A high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt

Abstract

The present invention discloses a high-efficiency intelligent suspension transport processing high-temperature resistant conveyor belt, which relates to the field of transport technology. The high-efficiency intelligent suspension transport processing high-temperature resistant conveyor belt comprises a transport frame, the outer wall of the transport frame is fixedly connected with a suspension connecting plate, the outer wall of the transport frame is fixedly connected with a transport motor, and the transport frame is internally movably connected with two rollers, one of which is fixedly connected with the output shaft of the transport motor. The high-efficiency intelligent suspension transport processing high-temperature resistant conveyor belt drives the rotating rod to rotate around the rotating frame by rotating the rotating frame, so that the raised blocks on the surface of the rotating rod will bend against the conveyor belt, and the bending will tear the adhered coal attached to the surface of the conveyor belt, making it easy to fall off, so that the sweeping brush continuously sweeps the surface of the conveyor belt, and cooperates with the continuous impact of the impact ball to remove the adhered matter from the surface, which can increase the transportation efficiency of the conveyor belt.

Description

Technical Field

[0001] The invention relates to the field of transportation technology, and in particular to a high-efficiency intelligent suspension transportation processing high-temperature resistant conveyor belt. Background Art

[0002] After the initial processing of coal such as washing, if the heat of the coal accumulates, the conveyor belt may be in a high temperature environment, and the ordinary conveyor belt will be damaged. The high temperature resistant conveyor belt can adapt to the high temperature scene in coal transportation. Its special material and structure can resist the adverse effects of high temperature and ensure the efficiency and safety of coal transportation. The Chinese patent with publication number CN105775589A discloses a high temperature resistant conveyor belt, which comprises a skeleton layer, the skeleton layer is a high temperature resistant canvas, the high temperature resistant canvas is provided with a covering layer on both sides, the covering layer is EPDM rubber, the EPDM rubber is provided with a buffer layer, the buffer layer is a nylon polyester mesh cloth; In the process of transporting coal on the conveyor belt, some small coal fragments and coal powder will adhere to the surface of the conveyor belt. After a long period of use, the increase of attachments will increase the transmission load and the load of the conveyor belt, thereby reducing the transportation efficiency of the conveyor belt. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a high-efficiency, intelligent, suspended, transported and processed high-temperature resistant conveyor belt to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an efficient and intelligent suspended transportation and processing high-temperature resistant conveyor belt, comprising a transport frame, the outer wall of the transport frame is fixedly connected with a suspension connecting plate, the outer wall of the transport frame is fixedly connected with a transport motor, the interior of the transport frame is movably connected with two rollers, one of which is fixedly connected to the output shaft of the transport motor, a conveyor belt is arranged inside the transport frame, the transport motor can drive the conveyor belt by driving one of the rollers, a plurality of rollers are movably connected inside the transport frame, the rollers are located inside the conveyor belt, the top of the transport frame is located on the right side of the conveyor belt and is fixedly connected with a shaking mechanism, the outer wall of the conveyor belt is fixedly connected with a pushing assembly, and the interior of the transport frame is movably connected with a sweeping mechanism near the left side of the conveyor belt; The sweeping mechanism includes: A rotating frame, the rotating frame is movably connected to the inside of the transport frame, and the rotating frame is movably connected to the inside of the transport frame; A rotating rod, the rotating rod being movably connected to the outer side of the rotating frame; A protruding block, the protruding block is fixedly connected to the outer wall of the rotating rod; The second conveyor belt is movably connected to the protruding block, and the second conveyor belt is movably connected to the roller on the left side, and the roller drives the rotating frame to rotate through the second conveyor belt.

[0005] Preferably, the bottom of the transport frame is located on the left side of the rotating frame and is movably connected to a sweeping frame, a sweeping brush is provided on the outside of the sweeping frame, the outer wall of the sweeping frame is movably connected to a third conveyor belt, and the third conveyor belt is movably connected to the roller on the left side, and the roller will drive the sweeping frame to rotate through the third conveyor belt.

