A large-angle belt pressing conveyor for coal mine operations with a belt pressing structure

Abstract

The present invention belongs to the technical field of conveyors, and specifically relates to a large-angle belt-pressing conveyor for coal mine operations with a belt-pressing structure, which includes a spillage detection component, a data processing component, and a spillage regulation component. It is used to generate an instruction for spillage regulation according to the calculation and processing result information of the data processing component, and transmit the generated instruction to the execution component. The execution component includes one or a combination of two of a deviation correction component or a self-lubricating component; in the present invention, by first collecting parameters of different parts and different types to comprehensively judge the spillage situation, and using this as the input of information, different countermeasures can be judged. While being able to accurately and effectively control the spillage phenomenon during the conveying process, it can avoid unnecessary waste of energy, and at the same time reduce the impact on the stability of the conveyor belt during the transportation process. Furthermore, it can enable the conveyor to transport more stably and improve the transportation efficiency of the conveyor.

Description

Technical Field

[0001] The invention belongs to the technical field of conveyors, and particularly relates to a large-angle belt-pressing conveyor for coal mine operations with a belt-pressing structure. Background Art

[0002] There is often a large height difference between working faces in coal mine operations. Therefore, during the transportation process between working faces in coal mines, lifting operations are required. Among existing equipment, conveyors are widely used for transportation. Due to the existence of the height difference, the conveyor belt of the conveyor will have a large inclination angle during operation. A large inclination angle will cause the coal mine to have a tendency to slide under the action of gravity during transportation, resulting in the rolling and leakage of coal mine particles. When the equipment is operating stably, the rolling and leakage rate of the coal mine during large-angle transportation is relatively low. When the equipment fails and the conveyor belt becomes unstable, the leakage rate will increase to a large extent.

[0003] Among the many factors affecting the stability of the conveyor belt, the transportation stability of the belt-pressing wheel is one of the most influential factors. Exactly because in a large-angle conveyor, the belt-pressing wheel plays a role in changing the movement trajectory of the conveyor belt, and its belt-pressing position will directly affect the inclination angle of the inclined section of the conveyor belt. The continuous change of the inclination angle will cause the conveyor belt to vibrate. In the prior art, the belt-pressing wheel is usually rotatably installed on the frame of the conveyor through a bearing seat. The main factors causing changes in the conveyor belt angle in this installation method are as follows: First, since coal mine materials are transported, there are more dust and particles, which will cause dust and particles to enter the bearing seat, resulting in the belt-pressing wheel not being able to rotate normally, leading to sliding friction between the belt-pressing wheel and the conveyor belt, and thus the phenomenon of belt vibration. Another factor causing the instability of the belt-pressing wheel is that during the feeding process, the ore materials are unevenly distributed on the conveyor belt and skewed, resulting in the ore materials being padded under the belt-pressing wheel when passing through the conveyor belt. As a result, the conveyor belt is squeezed downward when passing through the belt-pressing wheel and rebounds when leaving the belt-pressing wheel, causing vibration of the conveyor belt. Both of the above points will increase the leakage rate during transportation. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, the invention provides a large-angle belt-pressing conveyor for coal mine operations with a belt-pressing structure. The invention mainly solves the problem of high leakage rate of transported ore materials caused by the fluctuation of the belt-pressing wheel in the existing belt-pressing conveyor.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a large-angle belt-pressing conveyor for coal mine operation with a belt-pressing structure, including a frame body, a driving roller and a driven roller installed on the frame body, a power assembly for driving the driving roller, and a conveyor belt installed on the driving roller and the driven roller for carrying ore; it further includes belt-pressing wheels symmetrically arranged on the upper part of the lower end of the frame body for pressing the conveyor belt, and the belt-pressing wheels are rotatably installed on the frame body through self-lubricating components;

[0006] A deviation rectifying component is arranged on the horizontal section at the lower end of the frame body, and the deviation rectifying component is used to correct the stacking state of the ore on the conveyor belt that has not entered the inclined section;

[0007] A spillage detection assembly, including a dynamic detection sensor arranged on the inclined section of the frame body for detecting the ore spillage data on the inclined section during the operation of the conveyor, a vibration sensor arranged at the lower end of the upper conveyor belt for detecting the running stability of the conveyor belt, and a pressure sensor arranged on the belt-pressing wheel for detecting the pressure data on the belt-pressing wheel during the operation of the conveyor;

[0008] A data processing component is used to receive the ore spillage-related data collected by the spillage detection assembly (including the data obtained by the dynamic detection sensor, the data detected by the vibration sensor, and the data detected by the pressure sensor), and perform calculation and processing on it;

[0009] A spillage regulation component is used to generate an instruction for spillage regulation according to the calculation result information of the data processing component, and transmit the generated instruction to the execution component, and the execution component includes one or a combination of two of the deviation rectifying component or the self-lubricating component.

[0010] Preferably, the self-lubricating component includes an end sleeve, and the end sleeve is fixedly connected to the belt-pressing wheel; a transition shaft is rotatably connected inside the end sleeve; clamping holes are evenly spaced along the circumferential direction on the transition shaft; sliding holes are formed along the circumferential direction on the end sleeve, and a positioning pin is slidably connected inside the sliding holes;

[0011] One end of the transition shaft away from the belt-pressing wheel is rotatably connected to a bushing; an oil injection hole is formed on the bushing; a guiding hole is formed along the circumferential direction on the bushing, and a push rod is slidably connected inside the guiding hole; one end of the bushing away from the transition shaft is slidably connected to a slider; one side of the slider is set as an inclined surface; one end of the push rod contacts the inclined surface; a return spring is fixedly connected to the end of the slider away from the transition shaft, and the other end of the return spring abuts against the inner wall of the bushing;

[0012] A decorative cylinder is sleeved outside the bushing; one end of the decorative cylinder is fixedly connected to the bushing; a through hole is formed on the decorative cylinder, and the through hole is communicated with the oil injection hole through a hose;

[0013] One end of the push rod away from the guiding hole is provided with a first spring, one end of the first spring is fixedly connected to the push rod, and the other end is fixedly connected to the decorative cylinder;

[0014] A second spring is arranged at one end of the positioning pin away from the clamping hole. One end of the second spring is fixedly connected to the positioning pin, and the other end is fixedly connected to the decorative cylinder;

[0015] A sliding sleeve is slidably connected to the outside of the decorative cylinder. One end of the inner side of the sliding sleeve is fixedly connected with a first magnet at equal intervals along the circumferential direction. The other end of the inner side of the sliding sleeve is fixedly connected with a second magnet at equal intervals along the circumferential direction. The ejector rod is made of a magnetic material, and the magnetic poles on the side of the ejector rod opposite to the second magnet are the same; The other end of the bushing is fixedly connected to the frame body through a bracket;

[0016] An oil injection assembly for injecting lubricating oil into the oil injection hole is arranged above the sliding sleeve.

