Spraying angle adjustable type cutting spraying device and method for continuous mining machine

Abstract

The invention belongs to the technical field of mining equipment, and relates to an adjustable spraying angle type cutting spraying device and method for a continuous mining machine. Comprising a cutting arm, a cutting spraying mechanism, a cutting motor, a gearbox, a cutting roller and at least one motor mounting frame, the motor mounting frame is connected with the cutting arm; the cutting motor is arranged in the motor mounting frame; the gearbox is in transmission connection with the output end of the cutting motor; the cutting roller is connected with the output end of the gearbox; the cutting spraying mechanism is arranged on the outer side of the motor mounting frame; wherein the cutting spraying mechanism comprises a spraying block and a spraying nozzle; the spraying nozzle is installed on the spraying block, the spraying block is rotationally connected with the motor installation frame, and an angle adjusting bolt used for driving the spraying block to rotate relative to the motor installation frame is arranged on the spraying block. According to the invention, all-directional coverage of the spraying range and real-time accurate regulation and control of the spraying angle are realized, and the dust falling efficiency of the long and narrow working face is obviously improved.

Description

Technical Field

[0001] This invention belongs to the field of mining equipment technology, and relates to an adjustable spray angle cutting spray device and method for continuous mining machines. Background Technology

[0002] Potash is an important chemical mineral raw material, widely used in agriculture, chemical industry, and other fields. In the mining of potash, continuous mining machines are one of the main mining equipment. The cutting section of a continuous mining machine typically uses a horizontal axis cutting drum to crush the salt wall. Cutting teeth are installed on the cutting drum; the rotation of the drum drives the cutting teeth to cut the salt body, thus enabling tunnel excavation. During the crushing of potash by the cutting drum, a large amount of dust is generated. This dust not only pollutes the working environment but also affects the visibility and health of operators. Therefore, a dust suppression spray system must be used to capture and treat the dust. However, potash has the physical property of being easily soluble in water. If the spray water volume is too large, it will lead to excessive water accumulation in the tunnel. Accumulated water will cause flow erosion of the saline floor in the tunnel, damaging the tunnel's formation quality, affecting the stability and safety of the tunnel structure, and creating safety hazards.

[0003] To address the aforementioned issues, existing technologies typically utilize the cooling water inside the motor of a continuous mining machine as the spray water source. That is, the motor cooling water first cools the cutting motor, and then is transported through pipelines to a spray device near the cutting drum for dust suppression. However, this water supply method has inherent technical limitations: firstly, due to the pressure resistance limitations of the motor cooling chamber, the cooling water pressure cannot be too high, typically not exceeding 3 MPa; secondly, to reduce roadway drainage, the cooling water flow rate cannot be too large. Ensuring good dust suppression performance of the spray device under low water pressure and low flow conditions has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides an adjustable spray angle cutting spray device and method for continuous mining machines, which achieves all-round coverage of the spray range and real-time precise control of the spray angle, significantly improving the dust reduction efficiency of narrow working faces.

[0005] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, the present invention provides an adjustable spray angle cutting spray device for a continuous mining machine, comprising a cutting arm, a cutting spray mechanism, a cutting motor, a gearbox, a cutting drum and at least one motor mounting bracket; The motor mounting bracket is connected to the cutting arm; the cutting motor is disposed inside the motor mounting bracket; the gearbox is drivenly connected to the output end of the cutting motor; the cutting drum is connected to the output end of the gearbox; the cutting spray mechanism is disposed on the outside of the motor mounting bracket; The cutting spray mechanism includes a spray block and a spray nozzle; the spray nozzle is mounted on the spray block, the spray block is rotatably connected to the motor mounting bracket, and the spray block is provided with an angle adjustment bolt for driving the spray block to rotate relative to the motor mounting bracket.

[0006] Preferably, the spray block is connected to the motor mounting bracket by a fixing bolt, the spray block is provided with a spherical pad hole, and a spherical pad is provided in the spherical pad hole; the fixing bolt passes through the spherical pad and the spray block in sequence, and is connected to the motor mounting bracket.

[0007] Preferably, the spray block is further provided with a slotted screw hole; the fixing bolt passes through the slotted screw hole and is connected to the motor mounting bracket.

[0008] Preferably, the cutting motor is provided with a motor water inlet and a motor water outlet; the spray block is provided with a spray mechanism water inlet, and the motor water outlet and the spray mechanism water inlet are connected by a pipeline.

