Self-adaptive long-distance round pipe belt conveyor device

Abstract

The invention discloses a self-adaptive long-distance round pipe belt conveyor device which comprises a round pipe belt conveyor which comprises a main driving roll shaft and an auxiliary roll shaft, a main conveying belt is wound on the main driving roll shaft and the auxiliary roll shaft, the main conveying belt circularly and circumferentially rotates along with rotation of the main driving roll shaft, and the auxiliary roll shaft is wound on the main conveying belt. The section, used for bearing materials, of the main conveying belt between the main driving roll shaft and the auxiliary roll shaft is bent and rolled into a circular tube shape; the conveying belt range extending mechanisms are arranged below the main conveying belt, each conveying belt range extending mechanism comprises a middle driving roll shaft and a middle auxiliary roll shaft, and a range extending friction belt is connected end to end, wound on the middle driving roll shafts and the middle auxiliary roll shafts and circumferentially rotates under the rotation of the middle driving roll shafts; the upper surface of the range-extending friction belt is tightly attached to the periphery of the main conveying belt, and the range-extending friction belt and the main conveying belt move in the same direction and at the same speed, the conveying belt range-extending mechanism is adopted for driving the tubular main conveying belt, and the situation that the tension of the long-distance conveying main conveying belt is too large is avoided.

Description

Technical Field

[0001] The present invention relates to the field of material transportation, and more particularly to an adaptive long-distance round tube belt conveyor device. Background Art

[0002] The pipe belt conveyor is an improved belt conveyor. Its driving method is similar to that of the traditional belt conveyor. After the conveyor belt remains straight to receive the material, the two sides of the belt are bent upward by a specially arranged roller group until the two sides are bent to form an overlap. At this time, the belt is shaped like a tube to completely wrap the internal material. During the movement of the conveyor belt, the conveyor belt is supported by a special conventional roller group. Due to its environmental protection and long-distance transportation advantages, the pipe belt conveyor is widely used in various industries of the national economy such as steel, coal, ports and terminals, electricity, and building materials.

[0003] At present, pipe-belt conveyors are developing towards large-scale and long-distance conveyors. However, there are few pipe-belt conveyors with an overall conveying distance of more than 10KM in various projects at home and abroad. This is mainly because when the conveying distance is too long, the conveyor belt is subject to more friction from the supporting rollers, so the strength is difficult to bear and it is easy to tear and break the belt. The corresponding single drive motor is also more difficult to drive the entire conveyor belt. In the design of conventional belt conveyors, in order to achieve the purpose of long-distance transportation, an intermediate drive is often added in the middle of the conveyor belt to avoid the problem that the conveyor belt is too tensile and easy to break, and a single drive motor is difficult to drive the entire conveyor line. The conventional additional schemes include unloading intermediate drive method and friction intermediate drive method. However, since the conveyor belt of the pipe-belt conveyor is a round tube during the transportation process, the conventional conveyor belt unloading intermediate drive method and friction drive method cannot be applied. Therefore, under some long-distance requirements, multiple independent pipe-belt conveyors can only be used to cooperate with each other to achieve the purpose of long-distance transportation through multiple conveyor belt transfers.

[0004] In order to solve the problem that the pipe belt conveyor is difficult to carry out intermediate drive, the invention patent with application publication number CN108996109A discloses a pipe belt machine middle drive structure and a tubular belt conveyor, which first unfolds the pipe belt that has formed a pipe body into a plane through an unfolding mechanism, and then unloads the material on the conveyor belt to the rear conveyor belt after the intermediate drive, and then re-rolls into a pipe belt. This scheme completes the intermediate drive of the pipe belt by unfolding the pipe belt, unloading, intermediate driving, loading, and rolling the pipe in sequence, solving the problem that it is difficult to add intermediate drive to a single pipe belt conveyor to meet long-distance transportation. However, the advantage of the pipe belt conveyor is that it can form a sealed state for the material during the transportation process to avoid dust or material leakage. In this scheme, the pipe belt needs to be unfolded many times, and the material needs to be transferred many times, which has a large environmental impact and must enter environmental protection and sealing equipment such as dust purification. In addition to the intermediate drive equipment, the cost of supporting equipment is greatly increased, and due to the increase of multiple material transfers and multiple pipe rolling in the middle, the damage to the conveyor belt is greatly increased, and it is difficult to ensure uniform loading of materials in the pipe.

