Adjustable slag feeding device of open-type TBM slag receiving hopper

Abstract

The invention belongs to the technical field of tunneling equipment, and particularly relates to an adjustable slag feeding device of an open-type TBM slag receiving hopper. The outer wall of the hopper main body is fixedly connected with a servo motor; the output end of the servo motor is fixedly connected with a rotating rod, and the rotating rod is rotationally connected into the hopper body. A first flow guide plate is fixedly connected to the outer wall of the rotating rod. By means of deformation of the hopper body and flexible adjustment of the discharging opening, the slag discharging requirements under different geological conditions can be met, the slag discharging hopper is particularly suitable for the scene that a large amount of slag is transported in the tunnel excavation process, when hard rock stratum is rapidly tunneled, the servo motor drives the rotating rod to rotate reversely, the first flow guide plate is attached to the inner wall of the hopper, and therefore the discharging opening is expanded, and the slag discharging effect is improved. The slag discharging speed is increased, and slag accumulation is reduced; and when large-particle slag charge is encountered in unfavorable geology, the discharging control of the total amount of the slag charge is realized through the matched discharging of the guide plate and the extension assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of tunneling equipment, in particular to an open TBM slag hopper with an adjustable slag feeding device. Background Art

[0002] An open-type TBM is a heavy-duty mechanical equipment used for tunnel excavation. The slag hopper of an open-type TBM is a key component used to collect and transport rock debris crushed by the cutterhead. The slag hopper is an important component of the open-type TBM, ensuring the efficient collection and transportation of rock debris, which directly affects construction efficiency and equipment life.

[0003] A Chinese patent with announcement number CN217400904U discloses a TBM slag discharge device for use in water-rich strata, including a collecting hopper arranged at the rear side of the TBM cutterhead and a scraper conveyor arranged below the collecting hopper; the scraper conveyor includes a conveying mechanism and a discharge hopper arranged at the end of the conveying mechanism; this application can achieve slag-water separation and adjust the slag transportation volume through the scraper conveyor set up. Excess slag can overflow into the cutterhead, ensuring that the slag amount on the main machine belt conveyor is evenly distributed, avoiding overloading of the main machine belt conveyor and belt deviation.

[0004] When using an open TBM for tunnel excavation, although the above-mentioned TBM adjusts the conveying volume of slag by setting a scraper conveyor under the receiving hopper to reduce belt conveyor overload and belt deviation, it is difficult for the above-mentioned TBM to change the discharge diameter inside the slag receiving hopper when rapidly excavating through hard rock formations and the discharge volume is large, resulting in a large amount of slag falling from the fully opened hopper discharge port onto the belt conveyor, which can easily cause slag accumulation or even overload and stop the belt conveyor.

[0005] To this end, the present invention provides an adjustable slag feeding device for an open TBM slag hopper. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the open TBM slag hopper adjustable slag feeding device described in the present invention includes a hopper body; the outer wall of the hopper body is fixedly connected to a servo motor; the output end of the servo motor is fixedly connected to a rotating rod, and the rotating rod is rotatably connected to the inside of the hopper body; the outer wall of the rotating rod is fixedly connected to a No. 1 guide plate; the top of the hopper body is provided with a bell mouth; the interior of the No. 1 guide plate is provided with an extension component, and the extension component is used to assist in adjusting the diversion of the slag at the No. 1 guide plate; a No. 1 belt conveyor is installed at the bottom of the hopper body.

[0008] Preferably, the extension assembly includes an electric push rod and a No. 2 guide plate; the electric push rod is fixedly connected to the inside of the No. 1 guide plate; the No. 2 guide plate is fixedly connected to the output end of the electric push rod; the outer wall of one end of the No. 1 guide plate close to the No. 2 guide plate is inclined.

[0009] Preferably, a temporary storage chamber is provided inside the hopper body and on a side away from the No. 1 guide plate; a side slider is slidably connected to the inner wall of the hopper body near the temporary storage chamber; a guide plate is fixedly connected to the outer wall of the side slider, and the guide plate is slidably connected to the inner wall of the hopper body; a transmission assembly is provided on the outer wall of the rotating rod, and the transmission assembly is used to drive the guide plate to slide when the rotating rod rotates; a sealing assembly is provided inside the hopper body and at the bottom of the temporary storage chamber, and the sealing assembly is used to control the blocking of the bottom of the temporary storage chamber; a No. 2 belt conveyor is installed at the bottom of the hopper body and below the temporary storage chamber, and the No. 2 belt conveyor is located above the No. 1 belt conveyor.

[0010] Preferably, the transmission assembly includes a winding wheel, a guide wheel and a pull rope; the winding wheel is fixed to the outer wall of the rotating rod; the guide wheel is rotatably connected to the outer wall of the hopper body; the two ends of the pull rope are respectively connected to the side slider and the winding wheel, and the middle part of the pull rope is located on the guide wheel.

