Multi-line fixture

Abstract

The utility model relates to grouting technical field provides a kind of multi-pipeline fixing device, the device includes central pole body, guiding mechanism and fixed assembly;Guiding mechanism includes outer constraint cover and multiple connecting pieces, outer constraint cover is sleeved in central pole body outside to form accommodating cavity;Multiple connecting pieces are arranged in accommodating cavity along the circumference of central pole body interval, and the both ends of connecting piece are connected to outer constraint cover and central pole body respectively, to separate accommodating cavity into multiple first pipeline passage;Fixed assembly includes fastener detachably connected to the bottom end of central pole body, by multiple grouting pipes respectively into multiple first pipeline passage, realize guiding and physical isolation in the process of lowering, effectively prevent mutual extrusion, distortion, entangle or jam;When each grouting pipe is lowered to preset distance, multiple grouting pipes are bunched and fixed by fastener, form multiple stable fixing points distributed along the length direction of pipeline interval, improve the safety of grouting pipe lowering process.

Description

Technical Field

[0001] This utility model relates to the field of grouting technology, and in particular to a multi-pipe fixing device. Background Technology

[0002] With the widespread application of grouting technology in underground engineering, its processes have become increasingly diversified. Among these, surface grouting, which delivers grout to the well via grouting pipelines, has become a crucial component of the grouting system. To improve grout delivery efficiency and accuracy, multi-pipeline grouting technology is widely adopted. This technology, by deploying multiple independent grouting pipes within the same borehole, enables layered and sequential grouting at different depths or sections. This significantly improves grout delivery efficiency and grouting accuracy, while also enhancing the operational reliability and fault tolerance of the pipeline system. In multi-pipeline grouting processes, the pipeline lowering stage after borehole formation is particularly critical. Because multiple grouting pipelines must be lowered simultaneously, and it must be ensured that they do not become entangled or knotted during drilling, high demands are placed on the lowering technology and equipment.

[0003] Existing conventional drilling equipment is mostly designed for single-pipe lowering, lacking spatial guidance, orderly arrangement and synchronous constraint functions for multiple grouting pipes. As a result, when lowering multiple pipes, the pipes are prone to entanglement, knotting or local jamming due to uneven stress and positional deviation, which restricts the safety and reliability of grouting operations. Utility Model Content

[0004] This utility model provides a multi-pipe fixing device to solve the problem that the grouting pipes are prone to entanglement, knotting and jamming during the lowering process due to the lack of a guiding and constraining structure for multiple grouting pipes in the prior art.

[0005] This utility model provides a multi-pipe fixing device, including: A central rod, the top of which is provided with a connecting part; A guiding mechanism, sleeved in the middle of the central rod, includes: An outer constraint sleeve is fitted onto the central rod body at intervals, and a receiving cavity is formed between the outer constraint sleeve and the central rod body; The first connecting component includes a plurality of connectors, which are arranged circumferentially within the accommodating cavity along the central rod. Each connector is connected at both ends to the outer constraint sleeve and the central rod, respectively, to divide the accommodating cavity into a plurality of independent first pipeline channels. The fixing component includes a fastener detachably connected to the bottom end of the central rod. The fastener is used to bundle and fix multiple grouting pipes after they have been lowered a preset distance through multiple first pipeline channels, and moves synchronously with the multiple grouting pipes after they have been bundled and fixed.

[0006] According to the multi-pipe fixing device provided by this utility model, the outer constraint sleeve is a flexible outer constraint sleeve, and the multiple connecting members include: At least one fixed connector, the two ends of which are fixedly connected to the central rod and the outer constraint sleeve, respectively; At least one adjustable connector, one end of which is fixedly connected to the central rod, and the other end of which passes through the outer constraint sleeve and is connected to a locking member. The cross-sectional area of ​​the first pipeline channel can be changed by adjusting the relative position of the locking member and the adjustable connector.

[0007] According to the present invention, a multi-pipe fixing device is provided in which the adjustable connector and the locking member are connected by a threaded engagement.

