Omnidirectional damping device of shield tunneling machine
By designing a full-direction shock absorbing device of the shield machine including a cylindrical shell, a hydraulic cylinder, a shock absorbing connection block and six sets of shock absorbing components, the damage to equipment and personnel by vibration during the operation of the shield machine is solved, effective vibration damping effect is achieved, and equipment reliability and personnel safety are improved.
Patent Information
- Application Number
- CN202421303842.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The vibrations generated by the shield machine during operation cause damage to the equipment itself and the staff, resulting in reduced equipment reliability, shortened service life, and may cause occupational diseases.
A shield machine omnidirectional shock absorbing device is designed, including a cylindrical shell, a hydraulic cylinder, a shock absorbing connection block and six sets of shock absorbing components. The shock absorbing assembly consists of an outer spherical joint, a protective shell, a sliding rod, an inner spherical joint and a shock absorbing spring. Through the rotational cooperation of these components and the absorption effect of the spring, it automatically adapts to vibrations in all directions.
Effectively reduce the vibration amplitude and frequency of the shield machine, improve the reliability and service life of the equipment, reduce the risk of occupational diseases caused by vibration, and protect the safety of staff.
Smart Images
Figure CN222863988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an omnidirectional shock absorbing device for a shield machine, belonging to the technical field of shock absorbing for shield machines. Background Art
[0002] The shield machine is a large-scale mechanical equipment used for tunnel construction. It consists of a main structure, cutterhead, support system, power supply system, hydraulic system, control system and other parts. Shield machines are usually used to dig long-distance tunnels underground and can adapt to various geological environments, including soft soil, mudstone, gravel, hard rock, etc. During the operation of the shield machine, the cutterhead will continue to advance, and a series of operations such as excavation, cleaning, support, and advancement will be carried out to finally complete the excavation and construction of the tunnel. Shield machines are widely used in urban underground transportation, water conservancy projects, subway construction, etc. Its high efficiency and safety have become an indispensable and important tool for modern tunnel construction.
[0003] However, during the operation of the shield machine, a large amount of vibration will be generated, causing serious damage and impact to the equipment itself. First, the vibration of the shield machine itself may cause damage to the mechanical equipment. Long-term high-intensity vibration may cause the loosening, fatigue or breakage of equipment parts, reduce the reliability and service life of the equipment, and increase the cost of equipment maintenance and repair; secondly, the vibration will be transmitted to the staff, and long-term exposure to high-intensity vibration may have a negative impact on the health of the staff. Some studies have shown that long-term exposure to high-intensity vibration environments may cause occupational diseases such as tremor syndrome and cervical spondylosis. Therefore, the design and implementation of shield machine vibration reduction can effectively reduce the generation of vibration, protect the safety of equipment and related personnel, and improve the construction quality and work efficiency of the shield. Summary of the invention
[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an omnidirectional shock absorbing device for a shield machine, which has a good shock absorbing effect on the shield machine, improves the reliability and service life of the equipment, and protects the safety of related workers.
[0005] The utility model discloses a technical scheme of an omnidirectional shock absorbing device for a shield machine, comprising a cutter disc, one side of the cutter disc is connected to a force transmission rod, the other end of the force transmission rod is connected to the shield machine, a shock absorbing device is arranged on the outer wall of the force transmission rod between the cutter disc and the shield machine, the shock absorbing device comprises a cylindrical shell, one side of the cylindrical shell is connected to the shield machine via a hydraulic cylinder, an annular groove is formed on the outer wall of the force transmission rod, a shock absorbing connecting block is arranged in the annular groove, the inner wall of the shock absorbing connecting block is rotatably matched with the annular groove of the force transmission rod, and a shock absorbing assembly is arranged between the shock absorbing connecting block and the cylindrical shell.
[0006] Furthermore, the shock absorbing components are in six groups.
