Discharge angle adjustable type gangue blocking device

Abstract

The present application provides a kind of adjustable inclination of gangue arrangement of gangue, it is related to coal mine underground protective equipment technical field, including support frame, gangue board and adjusting mechanism one, the gangue board is pivotably installed on the support frame, the extension direction of the gangue board and the extension direction of the support frame are arranged at angle;The installation end of the adjusting mechanism one is connected with the support frame, the output end of the adjusting mechanism one is connected with the gangue board and can tow the gangue board close to or away from the support frame, to adjust the included angle between the gangue board and the support frame.The present application can flexibly adjust the inclination of gangue board relative to support frame, to adapt to different fall, different gangue range of gangue operation scene, improves the protection effect.

Description

Technical Field

[0001] This invention relates to the field of underground coal mine protection equipment technology, and in particular to a rock-blocking device with adjustable rock-discharge angle. Background Technology

[0002] During the production process of fully mechanized coal mining faces, the roof and coal wall are prone to breakage due to the interaction between the roof pressure and the hydraulic supports, generating a large number of small and medium-sized coal gangue. Coal gangue can easily fall through the gaps between adjacent hydraulic supports to the pedestrian side of the supports (especially during and immediately after the support is moved), posing a threat to the safety of workers. At the same time, it significantly deteriorates the working environment of the face, increases the amount of cleaning work, and affects production efficiency. In addition, scattered coal gangue can easily accumulate and get stuck in the gaps between hydraulic pipelines, valve groups, and sensors between hydraulic supports, leading to equipment damage, seal failure, and malfunction, increasing equipment wear and failure rate, and seriously affecting the continuous advancement of the working face and safe and efficient production.

[0003] In related technologies, simple rock-blocking plates or protective nets are usually installed at the gaps between supports. However, ordinary rock-blocking devices are mainly designed to deal with coal and gangue facing the side of the coal mining machine. Devices facing the gaps between supports are prone to deformation, damage or connection failure. Moreover, they are inconvenient to install and adjust, and their protective effect is limited. Especially under water spray conditions, coal and gangue materials are more likely to adhere and accumulate, further affecting the reliability of the protection device. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] To address this, embodiments of the present invention propose an adjustable rock-blocking device. This adjustable rock-blocking device can flexibly adjust the tilt angle of the rock-blocking plate relative to the support frame to adapt to different rock-blocking operation scenarios with different drop and different rock-falling ranges, thereby improving the protection effect.

[0006] According to an embodiment of the present invention, an adjustable-angle rock-blocking device includes a support frame, a rock-blocking plate, and an adjustment mechanism. The rock-blocking plate is pivotally mounted on the support frame, and the extending direction of the rock-blocking plate is arranged at an angle to the extending direction of the support frame. The mounting end of the adjustment mechanism is connected to the support frame, and the output end of the adjustment mechanism is connected to the rock-blocking plate and is capable of pulling the rock-blocking plate closer to or away from the support frame to adjust the included angle between the rock-blocking plate and the support frame.

[0007] According to an embodiment of the present invention, the adjustable rock-blocking device can flexibly adjust the tilt angle of the rock-blocking plate relative to the support frame based on the rock-blocking conditions, rock falling speed, and accumulation range at the mine site. This allows the rock-blocking plate to adjust to the impact direction of the falling rock, optimize the stress-bearing state of the rock, and adapt to different rock-blocking operation scenarios with different drop heights and rock falling ranges. This improves the device's versatility and rock-blocking coverage effect, thereby enhancing the rock-blocking protection coverage and adaptability. Therefore, compared to related technologies, the present invention can flexibly adjust the tilt angle of the rock-blocking plate relative to the support frame to adapt to different rock-blocking operation scenarios with different drop heights and rock falling ranges, thus improving the protection effect.

[0008] In some embodiments, the adjustment mechanism includes a first adjustment motor, an adjustment gear, and a driven gear. The first adjustment motor is mounted on the support frame and is connected to the adjustment gear in a transmission manner. The driven gear is rotatably mounted on the support frame and meshes with the adjustment gear in a transmission manner. The baffle plate is connected to the driven gear.

[0009] In some embodiments, the support frame is provided with a mounting through hole, and the rock-blocking device further includes a mounting bracket. The mounting bracket has a hinge shaft and is connected to the rock-blocking plate. At least a portion of the hinge shaft is rotatably engaged in the mounting through hole so that the mounting bracket can pivot relative to the support frame, thereby driving the rock-blocking plate to pivot relative to the support frame. The driven gear is sleeved on the hinge shaft.

[0010] In some embodiments, the rock-blocking device further includes an encoder and a control system. The encoder is connected to the first regulating motor and is used to collect information on at least one of the following parameters of the first regulating motor: the number of rotations, the rotation angle, and the rotation speed. The control system is electrically connected to both the first regulating motor and the encoder.

[0011] In some embodiments, the rock-blocking device further includes a self-locking device capable of locking the rock-blocking plate and the support frame when the rock-blocking plate is pivoted to any position relative to the support frame;

[0012] The self-locking device includes a brake disc and a brake element. The brake disc is sleeved on the output end of the motor shaft of the first adjusting motor. The brake element is connected to the support frame and arranged adjacent to the brake disc. The brake element can lock the brake disc when it is close to it or release the brake disc when it is far away from it. The outer circumferential surface of the brake disc is provided with wear-resistant brake pads.

[0013] In some embodiments, the rock-blocking device further includes an adaptive buffer mechanism, which includes a sleeve, an insert, and a buffer member. The sleeve is connected to the rock-blocking plate, at least a portion of the insert is slidably fitted within the sleeve, and one end of the insert facing away from the sleeve is connected to the support frame. The buffer member is sandwiched between the sleeve and the insert, and the buffer member is capable of pushing and pulling the sleeve to extend and retract along the extension direction of the insert, so that the sleeve reduces vibration along the extension direction of the insert.

