Water conservancy cutting system for thin coal seam

Abstract

The present application provides a kind of thin coal seam water cutting system, it is related to thin coal seam mining technical field, to solve the problem of small operation space, large equipment cannot adapt to operation space and mining precision to some extent.The thin coal seam water cutting system provided by the present application, including conveying device and water cutting device;Water cutting device includes cutting mechanism and driving mechanism, driving mechanism includes power assembly and transmission assembly, power assembly is connected with transmission assembly, transmission assembly is arranged along the direction of conveying device, cutting device is connected with transmission assembly, power assembly drives transmission assembly, drives cutting mechanism reciprocating motion along the direction of conveying device.

Description

Technical Field

[0001] This invention relates to the field of thin coal seam mining technology, and in particular to a thin coal seam hydraulic cutting system. Background Technology

[0002] Coal's status as the primary energy source is unlikely to change for a considerable period. Thin coal seams, as an important component of coal resources, are of paramount importance for improving resource utilization and extending the service life of mines through safe and efficient mining.

[0003] However, the working space for mining thin coal seams is extremely limited, with the coal seam thickness typically ranging from 0.8 meters to 1.3 meters, and in some extreme cases even less than 0.8 meters. Within such confined spaces, traditional large mining equipment, such as large coal mining machines and continuous mining machines, often struggle to enter the working face due to their height and structural dimensions. Even if they manage to enter, their mobility, flexibility, and operability are significantly reduced, making it impossible to perform normal combined operations such as cutting, traction, and support. This results in thin coal seam resources facing the long-term predicament of incomplete mining or even abandonment of mining altogether.

[0004] Therefore, there is an urgent need to provide a thin coal seam hydraulic cutting system to solve the problems existing in the current technology to a certain extent. Summary of the Invention

[0005] The purpose of this invention is to provide a thin coal seam hydraulic cutting system, which can solve to some extent the problems of small working space in thin coal seam mining and the inability of large equipment to adapt to the working space and mining accuracy.

[0006] The present invention provides a thin coal seam hydraulic cutting system, including a conveying device and a hydraulic cutting device; the hydraulic cutting device includes a cutting mechanism and a driving mechanism, the driving mechanism includes a power component and a transmission component, the power component is connected to the transmission component, the transmission component is arranged along the arrangement direction of the conveying device, the cutting device is connected to the transmission component, the power component drives the transmission component, thereby causing the cutting mechanism to reciprocate along the arrangement direction of the conveying device.

[0007] The cutting device includes a water gun assembly, a substrate assembly, and a high-pressure water supply mechanism. The water gun assembly includes a water supply pipeline and a high-pressure nozzle. The high-pressure nozzle is mounted on the substrate assembly, and the water inlet of the high-pressure nozzle is connected to the water supply pipeline. The other end of the water supply pipeline is connected to the high-pressure water supply mechanism.

[0008] Specifically, the substrate assembly includes a mounting plate and a connecting plate, the high-pressure nozzle is disposed on the mounting plate, one end of the connecting plate is connected to the mounting plate, and the other end is connected to the transmission assembly.

[0009] Furthermore, the power assembly includes a first power component and / or a second power component, wherein the first power component is disposed at any end of the conveying device or the first power component and the second power component are disposed opposite to each other at both ends of the conveying device; the transmission assembly includes a first transmission wheel, a second transmission wheel, and a transmission belt, wherein the first transmission wheel and the second transmission wheel are disposed opposite to each other at both ends of the conveying device, the first transmission wheel is connected to the output end of the first power component, or the second transmission wheel is connected to the output end of the first power component, or the first transmission wheel is connected to the output end of the first power component and the second transmission wheel is connected to the output end of the second power component, and the transmission belt is disposed around the first transmission wheel and the second transmission wheel.

[0010] Furthermore, the connecting plate includes a docking section and a first connecting section. One end of the docking section is connected to the mounting plate, and the first connecting section is connected to the other end of the docking section. The conveying device is provided with a first guide rod and a second guide rod extending along the arrangement direction of the conveying device. The first guide rod and the second guide rod are arranged parallel to each other. The transmission belt is a chain, which is arranged around the first transmission wheel and the second transmission wheel. The chain passes through the first guide rod and the second guide rod and can move relative to the first guide rod and the second guide rod. The first connecting section includes a first guide portion and an assembly portion. The first guide portion is U-shaped, and the assembly portion extends vertically. One end of the assembly portion is connected to the first guide portion, and the other end is connected to the chain. The first guide rod has a clearance portion that extends through both ends along the length direction of the first guide rod at the position corresponding to the assembly portion.

