Multi-stage hydraulic synchronous propulsion and self-adaptive adjusting device for TBM

Abstract

The utility model discloses a multistage hydraulic synchronous propulsion and self -adaptation adjusting device for TBM belongs to tunneling machine technical field. The utility model discloses a hydraulic propulsion assembly and adjusting assembly. The hydraulic propulsion assembly is installed on the shield tail casing of shield machine through the fixed seat, and the hydraulic push rod is through the connecting hole and the connecting rod sliding fit of adjusting assembly, the adjusting assembly is formed through the hinging of ball head and ball head base and is connected with external support structure through the fixed plate of end. Multiple hydraulic propulsion assembly and adjusting assembly equiangular angle circle distribution, and the oil circuit of hydraulic push rod is in parallel to realize synchronous propulsion. The utility model provides accurate orientation through sliding fit, and through the ball hinge structure self -adaptation adjustment thrust direction, has effectively improved the tunneling efficiency and construction safety.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, specifically a multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM. Background Technology

[0002] A full-face tunnel boring machine (TBM) is a large-scale tunnel construction machine that integrates mechanical, electrical, hydraulic, and control technologies. It is widely used in tunnel projects for subways, railways, highways, and water conservancy projects. The propulsion system, as the core functional component of the TBM, directly affects tunneling efficiency, construction quality, and equipment safety.

[0003] Currently, traditional TBM propulsion systems mostly adopt a structure in which hydraulic cylinders directly push the segments or support shoes, which has the following technical problems:

[0004] 1. Poor synchronization: Due to factors such as load differences, hydraulic oil leakage, and manufacturing errors, multiple hydraulic cylinders are difficult to achieve strict synchronization during the propulsion process, resulting in uneven distribution of propulsion force, causing TBM attitude deviation, uneven stress on tunnel segments, or even damage, affecting the accuracy of tunnel axis and the quality of tunnel formation.

[0005] 2. Lack of adaptive adjustment capability: Under complex geological conditions, the attitude of the tunnel wall or segments may change locally. The rigid connection structure of the traditional propulsion system is difficult to adaptively adjust the thrust direction, which can easily lead to uneven loading, jamming or local stress concentration, aggravating equipment wear and even causing safety accidents. Utility Model Content

[0006] The purpose of this invention is to provide a multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBMs. By providing synchronous thrust through a hydraulic propulsion assembly and adaptively transmitting and adjusting the thrust direction through an adjustment assembly with a ball joint structure, the invention solves the problems of propulsion misalignment, segment damage, and accelerated equipment wear caused by poor synchronization and lack of adaptive adjustment capability in traditional propulsion systems.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model is a multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM, including a hydraulic propulsion component and an adjustment component.

[0009] The hydraulic propulsion assembly includes a fixed base, a mounting plate, bolts, a hydraulic push rod, and connecting holes. The fixed base is threadedly connected to the mounting plate by bolts. The hydraulic push rod is fixedly connected to the outer surface of the mounting plate, and the housing of the hydraulic push rod has connecting holes.

[0010] The adjustment assembly includes a connecting rod, a connecting plate, a fixed shaft, a ball head, a ball head seat, a slot, and a fixed plate. One end of the connecting rod is fixedly connected to the connecting plate. A fixed shaft is fixed on the outer surface of the connecting plate. A ball head is fixed at the end of the fixed shaft. A slot is provided on the ball head seat. The ball head is hinged to the ball head seat through the slot. A fixed plate is fixedly connected to one end face of the ball head seat.

[0011] The outer surface of the fixed base is fixedly connected to the shield tail shell of the tunnel boring machine, and the connecting rod is movably fitted into the connecting hole.

[0012] Furthermore, there are multiple hydraulic propulsion components and adjustment components, which are distributed circumferentially at equal angles on the tail shell of the tunnel boring machine.

[0013] Furthermore, a through groove is provided on the fixing plate.

[0014] Furthermore, the fixing base and the mounting plate are both provided with threaded holes, which are threaded to fit the bolt. The threaded end of the bolt passes through the threaded hole, and the nut end of the bolt overlaps the outer surface of the mounting plate.

[0015] Furthermore, the hydraulic circuits of multiple hydraulic push rods are connected in parallel to achieve multi-stage hydraulic synchronous propulsion.