[0014] In some embodiments, the adaptive buffer mechanism further includes an adjustment mechanism two, which includes an adjustment component and a sliding plate. The mounting end of the adjustment component is connected to the support frame, the sliding plate is slidably connected to the insertion tube, the two ends of the buffer are respectively connected to the sleeve and the sliding plate, and the output end of the adjustment component is connected to the sliding plate and is capable of pushing and pulling the sliding plate relative to the insertion tube along the extension direction of the insertion tube.

[0015] In some embodiments, the adjustment assembly includes a second adjustment motor and an adjustment screw. The second adjustment motor is mounted on the support frame and is throttle-connected to the adjustment screw. At least a portion of the adjustment screw is fitted inside the insertion tube and rotatably connected to the insertion tube. One end of the adjustment screw opposite to the second adjustment motor is connected to the sliding plate so that the sliding plate can slide relative to the insertion tube along the extension direction of the insertion tube.

[0016] In some embodiments, the sliding plate is provided with a bearing on the side opposite to the buffer member, and the end of the adjusting screw opposite to the second adjusting motor is connected to the bearing.

[0017] In some embodiments, the waste rock blocking device further includes a first universal joint, the mounting end of the first universal joint being connected to the mounting frame, and the movable end of the first universal joint being connected to the waste rock blocking plate. A dustproof sealing gasket is provided at the connection between the first universal hinge and the baffle plate.

[0018] In some embodiments, the rock-blocking device further includes a second universal joint, the mounting end of which is connected to the rock-blocking plate, and the movable end of which is connected to the sleeve.

[0019] In some embodiments, the gangue-blocking device further includes a water tank, a valve body, a valve disc, and a spray assembly. The water tank is mounted on the support frame. The inlet of the valve body communicates with the water tank. The valve body is connected to the sliding plate. At least a portion of the valve disc is slidably fitted within the valve body. One end of the valve disc away from the valve body is connected to the sleeve. The valve disc has a first position and a second position. When the sleeve slides relative to the insertion tube, the valve disc can switch between the first position and the second position to open or block the outlet of the valve body. The outlet of the valve body communicates with the spray assembly. The spray assembly is connected to the gangue-blocking plate and is used to spray water to cool the coal gangue.

[0020] In some embodiments, the waste rock blocking device further includes a top plate disposed on top of the support frame, and the water tank is connected to the top plate; The outer wall surface of the top plate is provided with a wear-resistant and corrosion-resistant coating. The top plate has a protective flange at its edge.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an adjustable rock-blocking device according to an embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 3 This is a cross-sectional structural schematic diagram of an adjustable rock-blocking device according to an embodiment of the present invention.

[0025] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0026] Figure label: 1. Support frame; 101. Mounting through hole; 2. Baffle plate; 3. Adjustment mechanism one; 301. First adjustment motor; 302. Adjustment gear; 4. Adaptive buffer mechanism; 401. Sleeve; 402. Buffer component; 403. Insert tube; 4031. Guide groove; 404. Adjustment mechanism two; 4041. Adjustment component; 40411. Second adjustment motor; 40412. Adjustment screw; 4042. Sliding plate; 5. Valve body; 6. Valve disc; 7. Water tank; 8. Spray assembly; 9. Mounting frame; 901. Hinge shaft; 9011. Driven gear; 10. Encoder; 11. Self-locking device; 1101. Braked disc; 1102. Braking component; 12. First universal joint; 13. Second universal joint; 14. Bearing; 15. Top plate. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1 and Figure 2 As shown, an adjustable-angle waste rock blocking device according to an embodiment of the present invention includes a support frame 1, a waste rock blocking plate 2, and an adjustment mechanism 3. The waste rock blocking plate 2 is pivotally mounted on the support frame 1, and the extension direction of the waste rock blocking plate 2 is arranged at an angle to the extension direction of the support frame 1. The mounting end of the adjustment mechanism 3 is connected to the support frame 1, and the output end of the adjustment mechanism 3 is connected to the waste rock blocking plate 2 and can pull the waste rock blocking plate 2 closer to or away from the support frame 1 in order to adjust the included angle between the waste rock blocking plate 2 and the support frame 1.

[0029] According to an embodiment of the present invention, the adjustable rock-blocking device can flexibly adjust the tilt angle of the rock-blocking plate 2 relative to the support frame 1 based on the rock-blocking conditions, rock falling speed, and accumulation range at the mine site. This allows the rock-blocking plate 2 to adjust to the impact direction of the falling rock, optimize the stress-bearing state of the rock, and adapt to different rock-blocking operation scenarios with different drop heights and rock falling ranges. This improves the device's versatility and rock-blocking coverage effect, thereby enhancing the rock-blocking protection coverage and adaptability. Therefore, compared to related technologies, the present invention can flexibly adjust the tilt angle of the rock-blocking plate 2 relative to the support frame 1 to adapt to different rock-blocking operation scenarios with different drop heights and rock falling ranges, thus improving the protection effect.

[0030] like Figure 2 As shown, in some embodiments, the adjustment mechanism 3 includes a first adjustment motor 301, an adjustment gear 302, and a driven gear 303. The first adjustment motor 301 is mounted on the support frame 1 and is connected to the adjustment gear 302 for transmission. The driven gear 303 is rotatably mounted on the support frame 1 and meshes with the adjustment gear 302 for transmission. The baffle plate 2 is connected to the driven gear 303.

[0031] Specifically, the adjusting gear 302 is connected to the output end of the motor shaft of the first adjusting motor 301.

[0032] In addition, the adjustment mechanism 3 can be replaced with an electric lead screw, hydraulic telescopic mechanism, gear and rack drive structure, etc., in order to achieve remote and precise angle adjustment, rapid large-angle adjustment, and long-term self-locking stable operation.

[0033] In some specific embodiments, both the adjusting gear 302 and the driven gear 303 are helical gears. Compared with spur gear transmission, they have a higher degree of meshing overlap and smoother transmission, which can effectively reduce the impact noise and gear wear during the adjustment process and improve the smoothness of the tilt angle fine adjustment.