[0005] Therefore, it is necessary to propose a new type of pipe-belt conveyor device, which can not only fundamentally solve the long-distance transportation problem of the pipe-belt conveyor, but also eliminate the need to unfold the pipe-shaped conveyor belt during the intermediate driving process. Summary of the invention

[0006] One object of the present invention is to provide an adaptive long-distance circular tube belt conveyor device, which can significantly increase the carrying distance of the tube belt conveyor by adding an intermediate driving device without unfolding the tube belt.

[0007] In order to achieve these purposes and other advantages according to the present invention, according to one aspect of the present invention, the present invention provides an adaptive long-distance circular tube belt conveyor device, including: a set of circular tube belt conveyors, which include a main drive roller and an auxiliary roller, a main conveyor belt connected end to end and wound around the main drive roller and the auxiliary roller, the main conveyor belt is rotated by the main drive roller and rotates circumferentially, and the section of the main conveyor belt between the main drive roller and the auxiliary roller for carrying materials is bent into a circular tube; one or more conveyor belt range extension mechanisms are arranged below the circular tube-shaped main conveyor belt, the conveyor belt range extension mechanisms include an intermediate drive roller and an intermediate auxiliary roller, there is an extended-range friction belt connected end to end and wound around the intermediate drive roller and the intermediate auxiliary roller and rotates circumferentially by the rotation of the intermediate drive roller, the upper surface of the extended-range friction belt is in close contact with the outer periphery of the main conveyor belt and moves in the same direction and at the same speed as the main conveyor belt.

[0008] Preferably, the belt body of the extended-range friction belt that moves in the same direction as the main conveyor belt is sequentially composed of a straight belt section, an adjustment belt section, and a gripping belt section along the direction of movement. The main conveyor belt on the straight belt section is passed through conventional roller groups that are arranged at intervals, the straight belt section is lower than the conventional roller group, the gripping belt section fits the outer periphery of the main conveyor belt, and the upper surface of the straight belt section is vertically limited by a rotatable first limiting roller. Auxiliary roller groups that are spaced apart and sequentially lifted in the direction of movement of the main conveyor belt are provided below the adjustment belt section, wherein the auxiliary roller group bends and lifts the extended-range friction belt until the extended-range friction belt is completely wrapped around the outer periphery of the main conveyor belt, and a first limiting roller is provided above the straight belt section so that the straight belt section is not lifted and deformed by the auxiliary roller group.

[0009] Preferably, the gripping section belt body and the corresponding main conveyor belt are supported by a supporting roller group arranged at intervals.

[0010] Preferably, two sets of symmetrical hanging rails are provided on the periphery of the extended-range friction belt, and a plurality of spaced hanging rail pulleys are slidably fixed on each set of hanging rails, and the hanging rail pulleys are connected to the edges of the corresponding sides of the extended-range friction belt by hinges, wherein the extended-range friction belt drives the hanging rail pulleys on both sides to move circumferentially on the hanging rails, and the two sets of hanging rails change the spacing so that the suspended extended-range friction belts are horizontally straightened or naturally bent, and the two sets of hanging rails located above the adjustment section belt body are gradually lifted along the movement direction of the extended-range friction belt and the spacing is reduced, so that the extended-range friction belt is completely wrapped around the periphery of the main conveyor belt.

[0011] Preferably, lifting holes are provided at intervals along the circumferential direction on both edges of the extended-range friction belt, and lifting rings are passed through the holes, which correspond one to one with the lifting rail pulleys and are connected by hinges.

[0012] Preferably, a plurality of support frames are arranged at intervals under the main conveyor belt, which are steel frames with crossbeams connected to the top of two columns. The belt body of the extended-range friction belt in the opposite direction of movement of the main conveyor belt is located between the columns of the support frames. The support frames are divided into a first frame, a second frame, and a third frame corresponding to the straight section belt body, the adjustment section belt body, and the wrapping section belt body. The conventional roller group, the auxiliary roller group, and the supporting roller group are respectively fixed on the top of the first frame, the second frame, and the third frame.

[0013] Preferably, the cross-section of the hanging rail is rectangular frame-shaped, and a guide groove is provided along the entire length of the side wall of the hanging rail facing the extended-range friction belt. The plates on both sides of the guide groove are walking rails. The hanging rail pulley includes two walking wheels, which roll along the walking rail in the hanging rail. A connecting shaft is connected between the two walking wheels. The hanging ring and the connecting shaft are connected by a first chain, and the first chain passes through the guide grooves.