[0007] Furthermore, the shock absorbing assembly includes a protective shell and a sliding rod, one end of the protective shell is provided with an outer spherical joint, the inner wall of the cylindrical outer shell is formed with an outer spherical groove, the outer spherical joint is inserted into the outer spherical groove, the outer spherical joint and the outer spherical groove are rotatably matched, the other end of the protective shell is connected to the sliding rod, one end of the sliding rod is formed with a baffle, the sliding rod is located at one end of the baffle and is inserted into the protective shell, a first shock absorbing spring is provided between the upper end of the baffle and the upper inner wall of the protective shell, a second shock absorbing spring is provided between the lower end of the baffle and the lower inner wall of the protective shell, the other end of the sliding rod is provided with an inner spherical joint, the outer wall of the shock absorbing connecting block is formed with an inner spherical groove, the inner spherical joint is inserted into the inner spherical groove, and the inner spherical joint and the inner spherical groove are rotatably matched.
[0008] Furthermore, outer walls of the outer spherical joint and the inner spherical joint are respectively provided with rubber sleeves.
[0009] Furthermore, six hydraulic cylinders are connected between the cylindrical shell and the shield machine.
[0010] Furthermore, a rubber pad is arranged between the annular groove on the outer wall of the force transmission rod and the shock-absorbing connecting block.
[0011] The utility model provides an omnidirectional shock absorbing device for a shield machine with the beneficial effects that the device automatically adapts to reduce vibrations in all directions through an outer spherical joint and an inner spherical joint, thereby reducing the vibration amplitude and frequency of the shield machine, achieving the purpose of vibration reduction, and having a good shock absorbing effect, thereby improving the reliability and service life of the equipment, reducing occupational diseases caused by vibration to relevant staff, and protecting the safety of relevant staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional schematic diagram of an omnidirectional shock absorbing device for a shield machine of the utility model;
[0013] Figure 2 It is a structural schematic diagram of an omnidirectional shock absorbing device for a shield machine according to the utility model;
[0014] Figure 3 It is a structural diagram of the shock absorbing component. DETAILED DESCRIPTION
[0015] The technical solution of the utility model patent will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] In the description of the utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model patent, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] The utility model relates to an omnidirectional shock absorbing device for a shield machine, such as Figure 1 — Figure 3 As shown, it includes a cutter disc 1, one side of the cutter disc 1 is connected to a force transmission rod 2, the other end of the force transmission rod 2 is connected to a shield machine 11, a shock absorbing device is arranged on the outer wall of the force transmission rod 2 between the cutter disc 1 and the shield machine 11, and the shock absorbing device includes a cylindrical shell 3, one side of the cylindrical shell 3 is connected to the shield machine 11 via a hydraulic cylinder 10, an annular groove is formed on the outer wall of the force transmission rod 2, a shock absorbing connecting block 9 is arranged in the annular groove, the inner wall of the shock absorbing connecting block 9 is rotatably matched with the annular groove of the force transmission rod 2, and a shock absorbing assembly is arranged between the shock absorbing connecting block 9 and the cylindrical shell 3.
[0019] Furthermore, there are six groups of shock absorbing components, each of which is evenly distributed, and the angle between adjacent shock absorbing components is 60°.
[0020] Furthermore, the shock absorbing assembly includes a protective shell 7 and a sliding rod 6, an outer spherical joint 4 is provided at one end of the protective shell 7, an outer spherical groove is formed on the inner wall of the cylindrical outer shell 3, the outer spherical joint 4 is inserted into the outer spherical groove, and the outer spherical joint 4 is rotatably matched with the outer spherical groove, and the other end of the protective shell 7 is connected to the sliding rod 6, and a baffle 12 is formed on one end of the sliding rod 6, and the sliding rod 6 is located at one end of the baffle 12 and inserted into the protective shell 7, a first shock absorbing spring 5 is provided between the upper end of the baffle 12 and the upper inner wall of the protective shell 7, and a second shock absorbing spring 13 is provided between the lower end of the baffle 12 and the lower inner wall of the protective shell 7, and an inner spherical joint 8 is provided at the other end of the sliding rod 6, an inner spherical groove is formed on the outer wall of the shock absorbing connecting block 9, the inner spherical joint 8 is inserted into the inner spherical groove, and the inner spherical joint 8 is rotatably matched with the inner spherical groove.