[0034] In some specific embodiments, the waste rock blocking device also includes a dustproof protective shell (not shown in the figure). The dustproof protective shell is connected to the support frame 1 and defines a receiving cavity between the two. The adjusting gear 302 and the driven gear 303 are located in the receiving cavity. In other words, a dustproof protective shell can be added at the gear meshing point to prevent underground coal dust and waste rock fragments from entering the meshing gap, preventing malfunctions such as gear jamming, wear, and transmission jamming, and continuously ensuring the gear transmission accuracy and service life.

[0035] like Figure 1 and Figure 2 As shown, in some embodiments, the support frame 1 is provided with a mounting through hole 101, and the rock-blocking device also includes a mounting frame 9. The mounting frame 9 has a hinge shaft 901 and is connected to the rock-blocking plate 2. At least a portion of the hinge shaft 901 is rotatably engaged in the mounting through hole 101 so that the mounting frame 9 can pivot relative to the support frame 1, thereby driving the rock-blocking plate 2 to pivot relative to the support frame 1. The driven gear 303 is sleeved on the hinge shaft 901.

[0036] It is understandable that by setting a rotating engagement structure between the hinge shaft 901 and the mounting through hole 101 between the mounting frame 9 and the support frame 1, a stable rotation reference is provided for the tilt adjustment of the baffle plate 2. In conjunction with the gear transmission structure in which the first adjusting motor 301 drives the adjusting gear 302 and the adjusting gear 302 meshes with and drives the driven gear 303 to rotate synchronously, the rotational power of the motor is accurately converted into the rotational torque of the hinge shaft 901, thereby driving the baffle plate 2 to smoothly complete the tilt adjustment operation.

[0037] In some specific embodiments, a wear-resistant bushing (not shown in the figure) is provided between the hinge shaft 901 and the mounting through hole 101, so as to reduce the rotational friction resistance by the wear-resistant bushing, reduce the structural wear during long-term rotational operation, and ensure that the tilt angle adjustment is accurate and smooth over a long period of time.

[0038] like Figure 2As shown, in some embodiments, the rock-blocking device further includes an encoder 10 and a control system (not shown in the figure). The encoder 10 is connected to the first regulating motor 301 and is used to collect at least one parameter information of the first regulating motor 301, including the number of rotations, rotation angle, and rotation speed. The control system is electrically connected to both the first regulating motor 301 and the encoder 10. The control system can accurately calculate the real-time tilt angle value of the rock-blocking plate 2 based on the real-time data fed back by the encoder 10, and intelligently control the start, stop, forward and reverse rotation, and rotation stroke of the first regulating motor 301 by comparing it with the preset standard tilt angle parameter, so as to realize the automated, precise, and quantitative adjustment of the tilt angle of the rock-blocking plate 2.

[0039] It is understandable that by linking the encoder 10 with the first regulating motor 301, precise operating data such as the number of rotations, rotation angle, and speed of the first regulating motor 301 can be collected in real time, and the mechanical rotation signal can be converted into a precise electrical signal and fed back to the control system, forming a closed-loop precise control mechanism.

[0040] Specifically, the encoder 10 can be a high-precision absolute encoder 10 to replace the ordinary incremental encoder 10, which can realize the angle data memory after power failure, and there is no need to recalibrate the zero point after the device restarts, further improving the convenience of adjustment and positioning accuracy.

[0041] In some specific embodiments, an intelligent tilt angle threshold storage module can be added inside the control system to preset multiple sets of optimal tilt angle parameters for different waste rock disposal conditions, so as to realize one-click automatic angle adjustment when switching operating conditions and improve the device's adaptability efficiency.

[0042] In some specific embodiments, the control system can also be equipped with a real-time tilt angle display module to visualize the tilt angle value of the rock baffle 2 in real time, so that staff can observe and verify the equipment operation status in real time.

[0043] like Figure 2 As shown, in some embodiments, the rock-blocking device further includes a self-locking device 11, which can lock the rock-blocking plate 2 and the support frame 1 when the rock-blocking plate 2 is pivoted to any position relative to the support frame 1.

[0044] The self-locking device 11 includes a brake disc 1101 and a brake element 1102. The brake disc 1101 is sleeved on the motor shaft output end of the first adjusting motor 301. The brake element 1102 is connected to the support frame 1 and is arranged adjacent to the brake disc 1101. The brake element 1102 can be close to lock or away from release the brake disc 1101.

[0045] The outer circumferential surface of the brake disc 1101 is provided with a wear-resistant brake pad, that is, a wear-resistant brake pad is attached to the outer circumference of the brake disc 1101 to increase the clamping friction of the brake caliper, improve the braking locking force, and at the same time avoid the hard clamping of metal to wear the brake disc body and extend the service life of the self-locking structure.

[0046] Specifically, the brake component 1102 can be an electric brake caliper, which is electrically connected to the control system and mounted on the support frame 1 via a bracket. Alternatively, the brake component 1102 can use an electromagnetic self-locking structure instead of the electric brake caliper structure, offering faster response, no mechanical clamping wear, and suitability for high-frequency start-stop adjustment conditions; or, it can use a worm gear reverse self-locking transmission structure, relying on the mechanical self-locking characteristics of the transmission pair itself to achieve anti-reverse locking without additional braking components, resulting in a simpler and more compact structure; or, it can use a pin-type electromagnetic self-locking structure, where an electromagnetically driven pin is inserted into a positioning hole to achieve mechanical locking, providing stronger resistance to impact loads and suitability for ultra-large rock impact conditions; or, it can use a friction plate type hydraulic braking structure, offering continuously adjustable braking force, smooth braking without impact, and suitability for high-precision, high-stability tilt positioning scenarios.

[0047] It is understandable that by setting an electric self-locking structure at the output end of the motor shaft of the first adjusting motor 301, which is equipped with the brake disc 1101 and the electric brake caliper, and by unified linkage control by the control system, after the device completes the tilt angle adjustment operation, the control system can automatically control the electric brake caliper to move, clamp and lock the brake disc 1101, and form a forced braking limit on the motor shaft of the first adjusting motor 301.

