Belt conveyor head station and strip mine displacement belt conveyor

Abstract

A machine head station of a belt conveyor comprises a machine head belt storage frame, a discharging roller, a transmission roller and a belt storage part. The transmission roller and the discharging roller are rotationally installed at the left end and the right end of the machine head belt storage frame respectively. The belt storage part comprises a belt storage turnabout drum and a belt storage tensioning trolley; the belt storage turnabout drum is rotationally installed on the machine head belt storage frame and located below the side, facing the discharging drum, of the transmission drum. The belt storage tensioning trolley is arranged on the lower portion of the machine head belt storage frame in a sliding mode and located between the belt storage turnabout drum and the discharging drum. The belt storage turnabout drum and the belt storage tensioning trolley enable the conveying belt to form a four-layer belt storage structure on the machine head belt storage frame; a first deviation rectifying assembly is installed below the side, facing the stored belt tensioning trolley, of the stored belt turnabout drum. The invention further provides the strip mine displacement belt conveyor. The deviation of the lower return conveying belt of the belt storage part can be adjusted, and the time consumed for aligning a machine head station again after the belt conveyor is moved is shortened; the conveyor belt can be prevented from being damaged when the conveyor is horizontally and transversely moved.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and in particular to a belt conveyor head station and an open-pit mine displacement belt conveyor. Background Art

[0002] According to the process route of the open-pit mine working face, the open-pit mine shifting belt conveyor will be relocated multiple times according to process requirements. When the existing shifting belt conveyor is shifted horizontally, the tensioning device is first completely loosened, and then the tensioning roller is pushed to the initial position. At this time, the conveyor belt stored in the tensioning device is released, but the amount of conveyor belt released is small; the conveyor belt is affected by the verticality of its own weight. When the fuselage is shifted horizontally, the fuselage's lateral shifting position is often limited due to insufficient conveyor belt release, which limits the lateral shifting step distance. The number of shifts will increase, greatly extending the whole machine relocation time. The open-pit mine shifting belt conveyor will often shift the working face position. After the relocation, the whole machine needs to re-center the line. The fuselage section is light in weight and has track restrictions, so it is relatively convenient to find the center line; but the head station is mostly bulky, weighing up to hundreds of tons, and it is extremely inconvenient to align. Due to the influence of the foundation, the equipment itself or human factors, there will basically be a certain deviation after the head station is finally placed. The center line of the head station and the center line of the fuselage are not in a straight line. At this time, the conveyor belt will deviate at the head station. The existing head stations are not equipped with conveyor belt correction devices. If the conveyor belt deviates slightly, it is basically maintained in the current state; if the conveyor belt deviates significantly, the head station needs to be realigned, which is time-consuming and labor-intensive. Summary of the Invention

[0003] In order to solve the technical problems existing in the above technology, it is necessary to provide a belt conveyor head station.

[0004] A belt conveyor head station includes a head belt storage rack, a discharge roller, a transmission roller, and a belt storage part; The transmission roller is rotatably mounted on the left end of the head belt storage rack; The unloading roller is rotatably mounted on the right end of the head belt storage rack; The belt storage part includes a belt storage redirecting roller and a belt storage tensioning trolley; the belt storage redirecting roller is rotatably mounted on the head belt storage rack, and the belt storage redirecting roller is located below the side of the driving roller facing the unloading roller; the belt storage tensioning trolley is arranged at the lower part of the head belt storage rack and is located between the belt storage redirecting roller and the unloading roller, and the belt storage tensioning trolley can move along the long side direction of the head belt storage rack; the belt storage redirecting roller and the belt storage tensioning trolley enable the conveyor belt to form a four-layer belt storage structure on the head belt storage rack; A first deviation-correcting assembly located below the conveyor belt is installed on the lower side of the belt storage redirecting roller facing the belt storage tensioning trolley.