[0008] According to the present invention, a multi-pipe fixing device is provided in which the fixed connector and the adjustable connector are arranged alternately at intervals along the circumference of the central rod.

[0009] According to the present invention, a multi-pipe fixing device is provided, wherein the fixing connector and the adjustable connector are multiple components evenly distributed along the circumference.

[0010] According to the present invention, a multi-pipe fixing device is provided, wherein there are multiple first connecting components, and the multiple first connecting components are arranged at intervals along the length direction of the central rod.

[0011] According to the present invention, a multi-pipe fixing device is provided, wherein there are multiple guiding mechanisms, and the multiple guiding mechanisms are arranged at intervals along the length direction of the central rod.

[0012] According to the multi-pipe fixing device provided by this utility model, the fixing component further includes: A flexible constraint sleeve, the top end of which is fitted onto the bottom end of the central rod in a spaced manner; The fastener is detachably mounted at the bottom end of the flexible constraint sleeve.

[0013] According to the multi-pipe fixing device provided by this utility model, the fixing component further includes: The second connecting component is connected between the flexible constraint sleeve and the central rod. The second connecting component forms a plurality of second pipe channels, and the plurality of second pipe channels correspond one-to-one with the plurality of first pipe channels.

[0014] According to the present invention, a multi-pipe fixing device is provided, wherein the fastener includes two semi-annular clamp pieces, and the two clamp pieces are connected by bolts.

[0015] The multi-pipe fixing device provided by this utility model divides the accommodating cavity between the outer constraint sleeve and the central rod into several independent first pipe channels through multiple connectors in the guiding mechanism. This allows multiple grouting pipes to be inserted into each first pipe channel, achieving precise guidance and physical isolation during the lowering process, effectively preventing mutual squeezing, twisting, entanglement, or jamming. At the same time, when multiple grouting pipes are lowered to a preset distance, the fixing component uses fasteners to bundle and fix the multiple grouting pipes. After the fasteners are locked, they move down synchronously with the grouting pipes, forming multiple stable fixing points distributed at intervals along the length of the pipes. This effectively suppresses bending, shaking, and deviation, significantly improving the safety, smoothness, and construction efficiency of the grouting pipe lowering process, thereby ensuring the reliability of the overall grouting operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a multi-pipe fixing device provided by this utility model.

[0018] Figure 2 This is a structural schematic diagram of another multi-pipe fixing device provided by this utility model.

[0019] Figure 3 This is a structural schematic diagram of the guide mechanism provided by this utility model.

[0020] Figure 4 This is a structural schematic diagram of the fixing component provided by this utility model.

[0021] Figure label: 100. Central rod; 110. Connecting part; 120. Joint; 200. Guiding mechanism; 210. Outer constraint sleeve; 220. Connector; 221. Fixed connector; 222. Adjustable connector; 223. Locking element; 230. First pipeline channel; 300. Fixing component; 310. Flexible restraint sleeve; 320. Fastener; 321. Clamp plate; 322. Bolt; 323. Lock nut; 330. Second connecting component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0025] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0027] The following is combined with Figures 1-4 This utility model describes a multi-pipe fixing device.

[0028] An embodiment of the first aspect of this utility model provides a multi-pipe fixing device, such as... Figures 1 to 4 As shown, the fixing device includes a central rod 100, a guide mechanism 200 sleeved in the middle of the central rod 100, and a fixing component 300 connected to the bottom end of the central rod 100.

[0029] The central rod 100 has a connecting part 110 at its top end; the guiding mechanism 200 includes an outer constraint sleeve 210 and a first connecting component. The outer constraint sleeve 210 is fitted onto the central rod 100 at intervals, forming a receiving cavity between the outer constraint sleeve 210 and the central rod 100; the first connecting component includes multiple connectors 220, which are arranged at intervals along the circumference of the central rod 100 within the receiving cavity. The two ends of each connector 220 are connected to the outer constraint sleeve 210 and the central rod 100, respectively, to divide the receiving cavity into multiple independent first pipeline channels 230; the fixing assembly 300 includes a fastener 320 detachably connected to the bottom end of the central rod 100. The fastener 320 is used to bundle and fix multiple grouting pipes after they have been lowered a preset distance through the multiple first pipeline channels 230, and moves synchronously with the multiple grouting pipes after being bundled and fixed.