[0014] Preferably, the hanging rail pulley also includes a limiting wheel, which is matched and rotatably clamped in the guide groove.

[0015] Preferably, a second chain is connected between adjacent hanging rail pulleys in the same hanging rail.

[0016] The present invention has at least the following beneficial effects:

[0017] First, the present invention improves the friction type intermediate drive method, and adopts a conveyor belt range extension mechanism to drive the tubular main conveyor belt that has not been unfolded. While increasing the driving capacity of the main conveyor belt, it avoids the main conveyor belt from breaking due to excessive tension during long-distance transportation.

[0018] Second, the extended-range friction belt of the present invention completely wraps around the tubular main conveyor belt through the cooperation of the auxiliary roller set and the hanging rail, and because the spacing of the hanging rails is retracted again after the extended-range friction belt wraps around the tubular main conveyor belt, the extended-range friction belt and the main conveyor belt work better together.

[0019] Thirdly, the effect of the extended-range friction belt of the present invention on the main conveyor belt does not require the tubular main conveyor belt to be unfolded again, thus avoiding the exposure of the internal materials and saving the supporting environmental protection measures.

[0020] Fourthly, the friction type intermediate drive method adopted by the present invention allows the transported materials to be always wrapped in the main conveyor belt, eliminating the need for multiple belt changes and transfers, thus avoiding the problem of uneven distribution of materials during the transfer process.

[0021] Fifth, the friction type intermediate drive method adopted by the present invention does not require the main conveyor belt to be unfolded and loaded multiple times during the process, thereby reducing the wear of the conveyor belt.

[0022] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the device at the junction of the conveyor belt extension mechanism and the main conveyor belt in a technical solution of the present invention;

[0024] Figure 2 It is a schematic diagram of the force on the belt body of a tube-belt conveyor belt;

[0025] Figure 3 It is an overall schematic diagram of a technical solution of the present invention and a schematic diagram of the force on the main conveyor belt body;

[0026] Figure 4 It is a side view of the device at the junction of the conveyor belt extension mechanism and the main conveyor belt in one technical solution of the present invention;

[0027] Figure 5 It is a structural schematic diagram of position A in a technical solution of the present invention;

[0028] Figure 6 It is a cross-sectional schematic diagram of the first frame in a technical solution of the present invention;

[0029] Figure 7 It is a cross-sectional schematic diagram of the second frame in a technical solution of the present invention;

[0030] Figure 8 It is a cross-sectional schematic diagram of the third frame in a technical solution of the present invention;

[0031] Fig. 9 It is a top view of the device at the junction of the conveyor belt extension mechanism and the main conveyor belt in one technical solution of the present invention;

[0032] Fig.10 It is a side schematic diagram of a conveyor belt range extension mechanism in a technical solution of the present invention;

[0033] Fig.11 This is a schematic diagram of the connection between the extended-range friction belt and the hanging rail in a technical solution of the present invention;

[0034] Fig.12 It is a schematic diagram of position B-details in a technical solution of the present invention;

[0035] Fig.13 It is a three-view drawing of a hanging rail pulley in a technical solution of the present invention;

[0036] Fig.14 The present invention is a schematic diagram of a process in which a range-extending friction belt wraps around a conveyor belt in a technical solution of the present invention.

[0037] Legend: 1-main conveyor belt, 11-main drive roller, 12-auxiliary roller, 2-conveyor belt range extension mechanism, 21-range extension friction belt, 22-intermediate drive roller, 23-intermediate auxiliary roller, 201-straight belt section, 202-adjustment belt section, 203-grip belt section, 210-lifting hole, 211-lifting ring, 231-first limit roller, 232-auxiliary roller group, 24-second limit roller, 3-support frame, 31-first frame, 32-second frame, 33-third frame, 4-hanging rail, 40-guide groove, 401-walking rail, 41-guide pulley, 411-walking wheel, 412-limiting wheel, 413-connecting shaft, 414-limiting wheel fixing plate, 415-hook, 416-first chain, 417-chain fixing column, 42-second chain, 5-conventional roller group, 51-adjustment section limiting roller, 52-supporting roller group. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can implement the invention with reference to the description.

