Hydraulic support device for post-support processing suspension top

Abstract

The utility model relates to the technical field of mining operation, in particular to a hydraulic support device of a post-support processing suspended roof, which comprises a hydraulic support body and a water cutting mechanism. The hydraulic support body is provided with a top beam used for supporting a top plate and a shield beam arranged at the rear end of the top beam. The water cutting mechanism is arranged on the side, away from the top plate, of the top beam and comprises a driving unit and a water jet cutting head arranged at the movable end of the driving unit, and the water jet cutting head has a first state located on the inner side of the top beam and a second state extending out of the end, close to the shield beam, of the top beam; and when the water jet cutting head is in the second state, the supporting unit on the top plate can be broken and / or hydraulic fracture forming is carried out on the goaf of the top plate by jetting high-speed fluid, and the hydraulic support device can realize back anchoring of the support, so that the formed suspended roof is intervened, the operation cost is reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of mining operation technology, and in particular to a hydraulic support device for post-scaffolding processing of suspended roofs. Background Technology

[0002] With the widespread application of fully mechanized coal mining technology in underground coal mining, to avoid the serious consequences of large-scale goaf collapses on the longwall face (such as the formation of air leakage components, increasing the risk of spontaneous combustion of coal left in the goaf; large-area collapses may generate shock waves, impacting the mining area or releasing large amounts of toxic and harmful gases, threatening the lives of workers; and affecting the stability of the surrounding rock in adjacent roadways, inducing roof and floor accidents), a management strategy of "mining and then lowering" is usually adopted to control the area of ​​the suspended roof in the goaf and prevent large-scale roof collapses. Among these factors, the self-stability of the roof strata is the key factor determining whether the suspended roof area exceeds the safety threshold; while during the mining preparation stage, the regular installation of anchor bolts, anchor cables, and other support facilities on the top of the roadways at both ends to ensure safety is a secondary factor in whether the suspended roof area exceeds the safety threshold.

[0003] To reduce the self-stability of the strata above the mining layer, hydraulic fracturing technology is typically used in the initial stage of fully mechanized mining. This involves creating fractures in the strata above the mining layer by injecting water through boreholes. This method is highly effective, but as a large-scale, forward-looking measure, it cannot address the problem of roof overhang during mining.

[0004] To reduce the impact of the end-support facilities on the roof, pre-anchoring is currently the main measure adopted during the mining phase. However, like hydraulic fracturing, this method cannot intervene in the already formed overhang, and it is costly, complex, and highly dangerous. Utility Model Content

[0005] This utility model provides a hydraulic support device for post-construction treatment of suspended roofs. This hydraulic support device can realize the retraction of anchors after the construction of the frame, thereby enabling intervention on the already formed suspended roof, reducing operating costs and improving safety.

[0006] In a first aspect, this utility model provides a hydraulic support device for post-construction processing of suspended roofs, comprising: a hydraulic support body disposed between a top plate and a bottom plate, the hydraulic support body having a top beam for supporting the top plate and a shield beam disposed at the rear end of the top beam; a water jet cutting mechanism disposed on the side of the top beam away from the top plate, the water jet cutting mechanism including a drive unit and a water jet cutting head disposed at the movable end of the drive unit, the water jet cutting head having a first state located inside the top beam and a second state extending from one end of the top beam adjacent to the shield beam; wherein, when the water jet cutting head is in the second state, it can break the support unit on the top plate and / or hydraulically create cracks in the goaf of the top plate by spraying high-speed fluid.

[0007] In one possible implementation, the drive unit includes a telescopic component for switching the waterjet cutting head between a first state and a second state.

[0008] In one possible implementation, the drive unit further includes a robotic arm disposed at the movable end of the telescopic component, the movable end of the robotic arm being connected to the water jet cutting head for adjusting the position and angle of the water jet cutting head.

[0009] In one possible implementation, the waterjet cutting mechanism further includes a water supply component and a feed component. The two ends of the water supply component are used to connect the waterjet cutting head and a high-pressure water source, respectively, and the feed component is used to deliver external abrasive particles to the waterjet cutting head.

[0010] In one possible implementation, the water supply assembly and the feed assembly are located inside the robotic arm.

[0011] In one possible implementation, the feeding assembly employs a flexible worm gear feeding mechanism.

[0012] In one possible implementation, a flexible reinforcing layer is wound around the outer peripheral surface of the water supply component.