[0048] At the same time, by utilizing the principle of braking with force applied around the entire circumference of the brake disc, the rotational freedom of the adjusting gear 302 can be completely locked, effectively offsetting the torsional impact force transmitted in the reverse direction to the gear and motor shaft when the gangue impacts the gangue baffle 2, and preventing the motor shaft from experiencing slight rotation and tilting angle rebound deviation due to reverse load.

[0049] In some specific embodiments, the electric brake caliper may be equipped with a displacement sensor (not shown in the figure) to monitor the opening and closing stroke and locking status of the brake caliper in real time, realize the feedback of the locking position signal, avoid faults such as false clamping and non-locking, and ensure that the self-locking action is accurate and effective.

[0050] In some specific embodiments, the rock-blocking device can also be equipped with a braking delay linkage program (not shown in the figure) to match the timing of the motor angle adjustment action, so as to achieve delayed locking after the motor stops and early unlocking before the motor starts, to prevent hard braking impact from damaging the transmission structure and improve the safety of equipment operation.

[0051] like Figures 1 to 4As shown, in some embodiments, the rock-blocking device further includes an adaptive buffer mechanism 4, which includes a sleeve 401, an insert 403, and a buffer member 402. The sleeve 401 is connected to the rock-blocking plate 2, and at least a portion of the insert 403 is slidably fitted inside the sleeve 401. One end of the insert 403 away from the sleeve 401 is connected to the support frame 1. The buffer member 402 is sandwiched between the sleeve 401 and the insert 403. The buffer member 402 can push and pull the sleeve 401 to extend and retract along the extension direction of the insert 403, so that the sleeve 401 can reduce vibration along the extension direction of the insert 403.

[0052] Specifically, one end of the sleeve 401 is connected to the baffle plate 2, and the other end is movably sleeved on the insertion tube 403. The sleeve 401 and the insertion tube 403 can be arranged coaxially. The buffer 402 is used to adapt to the driving force of the baffle plate 2 on the sleeve 401. The buffer 402 can be a compression spring. When the rock impacts the baffle plate 2, the sleeve 401 displaces with the force and squeezes the buffer 402 to elastically deform, adaptively absorbing the impact load and avoiding rigid deformation and damage to the baffle plate 2, thereby improving the service life and protection stability of the device. The buffer 402 can be replaced with a composite structure of hydraulic buffer, rubber buffer column, and disc spring assembly, which are suitable for different working conditions such as high-intensity impact, low-noise small-amplitude impact, and complex alternating impact.

[0053] It is understandable that when the impact force is generated by the rock impact on the rock baffle 2, the sleeve 401 slides relative to the insertion tube 403 as the rock baffle 2 is subjected to force. In conjunction with the elastic deformation of the buffer 402, it adaptively absorbs and offsets the impact load, thereby reducing the impact vibration and impact load, and preventing the rock baffle 2 and the connecting parts from deforming, cracking, or being damaged due to long-term impact.

[0054] like Figure 3 and Figure 4 As shown, in some embodiments, the adaptive buffer mechanism 4 further includes an adjustment mechanism 404. The adjustment mechanism 404 includes an adjustment component 4041 and a sliding plate 4042. The mounting end of the adjustment component 4041 is connected to the support frame 1. The sliding plate 4042 is slidably connected to the insertion tube 403. The two ends of the buffer member 402 are respectively connected to the sleeve 401 and the sliding plate 4042. The output end of the adjustment component 4041 is connected to the sliding plate 4042 and can push and pull the sliding plate 4042 relative to the insertion tube 403 to slide along the extension direction of the insertion tube 403. That is, the adjustment component 4041 drives the sliding plate 4042 to slide relative to the insertion tube 403, thereby driving the buffer member 402 to move, and thus driving the sleeve 401 to move relative to the insertion tube 403.

[0055] Understandably, the pre-tightening state of the buffer component 402 can be adjusted by sliding the adjustment mechanism 404 to adapt to different rock impact conditions, thereby achieving controllable and adjustable buffering force, improving the device's impact resistance, structural stability and service life, and continuously ensuring the integrity and effectiveness of the rock-blocking protection structure.

[0056] Specifically, by setting the adjustment mechanism 404 as a combination sliding structure of adjustment component 4041 and sliding plate 4042, the adjustment component 4041 drives the sliding plate 4042 to slide precisely along the insertion tube 403, which can flexibly change the assembly position of the sliding plate 4042 on the insertion tube 403, thereby adjusting the pre-compression amount and initial support position of the buffer component 402, realizing the adjustable setting of the initial elastic force and buffer stroke of the buffer, and matching different intensity of waste rock disposal conditions such as light waste rock falling and heavy impact.

[0057] Specifically, the buffer 402 can be located inside the sleeve 401, with one end of the buffer 402 connected to the inner wall of the sleeve 401 and the other end connected to the sliding plate 4042. The insertion tube 403 is provided with a guide groove 4031, which extends along the extension direction of the insertion tube 403, and the sliding plate 4042 is slidably engaged with the guide groove 4031.

[0058] In some specific embodiments, the guide groove 4031 can be a symmetrical double guide groove structure.

[0059] In some specific embodiments, the inner wall of the guide groove 4031 may be provided with a wear-resistant and low-friction liner (not shown in the figure), that is, the inner wall of the guide groove 4031 is inlaid with a wear-resistant and low-friction liner to reduce the frictional resistance of the sliding plate 4042 reciprocating sliding, reduce the wear of the groove body, and maintain the guiding accuracy and sliding smoothness for a long time.

[0060] In some specific embodiments, limit blocks (not shown in the figure) may also be provided at both ends of the guide groove 4031 to limit the maximum sliding stroke of the sliding plate 4042, prevent excessive sliding from causing excessive compression of the buffer 402 and structural collision damage, and effectively protect the internal buffer structure.

