A TBM cutterhead fixing device

Abstract

The utility model discloses a kind of TBM cutterhead fixing devices, belong to tunnel construction equipment technical field.The utility model includes pedestal platform, pedestal platform includes T type slide rail, T type slide rail bottom equidistance is provided with locking positioning hole, locking positioning hole cooperation locking bolt;Lateral clamping mechanism includes T type sliding block, T type sliding block is slidably installed in T type slide rail, T type sliding block butt joint arc clamping block, T type sliding block and arc clamping block are provided with height adjusting hole group, height adjusting hole group butt joint height adjusting bolt;Axial support mechanism includes fixed base, inner thread is provided in fixed base, inner thread butt joint stud, the other end of stud is connected adjusting nut, ball head is welded on adjusting nut, ball head butt joint ball hinge support, trapezoidal clamping block is installed on ball hinge support.The utility model cooperates with the synergic cooperation of modular lateral clamping mechanism and multiple degrees of freedom adjustable axial support mechanism, solves the problem that common fixing mode is poor in versatility, fixed point position is not adjustable.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction equipment, specifically a TBM cutterhead fixing device. Background Technology

[0002] In tunnel boring machine (TBM) engineering, when a full-face tunnel boring machine (TBM) completes its excavation task or its cutterhead requires major overhaul and maintenance, its massive cutterhead needs to be disassembled and fixed on the ground to facilitate operations such as cutter head replacement and structural inspection. Currently, the common methods for fixing such large rotating components include using steel wire ropes and ground jacks for tension, using simple support frames for auxiliary support, or welding temporary blocks to the foundation. These methods constitute the main technical status quo for fixing TBM cutterheads.

[0003] However, existing fixing methods still exhibit certain limitations when dealing with TBM cutterheads that are large, heavy, and structurally intricate. For example, the method of using welded temporary stops is difficult to adjust once their positions are determined, lacking versatility. Furthermore, the rigid contact at the fixing points cannot adapt to subtle changes in the cutterhead's circumference, potentially leading to localized stress concentration. Simultaneously, when subjected to possible lateral torsion of the cutterhead, the reliability of this method relies entirely on the weld strength, posing a safety hazard. Therefore, there is an urgent need for a TBM cutterhead fixing device that is highly versatile, has adjustable fixing points, and combines rigid locking with adaptive fit. Utility Model Content

[0004] The purpose of this utility model is to provide a TBM cutter head fixing device, which solves the problems of poor universality, non-adjustable fixing points, and inability to simultaneously achieve rigid locking and adaptive fitting by coordinating a modular lateral clamping mechanism and a multi-degree-of-freedom adjustable axial support mechanism.

[0005] This utility model is achieved through the following technical solution: This utility model is a TBM cutter head fixing device, including a base platform, the base platform including a T-shaped slide rail, and locking positioning holes are equally spaced on the bottom of the T-shaped slide rail, the locking positioning holes cooperating with locking pins; the base platform also includes a lifting hole, which is opened on the base platform near the edge.

[0006] Furthermore, the lateral clamping mechanism includes a T-shaped slider, which is slidably installed inside a T-shaped slide rail. The T-shaped slider has a hollow structure and engages with an arc-shaped clamping block. Both the T-shaped slider and the arc-shaped clamping block have height adjustment holes that engage with height adjustment pins. Two sets of lateral clamping mechanisms are provided, symmetrically distributed on the T-shaped slide rail. The clamping surface of the arc-shaped clamping block is a quarter-cylindrical surface, and its curvature is adapted to the outer circumference of the TBM cutter head being fixed.

[0007] Furthermore, the axial support mechanism includes a fixed base, which is symmetrically welded to both sides of the T-shaped slide rail. The fixed base has an internal thread that engages with a double-ended stud. The other end of the double-ended stud is connected to an adjusting nut. A ball head is welded onto the adjusting nut, and the ball head engages with a ball joint support. A trapezoidal clamping block is installed on the ball joint support. The axial support mechanism is provided in four sets, located on both sides of the T-shaped slide rail. The ball joint support includes a ball socket that mates with the ball head.

[0008] Furthermore, the height adjustment hole group consists of multiple holes arranged at equal intervals along the vertical direction, and the locking positioning hole consists of multiple holes arranged at equal intervals along the length of the T-shaped slide rail.

[0009] Furthermore, anti-slip pads are fixedly installed on the clamping surfaces of both the arc-shaped and trapezoidal clamping blocks.