[0013] In one possible implementation, the robotic arm is a three-stage stroke robotic arm.

[0014] In one possible implementation, a vision component is also included, located at the bottom of the top beam, with its vision acquisition port facing the goaf.

[0015] Secondly, this utility model embodiment provides a post-scaffolding process for a suspended roof based on the above-mentioned hydraulic support device for post-scaffolding treatment, including the following steps: after the hydraulic support body is moved, the support unit on the roof is broken by the water jet cutting head of the water cutting mechanism; if the suspended roof cannot collapse on its own, hydraulic cracking is performed on the suspended roof of the goaf by the water jet cutting head.

[0016] The hydraulic support device for post-construction treatment of suspended roofs provided by this utility model, after the hydraulic support body is moved, drives the water jet cutting head to move to the second state through the drive unit, so that the water jet cutting head can break the support unit on the roof plate. This can realize the post-construction anchoring, and can also hydraulically create cracks in the suspended roof through the water jet cutting head, thereby realizing intervention on the already formed suspended roof, reducing operating costs and improving safety. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of a hydraulic support device for post-construction suspension provided by this utility model between the top plate and the bottom plate.

[0019] Figure 2 This is a schematic diagram of the planar structure of a hydraulic support body and a drive unit provided by this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of a hydraulic support body and a drive unit provided by this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of a hydraulic support body, drive unit, and vision component provided by this utility model.

[0022] Figure 5 This is a schematic diagram showing the connection between a water supply component, a material supply component, and a water jet cutting head provided by this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of a feeding assembly provided by this utility model.

[0024] Figure 7 This is a flowchart of a post-construction suspension process for a frame provided by this utility model.

[0025] Figure label:

[0026] 1. Hydraulic support body; 11. Top beam; 12. Protective beam;

[0027] 2. Top slab; 3. Bottom slab;

[0028] 4. Waterjet cutting mechanism; 41. Drive unit; 411. Telescopic assembly; 412. Robotic arm; 42. Waterjet cutting head; 43. Water supply assembly; 431. High-pressure water supply pipe; 432. Overpressure protection valve; 433. Pressure gauge; Pressure compensator; 434. 435. Check valve; 44. Feeding assembly;

[0029] 5. Visual components; 6. Support units; 7. Gaps. Detailed Implementation

[0030] 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.

[0031] The following is combined Figure 1-6 This utility model describes a hydraulic support device for post-scaffolding processing of suspended ceilings, comprising: a hydraulic support body 1 and a water jet cutting mechanism 4, wherein:

[0032] The hydraulic support body 1 is disposed between the top plate 2 and the bottom plate 3. The hydraulic support body 1 has a top beam 11 for supporting the top plate 2 and a protective beam 12 disposed at the rear end of the top beam 11.

[0033] The water jet cutting mechanism 4 is located on the side of the top beam 11 away from the top plate 2. The water jet cutting mechanism 4 includes a drive unit 41 and a water jet cutting head 42 located at the movable end of the drive unit 41. The water jet cutting head 42 includes a first state located inside the top beam 11 and a second state extending from one end of the top beam 11 adjacent to the shield beam 12.

[0034] When the water jet cutting head 42 is in the second state, it can break down the support units on the roof 2 and / or create hydraulic cracks in the goaf of the roof 2 by spraying high-speed fluid. Specifically, the hydraulic cracking creates cracks 7 on the roof 2 to intervene in the already formed overhang.

[0035] In this utility model, after the hydraulic support body is moved, the water jet cutting head 42 is driven by the drive unit 41 to move to the second state, so that the water jet cutting head 42 can break the support unit on the top plate 2. This can realize the back anchoring of the support, and can also create hydraulic cracks in the suspended roof through the water jet cutting head 42, thereby intervening in the already formed suspended roof, reducing operating costs and improving safety.

[0036] In related technologies, hydraulic pre-fracturing technology is used in the initial stage of fully mechanized mining, which involves creating fractures in the upper strata of the mining layer by injecting water through boreholes. This method is highly effective, but as a large-scale and forward-looking measure, it cannot address the problem of roof collapse during mining. Pre-anchoring removal is currently the main measure adopted in the mining stage. Traditional anchor removal operations require at least four people to complete the work, from escalating the ladder, observing the terrain, operating the anchor removal pump, to lifting the anchor removal jack. This not only increases labor costs but also involves the risk of falls and mechanical injuries due to working at height. While using explosives to blast at the edge of the goaf can effectively solve the roof collapse problem, it carries high risks and can easily trigger serious derivative disasters.