[0017] Preferably, the oil injection assembly includes a fixing frame fixedly connected to the frame body; An electric push rod is fixedly connected to the lower end of the fixing frame, and an oil injection gun is fixedly connected to the movable end of the electric push rod;

[0018] One end of the bushing is provided with an inclined part. The oil injection gun is provided with an oil injection nozzle and a pressing head. The pressing head is connected to the oil injection gun through an elastic member, and the lower end of the pressing head is lower than the lower end of the oil injection nozzle. The pressing head is located above the inclined part. A limiting spring is arranged between the sliding sleeve and the decorative cylinder for resetting the sliding sleeve.

[0019] Preferably, clamping grooves are arranged on one side surface of the conveyor belt opposite to each other. Guide seats are evenly spaced on the frame body. Grooves are evenly spaced on the guide seats, and balls are ball-jointed in the grooves. The upper ends of the balls are in contact with the clamping grooves; The guide seat is of an arc-shaped structure.

[0020] Preferably, the deviation rectifying component includes a mounting plate connected to the fixing frame. Pressing cylinders are symmetrically and fixedly connected below the mounting plate. A pressing rod is slidably connected inside the pressing cylinder; The lower end of the pressing rod is hinged with a pressing plate, and a stop block for limiting the rotation angle of the pressing plate is arranged at the end of the pressing rod;

[0021] A support frame is fixedly connected to one side of the frame body near the feeding position. A movable seat is arranged on the support frame and is slidably connected to the support frame. Balls ball-jointed on the movable seat are in contact with the clamping grooves on the conveyor belt; A piston cylinder is fixedly connected to the lower part of the support frame. A piston rod is slidably connected inside the piston cylinder. One end of the piston rod is clamped with a clamping seat at the lower part of the movable seat. An electromagnetic valve is arranged on the frame body. The piston cylinder is communicated with an inlet of the electromagnetic valve through a pipeline. The other inlet of the electromagnetic valve is communicated with an external hydraulic device. The outlet of the electromagnetic valve is communicated with the inside of the pressing cylinder through a pipeline.

[0022] Preferably, a horizontal movement component for driving the pressing plate to move along the movement direction of the conveyor belt is arranged between the mounting plate and the fixing frame. A speed measuring component is arranged on the frame body for measuring the conveying speed of the conveyor belt.

[0023] Preferably, the conveyor belt includes a steel wire rope core layer and surface layers coated on both sides of the steel wire rope core layer. Loosely woven parts are arranged along the belt length direction on both sides of the steel wire rope core layer, and the remaining parts are densely woven parts. The number of transverse steel wires in the loosely woven parts does not exceed 1 / 3 of the number of transverse steel wires in the densely woven parts.

[0024] Preferably, a hot melt layer is arranged between the steel wire rope core layer and the surface layer of the conveyor belt, and the melting temperature of the hot melt layer is less than the melting temperature of the surface layer.

[0025] Preferably, the edge of the pressure plate is in a warped structure, and the pressure plate is higher on the material-receiving side than on the material-discharging side.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, the deviation correction component is used to correct the deviation of the ore that has not entered the area of the pressure roller, preventing the ore from entering directly below the pressure roller, which may cause the vibration of the conveyor belt and further lead to the spillage of the ore. At the same time, the deviation correction component can control the uniform distribution of the ore on the conveyor belt, preventing the increase in the dropping rate caused by deviation.

[0028] The self-lubricating component lubricates the rotating connection part between the pressure roller and the frame body to eliminate the stalling of the pressure roller caused by dust or particles, and further prevent the spillage of the ore caused by the vibration of the conveyor belt.

[0029] By simultaneously controlling the operation of the deviation correction component and the self-lubricating component, the factors that may cause the vibration of the conveyor belt are eliminated, promoting the stable operation of the conveyor belt and reducing the spillage rate of the ore. When the spillage rate is high, parameters of different parts and different types are first collected to comprehensively judge the spillage situation, which is used as the input of information. Different countermeasures are then determined, enabling precise and effective control of the spillage phenomenon during the conveying process, avoiding unnecessary energy waste, and reducing the impact on the stability of the conveyor belt during transportation. As a result, the conveyor can operate more stably and the transportation efficiency of the conveyor can be improved.

[0030] 2. When the present invention is working normally, the position of the first magnet away from the positioning pin. At this time, under the action of the second spring, the positioning pin is inserted into the clamping hole on the transition shaft. At this time, the rotation direction between the end shaft and the transition shaft is restricted. Then the rotation of the pressure roller is realized by the rotational connection between the transition shaft and the shaft sleeve. When the rotation between the transition shaft and the shaft sleeve becomes sluggish due to external dust or particles, at this time, by sliding the sliding sleeve, the second magnet is moved to a position directly opposite to the positioning pin. At this time, the positioning pin will move away from the clamping hole along the sliding hole under the action of the second spring, and finally break away from the restriction of the sliding hole. Then the restriction on the rotation direction between the end sleeve and the transition is released, and they will slide relative to each other, still maintaining the rotation state of the pressure roller, and thus maintaining its stability during the movement with the conveyor belt. At this time, it can avoid the vibration of the pressure roller caused by particles during the lubrication process of the connection part of the transition shaft and during the transmission through the gap between the transition shaft and the shaft sleeve. Due to the long-term rotational wear between the transition shaft and the shaft sleeve, the gap between them will increase, which will lead to the entry of more and larger ore particles. During the lubrication process, oil is injected from one side of the gap to the other side. During the movement of the oil, the particles will be driven. If the rotation between the transition shaft and the shaft sleeve is still relied on, vibration will be generated during the lubrication process, and thus the stability of the conveyor belt can be maintained; at the same time, it can quickly play a transitional effect during the process of adjusting the sluggish rotation problem of the pressure roller, and avoid the problem of high spillage rate caused by the long adjustment time.