[0016] Furthermore, the hinged contact surfaces of the ball head and the ball head seat are inlaid with self-lubricating bushings.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model achieves multi-stage hydraulic synchronous propulsion by connecting the hydraulic circuits of multiple hydraulic push rods in parallel and supplying oil from the same hydraulic pump station. This ensures consistent output and synchronous action at each propulsion point, effectively avoiding uneven distribution of propulsion force caused by load differences, hydraulic leakage, and other factors. This prevents TBM attitude deviation, uneven stress on segments, or damage, and improves tunnel axis accuracy and forming quality.

[0019] 2. This invention utilizes a ball joint connection in the adjustment component, allowing the thrust direction to automatically adjust with changes in the tunnel wall or segment posture, thus exhibiting excellent self-adaptive capabilities. This reduces eccentric loading, jamming, or localized stress concentration, lowers equipment wear, and improves construction safety and reliability.

[0020] 3. This utility model provides precise sliding guidance and positioning for the extension and retraction process of the hydraulic push rod by slidingly engaging the connecting rod with the connecting hole on the hydraulic push rod, suppressing radial sway or deflection, and ensuring motion stability and straightness during the pushing and retraction process.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] Figure 1 A schematic diagram of a multi-stage hydraulic synchronous propulsion and adaptive adjustment device;

[0023] Figure 2 A schematic diagram of the back structure of the multi-stage hydraulic synchronous propulsion and adaptive adjustment device;

[0024] Figure 3 This is a schematic diagram of the hydraulic propulsion assembly.

[0025] Figure 4 A schematic diagram showing the connection between the hydraulic propulsion assembly and the adjustment assembly;

[0026] Figure 5 A schematic diagram of the exploded structure of the adjustment component.

[0027] In the diagram: 1. Hydraulic propulsion assembly; 101. Fixed base; 102. Mounting plate; 103. Bolt; 104. Hydraulic push rod; 105. Connecting hole; 2. Adjustment assembly; 201. Connecting rod; 202. Connecting plate; 203. Fixed shaft; 204. Ball head; 205. Ball head seat; 206. Slot; 207. Fixed plate; 208. Through slot; 3. Shield tail shell of tunnel boring machine. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5 This utility model provides a technical solution: a multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM, including a hydraulic propulsion component 1 and an adjustment component 2.

[0030] The hydraulic propulsion assembly 1 includes a fixed base 101, a mounting plate 102, bolts 103, a hydraulic push rod 104, and a connecting hole 105. The fixed base 101 is threadedly connected to the mounting plate 102 by bolts 103. Specifically, the fixed base 101 and the mounting plate 102 share a threaded hole, the threaded end of the bolt 103 passes through the threaded hole, and the nut end of the bolt 103 overlaps the outer surface of the mounting plate 102, thereby reliably fixing the mounting plate 102 to the fixed base 101. The hydraulic push rod 104 is fixedly connected to the outer surface of the mounting plate 102, and the housing of the hydraulic push rod 104 has a connecting hole 105 for movably connecting with the adjustment assembly 2. The outer surface of the fixed base 101 is fixedly connected to the shield tail housing 3 of the tunnel boring machine, so that the hydraulic propulsion assembly 1 is installed as a whole on the tunnel boring machine.

[0031] The adjustment assembly 2 includes a connecting rod 201, a connecting plate 202, a fixed shaft 203, a ball head 204, a ball head seat 205, a slot 206, and a fixed plate 207. One end of the connecting rod 201 is fixedly connected to the connecting plate 202. A fixed shaft 203 is fixed on the outer surface of the connecting plate 202. A ball head 204 is fixed at the end of the fixed shaft 203. A self-lubricating bushing is embedded in the hinge contact surface between the ball head 204 and the ball head seat 205 to reduce friction and extend service life. A slot 206 is provided on the ball head seat 205. The ball head 204 is hinged to the ball head seat 205 through the slot 206 to form a ball hinge connection, so that the ball head 204 can rotate at multiple angles in the ball head seat 205, thereby realizing adaptive adjustment. A fixed plate 207 is fixedly connected to one end face of the ball head seat 205. A through groove 208 is provided on the fixed plate 207 for fixing the adjustment component 2 to the external support structure such as the tunnel wall or pipe segment through bolts or pins.