[0011] Preferably, the blocking assembly includes a guide plate, a fixing frame, a No. 1 filter plate, an electric slider and a blocking plate; the guide plate is fixed to the inner wall of the temporary storage chamber, and the upper surface of the guide plate is inclined; the fixing frame is fixed to the bottom end of the hopper body, and the fixing frame is located at the bottom position of the temporary storage chamber; the No. 1 filter plate is fixed to the fixing frame, the No. 1 filter plate is inclined, and the No. 1 filter plate and the guide plate are staggered; the electric slider is slidably connected to the bottom of the guide plate; the blocking plate is fixed to the bottom end of the electric slider.

[0012] Preferably, a No. 2 filter plate is fixedly connected to the interior of the hopper body, and the No. 2 filter plate is arranged at an angle; and a fence plate is fixedly connected to the bottom end of the hopper body.

[0013] Preferably, the middle inner wall of the hopper body is slidably connected to a sliding frame; a plurality of needling rods are fixed to the sliding frame, and the plurality of needling rods are arranged corresponding to the plurality of holes on the No. 2 filter plate; an extrusion assembly is provided inside the hopper body, and the extrusion assembly is used to drive the sliding frame to slide when the guide plate slides.

[0014] Preferably, the extrusion assembly includes a No. 1 hydraulic cylinder, a No. 2 hydraulic cylinder, a connecting pipe and an extrusion plate; the No. 1 hydraulic cylinder is fixed to the middle inner wall of the hopper body; the No. 2 hydraulic cylinder is fixed to the inside of the hopper body, and the output end of the No. 2 hydraulic cylinder is fixed to the bottom of the sliding frame; the connecting pipe is fixed between the No. 1 hydraulic cylinder and the No. 2 hydraulic cylinder; the extrusion plate is fixed to the bottom of the guide plate.

[0015] Preferably, a scraper plate is fixedly connected to the bottom end of the hopper body; the scraper plate is located at the bottom end of the middle part of the hopper body, and a trapezoidal opening is provided on the side of the scraper plate close to the No. 1 guide plate.

[0016] Preferably, the diameter of the needle rod is half of the diameter of the hole of the No. 2 filter plate; and the sliding frame is hollowed out.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The adjustable slag feeding device of an open TBM slag hopper described in the present invention can adapt to the slag discharge needs under different geological conditions through the deformation of the hopper body and the flexible adjustment of the discharge port. It is particularly suitable for the scenario of transporting large amounts of slag during tunnel excavation. When rapidly excavating in hard rock formations, the servo motor drives the rotating rod to rotate in the opposite direction, so that the No. 1 guide plate fits the inner wall of the hopper, thereby expanding the discharge port, accelerating the slag discharge speed, and reducing slag accumulation. When encountering large-particle slag in unfavorable geological conditions, the guide plate and the extension component are used to coordinate the discharge to achieve the discharge control of the total amount of slag.

[0019] 2. The adjustable slag feeding device of an open TBM slag hopper described in the present invention realizes efficient linkage between the slag hopper and the belt conveyor through the coordinated work of multiple closed components, avoiding the problem of belt conveyor blockage caused by uneven slag discharge in traditional equipment. The movement of each component in the system is mostly uniformly controlled by a servo motor to ensure the synchronization and reliability of the action, thereby improving the overall operation efficiency and transportation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the No. 2 belt conveyor in the present invention.

[0023] Figure 3 It is a partial structural cross-sectional view of the hopper body in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the No. 2 guide plate in the present invention;

[0025] Figure 5 Schematic diagram of the structure of the acupuncture rod in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the No. 1 filter plate in the present invention.