[0061] In some specific embodiments, a scale (not shown in the figure) may be provided on the outer wall of the cannula 403 to cooperate with the sliding plate 4042 to achieve quantitative and precise adjustment, so that the staff can accurately control the pre-tightening degree of the buffer 402 and achieve standardized parameter adjustment.

[0062] In some specific embodiments, a wear-resistant and low-friction bushing (not shown in the figure) may be provided between the sliding plate 4042 and the insertion tube 403. That is, the wear-resistant and low-friction bushing is embedded in the sliding mating surface of the sliding plate 4042 and the insertion tube 403 to reduce the reciprocating sliding resistance, avoid jamming and displacement, and improve the smoothness of sliding adjustment and positioning accuracy.

[0063] In addition, various alternative structures can be used to replace this sliding plate type adjustment mechanism. For example, a slider guide rail type adjustment structure can be used, which has higher guiding accuracy and stronger resistance to lateral forces, and can resist lateral deviation caused by impact; or a lifting platform fine-tuning type adjustment structure can be used, which has a smaller adjustment stroke and higher accuracy, and is suitable for fine buffer parameter adjustment scenarios; or a split clamp sliding adjustment structure can be used, which is convenient for disassembly and maintenance, and facilitates the later inspection and replacement of the buffer component 402; or an electric screw integrated adjustment structure can be used to realize automated, remote and precise adjustment, and further improve the intelligent operation level of the device.

[0064] like Figure 3 and Figure 4 As shown, in some embodiments, the adjustment assembly 4041 includes a second adjustment motor 40411 and an adjustment screw 40412. The second adjustment motor 40411 is mounted on the support frame 1 and is throttlely connected to the adjustment screw 40412. At least a portion of the adjustment screw 40412 is fitted inside the insertion tube 403 and rotatably connected to the insertion tube 403. One end of the adjustment screw 40412 away from the second adjustment motor 40411 is connected to a sliding plate 4042 so that the sliding plate 4042 can slide relative to the insertion tube 403 along the extension direction of the insertion tube 403.

[0065] like Figure 3 and Figure 4 As shown, in some embodiments, a bearing 14 is provided on the side of the sliding plate 4042 away from the buffer member 402 (wherein, the outer ring of the bearing 14 is connected to the sliding plate 4042), and the end of the adjusting screw 40412 away from the second adjusting motor 40411 is connected to the bearing 14.

[0066] Specifically, the adjusting screw 40412 is movably inserted through the end of the insertion tube 403 away from the sleeve 401. One end of the adjusting screw 40412 is connected to the output end of the motor shaft of the second adjusting motor 40411, and the other end is connected to the inner ring of the bearing 14. The adjusting screw 40412 can be a ball screw, which has higher transmission efficiency and smaller backlash, further improving the fine-tuning accuracy and smoothness of operation, and achieving micron-level precise parameter adjustment. The bearing 14 can be a high-precision thrust bearing 14, and dustproof sealing covers can be added to both sides of the bearing 14.

[0067] It is understandable that the second adjusting motor 40411 drives the adjusting screw 40412 as the power source for the sliding plate 4042, and a bearing 14 is set between the adjusting screw 40412 and the sliding plate 4042 for rotational connection to form a precise adjustment structure. The second adjusting motor 40411 outputs torque to drive the adjusting screw 40412 to rotate, and uses the screw screw transmission principle to convert the rotational motion into linear driving force, thereby pushing and pulling the sliding plate 4042 to slide along the axial direction of the insertion tube 403, realizing the automatic fine adjustment of the preload and buffer stroke of the buffer 402.

[0068] Meanwhile, the relative rotation of the inner and outer rings of bearing 14 ensures that during the continuous rotation of the adjusting screw 40412, only the inner ring of bearing 14 rotates synchronously, while the outer ring of bearing 14 and the connected sliding plate 4042 do not generate rotational torque. This releases rotational friction and effectively prevents the sliding plate 4042 from rotating, twisting, shifting, jamming, or deviating with the adjusting screw 40412, thus ensuring that the sliding plate 4042 always maintains a straight and stable sliding state.

[0069] In some specific embodiments, the adjustment component 4041 may also be provided with a self-locking limiting structure (not shown in the figure). The self-locking limiting structure can lock the sliding plate 4042 and the insertion tube 403 when the sliding plate 4042 moves to any position relative to the insertion tube 403, so as to prevent the sliding plate 4042 from shifting or changing parameters due to operation vibration, and continuously ensure the stability of the buffer and spray linkage parameters.

[0070] like Figure 3 As shown, in some embodiments, the waste rock blocking device further includes a first universal joint 12, the mounting end of the first universal joint 12 being connected to the mounting frame 9, and the movable end of the first universal joint 12 being connected to the waste rock blocking plate 2.

[0071] The connection between the first universal joint 12 and the gangue baffle 2 is provided with a dustproof sealing gasket (not shown in the figure) to isolate underground coal dust, water vapor and fine gangue debris, prevent internal corrosion, jamming and poor rotation of the joint, and ensure long-term flexible and adaptive swing of the universal joint.

[0072] Understandably, by adding a first universal joint 12 between the mounting frame 9 and the rock-blocking plate 2 to replace the traditional single-axis hinge structure, the rock-blocking plate 2 not only has the conventional tilt angle rotation freedom, but also has a small amount of multi-dimensional adaptive swing and deflection compensation capability. Because during the underground rock disposal operation, the impact direction of falling rock is not a fixed single angle, there are irregular lateral and oblique impact forces. The universal joint structure can use its own universal rotation characteristics to make the rock-blocking plate 2 produce a small amount of adaptive angle offset when subjected to irregular impacts, dispersing the single-point concentrated impact stress. Therefore, it can avoid the problems of traditional single-axis hinge structure that can only rotate in one direction, jamming under lateral force, and severe stress concentration.