[0039] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0040] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0041] like Figures 1 to 14 As shown, the technical solution of the present application provides an adaptive long-distance circular tube belt conveyor device, including: a set of circular tube belt conveyors, which include a main drive roller 11 and an auxiliary roller 12, a main conveyor belt 1 connected end to end and wound around the main drive roller 11 and the auxiliary roller 12, the main conveyor belt 1 is rotated by the main drive roller 11 and the auxiliary roller 12 to circulate circumferentially, and the section of the main conveyor belt 1 between the main drive roller 11 and the auxiliary roller 12 for carrying materials is bent into a circular tube; one or more conveyor belt range extension mechanisms 2, which are arranged below the circular tube-shaped main conveyor belt 1, the conveyor belt range extension mechanism 2 includes an intermediate drive roller 22 and an intermediate auxiliary roller 23, there is an extended-range friction belt 21 connected end to end and wound around the intermediate drive roller 22 and the intermediate auxiliary roller 23 and rotated circumferentially by the rotation of the intermediate drive roller 22, the upper surface of the extended-range friction belt 21 is in close contact with the outer periphery of the main conveyor belt 1 and moves in the same direction and at the same speed as the main conveyor belt 1.

[0042] In the present technical scheme, the circular tube belt conveyor can be regarded as a conventional belt conveyor belt with a single drive device. The main conveyor belt 1 performs circumferential motion under the rotation of the main driving roller 11 and the adjustment and reversing of the auxiliary roller 12. The material falls onto the main conveyor belt 1 from one end of the auxiliary roller 12. The main conveyor belt 1 is bent on both sides by the matching roller group and becomes a tube. The main conveyor belt 1 curled into a tube at the end of the main driving roller 11 is unfolded again by the matching roller group and completes the unloading. In addition to driving the main conveyor belt 1 to rotate, the main driving roller 11 also plays the function of reversing the main conveyor belt 1. The main conveyor belt 1 moves toward the auxiliary roller 12 to complete the cycle of loading and unloading. The conveyor belt range extension mechanism 2 can be regarded as a small circular tube belt conveyor, which is arranged below the tubular main conveyor belt 1, wherein the conveyor belt range extension mechanism 2 can adopt a hanging tube belt conveying method or use rollers to roll the tube. The extended-range friction belt 21 is transformed from a straight state to a circular or semicircular state under the action of external force and is wrapped around the outer periphery of the tubular main conveyor belt 1. When the extended-range friction belt 21 is fully wrapped around the outside of the main conveyor belt 1, the load of the main conveyor belt 1 is borne by the extended-range friction belt 21. In the process of wrapping the main conveyor belt 1, the extended-range friction belt 21 can be supported by rails or roller groups to bear the material load. In the present technical solution, the setting position and length of the multiple groups of conveyor belt extended-range mechanisms 2 equipped with the circular tube belt conveyor need to be strictly adjusted according to the transportation plan. The main drive roller 11 and the intermediate drive roller 21 are relatively dispersed, and the operating status of each drive roller 11 needs to be monitored to ensure the coordinated work of each drive device. Optionally, the forward speed of the extended-range friction belt 1 can be adjusted according to factors such as the strength and length of the main conveyor belt 1, so that it is slightly faster than the speed of the main conveyor belt 1.

[0043] In the present technical scheme, the main conveyor belt 1 and the extended-range friction belt 21 are both made of rubber, nylon and steel strands, and have strong viscoelasticity under normal temperature and elastic force. When the two have a tendency to move relative to each other, friction is generated on their joint surface. The friction between the extended-range friction belt 21 and the main conveyor belt 1 is used to transmit the power of the intermediate drive roller 22 to the main conveyor belt 1. The conveyor belt extended-range mechanism 2 and the main drive roller 11 work together to make the main conveyor belt 1 operate to transport materials. The conveyor belt extended-range mechanism 2 is arranged in the middle section along the belt conveyor, so that the driving power is relatively dispersed, the maximum tension of the main conveyor belt 1 during operation is reduced, and the selection strength of the main conveyor belt 1 is correspondingly reduced, and the conveying capacity of the circular tube belt conveyor is improved, so that it can achieve the purpose of long-distance and large-volume transportation. During the transportation process, the main conveyor belt 1 will not be unfolded and unloaded multiple times during the whole process. The materials remain in a closed state during the whole process and will not generate dust or other environmental pollution. No other devices except the driving device are introduced, and the damage to the main conveyor belt 1 is minimized.