[0021] Furthermore, the outer walls of the outer spherical joint 4 and the inner spherical joint 8 are respectively provided with rubber sleeves 14. The rubber sleeves 14 can reduce the wear of the outer spherical joint 4 and the inner spherical joint 8 during rotation, and sufficient lubricating oil can be applied to the inner and outer walls of the rubber sleeves to provide good lubrication.
[0022] Furthermore, six hydraulic cylinders 10 are connected between the cylindrical housing 3 and the shield machine 11. The hydraulic cylinders 10 are evenly distributed, and the angle between adjacent hydraulic cylinders 10 is 60°.
[0023] Furthermore, a rubber pad 15 is provided between the annular groove on the outer wall of the force transmission rod 2 and the shock absorbing connecting block 9. The rubber pad 15 can reduce the wear of the force transmission rod 2 and the shock absorbing connecting block 9 during relative rotation, and sufficient lubricating oil can be applied to the inner and outer walls of the rubber pad 15 respectively to provide good lubrication.
[0024] The beneficial effects of the utility model of an omnidirectional shock absorbing device for a shield machine are as follows: it is mainly composed of five parts, which are respectively a cutter head 1, a force transmission rod 2, a shock absorbing device, a hydraulic cylinder 10 and a shield machine 11 from left to right. The cutter head 1, the force transmission rod 2, the shock absorbing device, the hydraulic cylinder 10 and the shield machine 11 are coaxially arranged in sequence. The shock absorbing device comprises a cylindrical outer shell 3, a shock absorbing component, and a shock absorbing connecting block 9. The shock absorbing connecting block 9 is evenly distributed with six shock absorbing components around it. The six shock absorbing components need to be kept in the same vertical plane. The shock absorbing component comprises an outer spherical joint 4, a protective shell 7, a sliding rod 6, and an inner spherical joint 8. The center points of the three need to be in a straight line. The outer spherical joint 4 and the inner spherical joint 8 are both hollow spheres. The materials of the outer spherical joint 4 and the inner spherical joint 8 are selected from high-strength stainless steel. The outer spherical joint 4 is inserted into the outer spherical groove of the cylindrical outer shell 3, and the two are separated by a rubber sleeve 14 and are coated with sufficient lubricating oil. The inner spherical joint 8 is inserted into the inner of the shock absorbing connecting block 9. The spherical groove is also separated by a rubber sleeve 14 and coated with sufficient lubricating oil. The outer spherical joint 4 and the inner spherical joint 8 can rotate in all directions within a certain range, and the notch of the outer spherical groove must be smaller than the outer diameter of the outer spherical joint 4, and the notch of the inner spherical groove must be smaller than the outer diameter of the inner spherical joint 8, so that it will not fall out when rotating. One side of the outer spherical joint 4 is integrally connected with the protective shell 7, and the inner spherical joint 8 is integrally connected with the sliding rod 6. The other end of the sliding rod 6 is inserted into the protective shell 7. A baffle 12 is formed at one end of the sliding rod 6 located at the protective shell 7. A first shock-absorbing spring 5 is arranged between the upper part of the baffle 12 and the upper inner wall of the protective shell 7, and a second shock-absorbing spring 13 is arranged between the lower part of the baffle 12 and the lower inner wall of the protective shell 7. An annular groove is formed on the force transmission rod 2, and the shock-absorbing connecting block 9 is arranged in the annular groove. The force transmission rod 2 and the shock-absorbing connecting block 9 are separated by a rubber pad and coated with sufficient lubricating oil, and the shock-absorbing connecting block 9 can rotate around the annular groove. The present scheme provides an omnidirectional shock absorbing device for a shield machine. When the cutter head 1 of the shield machine 11 generates vibration during the excavation process, the vibration will propagate along the force transmission rod 2. First, the rubber pad 15 at the force transmission rod 2 and the shock absorbing connecting block 9 will provide the first buffering and vibration reduction, and then the vibration will be transmitted to the shock absorbing connecting block 9. At this time, the vibration reduction