[0030] Understandably, the top of the central rod 100 is provided with a connecting part 110 for connecting other external auxiliary equipment such as drilling rigs or cranes, so that the entire device can be stably connected to the external auxiliary equipment and transmit power during construction; a guide mechanism 200 is sleeved in the middle of the central rod 100, the guide mechanism 200 includes an outer constraint sleeve 210 and multiple connecting parts 220 distributed circumferentially along the central rod 100, the outer constraint sleeve 210 is sleeved on the outside of the central rod 100, and the two form an annular accommodating cavity; the multiple connecting parts 220 divide the accommodating cavity into multiple independent first pipeline channels 230; a fixing component 300 is connected to the bottom of the central rod 100, the fixing component 300 is used to bundle and position the multiple grouting pipes passing through each first pipeline channel 230, to ensure that the grouting pipes maintain a stable and orderly arrangement during installation and prevent displacement or entanglement.

[0031] During construction, the connecting part 110 at the top of the central rod 100 is first connected to the drilling rig. Then, multiple grouting pipes are inserted into the independent first pipeline channels 230 in the guide mechanism 200 to achieve precise guidance and interval positioning of the grouting pipes, effectively preventing them from being squeezed, twisted, or deviated during the lowering process, thus completing the initial constraint and protection of the grouting pipes. After the grouting pipes pass out from below the guide mechanism 200, they enter the fixing component 300 located at the bottom of the central rod 100. After the multiple grouting pipes are lowered a preset distance, the fixing component 300 bundles and fixes the multiple grouting pipes together. The multiple grouting pipes are firmly clamped by fasteners 320 (such as clamps or grips) to ensure the stability of the overall structure. After the fasteners 320 are locked, they move downwards together with the multiple grouting pipes. Every time the pipes are lowered to a preset interval, the bundling and tightening operation is repeated, that is, a new fastener 320 is set again to fix the multiple grouting pipes. In this way, multiple grouting pipes are guided and constrained by the guide mechanism 200, and through the operation method of lowering and fixing them segment by segment, multiple fasteners 320 are distributed at intervals along the length of the grouting pipe. Each fastener 320 moves synchronously with the grouting pipe after being fixed, thereby forming multiple stable bundle fixing points in the entire grouting pipeline. This not only effectively controls the deformation and displacement of the grouting pipe in the free section, avoiding problems such as knotting, scattering or local bending, but also significantly improves the safety and construction quality of the synchronous lowering of multiple pipes, ensuring the stable operation of the grouting process under complex working conditions.

[0032] The multi-pipe fixing device provided in this embodiment of the utility model divides the accommodating cavity between the outer constraint sleeve 210 and the central rod 100 into several independent first pipeline channels 230 through multiple connectors 220 in the guide mechanism 200. This allows multiple grouting pipes to be inserted into each of the first pipeline channels 230, achieving precise guidance and physical isolation during the lowering process, effectively preventing mutual squeezing, twisting, entanglement, or jamming. At the same time, when the multiple grouting pipes are lowered to a preset distance, the fixing component 300 uses fasteners 320 to bundle and fix the multiple grouting pipes. After the fasteners 320 are locked, they move down synchronously with the grouting pipes, forming multiple stable fixing points distributed at intervals along the length of the pipeline. This effectively suppresses bending, shaking, and deviation, significantly improving the safety, smoothness, and construction efficiency of the grouting pipe lowering process, thereby ensuring the reliability of the overall grouting operation.

[0033] According to embodiments of the present invention, such as Figure 1 As shown, the connecting part 110 can be a lifting ring. Specifically, the top end of the central rod 100 is connected to a lifting ring via a connector 120; wherein, the lifting ring material includes, but is not limited to, metal.

[0034] In this embodiment, the upper end of the connector 120 is connected to the lifting ring by wire or connecting chain, and the lower end of the connector 120 is connected to the central rod 100 by thread.