[0006] Preferably, a connecting rope is fixedly connected to the outer wall of the sweeping frame, and an impact ball is fixedly connected to the outer end of the connecting rope.

[0007] Preferably, the shaking mechanism includes an inclined plate, which is fixedly connected to the inside of the transport frame and located on the right side of the conveyor belt. A shaking plate is provided at the bottom of the inclined plate inside the transport frame. The outer wall of the shaking plate is located at the top of the conveyor belt and is movably connected to four rotating disks. One of the rotating disks has a movably connected first conveyor belt on its outer wall, and the first conveyor belt is movably connected to the roller on the right side. The roller will drive the corresponding first conveyor belt to rotate through the first conveyor belt, and a push bar is fixedly connected to the top of the shaking plate.

[0008] Preferably, the outer wall of the shaking plate is provided with screening holes, and the inside of the transport rack is fixedly connected with a discharge plate at the bottom of the hole corresponding to the shaking plate.

[0009] Preferably, the pushing assembly comprises a spring, the spring is fixedly connected to the outer wall of the conveyor belt, the top of the spring is fixedly connected to an arc plate, and the bottom of the arc plate is fixedly connected to a positioning column.

[0010] Preferably, a spring is provided on the inner side of the corresponding arc plate on the outer wall of the conveyor belt, a second limiting leg is fixedly connected to the side of the spring close to the conveyor belt, and the second limiting leg is movably connected to the inside of the conveyor belt, and the second cover plate covers the corresponding opening provided on the conveyor belt.

[0011] Preferably, a first cover plate is provided on the outer side of the arc plate, a first limit leg is fixedly connected to the first cover plate on one side close to the arc plate, and the first limit leg is movably connected to the inside of the arc plate, and the first cover plate covers the corresponding opening provided on the arc plate.

[0012] The present invention provides a high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt. It has the following beneficial effects: 1. The efficient and intelligent suspended transportation and processing high-temperature resistant conveyor belt drives the rotating rod to rotate around the rotating frame through the rotation of the rotating frame, so that the raised blocks on the surface of the rotating rod will press against the conveyor belt, causing the surface of the conveyor belt to bend. The bending will tear the adhered coal attached to the surface of the conveyor belt, making it easy to fall off, and the sweeping brush will continuously sweep the surface of the conveyor belt, and the impact ball will continuously impact to remove the adhered matter from the surface, which can increase the transportation efficiency of the conveyor belt.

[0013] 2. The efficient, intelligent, suspended, transported and processed high-temperature resistant conveyor belt can be swung back and forth by means of a swaying plate. The pushing bar on the top of the swaying plate can promote the swaying of the coal, causing the coal to disperse on the top of the swaying plate, and then allow the coal to fall onto the conveyor belt for transportation. This prevents the coal from being transported in a concentrated manner on the conveyor belt, causing excessive local pressure on the conveyor belt during transportation, which may result in damage to the equipment and indirectly improve the efficiency of transportation.

[0014] 3. This efficient, intelligent, suspended, transporting and processing high-temperature resistant conveyor belt, when the shaking plate is shaking with the coal on the top, will pass through the screening holes, allowing the fine coal on the coal to fall through the holes onto the discharge plate, and then slide out from the discharge plate, to prevent the fine coal from contacting and sticking to the conveyor belt, which can improve the efficiency of transportation.

[0015] 4. The efficient, intelligent, suspended, transported and processed high-temperature resistant conveyor belt can separate the coal through the arc plate, and simultaneously cooperate with the conveyor belt to push the coal for transportation, which can reduce the wear of the coal on the conveyor belt, increase the service life of the conveyor belt, reduce the transportation shutdown caused by the replacement of the conveyor belt, and indirectly improve the transportation efficiency.