[0027] In the figure: 1. Hopper body; 11. Servo motor; 12. Rotating rod; 13. Guide plate No. 1; 14. Belt conveyor No. 1; 2. Electric push rod; 21. Guide plate No. 2; 3. Temporary storage chamber; 31. Drain plate; 32. Side slide block; 33. Belt conveyor No. 2; 4. Winding wheel; 41. Guide wheel; 42. Pull rope; 5. Guide plate; 51. Fixed frame; 52. Filter plate No. 1; 53. Electric slide block; 54. Sealing plate; 6. Filter plate No. 2; 61. Fence plate; 7. Sliding frame; 71. Needling rod; 8. Hydraulic cylinder No. 1; 81. Hydraulic cylinder No. 2; 82. Connecting pipe; 83. Extrusion plate; 9. Scraper plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figures 1 to 4As shown, an open TBM slag hopper adjustable slag feeding device according to an embodiment of the present invention comprises a hopper body 1; a servo motor 11 is fixedly connected to the outer wall of the hopper body 1; a rotating rod 12 is fixedly connected to the output end of the servo motor 11, and the rotating rod 12 is rotatably connected to the interior of the hopper body 1; a No. 1 guide plate 13 is fixedly connected to the outer wall of the rotating rod 12; a bell mouth is provided at the top of the hopper body 1; an extension component is provided inside the No. 1 guide plate 13, and the extension component is used to assist in adjusting the diversion of the slag at the No. 1 guide plate 13; the hopper body 1 is installed at the bottom of the hopper body 1. When using an open TBM for tunnel excavation, the hopper body 1 is installed near the cutterhead for receiving slag and unloading. In addition, a No. 1 belt conveyor 14 is installed at the bottom of the hopper body 1 for conveying slag. The initial position of the No. 1 guide plate 13 is tilted, and the No. 1 guide plate 13 cooperates with the extension component to block two-thirds of the discharge port of the hopper body 1, which is used for slag discharge in common good geological conditions. When the TBM quickly excavates through hard rock formations and causes a large amount of slag discharge, the output end of the servo motor 11 drives the rotating rod 12 to rotate in the opposite direction, rotating The rod 12 drives the No. 1 guide plate 13 and the extension assembly to rotate and fit vertically to the inner wall of the hopper body 1. At this time, the discharge port inside the hopper body 1 is adjusted to the maximum, and then the cutter disc cuts the slag and enters the interior of the hopper body 1 from the bell mouth. The hopper body 1 guides the crushed slag to the No. 1 belt conveyor 14 for transportation. By fully opening the discharge port inside the hopper body 1, the slag discharge is accelerated, and the accumulation and blockage of slag inside the hopper body 1 is reduced. When the TBM passes through a poor geological zone, the amount of slag increases and there is a risk of stopping the slag conveyor. The No. 1 guide plate 13 is adjusted with the extension assembly. The component rotates to block the discharge port of one-half of the hopper body 1. This controlled and blocked discharge method replaces the traditional fully open direct discharge method, so that the slag falls more smoothly on the No. 1 belt conveyor 14 for discharge, and reduces the situation where the slag discharge volume is too large and exceeds the load of the No. 1 belt conveyor 14, causing the No. 1 belt conveyor 14 to stop. By adjusting and blocking the inside of the hopper body 1, the discharge diameter inside the slag receiving hopper can be flexibly changed according to different geological conditions, ensuring that the discharged slag is within the load that the No. 1 belt conveyor 14 can bear, and reducing the situation where slag accumulates and blocks the hopper body 1.

[0030] The extension assembly includes an electric push rod 2 and a No. 2 guide plate 21; the electric push rod 2 is fixedly connected to the inside of the No. 1 guide plate 13; the No. 2 guide plate 21 is fixedly connected to the output end of the electric push rod 2; the outer wall of one end of the No. 1 guide plate 13 close to the No. 2 guide plate 21 is inclined; when the discharge diameter of the hopper body 1 is adjusted, the No. 1 guide plate 13 is greatly adjusted in angle as the rotating rod 12 rotates to control and block the discharge diameter of the hopper body 1. At this time, the discharge opening is still large, and the output end of the electric push rod 2 is controlled to drive the No. 2 guide plate 21 to extend. The length of the No. 1 guide plate 13 and the No. 2 guide plate 21 can partially block the larger discharge port, thereby improving the control effect of the discharge of the material at the discharge port. At the same time, because the No. 2 guide plate 21 is located at the front end of the discharge compared to the No. 1 guide plate 13, slag will adhere to the surface of the No. 2 guide plate 21 for a long time. At this time, the output end of the electric push rod 2 drives the No. 2 guide plate 21 to retract into the interior of the No. 1 guide plate 13, and the front end inclined outer wall of the No. 1 guide plate 13 can scrape the surface of the No. 2 guide plate 21, thereby reducing the slag adhesion on the surface of the No. 2 guide plate 21.