[0031] 3. By providing a clamping groove at the bottom of the conveyor belt in the present invention, the bottom position of the conveyor belt can be thickened, and thus it has higher wear resistance; at the same time, by setting the existing driving roller in an arc shape of a guide seat, when the conveyor belt is carrying ore, the cross-sectional shapes at various places are basically the same. Thus, while providing better support, it can reduce the wear rate of the bottom of the conveyor belt 5, and thus improve the durability of the conveyor belt; by providing rolling balls on the guide seat and contacting the clamping groove at the same time, it can better restrict the lateral displacement of the conveyor belt, and thus effectively avoid the deviation of the conveyor belt, and further reduce the deviation of the ore on the conveyor belt, and further reduce the situation of ore spilling caused by ore deviation, and improve the stability of transportation.

[0032] 4. In the present invention, since most conveyor belts with large inclination angles are provided with a belt-pressing wheel when in use, the belt-pressing wheel enables the conveyor belt to present a large inclination angle and can control the edge of the conveyor belt to bend upward to form a tilt at the edge, thereby preventing the mineral materials from being scattered from the edge during transportation. Since the conveyor belt needs to withstand a large force during transportation, a braided layer is often provided inside, which will affect the troughing property of the conveyor belt. Therefore, in the present scheme, a sparsely woven portion is provided near the edge of the steel wire rope core layer of the conveyor belt to reduce the transverse steel wire rope here, thereby reducing the resistance encountered here during bending, thereby ensuring the strength of the conveyor belt while improving the troughing property of the conveyor belt, thereby enabling the edge of the conveyor belt to better maintain a completely upward state when carrying mineral materials, thereby reliably preventing the mineral materials from falling from the edge of the conveyor belt, further reducing the scattering rate of mineral materials during transportation, and improving the stability of transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a first overall structural schematic diagram of the conveyor in the present invention;

[0035] Figure 2 It is a second overall structural schematic diagram of the conveyor in the present invention;

[0036] Figure 3 It is a schematic diagram of the installation structure of the medium pressure pulley and the self-lubricating component of the present invention;

[0037] Figure 4 This is a schematic diagram of the first installation structure of the deviation-correcting component in the present invention;

[0038] Figure 5 It is a schematic diagram of a second installation structure of the deviation-correcting component in the present invention;

[0039] Figure 6 It is a schematic diagram of the overall structure of the deviation correction component in the present invention;

[0040] Figure 7 It is a structural schematic diagram of the pressing plate in the present invention;

[0041] Figure 8 This is a schematic diagram of the non-working state of the self-lubricating component in the present invention;

[0042] Figure 9 It is a schematic diagram of the lubrication state of the self-lubricating component in the present invention;

[0043] Figure 10 It is a schematic diagram of the first internal structure of the self-lubricating component in the present invention;

[0044] Figure 11 is an exploded structural schematic diagram of the self-lubricating component in the present invention;

[0045] Figure 12 is a second internal structural schematic diagram of the self-lubricating component in the present invention;

[0046] Figure 13 is an installation structural schematic diagram of the sliding sleeve and the decorative cylinder in the present invention;

[0047] Figure 14 is a cross-sectional view of the conveyor belt in the present invention;

[0048] Figure 15 is a braided structural schematic diagram of the metal rope core layer in the present invention;

[0049] Figure 16 is an internal structural schematic diagram of the conveyor belt in the present invention;

[0050] In the figure: frame body 1, driving roller 2, driven roller 3, power assembly 4, conveyor belt 5, pressing roller 6, end sleeve 7, transition shaft 8, card hole 9, sliding hole 10, positioning pin 11, bushing 12, oil injection hole 13, guiding hole 14, slider 15, ejector rod 16, return spring 17, decorative cylinder 18, first spring 19, second spring 20, sliding sleeve 21, first magnet 22, second magnet 23, fixing frame 24, electric push rod 25, oil injection gun 26, oil injection nozzle 27, extrusion head 28, elastic member 29, clamping groove 30, guiding seat 31, ball 32, mounting plate 33, extrusion cylinder 34, extrusion rod 35, pressing plate 36, stop block 37, support frame 38, movable seat 39, piston cylinder 40, piston rod 41, solenoid valve 42, horizontal moving assembly 43, wire rope core layer 44, surface layer 45, sparse weaving part 46, dense weaving part 47, hot melt layer 48, warped structure 49, limiting spring 50. Specific embodiments

[0051] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0052] Embodiment 1;

[0053] As Figures 1 to 3 shown, a large-angle belt-pressing type conveyor for coal mine operation with a belt-pressing structure includes a frame body 1, a driving roller 2 and a driven roller 3 installed on the frame body 1, a power assembly 4 for driving the driving roller 2, and a conveyor belt 5 installed on the driving roller 2 and the driven roller 3 for carrying ore; it further includes a pressing roller 6, the pressing roller 6 symmetrically arranged on the upper part of the lower end of the frame body 1 for pressing the conveyor belt 5, and the pressing roller 6 is rotatably installed on the frame body 1 through a self-lubricating component;

[0054] A deviation correction component is provided at the horizontal section at the lower end of the frame body 1, and the deviation correction component is used to correct the stacking state of the ore on the conveyor belt 5 that has not entered the inclined section;

[0055] A spillage detection assembly, including a dynamic detection sensor provided at the inclined section of the frame body 1, which is used to detect the spillage data of the ore at the inclined section during the operation of the conveyor, a vibration sensor provided at the lower end of the upper conveyor belt 5 for detecting the running stability of the conveyor belt 5, and a pressure sensor provided on the pressure roller 6 for detecting the pressure data on the pressure roller 6 during the operation of the conveyor (the pressure sensor on the pressure roller here can be a strain type pressure sensor provided on the surface of the pressure roller shaft. By measuring the resistance change caused by the tiny deformation on the shaft surface, the radial force is deduced and connected through a conductive slip ring during installation, which is a direct application of the existing technology);

[0056] A data processing component is used to receive the ore spillage related data collected by the spillage detection assembly (including the data obtained by the dynamic detection sensor, the data detected by the vibration sensor, and the data detected by the pressure sensor), and perform calculation and processing on it;

[0057] A spillage control component is used to generate a spillage control instruction according to the calculation result information of the data processing component, and transmit the generated instruction to the execution component. The execution component includes one or a combination of two of the deviation correction component or the self-lubricating component.