[0005] Preferably, the belt storage tensioning trolley includes a tensioning frame, a first large-diameter redirecting roller, a second large-diameter redirecting roller, and a small-diameter redirecting roller; the tensioning frame is arranged at the lower part of the head belt storage rack and is located between the belt storage redirecting roller and the unloading roller, and the tensioning frame can move along the long side direction of the head belt storage rack; the first large-diameter redirecting roller and the second large-diameter redirecting roller are rotatably installed at the left end above the tensioning frame and the right end below the tensioning frame respectively; the small-diameter redirecting roller is rotatably installed on the tensioning frame and is located between the first large-diameter redirecting roller and the second large-diameter redirecting roller in the longitudinal and transverse directions.

[0006] Preferably, a second deviation-correcting assembly located below the conveyor belt is installed on the lower side of the first large-diameter redirecting roller facing the belt storage redirecting drum.

[0007] Preferably, a third deviation-correcting assembly located below the conveyor belt is installed on the lower side of the discharging roller facing the belt storage redirection roller.

[0008] Preferably, the first correcting assembly, the second correcting assembly and the third correcting assembly adopt the same structure; the first correcting assembly includes a correcting roller, an adjusting oil cylinder and a track; the track is fixed on the machine head storage rack, and the track is an arc-shaped structure. The rotating end of the correcting roller is rotatably connected to the machine head storage rack, and the swinging end of the correcting roller is connected to the track, and the end can move along the track. The adjusting oil cylinder is arranged on the machine head storage rack, and one end of the adjusting oil cylinder is hinged to the swinging end of the correcting roller, so that when the adjusting oil cylinder is extended and retracted, it can drive the swinging end of the correcting roller to move back and forth along the track with the rotating end as the center of the circle.

[0009] Preferably, a base is provided on the head tape storage rack, a shaft sleeve is longitudinally installed on the base, a rotating shaft is rotatably installed along the axial direction of the shaft sleeve, the rotating end of the correcting roller is fixedly connected to the rotating shaft, and a seal is provided between the rotating end of the correcting roller and the shaft sleeve.

[0010] Preferably, a guide rail for the tensioning frame to move is provided at the lower portion of the head tape storage rack, and limiting protrusions capable of limiting the displacement of the tensioning frame are provided at both ends of the guide rail.

[0011] Preferably, a tensioning assembly is provided on the head tape storage rack, and the tensioning assembly includes a tensioning winch, an upper guide wheel group, and a lower guide wheel group; the upper guide wheel group is fixed to the upper end of the head tape storage rack close to the unloading roller, and the lower guide wheel group is fixed to the lower part of the head tape storage rack close to the unloading roller, and the tensioning winch is installed on the top of the head tape storage rack, and the tensioning winch is connected to the tensioning frame through a tensioning rope that is sequentially connected to the upper guide wheel group and the lower guide wheel group, so that the tensioning winch can drive the tensioning frame to move along the long side direction of the head tape storage rack.

[0012] Preferably, it also includes a control center, and the control center and the deviation adjustment cylinder, the unloading roller, the storage belt redirecting roller, and the first large-diameter redirecting roller are all equipped with deviation sensors on the side and lower part, and the deviation sensors establish a communication connection with the control center.

[0013] There is also a need to provide an open pit mine displacement belt conveyor.

[0014] A belt conveyor for open-pit mine displacement includes the belt conveyor head station described above.

