Shield tail brush of shield tunneling machine
By designing a foldable and rotating front and rear protection plate and reset device in the shield tail brush of the shield machine, the problem of excessive deformation of the shield tail brush when eccentric stress is solved, and the bending adjustment and reset recovery of the shield tail brush during the deflection process is achieved, extending the service life and reducing maintenance costs.
Patent Information
- Application Number
- CN202421559332.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing shield tail brushes are prone to plastic deformation when eccentric stresses, resulting in excessive deformation and inability to meet the usage requirements, affecting the excavation efficiency and increasing construction costs.
A shield tail brush body including an upper cover plate, a lower cover plate and a support plate is designed, and a steel wire group, a front and rear protective plate and a reset device are provided inside. The front and rear protective plates can be folded and rotated, and are equipped with a reset device to drive the protection plate and steel wire group to reset through elastic parts to prevent deformation caused by long-term bending.
This design enables the shield tail brush to bend and adjust during the deflection process of the shield machine, and after the deflection is completed, it can restore the original state through the reset device to avoid irreversible deformation, extend the service life of the shield tail brush, and reduce maintenance costs.
Smart Images
Figure CN222633234U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield machines, in particular to a shield tail brush of a shield machine. Background Art
[0002] Shield machines are widely used in excavating tunnels or various underground pipelines. During the construction of shield machines, due to different strata, sand, gravel, and sand in the tunnel will continue to fall into the shield body. If there is no protection from the shield tail brush, these debris will get stuck in the cutterhead, causing the shield machine to stop working and malfunction. The function of the shield tail brush is to prevent debris from entering the shield body, protect the cutterhead, and ensure the normal operation of the shield machine.
[0003] The material of the shield tail brush is mostly rigid material. When the shield tail brush on the eccentric side of the segment is subjected to too much pressure, it will inevitably cause plastic deformation of the shield tail brush, resulting in excessive deformation of the shield tail brush and failure to meet the use requirements. If this problem is not dealt with, it will lead to a series of problems such as reduced excavation efficiency, increased construction costs, and slowed down construction progress. Therefore, in response to the above problems, a shield tail brush for a shield machine is proposed to solve the above problems. Utility Model Content
[0004] The utility model aims at the deficiencies of the prior art and develops a shield tail brush for a shield machine. The utility model can keep the shield machine in a working state after it is deflected, thereby reducing deformation caused by pressure.
[0005] The technical solution of the utility model to solve the technical problem is: a shield tail brush of a shield machine, including a shield tail brush body, the shield tail brush body including an upper cover plate, a lower cover plate and a support plate, a steel wire group, a front protective plate and a rear protective plate are arranged inside the shield tail brush body, the front protective plate and the rear protective plate can be folded and rotated, the front protective plate and the rear protective plate are both provided with a reset device, and a steel wire group is arranged between the front protective plate and the rear protective plate.
[0006] When the shield machine is deflecting, the front and rear protective plates bend along with the steel wire group. After the deflection of the shield machine is completed, the reset device drives the front and rear protective plates and the steel wire group to reset to prevent the shield machine's tail brush from deformation due to long-term bending.
[0007] Preferably, the front protective plate includes a front fixed plate and a front rotating plate, the front fixed plate is connected to the lower cover plate, the front fixed plate and the front rotating plate are connected by a rotating shaft, the rear protective plate includes a rear fixed plate and a rear rotating plate, the rear fixed plate is connected to the upper cover plate, the rear fixed plate and the rear rotating plate are connected by a rotating shaft, and the rotating shaft is connected to the reset device.
[0008] The front and rear protective plates can be bent and rotated independently, and can be adjusted according to the stress conditions of the tail brush of the shield machine.
[0009] Preferably, the reset device includes a limit rod, a support rod and an elastic member. The limit rod is symmetrically arranged at both ends of the rotating shaft. The limit rod is perpendicular to the rotating shaft. Support rods are arranged on the upper and lower parts of the limit rod. The support rods are respectively located inside and outside the shield tail brush body. The support rods are arranged with an elastic member.
[0010] Preferably, the elastic parts outside the shield tail brush body are respectively connected to the shield tail brush body, the front rotating plate and the rear rotating plate, the elastic parts inside the shield tail brush body close to the front protective plate are respectively connected to the front fixed plate and the front rotating plate, and the elastic parts inside the shield tail brush body close to the rear protective plate are respectively connected to the rear fixed plate and the rear rotating plate.