[0031] like Figures 1 to 4 、 Figure 6 As shown, a temporary storage chamber 3 is provided inside the hopper body 1 and on a side away from the No. 1 guide plate 13; a side slider 32 is slidably connected to the inner wall of the hopper body 1 near the temporary storage chamber 3; the outer wall of the side slider 32 is fixedly connected to the guide plate 31, and the guide plate 31 is slidably connected to the inner wall of the hopper body 1; the outer wall of the rotating rod 12 is provided with a transmission assembly, which is used to drive the guide plate 31 to slide when the rotating rod 12 rotates; a blocking assembly is provided inside the hopper body 1 and at the bottom of the temporary storage chamber 3, and the blocking assembly is used to control the blocking of the bottom of the temporary storage chamber 3; a No. 2 belt conveyor 33 is installed at the bottom of the hopper body 1 and below the temporary storage chamber 3, and the No. 2 belt conveyor 33 is located above the No. 1 belt conveyor 14; when a large amount of slag is generated during tunnel excavation by the open TBM, the temporary storage chamber 3 is opened inside the hopper body 1 to form an auxiliary material storage When the slag material stored in the temporary storage chamber 3 reaches half of the storage space, the No. 2 belt conveyor 33 starts to operate, and the No. 1 belt conveyor 14 and the No. 2 belt conveyor 33 respectively transport the slag material from the two discharge ports, open the blocking component in the temporary storage chamber 3 and control the discharge amount, so that the slag material in the temporary storage chamber 3 is placed on the No. 2 belt conveyor 33 for transportation, and the No. 2 belt conveyor 33 shares the load of the No. 1 belt conveyor 14, thereby reducing the occurrence of the pressure stop of the No. 1 belt conveyor 14 caused by excessive slag material.

[0032] When the guide plate 13 is rotated and tilted forward by the rotating rod 12, the reel 4 releases the pull rope 42, causing the guide plate 31 to slide down and return to its original position due to gravity, thereby pulling and sliding the guide plate 31.

[0033] The blocking assembly includes a guide plate 5, a fixing frame 51, a No. 1 filter plate 52, an electric slider 53 and a blocking plate 54; the guide plate 5 is fixed to the inner wall of the temporary storage chamber 3, and the upper surface of the guide plate 5 is inclined; the fixing frame 51 is fixed to the bottom end of the hopper body 1, and the fixing frame 51 is located at the bottom position of the temporary storage chamber 3; the No. 1 filter plate 52 is fixed to the fixing frame 51, the No. 1 filter plate 52 is inclined, and the No. 1 filter plate 52 and the guide plate 5 is staggered; the electric slider 53 is slidably connected to the bottom of the guide plate 5; the blocking plate 54 is fixed to the bottom end of the electric slider 53; when the guide plate 31 guides part of the slag into the interior of the temporary storage chamber 3, the electric slider 53 works to drive the blocking plate 54 to slide against the outer wall of the first filter plate 52, and the blocking plate 54 can block the discharge port of the temporary storage chamber 3. As the slag guided by the guide plate 31 slides onto the guide plate 5, it continues to slide along the inclined surface of the guide plate 5. The slag material that has been stored on the filter plate 52 of the first filter plate 52 is transported to the second conveyor belt 33 by sliding.

[0034] like Figure 1 、 Figure 2 、 Figure 3and Figure 5 As shown, the interior of the hopper body 1 is fixedly connected with a No. 2 filter plate 6, and the No. 2 filter plate 6 is set at an angle; the bottom end of the hopper body 1 is fixedly connected with a fence plate 61; when the hopper body 1 guides the slag to be discharged, some large particles of slag will fall directly for a long time, which may easily cause serious damage to the No. 1 belt conveyor 14. The No. 2 filter plate 6 is fixed to the inner wall of the hopper body 1 as a guide buffer. The large particles of slag falling on the No. 2 filter plate 6 will fall along its inclined surface onto the No. 1 belt conveyor 14, and the fence plate 61 is used to block the discharge of large particles of slag, reducing the large particles of slag flying onto the No. 1 belt conveyor 14. Small particles of slag can pass through the multiple holes of the No. 2 filter plate 6 and fall onto the No. 1 belt conveyor 14, reducing the impact of the slag on the No. 1 belt conveyor 14, and playing the role of slag buffering discharge.

[0035] The middle inner wall of the hopper body 1 is slidably connected to a sliding frame 7; a plurality of needling rods 71 are fixed to the sliding frame 7, and the plurality of needling rods 71 are arranged corresponding to the plurality of holes on the No. 2 filter plate 6; an extrusion assembly is provided inside the hopper body 1, and the extrusion assembly is used to drive the sliding frame 7 to slide when the guide plate 31 slides; after the No. 2 filter plate 6 has filtered and buffered the slag for a long time, part of the slag is easily blocked in the holes of the No. 2 filter plate 6, and the extrusion assembly is driven to move during the sliding of the guide plate 31, and the extrusion assembly synchronously drives the plurality of needling rods 71 on the sliding frame 7 to slide up, and the plurality of needling rods 71 respectively poke the plurality of holes of the No. 2 filter plate 6, thereby causing the slag on the holes of the No. 2 filter plate 6 to fall off, and the needling rods 71 can also be replaced with short rods of the same size as the aperture of the No. 2 filter plate 6 to ensure the filtering and buffering effect of the No. 2 filter plate 6.