[0016] 5. The efficient, intelligent, suspended, transported and processed high-temperature resistant conveyor belt can make the coal on the top of the shaking plate evenly distributed by shaking it on the shaking plate, so that the conveyor belt can transport the coal. The more evenly the coal is distributed on the conveyor belt, the more evenly the arc plate and the coal will contact each other, and the pushing effect of the arc plate will also better act on the coal, which can further improve the service life of the conveyor belt.

[0017] 6. The efficient, intelligent, suspended, transport and processing high-temperature resistant conveyor belt presses the arc plate downward through the coal, causing the spring to contract and deform, allowing the air inside the arc plate to be discharged from the opening covered by the first cover plate. The discharged gas will blow from the gap between the coal, causing the gas to blow the coal powder between the two arc plates to between the two arc plates, thereby concentrating the powder on the arc plates, making it easier for the sweeping brush to clean the attached coal, thereby improving the efficiency of transportation.

[0018] 7. The efficient, intelligent, suspended, transporting and processing high-temperature resistant conveyor belt, in the process of the arc plate being driven by the conveyor belt, the rotating rod driven by the rotating frame will push the positioning column, so that the arc plate will be temporarily restored to an unpressed state, so that the airflow can be blown out through the gap covered by the first cover plate again, which is conducive to further loosening of the coal on the conveyor belt that is cracked and loosened by the raised blocks, and then it is convenient for the sweeping brush to sweep out the adhered coal, which can play a role in improving transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 3 for Figure 1 The enlarged structural diagram of the middle B part; Figure 4 It is a top view of the three-dimensional structure of the present invention; Figure 5 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 6 for Figure 5 The enlarged structural diagram of the middle C part; Figure 7 It is a bottom-up three-dimensional structural schematic diagram of the present invention; Figure 8 for Figure 7 The enlarged structural diagram of the middle D part; Fig. 9 This is a schematic diagram of the structure of the curved plate of the present invention; Fig.10 It is a schematic diagram of the second cover plate structure of the present invention.

[0020] In the figure: 1. transport frame; 2. hanging connecting plate; 3. transport motor; 4. shaking mechanism; 401. inclined plate; 402. shaking plate; 403. pushing bar; 404. rotating disc; 405. first conveyor belt; 406. discharge plate; 5. roller; 6. conveyor belt; 7. sweeping mechanism; 701. rotating frame; 702. rotating rod; 703. raised block; 704. second conveyor belt; 705. sweeping frame; 706. sweeping brush; 707. connecting rope; 708. impact ball; 709. third conveyor belt; 8. pushing assembly; 801. arc plate; 802. first cover plate; 803. first limiting leg; 804. positioning column; 805. spring; 806. second cover plate; 807. second limiting leg. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1: Please refer to Figure 1-5 The present invention provides a technical solution: an efficient, intelligent, suspended, transporting and processing high-temperature resistant conveyor belt, comprising a transport frame 1, a suspension connecting plate 2 is fixedly connected to the outer wall of the transport frame 1, a transport motor 3 is fixedly connected to the outer wall of the transport frame 1, two rollers are movably connected inside the transport frame 1, one of the rollers is fixedly connected to the output shaft of the transport motor 3, a conveyor belt 6 is arranged inside the transport frame 1, the transport motor 3 can drive the conveyor belt 6 by driving one of the rollers, the conveyor belt 6 is made of a multi-layer material including a skeleton layer and a covering rubber layer, and the covering rubber layer on the surface of the skeleton layer can better perform transportation work under high temperature, a plurality of rollers 5 are movably connected inside the transport frame 1, the rollers 5 are located inside the conveyor belt 6, a shaking mechanism 4 is fixedly connected to the top of the transport frame 1 on the right side of the conveyor belt 6, a pushing assembly 8 is fixedly connected to the outer wall of the conveyor belt 6, and a sweeping mechanism 7 is movably connected to the inside of the transport frame 1 near the left side of the conveyor belt 6; The sweeping mechanism 7 comprises: A rotating frame 701, the rotating frame 701 is movably connected to the inside of the transport frame 1, and the rotating frame 701 is movably connected to the inside of the transport frame 1; A rotating rod 702, the rotating rod 702 is movably connected to the outer side of the rotating frame 701; A protruding block 703, the protruding block 703 is fixedly connected to the outer wall of the rotating rod 702; The second conveyor belt 704 is movably connected to the protruding block 703 , and the second conveyor belt 704 is movably connected to the roller on the left side, and the roller drives the rotating frame 701 to rotate through the second conveyor belt 704 .