[0011] The elastic part can be selected from torsion springs, etc. Elastic parts are provided on the inner and outer support rods of the shield tail brush body. A certain force is applied to the front protective plate and the rear protective plate through the elastic parts, so that the front protective plate and the rear protective plate maintain a balanced state during use. When the shield machine deflects, the tail brush of the shield machine bends and the elastic part is stressed. When the deflection of the shield machine ends, the elastic part releases the force to restore the shape of the tail brush of the shield machine, thereby avoiding irreversible deformation due to long-term stress.
[0012] Preferably, the front fixed plate, the front rotating plate, the rear fixed plate and the rear rotating plate are all staggered with multiple connecting rings, the connecting rings of the front fixed plate and the front rotating plate are coaxially arranged and pass through the rotating shaft, and the connecting rings of the rear fixed plate and the rear rotating plate are coaxially arranged and pass through the rotating shaft.
[0013] Preferably, the upper cover plate and the lower cover plate are both provided with a plurality of corresponding mounting holes, and fixing rods are passed through the mounting holes, and the fixing rods pass through the steel wire group, the front protective plate and the rear protective plate.
[0014] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:
[0015] When the shield machine is deflected, the front and rear protective plates bend along with the steel wire group. After the deflection of the shield machine is completed, the elasticity of the reset device will release the force to drive the front and rear protective plates and the steel wire group to reset, preventing the deformation of the tail brush of the shield machine due to long-term bending and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.
[0017] Figure 1 It is a schematic diagram of the structure of the utility model.
[0018] Figure 2 It is a side view of the utility model.
[0019] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at point A in the middle.
[0020] In the figure, 1. shield tail brush body; 2. upper cover plate; 3. lower cover plate; 4. support plate; 5. wire group; 6. front protection plate; 7. rear protection plate; 8. front fixed plate; 9. front rotating plate; 10. rear fixed plate; 11. rear rotating plate; 12. rotating shaft; 13. limit rod; 14. support rod; 15. elastic member; 16. connecting ring; 17. mounting hole; 18. fixing rod. DETAILED DESCRIPTION
[0021] In order to clearly illustrate the technical features of this solution, the utility model is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present utility model, 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 internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0022] like Figures 1 to 3As shown, a shield tail brush of a shield machine comprises a shield tail brush body 1, the shield tail brush body 1 comprises an upper cover plate 2, a lower cover plate 3 and a support plate 4, a steel wire group 5, a front protective plate 6 and a rear protective plate 7 are arranged inside the shield tail brush body 1, the front protective plate 6 and the rear protective plate 7 can be folded and rotated, the front protective plate 6 and the rear protective plate 7 are both provided with a reset device, and the steel wire group 5 is arranged between the front protective plate 6 and the rear protective plate 7. When the shield machine is in the deflection process, the front protective plate 6 and the rear protective plate 7 are bent following the steel wire group 5, and when the shield machine is deflected, the reset device drives the front protective plate 6, the rear protective plate 7 and the steel wire group 5 to reset, so as to prevent the deformation of the shield machine tail brush due to long-term bending.
[0023] The front protective plate 6 includes a front fixed plate 8 and a front rotating plate 9, the front fixed plate 8 is connected to the lower cover plate 3, and the front fixed plate 8 and the front rotating plate 9 are connected through a rotating shaft 12. The rear protective plate 7 includes a rear fixed plate 10 and a rear rotating plate 11, the rear fixed plate 10 is connected to the upper cover plate 2, and the rear fixed plate 10 and the rear rotating plate 11 are connected through a rotating shaft 12, and the rotating shaft 12 is connected to the reset device. The front protective plate 6 and the rear protective plate 7 can be bent and rotated separately, and can be adjusted according to the stress of the tail brush of the shield machine.
[0024] The reset device includes a limit rod 13, a support rod 14 and an elastic member 15. The limit rod 13 is symmetrically arranged at both ends of the rotating shaft 12. The limit rod 13 is perpendicular to the rotating shaft 12. Support rods 14 are arranged on the upper and lower parts of the limit rod 13. The support rods 14 are respectively located inside and outside the shield tail brush body 1, and the support rods 14 are arranged with an elastic member 15.
[0025] The elastic member 15 outside the shield tail brush body 1 is respectively connected to the shield tail brush body 1, the front rotating plate 9 and the rear rotating plate 11, the elastic member 15 inside the shield tail brush body 1 near the front protective plate 6 is respectively connected to the front fixed plate 8 and the front rotating plate 9, and the elastic member 15 inside the shield tail brush body 1 near the rear protective plate 7 is respectively connected to the rear fixed plate 10 and the rear rotating plate 11. The elastic member 15 can be selected from torsion springs, etc. The inner and outer support rods 14 of the shield tail brush body 1 are both provided with elastic members 15, and a certain force is applied to the front protective plate 6 and the rear protective plate 7 through the elastic member 15, so that the front protective plate 6 and the rear protective plate 7 are kept in a balanced state during use. When the shield machine deflects, the shield machine tail brush bends, and the elastic member 15 is stressed. After the shield machine deflects, the elastic member 15 releases the force to restore the shape of the shield machine tail brush to avoid irreversible deformation caused by long-term stress.