[0015] The belt conveyor head station provided by the present invention comprises a head belt storage rack, a discharge roller, a transmission roller and a belt storage part; the transmission roller is rotatably mounted on the left end of the head belt storage rack; the discharge roller is rotatably mounted on the right end of the head belt storage rack; the belt storage part comprises a belt storage redirecting roller and a belt storage tensioning trolley; the belt storage redirecting roller is rotatably mounted on the head belt storage rack, and the belt storage redirecting roller is located at the lower side of the transmission roller facing the discharge roller; the belt storage tensioning trolley is arranged at the lower part of the head belt storage rack and between the belt storage redirecting roller and the discharge roller, and the belt storage tensioning trolley can move along the long side direction of the head belt storage rack; the belt storage redirecting roller and the belt storage tensioning trolley enable the conveyor belt to form a four-layer belt storage structure on the head belt storage rack; a first deviation correcting assembly located below the conveyor belt is installed at the lower side of the belt storage redirecting roller facing the belt storage tensioning trolley. The present invention relies on a belt storage redirection roller and a belt storage tensioning trolley to form a four-layer belt storage structure on the head belt storage rack, increasing the conveyor belt storage capacity by 2 to 3 times compared to the original head station. Because the conveyor belt itself can withstand longitudinal stretching well but poor transverse stretching, when the fuselage part is horizontally moved, to ensure that the conveyor belt is not damaged, it is only necessary to release the conveyor belt stored in the belt storage device, and the conveyor belt can be naturally placed on the fuselage bracket. During the horizontal transverse movement of the fuselage, the conveyor belt is only subjected to the external force of transverse movement and not the longitudinal conveyor tension, ensuring that the conveyor belt is not horizontally torn when bending. Because the conveyor belt is in a relaxed state and is not easily scratched. The additional first deviation correction component can adjust the deviation of the return conveyor belt of the lower layer of the belt storage part, reducing the time spent on re-aligning the head station after the belt conveyor is moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2This is a schematic diagram of the front view of the first correcting component of the present invention.

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the top view structure.

[0020] Figure 4 For the present invention Figure 2 Schematic diagram of the side structure.

[0021] Figure 5 This is a schematic diagram of the first deviation situation of the conveyor belt of the present invention.

[0022] Figure 6 Schematic diagram of the second deviation situation of the conveyor belt of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the swing end of the correction roller of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the rotating end of the correction roller of the present invention.

[0025] Figure 9 It is a structural schematic diagram of the belt storage and tensioning trolley of the present invention.

[0026] In the figure: the head belt storage rack 01, the base 11, the bushing 12, the rotating shaft 13, the seal 14, the guide rail 15, the limiting protrusion 16, the unloading roller 02, the transmission roller 03, the belt storage part 04, the belt storage redirecting roller 41, the belt storage tensioning trolley 42, the tensioning frame 421, the first large-diameter redirecting roller 422, the second large-diameter redirecting roller 423, the small-diameter redirecting roller 424, the tightening screw 425, the first deviation correction component 05, the deviation correction roller 51, the deviation adjustment cylinder 52, the track 53, the second deviation correction component 06, the third deviation correction component 07, the tensioning component 08, the tensioning winch 81, the upper guide wheel group 82, the lower guide wheel group 83, the tensioning rope 84, the control center 09, the deviation sensor 10, and the conveyor belt 20. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] Please see Figures 1 to 4 In one embodiment, the present invention provides a belt conveyor head station, comprising a head belt storage rack 01, a discharge roller 02, a transmission roller 03, and a belt storage unit 04; The transmission roller 03 is rotatably mounted on the left end of the head stocker 01; the axis of the transmission roller 03 is arranged along the short side direction of the head stocker 01, and the transmission roller 03 is mounted on the head stocker 01 through a bearing seat to ensure that the transmission roller 03 can rotate.

[0030] Among them, the unloading roller 02 is rotatably installed at the right end of the head tape storage rack 01; the axis of the unloading roller 02 is arranged along the short side direction of the head tape storage rack 01, and the unloading roller 02 is installed on the head tape storage rack 01 through a bearing seat to ensure that the unloading roller 02 can rotate.

[0031] Among them, the belt storage part 04 includes a belt storage redirecting roller 41 and a belt storage tensioning trolley 42; the belt storage redirecting roller 41 is rotatably installed on the head belt storage rack 01, and the belt storage redirecting roller 41 is located at the lower side of the transmission roller 03 facing the unloading roller 02; the belt storage tensioning trolley 42 is arranged at the lower part of the head belt storage rack 01 and is located between the belt storage redirecting roller 41 and the unloading roller 02, and the belt storage tensioning trolley 42 can move along the long side direction of the head belt storage rack 01; the belt storage redirecting roller 41 and the belt storage tensioning trolley 42 make the conveyor belt form a four-layer belt storage structure on the head belt storage rack 01.