[0044] In another technical solution, Figure 3 , 4As shown in Figures 5 and 6, the extended-range friction belt 21 and the main conveyor belt 1 move in the same direction as the belt body, which are a straight belt section 201, an adjustment belt section 202 and a gripping belt section 203 in sequence along the direction of movement. The main conveyor belt 1 on the straight belt section 201 is passed through conventional roller groups 5 arranged at intervals, the straight belt section 201 is lower than the conventional roller group 5, the gripping belt section 203 is attached to the outer periphery of the main conveyor belt 1, and auxiliary roller groups 232 are arranged below the adjustment belt section 202, which are spaced apart and sequentially lifted in the direction of movement of the main conveyor belt 1, wherein the auxiliary roller group 232 bends and lifts the extended-range friction belt 21 until the extended-range friction belt 21 is completely wrapped around the outer periphery of the main conveyor belt 1, and a first limiting roller 231 is arranged above the straight belt section 201 so that the straight belt section 201 is not lifted and deformed by the auxiliary roller group 232.

[0045] In the present technical scheme, the conventional roller group 5 is in the form of an existing conventional hexagonal or triangular roller group, wherein the extended-range friction belt 21 is reversed by the intermediate auxiliary roller 23 to move in the same direction as the main conveyor belt 1 and is under the conventional roller group 5, and the conventional roller group 5 is stopped at the junction of the adjustment section belt body 202 and the straight section belt body 201, and the pipe section after the main conveyor belt 1 is directly supported by the extended-range friction belt 21, and the straight section belt body 201 is changed obliquely upward by the first limiting roller 231 and the auxiliary roller group 232 until it contacts the main conveyor belt 1, and the auxiliary roller group 232 is responsible for lifting the extended-range friction belt 21 and rolling up both sides of the extended-range friction belt 21 during the lifting process to adapt it to the main conveyor belt 1, and the gripping section belt body 203 of the extended-range friction belt 21 can be supported by setting roller groups under and on both sides of the belt body, or by using rail lifting on both sides of the belt body.

[0046] In another technical solution, the gripping section belt body 203 and the corresponding main conveyor belt 1 are supported by a support roller group 51 arranged at intervals, wherein the support roller group 51 not only bears the load but also ensures that the part of the main conveyor belt 1 on the gripping section belt body 203 does not turn outward.

[0047] In another technical solution, two sets of symmetrical hanging rails 4 are provided on the periphery of the extended-range friction belt 21, and a plurality of spaced hanging rail pulleys 41 are slidably fixed on each set of hanging rails 4, and the hanging rail pulleys 41 are connected to the edges of the corresponding sides of the extended-range friction belt 21 by hinges, wherein the extended-range friction belt 21 drives the hanging rail pulleys 41 on both sides to perform circumferential movement on the hanging rails 4, and the two sets of hanging rails 41 change the spacing so that the suspended extended-range friction belt 21 is horizontally straightened or naturally bent, and the two sets of hanging rails 4 located above the adjustment section belt body 202 are gradually lifted and the spacing is reduced along the movement direction of the extended-range friction belt 21, so that the extended-range friction belt 21 is completely wrapped around the periphery of the main conveyor belt 1, and the supporting roller shaft group 52 needs to be appropriately adjusted according to the installation position of the hanging rail 4.

[0048] In the present technical scheme, a rail lifting method is adopted to partially carry and pull the extended-range friction belt 21 to move upward and bend, and two sets of hanging rails 4 are arranged in a circle along the extended-range friction belt 21, and its cross-section can be an I-shaped rail or a square tube rail. A single hanging rail pulley 41 can perform a circular motion along the hanging rail 4, and the hanging rail pulley 4 is connected to the edge of the extended-range friction belt 21 through a chain. The two sets of hanging rails 4 located on the adjustment section belt body 202 and the wrapping section belt body 203 are heightened and retracted as needed, and the connecting chain between the hanging rail pulley 41 and the extended-range friction belt 21 is always kept in a straight state, while the connecting chain between the extended-range friction belt 21 that moves in the opposite direction to the main conveyor belt 1 and the matching hanging rail pulley 41 can be in a relaxed state.

[0049] In another technical solution, lifting holes 210 are provided at intervals along the circumferential direction on both edges of the extended-range friction belt 21, and lifting rings 211 are provided inside the lifting holes 210, which correspond one-to-one to the hanging rail pulley 41 and are connected by hinges. An annular gasket can be installed in the lifting hole 210, and the lifting ring 211 directly acts on the annular gasket to avoid wear of the extended-range friction belt 21 due to long-term use of the lower lifting ring 211.