[0037] In this embodiment of the invention, water jet cutting technology is deeply integrated with hydraulic supports, innovatively solving the core problem of handling overhead roof issues after support installation in mining processes. This device achieves a technological leap from traditional front-mounted anchor removal to rear-mounted anchor removal by integrating a water jet cutting mechanism 4 into the hydraulic support top beam 11. In practical applications, this innovation completely changes the traditional operating mode. Previously, front-mounted anchor removal required workers to enter unsupported areas at great risk, which was not only highly dangerous but also significantly slowed down the working face's progress. This device, however, uses water jet cutting technology to allow the entire anchor removal process to be completed within a safe, supported space, fundamentally eliminating safety hazards. The dual-state design (concealed and extended states) of the water jet cutting head 42 embodies a perfect unity of intelligence and safety, ensuring that the normal function of the support is not affected while allowing for rapid deployment when needed. More importantly, this device achieves the dual functions of support unit breaking and hydraulic crack creation in the roof 2. By adjusting the water jet parameters, different operating modes can be flexibly switched. This innovative "one machine, two uses" design greatly improves equipment utilization and economic efficiency. Compared to traditional blasting operations, waterjet cutting technology also demonstrates significant environmental and safety advantages. It does not generate dangerous shock waves and does not pose a risk of gas explosion, making it a technological innovation that truly aligns with the concept of green mining.

[0038] Specifically, the support units are the support facilities (such as anchor bolts) regularly installed on the top of the two roadways during the construction phase. There are no anchor bolts in other areas. The support facilities on the two roadways are the main reason why the triangular overhang area of ​​the goaf exceeds that of other areas. The water jet cutting head 42 removes the locking parts (nuts) of the support units by spraying high-speed fluid. The support units themselves are not reusable. Currently, the method of removing anchors before the frame requires workers to climb to heights to remove the locking parts of the support units, posing certain safety hazards. This application, however, uses the method of removing anchors after the frame and utilizes the water jet cutting head 42 to remove the locking parts of the support units, greatly improving safety.

[0039] In some embodiments, the drive unit 41 includes a telescopic component 411, which is used to drive the waterjet cutting head 42 to switch between a first state and a second state.

[0040] In this embodiment of the invention, the telescopic component 411 adopts a multi-stage telescopic structure, which enables precise positioning control of the waterjet cutting head 42, solving the technical problem that traditional fixed cutting devices are difficult to adapt to complex working environments. In practical applications, support units at different locations are often distributed at different heights and depths, which requires the cutting device to have extremely strong positional adaptability. The innovative design of the multi-stage telescopic structure precisely meets this need, allowing for flexible adjustment of the extension length according to actual conditions, ensuring the accuracy of the cutting operation.

[0041] Meanwhile, the design of the telescopic component 411 also fully considers the special characteristics of the mining environment and adopts comprehensive protective measures. For example, a sealed dustproof structure effectively prevents coal dust intrusion, corrosion-resistant materials are used to cope with the humid environment, and mechanical limit devices are set to prevent excessive extension and retraction.

[0042] In terms of drive method selection, this technical solution offers a variety of options, including powerful and precise hydraulic drive, simple and easy-to-maintain electric screw drive, and inherently safe pneumatic drive, allowing for the selection of the optimal solution based on the specific conditions of different mines.

[0043] In some embodiments, the drive unit 41 further includes a robotic arm 412 disposed at the movable end of the telescopic assembly 411, the movable end of the robotic arm 412 being connected to the water jet cutting head 42 for adjusting the position and angle of the water jet cutting head 42.

[0044] In this embodiment of the invention, the multi-degree-of-freedom robotic arm 412 greatly expands the working range of the waterjet cutting head 42, enabling complex actions such as horizontal scanning cutting, vertical height adjustment, and arbitrary angle directional cutting. This high degree of flexibility allows a single device to complete various complex cutting tasks, significantly improving work efficiency. In terms of structural design, the robotic arm 412 fully considers the special requirements of the mining environment, adopts a modular design for easy maintenance and replacement, uses a high-grade sealing structure for each joint to ensure reliable operation, and is equipped with both mechanical and electrical dual limit protection to effectively prevent accidental damage.

[0045] Optionally, the robotic arm 412 can be equipped with an intelligent control system to realize intelligent functions such as automatic cutting along preset trajectories, real-time position feedback, and automatic obstacle avoidance. These innovations greatly improve the level of automation and safety of the operation.