[0032] Among them, a first deviation correction component 05 located below the conveyor belt is installed on the lower side of the belt storage redirection roller 41 facing the belt storage tensioning trolley 42.

[0033] In this embodiment, the conveyor belt is stored in at least four layers on the head belt storage rack 01 by means of a belt redirecting roller 41 and a belt tensioning trolley 42, which increases the conveyor belt storage capacity by 2 to 3 times compared to the original head station. Because the conveyor belt itself can withstand longitudinal stretching well but poor transverse stretching, when the fuselage is horizontally moved, to ensure that the conveyor belt is not damaged, it is only necessary to release the conveyor belt stored in the belt storage unit 04, and the conveyor belt can be naturally placed on the fuselage bracket. During the horizontal and transverse movement of the fuselage, the conveyor belt is only subjected to the external force of transverse movement, not the longitudinal conveyor tension, ensuring that the conveyor belt is not torn laterally when bending. Because the conveyor belt is in a relaxed state and is not easily scratched, the first deviation correction component 05 is added to adjust the deviation of the return conveyor belt on the lower layer of the belt storage unit 04, reducing the time spent on realigning the head station after the belt conveyor is moved.

[0034] In one embodiment, the tape storage tensioning trolley 42 includes a tensioning frame 421, a first large-diameter bend roller 422, a second large-diameter bend roller 423, and a small-diameter bend roller 424. The tensioning frame 421 is disposed at the bottom of the head tape storage rack 01 and is located between the tape storage bend roller 41 and the discharge roller 02. The tensioning frame 421 is movable along the longitudinal direction of the head tape storage rack 01. The first large-diameter bend roller 422 and the second large-diameter bend roller 423 are rotatably mounted at the left end above the tensioning frame 421 and the right end below the tensioning frame 421, respectively. The small-diameter bend roller 424 is rotatably mounted on the tensioning frame 421 and is located between the first large-diameter bend roller 422 and the second large-diameter bend roller 423 in the longitudinal and transverse directions. By adopting the layout structure of the first large-diameter redirecting roller 422, the second large-diameter redirecting roller 423, and the small-diameter redirecting roller 424 in combination with the belt storage redirecting drum 41, a four-layer belt storage structure can be formed at the lower part of the head belt storage rack 01, realizing the integrated design of the belt storage and the head station, which is convenient for transportation and surface changing, and the large conveyor belt storage capacity can meet the process requirements of the movable belt conveyor that needs to be freely extended or shortened to a certain length due to changes in the working surface, which greatly saves the equipment modification cost and improves its utilization efficiency, thereby enhancing the versatility and practicality of the conveyor itself.

[0035] In this embodiment, the tensioning force of the conveyor belt by the first large diameter redirecting roller 422, the second large diameter redirecting roller 423, and the small diameter redirecting roller 424 can be achieved by the tightening screws 425 at both ends of the first large diameter redirecting roller 422, the second large diameter redirecting roller 423, and the small diameter redirecting roller 424, and the tightening screws 425 are installed symmetrically along the horizontal direction, and the movement of the first large diameter redirecting roller 422, the second large diameter redirecting roller 423, and the small diameter redirecting roller 424 is controlled by the distance that the tightening screws 425 on the left and right sides are screwed in, thereby achieving the adjustment of the tensioning force of the conveyor belt.

[0036] In a more optimized solution, a second deviation correction assembly 06 is installed below the conveyor belt on the side below the first large-diameter redirecting roller 422 facing the belt storage redirecting drum 41. The second deviation correction assembly 06 can effectively adjust the conveyor belt deviation caused by the reciprocating movement of the tensioning trolley in the belt storage section 04.