[0073] In some specific embodiments, a wear-resistant grease storage structure (not shown in the figure) may also be provided at the connection between the first universal joint 12 and the baffle plate 2. In other words, a wear-resistant grease storage structure can be built into the universal joint friction pair to achieve long-term self-lubrication effect, reduce joint rotational wear, and extend the service life of the joint structure.

[0074] In some specific embodiments, the first universal joint 12 can be a universal joint structure with slight damping, which can retain the adaptive offset compensation capability and avoid frequent shaking of the baffle plate 2 due to slight impact, thereby improving the stability of operation.

[0075] In addition, the first universal joint 12 can adopt a variety of alternative structures, such as a ball-head universal joint structure, which has a larger rotation angle range and stronger multi-dimensional compensation capability, and is suitable for extremely irregular rockfall impact conditions; or, an elastic composite joint structure, which integrates buffer elastic function, has both universal compensation and small shock absorption effect, and further weakens impact vibration; or, a cross-shaft universal joint structure, which has higher load-bearing strength and stronger impact resistance, and is suitable for large-tonnage, high-impact rockfall operation scenarios; or, a flexible joint connection structure, which has micro-deformation compensation capability, can effectively eliminate assembly stress caused by installation coaxiality deviation, and reduce the risk of structural fatigue damage.

[0076] like Figure 3 As shown, in some embodiments, the rock-blocking device further includes a second universal joint 13, the mounting end of which is connected to the rock-blocking plate 2, and the movable end of which is connected to the sleeve 401.

[0077] Understandably, by adding a second universal joint 13 at the connection point between the casing 401 and the retaining plate 2, forming a dual-point universal flexible connection structure with the first universal joint 12 at the front end, during downhole waste disposal operations, the waste rock is subjected to multi-dimensional irregular impact loads such as positive, oblique, and lateral. When the retaining plate 2 is subjected to multi-directional impacts and causes slight displacement and torsion, the second universal joint 13 can work with the first universal joint 12 to synchronously achieve multi-dimensional adaptive deflection and displacement compensation, so that the retaining plate 2, casing 401, and insertion pipe 403 always maintain a dynamic fit and fit state. This can release the torsional stress and shear stress at the connection between the casing 401 and the retaining plate 2, and prevent the rigid connection structure from experiencing problems such as connection tearing, weld cracking, and local deformation due to multi-directional impacts.

[0078] In some specific embodiments, the second universal joint 13 can be a high-strength sealed ball joint structure, which has the characteristics of dustproof, waterproof and anti-gangue debris intrusion, adapting to the harsh working environment of damp and dusty underground, and preventing internal jamming failure of the joint.

[0079] In some specific embodiments, the interior of the second universal joint 13 may also be provided with an elastic buffer pad layer (not shown in the figure), which can realize universal deflection compensation while also having a small shock absorption function, further weakening the transmission of impact vibration.

[0080] In some specific embodiments, the second universal joint 13 may adopt an integrated forged universal joint structure to improve the overall strength of the connection structure and prevent the joint from deforming and being damaged under heavy load impact.

[0081] like Figures 1 to 4 As shown, in some embodiments, the gangue-blocking device further includes a water tank 7, a valve body 5, a valve disc 6, and a spray assembly 8. The water tank 7 is mounted on a support frame 1. The inlet of the valve body 5 is connected to the water tank 7, and the valve body 5 is connected to a sliding plate 4042. At least a portion of the valve disc 6 is slidably fitted inside the valve body 5. One end of the valve disc 6 away from the valve body 5 is connected to a sleeve 401. The valve disc 6 has a first position and a second position. When the sleeve 401 slides relative to the insertion tube 403, the valve disc 6 can switch between the first position and the second position to open or block the outlet of the valve body 5. The outlet of the valve body 5 is connected to the spray assembly 8, and the spray assembly 8 is connected to the gangue-blocking plate 2 and is used to spray water to cool the coal gangue.

[0082] Specifically, at least a portion of the sliding plate 4042 is located outside the insertion tube 403 and connected to the valve body 5. In this case, the valve body 5 is located outside the insertion tube 403, while the end of the valve disc 6 facing away from the valve body 5 is located outside the sleeve 401. Therefore, the valve structure constructed by the valve body 5 and the valve disc 6 is located outside the insertion tube 403 and the sleeve 401, which is beneficial for later disassembly and maintenance. The linkage structure between the valve body 5 and the valve disc 6 can be replaced with a piston-type, a flip-type, or a magnetic-type structure, successively improving sealing and leak prevention, opening and closing response speed, and low-wear, maintenance-free performance. The spray assembly 8 can be installed at the bottom of the baffle plate 2. The spray assembly 8 can be a ring-shaped spray network, an atomizing spray assembly 8, or a directional high-pressure spray assembly 8, achieving functions such as all-area cooling without dead angles, dual-effect cooling and dust suppression, and deep cooling of large piles of gangue, further expanding the adaptability range of the device's operating conditions.

[0083] Understandably, the mechanical displacement of the baffle plate 2, which is cushioned by the impact, drives the valve disc 6 to move, thereby automatically opening and closing the valve body 5. This achieves the linkage operation logic of automatic spraying during gangue impact and automatic stopping of spraying after the impact disappears. No manual operation is required. It can spray and cool the high-temperature gangue pile in a timely manner during the process of gangue falling and accumulating, quickly eliminate the high temperature hazard of gangue, and prevent high-temperature gangue from inducing underground safety accidents. It also improves the high-temperature working environment underground and solves the defects of traditional gangue blocking devices that only have a blocking function, no cooling protection, and single function. It realizes the integration of gangue blocking protection and cooling and dust removal safety protection, and further improves the overall protection effect and operational safety of underground gangue disposal operations.

[0084] Meanwhile, the valve body 5 is directly integrated and fixed on the sliding plate 4042, so that the valve body 5 can maintain synchronous linkage with the sliding plate 4042 and the buffer 402, ensuring that the relative motion reference of the valve body 5 and the valve disc 6 always follows the synchronous change of the buffer adjustment reference, preventing matching failure problems such as valve disc 6 opening and closing stroke deviation, spray linkage timing misalignment, and water circuit opening and closing not tight.