[0011] Furthermore, the connecting plate also includes a second connecting section, which includes a second guide portion and a connecting rod; the second guide portion is U-shaped, and one end of the connecting rod is connected to the docking section, while the other end is connected to the second guide portion.

[0012] The water gun assembly further includes a mounting connector, which includes a male and a female connector. The high-pressure nozzle is fixedly connected to the male connector and is set at an angle to the male connector. The male connector is threadedly connected to the female connector, and the female connector is detachably connected to the mounting plate.

[0013] Specifically, the male connector includes an insertion section and a first limiting section, and the female connector includes a receiving section and a second limiting section. The mounting plate has a mounting hole at a corresponding position. The receiving section is inserted into the mounting hole, and the insertion section is inserted into the receiving section and threadedly engaged with the receiving section. The maximum diameter of both the first limiting section and the second limiting section is greater than the diameter of the mounting hole. When the insertion section is connected to the receiving section, the first limiting section and the second limiting section press against the mounting plate.

[0014] Furthermore, a limiting recess is formed in the mounting hole, and the limiting recess extends through both ends of the mounting hole along the axial direction of the mounting hole. A limiting protrusion is formed on the outer wall of the female head, and the limiting protrusion is inserted into the limiting recess to circumferentially limit the female head.

[0015] Furthermore, the substrate assembly also includes a supplementary plate, the sidewall of the mounting plate having a first mating portion, and the sidewall of the supplementary plate having a second mating portion, the first mating portion and the second mating portion engaging in a tongue-and-groove fit.

[0016] Compared with existing technologies, the thin coal seam hydraulic cutting system provided by this invention has the following advantages: The thin coal seam hydraulic cutting system provided by the present invention includes a conveying device and a hydraulic cutting device; the hydraulic cutting device includes a cutting mechanism and a driving mechanism, the driving mechanism includes a power component and a transmission component, the power component is connected to the transmission component, the transmission component is arranged along the arrangement direction of the conveying device, the cutting device is connected to the transmission component, the power component drives the transmission component, and drives the cutting mechanism to reciprocate along the arrangement direction of the conveying device.

[0017] Analysis shows that the conveying device provides the installation foundation for the entire hydraulic cutting device. The conveying device in this application is a central trough structure, which can transport the mined material outward. Therefore, the conveying device in this application is arranged along the working face of the thin coal seam, so as to receive and transport the mined material.

[0018] The hydraulic cutting device in this application includes a cutting mechanism and a driving mechanism. The driving mechanism consists of a power component and a transmission component. The power component is connected to the transmission component and provides the power source for the entire reciprocating motion. By connecting the cutting mechanism to the transmission component, it can be driven to perform reciprocating motion. Thus, when the power component is activated, it drives the transmission component to move, which in turn drives the cutting mechanism to perform precise reciprocating motion along the arrangement direction of the conveying device, thereby realizing the cutting operation of thin coal seams.

[0019] It is understandable that, since the conveying device in this application is a central trough structure and the cutting mechanism is a hydraulic cutting mechanism, the high-pressure pump station can be set in an open space outside the mining area and connected to the front end through pipelines. Therefore, neither the conveying device nor the hydraulic cutting device requires a large layout space or mining space. Thus, the hydraulic cutting system provided by this application can solve the problem of limited space in thin coal seam mining operations and the inability of large equipment to adapt. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall layout of the thin coal seam hydraulic cutting system provided in an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of the hydraulic cutting device in a thin coal seam hydraulic cutting system provided in an embodiment of the present invention; Figure 3 A partial structural schematic diagram of the substrate assembly in the thin coal seam hydraulic cutting system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the cooperation between the mounting plate and the high-pressure water gun in the thin coal seam hydraulic cutting system provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the assembly of the mounting joint and mounting plate in the thin coal seam hydraulic cutting system provided in an embodiment of the present invention; Figure 6 This is an exploded view of the installation joint and mounting plate in the thin coal seam hydraulic cutting system provided in an embodiment of the present invention.

