A multi-section telescoping conveyor

Abstract

The application discloses a multi-section telescopic conveying device, which comprises a plurality of body sections, a locking mechanism and a reset and correction mechanism. The walking unit of the first body section comprises two power wheels and a supporting wheel, three ground-contacting walking parts form a supporting plane to ensure contact with the ground, and the two power wheels rotate synchronously. The locking mechanism locks any body section with the next body section after the body section is extended to a preset extension position and is tensioned to a straight state, so that the locked body section drives the next body section to continue to extend as a rigid tension transmission part, thereby realizing the step-by-step tensioning and straightening and step-by-step locking of the body sections. The reset and correction mechanism guides and resets the body sections to a preset initial state in sequence when retracting. The application ensures straight walking through three-point support, guarantees the overall straightness through step-by-step tensioning and straightening, and eliminates the cumulative deviation through the reset and correction mechanism, effectively solving the problems that the multi-section telescopic conveying device is prone to deviation and the straightness is difficult to guarantee during the extension and retraction.

Description

Technical Field

[0001] This invention belongs to the field of conveying equipment technology, and particularly relates to a multi-section telescopic conveying device. Background Technology

[0002] Multi-section telescopic conveyor equipment is widely used in long-distance material transportation, loading and unloading, and operations that cross height differences. It can change the working length of the whole machine by sequentially attaching multiple body sections along the telescopic direction and displacing them relative to each other, thereby adapting to spatial changes in different working interfaces such as carriages, silos, and ship holds.

[0003] In existing multi-section telescopic conveyor systems, the telescopic drive of the machine body mainly employs hydraulic cylinders combined with wire rope or chain traction, or rack and pinion transmissions. However, these structures place high demands on coaxiality, motion synchronization, end-point positioning accuracy, and overall rigidity during the telescopic process. Specifically, wire rope and chain transmissions experience decreased operational stability and insufficient synchronization control precision as the number of telescopic sections increases and the transmission stroke lengthens. Rack and pinion transmissions, on the other hand, have stringent assembly precision requirements and are unsuitable for applications where there are significant height differences within the machine body. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-section telescopic conveyor to solve the problems of deviation and difficulty in ensuring the straightness of the conveyor track during the telescopic process of existing multi-section telescopic conveyors.

[0005] The technical solution of this invention is as follows: A multi-section telescopic conveyor device, comprising: The fuselage consists of multiple sections, which are sequentially fitted together along the telescopic direction and can be displaced relative to each other along the telescopic direction. Furthermore, in the extension direction of adjacent fuselage sections, the preceding fuselage section has a preset extension position relative to the following fuselage section. The first fuselage section of the multi-section fuselage has a walking unit comprising three ground-touching walking components. These three components are configured to form a support plane when the first fuselage section touches the ground, ensuring that all three components remain in contact with the ground. Each of the three ground-touching walking components includes two drive wheels and one support wheel. The rotation axes of the two drive wheels coincide and are perpendicular to the extension direction. The two drive wheels rotate synchronously. The support wheel is located behind the drive wheels in the extension direction, and the distance between the projection of the support wheel and the projection of the two drive wheels in the support plane is equal. At least one locking mechanism is provided between adjacent fuselage sections. The locking mechanism is configured such that after any fuselage section extends to the preset extension position and is tensioned to a straight state, it locks the fuselage section adjacent to the next fuselage section in the extension direction. The locked fuselage section acts as a rigid tension transmission component to drive the adjacent next fuselage section to continue extending. In this way, each fuselage section is tensioned and locked section by section, and the power wheel on the first fuselage section drives each locked fuselage section to synchronously perform an extension or retraction action. The reset and correction mechanism is configured to sequentially guide the unlocked fuselage sections when the multi-section fuselage is retracted, so that the multi-section fuselage reaches a preset initial state when it retracts into place.

[0006] Preferably, the reset and correction mechanism includes a ground guide section, which includes a guide rail laid on the ground along the telescopic direction and a guide fitting disposed at the bottom of each fuselage section; the guide fitting is configured to sequentially enter the guide rail when the multiple fuselage sections perform a retraction action, and to forcefully guide and reset each fuselage section through the guide rail so that the multiple fuselage sections reach a preset initial state when they retract into place.

[0007] Preferably, the guide fitting is a guide wheel unit disposed at the bottom of each of the fuselage sections, and the guide wheel unit includes at least one ground rail guide wheel adapted to the guide rail.