components distributed in a ring around the shock absorbing connecting block 9 will play a role. Due to the existence of the outer spherical joint 4 and the inner spherical joint 8, each shock absorbing component can be driven to rotate freely in all directions and automatically adapt to the angle and direction most suitable for vibration reduction. Then, most of the vibration energy is absorbed by the first and second shock absorbing springs 5 and 12 in the shock absorbing component, thereby further reducing the influence of the vibration of the cutter head 1 on the shield machine 11. At the same time, the rubber sleeve 14 at the embedded part of the outer spherical joint 4 and the inner spherical joint 8 will also provide a certain degree of vibration reduction, thereby further reducing the overall vibration of the shield machine 1.The device automatically adapts to reduce vibrations in all directions through the outer spherical joint 4 and the inner spherical joint 8, thereby reducing the vibration amplitude and frequency of the shield machine 1, thereby achieving the purpose of vibration reduction. The device has a good shock-absorbing effect, thereby improving the reliability and service life of the equipment, reducing occupational diseases caused by vibration to related workers, and protecting the safety of related workers.
Claims
1. An omnidirectional shock absorbing device for a shield machine, comprising a cutter disc (1), one side of the cutter disc (1) being connected to a force transmission rod (2), the other end of the force transmission rod (2) being connected to a shield machine (11), a shock absorbing device being arranged on an outer wall of the force transmission rod (2) between the cutter disc (1) and the shield machine (11), characterized in that: The shock absorbing device comprises a cylindrical outer shell (3), one side of the cylindrical outer shell (3) is connected to a shield machine (11) via a hydraulic cylinder (10), an annular groove is formed on the outer wall of the force transmission rod (2), a shock absorbing connecting block (9) is arranged in the annular groove, the inner wall of the shock absorbing connecting block (9) is rotatably matched with the annular groove of the force transmission rod (2), and a shock absorbing assembly is arranged between the shock absorbing connecting block (9) and the cylindrical outer shell (3).
2. The shield machine omnidirectional shock absorbing device according to claim 1, characterized in that: The shock absorbing components are in six groups.
3. The shield machine omnidirectional shock absorbing device according to claim 2, characterized in that: The shock absorbing assembly comprises a protective shell (7) and a sliding rod (6), one end of the protective shell (7) is provided with an outer spherical joint (4), the inner wall of the cylindrical outer shell (3) is provided with an outer spherical groove, the outer spherical joint (4) is inserted into the outer spherical groove, the outer spherical joint (4) and the outer spherical groove are rotatably matched, the other end of the protective shell (7) is connected to the sliding rod (6), one end of the sliding rod (6) is provided with a baffle (12), and the sliding rod (6) is inserted into the baffle (12) at one end. The first damping spring (5) is arranged between the upper end of the baffle (12) and the upper inner wall of the protective shell (7), and the second damping spring (13) is arranged between the lower end of the baffle (12) and the lower inner wall of the protective shell (7). The other end of the sliding rod (6) is provided with an inner spherical joint (8). The outer wall of the damping connecting block (9) is provided with an inner spherical groove. The inner spherical joint (8) is inserted into the inner spherical groove. The inner spherical joint (8) and the inner spherical groove are rotatably matched.
4. The shield machine omnidirectional shock absorbing device according to claim 3, characterized in that: The outer walls of the outer spherical joint (4) and the inner spherical joint (8) are respectively provided with rubber sleeves (14).
5. The shield machine omnidirectional shock absorbing device according to claim 1, characterized in that: Six hydraulic cylinders (10) are connected between the cylindrical shell (3) and the shield machine (11).
6. The shield machine omnidirectional shock absorbing device according to claim 1, characterized in that: A rubber pad (15) is provided between the annular groove on the outer wall of the force transmission rod (2) and the shock-absorbing connecting block (9).