[0058] Precisely because in a large inclination angle conveyor, the pressure roller 6 plays a role in changing the movement trajectory of the conveyor belt 5, and its pressure belt position will directly affect the inclination angle of the inclined section of the conveyor belt 5. The continuous change of the inclination angle will cause the conveyor belt 5 to shake; in the prior art, the pressure roller 6 is usually rotatably installed on the frame of the conveyor through a bearing seat. The main factors causing the change of the conveyor belt angle in this installation method are as follows: one is that since coal mine materials are transported, there are more dust and particles, which will cause dust and particles to enter the bearing seat, and then cause the pressure roller 6 to not rotate normally, and then cause sliding friction between the pressure roller 6 and the conveyor belt 5, and then cause the phenomenon of belt vibration. Another factor causing the instability of the pressure roller 6 is that during the feeding process, the ore is unevenly distributed on the conveyor belt 5 and skewed, and then the ore pads under the pressure roller 6 when passing through the conveyor belt 5. Then, the conveyor belt 5 is squeezed downward when passing through the pressure roller 6 and rebounds when leaving the pressure roller 6, which causes the vibration of the conveyor belt 5. The above two points will both increase the spillage rate during the transportation process.

[0059] When transporting ore, the dynamic movement data C1 of the ore in the inclined section (i.e., the rolling number of the ore during transportation per unit time), the vibration data information C2 of the conveyor belt 5 in the inclined section (i.e., the vibration amplitude data of the conveyor belt 5 per unit time), and the pressure data C3 detected by the pressure sensor on the pressure belt wheel 6 (i.e., the pressure data on the pressure belt wheel 6 per unit time, and the unit time involved in the above C1, C2, and C3 is the ratio of the length of the inclined section to the movement speed of the conveyor belt 5) are respectively obtained through the set spillage detection component; subsequently, the detected temperature data is transmitted to the data processing component, and then the data processing component compares the detected C2 data with the set vibration amplitude threshold of the conveyor belt 5 to obtain the number of times the vibration amplitude of the conveyor belt 5 exceeds the set value per unit time , and at the same time compare the detected data with the set pressure threshold to obtain the number of times the pressure exceeds the threshold per unit time ;

[0060] Subsequently, according to Formula 1 ; Calculate the ore spillage correction index number, where a, b, and c are the proportion coefficients of different sensors, and a + b + c = 1, which is set by the user through the user input component according to the actual use environment;

[0061] Subsequently, the obtained ore spillage correction index number after processing is transmitted to the spillage control component, and the spillage control component is based on Formula 2 where the group , respectively represent the instructions for the first gear, second gear, and third gear of the spillage control;

[0062] Among them, the instructions corresponding to the first gear and the second gear are one of controlling the operation of the deviation correction component or controlling the operation of the self-lubricating component;

[0063] Among them, through the operation of the deviation correction component, the ore that has not entered the area of the pressure belt wheel 6 is corrected to prevent the ore from entering directly below the pressure belt wheel 6, causing the vibration of the conveyor belt and then resulting in the spillage of the ore. At the same time, through the deviation correction component, the ore can be evenly distributed on the conveyor belt 5 to prevent the increase in the dropping rate caused by deviation;

[0064] The self-lubricating component lubricates the rotating connection part between the pressure belt wheel 6 and the frame body 1 to eliminate the stalling of the pressure belt wheel 6 caused by dust or particles, and then the spillage of the ore caused by the vibration belt phenomenon of the conveyor belt 5;

[0065] The instruction corresponding to the third gear is to control the operation of both the deviation correction component and the self-lubricating component at the same time to eliminate the factors that may cause the vibration of the conveyor belt 5, and then promote the stable operation of the conveyor belt 5 to reduce the ore spillage rate;

[0066] In this solution, parameters of different parts and different types are first collected to comprehensively judge the spillage situation, which is used as the input of information. Different countermeasures are then judged, enabling precise and effective control of the spillage phenomenon during the conveying process, avoiding unnecessary waste of energy, reducing the impact on the stability of the conveyor belt 5 during transportation, and thus enabling the conveyor to transport more stably and improving the transportation efficiency of the conveyor.

[0067] At the same time, in this solution, a feedback system can also be provided, including obtaining a spillage correction index A correction index less than 3 and the subsequent correction index An acquisition component, a calculation component that performs operations on the data information acquired by the acquisition component through the following formula A judgment component that judges the positive and negative of the calculation result, and a display component that displays the judgment result to the user.

[0068] Among them, through the positive and negative results of multiple consecutive groups displayed by the display component for the user, the user can intuitively make a judgment. If the results of multiple times are all negative, it means that the corresponding instruction of the previous gear cannot well solve the problem of ore spillage. Therefore, the user needs to adjust the proportion coefficients a, b, and c of different sensors, so that the deviation correction component and the self-lubricating component can more efficiently and accurately solve the problem of ore dropping.

[0069] Embodiment 2;

[0070] Based on Embodiment 1, the present application provides another technical solution. As Figures 8 to 11 shown, the self-lubricating component includes an end sleeve 7, and the end sleeve 7 is fixedly connected to the pressure belt wheel 6; a transition shaft 8 is rotatably connected inside the end sleeve 7; clamping holes 9 are evenly spaced along the circumferential direction on the transition shaft 8; sliding holes 10 are opened along the circumferential direction on the end sleeve 7, and a positioning pin 11 is slidably connected inside the sliding holes 10;

[0071] One end of the transition shaft 8 away from the pressure belt wheel 6 is rotatably connected to a bushing 12; an oil injection hole 13 is opened on the bushing 12; a guiding hole 14 is opened along the circumferential direction on the bushing 12, and a top rod 16 is slidably connected inside the guiding hole 14; a slider 15 is slidably connected to one end of the bushing 12 away from the transition shaft 8; one side of the slider 15 is set as an inclined surface; one end of the top rod 16 contacts the inclined surface; one end of the slider 15 away from the transition shaft 8 is fixedly connected to a return spring 17, and the other end of the return spring 17 abuts against the inner wall of the bushing 12;

[0072] A decorative cylinder 18 is sleeved outside the bushing 12; one end of the decorative cylinder 18 is fixedly connected to the bushing 12; through holes are formed in the decorative cylinder 18, and the through holes are communicated with the oil injection hole 13 through a hose;

[0073] As Figure 13 shown, a first spring 19 is arranged at one end of the ejector rod 16 far from the guide hole 14. One end of the first spring 19 is fixedly connected to the ejector rod 16, and the other end is fixedly connected to the decorative cylinder 18;

[0074] A second spring 20 is arranged at one end of the positioning pin 11 far from the clamping hole 9. One end of the second spring 20 is fixedly connected to the positioning pin 11, and the other end is fixedly connected to the decorative cylinder 18;

[0075] A sliding sleeve 21 is slidably connected to the outside of the decorative cylinder 18. One end of the inner side of the sliding sleeve 21 is fixedly connected with first magnets 22 at equal intervals along the circumferential direction. The other end of the inner side of the sliding sleeve 21 is fixedly connected with second magnets 23 at equal intervals along the circumferential direction. The ejector rod 16 is made of a magnetic material, and the magnetic poles on the side of the ejector rod 16 opposite to the second magnets 23 are the same; the other end of the bushing 12 is fixedly connected to the frame body 1 through a bracket;

[0076] An oil injection assembly for injecting lubricating oil into the oil injection hole 13 is arranged above the sliding sleeve 21.