[0050] In another technical solution, a plurality of support frames 3 are arranged at intervals under the main conveyor belt 1, which are steel frames with crossbeams connected to the tops of two columns. The extended-range friction belt 21 is located between the columns of the support frame 3 in the opposite direction of the movement direction of the main conveyor belt 1. The support frame 3 is divided into a first frame 31, a second frame 32, and a third frame 33 corresponding to the straight section belt body 201, the adjustment section belt body 202, and the wrapping section belt body 203. The conventional roller group 5, the auxiliary roller group 232, and the supporting roller group 52 are respectively fixed on the top of the first frame 31, the second frame 32, and the third frame 33.

[0051] In the present technical solution, the extended-range friction belt 21 and the belt body that moves in the opposite direction to the main conveyor belt 1 can be supported by the second limiting roller 24 fixed on the support frame 3, and the hanging rail 4 is fixed to the support frame 3 by welding or bolting with steel sections. Adjacent support frames 3 can be connected by adding crossbeams to further improve the overall strength. Among them, all first frames 31 have the same specifications and sizes, and all third frames 33 have the same size. Some second frames 32 support auxiliary roller groups 232 for lifting the extended-range friction belt 21, so the height of the crossbeam position needs to be appropriately adjusted. When the main conveyor belt 1 on the adjustment section belt body 202 is long and needs to be supported by a structure, a cantilever structure can be set on the last first frame 33 to additionally fix the conventional roller group 5. Optionally, an adjustment section limiting roller 51 can be added to the second frame 32 to press the joints on both sides of the main conveyor belt 1 to prevent it from turning over.

[0052] In another technical solution, the cross-section of the hanging rail 4 is rectangular frame-shaped, and a guide groove 40 is opened along the side wall of the hanging rail 4 facing the extended-range friction belt 21. The plates on both sides of the guide groove 40 are walking rails 401. The hanging rail pulley 41 includes two walking wheels 411, which roll along the walking rails 401 in the hanging rail 4. A connecting shaft 413 is connected between the two walking wheels 411. The lifting ring 211 and the connecting shaft 413 are connected by a first chain 416. The first chain 416 passes through the guide groove 40. The connecting shaft 413 connects the walking wheels 411 on both sides, and each walking wheel 411 is matched to travel on the walking rail 401. The middle part of the connecting shaft 413 is connected to a downward bearing connected to a hook 415, and the first chain 416 is connected between the hook 415 and the lifting ring 211.

[0053] In another technical solution, the hanging rail pulley 41 also includes a limiting wheel 412, which is matched and rotatably clamped in the guide groove 40, and the connecting shaft 413 is located on both sides of the hook 415. Each bearing is connected to a limiting wheel fixing plate 414, and the bottoms of the two limiting wheel fixing plates 414 are connected. The limiting wheel 412 bearing is fixed under the limiting wheel fixing plate 414, and the limiting wheel 412 is located in the guide groove 40. When the hanging rail 4 is adjusted horizontally, the limiting wheel 412 is guided by the guide groove 40.

[0054] In another technical solution, a second chain 42 is connected between adjacent hanging rail pulleys 41 in the same hanging rail 4, and the second chain 42 is kept in a straightened state. During the operation of the conveyor belt range extension mechanism 2, the distance between adjacent hanging rail pulleys 41 remains unchanged.

[0055] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Adaptive long distance tube belt conveyor device, characterized in that: include; A set of circular tube belt conveyor, comprising a main driving roller (11) and an auxiliary roller (12), a main conveyor belt (1) connected end to end and wound around the main driving roller (11) and the auxiliary roller (12), the main conveyor belt (1) rotates circumferentially due to the rotation of the main driving roller (11), and the section of the main conveyor belt (1) between the main driving roller (11) and the auxiliary roller (12) for carrying materials is bent into a circular tube shape; One or more conveyor belt range extension mechanisms (2) are arranged below a cylindrical main conveyor belt (1), wherein the conveyor belt range extension mechanism (2) comprises an intermediate drive roller (22) and an intermediate auxiliary roller (23), and an extended-range friction belt (21) connected end to end and wound around the intermediate drive roller (22) and the intermediate auxiliary roller (23) and rotated in a circumferential direction by the rotation of the intermediate drive roller (22), wherein the upper surface of the extended-range friction belt (21) is closely attached to the outer periphery of the main conveyor belt (1) and moves in the same direction and at the same speed as the main conveyor belt (1).