[0022] In the diagram: 1-Conveying device; 101-First guide rod; 1011-Avoiding part; 2-First power component; 3-Second power component; 4-First transmission wheel; 5-Chain; 6-High-pressure nozzle; 7-Mounting plate; 701-Mounting hole; 7011-Limiting recess; 702-First mating part; 8-Connecting plate; 801-Dating section; 802-First guide part; 803-Assembly part; 804-Second guide part; 805-Connecting rod; 9-Mounting joint; 901-Male head; 9011-Insert section; 9012-First limiting section; 902-Female head; 9021-Accommodation section; 9022-Second limiting section; 9023-Limiting protrusion; 10-Support device; 11-Thin coal seam. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention 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 invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0028] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0029] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0030] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0031] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0032] like Figure 1 As shown, the present invention provides a thin coal seam hydraulic cutting system, including a conveying device 1 and a hydraulic cutting device; the hydraulic cutting device includes a cutting mechanism and a driving mechanism, the driving mechanism includes a power component and a transmission component, the power component is connected to the transmission component, the transmission component is arranged along the arrangement direction of the conveying device 1, the cutting device is connected to the transmission component, the power component drives the transmission component, and drives the cutting mechanism to reciprocate along the arrangement direction of the conveying device 1.

[0033] Compared with existing technologies, the thin coal seam hydraulic cutting system provided by this invention has the following advantages: The thin coal seam hydraulic cutting system provided by the present invention includes a conveying device 1 and a hydraulic cutting device; the hydraulic cutting device includes a cutting mechanism and a driving mechanism, the driving mechanism includes a power component and a transmission component, the power component is connected to the transmission component, the transmission component is arranged along the arrangement direction of the conveying device 1, the cutting device is connected to the transmission component, the power component drives the transmission component, and drives the cutting mechanism to reciprocate along the arrangement direction of the conveying device 1.

[0034] As can be seen from the analysis, the conveying device 1 can provide the installation foundation for the entire hydraulic cutting device. The conveying device 1 in this application is a central trough structure, which can transport the mined materials outward. Therefore, the conveying device 1 in this application is arranged along the working face of the thin coal seam 11, so as to receive and transport the mined materials.

[0035] The hydraulic cutting device in this application includes a cutting mechanism and a driving mechanism. The driving mechanism consists of a power component and a transmission component. The power component is connected to the transmission component and provides the power source for the entire reciprocating motion. By connecting the cutting mechanism to the transmission component, it can be driven to perform reciprocating motion. Thus, when the power component is activated, it drives the transmission component to move, thereby driving the cutting mechanism to perform precise reciprocating motion along the arrangement direction of the conveying device 1, thereby realizing the cutting operation of the thin coal seam 11.

[0036] It is understandable that, since the conveying device 1 in this application is a central trough structure and the cutting mechanism is a hydraulic cutting mechanism, the high-pressure pump station can be set in an open space outside the mining area and connected to the front end through pipelines. Therefore, neither the conveying device 1 nor the hydraulic cutting device requires a large layout space or mining space. Thus, the hydraulic cutting system provided in this application can solve the problem of limited mining space and inability of large equipment to adapt to thin coal seam 11.

[0037] Optionally, the power component in this application may be a drive motor or a hydraulic motor, while the transmission component may be a conveyor belt structure. That is, the drive motor drives the conveyor belt structure to run, and the conveyor belt structure drives the cutting mechanism to reciprocate, thereby realizing the mining operation of the coal seam.

[0038] It should be noted that the conveying device 1 in this application is a central trough structure commonly used in current underground mining operations. This application only utilizes the existing central trough that needs to be arranged to install the drive mechanism. The function and main structure of the central trough both adopt the existing central trough structure, and will not be elaborated further here. Of course, if... Figure 1As shown, the hydraulic cutting system for thin coal seam 11 provided in this application also needs to include a support device 10, and the support device 10 is an existing self-moving support device 10. On the one hand, it can drive the central slot to move continuously towards the coal seam through its own movement function, so that the mining operation can be carried out continuously. On the other hand, as mining progresses, it can also support and protect the mining area through its own movement, thereby improving the safety of the mining process.

[0039] Optionally, such as Figures 2-4 As shown, the cutting device in this application includes a water gun assembly, a substrate assembly, and a high-pressure water supply mechanism. The water gun assembly includes a water supply pipeline and a high-pressure nozzle 6. The high-pressure nozzle 6 is mounted on the substrate assembly, and the water inlet end of the high-pressure nozzle 6 is connected to the water supply pipeline, while the other end of the water supply pipeline is connected to the high-pressure water supply mechanism.