[0077] During operation, when operating normally, the first magnet 22 is away from the position of the positioning pin 11. At this time, under the action of the second spring 20, the positioning pin 11 is inserted into the clamping hole 9 on the transition shaft 8. At this time, the rotation direction between the end shaft and the transition shaft 8 is restricted. Then, the rotation of the pinch roller 6 is realized by the rotational connection between the transition shaft 8 and the bushing 12. When external dust or particles cause the rotation between the transition shaft 8 and the bushing 12 to become sluggish, the second magnet 23 is moved to a position directly opposite the positioning pin 11 by sliding the sliding sleeve 21. At this time, the positioning pin 11 will move away from the clamping hole 9 along the sliding hole 10 under the action of the second spring 20 and finally break away from the restriction of the sliding hole 10. At this time, the restriction on the rotation direction between the end sleeve 7 and the transition shaft 8 is released, and they will slide relative to each other, still maintaining the rotational state of the pinch roller 6, thereby maintaining its stability during the movement with the conveyor belt 5. At this time, it can avoid the vibration of the pinch roller 6 caused by particles during the lubrication process of the connection part of the transition shaft 8 and during the transmission through the gap between the transition shaft 8 and the bushing 12 (due to the long-term rotational wear between the transition shaft 8 and the bushing 12, the gap between them will increase, and more and larger ore particles will enter. When lubricating, oil is injected from one side of the gap to the other side, and the particles will be driven during the movement of the oil. If the rotation between the transition shaft 8 and the bushing 12 is still relied on, vibration will be generated during the lubrication process), thereby maintaining the stability of the conveyor belt 5; at the same time, it can quickly play a transitional role during the process of adjusting the sluggish rotation problem of the pinch roller 6, avoiding the problem of high spillage rate caused by too long adjustment time;

[0078] At the same time, at the position where the first magnet 22 is away from the positioning pin 11, the second magnet 23 is located directly opposite the ejector rod 16. Since the polarities of the adjacent sides of the two are the same, the ejector rod 16 will apply a force to the ejector rod 16 under the action of the second magnet 23, causing the ejector rod 16 to move towards the slider 15, making the slider 15 fit against the transition shaft 8 to prevent the applied lubricating oil from quickly flowing out. When the sliding sleeve 21 moves, the second magnet 23 moves to a position away from the ejector rod 16. At this time, the ejector rod 16 retracts under the action of the first spring 19. At this time, under the action of the return spring 17, the slider 15 moves away from the transition shaft 8. At this time, lubricating oil is injected into the gap between the slider 15 and the transition shaft 8 through the oil injection assembly. The lubricating oil flows out from the gap between the transition shaft 8 and the bushing 12 and takes away dust or particles to achieve lubrication of the connection part;

[0079] Subsequently, by resetting the sliding sleeve 21, the first magnet 22 is further moved away from the positioning pin 11, causing the positioning pin 11 to insert into the bayonet. Subsequently, the second magnet 23 approaches the position opposite to the ejector rod 16. At this time, the ejector rod 16 presses the slider 15, generating an extrusion force on the ejector rod 16, and squeezing the lubricating oil between the slider 15 and the transition shaft 8 into the connection between the transition shaft 8 and the bushing 12 again, further lubricating the connection position, thereby improving the thoroughness of discharging dust and particles at the connection position by lubrication, and further improving the self-lubrication effect.

[0080] As Figure 3 , Figure 4 , Figure 8 and Figure 9 shown, the oil injection assembly includes a fixed frame 24, and the fixed frame 24 is fixedly connected to the frame body 1; a power-driven push rod 25 is fixedly connected to the lower end of the fixed frame 24, and an oil injection gun 26 is fixedly connected to the movable end of the power-driven push rod 25;

[0081] One end of the bushing 12 is provided with an inclined portion. The oil injection gun 26 is provided with an oil injection nozzle 27 and a squeezing head 28. The squeezing head 28 is connected to the oil injection gun 26 through an elastic member 29, and the lower end of the squeezing head 28 is lower than the lower end of the oil injection nozzle 27. The squeezing head 28 is located above the inclined portion. A limiting spring 50 is provided between the sliding sleeve 21 and the decorative cylinder 18 for resetting the sliding sleeve 21 after the squeezing head 28 and the oil injection nozzle 27 are withdrawn.

[0082] When lubrication is not required, the sliding sleeve 21 covers the oil injection hole 13 at this time to prevent lubricating oil from leaking and being contaminated. When oil injection is required, the movable end of the power-driven push rod 25 moves downward, causing the squeezing head 28 to press against the inclined portion, and then pushing the inclined portion and the sliding sleeve 21 to move to one side. Subsequently, the oil injection nozzle 27 will continue to move against the inclined portion until the oil injection hole 13 is exposed. Then the oil injection nozzle 27 is connected to the oil injection hole 13, facilitating oil injection lubrication. At the same time, during this process, the movement of the first magnet 22 and the second magnet 23 can be realized, and thus the rotational position of the transition shaft 8 can be automatically changed, facilitating the full automation of the lubrication process and improving the lubrication efficiency and effect.

[0083] Embodiment 3;

[0084] Based on the embodiment, the present application provides another technical solution. As Figure 3 , Figure 4 , Figure 5 and Figure 14 shown, a card slot 30 is provided on one side surface of the conveyor belt 5 opposite to each other. Guide seats 31 are evenly spaced on the frame body 1. Grooves are evenly spaced in the guide seats 31, and balls 32 are ball-jointed in the grooves. The upper ends of the balls 32 are in contact with the card slot 30; the guide seats 31 are in an arc-shaped structure.