[0024] The transport motor 3 drives one of the rollers to cooperate with the other roller to drive the transport belt 6 to rotate. The coal is placed on the right side of the transport belt 6, and the transport belt 6 will transport the conveyor belt to the left through its own movement. During the transportation process, the roller on the left side will drive the rotating frame 701 to rotate through the second conveyor belt 704. The rotation of the rotating frame 701 will drive the rotating rod 702 to rotate in a circle around the rotating frame 701. The rotating rod 702 will push the transport belt 6 upward, and the raised block 703 on the surface of the rotating rod 702 will press against the transport belt 6, causing the surface of the transport belt 6 to bend. The bending will tear the adhered coal attached to the surface of the transport belt 6, making it easy to fall off.

[0025] The bottom of the transport frame 1 is located on the left side of the rotating frame 701 and is movably connected to a sweeping frame 705. A sweeping brush 706 is arranged on the outside of the sweeping frame 705. The outer wall of the sweeping frame 705 is movably connected to a third conveyor belt 709, and the third conveyor belt 709 is movably connected to the roller on the left side. The roller will drive the sweeping frame 705 to rotate through the third conveyor belt 709.

[0026] The left roller will also rotate with the sweeping frame 705 through the third conveyor belt 709. When the sweeping frame 705 rotates, the surface of the conveyor belt 6 will be continuously swept by the sweeping brush 706. The surface of the conveyor belt 6 will become loose due to the pushing of the raised block 703, so that the adhesion will be easily swept off by the sweeping brush 706.

[0027] A connecting rope 707 is fixedly connected to the outer wall of the sweeping frame 705 , and an impact ball 708 is fixedly connected to the outer end of the connecting rope 707 .

[0028] When the sweeping frame 705 rotates, the impact ball 708 will be thrown through the connecting rope 707, so that the impact ball 708 will continuously impact the conveyor belt 6. The impact will further loosen the adhesion on the surface of the conveyor belt 6, making it easier to be swept off by the sweeping brush 706.

[0029] Example 2: Please refer to Figure 1-8 Based on the first embodiment, the present invention provides a technical solution: The shaking mechanism 4 includes an inclined plate 401, which is fixedly connected to the inside of the transport frame 1 and located on the right side of the conveyor belt 6. A shaking plate 402 is arranged at the bottom of the inclined plate 401 inside the transport frame 1. The outer wall of the shaking plate 402 is located on the top of the conveyor belt 6 and is movably connected to four rotating disks 404. The outer wall of one of the rotating disks 404 is movably connected to a first conveyor belt 405, and the first conveyor belt 405 is movably connected to the roller on the right side. The roller will drive the corresponding first conveyor belt 405 to rotate through the first conveyor belt 405, and a push bar 403 is fixedly connected to the top of the shaking plate 402.

[0030] Pour the coal from the top of the inclined plate 401, and the coal poured onto the top of the inclined plate 401 will fall to the top of the shaking plate 402. When the roller on the right is driven, it will drive the corresponding rotating disc 404 to rotate together with the first conveyor belt 405. The rotation of the rotating disc 404 will cooperate with the other three rotating discs 404 to make the shaking plate 402 shake back and forth. The pushing bar 403 on the top of the shaking plate 402 will promote the shaking of the coal, so that the coal becomes dispersed on the top of the shaking plate 402, and then the coal falls onto the conveyor belt 6 for transportation, thereby preventing the coal from being transported in a concentrated manner on the conveyor belt 6, resulting in excessive local pressure on the conveyor belt 6 during transportation, which may cause damage to the equipment.