[0035] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the outer constraint sleeve 210 is a flexible outer constraint sleeve, and the multiple connectors 220 include at least one fixed connector 221 and at least one adjustable connector 222; the two ends of the fixed connector 221 are fixedly connected to the central rod 100 and the outer constraint sleeve 210, respectively; one end of the adjustable connector 222 is fixedly connected to the central rod 100, and the other end of the adjustable connector 222 passes through the outer constraint sleeve 210 and is connected to a locking member 223. By adjusting the relative position of the locking member 223 and the adjustable connector 222, the cross-sectional area of ​​the first pipeline channel 230 can be changed.

[0036] It is understood that the outer constraint sleeve 210 is made of flexible material and has a certain elastic deformation capability to adapt to grouting pipes with different outer diameters; the multiple connectors 220 include at least one fixed connector 221 and at least one adjustable connector 222, wherein the two ends of the fixed connector 221 are fixed to the central rod 100 and the outer constraint sleeve 210 by welding, riveting or bonding, etc., to maintain the basic stability of the overall structure; one end of the adjustable connector 222 is fixedly connected to the central rod 100, and the other end passes through the outer constraint sleeve 210 and is connected to a locking member 223. The locking member 223 can be a snap ring or a clamping member, etc. By adjusting the position of the locking member 223 on the adjustable connector 222, the radial position of the outer constraint sleeve 210 relative to the central rod 100 can be changed, thereby causing the flexible outer constraint sleeve to undergo elastic deformation, and thus dynamically adjusting the cross-sectional area of ​​each first pipeline channel 230 formed by the connectors 220. This design allows the device to be adapted to various specifications of grouting pipes, improving its versatility. During installation, fine-tuning ensures the positioning accuracy and proper tightness of the grouting pipes in each channel, enhancing guiding stability and construction adaptability.

[0037] For example, the outer constraint sleeve 210 may adopt a track structure, which consists of multiple articulated or continuous flexible segments arranged around the central rod 100, maintaining the integrity of the structure while allowing moderate deformation in the circumferential and radial directions.

[0038] Optionally, the adjustable connector 222 and the locking member 223 are connected by a threaded engagement.

[0039] Specifically, one end of the adjustable connector 222 is fixed to the central rod 100, and the other end has an external thread section that passes through the mounting hole on the outer constraint sleeve 210. The locking member 223 is a nut structure with internal threads, which engages with the external thread section of the adjustable connector 222. By rotating the locking member 223, its axial position on the adjustable connector 222 can be adjusted, thereby changing the radial constraint degree of the outer constraint sleeve 210. Since the outer constraint sleeve 210 is a flexible structure, when the locking member 223 is tightened, the adjustable connector 222 is pulled to cause the outer constraint sleeve 210 to contract towards the central rod 100, reducing the cross-sectional area of ​​the first pipeline channel 230; conversely, loosening the locking member 223 releases the constraint, allowing the outer constraint sleeve 210 to expand elastically, increasing the space of the first pipeline channel 230. This threaded adjustment method features a simple structure, high adjustment accuracy, and reliable locking, facilitating quick adaptation and tightening on-site according to the actual outer diameter of the grouting pipe, thus enhancing the versatility and ease of installation of the device.

[0040] Optionally, the fixed connector 221 and the adjustable connector 222 are arranged alternately along the circumference of the central rod 100.

[0041] It is understandable that the fixed connector 221 and the adjustable connector 222 are arranged alternately along the circumference of the central rod 100. That is, in the circumferential direction, one fixed connector 221 and one adjustable connector 222 are arranged alternately to form a balanced connection structure. This makes the outer constraint sleeve 210 more uniformly stressed in the radial direction. The fixed connector 221 provides stable rigid support to ensure the overall structural rigidity of the guide mechanism 200. The spaced adjustable connectors 222 realize local radial adjustment function, which makes it easy for the flexible outer constraint sleeve to produce uniform elastic deformation when adjusting the locking member 223. This coordinates the synchronous change of the cross-sectional area of ​​multiple first pipeline channels 230, avoids eccentricity or local stress concentration caused by uneven adjustment, and enhances the adaptability to grouting pipes of different specifications and the convenience of adjustment during installation.