[0036] The extrusion assembly includes a No. 1 hydraulic cylinder 8, a No. 2 hydraulic cylinder 81, a connecting pipe 82 and an extrusion plate 83; the No. 1 hydraulic cylinder 8 is fixed to the middle inner wall of the hopper body 1; the No. 2 hydraulic cylinder 81 is fixed to the inside of the hopper body 1, and the output end of the No. 2 hydraulic cylinder 81 is fixed to the bottom of the sliding frame 7; the connecting pipe 82 is fixed between the No. 1 hydraulic cylinder 8 and the No. 2 hydraulic cylinder 81; the extrusion plate 83 is fixed to the bottom of the guide plate 31; when multiple needle rods 71 are used to remove the slag in the holes of the No. 2 filter plate 6, The guide plate 31 drives the extrusion plate 83 to slide and squeeze the output end of the No. 1 hydraulic cylinder 8. The hydraulic oil inside the No. 1 hydraulic cylinder 8 is transported to the No. 2 hydraulic cylinder 81 through the connecting pipe 82. The output end of the No. 2 hydraulic cylinder 81 lifts the sliding frame 7 to slide, and multiple needle rods 71 poke into the holes of the No. 2 filter plate 6 to remove the slag. When the guide plate 31 drives the extrusion plate 83 away from the No. 1 hydraulic cylinder 8, the sliding frame 7 slides down by gravity to squeeze the hydraulic oil in the No. 2 hydraulic cylinder 81 back to the inside of the No. 1 hydraulic cylinder 8, thereby transmitting the sliding frame 7.

[0037] like Figures 1 to 3As shown, a scraper plate 9 is fixed to the bottom end of the hopper body 1; the scraper plate 9 is located at the middle bottom end of the hopper body 1, and a trapezoidal opening is opened on the scraper plate 9 close to the side of the guide plate 13; when the slag falls from the hopper body 1, part of the slag falls and easily causes accumulation, and the scraper plate 9 is fixed to the middle of the bottom end of the hopper body 1. As a large amount of slag falls on the No. 1 belt conveyor 14 for transportation, the scraper plate 9 is placed above the No. 1 belt conveyor 14, and there is a conveying gap between the No. 1 belt conveyor 14 and the scraper plate 9. The excessively accumulated slag is scraped by the trapezoidal opening of the scraper plate 9, so that the conveyed slag is scraped evenly, thereby improving the conveying effect of the slag and reducing the burden of the slag accumulation on the No. 1 belt conveyor 14.

[0038] like Figures 1 to 3 and Figure 5 As shown, the diameter of the piercing rod 71 is half the diameter of the hole of the No. 2 filter plate 6; the sliding frame 7 is hollowed out; when a large amount of slag falls on the No. 2 filter plate 6 for filtration, part of the slag is likely to clog the holes of the No. 2 filter plate 6, and the piercing rod 71 with a diameter half the diameter of the hole of the No. 2 filter plate 6 can smoothly poke the clogged slag, and the slag falls along the surface of the No. 2 filter plate 6, or flows through the hollow sliding frame 7 along the holes of the No. 2 filter plate 6, thereby assisting the slag that clogs the holes of the No. 2 filter plate 6 to fall.