[0037] In a more optimized solution, a third deviation-correcting assembly 07 is installed below the conveyor belt on the lower side of the discharge drum 02 facing the belt storage redirection drum 41. The third deviation-correcting assembly 07 can effectively adjust the deviation of the upper discharge conveyor belt and prevent the upper discharge conveyor belt from causing material spillage due to deviation.

[0038] Correspondingly, for the first correcting component 05, the second correcting component 06, and the third correcting component 07, the first correcting component 05, the second correcting component 06, and the third correcting component 07 can be adjusted simultaneously and collaboratively, which can solve the problem of deviation of the upper unloading conveyor belt and the lower return conveyor belt caused by the center line of the head station and the center line of the fuselage being not in a straight line.

[0039] Specifically, the first correcting assembly 05, the second correcting assembly 06, and the third correcting assembly 07 adopt the same structure; among them, the first correcting assembly 05 includes a correcting roller 51, an adjusting cylinder 52, and a track 53; the track 53 is fixed on the head tape storage rack 01, and the track 53 has an arc-shaped structure. The rotating end of the correcting roller 51 rotates and is connected to the head tape storage rack 01, and the swinging end of the correcting roller 51 is connected to the track 53, and the end can move along the track 53. The correcting roller 51 is small in size and can be suitable for installation in a narrow space. The deviation adjusting cylinder 52 is arranged on the head belt storage rack 01. One end of the deviation adjusting cylinder 52 is hinged to the swinging end of the correction roller 51, so that when the deviation adjusting cylinder 52 is extended or retracted, it can drive the swinging end of the correction roller 51 to move back and forth in a fan-shaped trajectory along the track 53 with the rotating end as the center, thereby realizing the unilateral swinging structure of the correction roller 51, which can realize the deviation correction adjustment of the conveyor belt and withstand the tension of the conveyor belt in the longitudinal direction. For example, when the conveyor belt deviates toward the side of the swinging end of the deflection correction roller 51, the deflection adjustment cylinder 52 contracts, and the swinging end of the deflection correction roller 51 will swing to the left along the track 53 with the rotating end of the deflection correction roller 51 as the center of the circle, so that the deflection correction roller 51 rotates backward, thereby correcting the deflection of the conveyor belt; when the conveyor belt deviates toward the side of the rotating end of the deflection correction roller 51, the deflection adjustment cylinder 52 extends, and the swinging end of the deflection correction roller 51 will swing to the right along the track 53 with the rotating end of the deflection correction roller 51 as the center of the circle, so that the deflection correction roller 51 rotates forward, thereby correcting the deflection of the conveyor belt.

[0040] Of course, the swing end of the correction roller 51 can be moved in a rolling or sliding manner. For example, in the case of rolling, a running wheel adapted to the track 53 can be installed below the swing end of the correction roller 51, and the running wheel will move along the track 53. In the case of sliding, a slider adapted to the track 53 can be installed below the swing end of the correction roller 51, and the slider will move along the track 53.

[0041] Specifically, a base 11 is provided on the head tape storage rack 01, a shaft sleeve 12 is longitudinally installed on the base 11, a rotating shaft 13 is rotatably installed along the axial direction of the shaft sleeve 12, the rotating end of the correcting roller 51 is fixedly connected to the rotating shaft 13, and a seal 14 is provided between the rotating end of the correcting roller 51 and the shaft sleeve 12.

[0042] In one embodiment, to ensure that the tensioning frame 421 can move linearly and stably, a guide rail 15 is provided at the bottom of the head storage rack 01 for the movement of the tensioning frame 421. Accordingly, to prevent the tensioning frame 421 from exceeding the limit of movement, limit protrusions 16 are provided at both ends of the guide rail 15 to limit the displacement of the tensioning frame 421.