[0040] The water jet assembly includes a water supply pipeline and a high-pressure nozzle 6. The high-pressure nozzle 6 is mounted on the base plate assembly, ensuring the stability of the spray direction. The inlet end of the high-pressure nozzle 6 is connected to the water supply pipeline, and the other end of the water supply pipeline is connected to the high-pressure water supply mechanism. The high-pressure water supply mechanism typically consists of a high-pressure pump station, a pressure regulating valve, and a safety valve, capable of pressurizing ordinary water to an ultra-high pressure state, forming a water jet with extremely high kinetic energy. The high-pressure water is transported to the high-pressure nozzle 6 through the water supply pipeline and is finally ejected in the form of a high-speed jet to impact, break, and strip the coal seam.

[0041] The substrate assembly in this application provides a stable mounting platform for the high-pressure nozzle 6, preventing nozzle deviation due to the reaction force of the high-pressure water jet and ensuring the accuracy of the cutting direction. By setting up an independent high-pressure water supply mechanism, the system can flexibly adjust the water pressure according to the hardness, thickness, and interbedded rock conditions of the coal seam, achieving adjustable and controllable cutting energy. This can, to some extent, solve the problems of severe wear of cutting teeth and poor cutting accuracy in mechanical cutting methods when facing complex geological conditions in thin coal seams 11. Furthermore, since the cutting mechanism only involves the movement of the water gun assembly, compared to the bulky cutting drum of traditional coal mining machines, its moment of inertia is small and its positioning accuracy is high, thus significantly improving cutting efficiency while greatly enhancing the precision and safety of mining operations.

[0042] Optionally, such as Figures 2-4 As shown, the substrate assembly in this application includes a mounting plate 7 and a connecting plate 8. The high-pressure nozzle 6 is disposed on the mounting plate 7. One end of the connecting plate 8 is connected to the mounting plate 7, and the other end is connected to the transmission assembly.

[0043] Mounting plate 7 is the direct supporting component of high-pressure nozzle 6 in this application. It is used to fix the high-pressure nozzle 6 and can provide a stable and sufficient installation area for the high-pressure nozzle 6. In order to ensure the operational stability of the high-pressure nozzle 6, the high-pressure nozzle 6 can be fixedly connected to the mounting plate 7. The fixed connection can be achieved by welding to ensure that the nozzle can always maintain the preset cutting posture.

[0044] The connecting plate 8 serves as an intermediate force transmission component, with one end fixedly connected to the mounting plate 7 and the other end connected to the transmission assembly. The connecting plate 8 ensures a stable connection between the cutting mechanism and the drive mechanism.

[0045] Optionally, such as Figures 1-3 As shown, the power assembly in this application includes a first power component 2 and / or a second power component 3. The first power component 2 is disposed at any end of the conveying device 1, or the first power component 2 and the second power component 3 are disposed opposite to each other at both ends of the conveying device 1. The transmission assembly includes a first transmission wheel 4, a second transmission wheel, and a transmission belt. The first transmission wheel 4 and the second transmission wheel are disposed opposite to each other at both ends of the conveying device 1. The first transmission wheel 4 is connected to the output end of the first power component 2, or the second transmission wheel is connected to the output end of the first power component 2, or the first transmission wheel 4 is connected to the output end of the first power component 2, and the second transmission wheel is connected to the output end of the second power component 3. The transmission belt is arranged around the first transmission wheel 4 and the second transmission wheel.

[0046] This application can design power components according to specific operating conditions and requirements. When only the first power component 2 is set, the first power component 2 can be arranged at any end of the conveying device 1 to form a single-end drive. When the first power component 2 and the second power component 3 are set at the same time, they are arranged opposite to each other at both ends of the conveying device 1 to form a double-end synchronous drive.