[0008] Preferably, the reset and correction mechanism includes a fuselage guide portion disposed on the top of each of the multiple fuselage sections except the first fuselage section. The fuselage guide portion includes a plurality of side guide wheels. The side guide wheels are configured to guide the preceding fuselage section from the side of the preceding fuselage section after any fuselage section unlocks from the preceding fuselage section adjacent to it in the extension direction during the retraction action of the multiple fuselage sections, so that the multiple fuselage sections reach a preset initial state when they retract into place.

[0009] Preferably, in the preset initial state of the multiple fuselage sections, the fuselage guide portion on any fuselage section includes side guide wheels located on both sides of the preceding fuselage section in the extension direction, and the side guide wheels located on the same side of the preceding fuselage section are arranged along the extension direction.

[0010] Preferably, the side guide wheels on both sides of the same fuselage section are arranged symmetrically; the span between the two side guide wheels at the beginning and end along the telescopic direction on the same fuselage section is configured such that the angular deviation of the previous fuselage section between the two side guide wheels at the beginning and end when the previous fuselage section retracts into place in the telescopic direction is limited to a preset tolerance range.

[0011] Preferably, the first section of the fuselage is further provided with a travel driver. The output end of the travel driver is connected to a transmission shaft and drives the transmission shaft to rotate. The transmission shaft is perpendicular to the telescopic direction. The transmission shaft is connected to two power wheels respectively. The two power wheels are configured to be driven synchronously by the transmission shaft.

[0012] Preferably, it also includes a counterweight unit, which is disposed in the first fuselage section to increase the positive pressure between the two drive wheels and the ground.

[0013] Preferably, the locking mechanism includes a drive unit disposed on a rear fuselage section along the extension direction, a locking member driven by the drive unit, and a mating unit disposed on a front fuselage section along the extension direction and correspondingly mating with the locking member. The drive unit is used to drive the locking member to extend into the mating unit to lock the front fuselage section along the extension direction to the rear fuselage section, or to drive the locking member to exit the mating unit to release the locking between two adjacent fuselage sections.

[0014] Preferably, the first fuselage section is further provided with a plurality of auxiliary traveling components for auxiliary support when the first fuselage section is tilted, and there is a gap between the auxiliary traveling components and the support plane.

[0015] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: (1) The first section of the multi-section telescopic conveyor provided by the present invention adopts three ground-contacting walking parts (two power wheels and one support wheel). By utilizing the geometric principle that three points determine a plane (i.e. the support plane), the three ground-contacting parts of the first section of the machine will always maintain full contact with the ground when the first section of the machine is moving. This avoids the problem that the first section of the machine will deviate in the direction of movement because a wheel suddenly does not make full contact with the ground and spins and slips. (If the first section of the machine has four or more ground-contacting walking parts, the ground on the walking path can generally only be guaranteed to be roughly stable and cannot be guaranteed to be an absolute plane. Therefore, when encountering slight unevenness, the ground-contacting parts on the first section of the machine may not make full contact with the ground and spin and slip, causing the first section of the machine to deviate in the direction of movement.) This ensures that the first section of the machine can move in a straight line along the telescopic direction.

[0016] (2) The present invention adopts a segmented extension method, that is, the first fuselage segment extends relative to the adjacent rear fuselage segment until it extends to the preset extension position (i.e., it extends to the end) and is tensioned to a straight state (the first fuselage segment is ensured to travel in a straight line along the extension direction by three ground-feeting walking parts. When the first fuselage segment extends to the preset position relative to the rear fuselage segment, the first fuselage segment and the rear fuselage segment are tensioned and both are kept in a straight line along the extension direction). Then it is locked by the locking mechanism. The fuselage section and the next fuselage section become a whole. When the power wheel on the first fuselage section rotates, it drives the whole to move forward in the extension direction. When the fuselage section at the end of the whole extends to the preset extension position relative to the next fuselage section and is tensioned to a straight state, the two are locked by the locking mechanism to become a new whole (that is, each subsequent fuselage section drives the next fuselage section adjacent to it to extend through the locked previous fuselage section as a rigid tension transmission component). This process is repeated so that each fuselage section is tensioned and straightened and locked section by section. Unlike the traditional overall synchronous stretching method (i.e., multiple body sections extend outwards simultaneously, in which case the middle body section is prone to bending and lateral displacement before being tightened, and the initial small displacement will be amplified and accumulated along each body section, eventually causing the entire multi-section telescopic conveyor to deviate from the preset straight direction), this invention adopts a segmented tightening method of "stretching the next section after straightening one section", which fundamentally ensures the straightness of the multi-section body section after unfolding, thereby ensuring the straightness of the conveyor track.