[0043] In one embodiment, a tensioning assembly 08 is provided on the head stocker 01. The tensioning assembly 08 includes a tensioning winch 81, an upper guide wheel assembly 82, and a lower guide wheel assembly 83. The upper guide wheel assembly 82 is fixed to the upper end of the head stocker 01 near the discharge drum 02, and the lower guide wheel assembly 83 is fixed to the lower portion of the head stocker 01 near the discharge drum 02. The tensioning winch 81 is mounted on the top of the head stocker 01. The tensioning winch 81 is connected to the tensioning frame 421 via a tensioning rope 84 that sequentially connects the upper guide wheel assembly 82 and the lower guide wheel assembly 83. The tensioning winch 81 can drive the tensioning frame 421 to move along the longitudinal direction of the head stocker 01. The tensioning rope 84 can be a steel wire rope. When the belt conveyor needs to be moved horizontally, the tensioning winch 81 is released, and the tensioning trolley moves to the side of the transmission roller 03, and the stored conveyor belt is released. The belt storage function has a large conveyor belt storage length, which can make the conveyor belt naturally hang down on the fuselage bracket. At this time, the fuselage can be moved horizontally and laterally in sections. The belt storage function can prevent the conveyor belt from being torn due to insufficient release of the conveyor belt during the horizontal and laterally shifting.

[0044] In one embodiment, a control center 09 is also provided. This control center 09 can be a PLC control cabinet or a central control room. Deviation sensors 10 are installed on the sides and undersides of the control center 09, the deviation adjustment cylinder 52, the discharge roller 02, the storage and redirection roller 41, and the first large-diameter redirection roller 422. Deviation sensors 10 establish a communication connection with the control center 09.

[0045] In this embodiment, when the deviation sensor 10 at the storage belt redirecting roller 41 detects that the lower return conveyor belt is deviating, a feedback signal is sent to the control center 09, and the control center 09 feeds back a signal to the deviation adjustment cylinder 52 to start operation, and the deviation correction roller 51 starts to rotate back and forth, and begins to correct the deviation of the conveyor belt at the storage belt redirecting roller 41; When the deviation sensor 10 at the first large-diameter redirecting roller 422 detects that the conveyor belt in the belt storage unit 04 is deviating, a feedback signal is sent to the control center 09, and the control center 09 sends a feedback signal to the deviation adjustment cylinder 52 to start the action, and the deviation correction roller 51 starts to rotate back and forth, and starts to correct the deviation of the conveyor belt at the first large-diameter redirecting roller 422; When the deviation sensor 10 at the unloading roller 02 detects that the upper unloading conveyor belt is deviating, a feedback signal is sent to the control center 09, and the control center 09 feeds back a signal to the deviation adjustment cylinder 52 to start action, and the deviation correction roller 51 starts to rotate back and forth to correct the conveyor belt at the material roller.

[0046] Of course, the conveyor belt correction at the unloading roller 02, the storage belt redirecting roller 41, and the first large diameter redirecting roller 422 can also be adjusted simultaneously and coordinated to solve the problem of deviation of the upper unloading belt and the lower return belt caused by the center line of the head station and the center line of the fuselage being not in a straight line.

[0047] In one embodiment, the present invention provides an open-pit mine displacement belt conveyor, including the belt conveyor head station.

[0048] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A belt conveyor head station, characterized in that: It includes the head tape storage rack, unloading roller, transmission roller and tape storage unit; The transmission roller is rotatably mounted on the left end of the head belt storage rack; The unloading roller is rotatably mounted on the right end of the head belt storage rack; The belt storage part includes a belt storage redirecting roller and a belt storage tensioning trolley; the belt storage redirecting roller is rotatably mounted on the head belt storage rack, and the belt storage redirecting roller is located below the side of the driving roller facing the unloading roller; the belt storage tensioning trolley is arranged at the lower part of the head belt storage rack and is located between the belt storage redirecting roller and the unloading roller, and the belt storage tensioning trolley can move along the long side direction of the head belt storage rack; the belt storage redirecting roller and the belt storage tensioning trolley enable the conveyor belt to form a four-layer belt storage structure on the head belt storage rack; A first deviation-correcting assembly located below the conveyor belt is installed on the lower side of the belt storage redirecting roller facing the belt storage tensioning trolley.