[0039] Working process: When using an open TBM for tunnel excavation, the hopper body 1 is installed near the cutterhead for receiving slag and unloading. In addition, a No. 1 belt conveyor 14 is installed at the bottom of the hopper body 1 for conveying slag. The initial position of the No. 1 guide plate 13 is tilted, and the No. 1 guide plate 13 cooperates with the extension component to block two-thirds of the discharge port of the hopper body 1, which is used for slag discharge in common good geological conditions. When the TBM quickly advances through hard rock formations and causes a large amount of slag discharge, the output end of the servo motor 11 drives the rotating rod 12 to rotate in the opposite direction, and the rotating rod 12 drives the No. 1 guide plate 13 and the extension component to rotate and fit vertically to the inner wall of the hopper body 1. At this time The discharge port inside the hopper body 1 is adjusted to the maximum, and then the cutter disc cuts the slag and enters the inside of the hopper body 1 from the bell mouth, and the hopper body 1 guides the crushed slag to the No. 1 belt conveyor 14 for transportation. By fully opening the discharge port inside the hopper body 1, this controlled and blocked discharge method replaces the traditional fully open direct discharge method, so that the slag falls more smoothly on the No. 1 belt conveyor 14 for discharge, and reduces the situation where the slag discharge volume exceeds the load of the No. 1 belt conveyor 14 and causes the No. 1 belt conveyor 14 to stop. By adjusting and blocking the inside of the hopper body 1, the discharge port inside the slag receiving hopper can be flexibly changed according to different geological conditions to ensure the discharge of slag. Within the load that the No. 1 belt conveyor 14 can withstand, the occurrence of slag accumulation and clogging of the hopper body 1 is reduced; when the TBM passes through a poor geological zone, the amount of slag increases and is accompanied by the risk of the slag belt being pressed and stopped, the No. 1 guide plate 13 is rotated in conjunction with the extension component to block half of the discharge port of the hopper body 1, so that the slag is discharged smoothly, and the occurrence of the belt being pressed and stopped due to excessive slag discharge is reduced, which plays a role in flexibly changing the discharge diameter inside the slag receiving hopper according to different geological conditions, and reducing the occurrence of slag accumulation and clogging of the hopper body 1; when the discharge diameter of the hopper body 1 is adjusted, the No. 1 guide plate 13 is adjusted to a large extent along with the rotation of the rotating rod 12 to adjust the angle of the hopper body 1 The material discharge port is controlled and blocked. At this time, the material discharge port is still large, and the output end of the control electric push rod 2 drives the No. 2 guide plate 21 to extend. The No. 1 guide plate 13 cooperates with the length of the No. 2 guide plate 21 to partially block the larger material discharge port, thereby improving the control effect of material discharge from the material discharge port. At the same time, because the No. 2 guide plate 21 is located at the front end position of the material discharge compared to the No. 1 guide plate 13, slag will adhere to the surface of the No. 2 guide plate 21 for a long time. At this time, the output end of the electric push rod 2 drives the No. 2 guide plate 21 to retract into the interior of the No. 1 guide plate 13, and the front end inclined outer wall of the No. 1 guide plate 13 can scrape the surface of the No. 2 guide plate 21, thereby reducing the slag adhesion on the surface of the No. 2 guide plate 21;

[0040] When a large amount of slag is generated during tunnel excavation by an open TBM, a temporary storage chamber 3 is opened inside the hopper body 1 to form an auxiliary storage area. As the output end of the servo motor 11 drives the rotating rod 12 to rotate in the opposite direction, the No. 1 guide plate 13 is perpendicular to the inner wall of the hopper body 1, and the rotating rod 12 drives the guide plate 31 to slide out of the temporary storage chamber 3 through the transmission component. The slag discharged into the interior of the hopper body 1 slides along the surface of the guide plate 31 and is temporarily stored in the temporary storage chamber 3. The blocking component temporarily blocks the internal slag of the temporary storage chamber 3 to reduce the amount of slag discharged. When the slag stored in the temporary storage chamber 3 reaches half of the storage space, the No. 2 belt conveyor 33 starts to operate, and the No. 1 belt conveyor 14 and the No. 2 belt conveyor 33 respectively transport the slag from the two discharge ports, open the blocking component in the temporary storage chamber 3 and control The material discharge amount makes the slag in the temporary storage chamber 3 be placed on the second belt conveyor 33 for transportation, and the load borne by the second belt conveyor 33 is shared by the first belt conveyor 14, thereby reducing the situation that the first belt conveyor 14 is pressed and stopped due to excessive slag; when the guide plate 31 is pulled and slid, as the rotating rod 12 drives the first guide plate 13 to rotate in the opposite direction to fit the inner wall of the hopper body 1, the reel-up wheel 4 reels the pull rope 42, and the pull rope 42 is placed on the guide wheel 41 to pull the guide plate 31 connected to the side slider 32 to slide, so that the guide plate 31 slides out of the internal part of the temporary storage chamber 3 to guide the material into the interior of the temporary storage chamber 3. When the rotating rod 12 drives the first guide plate 13 to rotate forward and tilt, the reel-up wheel 4 releases the pull rope 42, so that the guide plate 31 slides down and resets due to gravity, thereby pulling and sliding the guide plate 31;

[0041] After the guide plate 31 guides part of the slag into the interior of the temporary storage chamber 3, the electric slider 53 works to drive the blocking plate 54 to slide against the outer wall of the No. 1 filter plate 52, and the blocking plate 54 can block the discharge port of the temporary storage chamber 3. As the slag guided by the guide plate 31 slides onto the guide plate 5, it continues to slide along the inclined surface of the guide plate 5 to the surface of the No. 1 filter plate 52 supported on the fixed frame 51 for temporary storage. Some small particles of crushed slag can pass through the No. 1 filter plate 52 and fall onto the No. 2 belt conveyor 33 for transportation, and large particles of slag are temporarily stored on the No. 1 filter plate 52. When the slag falls less, the electric slider 53 is used to drive the blocking plate 54 to slide. Leaving the outer wall of the No. 1 filter plate 52, the large particles of slag temporarily stored on the No. 1 filter plate 52 fall along its inclined surface to be transported to the No. 2 belt conveyor 33, reducing the load of the No. 2 belt conveyor 33, and playing the role of controlling and blocking the bottom of the temporary storage chamber 3. At the same time, the No. 2 belt conveyor 33 can run synchronously with the No. 1 belt conveyor 14, and the blocking plate 54 slides to adjust the size of the discharge opening at the No. 1 filter plate 52, thereby controlling the falling speed of the slag in the temporary storage chamber 3 and reducing the load of the No. 2 belt conveyor 33. In addition, the guide plate 5 cooperates with the No. 1 filter plate 52 to cushion the falling of the slag, reducing the impact of the slag on the No. 2 belt conveyor 33.