[0085] During operation, since at least three support rollers are usually provided under the existing conveyor belt 5 after it is loaded with ore, the bottom support roller is used for support, and the support rollers on both sides have a shaping effect, making the cross-section of the conveyor belt 5 present a groove shape. However, the existing support method usually leads to poor contact between the conveyor belt 5 and the bottom roller, which in turn causes the conveyor belt 5 to deform at the position of the conveyor roller, and the cross-section at the position without the conveyor roller is arc-shaped, resulting in friction at the position of the roller, and further causing serious wear of the conveyor belt 5. Therefore, in this solution, by setting a card slot 30 at the bottom of the conveyor belt 5, the bottom position of the conveyor belt 5 can be thickened, thereby having higher wear resistance; at the same time, by setting the existing driving roller into the arc shape of the guide seat 31, when the conveyor belt 5 is loaded with ore, the cross-sectional shapes at various places are basically the same, which can not only provide better support, but also reduce the wear rate of the bottom of the conveyor belt 5, thereby improving the durability of the conveyor belt 5.

[0086] By arranging rolling balls 32 on the guide seat 31 and contacting the card slot 30 at the same time, the lateral displacement of the conveyor belt 5 can be better restricted, thereby effectively avoiding the deviation of the conveyor belt 5, reducing the deviation of the ore on the conveyor belt 5, further reducing the situation of ore spilling caused by the deviation of the ore, and improving the stability of transportation.

[0087] As Figures 5 to 7 shown, the deviation rectifying component includes a mounting plate 33, the mounting plate 33 is connected to the fixing frame 24, symmetrically fixed connection with extrusion cylinders 34 is arranged below the mounting plate 33, and an extrusion rod 35 is slidably connected inside the extrusion cylinder 34; a pressing plate 36 is hinged at the lower end of the extrusion rod 35, and a stop block 37 for restricting the rotation angle of the pressing plate 36 is arranged at the end of the extrusion rod 35;

[0088] One side of the frame 1 near the feeding position is fixedly connected with a support frame 38, a movable seat 39 is arranged on the support frame 38, the movable seat 39 is slidably connected with the support frame 38, and the ball joint ball 32 on the movable seat 39 contacts the card slot 30 on the conveyor belt 5; a piston cylinder 40 is fixedly connected to the lower part of the support frame 38, a piston rod 41 is slidably connected inside the piston cylinder 40, one end of the piston rod 41 is clamped with the lower clamping seat of the movable seat 39, a solenoid valve 42 is arranged on the frame 1, the piston cylinder 40 is communicated with an inlet of the solenoid valve 42 through a pipeline, the other inlet of the solenoid valve 42 is communicated with an external hydraulic device, and the outlet of the solenoid valve 42 is communicated with the inside of the extrusion cylinder 34 through a pipeline.

[0089] As Figure 7 shown, the edge of the pressing plate 36 has a warped structure 49, and the pressing plate 36 is higher on the material-facing side than on the material-backing side.

[0090] During normal operation, the solenoid valve 42 is set to connect the piston cylinder 40 with the extrusion cylinder 34. When the ore on the conveyor belt 5 is placed obliquely, the conveyor belt 5 will shift, which will cause the card slot 30 to drive the ball 32 to move to one side, so as to drive the movable seat 39 to move to one side, squeezing the piston cylinder 40 on that side, and then the medium therein will enter the interior of the extrusion cylinder 34 on that side, causing the extrusion rod 35 therein to move downward, so as to squeeze the ore on that side. At the same time, the extrusion plate on the opposite side will move upward to create space, so as to correct the ore on the conveyor belt 5 and keep the conveyor belt 5 stable.

[0091] When active correction of the ore position is required, the solenoid valve 42 is used to connect and cut off the hydraulic device outside the extrusion cylinder 34 to disconnect the piston cylinder 40 from the extrusion cylinder 34. Then, the external hydraulic device is used to reset the extrusion rod 35, and at the same time, the pressing plate 36 is pressed down, so as to gather the ore at the edge of the conveyor belt 5 towards the middle, prevent the ore from being located below the pressure roller 6 when passing through the pressure roller 6, causing the conveyor belt 5 to shake, and then improve the movement stability of the conveyor belt 5, so as to reduce the dropping rate of the ore. In this solution, by switching between two modes, the correction of skew and the gathering of materials on the conveyor belt 5 are realized. Different factors can be solved by a set of facilities, improving the applicability of the device.

[0092] As Figures 6 to 7 shown, a horizontal movement component 43 for driving the pressing plate 36 to move along the movement direction of the conveyor belt 5 is provided between the mounting plate 33 and the fixed frame 24, and a speed measuring component is provided on the frame 1 for measuring the conveying speed of the conveyor belt 5.

[0093] During operation, when detecting whether the ore on the conveyor belt 5 is placed offset, there is a difference between the detection position and the position for shaping and correcting the ore. Moreover, the speed of the conveyor belt 5 during movement is not absolutely uniform. Affected by production requirements, the running speed of the conveyor belt 5 will be adjusted. Therefore, when it is detected that the ore is deviated, it is difficult to ensure the detection position when using the pressing plate 36 for trimming. Therefore, in this solution, a horizontal movement component 43 is provided on the mounting plate 33, and a speed measuring component is provided on the frame 1. The speed measuring component detects the movement speed of the conveyor belt 5, and then moves through the set horizontal movement component 43 to ensure that the position trimmed by the pressing plate 36 is the position where the ore placement is detected to be skewed, so as to ensure the accuracy and thoroughness of the deviation correction, avoid the occurrence of incorrect deviation correction, improve the stability of the ore on the conveyor belt 5, and then reduce the leakage rate during transportation.

[0094] During operation, by setting the pressure plate 36 in a form with warped edges, it is possible to avoid the friction between the pressure plate 36 and the conveyor belt 5 during the material pressing process, reduce the wear of the conveyor belt 5. At the same time, the warped shape can reduce the clamping between the conveyor belt 5 and the edge of the pressure plate 36, preventing the occurrence of jitter of the conveyor belt 5 and improving the stability during the transportation of the conveyor belt 5. At the same time, by setting the material-facing side of the pressure plate 36 facing the advancing direction of the conveyor belt 5 material and the back material side being higher on the other side opposite to the material-facing side, during the material pressing process, the ore passing through the pressure plate 36 can be compacted, and at the same time, it can prevent the ore from entering the upper part of the pressure plate 36 and causing spillage.

[0095] Example 4;

[0096] Based on Example 3, the present application provides another technical solution. As Figures 15 to 16 shown, the conveyor belt 5 includes a steel wire rope core layer 44 and surface layers 45 coated on both sides of the steel wire rope core layer 44. Loosely woven parts 46 are arranged along the belt length direction on both sides of the steel wire rope core layer 44, and the remaining parts are densely woven parts 47. The number of transverse steel wires in the loosely woven part 46 does not exceed 1 / 3 of the number of transverse steel wires in the densely woven part 47.