[0042] Optionally, the fixed connector 221 and the adjustable connector 222 are multiple components evenly distributed along the circumference.

[0043] It is understandable that both the fixed connector 221 and the adjustable connector 222 are multiple ones that are evenly distributed around the circumference of the central rod 100. That is, the two are symmetrically arranged with equal spacing in the circumferential direction, forming a regular distribution pattern. This makes the connecting force on the outer constraint sleeve 210 evenly distributed in the radial direction, effectively ensuring the structural stability between the outer constraint sleeve 210 and the central rod 100, and avoiding uneven loading or deformation caused by uneven force.

[0044] In one embodiment of this utility model, such as Figure 1 As shown, there are multiple first connecting components, which are arranged at intervals along the length of the central rod 100.

[0045] Understandably, multiple sets of first connecting components, each composed of connectors 220, are distributed longitudinally along the central region of the central rod 100. These multiple first connecting components, spaced apart along the length of the central rod 100, provide multi-segment support and connection for the relatively long outer constraint sleeve 210, significantly enhancing the overall structural rigidity and bending resistance of the guide mechanism 200, and preventing the outer constraint sleeve 210 from sagging or deforming due to its own weight or external forces. Simultaneously, the multi-point axially distributed first connecting components provide continuous and stable guiding support for the grouting pipe passing through it, effectively improving the straightness and positioning accuracy of the grouting pipe during lowering, avoiding local offset or jamming, and further ensuring the smoothness and reliability of multi-pipe synchronous operations.

[0046] It should be noted that in other embodiments, such as Figure 2As shown, there can also be multiple guide mechanisms 200. Multiple guide mechanisms 200 are arranged at intervals along the length of the central rod 100, which can form multiple independent guide support areas in the vertical direction, significantly improving the continuous guiding capability and structural stability of the grouting pipe that is lowered over a long distance.

[0047] In another embodiment of this utility model, such as Figure 1 and Figure 4 As shown, the fixing component 300 also includes a flexible constraint sleeve 310, the top end of which is fitted onto the bottom end of the central rod 100 at intervals; the fastener 320 is detachably disposed at the bottom end of the flexible constraint sleeve 310.

[0048] Understandably, the top of the flexible constraint sleeve 310 is coaxially and spaced out over the bottom of the central rod 100, forming an annular space between it and the outer wall of the central rod 100 to accommodate multiple grouting pipes. The flexible constraint sleeve 310 is made of a flexible material with elasticity and a certain strength, capable of adapting to the arrangement shape of the grouting pipes and providing appropriate wrapping constraint force. Fasteners 320 are detachably installed at the bottom of the flexible constraint sleeve 310, for example, using clamps, grips, or threaded clamping structures. By tightening, the lower end of the flexible constraint sleeve 310 is radially contracted, thereby bundling and fixing the multiple grouting pipes passing through. When the grouting pipes are lowered to a preset distance, the fasteners 320 are used to achieve stable clamping of the grouting pipe bundle.

[0049] For example, the flexible restraint sleeve 310 has an overall cylindrical structure with the same opening diameter at both ends, facilitating the insertion and arrangement of grouting pipes. Its lower opening is radially tightened by fasteners 320, thereby achieving bundled fixation of multiple grouting pipes. When the fasteners 320 are tightened, the lower end of the flexible restraint sleeve 310 retracts, tightly fitting the outer surface of the grouting pipe bundle, providing clamping and preventing loosening. The flexible restraint sleeve 310 can be made of elastic and flexible materials, including but not limited to rubber, plastic, or other high-molecular-weight elastic materials. These materials possess good resilience, wear resistance, and anti-aging properties, adapting to grouting pipes of different outer diameters and maintaining structural integrity during repeated clamping and releasing operations, ensuring reliable fixation and convenient operation.

[0050] Optionally, the fixing component 300 further includes a second connecting component 330, which is connected between the flexible constraint sleeve 310 and the central rod 100. The second connecting component 330 forms a plurality of second pipe channels, which correspond one-to-one with a plurality of first pipe channels 230.