[0042] When the hopper body 1 guides the slag material to be discharged, some large particles of slag material will fall directly for a long time, which may cause serious damage to the No. 1 belt conveyor 14. The No. 2 filter plate 6 is fixed to the inner wall of the hopper body 1 as a guide buffer. The large particles of slag material falling on the No. 2 filter plate 6 will fall along its inclined surface onto the No. 1 belt conveyor 14. The fence plate 61 is used to block the discharge of large particles of slag material, reducing the large particles of slag material from flying onto the No. 1 belt conveyor 14. Small particles of slag material can pass through the multiple holes of the No. 2 filter plate 6 and fall onto the No. 1 belt conveyor 14, reducing the impact of the slag material on the No. 1 belt conveyor The degree of impact of the belt conveyor 14 plays the role of buffering the discharge of slag; after the No. 2 filter plate 6 has filtered and buffered the slag for a long time, some slag is easily blocked in the holes of the No. 2 filter plate 6, and the extrusion assembly is driven to move during the sliding of the drainage plate 31. The extrusion assembly synchronously drives the multiple puncture rods 71 on the sliding frame 7 to slide up, and the multiple puncture rods 71 correspond to the multiple holes of the No. 2 filter plate 6 respectively, so that the slag on the holes of the No. 2 filter plate 6 falls off, and the puncture rods 71 can also be replaced with short rods with the same size as the aperture of the No. 2 filter plate 6. When the drain plate 31 drives the squeezing plate 83 to slide and squeeze the output end of the No. 1 hydraulic cylinder 8, the hydraulic oil in the No. 1 hydraulic cylinder 8 is transported to the No. 2 hydraulic cylinder 81 through the connecting pipe 82. The output end of the No. 2 hydraulic cylinder 81 lifts the sliding frame 7 to slide, and the multiple needle rods 71 poke into the holes of the No. 2 filter plate 6 to remove the slag. When the drain plate 31 drives the squeezing plate 83 away from the No. 1 hydraulic cylinder 8, the sliding frame 7 is lowered by gravity. The hydraulic oil in the No. 2 hydraulic cylinder 81 is slidably squeezed back to the inside of the No. 1 hydraulic cylinder 8, which plays a role in transmitting the sliding frame 7; when a large amount of slag falls on the No. 2 filter plate 6 for filtration, some of the slag is likely to clog the holes of the No. 2 filter plate 6, and the piercing rod 71 with a diameter half the diameter of the holes of the No. 2 filter plate 6 can smoothly poke the clogged slag, and the slag falls along the surface of the No. 2 filter plate 6, or passes through the hollow sliding frame 7 along the holes of the No. 2 filter plate 6, thereby assisting the slag that clogs the holes of the No. 2 filter plate 6 to fall;

[0043] When the slag falls from the hopper body 1, some of the falling slag is likely to cause accumulation. A scraper plate 9 is fixed at the middle of the bottom end of the hopper body 1. As a large amount of slag falls on the No. 1 belt conveyor 14 for transportation, the scraper plate 9 is placed above the No. 1 belt conveyor 14, and there is a conveying gap between the No. 1 belt conveyor 14 and the scraper plate 9. The excessively accumulated slag is scraped by the trapezoidal opening of the scraper plate 9, so that the conveyed slag is scraped evenly, thereby improving the conveying effect of the slag and reducing the burden of the slag accumulation on the No. 1 belt conveyor 14.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable slag feeding device for an open TBM slag hopper, characterized by: The invention comprises a hopper body (1); a servo motor (11) is fixedly connected to the outer wall of the hopper body (1); a rotating rod (12) is fixedly connected to the output end of the servo motor (11), and the rotating rod (12) is rotatably connected to the inside of the hopper body (1); a first guide plate (13) is fixedly connected to the outer wall of the rotating rod (12); a bell mouth is provided at the top of the hopper body (1); an extension component is provided inside the first guide plate (13), and the extension component is used to assist in adjusting the diversion of slag at the first guide plate (13); and a first belt conveyor (14) is installed at the bottom of the hopper body (1).