[0047] Accordingly, the transmission assembly includes a first transmission wheel 4, a second transmission wheel, and a transmission belt. The first transmission wheel 4 and the second transmission wheel are positioned opposite each other at both ends of the conveying device 1, serving as the endpoints of power transmission. The first transmission wheel 4 is connected to the output end of the first power component 2, or the second transmission wheel is connected to the output end of the second power component 3, or both are connected to their respective power components. The transmission belt surrounds the first transmission wheel 4 and the second transmission wheel, forming a closed loop transmission circuit, which can better adapt to the reciprocating motion of different mining areas underground. Meanwhile, for longer working faces, single-end drive may cause tension attenuation on the side of the transmission belt furthest from the drive end, affecting the smoothness of the movement. Therefore, this application can further reduce the elastic deformation of the transmission belt during movement by adopting a double-end synchronous drive method, ensuring that the cutting mechanism obtains uniform driving force throughout the entire stroke, and avoiding jamming or positioning deviation due to insufficient driving force.

[0048] It is understood that the structure of the transmission belt in this application, which is in conjunction with the first transmission wheel 4 and the second transmission wheel, can be a transmission belt with a pulley or a sprocket with a chain 5. However, preferably, this application adopts the transmission component structure of a sprocket with a chain 5.

[0049] Optionally, such as Figure 2 Combination Figure 3 As shown, the connecting plate 8 in this application includes a docking section 801 and a first connecting section. One end of the docking section 801 is connected to the mounting plate 7, and the first connecting section is connected to the other end of the docking section 801. The conveying device 1 is provided with a first guide rod 101 and a second guide rod extending along the arrangement direction of the conveying device 1. The first guide rod 101 and the second guide rod are arranged parallel to each other. The transmission belt is a chain 5, which is arranged around the first transmission wheel 4 and the second transmission wheel. The chain 5 passes through the first guide rod 101 and the second guide rod and can move relative to the first guide rod 101 and the second guide rod. The first connecting section includes a first guide part 802 and an assembly part 803. The first guide part 802 is U-shaped, and the assembly part 803 extends in the vertical direction. One end of the assembly part 803 is connected to the first guide part 802, and the other end is connected to the chain 5. The first guide rod 101 has a clearance part 1011 that extends through both ends along the length direction of the first guide rod 101 at the position corresponding to the assembly part 803.

[0050] Since the connection of each link is not fixed, if a tension wheel or other limiting structure is not set in the system, the chain 5 is very likely to sag in the middle position, which will affect the overall transmission accuracy and even cause interference with other structures. This application provides a stable guide for the reciprocating motion of the chain 5 by providing a first guide rod 101 and a second guide rod that extend along the arrangement direction of the conveying device 1 and are parallel to each other. That is, the first guide rod 101 and the second guide rod can effectively limit the degree of freedom of the chain 5 in the non-motion direction during the transmission process and prevent the chain 5 from sag.

[0051] The U-shaped first guide portion 802 in this application allows the first guide portion 802 to straddle the first guide rod 101 during movement, thereby enabling it to slide smoothly along the first guide rod 101 and play a major guiding role.

[0052] Accordingly, in this application, one end of the assembly part 803 is connected to the first guide part 802, and the other end is connected to the chain 5, thus realizing the connection between the substrate assembly and the transmission belt. Since the assembly part 803 is provided inside the first guide part 802, the first guide rod 101 has a clearance part 1011 that extends through both ends along the length direction at the position corresponding to the assembly part 803. The clearance part 1011 provides movement space for the connection between the assembly part 803 and the chain 5, so that the assembly part 803 will not interfere with the first guide rod 101 when it moves with the chain 5.

[0053] Preferably, the width of the clearance portion 1011 is slightly larger than the thickness of the assembly portion 803, so that the reciprocating motion process has two sets of limiting and guiding. One set is the limiting and guiding formed by the movement of the assembly portion 803 along the clearance portion 1011, and the other set is the limiting and guiding formed by the first guide portion 802 partially surrounding the outside of the first guide rod 101. Through the two sets of guiding, the reciprocating motion process of the mounting plate 7 and the high-pressure nozzle 6 driven by the mounting plate 7 can be made more stable, thereby ensuring the accuracy of the coal seam cutting operation.

[0054] Optionally, such as Figure 2 Combination Figure 3 As shown, the connecting plate 8 in this application also includes a second connecting section, which includes a second guide portion 804 and a connecting rod 805; the second guide portion 804 is U-shaped, and one end of the connecting rod 805 is connected to the docking section 801, and the other end is connected to the second guide portion 804.