[0097] During operation, since most large-inclination conveyor belts 5 are provided with pressure rollers 6 when in use, one function of the pressure roller 6 is to enable the conveyor belt 5 to present a large-inclination state, and at the same time, it can control the edges of the conveyor belt 5 to bend upward, forming an upward warp at the edges, thereby preventing ore from spilling from the edges during transportation. And because the conveyor belt 5 needs to bear a large force during the transportation process, a woven layer is often provided inside, and the woven layer will affect the troughability of the conveyor belt 5. Therefore, in this solution, by setting the loosely woven part 46 at the position near the edge of the steel wire rope core layer 44 of the conveyor belt 5 to reduce the transverse steel wires here, thereby reducing the resistance received when bending here, and then being able to improve the troughability of the conveyor belt 5 while ensuring the strength of the conveyor belt 5, and then enabling the edges of the conveyor belt 5 to better maintain a completely upward state when carrying ore, thereby reliably preventing the problem of ore falling from the edges of the conveyor belt 5, further reducing the spillage rate during ore transportation and improving the transportation stability.

[0098] As Figure 16 shown, a hot melt layer 48 is provided between the steel wire rope core layer 44 and the surface layer 45 of the conveyor belt 5, and the melting temperature of the hot melt layer 48 is less than the melting temperature of the surface layer 45.

[0099] During operation, due to the presence of the pinch roller 6, wear often occurs at the edge during use. At the same time, since the transported ore generally has edges and corners, local damage to the conveyor belt 5 is likely to occur during transportation. Replacing an entire conveyor belt 5 often requires a long downtime and multiple manual trips up and down the slope, which is relatively troublesome. If a patch-type repair is directly used, it will cause protrusions on the conveyor belt 5, affecting the transmission stability of the conveyor belt 5. At the same time, since the patch does not involve the internal steel wire core layer 44, the reliability after repair will be reduced. Therefore, in this solution, a hot-melt layer 48 is provided between the steel wire core layer 44 and the surface layer 45 of the conveyor belt 5, and by controlling the melting temperature of the hot-melt layer 48, the following repair method can be used to repair it;

[0100] S1: Adjust the edge length of the tool so that it is consistent with the thickness of the surface layer 45 of the conveyor belt 5. Then, use the tool to cut the surface layer 45 at the damaged position to ensure that the cutting marks form a closed area;

[0101] S2: Heat the conveyor belt 5 at a temperature that melts the hot-melt layer 48 but does not melt the surface layer 45. Then, lift the damaged surface layer 45 from the edge of the incision and continue heating during the process;

[0102] S3: After removing the two surface layers 45, blow the area repeatedly with a temperature more than 10°C higher than the melting temperature of the hot-melt layer 48 for at least 3 times;

[0103] S4: Check the condition of the steel wire core layer 44 at this place. Then, use the interpolation method to insert the damaged steel wire into the steel wire core layer 44 and anchor it stably. Then, attach the hot-melt layer 48 on it. Then, quickly blow it with the melting temperature of the hot-melt layer 48 until the surface melts, and quickly bond it to the metal wire core layer;

[0104] S5: Then, quickly blow it again with the melting temperature of the hot-melt layer 48 until the outer surface melts, and then attach the surface layer 45 again. Then, use rubber to fill the repair gap and clamp it stably for no less than 5 minutes until the temperature drops to room temperature to complete the local repair.

[0105] By adding the hot-melt layer 48, the rubber surface layer 45 can be more easily lifted, and at the same time, the internal steel wire layer can be repaired to improve the strength after repair, thereby improving the service adaptability of the conveyor belt 5.

[0106] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A large-angle belt-pressing belt conveyor for coal mine operations with a belt-pressing structure, comprising a frame (1), a driving roller (2) and a driven roller (3) installed on the frame (1), a power assembly (4) for driving the driving roller (2), and a conveyor belt (5) installed on the driving roller (2) and the driven roller (3) for carrying ore; characterized in that: It further includes a pinch roller (6). The upper part of the lower end of the frame body (1) is symmetrically provided with the pinch roller (6) for pressing the conveyor belt (5), and the pinch roller (6) is rotatably mounted on the frame body (1) through a self-lubricating component; A deviation rectifying component is arranged on the horizontal section at the lower end of the frame body (1), and the deviation rectifying component is used for correcting the stacking state of the ore materials on the conveyor belt (5) that have not entered the inclined section; A spillage detection assembly, including a dynamic detection sensor arranged on the inclined section of the frame body (1) for detecting the ore material spillage data on the inclined section when the conveyor is working, a vibration sensor arranged at the lower end of the upper conveyor belt (5) for detecting the running stability of the conveyor belt (5), and a pressure sensor arranged on the pinch roller (6) for detecting the pressure data on the pinch roller (6) when the conveyor is working; A data processing component for receiving the ore material spillage-related data collected by the spillage detection assembly and performing calculation and processing on it; A spillage regulation component for generating an instruction for spillage regulation according to the calculation and processing result information of the data processing component and transmitting the generated instruction to an execution component, and the execution component includes one or a combination of two of the deviation rectifying component or the self-lubricating component; The dynamic movement data C1 of the ore material in the inclined section, the vibration data information C2 of the conveyor belt (5) in the inclined section, and the pressure data C3 detected by the pressure sensor on the pressure belt wheel (6) are respectively obtained through the spillage detection component. Subsequently, the detected temperature data is transmitted to the data processing component for data processing to obtain the number of times the vibration amplitude of the conveyor belt (5) exceeds the set value per unit time , and obtain the number of times the pressure exceeds the threshold per unit time ; Subsequently, according to Formula 1 ; calculate the correction index number of material spillage, where a, b, and c are the proportion coefficients of different sensors, and a + b + c = 1; Subsequently, the obtained ore leakage correction index numbers after processing are transmitted to the leakage control component, and the leakage control component is based on Formula 2 where the group , respectively represent the instructions for the first, second, and third gears of leakage control; Among them, the instructions corresponding to the first gear and the second gear are one of controlling the operation of the deviation rectifying component or controlling the operation of the self-lubricating component, and the instruction corresponding to the third gear is to simultaneously control the operation of the deviation rectifying component and the self-lubricating component.