2. The adjustable slag feeding device for an open TBM slag hopper according to claim 1, characterized in that: The extension assembly comprises an electric push rod (2) and a second guide plate (21); the electric push rod (2) is fixedly connected to the inside of the first guide plate (13); the second guide plate (21) is fixedly connected to the output end of the electric push rod (2); and the outer wall of one end of the first guide plate (13) close to the second guide plate (21) is inclined.

3. The adjustable slag feeding device for the open TBM slag hopper according to claim 1 is characterized by: A temporary storage chamber (3) is provided inside the hopper body (1) and on a side away from the first guide plate (13); a side slider (32) is slidably connected to the inner wall of the hopper body (1) near the temporary storage chamber (3); a guide plate (31) is fixedly connected to the outer wall of the side slider (32), and the guide plate (31) is slidably connected to the inner wall of the hopper body (1); a transmission assembly is provided on the outer wall of the rotating rod (12), and the transmission assembly is used to drive the guide plate (31) to slide when the rotating rod (12) rotates; a blocking assembly is provided inside the hopper body (1) and at the bottom of the temporary storage chamber (3), and the blocking assembly is used to control the blocking of the bottom of the temporary storage chamber (3); a second belt conveyor (33) is installed at the bottom of the hopper body (1) and below the temporary storage chamber (3), and the second belt conveyor (33) is located above the first belt conveyor (14).

4. The adjustable slag feeding device for the open TBM slag hopper according to claim 3 is characterized by: The transmission assembly includes a reel (4), a guide wheel (41) and a pull rope (42); the reel (4) is fixed to the outer wall of the rotating rod (12); the guide wheel (41) is rotatably connected to the outer wall of the hopper body (1); the two ends of the pull rope (42) are respectively connected to the side slider (32) and the reel (4), and the middle part of the pull rope (42) is located on the guide wheel (41).

5. The adjustable slag feeding device for the open TBM slag hopper according to claim 3 is characterized by: The blocking assembly comprises a guide plate (5), a fixing frame (51), a first filter plate (52), an electric slider (53) and a blocking plate (54); the guide plate (5) is fixed to the inner wall of the temporary storage chamber (3), and the upper surface of the guide plate (5) is inclined; the fixing frame (51) is fixed to the bottom end of the hopper body (1), and the fixing frame (51) is located at the bottom position of the temporary storage chamber (3); the first filter plate (52) is fixed to the fixing frame (51), the first filter plate (52) is inclined, and the first filter plate (52) and the guide plate (5) are staggered; the electric slider (53) is slidably connected to the bottom of the guide plate (5); and the blocking plate (54) is fixed to the bottom end of the electric slider (53).

6. The adjustable slag feeding device for the open TBM slag hopper according to claim 3, characterized in that: A No. 2 filter plate (6) is fixedly connected to the interior of the hopper body (1), and the No. 2 filter plate (6) is arranged obliquely; a fence plate (61) is fixedly connected to the bottom end of the hopper body (1).

7. The adjustable slag feeding device for the open TBM slag hopper according to claim 6, characterized in that: The middle inner wall of the hopper body (1) is slidably connected to a sliding frame (7); a plurality of acupuncture rods (71) are fixedly connected to the sliding frame (7), and the plurality of acupuncture rods (71) are arranged corresponding to the plurality of holes on the second filter plate (6); an extrusion component is arranged inside the hopper body (1), and the extrusion component is used to drive the sliding frame (7) to slide when the guide plate (31) slides.

8. The adjustable slag feeding device for the open TBM slag hopper according to claim 7, characterized in that: The extrusion assembly comprises a No. 1 hydraulic cylinder (8), a No. 2 hydraulic cylinder (81), a connecting pipe (82) and an extrusion plate (83); the No. 1 hydraulic cylinder (8) is fixedly connected to the middle inner wall of the hopper body (1); the No. 2 hydraulic cylinder (81) is fixedly connected to the inside of the hopper body (1), and the output end of the No. 2 hydraulic cylinder (81) is fixedly connected to the bottom of the sliding frame (7); the connecting pipe (82) is fixedly connected between the No. 1 hydraulic cylinder (8) and the No. 2 hydraulic cylinder (81); and the extrusion plate (83) is fixedly connected to the bottom of the guide plate (31).

9. The adjustable slag feeding device for an open TBM slag hopper according to claim 1, characterized in that: A scraper plate (9) is fixedly connected to the bottom end of the hopper body (1); the scraper plate (9) is located at the middle bottom end of the hopper body (1), and a trapezoidal opening is provided on the side of the scraper plate (9) close to the first guide plate (13).

10. The adjustable slag feeding device for the open TBM slag hopper according to claim 7, characterized in that: The diameter of the needle rod (71) is half the diameter of the hole of the second filter plate (6); and the sliding frame (7) is hollowed out.

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