[0055] Since the chain 5, after being arranged around the first transmission wheel 4 and the second transmission wheel, can form two parallel chains that move in a straight line, the two parallel first guide rods 101 and second guide rods provided in this application can stably support the chain. Furthermore, the connecting rod 805 and the second guide part 804 connected on the docking section 801 can cooperate with the first guide part 802 to form a limiting and guiding structure between the two parallel guide rods during movement. That is, when the chain 5 drives the connecting plate 8 to move, the first guide part 802 moves along the first guide rod 101 corresponding to the outside of the first guide rod 101, and the second guide part 804 moves along the second guide rod corresponding to the outside of the second guide rod. Since the first guide part 802 and the second guide part 804 are connected by the docking part and the connecting rod 805, they can further play a supporting role, thereby further ensuring the horizontality and stability of the movement process, and thus ensuring the accuracy of the cutting operation.

[0056] Optionally, such as Figures 4-6As shown, the water gun assembly in this application also includes a mounting connector 9, which includes a male connector 901 and a female connector 902. The high-pressure nozzle 6 is fixedly connected to the male connector 901, and the high-pressure nozzle 6 is set at an angle to the male connector 901. The male connector 901 is threadedly connected to the female connector 902, and the female connector 902 is detachably connected to the mounting plate 7.

[0057] The mounting connector 9 in this application consists of a male connector 901 and a female connector 902. Since the male connector 901 and the female connector 902 can be detachably connected by threads, and the high-pressure nozzle 6 is set at an angle to the male connector 901, the angle can be quickly adjusted by different thread designs between the male connector 901 and the female connector 902. At the same time, the water gun assembly and the mounting plate 7 can be quickly disassembled and assembled during maintenance.

[0058] It is understandable that, such as Figure 4 As shown, in this application, six high-pressure nozzles 6 are installed on the mounting plate 7, and they are arranged in pairs along the vertical direction. Taking each pair of vertical nozzles as a group as an example, the angles of the three groups of nozzles with the mounting plate 7 can be the same, such as spraying water perpendicular to the mounting plate 7. Different angles can also be used, such as the first group spraying forward, the middle group spraying water perpendicular to the mounting plate 7, and the last group spraying backward, so as to form an approximately rectangular cutting surface to realize the cutting operation of the coal seam.

[0059] It should be added that the male connector 901 and the female connector 902 are connected by threads, which not only allows for quick assembly and disassembly, but also can withstand the huge axial thrust brought by high-pressure water to a certain extent, ensuring a reliable connection.

[0060] Accordingly, the detachable connection between the female nozzle 902 and the mounting plate 7 in this application can be fixed by bolts or clips. In practical applications, when it is necessary to replace the high-pressure nozzle 6 with one of different diameters or with wear, it is only necessary to unscrew the male nozzle 901 from the female nozzle 902, without disassembling the female nozzle 902 and the mounting plate 7, making the operation extremely simple.

[0061] A sealing gasket can be added between the male connector 901 and the female connector 902 to form a sealed connection. Then, the water supply pipeline can be connected to the female connector 902 to enable water delivery. Of course, this is only an alternative solution. The connection between the water supply pipeline and the high-pressure nozzle 6 is still designed to ensure pressure and stability. The fixed connection between the high-pressure nozzle 6 and the male connector 901 can also be achieved by using a snap-fit ​​and slot-fit method, which facilitates the disassembly of the male connector 901 and the high-pressure nozzle 6 during maintenance.

[0062] Optionally, such as Figure 5 Combination Figure 6As shown, the male connector 901 in this application includes an insertion section 9011 and a first limiting section 9012, and the female connector 902 includes a receiving section 9021 and a second limiting section 9022. The mounting plate 7 has a mounting hole 701 at a corresponding position. The receiving section 9021 is inserted into the mounting hole 701. The insertion section 9011 is inserted into the receiving section 9021 and is threadedly engaged with the receiving section 9021. The maximum diameter of the first limiting section 9012 and the second limiting section 9022 is greater than the diameter of the mounting hole 701. When the insertion section 9011 is connected to the receiving section 9021, the first limiting section 9012 and the second limiting section 9022 press against the mounting plate 7.

[0063] During assembly, the receiving section 9021 of the female head 902 is inserted into the mounting hole 701, and the insertion section 9011 of the male head 901 is inserted into the receiving section 9021 and threadedly engaged with it. The maximum diameters of the first limiting section 9012 and the second limiting section 9022 are both larger than the diameter of the mounting hole 701. After the insertion section 9011 and the receiving section 9021 are screwed together, the first limiting section 9012 and the second limiting section 9022 are located on both sides of the mounting plate 7, respectively, pressing the mounting plate 7 tightly in the middle. This can, to a certain extent, avoid the problem of the nozzle connection loosening under high pressure and the problem of the mounting plate 7 bearing concentrated stress.