[0085] like Figures 1 to 3 As shown, in some embodiments, the waste rock blocking device further includes a top plate 15, which is disposed on the top of the support frame 1, and the water tank 7 is connected to the top plate 15 (not shown in the figure).

[0086] Understandably, by fixing the top plate 15 structure on the top of the support frame 1, the support frame 1 forms a closed top bearing platform, providing a flat, stable, and large-area installation support foundation for the water tank 7. This replaces the traditional assembly form of the support frame 1 with a hollow top and point support of rods, effectively ensuring the flatness and structural stability of the water tank 7 installation, and avoiding problems such as tilting, displacement, and suspended stress caused by long-term water storage load and equipment vibration.

[0087] In some specific embodiments, the outer wall surface of the top plate 15 is provided with a wear-resistant and corrosion-resistant coating (not shown in the figure). In other words, the surface of the top plate 15 is covered with a wear-resistant and corrosion-resistant protective layer to adapt to the humid, dusty, and corrosive working environment underground and improve the service life of the top plate 15.

[0088] In some specific embodiments, the edge of the top plate 15 is provided with a protective flange (not shown in the figure) to achieve the effect of enclosure protection, further preventing gravel and debris from sliding and accumulating, and protecting the lower mechanism for clean operation.

[0089] In some specific embodiments, the top plate 15 may be provided with positioning mounting holes and limiting slots (not shown in the figure). The water tank 7 is fitted into the limiting slots. The anti-slag device also includes fasteners. One end of the fastener passes through the water tank 7 and connects to the positioning mounting holes to realize the fixed-point installation of the water tank 7, prevent the water tank 7 from sliding and shifting, and improve the assembly accuracy.

[0090] In addition, various alternative structures can be used to replace the integral top plate structure shown in the figure. For example, a hollowed-out reinforcing rib top plate structure can be used to reduce the overall weight and reduce the overall load of the support frame 1 while ensuring the load-bearing strength; or, a split splicing top plate structure can be used to make disassembly and assembly convenient, maintenance convenient, and facilitate the inspection and repair of top components.

[0091] Therefore, compared with related technologies, the present invention has the following technical advantages: 1) The present invention can flexibly adjust the tilt angle of the baffle plate 2 relative to the support frame 1 according to the working conditions of the underground waste rock removal, the falling speed of the waste rock and the accumulation range through the adjustment mechanism 3. This allows the baffle plate 2 to adjust to the impact direction of the falling waste rock, optimize the stress state of the waste rock, and adapt to waste rock removal operation scenarios with different drop and different falling range. This improves the versatility of the device and the baffle plate coverage effect, thereby improving the waste rock removal protection coverage and adaptability. 2) When the impact of the gangue against the gangue baffle 2 generates impact force, the sleeve 401 slides relative to the insertion tube 403 as the gangue baffle 2 is subjected to force. In conjunction with the elastic deformation of the buffer 402, it adaptively absorbs and offsets the impact load, thereby reducing the impact vibration and impact load. This prevents the gangue baffle 2 and the connecting parts from deforming, cracking, or being damaged due to long-term impact. At the same time, the pre-tightening state of the buffer 402 can be adjusted by the sliding adjustment mechanism 404 to adapt to gangue impact conditions of different intensities. This makes the buffer force controllable and adjustable, improving the impact resistance, structural stability and service life of the device, and continuously ensuring the integrity and effectiveness of the gangue protection structure. 3) This invention is based on a valve body 5 mounted on an adjusting mechanism 404 and sliding along with the adjusting mechanism 404. A valve disc 6 is slidably connected to the valve body 5 to open or close the valve body 5. The valve disc 6 is connected to a sleeve 401 and moves with the sleeve 401, so that it can be driven by the sleeve 401 to open or close the valve body 5. The mechanical displacement of the baffle plate 2, which is cushioned by the impact, drives the valve disc 6 to move, thereby realizing the automatic opening and closing of the valve body 5. This achieves automatic spraying during gangue impact and automatic stopping of spraying after the impact disappears. The integrated operation logic eliminates the need for individual manual control. It can spray and cool down the high-temperature gangue pile in a timely manner during the process of gangue falling and accumulating, quickly eliminating the high temperature hazard of gangue and preventing underground safety accidents caused by high-temperature gangue. At the same time, it improves the high-temperature working environment underground and solves the defects of traditional gangue blocking devices that only have a blocking function and no cooling protection, and have a single function. It realizes the integration of gangue blocking protection and cooling and dust removal safety protection, and further improves the overall protection effect and operational safety of underground gangue removal operations.

[0092] In other words, this invention is applicable to complex underground waste rock disposal conditions and has integrated protection functions including adjustable tilt angle, adaptive buffering, and impact-linked spray cooling.