[0010] This utility model has the following beneficial effects: This invention achieves rapid and precise adaptation to TBM cutterheads of different diameters and models through the cooperation of a lateral clamping mechanism that can move along the slide rail and a multi-level adjustment hole group, which significantly improves the versatility of the device and the scheduling flexibility of on-site operations, and overcomes the drawbacks of the limited applicability of traditional fixing methods.

[0011] This invention utilizes a pin inserted into the locking positioning hole and a lateral clamping mechanism to form a rigid mechanical lock. Combined with multiple axial support points set at the front and rear, it forms a reliable constraint on the lateral and axial movement of the cutter head, effectively avoiding the risk of loosening caused by external force or vibration, and fundamentally enhancing the fixing safety.

[0012] This invention utilizes a universal adjustment structure formed by a ball head and a ball joint support, enabling the trapezoidal clamping block to adaptively conform to the irregular contour of the cutter head end face. This achieves a transformation from rigid fixation to flexible adaptive support, ensuring both the stability of the fixation and avoiding potential damage to the precision surface of the cutter head caused by hard contact.

[0013] 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

[0014] Figure 1 This is a schematic diagram of a TBM cutter head fixing device. Figure 2 This is a schematic diagram of a base platform structure for a TBM cutterhead fixing device; Figure 3 This is a schematic diagram of a lateral clamping mechanism for a TBM cutter head fixing device; Figure 4 This is a schematic diagram of an axial support mechanism for a TBM cutterhead fixing device.

[0015] In the diagram: 1. Base platform; 101. T-shaped slide rail; 102. Locking positioning hole; 103. Locking pin; 104. Lifting hole; 2. Lateral clamping mechanism; 201. T-shaped slider; 202. Arc-shaped clamping block; 203. Height adjustment hole group; 204. Height adjustment pin; 3. Axial support mechanism; 301. Fixed base; 302. Internal thread; 303. Double-ended stud; 304. Adjusting nut; 305. Ball head; 306. Ball joint support; 307. Trapezoidal clamping block. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a TBM cutter head fixing device, including a base platform 1, the base platform 1 including a T-shaped slide rail 101, the T-shaped slide rail 101 serves as the bearing foundation and guide structure of the entire device, and can provide a precise moving track for the upper components. It is preferably made of integral casting or high-strength steel plate welding to ensure its bearing rigidity. The bottom of the T-shaped slide rail 101 is provided with locking positioning holes 102 at equal intervals. The locking positioning holes 102 cooperate with the locking pins 103. In use, when the lateral clamping mechanism 2 moves to the target position, the locking pins 103 are inserted into the corresponding locking positioning holes 102 to achieve rigid locking of the mechanism and effectively prevent it from sliding under force. Preferably, the locking pins 103 are provided with quick-release locking structures, such as cotter pins, at their ends to prevent them from accidentally coming out during vibration. The base platform 1 also includes lifting holes 104, which are opened on the base platform 1 near the edge. The lifting holes 104 can facilitate the connection between the lifting equipment and the base platform 1, thereby realizing the transfer and positioning of the entire device. Preferably, the lifting holes 104 are evenly arranged around the circumference to ensure the balance and stability of the lifting process.

[0018] The lateral clamping mechanism 2 includes a T-shaped slider 201, which is slidably installed in the T-shaped slide rail 101. The T-shaped slider 201 can drive the clamping block to slide freely along the slide rail, thereby quickly adapting to cutter heads of different diameters. Preferably, the mating surfaces of the T-shaped slider 201 and the T-shaped slide rail 101 are precision machined to ensure smooth sliding without significant shaking. The T-shaped slider 201 has a hollow structure and connects to the arc-shaped clamping block 202. Height adjustment holes 203 are provided on both the T-shaped slider 201 and the arc-shaped clamping block 202, and these holes connect to height adjustment pins 204. This structure allows operators to quickly adjust the clamping height of the arc-shaped clamping block 202 by selecting different height adjustment holes 203 and inserting the height adjustment pins 204. Preferably, the height adjustment holes 203 are symmetrically arranged on two opposite side walls of the T-shaped slider 201 so that pins can be inserted simultaneously from both sides, resulting in more balanced force distribution. Two sets of lateral clamping mechanisms 2 are provided, symmetrically distributed on the T-shaped slide rail 101. The clamping surface of the arc-shaped clamping block 202 is a quarter-cylindrical surface, and its curvature matches the outer circumference of the fixed TBM cutter head. This arc design allows the clamping surface to form good contact with the outer circumference of the cutter head, increasing the force-bearing area.