[0064] Optionally, such as Figure 4 Combination Figure 5 As shown, a limiting recess 7011 is formed in the mounting hole 701 of this application. The limiting recess 7011 extends through both ends of the mounting hole 701 along the axial direction of the mounting hole 701. A limiting protrusion 9023 is formed on the outer wall of the female head 902. The limiting protrusion 9023 is inserted into the limiting recess 7011 to circumferentially limit the female head 902.

[0065] During assembly, when the female connector 902 is inserted into the mounting hole 701, the limiting protrusion 9023 precisely inserts into the limiting recess 7011, thereby circumferentially limiting the female connector 902. This prevents the female connector 902 from easily rotating with the male connector 901, which could lead to ineffective tightening or damage to the pipeline. Furthermore, because the female connector 902 is circumferentially limited, it cannot rotate relative to the mounting plate 7. Therefore, when tightening the male connector 901, only the male connector 901 needs to be rotated, while the female connector 902 remains stationary. This makes operation extremely labor-saving and provides a stable preload. More importantly, during operation, the reaction force generated by the high-pressure water jet and equipment vibration can tend to loosen the threaded connection. However, because the female connector 902 is firmly restrained by the limiting recess 7011, it cannot rotate circumferentially, thus preventing the connection from loosening due to vibration to a certain extent, greatly improving the safety and reliability of the connection.

[0066] In this application, the female head 902 has a plurality of limiting protrusions 9023 formed circumferentially, and the limiting protrusions 9023 extend radially outward. Preferably, there are four limiting protrusions 9023 in this application, which are arranged in a cross shape, thereby enabling the limiting of the female head 902 circumferentially.

[0067] Furthermore, since the thread coverage area on the female head 902 and the male head 901 is the same, the male head 901 and the female head 902 can ensure that the water spraying direction of the high-pressure nozzle 6 is consistent after assembly. Through the four limiting protrusions 9023, the female head 902 can be rotated by a certain angle before assembly, such as 90°, 180°, and 270° in this embodiment, thereby changing the orientation of the high-pressure nozzle 6. This allows for rapid adjustment of the orientation of the high-pressure nozzle 6 according to specific needs, improving work efficiency and adapting to temporary adjustments of the work stroke at the cutting site.

[0068] Optionally, such as Figure 4 As shown, the substrate assembly in this application also includes a supplementary plate. The sidewall of the mounting plate 7 has a first mating portion 702, and the sidewall of the supplementary plate has a second mating portion. The first mating portion 702 and the second mating portion are tongue and groove mated together.

[0069] The first mating part 702 formed on the side wall of the mounting plate 7 and the corresponding second mating part formed on the side wall of the supplementary plate enable a tongue-and-groove fit between the mounting plate 7 and the supplementary plate. A tongue-and-groove fit refers to the interlocking of concave and convex structures. Therefore, the first mating part 702 formed on the two side walls of the mounting plate 7 in this application can be a mating groove, and the side wall of the supplementary plate can be formed with a mating boss. Thus, during assembly, the supplementary plate and the mounting plate 7 can be quickly connected through the mating groove and the mating boss.

[0070] Of course, in this application, a stop portion can be formed at the bottom of the first mating part 702 or the second mating part. For example, taking the first mating part 702 as a mating groove, the first mating part 702 only penetrates one end of the mounting plate 7 in the vertical direction. Therefore, after the supplementary plate is connected, the end of the second mating part can be mounted on the stop portion, thereby avoiding the problem of the supplementary plate shifting.

[0071] It should be added here that, in this application Figure 4 The mounting plate 7 shown can be the smallest working unit. Of course, a plate with two nozzles can also be used as the smallest working unit. Multiple plates can be spliced ​​together through the first mating part 702 and the second mating part formed on both sides, so that the cutting surface can be increased or decreased according to specific work requirements.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thin coal seam hydraulic cutting system, characterized in that, This includes conveying devices and hydraulic cutting devices; The hydraulic cutting device includes a cutting mechanism and a driving mechanism. The driving mechanism includes a power component and a transmission component. The power component is connected to the transmission component. The transmission component is arranged along the arrangement direction of the conveying device. The cutting device is connected to the transmission component. The power component drives the transmission component, causing the cutting mechanism to reciprocate along the arrangement direction of the conveying device.