[0009] Preferably, the motor mounting bracket is provided with a protective plate on its upper part; the protective plate is located above the cutting spray mechanism.

[0010] Preferably, the motor mounting bracket includes a first motor mounting bracket and a second motor mounting bracket; the first motor mounting bracket and the second motor mounting bracket are symmetrically arranged on both sides of the gearbox, and each motor mounting bracket is provided with one cutting motor, and the output ends of the two cutting motors are connected to the input end of the gearbox.

[0011] Preferably, the angle adjusting bolt includes an upper adjusting bolt and a lower angle adjusting bolt; the upper adjusting bolt passes through the spray block, and the end of the upper adjusting bolt abuts against the first motor mounting bracket; the lower angle adjusting bolt passes through the spray block, and the end of the lower angle adjusting bolt abuts against the second motor mounting bracket.

[0012] Preferably, the spray block has two threaded holes; the upper adjusting bolt and the lower angle adjusting bolt are respectively installed in the two threaded holes, and the upper adjusting bolt is located above the lower angle adjusting bolt.

[0013] Preferably, the spray block is provided with a mounting hole, and the spray nozzle is disposed in the mounting hole.

[0014] Secondly, the present invention provides an adjustable-angle cutting spray method for continuous mining machines, comprising the following steps: The cutting motor is started, and the power output by the cutting motor is transmitted to the cutting drum through the gearbox, driving the cutting drum to rotate and cut the rock wall; Based on the operating parameters during the cutting operation, the spray block is driven to rotate relative to the motor mounting bracket by operating the angle adjusting bolt, so as to adjust the spray angle of the spray nozzle; Cooling water is introduced into the spray nozzle so that it is sprayed out at an adjusted spray angle to suppress dust generated during the cutting process.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By placing the cutting spray mechanism on the outside of the motor mounting bracket and rotatably connecting its spray block to the bracket, and with the driving action of the angle adjustment bolt, the spray angle can be independently adjusted. In actual operation, the spray angle of the spray block can be flexibly adjusted according to changes in water pressure, water flow, and the different positions of the cutting drum, ensuring that the spray always accurately covers the dust-generating area, significantly improving dust suppression efficiency. At the same time, the rotatable connection between the spray block and the motor mounting bracket is compact and easy to adjust, allowing for quick maintenance and adaptation without disassembling the entire device. This effectively improves the applicability and reliability of the device and solves the technical problems of fixed angle, difficult adjustment, and poor adaptability of existing spray devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A first-person perspective schematic diagram of the cutting section of a continuous mining machine; Figure 2 This is a second-view schematic diagram of the cutting section of a continuous mining machine; Figure 3 This is a schematic diagram of an adjustable spray angle cutting spray device according to the present invention; Figure 4 This is a cross-sectional view of an adjustable spray angle cutting spray device according to the present invention; Figure 5 This is a schematic diagram of the horizontal state of an adjustable spray angle cutting spray device according to the present invention; Figure 6This is a schematic diagram illustrating the upward adjustment of an adjustable spray angle cutting spray device according to the present invention; Figure 7 This is a schematic diagram illustrating the downward adjustment of an adjustable spray angle cutting spray device according to the present invention.

[0018] The components include: 1. Cutting drum; 2. Cutting spray mechanism; 3. Protective plate; 4. Motor mounting bracket; 5. Cutting motor; 6. Gearbox; 7. Cutting arm; 8. Motor water inlet; 9. Motor water outlet; 10. Spray mechanism water inlet; 11. Spray block; 12. Spray nozzle; 13. Groove screw hole; 14. Spherical pad hole; 15. Spherical pad; 16. Fixing bolt; 17. Upper adjusting bolt; 18. Lower angle adjusting bolt. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" 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 present 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, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply refers to its direction relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 the present invention according to the specific circumstances.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings: The first objective of this invention is to provide an adjustable-angle cutting spray device for continuous mining machines, such as... Figures 1-2 As shown, it includes a cutting arm 7, a cutting spray mechanism 2, a cutting motor 5, a gearbox 6, a cutting drum 1, and at least one motor mounting bracket 4; The motor mounting frame 4 is connected to the cutting arm 7; the cutting motor 5 is disposed inside the motor mounting frame 4; the gearbox 6 is connected to the output end of the cutting motor 5; the cutting drum 1 is connected to the output end of the gearbox 6, thereby driving the cutting drum 1 to rotate and cut the ore; the cutting spray mechanism 2 is disposed on the outside of the motor mounting frame 4. like Figures 3-4 As shown, the cutting spray mechanism 2 includes a spray block 11 and a spray nozzle 12. The spray nozzle 12 is mounted on the spray block 11, which is rotatably connected to the motor mounting bracket 4. The spray block 11 is provided with an angle adjustment bolt for driving the spray block 11 to rotate relative to the motor mounting bracket 4. One end of the angle adjustment bolt is connected to the motor mounting bracket 4. By turning the angle adjustment bolt, the spray block 11 can be driven to swing around the rotation axis, thereby changing the spray angle of the spray nozzle 12. In practical applications, operators can flexibly adjust the spray direction according to the water pressure, water flow, and cutting position under actual working conditions to ensure that the spray always covers the cutting area at the optimal angle, effectively improving dust suppression efficiency.