[0093] The working process of this adjustable-angle waste rock removal device will now be explained in detail, based on its specific structure: During operation, staff can adjust the angle between the blocking plate 2 and the extension direction of the support frame 1 by adjusting the adjustment mechanism 3 on the support frame 1 according to the on-site waste disposal conditions, waste rock falling speed and accumulation range, so as to adapt to the waste rock protection requirements of different waste disposal scenarios and improve the adaptability of the device to operating conditions. During the waste rock removal operation, the falling waste rock impacts and squeezes the baffle plate 2, causing the baffle plate 2 to be subjected to impact force and generate driving force. At this time, the adaptive buffer mechanism 4 starts adaptive buffer operation. The sleeve 401 moves with the baffle plate 2 under the force and slides relative to the insertion tube 403. At the same time, the buffer 402 is deformed under the force of the adjustment mechanism 404 and the sleeve 401, adaptively offsetting and buffering the impact force on the baffle plate 2, effectively reducing the vibration and impact load caused by the waste rock impact, avoiding rigid deformation and damage of the baffle plate 2, and improving the protective stability and service life of the device. During the synchronous movement of the casing 401 and the baffle plate 2, the valve disc 6 connected to the casing 401 moves synchronously with the casing 401, thereby realizing the automatic opening or closing of the valve body 5. When the gangue hits the baffle plate 2 and the casing 401 is displaced by pressure, causing the valve disc 6 to open the valve body 5, the water inside the water tank 7 can flow into the valve body 5 through the inlet and be transported to the spray assembly 8 from the outlet of the valve body 5. The spray assembly 8 continuously sprays and cools the fallen and accumulated gangue pile, quickly reducing the high temperature generated by the gangue accumulation, avoiding safety hazards caused by high-temperature gangue, and improving the underground gangue disposal environment. When the impact force of the gangue dissipates, the baffle plate 2 resets, synchronously driving the casing 401 and the valve disc 6 to reset, and the valve disc 6 closes the valve body 5 again, cutting off the water supply passage from the water tank 7 to the spray assembly 8 and stopping the spraying operation. In addition, the adjustment mechanism 404 can slide along the insertion tube 403, and can adjust the installation position and pre-tightening state of the buffer component 402 according to the actual buffering needs, match the impact conditions of gangue of different intensities, and realize flexible adaptation of buffering force. Throughout the process, through the coordinated cooperation of adjustable tilt angle, adaptive buffering and linkage spray cooling, the overall protection effect of gangue removal operation is improved, and the safe and stable operation of gangue removal operation is guaranteed.

[0094] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 this invention.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0096] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0097] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0098] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0099] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A waste rock removal device with adjustable tilt angle, characterized in that, include: A support frame and a rock-blocking plate, the rock-blocking plate being pivotally mounted on the support frame, the extending direction of the rock-blocking plate being arranged at an angle to the extending direction of the support frame; An adjustment mechanism is provided, the mounting end of which is connected to the support frame, and the output end of which is connected to the rock-blocking plate and can pull the rock-blocking plate closer to or away from the support frame in order to adjust the angle between the rock-blocking plate and the support frame.

2. The adjustable-angle waste rock blocking device according to claim 1, characterized in that, The adjustment mechanism includes a first adjustment motor, an adjustment gear, and a driven gear. The first adjustment motor is mounted on the support frame and is connected to the adjustment gear for transmission. The driven gear is rotatably mounted on the support frame and meshes with the adjustment gear for transmission. The baffle plate is connected to the driven gear.

3. The adjustable-angle waste rock blocking device according to claim 2, characterized in that, Also includes: The encoder is connected to the first regulating motor and is used to collect information on at least one of the following parameters of the first regulating motor: the number of rotations, the rotation angle, and the rotation speed. The control system is electrically connected to both the first regulating motor and the encoder.

4. The adjustable-angle waste rock blocking device according to claim 2, characterized in that, It also includes a self-locking device that can lock the baffle plate and the support frame when the baffle plate is pivoted to any position relative to the support frame; The self-locking device includes a brake disc and a brake element. The brake disc is sleeved on the output end of the motor shaft of the first adjusting motor. The brake element is connected to the support frame and arranged adjacent to the brake disc. The brake element can lock the brake disc when it is close to it or release the brake disc when it is far away from it. The outer circumferential surface of the brake disc is provided with wear-resistant brake pads.

5. The adjustable rock-blocking device with adjustable rock-discharging angle according to any one of claims 1-4, characterized in that, It also includes an adaptive buffering mechanism, which comprises: A sleeve and a cannula, wherein the sleeve is connected to the baffle plate, at least a portion of the cannula is slidably fitted inside the sleeve, and one end of the cannula away from the sleeve is connected to the support frame; A buffer element is provided between the sleeve and the insertion tube. The buffer element is capable of pushing and pulling the sleeve to extend and retract along the extension direction of the insertion tube, so as to reduce vibration of the sleeve along the extension direction of the insertion tube.

6. The adjustable-angle waste rock blocking device according to claim 5, characterized in that, The adaptive buffer mechanism further includes an adjustment mechanism two, which includes an adjustment component and a sliding plate. The mounting end of the adjustment component is connected to the support frame, and the sliding plate is slidably connected to the insertion tube. Both ends of the buffer are connected to the sleeve and the sliding plate, respectively. The output end of the adjustment component is connected to the sliding plate and can push and pull the sliding plate relative to the insertion tube to slide along the extension direction of the insertion tube.

7. The adjustable-angle waste rock blocking device according to claim 6, characterized in that, The adjustment assembly includes a second adjustment motor and an adjustment screw. The second adjustment motor is mounted on the support frame and is throttle-connected to the adjustment screw. At least a portion of the adjustment screw fits inside the insertion tube and is rotatably connected to the insertion tube. One end of the adjustment screw away from the second adjustment motor is connected to the sliding plate so that the sliding plate can slide relative to the insertion tube along the extension direction of the insertion tube.

8. The adjustable-angle waste rock blocking device according to claim 7, characterized in that, The sliding plate is provided with a bearing on the side opposite to the buffer, and the end of the adjusting screw opposite to the second adjusting motor is connected to the bearing.

9. The adjustable-angle waste rock blocking device according to claim 6, characterized in that, Also includes: A water tank is mounted on the support frame; The valve body and valve disc are provided. The inlet of the valve body is connected to the water tank. The valve body is connected to the sliding plate. At least a portion of the valve disc is slidably fitted into the valve body. One end of the valve disc away from the valve body is connected to the sleeve. The valve disc has a first position and a second position. When the sleeve slides relative to the insertion tube, the valve disc can switch between the first position and the second position to open or block the outlet of the valve body. A spray assembly is provided, wherein the outlet of the valve body is connected to the spray assembly, and the spray assembly is connected to the gangue baffle plate and is used to spray water to cool the coal gangue.

10. The adjustable-angle waste rock removal device according to claim 9, characterized in that, It also includes a top plate, which is located on top of the support frame, and the water tank is connected to the top plate; The outer wall surface of the top plate is provided with a wear-resistant and corrosion-resistant coating. The top plate has a protective flange at its edge.

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