[0046] In some embodiments, the waterjet cutting mechanism 4 further includes a water supply component 43 and a feed component 44. The two ends of the water supply component 43 are respectively used to connect the waterjet cutting head 42 and the high-pressure water source, and the feed component 44 is used to transport external abrasive particles to the waterjet cutting head 42.

[0047] In this embodiment of the invention, the high-pressure water jet system can generate ultra-high pressure (up to 400 MPa) water flow with a jet velocity reaching several times the speed of sound, possessing extremely strong cutting capabilities. The operator can flexibly adjust key parameters such as water pressure, flow rate, and nozzle shape according to different operational requirements, adapting it to rock formations and support materials of varying hardness. The feeding assembly 44, through the rational selection of different types of abrasives (such as corundum, garnet, and quartz sand), can optimize costs while ensuring cutting effectiveness. The coordinated operation of the two systems achieves optimal cutting results; the addition of abrasives significantly enhances the cutting capability of the water jet, while precise feeding control ensures maximum cutting efficiency.

[0048] Specifically, the water supply component 43 includes a high-pressure water supply pipe 431, an overpressure protection valve 432, a pressure gauge 433, a pressure compensator 434, and a check valve 435.

[0049] In some embodiments, the water supply assembly 43 and the feed assembly 44 are disposed inside the robotic arm 412.

[0050] In this embodiment of the invention, the built-in design of the water supply component 43 and the material supply component 44 overcomes many limitations of traditional external piping systems and solves the technical challenges of equipment integration in complex mining environments. In practical applications, this design improves the overall system performance: by reducing external piping, it not only lowers the risk of equipment damage during operation but also significantly reduces the overall space occupied by the device, optimizes the system's weight distribution, and enhances the equipment's mobility and stability. More importantly, the built-in design completely avoids the entanglement and damage problems that easily occur with traditional external piping during equipment movement, greatly improving the system's reliability. Simultaneously, this integrated design significantly reduces maintenance and repair points, simplifies daily maintenance, and enhances the equipment's engineering level and aesthetics.

[0051] Specifically, from a long-term development perspective, the design also reserves ample room for future system upgrades. Whether it is adding sensor monitoring systems, integrating control modules, or modifying pipelines, these can all be easily implemented on the existing structure, demonstrating the design's foresight and scalability.

[0052] In some embodiments, the feeding assembly 44 employs a flexible worm gear feeding mechanism.

[0053] In this embodiment of the invention, the flexible worm gear feeding mechanism represents a significant breakthrough in precision feeding systems for mining equipment. Compared to traditional rigid feeding systems, it not only solves the problem of easy deformation of the feeding pipeline during the movement of the robotic arm 412, but also achieves high-precision control of the feeding process. In practical applications, this mechanism exhibits several technical advantages: First, its flexible design allows the feeding pipeline to deform freely with the movement of the robotic arm 412 while maintaining stable conveying capacity, greatly improving the system's adaptability; second, the innovative worm gear structure ensures the accuracy of the feeding process, achieving quantitative conveying of abrasives, effectively avoiding blockages, and ensuring uniform feeding; furthermore, this mechanism is capable of adapting to abrasives of different particle sizes, allowing operators to adjust the feeding speed according to actual needs, and the entire system is very easy to clean and maintain. These characteristics make this feeding mechanism particularly suitable for long-term stable operation in complex mining environments.

[0054] In some embodiments, a flexible reinforcing layer is wound around the outer peripheral surface of the water supply component 43.

[0055] In this embodiment of the invention, the flexible reinforcing layer design on the outer periphery of the water supply component 43 demonstrates innovative achievements in material application. This multi-layer composite structure design fully considers the usage requirements of the high-pressure water delivery system in harsh environments, and achieves high system reliability through the scientific selection of materials and optimized structural design.

[0056] Specifically, the reinforcement layer adopts a three-layer composite structure of "steel wire rope-rubber-corrosion protection": the innermost steel wire rope provides the main pressure-bearing capacity to ensure that the pipeline will not rupture under ultra-high pressure; the middle rubber layer plays a sealing and buffering role to prevent damage caused by pressure shock; and the outermost anti-corrosion coating provides excellent environmental adaptability, enabling the entire system to operate reliably for a long time in the humid and corrosive mining environment.