2. The large-angle belt pressing conveyor for coal mine operation with a belt pressing structure according to claim 1, characterized in that: The self-lubricating component includes an end sleeve (7), and the end sleeve (7) is fixedly connected to the pinch roller (6); a transition shaft (8) is rotatably connected inside the end sleeve (7); clamping holes (9) are evenly spaced along the circumferential direction on the transition shaft (8); a sliding hole (10) is opened along the circumferential direction on the end sleeve (7), and a positioning pin (11) is slidably connected inside the sliding hole (10); One end of the transition shaft (8) away from the pinch roller (6) is rotatably connected to a shaft sleeve (12); an oil injection hole (13) is opened on the shaft sleeve (12); a guiding hole (14) is opened along the circumferential direction on the shaft sleeve (12), and a push rod (16) is slidably connected inside the guiding hole (14); one end of the shaft sleeve (12) away from the transition shaft (8) is slidably connected to a slider (15); one side of the slider (15) is arranged as an inclined surface; one end of the push rod (16) contacts the inclined surface; one end of the slider (15) away from the transition shaft (8) is fixedly connected to a return spring (17), and the other end of the return spring (17) abuts against the inner wall of the shaft sleeve (12); A decorative cylinder (18) is sleeved outside the shaft sleeve (12); one end of the decorative cylinder (18) is fixedly connected to the shaft sleeve (12); a through hole is opened on the decorative cylinder (18), and the through hole is communicated with the oil injection hole (13) through a hose; One end of the push rod (16) away from the guiding hole (14) is provided with a first spring (19), one end of the first spring (19) is fixedly connected to the push rod (16), and the other end is fixedly connected to the decorative cylinder (18); One end of the positioning pin (11) away from the clamping hole (9) is provided with a second spring (20). One end of the second spring (20) is fixedly connected to the positioning pin (11), and the other end is fixedly connected to the decorative cylinder (18). A sliding sleeve (21) is slidably connected to the outside of the decorative cylinder (18). One end of the sliding sleeve (21) is fixedly connected with a first magnet (22) at equal intervals along the circumferential direction on the inner side. The other end of the sliding sleeve (21) is fixedly connected with a second magnet (23) at equal intervals along the circumferential direction on the inner side. The ejector rod (16) is made of a magnetic material, and the magnetic poles on the side of the ejector rod (16) opposite to the second magnet (23) are the same. The other end of the shaft sleeve (12) is fixedly connected to the frame body (1) through a bracket. Above the sliding sleeve (21), there is an oil injection assembly for injecting lubricating oil into the oil injection hole (13).

3. The large-angle belt pressing conveyor for coal mine operation with a belt pressing structure according to claim 2, characterized in that: The oil injection assembly includes a fixed frame (24), and the fixed frame (24) is fixedly connected to the frame body (1). The lower end of the fixed frame (24) is fixedly connected with an electric push rod (25), and the movable end of the electric push rod (25) is fixedly connected with an oil injection gun (26). One end of the shaft sleeve (12) is provided with an inclined portion. The oil injection gun (26) is provided with an oil injection nozzle (27) and an extrusion head (28). The extrusion head (28) is connected to the oil injection gun (26) through an elastic member (29), and the lower end of the extrusion head (28) is lower than the lower end of the oil injection nozzle (27). The extrusion head (28) is located above the inclined portion.

4. A steep-angle belt pressing type conveyor for coal mine operations with a belt pressing structure according to claim 3, characterized in that: On the opposite side surfaces of the conveyor belt (5), there are card slots (30). On the frame body (1), guide seats (31) are evenly spaced. The guide seats (31) are evenly spaced with grooves, and ball joints are provided with balls (32) in the grooves. The upper ends of the balls (32) are in contact with the card slots (30). The guide seats (31) are of an arc-shaped structure.

5. The large-angle belt pressing type conveyor for coal mine operation with a belt pressing structure according to claim 4, wherein: The deviation rectifying component includes a mounting plate (33). The mounting plate (33) is connected to the fixed frame (24). Below the mounting plate (33), extrusion cylinders (34) are symmetrically and fixedly connected. A push rod (35) is slidably connected inside the extrusion cylinder (34). The lower end of the push rod (35) is hinged with a pressing plate (36). A stop block (37) for limiting the rotation angle of the pressing plate (36) is arranged at the end of the push rod (35). On one side of the frame body (1) near the feeding position, a support frame (38) is fixedly connected. On the support frame (38), a movable seat (39) is provided. The movable seat (39) is slidably connected to the support frame (38). The ball joint on the movable seat (39) is in contact with the card slot (30) on the conveyor belt (5). The lower part of the support frame (38) is fixedly connected with a piston cylinder (40). A piston rod (41) is slidably connected inside the piston cylinder (40). One end of the piston rod (41) is clamped with a clamping seat at the lower part of the movable seat (39). An electromagnetic valve (42) is provided on the frame body (1). The piston cylinder (40) is communicated with an inlet of the electromagnetic valve (42) through a pipeline. The other inlet of the electromagnetic valve (42) is communicated with an external hydraulic device. The outlet of the electromagnetic valve (42) is communicated with the inside of the extrusion cylinder (34) through a pipeline.

6. The large-angle belt pressing conveyor for coal mine operation with a belt pressing structure according to claim 5, wherein: A horizontal moving assembly (43) for driving the pressure plate (36) to move along the moving direction of the conveyor belt (5) is provided between the mounting plate (33) and the fixing frame (24). A speed measuring assembly is provided on the frame body (1) for measuring the conveying speed of the conveyor belt (5).

7. A large - inclination belt - pressing conveyor for coal mine operations with a belt - pressing structure according to claim 6, characterized in that: The conveyor belt (5) includes a steel wire rope core layer (44) and surface layers (45) coated on both sides of the steel wire rope core layer (44). Loosely woven parts (46) are arranged on both sides of the steel wire rope core layer (44) along the belt length direction, and the remaining parts are densely woven parts (47). The number of transverse steel wires in the loosely woven parts (46) does not exceed 1 / 3 of the number of transverse steel wires in the densely woven parts (47).

8. The large-angle belt pressing conveyor for coal mine operation with a belt pressing structure according to claim 7, characterized in that: A hot melt layer (48) is provided between the steel wire rope core layer (44) and the surface layer (45) of the conveyor belt (5). The melting temperature of the hot melt layer (48) is lower than the melting temperature of the surface layer (45).

9. The large-angle belt pressing type conveyor for coal mine operation with a belt pressing structure according to claim 5, wherein: The edge of the pressure plate (36) has a warped structure (49), and the pressure plate (36) is higher on the material receiving side than on the material discharging side.

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