[0031] The outer wall of the shaking plate 402 is provided with screening holes, and the inside of the transport rack 1 is fixedly connected with a discharge plate 406 at the bottom of the hole corresponding to the shaking plate 402.

[0032] When the shaking plate 402 is shaking with the coal on the top, it will pass through the screening holes, allowing the fine coal on the coal to fall through the holes to the discharge plate 406, and then slide out from the discharge plate 406, thereby preventing the fine coal from contacting and sticking to the conveyor belt.

[0033] Example 3: Please refer to Figure 1-10 Based on the first and second embodiments, the present invention provides a technical solution: The pushing assembly 8 includes a spring 805 , which is fixedly connected to the outer wall of the conveyor belt 6 , the top of the spring 805 is fixedly connected to an arc plate 801 , the bottom of the arc plate 801 is fixedly connected to a positioning column 804 , and the positioning column 804 serves to limit the position of the arc plate 801 .

[0034] When the conveyor belt 6 is transporting coal, the arc plate 801 will be slightly raised on the surface of the conveyor belt 6. The arc plate 801 will play a role in separating the coal and cooperate with the conveyor belt 6 to push the coal for transportation, which can reduce the wear of the coal on the conveyor belt 6 and increase the service life of the conveyor belt 6.

[0035] The shaking of the shaking plate 402 makes the coal on the top of the shaking plate 402 evenly distributed, and then the coal is transported through the conveyor belt 6. The more evenly the coal is distributed on the conveyor belt 6, the more evenly the arc plate 801 and the coal are in contact with each other, and the pushing effect of the arc plate 801 will better act on the coal.

[0036] A spring 805 is provided on the outer wall of the conveyor belt 6 on the inner side of the corresponding arc plate 801, and a second limiting leg 807 is fixedly connected to the side of the spring 805 close to the conveyor belt 6, and the second limiting leg 807 is movably connected to the inside of the conveyor belt 6, and the second cover plate 806 covers the corresponding opening set on the conveyor belt 6.

[0037] A first cover piece 802 is provided on the outside of the arc plate 801. A first limiting leg 803 is fixedly connected to the first cover piece 802 near the arc plate 801, and the first limiting leg 803 is movably connected to the inside of the arc plate 801. The first cover piece 802 covers the corresponding opening provided on the arc plate 801.

[0038] When the coal is pressed on the top of the arc plate 801, the arc plate 801 will be pressed downward, causing the spring 805 to contract and deform. The space at the bottom of the arc plate 801 will become smaller, and the air inside the arc plate 801 will be discharged from the opening covered by the first cover plate 802. The discharged gas will blow from the gap between the coal, causing the gas to blow the coal powder between the two arc plates 801 to between the two arc plates 801, which will concentrate the powder on the arc plate 801 and facilitate the cleaning of the adhered coal. When there is no coal on the top of the arc plate 801, the deformation will be restored, and air will be inhaled through the opening set on the rising conveyor belt 6 covered by the spring 805.