[0026] For example, the spray block 11 is fixedly installed on the outside of the motor mounting bracket 4 by fixing bolts 16. In order to realize the angle adjustment function and ensure the connection reliability after adjustment, a spherical pad hole 14 is provided on the spray block 11. A spherical pad 15 is installed in the spherical pad hole 14. The rod of the fixing bolt 16 passes through the spherical pad 15 and the spray block 11 in sequence and is then fastened to the threaded hole on the motor mounting bracket 4, thereby pressing the spray block 11 onto the surface of the motor mounting bracket 4. Since the outer spherical surface of the spherical pad 15 and the inner spherical surface of the spherical pad hole 14 can slide relative to each other, when the operator adjusts the spray angle of the spray block 11 through the angle adjustment bolt, the spray block 11 will deflect around the axis of the fixing bolt 16. At this time, the spherical pad 15 can rotate adaptively within the spherical pad hole 14, so that the head end face of the fixing bolt 16 always maintains parallel contact with the end face of the spherical pad 15. This ensures that even when the spray block 11 is at different deflection angles, the axis of the fixing bolt 16 can still be perpendicular to the mounting surface of the motor mounting bracket 4, avoiding the problem of uneven bolt force or preload failure caused by non-parallel contact surfaces.

[0027] For example, the spray block 11 is also provided with a slotted screw hole 13, which is an elongated through hole extending along the swing direction of the spray block 11. The fixing bolt 16 passes through the slotted screw hole 13 and is fastened to the motor mounting bracket 4. When the spray angle of the spray block 11 is adjusted by the angle adjusting bolt, the spray block 11 deflects around the fixed point. The rod of the fixing bolt 16 can slide adaptively along the length direction in the slotted screw hole 13, thereby compensating for the displacement deviation caused by the angle change. This ensures that the fixing bolt 16 can always be smoothly aligned with the threaded hole of the motor mounting bracket 4 and screwed in, avoiding installation jamming or additional bending moment on the bolt due to hole misalignment.

[0028] For example, the cutting motor 5 has a motor water inlet 8 and a motor water outlet 9 on its housing; the spray block 11 has a spray mechanism water inlet 10, and the motor water outlet 9 and the spray mechanism water inlet 10 are connected by a pressure-resistant rubber hose or metal pipe. In actual operation, external water supply first enters the water cooling channel inside the cutting motor 5 from the motor water inlet 8. When the water flows through the motor housing, it fully absorbs the heat generated by the motor operation, and performs forced cooling of the motor to ensure its continuous operation stability. The heated cooling water then flows out from the motor water outlet 9 and is directly introduced into the spray mechanism water inlet 10 through the connecting pipe, and finally delivered to the spray nozzle 12 to form a mist-like water curtain for dust suppression.

[0029] For example, the motor mounting bracket 4 is provided with a protective plate 3 on its upper part; the protective plate 3 is located above the cutting spray mechanism 2.

[0030] Specifically, a protective plate 3 is fixedly installed on the upper part of the motor mounting frame 4. The protective plate 3 is located directly above the cutting spray mechanism 2 and extends forward to form a shielding structure. During the cutting operation of the continuous mining machine, the high-speed rotation of the cutting drum 1 will cause coal and rock fragments to fly everywhere. At the same time, the dust concentration in the working face is extremely high. The protective plate 3 set on the outside of the motor mounting frame 4 can effectively block the falling gangue and large dust particles from directly impacting the spray block 11, spray nozzle 12 and connecting pipeline, and prevent the spray mechanism from being damaged or blocked by external impact. At the same time, the protective plate 3 can also guide the dust-laden airflow to flow downward to the cutting area to a certain extent, reduce the upward dispersion of dust, and indirectly enhance the dust suppression effect of the spray.