[0051] Understandably, the second connecting component 330 is positioned between the flexible constraint sleeve 310 and the central rod 100, forming multiple independent second pipeline channels between them. These multiple second pipeline channels correspond one-to-one with and are continuously connected to the multiple first pipeline channels 230 in the upper guiding mechanism 200 in terms of axial position and spatial layout. This ensures that each grouting pipe, after entering through the first pipeline channel 230, can smoothly pass through the corresponding second pipeline channel along the same path, achieving precise and continuous guidance of the grouting pipe within the area of ​​the fixing component 300. This not only enhances the connection rigidity and coaxiality of the flexible constraint sleeve 310, preventing it from shifting or twisting during clamping, but also further strengthens the constraint on the arrangement of multiple grouting pipes, preventing misalignment, crossing, or jamming in the cluster fixing area. This improves the guiding continuity, structural stability, and construction reliability of the entire fixing device during the lowering and fixing of the grouting pipes.

[0052] In this embodiment, the second connecting component 330 can adopt the same structural form as the first connecting component, which facilitates standardized design and mass production of parts and reduces manufacturing costs. It should be noted that in other embodiments, all connectors 220 of the second connecting component 330 can be fixed connectors 221, meaning that both ends of each connector 220 are rigidly connected to the central rod 100 and the flexible constraint sleeve 310 by welding, riveting, or threading, respectively, without the need for adjustment. Since the second connecting component 330 is located in the area of ​​the fixed assembly 300, it mainly undertakes the guiding and structural support functions of the grouting pipe end, and does not involve dynamic adjustment of the channel size. Therefore, using all fixed connectors 221 can meet the structural strength and positioning requirements, while simplifying the overall structure, improving connection reliability, and enhancing the stable support capability of the flexible constraint sleeve 310.

[0053] Optional, such as Figure 4 As shown, the fastener 320 includes two semi-annular clamping plates 321, which are connected by bolts 322.

[0054] Understandably, the two clamping plates 321, when spliced ​​together, form a complete annular clamping structure, the inner diameter of which matches the outer contour of the multiple grouting pipe bundles. Each clamping plate 321 has connecting lugs at both ends; when paired, bolts 322 pass through the through holes in the lugs and are locked in place with locking nuts 323. By tightening the bolts 322, the two clamping plates 321 move closer together, causing the entire annular structure to contract, thereby applying a uniform radial clamping force to the bottom end of the flexible constraint sleeve 310 and the multiple grouting pipes passing through it, achieving reliable bundle fixing.

[0055] It should be noted that after the fastener 320 has completed the bundled fixation of the bottom end of the flexible constraint sleeve 310 and the multiple grouting pipes inserted therein, the flexible constraint sleeve 310 is separated from the fastener 320. The fastener 320 remains clamped and is lowered synchronously downwards along with the multiple grouting pipes, while the flexible constraint sleeve 310 remains stationary. When it is lowered to the next preset distance, a new fastener 320 is placed at the bottom end of the flexible constraint sleeve 310, and the grouting pipe at that position is clamped and fixed again, thus forming the next fixed node. By repeating this cycle of "fixing-separation-lowering-refixing", multiple fasteners 320 are set segment by segment along the length of the grouting pipe, realizing the segmented continuous fixation of multiple grouting pipes.

[0056] It should be noted that, since the flexible constraint sleeve 310 is made of a flexible material with a certain degree of elasticity and toughness, after the fastener 320 has clamped the grouting pipe bundle, the flexible constraint sleeve 310 can be pulled out directly from the inner diameter of the fastener 320 by applying axial tensile force. At this time, the fastener 320 maintains its clamping state on the grouting pipe bundle, while the flexible constraint sleeve 310, due to its flexibility and elastic deformation capability, can undergo slight radial deformation in a partially released state, thereby slipping and separating from the fastener 320 ring. Of course, the separation of the flexible constraint sleeve 310 from the fastener 320 can also be achieved by first slightly loosening the fastener 320 (releasing only part of the clamping force, not enough to loosen the grouting pipe), so that the flexible constraint sleeve 310 has sufficient clearance for extraction; after the flexible constraint sleeve 310 is released, the fastener 320 is then re-locked to ensure that it continues to firmly clamp the grouting pipe bundle and is lowered accordingly.

