fixedly connected to one end of each of the three sets of springs (504).

3. The dynamic balance adjusting device of a high-performance tunneling machine's rolling cutter according to claim 2, characterized in that: Each of the arc plates (503) has three dampers (506) fixedly connected to its inner wall, and one end of each of the three dampers (506) is fixedly connected to the outer surface of the three adjusting plates (505).

4. The dynamic balance adjustment device for a high-efficiency shield machine cutterhead according to claim 3, characterized in that: A balance adjustment sleeve (507) is fixedly installed on the outer surface of the rotating shaft (4), and the inner walls of the three adjustment plates (505) are in contact with the outer surface of the rotating shaft (4).

5. The dynamic balance adjusting device of a high-performance tunneling machine's rolling cutter according to claim 1, characterized in that: Several sensors (6) are fixedly installed on the outer surface of the rotating shaft (4).

6. The dynamic balance adjusting device of a high-performance tunneling machine's rolling cutter according to claim 1, characterized in that: Each support (501) has a reinforcing rod (7) fixedly connected to its outer surface, and one end of each of the three reinforcing rods (7) is fixedly connected to the outer surface of the three support (501).

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