[0031] For example, the motor mounting bracket 4 includes a first motor mounting bracket and a second motor mounting bracket; the first motor mounting bracket and the second motor mounting bracket are symmetrically arranged on both sides of the gearbox 6, and each motor mounting bracket 4 is equipped with one cutting motor 5, the output ends of the two cutting motors 5 are connected to the input end of the gearbox 6. This symmetrical dual-motor arrangement not only enables greater output power within a limited space, meeting the demand of continuous mining machines for large cutting forces, but also makes the two motor mounting brackets 4 form a balanced force structure relative to the gearbox 6. During operation, the torques generated by the two cutting motors 5 are balanced, effectively reducing the lateral load and vibration of the whole machine and improving the stability of the cutting process.

[0032] For example, the angle adjusting bolt includes an upper adjusting bolt 17 and a lower angle adjusting bolt 18; the upper adjusting bolt 17 passes through the spray block 11, and the end of the upper adjusting bolt 17 abuts against the first motor mounting bracket; the lower angle adjusting bolt 18 passes through the spray block 11, and the end of the lower angle adjusting bolt 18 abuts against the second motor mounting bracket.

[0033] like Figures 5-7 As shown, during actual adjustment, if the water flow is slow, the water pressure is low, and the spray angle is too low, and the spray block 11 needs to be adjusted upwards, simply tighten the lower angle adjusting bolt 18 so that its end pushes against the second motor mounting bracket to generate a reaction force, while simultaneously loosening the upper adjusting bolt 17 to release the constraint. The spray block 11 will then swing upwards around the axis of the fixing bolt 16. Conversely, if the water pressure is high and the water flow is rapid, and the spray angle needs to be adjusted downwards, tighten the upper adjusting bolt 17 and simultaneously loosen the lower angle adjusting bolt 18. The pushing action of the upper bolt will cause the spray block 11 to swing downwards to the desired position. In addition, the two angle adjusting bolts, when locked, form a stable three-point support structure with the fixing bolt 16, which can effectively resist the continuous vibration and water pressure impact that the spray block 11 experiences in harsh underground working conditions, ensuring that the adjusted spray angle remains stable over a long period of time.

[0034] For example, the spray block 11 has two through threaded holes spaced vertically; the upper adjusting bolt 17 and the lower angle adjusting bolt 18 are respectively installed in the two threaded holes, with the upper adjusting bolt 17 located above the lower angle adjusting bolt 18. By directly installing the adjusting bolts on the spray block 11 body, there is no need to additionally process complex positioning or support structures on the motor mounting bracket 4, greatly simplifying the installation process and assembly accuracy requirements.

[0035] For example, the spray block 11 is provided with mounting holes, and the spray nozzle 12 is disposed in the mounting holes. Specifically, multiple mounting holes are provided on the front end face of the spray block 11 according to a preset spray coverage range. The spray nozzle 12 is screwed and fixed in the mounting holes by the external thread at its root, and a sealing gasket or a conical seal can be provided at the joint surface to ensure no leakage under the action of high-pressure water flow. The spray direction of the spray nozzle 12 is consistent with the axial direction of the mounting hole. By opening mounting holes at different positions and angles, the jets of multiple spray nozzles 12 can form a three-dimensional intersecting fan-shaped mist curtain in the cutting area.

[0036] For example, the spray block 11 has a flow channel extending along the length direction inside; multiple spray nozzles 12 are provided, and the multiple spray nozzles 12 are spaced apart along the length direction of the spray block 11; the flow channel is respectively connected to the water inlet 10 of the spray mechanism and the inlet of the spray nozzle 12.

[0037] Specifically, one end of the flow channel is connected to the water inlet 10 of the spray mechanism, and multiple spray nozzles 12 are spaced apart along the length of the spray block 11. The water inlet of each spray nozzle 12 is connected to the main flow channel through an internal branch hole. This built-in flow channel design allows the high-pressure water flow to be evenly distributed to each spray nozzle 12 along the length of the spray block 11, avoiding water pressure loss and uneven flow distribution caused by too many pipeline branches, and ensuring that each spray nozzle 12 can spray with stable pressure and flow to form a uniform fan-shaped mist. Secondly, the multiple spray nozzles 12 are spaced apart along the length of the spray block 11, so that the spray coverage area is effectively extended along the axial direction of the cutting roller 1. The mist sprayed by each spray nozzle 12 is connected to form a continuous dust suppression barrier, avoiding the spray blind spots caused by a single nozzle.