[0057] A second aspect of this utility model provides a grouting operation device, which includes a drilling rig and a multi-pipeline fixing device provided in any of the above embodiments.

[0058] Understandably, the multi-pipe fixing device is detachably or fixedly connected to the drilling rig's spindle or suspension system via its top connector. During construction, multiple grouting pipes sequentially pass through multiple first and second pipe channels within the fixing device, achieving precise guidance, segmented clustering, and stable fixation through the coordinated action of the guiding mechanism and fixing components. The drilling rig not only provides drilling power for the device but also bears the suspension weight of the entire fixing device and part of the grouting pipes, ensuring the smooth and orderly lowering of the grouting pipes during deep-hole operations. This grouting equipment integrates efficient multi-pipe synchronous fixing and conveying functions, effectively avoiding problems such as grouting pipe entanglement, offset, or jamming, significantly improving the safety, operational efficiency, and project quality of grouting construction. It is suitable for various complex working conditions requiring multi-channel synchronous grouting, such as soil and rock reinforcement, foundation pit support, and tunnel engineering.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-pipe fixing device, characterized in that, include: A central rod, the top of which is provided with a connecting part; A guiding mechanism, sleeved in the middle of the central rod, includes: An outer constraint sleeve is fitted onto the central rod body at intervals, and a receiving cavity is formed between the outer constraint sleeve and the central rod body; The first connecting component includes a plurality of connectors, which are arranged circumferentially within the accommodating cavity along the central rod. Each connector is connected at both ends to the outer constraint sleeve and the central rod, respectively, to divide the accommodating cavity into a plurality of independent first pipeline channels. The fixing component includes a fastener detachably connected to the bottom end of the central rod. The fastener is used to bundle and fix multiple grouting pipes after they have been lowered a preset distance through multiple first pipeline channels, and moves synchronously with the multiple grouting pipes after they have been bundled and fixed.

2. The multi-pipe fixing device according to claim 1, characterized in that, The outer constraint sleeve is a flexible outer constraint sleeve, and the multiple connecting components include: At least one fixed connector, the two ends of which are fixedly connected to the central rod and the outer constraint sleeve, respectively; At least one adjustable connector, one end of which is fixedly connected to the central rod, and the other end of which passes through the outer constraint sleeve and is connected to a locking member. The cross-sectional area of ​​the first pipeline channel can be changed by adjusting the relative position of the locking member and the adjustable connector.

3. The multi-pipe fixing device according to claim 2, characterized in that, The adjustable connector and the locking component are connected by a threaded engagement.

4. The multi-pipe fixing device according to claim 2, characterized in that, The fixed connector and the adjustable connector are arranged alternately at intervals along the circumference of the central rod.

5. The multi-pipe fixing device according to claim 4, characterized in that, The fixed connector and the adjustable connector are multiple components evenly distributed along the circumference.

6. The multi-pipe fixing device according to claim 1, characterized in that, There are multiple first connecting components, which are arranged at intervals along the length of the central rod.

7. The multi-pipe fixing device according to claim 1, characterized in that, There are multiple guiding mechanisms, which are arranged at intervals along the length of the central rod.

8. The multi-pipe fixing device according to any one of claims 1 to 7, characterized in that, The fixing component also includes: A flexible constraint sleeve, the top end of which is fitted onto the bottom end of the central rod in a spaced manner; The fastener is detachably mounted at the bottom end of the flexible constraint sleeve.

9. The multi-pipe fixing device according to claim 8, characterized in that, The fixing component also includes: The second connecting component is connected between the flexible constraint sleeve and the central rod. The second connecting component forms a plurality of second pipe channels, and the plurality of second pipe channels correspond one-to-one with the plurality of first pipe channels.

10. The multi-pipe fixing device according to claim 8, characterized in that, The fastener includes two semi-circular clamping plates, which are connected by bolts.

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