[0039] When the arc plate 801 is driven by the conveyor belt 6, the rotating rod 702 driven by the rotating frame 701 will push the positioning column 804, causing the arc plate 801 to temporarily return to an unpressed state. Then, when the rotating rod 702 moves away, the arc plate 801 will be pressed again to allow the airflow to blow out through the gap covered by the first cover plate 802 again, which is conducive to further loosening the coal on the conveyor belt 6 that is loosened by the protruding block 703, making it easier for the sweeping brush 706 to sweep out the adhered coal.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An efficient and intelligent suspended transport and processing high temperature resistant conveyor belt, comprising a transport frame (1), characterized in that: The outer wall of the transport frame (1) is fixedly connected to a hanging connecting plate (2), the outer wall of the transport frame (1) is fixedly connected to a transport motor (3), the interior of the transport frame (1) is movably connected to two rollers, one of which is fixedly connected to the output shaft of the transport motor (3), a transport belt (6) is arranged inside the transport frame (1), the transport motor (3) can drive the transport belt (6) by driving one of the rollers, the interior of the transport frame (1) is movably connected to a plurality of rollers (5), the rollers (5) are located inside the transport belt (6), a shaking mechanism (4) is fixedly connected to the top of the transport frame (1) on the right side of the transport belt (6), a pushing assembly (8) is fixedly connected to the outer wall of the transport belt (6), and a sweeping mechanism (7) is movably connected to the interior of the transport frame (1) near the left side of the transport belt (6); The sweeping mechanism (7) comprises: A rotating frame (701), wherein the rotating frame (701) is movably connected to the inside of the transport frame (1), and the rotating frame (701) is movably connected to the inside of the transport frame (1); A rotating rod (702), wherein the rotating rod (702) is movably connected to the outside of the rotating frame (701); A protruding block (703), wherein the protruding block (703) is fixedly connected to the outer wall of the rotating rod (702); The second conveyor belt (704) is movably connected to the protruding block (703), and the second conveyor belt (704) is movably connected to the roller on the left side, and the roller drives the rotating frame (701) to rotate through the second conveyor belt (704).

2. According to claim 1, a high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt is characterized by: The bottom of the transport frame (1) is located on the left side of the rotating frame (701) and is movably connected to a sweeping frame (705). A sweeping brush (706) is arranged on the outside of the sweeping frame (705). The outer wall of the sweeping frame (705) is movably connected to a third conveyor belt (709). The third conveyor belt (709) is movably connected to a roller on the left side, and the roller drives the sweeping frame (705) to rotate through the third conveyor belt (709).

3. According to claim 2, a high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt is characterized by: A connecting rope (707) is fixedly connected to the outer wall of the sweeping frame (705), and an impact ball (708) is fixedly connected to the outer end of the connecting rope (707).

4. According to claim 1, a high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt is characterized by: The shaking mechanism (4) comprises an inclined plate (401), the inclined plate (401) being fixedly connected inside the transport frame (1) and being located on the right side of the conveyor belt (6); a shaking plate (402) being arranged inside the transport frame (1) at the bottom of the inclined plate (401); the outer wall of the shaking plate (402) being located on the top of the conveyor belt (6) and being movably connected to four rotating disks (404); the outer wall of one of the rotating disks (404) being movably connected to a first conveyor belt (405), and the first conveyor belt (405) being movably connected to a roller on the right side, and the roller will drive the corresponding first conveyor belt (405) to rotate through the first conveyor belt (405); and a pushing bar (403) being fixedly connected to the top of the shaking plate (402).

5. The high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt according to claim 4 is characterized by: The outer wall of the shaking plate (402) is provided with screening holes, and a discharge plate (406) is fixedly connected to the bottom of the hole corresponding to the shaking plate (402) inside the transport rack (1).

6. The high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt according to claim 1 is characterized by: The pushing assembly (8) comprises a spring (805), wherein the spring (805) is fixedly connected to the outer wall of the conveyor belt (6), the top of the spring (805) is fixedly connected to an arc plate (801), and the bottom of the arc plate (801) is fixedly connected to a positioning column (804).

7. The high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt according to claim 6 is characterized by: A spring (805) is provided on the inner side of the corresponding arc-shaped plate (801) on the outer wall of the conveyor belt (6); a second limiting leg (807) is fixedly connected to the side of the spring (805) close to the conveyor belt (6); and the second limiting leg (807) is movably connected to the inside of the conveyor belt (6); and the second cover plate (806) covers the corresponding opening provided on the conveyor belt (6).

8. The high-efficiency intelligent suspension transportation and processing high-temperature resistant conveyor belt according to claim 7 is characterized by: A first cover plate (802) is arranged on the outside of the arc-shaped plate (801); a first limiting leg (803) is fixedly connected to the first cover plate (802) on one side close to the arc-shaped plate (801); and the first limiting leg (803) is movably connected to the inside of the arc-shaped plate (801); the first cover plate (802) covers a corresponding opening arranged on the arc-shaped plate (801).

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