[0038] A second objective of this invention is to provide an adjustable-angle cutting spray method for continuous mining machines, comprising the following steps: The cutting motor 5 is started, and the power output by the cutting motor 5 is transmitted to the cutting drum 1 through the gearbox 6, driving the cutting drum 1 to rotate and cut the rock wall; Based on the working parameters during the cutting operation, the spray block 11 is driven to rotate relative to the motor mounting bracket 4 by operating the angle adjustment bolt, so as to adjust the spray angle of the spray nozzle 12; Cooling water is introduced into the spray nozzle 12 so that it is sprayed out at an adjusted spray angle to suppress dust generated during the cutting process.

[0039] This method adjusts the spray angle in real time to adapt to changes in water pressure and cutting position requirements under different working conditions, ensuring that the spray nozzle 12 is always aimed at the dust-generating point at the optimal angle. At the same time, it makes full use of the circulating water of the cooling motor for spraying, realizing the coordinated operation of power drive, angle adjustment and spray dust suppression. This not only effectively expands the dust suppression coverage and improves the atomization effect, but also simplifies the water system and realizes the recycling of water resources, significantly improving the cutting dust suppression efficiency and overall operational safety of continuous mining machines under complex working conditions.

[0040] Example This embodiment provides an adjustable spray angle cutting spray method for continuous mining machines, including the following steps: First, the two cutting motors 5, which are symmetrically arranged in the first and second motor mounting frames on both sides of the gearbox 6, are started. The power output from the two cutting motors 5 is reduced and increased in torque by the gearbox 6 and then transmitted to the cutting drum 1, driving the cutting drum 1 to rotate at high speed to cut the rock wall. During this process, the protective plate 3, which is set on the upper part of the motor mounting frame 4 and located directly above the cutting spray mechanism 2, can effectively prevent the coal and rock fragments driven by the rotation of the cutting drum 1 from directly impacting the spray block 11 and the spray nozzle 12.

[0041] Based on the actual working parameters during the cutting operation, including water pressure, water flow velocity, and changes in the location of the cutting area, the operator drives the spray block 11 to rotate relative to the motor mounting bracket 4 around the axis of the fixing bolt 16 by using the angle adjustment bolt set on the spray block 11 to precisely adjust the spray angle of the spray nozzle 12. Specifically, when the spray angle needs to be adjusted upwards, the operator tightens the lower angle adjusting bolt 18 so that its end pushes against the motor mounting bracket 4 to generate a reaction force. At the same time, the upper adjusting bolt 17 is loosened appropriately to release the constraint. At this time, the spray block 11 swings upwards around the axis of the fixing bolt 16. The rod of the fixing bolt 16 slides adaptively along the length direction in the slotted screw hole 13 to compensate for displacement deviation. At the same time, the spherical pad 15 rotates adaptively in the spherical pad hole 14 so that the head end face of the fixing bolt 16 always keeps parallel contact with the end face of the spherical pad 15. Conversely, when the angle needs to be adjusted downwards, the upper adjusting bolt 17 is tightened and the lower angle adjusting bolt 18 is loosened so that the spray block 11 swings downwards to the required position. After the adjustment is completed, the two angle adjusting bolts and the fixing bolt 16 form a stable three-point support structure to resist vibration and impact.