[0057] In the design of the winding structure, the optimal winding angle was determined through calculation, resulting in a more uniform stress distribution. Simultaneously, optimized winding density ensured overall protective effectiveness, and a layered design further improved system reliability. This innovative design gives the water supply system significant advantages such as withstanding high pressure, long service life, and low maintenance costs.

[0058] In some embodiments, the robotic arm 412 is a three-stage stroke robotic arm 412.

[0059] In this embodiment of the invention, through a three-stage stroke structure, the robotic arm 412 can maintain minimal space occupation in the retracted state, while covering a large working area in the extended state. Each stage of the robotic arm 412 is equipped with an independent drive system and a precision position sensor, which, through coordinated control, enables precise positioning of the waterjet cutting head 42.

[0060] Optionally, the robotic arm 412 adopts a lightweight design, minimizing weight while maintaining strength. This not only reduces the load on the drive system but also improves positioning accuracy. In practical applications, operators can easily extend, retract, and precisely position the robotic arm 412 via the control panel, greatly simplifying the operation process and improving work efficiency.

[0061] In some embodiments, a vision component 5 is also included, which is disposed at the bottom of the top beam 11, and the vision acquisition port of the vision component 5 is disposed facing the goaf area.

[0062] In this embodiment of the invention, the vision component 5 embodies the application of intelligent monitoring technology in the field of mining equipment. The vision component 5 not only overcomes the limitations of traditional "blind operation" in mining equipment but also achieves intelligent monitoring and decision support functions through advanced image processing technology. Specifically, the vision component 5 employs multispectral imaging technology, integrating multiple sensors such as a visible light camera, infrared thermal imaging, and a 3D depth camera. The visible light camera features a large aperture design adapted to low-light environments and is equipped with a dustproof and waterproof structure, providing clear images even in dusty environments. The infrared thermal imaging system can capture abnormal rock temperature, promptly identify stress concentration areas, and provide early warnings of potential collapse risks. The 3D depth camera, through structured light or time-of-flight principles, can construct a three-dimensional model of the goaf in real time, providing data support for the accurate measurement of the overhanging roof area. In terms of image processing, the system integrates a deep learning-based intelligent recognition algorithm, which can automatically detect the development trend of cracks in the roof 2, assess the damage level of the support unit, and provide early warning information. This multi-dimensional monitoring method provides operators with comprehensive scene perception capabilities, making the entire operation process more controllable and safer.

[0063] After the hydraulic support body is moved, the hydraulic support device for post-processing the suspended roof moves the water jet cutting head 42 to the second state through the drive unit 41. This allows the water jet cutting head 42 to break the support unit on the top plate 2, enabling the frame to be anchored backward. It can also hydraulically create cracks in the suspended roof through the water jet cutting head 42, thereby intervening in the already formed suspended roof, reducing operating costs and improving safety.

[0064] like Figure 7 As shown, this utility model embodiment provides a post-scaffolding suspension process based on the above-mentioned hydraulic support device for post-scaffolding suspension, including the following steps:

[0065] S1. After the hydraulic support body is moved, the support unit on the top plate 2 is broken by the water jet cutting head 42 of the water cutting mechanism 4.

[0066] S2. If the suspended roof cannot collapse on its own, hydraulic cracking is performed on the suspended roof of the goaf using the water jet cutting head 42.

[0067] In practical applications, the process execution is divided into two main stages: The first stage is the precise removal of the support units. The system first scans the target area using vision component 5 to determine the specific location and state of the support units, and then automatically plans the cutting path based on the characteristics of different support units. The water jet cutting system automatically adjusts the water pressure and abrasive ratio according to the material properties of the support units to ensure cutting effectiveness while avoiding unnecessary disturbance to the surrounding rock strata. If the suspended roof can collapse autonomously after the support is retracted and anchored, step S2 is unnecessary. If the suspended roof cannot collapse autonomously, step S2 is performed. The second stage is the controlled hydraulic cracking of the roof slab 2. The system designs the optimal cracking scheme based on the lithology and stress state of the roof slab 2, including parameters such as the location, depth, and direction of the cracks. Through precisely controlled hydraulic cracking, the overall stability of the roof slab 2 can be effectively reduced, promoting its orderly collapse within the expected range. Throughout the process, the intelligent control system monitors the operating parameters in real time to ensure that all indicators are within safe limits and automatically adjusts them as needed.