2. The belt conveyor head station according to claim 1, characterized in that: The belt storage tensioning trolley includes a tensioning frame, a first large-diameter redirecting roller, a second large-diameter redirecting roller, and a small-diameter redirecting roller; the tensioning frame is arranged at the lower part of the head belt storage rack and is located between the belt storage redirecting roller and the unloading roller, and the tensioning frame can move along the long side direction of the head belt storage rack; the first large-diameter redirecting roller and the second large-diameter redirecting roller are rotatably installed at the left end above the tensioning frame and the right end below the tensioning frame respectively; the small-diameter redirecting roller is rotatably installed on the tensioning frame and is located between the first large-diameter redirecting roller and the second large-diameter redirecting roller in the longitudinal and transverse directions.

3. The belt conveyor head station according to claim 2, characterized in that: A second deviation-correcting assembly located below the conveyor belt is installed on the lower side of the first large-diameter redirecting roller facing the belt storage redirecting drum.

4. The belt conveyor head station according to claim 2 or 3, characterized in that: A third deviation-correcting assembly located below the conveyor belt is installed on the lower side of the discharging roller facing the belt storage and redirecting roller.

5. The belt conveyor head station according to claim 4, characterized in that: The first, second and third correcting assemblies adopt the same structure; the first correcting assembly includes a correcting roller, an adjusting oil cylinder and a track; the track is fixed on the machine head tape storage rack, and the track has an arc-shaped structure. The rotating end of the correcting roller is rotatably connected to the machine head tape storage rack, and the swinging end of the correcting roller is connected to the track, and the end can move along the track. The adjusting oil cylinder is arranged on the machine head tape storage rack, and one end of the adjusting oil cylinder is hinged to the swinging end of the correcting roller, so that when the adjusting oil cylinder is extended or retracted, it can drive the swinging end of the correcting roller to move back and forth along the track with the rotating end as the center of the circle.

6. The belt conveyor head station according to claim 5, characterized in that: The head tape storage rack is provided with a base, a shaft sleeve is longitudinally installed on the base, a rotating shaft is rotatably installed along the axial direction of the shaft sleeve, the rotating end of the correcting roller is fixedly connected to the rotating shaft, and a seal is provided between the rotating end of the correcting roller and the shaft sleeve.

7. The belt conveyor head station according to claim 2, characterized in that: The lower part of the head tape storage rack is provided with a guide rail for the tensioning frame to move, and the two ends of the guide rail are provided with limiting protrusions that can limit the displacement of the tensioning frame.

8. The belt conveyor head station according to claim 2, characterized in that: The head tape storage rack is provided with a tensioning assembly, and the tensioning assembly includes a tensioning winch, an upper guide wheel group, and a lower guide wheel group; the upper guide wheel group is fixed to the upper end of the head tape storage rack close to the unloading roller, and the lower guide wheel group is fixed to the lower part of the head tape storage rack close to the unloading roller. The tensioning winch is installed on the top of the head tape storage rack, and the tensioning winch is connected to the tensioning frame through a tensioning rope that is sequentially connected to the upper guide wheel group and the lower guide wheel group, so that the tensioning winch can drive the tensioning frame to move along the long side direction of the head tape storage rack.

9. The belt conveyor head station according to claim 5, characterized in that: It also includes a control center, and the control center and the deviation adjustment cylinder, the unloading roller, the belt storage redirecting roller, and the first large-diameter redirecting roller are all equipped with deviation sensors on the side and lower parts, and the deviation sensors establish a communication connection with the control center.

10. An open-pit mine shifting belt conveyor, characterized in that: The invention comprises the belt conveyor head station according to any one of claims 1 to 9.

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