[0042] After the angle adjustment is completed, external water supply enters the water-cooling channel inside the cutting motor 5 from the motor inlet 8. When the water flows through the motor housing, it fully absorbs the heat generated by the motor operation to ensure the stability of the motor's continuous operation. The heated cooling water flows out from the motor outlet 9, is introduced into the spray mechanism inlet 10 through the pipeline, and enters the flow channel extending along the length direction inside the spray block 11. This flow channel is connected to the inlets of multiple spray nozzles 12 that are spaced apart along the length direction of the spray block 11 through internal branch holes, so that the high-pressure water flow is evenly distributed to each spray nozzle 12 along the length direction. Finally, the water is sprayed out from the spray nozzles 12 installed in the mounting holes on the front end face of the spray block 11 at the adjusted spray angle, forming a fan-shaped fog curtain covering the cutting area, which effectively sprays and suppresses the dust generated during the cutting process.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable spray angle cutting spray device for a continuous miner, characterized by, It includes a cutting arm (7), a cutting spray mechanism (2), a cutting motor (5), a gearbox (6), a cutting drum (1), and at least one motor mounting bracket (4); The motor mounting bracket (4) is connected to the cutting arm (7); the cutting motor (5) is disposed inside the motor mounting bracket (4); the gearbox (6) is connected to the output end of the cutting motor (5); the cutting roller (1) is connected to the output end of the gearbox (6); the cutting spray mechanism (2) is disposed on the outside of the motor mounting bracket (4); The cutting spray mechanism (2) includes a spray block (11) and a spray nozzle (12); the spray nozzle (12) is mounted on the spray block (11), the spray block (11) is rotatably connected to the motor mounting bracket (4), and the spray block (11) is provided with an angle adjustment bolt for driving the spray block (11) to rotate relative to the motor mounting bracket (4).

2. An adjustable angle cutting spray device for a continuous miner as set forth in claim 1, wherein, The spray block (11) is connected to the motor mounting bracket (4) by a fixing bolt (16). The spray block (11) is provided with a spherical pad hole (14) and a spherical pad (15) is provided in the spherical pad hole (14). The fixing bolt (16) passes through the spherical pad (15) and the spray block (11) in sequence and is connected to the motor mounting bracket (4).

3. The adjustable spray angle cutting spray device for a continuous mining machine according to claim 2, characterized in that, The spray block (11) is also provided with a slotted screw hole (13); the fixing bolt (16) passes through the slotted screw hole (13) and is connected to the motor mounting bracket (4).

4. The adjustable spray angle cutting spray device for a continuous mining machine according to claim 1, characterized in that, The cutting motor (5) is provided with a motor water inlet (8) and a motor water outlet (9); the spray block (11) is provided with a spray mechanism water inlet (10), and the motor water outlet (9) and the spray mechanism water inlet (10) are connected by a pipeline.

5. An adjustable spray angle cutting spray device for a continuous mining machine according to claim 1, characterized in that, The motor mounting bracket (4) is provided with a protective plate (3) on its upper part; the protective plate (3) is located above the cutting spray mechanism (2).

6. The adjustable spray angle cutting spray device for a continuous mining machine according to claim 1, characterized in that, The motor mounting bracket (4) includes a first motor mounting bracket and a second motor mounting bracket; the first motor mounting bracket and the second motor mounting bracket are symmetrically arranged on both sides of the gearbox (6), and each motor mounting bracket (4) is provided with a cutting motor (5), and the output ends of the two cutting motors (5) are connected to the input end of the gearbox (6).

7. An adjustable-angle cutting spray device for a continuous mining machine according to claim 6, characterized in that, The angle adjusting bolt includes an upper adjusting bolt (17) and a lower angle adjusting bolt (18); the upper adjusting bolt (17) passes through the spray block (11), and the end of the upper adjusting bolt (17) abuts against the first motor mounting bracket; the lower angle adjusting bolt (18) passes through the spray block (11), and the end of the lower angle adjusting bolt (18) abuts against the second motor mounting bracket.

8. An adjustable spray angle cutting spray device for a continuous mining machine according to claim 7, characterized in that, The spray block (11) is provided with two threaded holes; the upper adjusting bolt (17) and the lower angle adjusting bolt (18) are respectively installed in the two threaded holes, and the upper adjusting bolt (17) is located above the lower angle adjusting bolt (18).

9. An adjustable spray angle cutting spray device for a continuous mining machine according to claim 1, characterized in that, The spray block (11) is provided with a mounting hole, and the spray nozzle (12) is disposed in the mounting hole.

10. An adjustable-angle cutting spray method for continuous mining machines, characterized in that, The adjustable spray angle cutting spray device according to any one of claims 1 to 9 includes the following steps: Start the cutting motor (5), and the power output by the cutting motor (5) is transmitted to the cutting drum (1) through the gearbox (6), driving the cutting drum (1) to rotate and cut the rock wall; According to the working conditions during the cutting operation, the spray block (11) is driven to rotate relative to the motor mounting bracket (4) by operating the angle adjustment bolt, so as to adjust the spray angle of the spray nozzle (12); Cooling water is introduced into the spray nozzle (12) so that the cooling water is sprayed out at the adjusted spray angle to spray and suppress the dust generated during the cutting process.

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