[0026] The front fixed plate 8, the front rotating plate 9, the rear fixed plate 10 and the rear rotating plate 11 are all staggered with multiple connecting rings 16. The connecting rings 16 of the front fixed plate 8 and the front rotating plate 9 are coaxially arranged and pass through the rotating shaft 12. The connecting rings 16 of the rear fixed plate 10 and the rear rotating plate 11 are coaxially arranged and pass through the rotating shaft 12.
[0027] The upper cover plate 2 and the lower cover plate 3 are both provided with a plurality of corresponding mounting holes 17 , and the mounting holes 17 are penetrated by fixing rods 18 , which pass through the steel wire group 5 , the front protection plate 6 and the rear protection plate 7 .
[0028] Working principle: When the shield machine is in the process of deflection, the front protective plate 6 and the rear protective plate 7 are bent along with the steel wire group 5, and the elastic part 15 of the reset device is deformed under force. When the shield machine is deflected, the elasticity of the reset device drives the front protective plate 6, the rear protective plate 7 and the steel wire group 5 to reset, preventing the deformation of the tail brush of the shield machine due to long-term bending.
[0029] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.
Claims
1. A shield tail brush for a shield machine, comprising a shield tail brush body (1), characterized in that: The shield tail brush body (1) comprises an upper cover plate (2), a lower cover plate (3) and a support plate (4); a steel wire group (5), a front protective plate (6) and a rear protective plate (7) are arranged inside the shield tail brush body (1); the front protective plate (6) and the rear protective plate (7) are both capable of folding and rotating; the front protective plate (6) and the rear protective plate (7) are both provided with a reset device; and the steel wire group (5) is arranged between the front protective plate (6) and the rear protective plate (7).
2. The shield tail brush of a shield machine according to claim 1 is characterized in that: The front protective plate (6) comprises a front fixed plate (8) and a front rotating plate (9), wherein the front fixed plate (8) is connected to the lower cover plate (3), and the front fixed plate (8) and the front rotating plate (9) are connected via a rotating shaft (12); the rear protective plate (7) comprises a rear fixed plate (10) and a rear rotating plate (11), wherein the rear fixed plate (10) is connected to the upper cover plate (2), and the rear fixed plate (10) and the rear rotating plate (11) are connected via a rotating shaft (12), and the rotating shaft (12) is connected to a reset device.
3. The shield tail brush of a shield machine according to claim 2 is characterized in that: The reset device comprises a limit rod (13), a support rod (14) and an elastic member (15); the limit rod (13) is symmetrically arranged at both ends of the rotating shaft (12); the limit rod (13) is perpendicular to the rotating shaft (12); support rods (14) are arranged at the upper and lower parts of the limit rod (13); the support rods (14) are respectively located inside and outside the shield tail brush body (1); and the support rod (14) is provided with the elastic member (15).
4. The shield tail brush of a shield machine according to claim 3 is characterized in that: The elastic member (15) outside the shield tail brush body (1) is respectively connected to the front rotating plate (9), the rear rotating plate (11) and the shield tail brush body (1); the elastic member (15) inside the shield tail brush body (1) close to the front protective plate (6) is respectively connected to the front fixed plate (8) and the front rotating plate (9); the elastic member (15) inside the shield tail brush body (1) close to the rear protective plate (7) is respectively connected to the rear fixed plate (10) and the rear rotating plate (11).
5. The shield tail brush of a shield machine according to claim 2 is characterized in that: The front fixed plate (8), the front rotating plate (9), the rear fixed plate (10) and the rear rotating plate (11) are all provided with a plurality of connecting rings (16) in an alternating manner; the connecting rings (16) of the front fixed plate (8) and the front rotating plate (9) are coaxially arranged and pass through the rotating shaft (12); and the connecting rings (16) of the rear fixed plate (10) and the rear rotating plate (11) are coaxially arranged and pass through the rotating shaft (12).
6. The shield tail brush of a shield machine according to claim 1 is characterized in that: The upper cover plate (2) and the lower cover plate (3) are both provided with a plurality of corresponding mounting holes (17), the mounting holes (17) are penetrated by fixing rods (18), and the fixing rods (18) pass through the steel wire group (5), the front protection plate (6) and the rear protection plate (7).