2. The adaptive long-distance tube belt conveyor device according to claim 1, characterized in that: The extended-range friction belt (21) and the belt body that moves in the same direction as the main conveyor belt (1) are, in order along the moving direction, a straight belt section (201), an adjustment belt section (202), and a gripping belt section (203); the main conveyor belt (1) located on the straight belt section (201) is inserted between conventional roller groups (5) that are arranged at intervals; the straight belt section (201) is lower than the conventional roller group (5); the gripping belt section (203) is attached to the outer periphery of the main conveyor belt (1); and the adjustment belt section (202) is arranged at an angle to the outer periphery of the main conveyor belt (1). Auxiliary roller groups (232) are provided below the body (202) at intervals and are sequentially lifted in the direction of movement of the main conveyor belt (1), wherein the auxiliary roller groups (232) cause the extended-range friction belt (21) to bend and lift until the extended-range friction belt (21) is completely wrapped around the outer periphery of the main conveyor belt (1), and a first limiting roller (231) is provided above the straight section belt body (201) so that the straight section belt body (201) is not lifted or deformed by the auxiliary roller groups (232).

3. The adaptive long-distance tube belt conveyor device according to claim 2, characterized in that: The gripping section belt body (203) and the corresponding main conveyor belt (1) are supported by support roller shaft groups (51) arranged at intervals.

4. The adaptive long-distance round tube belt conveyor device according to claim 2, characterized in that: Two sets of symmetrical hanging rails (4) are arranged on the periphery of the extended-range friction belt (21), and a plurality of spaced hanging rail pulleys (41) are slidably fixed on each set of hanging rails (4), and the hanging rail pulleys (41) are connected to the edges of the corresponding sides of the extended-range friction belt (21) through hinges, wherein the extended-range friction belt (21) drives the hanging rail pulleys (41) on both sides to perform circumferential movement on the hanging rails (4), and the two sets of hanging rails (41) change the spacing so that the suspended extended-range friction belt (21) is horizontally straightened or naturally bent downward, and the two sets of hanging rails (4) located above the adjustment section belt body (202) are gradually lifted along the movement direction of the extended-range friction belt (21) and the spacing is reduced, so that the extended-range friction belt (21) is completely wrapped around the periphery of the main conveyor belt (1).

5. The adaptive long-distance round tube belt conveyor device according to claim 4, characterized in that: The two edges of the extended-range friction belt (21) are provided with lifting holes (210) spaced apart along the circumferential direction, and lifting rings (211) are inserted therein, which correspond one to one with the lifting rail pulleys (41) and are connected via hinges.

6. The adaptive long-distance tube belt conveyor device according to claim 5, characterized in that: A plurality of support frames (3) are arranged at intervals below the main conveyor belt (1), which are steel frames with two columns connected to the top of a crossbeam; the extended-range friction belt (21) is located between the columns of the support frame (3) in the direction opposite to the movement direction of the main conveyor belt (1); the support frame (3) is divided into a first frame (31), a second frame (32), and a third frame (33) corresponding to the straight section belt body (201), the adjustment section belt body (202), and the gripping section belt body (203); a conventional roller group (5), an auxiliary roller group (232), and a supporting roller group (52) are respectively fixed to the top of the first frame (31), the second frame (32), and the third frame (33).

7. The adaptive long-distance tube belt conveyor device according to claim 5, characterized in that: The cross section of the hanging rail (4) is in the shape of a rectangular frame. A guide groove (40) is provided along the entire side wall of the hanging rail (4) facing the extended-range friction belt (21). The plates on both sides of the guide groove (40) are running rails (401). The hanging rail pulley (41) includes two running wheels (411), which roll along the running rails (401) in the hanging rail (4). A connecting shaft (413) is connected between the two running wheels (411). The hanging ring (211) and the connecting shaft (413) are connected by a first chain (416), and the first chain (416) passes through the guide grooves (40).

8. The adaptive long-distance tube belt conveyor device according to claim 7, characterized in that: The hanging rail pulley (41) further comprises a limiting wheel (412) which is matched and rotatably clamped in the guide groove (40).

9. The adaptive long-distance tube belt conveyor device according to claim 7, characterized in that: A second hinge (42) is connected between adjacent hanging rail pulleys (41) in the same hanging rail (4).

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