2. The thin coal seam hydraulic cutting system according to claim 1, characterized in that, The cutting device includes a water gun assembly, a substrate assembly, and a high-pressure water supply mechanism. The water gun assembly includes a water supply pipeline and a high-pressure nozzle. The high-pressure nozzle is mounted on the substrate assembly, and the water inlet of the high-pressure nozzle is connected to the water supply pipeline. The other end of the water supply pipeline is connected to the high-pressure water supply mechanism.

3. The thin coal seam hydraulic cutting system according to claim 2, characterized in that, The substrate assembly includes a mounting plate and a connecting plate. The high-pressure nozzle is disposed on the mounting plate. One end of the connecting plate is connected to the mounting plate, and the other end is connected to the transmission assembly.

4. The thin coal seam hydraulic cutting system according to claim 3, characterized in that, The power assembly includes a first power component and / or a second power component, wherein the first power component is disposed at any end of the conveying device or the first power component and the second power component are disposed opposite to each other at both ends of the conveying device. The transmission assembly includes a first transmission wheel, a second transmission wheel, and a transmission belt. The first transmission wheel and the second transmission wheel are disposed opposite to each other at both ends of the conveying device. The first transmission wheel is connected to the output end of the first power component, or the second transmission wheel is connected to the output end of the first power component, or the first transmission wheel is connected to the output end of the first power component and the second transmission wheel is connected to the output end of the second power component. The transmission belt is arranged around the first transmission wheel and the second transmission wheel.

5. The thin coal seam hydraulic cutting system according to claim 4, characterized in that, The connecting plate includes a mating section and a first connecting section, one end of the mating section is connected to the mounting plate, and the first connecting section is connected to the other end of the mating section; The conveying device is provided with a first guide rod and a second guide rod extending along the arrangement direction of the conveying device. The first guide rod and the second guide rod are arranged parallel to each other. The transmission belt is a chain. The chain is arranged around the first transmission wheel and the second transmission wheel, and the chain passes through the first guide rod and the second guide rod, and can move relative to the first guide rod and the second guide rod. The first connecting section includes a first guide portion and an assembly portion. The first guide portion is U-shaped, and the assembly portion extends vertically, with one end connected to the first guide portion and the other end connected to the chain. The first guide rod has a clearance portion that extends through both ends along the length direction of the first guide rod at the position corresponding to the position of the assembly portion.

6. The thin coal seam hydraulic cutting system according to claim 5, characterized in that, The connecting plate further includes a second connecting section, which includes a second guide portion and a connecting rod; The second guide portion is U-shaped, and one end of the connecting rod is connected to the docking section, while the other end is connected to the second guide portion.

7. The thin coal seam hydraulic cutting system according to claim 3, characterized in that, The water gun assembly also includes a mounting connector, which includes a male and a female connector. The high-pressure nozzle is fixedly connected to the male connector and is set at an angle to the male connector. The male connector is threadedly connected to the female connector, and the female connector is detachably connected to the mounting plate.

8. The thin coal seam hydraulic cutting system according to claim 7, characterized in that, The male connector includes an insertion section and a first limiting section, and the female connector includes a receiving section and a second limiting section. The mounting plate has a mounting hole at a corresponding position. The receiving section is inserted into the mounting hole, and the insertion section is inserted into the receiving section and threadedly engaged with the receiving section. The maximum diameter of the first limiting section and the second limiting section is greater than the diameter of the mounting hole. When the insertion section is connected to the receiving section, the first limiting section and the second limiting section press against the mounting plate.

9. The thin coal seam hydraulic cutting system according to claim 8, characterized in that, A limiting recess is formed in the mounting hole, and the limiting recess extends through both ends of the mounting hole along the axial direction of the mounting hole. A limiting protrusion is formed on the outer wall of the female head, and the limiting protrusion is inserted into the limiting recess to circumferentially limit the female head.

10. The thin coal seam hydraulic cutting system according to claim 3, characterized in that, The substrate assembly further includes a supplementary plate, the sidewall of the mounting plate having a first mating portion, and the sidewall of the supplementary plate having a second mating portion, the first mating portion and the second mating portion engaging in a tongue-and-groove fit.

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