[0019] The axial support mechanism 3 includes a fixed base 301, which is symmetrically welded to both sides of the T-shaped slide rail 101. The fixed base 301 provides a stable mounting foundation for the axial support components. An internal thread 302 is provided inside the fixed base 301, which engages with a double-ended stud 303. By rotating the double-ended stud 303, a preliminary coarse height adjustment can be made. The other end of the double-ended stud 303 is connected to an adjusting nut 304, which can be used for fine height adjustment. Preferably, the adjusting nut 304 has an anti-loosening structure, such as double-nut locking, to maintain the stability of the adjusted position. A ball head 305 is welded onto the adjusting nut 304. The ball head 305 engages with the ball joint support 306. The ball head 305 and the ball socket inside the ball joint support 306 cooperate to form a universal adjustment structure, allowing the trapezoidal clamping block 307 installed on the ball joint support 306 to adaptively conform to the irregular contour of the cutter head end face. Preferably, the ball head 305 and the ball joint support 306 are made of wear-resistant alloy steel to ensure their service life. The trapezoidal clamping block 307 is installed on the ball joint support 306; the axial support mechanism 3 has four sets, located on both sides of the T-shaped slide rail 101; the ball joint support 306 includes a ball socket that mates with the ball head 305.

[0020] The height adjustment hole group 203 consists of multiple holes arranged at equal intervals along the vertical direction. This equal interval arrangement allows for standardized and quantitative adjustment of the clamping height. The locking and positioning hole 102 consists of multiple holes arranged at equal intervals along the length of the T-shaped slide rail 101. This equal interval arrangement facilitates precise positioning and locking of the lateral clamping mechanism 2.

[0021] Anti-slip pads are fixedly installed on the clamping surfaces of the arc-shaped clamping block 202 and the trapezoidal clamping block 307. The anti-slip pads can increase the friction with the contact surface of the cutter head, prevent slippage, and avoid the metal clamping blocks from directly scratching the surface of the cutter head. Preferably, the anti-slip pads are made of wear-resistant and high-friction non-metallic materials and are fixed to the clamping blocks by detachable means such as adhesive or bolts, which is convenient for later replacement.

[0022] 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 TBM cutter head fixing device, characterized in that, include: The base platform (1) includes a T-shaped slide rail (101), and the bottom of the T-shaped slide rail (101) is provided with locking positioning holes (102) at equal intervals, and the locking positioning holes (102) are engaged with locking pins (103). A lateral clamping mechanism (2) includes a T-shaped slider (201), which is slidably installed in a T-shaped slide rail (101). The T-shaped slider (201) has a hollow structure and is connected to an arc-shaped clamping block (202). A height adjustment hole group (203) is provided on the T-shaped slider (201) and the arc-shaped clamping block (202). The height adjustment hole group (203) is connected to a height adjustment pin (204). An axial support mechanism (3) includes a fixed base (301), which is symmetrically welded to both sides of a T-shaped slide rail (101). An internal thread (302) is provided in the fixed base (301), which is connected to a double-ended stud (303). The other end of the double-ended stud (303) is connected to an adjusting nut (304). A ball head (305) is welded on the adjusting nut (304), and the ball head (305) is connected to a ball joint support (306). A trapezoidal clamp (307) is installed on the ball joint support (306).

2. The TBM cutter head fixing device according to claim 1, characterized in that, The base platform (1) also includes a lifting hole (104) which is located on the base platform (1) near the edge.

3. The TBM cutter head fixing device according to claim 1, characterized in that, The lateral clamping mechanism (2) is provided in two sets, symmetrically distributed on the T-shaped slide rail (101); the clamping surface of the arc-shaped clamping block (202) is a quarter-cylindrical surface, and its curvature is adapted to the outer circumferential surface of the TBM cutter head that is fixed.

4. The TBM cutter head fixing device according to claim 1, characterized in that, The axial support mechanism (3) is provided in four sets, which are located on both sides of the T-shaped slide rail (101); the ball joint support (306) includes a ball socket that cooperates with the ball head (305).

5. A TBM cutter head fixing device according to claim 1, characterized in that, The height adjustment hole group (203) is composed of a plurality of holes arranged at equal intervals along the vertical direction, and the locking positioning hole (102) is composed of a plurality of holes arranged at equal intervals along the length of the T-shaped slide rail (101).

6. The TBM cutter head fixing device according to claim 1, characterized in that, Anti-slip pads are fixedly installed on the clamping surfaces of the arc-shaped clamping block (202) and the trapezoidal clamping block (307).

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