[0032] The other end of the connecting rod 201 is slidably fitted into the connecting hole 105 on the hydraulic push rod 104. The core function of the connecting rod 201 is not to transmit the main propulsive force, but to provide precise sliding guidance and positioning for the hydraulic push rod 104 during its extension and retraction, and to suppress any radial swaying or deflection that may occur in the hydraulic push rod 104 through its own rigidity, thereby greatly ensuring the motion stability and straightness of the hydraulic push rod 104 during its extension and retraction.

[0033] The outer surface of the fixed base 101 is fixedly connected to the shield tail shell 3 of the tunnel boring machine, and the connecting rod 201 is movably fitted into the connecting hole 105.

[0034] There are multiple hydraulic propulsion components 1 and adjustment components 2, which are evenly distributed on the shield tail shell 3 of the tunnel boring machine at equal angles. The hydraulic oil circuits of multiple hydraulic push rods 104 are connected in parallel and supplied by the same hydraulic pump station, thereby realizing multi-stage hydraulic synchronous propulsion, ensuring that the output of each propulsion point is consistent and the action is synchronized, and avoiding propulsion eccentricity.

[0035] In operation, the hydraulic system drives each hydraulic push rod 104 to extend synchronously. The cylinder of the hydraulic push rod 104 acts as the active force-applying component, and the thrust it generates directly acts on the connecting rod 201 with which it slides. This thrust is then transmitted to the external support structure through the adjustment component 2, ultimately propelling the tunnel boring machine forward. During this process, the sliding fit of the connecting rod 201 within the connecting hole 105 ensures the accuracy and stability of the thrust direction. At the same time, due to the ball joint connection between the ball head 204 and the ball head seat 205, the adjustment component 2 can adapt to changes in the tunnel wall or segment posture, automatically adjusting the thrust direction to ensure that the propulsion system is always in the optimal stress state, effectively improving propulsion efficiency, construction safety, and extending equipment life.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBMs, characterized in that, include: A hydraulic propulsion assembly (1) includes a fixed base (101), a mounting plate (102), bolts (103), a hydraulic push rod (104), and a connecting hole (105). The fixed base (101) is threadedly connected to the mounting plate (102) by bolts (103). The hydraulic push rod (104) is fixedly connected to the outer surface of the mounting plate (102). The housing of the hydraulic push rod (104) is provided with a connecting hole (105). Adjustment assembly (2), the adjustment assembly (2) includes a connecting rod (201), a connecting plate (202), a fixed shaft (203), a ball head (204), a ball head seat (205), a slot (206) and a fixed plate (207). One end of the connecting rod (201) is fixedly connected to the connecting plate (202). The fixed shaft (203) is fixed on the outer surface of the connecting plate (202). The ball head (204) is fixed at the end of the fixed shaft (203). The ball head seat (205) has a slot (206). The ball head (204) is hinged to the ball head seat (205) through the slot (206). The fixed plate (207) is fixedly connected to one end face of the ball head seat (205). The outer surface of the fixed base (101) is fixedly connected to the shield tail shell (3) of the tunnel boring machine, and the connecting rod (201) is movably fitted into the connecting hole (105).

2. The multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM according to claim 1, characterized in that, The hydraulic propulsion assembly (1) and the adjustment assembly (2) are multiple and are distributed circumferentially at equal angles on the shield tail shell (3) of the tunnel boring machine.

3. The multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM according to claim 1, characterized in that, A through groove (208) is provided on the fixing plate (207).

4. The multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM according to claim 1, characterized in that, The fixing seat (101) and the mounting plate (102) are both provided with threaded holes and are threadedly engaged with bolts (103). The threaded end of the bolt (103) passes through the threaded hole, and the nut end of the bolt (103) overlaps the outer surface of the mounting plate (102).

5. A multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM according to claim 2, characterized in that, The hydraulic circuits of multiple hydraulic push rods (104) are connected in parallel to achieve multi-stage hydraulic synchronous propulsion.

6. The multi-stage hydraulic synchronous propulsion and adaptive adjustment device for TBM according to claim 1, characterized in that, The hinge contact surface between the ball head (204) and the ball head seat (205) is inlaid with a self-lubricating bushing.

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