[0068] In practical engineering applications, this technical solution demonstrates significant comprehensive advantages. Firstly, in terms of safety, remote operation and intelligent monitoring completely eliminate the need for personnel to enter hazardous areas, greatly improving operational safety. Secondly, in terms of efficiency, thanks to increased automation and the support of intelligent control systems, operational efficiency is more than 200% higher than traditional methods. Thirdly, regarding economic benefits, although the initial investment in equipment is substantial, considering the savings in labor costs, increased operational efficiency, and reduced safety accidents, the overall economic benefits are significantly enhanced. Fourthly, in terms of environmental protection, waterjet cutting technology generates more than 80% less dust than traditional blasting methods and produces no harmful gases, fully meeting the requirements of green mining.

[0069] From a long-term development perspective, this technical solution also has ample room for upgrades. In terms of intelligence, artificial intelligence algorithms can be further introduced to achieve more intelligent decision support; in terms of monitoring, more types of sensors can be added to build a more comprehensive monitoring network; and in terms of control, collaborative operation of multiple devices can be achieved to improve overall operational efficiency. These potential areas for improvement will further enhance the system's performance and application value.

[0070] The innovation of this post-processing overhead hydraulic support device and process is not only reflected in individual technical points, but more importantly, in the organic integration of multiple advanced technologies. The precision of waterjet cutting technology, the flexibility of the robotic arm 412, the intelligence of the vision system, and the reliability of the control system complement and synergize with each other, forming a complete technical solution. This systematic innovation not only solves practical problems in current mining operations, but also provides a new technical path for the construction of future intelligent mines, possessing significant theoretical and practical value.

[0071] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0072] 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 hydraulic support device for post-scaffolding processing of suspended structures, characterized in that, include: The hydraulic support body (1) is disposed between the top plate (2) and the bottom plate (3). The hydraulic support body (1) has a top beam (11) for supporting the top plate (2) and a shield beam (12) disposed at the rear end of the top beam (11). A water jet cutting mechanism (4) is disposed on the side of the top beam (11) away from the top plate (2). The water jet cutting mechanism (4) includes a drive unit (41) and a water jet cutting head (42) disposed at the movable end of the drive unit (41). The water jet cutting head (42) includes a first state located inside the top beam (11) and a second state extending from one end of the top beam (11) adjacent to the shield beam (12). When the water jet cutting head (42) is in the second state, it can break the support unit (6) on the roof plate (2) and / or hydraulically create cracks in the goaf of the roof plate (2) by spraying high-speed fluid.

2. The hydraulic support device for post-scaffolding suspension as described in claim 1, characterized in that, The drive unit (41) includes a telescopic component (411) for driving the waterjet cutting head (42) to switch between the first state and the second state.

3. The hydraulic support device for post-scaffolding suspension as described in claim 2, characterized in that, The drive unit (41) further includes: A robotic arm (412) is located at the movable end of the telescopic assembly (411). The movable end of the robotic arm (412) is connected to the water jet cutting head (42) and is used to adjust the position and angle of the water jet cutting head (42).

4. The hydraulic support device for post-scaffolding suspension as described in claim 3, characterized in that, The waterjet cutting mechanism (4) also includes: Water supply component (43), the two ends of which are respectively used to connect the water jet cutting head (42) and the high-pressure water source; Feeding assembly (44) for feeding external abrasive particles to the waterjet cutting head (42).

5. The hydraulic support device for post-scaffolding suspension as described in claim 4, characterized in that, The water supply component (43) and the feed component (44) are located inside the robotic arm (412).

6. The hydraulic support device for post-scaffolding processing of the suspended roof according to claim 4, characterized in that, The feeding assembly (44) adopts a flexible worm gear feeding mechanism.

7. The hydraulic support device for post-scaffolding suspension according to claim 4, characterized in that, The water supply component (43) has a flexible reinforcing layer wrapped around its outer periphery.

8. The hydraulic support device for post-scaffolding suspension according to claim 3, characterized in that, The robotic arm (412) is a three-stage stroke robotic arm (412).

9. The hydraulic support device for post-scaffolding processing of suspended roofs according to any one of claims 1-8, characterized in that, It also includes a vision component (5) disposed at the bottom of the top beam (11), wherein the vision acquisition port of the vision component (5) is disposed facing the goaf area.

10. The hydraulic support device for post-scaffolding processing of the suspended roof according to claim 4, characterized in that, The water supply assembly (43) includes a high-pressure water supply pipe (431), an overpressure protection valve (432), a pressure gauge (433), a pressure compensator (434), and a check valve (435).

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