[0017] (3) In some embodiments of the multi-section telescopic conveyor based on the present invention, a reset and correction mechanism is provided, comprising a ground guide section and a body guide section. A guide rail is laid on the ground along the telescopic direction, and a guide fitting (specifically a ground rail guide wheel) is provided at the bottom of each body section. When the equipment retracts, each guide fitting enters the guide rail in sequence, and the guide rail forces the body section to be guided and reset, thereby effectively offsetting the cumulative positional deviation generated during the telescopic and traveling process. Even if a slight deviation occurs during the telescopic and traveling process, the guide rail can guide and reset the return stroke, so that the benchmark for each operation can still be unified, ensuring stable and reliable alignment accuracy for long-term use. Meanwhile, the fuselage guide section includes several side guide wheels set on the fuselage section, which guide the previous fuselage section in the extension direction when it retracts, further ensuring that each fuselage section is accurately aligned when it retracts into place; moreover, each fuselage section is set to be relatively long, which makes the span between the two side guide wheels at the beginning and end of the fuselage section large (up to 4 meters or more). Therefore, the small offset of the fuselage section in the direction perpendicular to the extension direction when it retracts is extremely small in terms of angular error caused by the long span, thereby achieving high precision in reset positioning.

[0018] (4) In some embodiments of the multi-section telescopic conveyor based on the present invention, by setting a counterweight on the first section of the machine body, the gravity is concentrated on the power wheel, increasing the friction between the power wheel and the ground, further reducing the chance of slippage, and meeting the force requirements under the climbing condition.

[0019] (5) In some embodiments of the multi-section telescopic conveyor based on the present invention, by setting several auxiliary walking parts with a pre-reserved gap between the first section of the machine body and the ground (the ground and the support plane are roughly coincident), the first section of the machine body is assisted in limiting the tilt when it tilts, effectively controlling the tilt amplitude of the first section of the machine body, preventing it from overturning, and improving the safety of the equipment operation. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

[0021] Figure 1 This is a schematic diagram of a multi-section telescopic conveyor device in a preset initial state according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of a multi-section telescopic conveyor device according to Embodiment 1 of the present invention when all sections of the machine body are extended into place; Figure 3 This is a partial schematic diagram of the front end of the first section of the body in a multi-section telescopic conveyor according to Embodiment 1 of the present invention; Figure 4 This is a partial schematic diagram of one section of a multi-section telescopic conveyor device according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the unlocking state of the locking mechanism in a multi-section telescopic conveyor according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the locking state of the locking mechanism in a multi-section telescopic conveyor according to Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the ground rail guide unit entering the guide rail in a multi-section telescopic conveyor according to Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the body climbing state of a multi-section telescopic conveyor according to Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the supporting unit and the bottom guide portion of a multi-section telescopic conveyor according to Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the side guide wheel of a multi-section telescopic conveyor according to Embodiment 2 of the present invention; Figure 11This is a schematic diagram of the inclined conveying mechanism of Embodiment 3 of the present invention; Figure 12 This is another schematic diagram of the multi-section telescopic conveyor device of Embodiment 3 of the present invention; Figure 13 This is a cross-sectional view of the lifting structure of Embodiment 3 of the present invention; Figure 14 This is a schematic diagram of the retracted state of the multi-section telescopic conveyor equipment in Embodiment 3 of the present invention; Figure 15 This is a schematic diagram of the multi-section telescopic conveyor body climbing uphill in Embodiment 3 of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Body section; 2. First body section; 3. Power wheel; 4. Support wheel; 5. Drive unit; 6. Locking component; 7. Extending pin hole; 8. Guide rail; 9. Ground rail guide wheel; 10. Side guide wheel; 11. Travel drive; 12. Drive shaft; 13. Auxiliary travel component; 14. Support unit; 15. Support roller; 16. Support component; 17. Bottom guide section; 18. Bottom guide mating component; 19. Loading body section; 20. Transport body section; 21. Conveyor belt; 22. Front roller; 23. Gap maintaining unit; 24. Tooth; 25. Front tooth surface; 26. Rear tooth surface; 27. Retracting pin hole. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, components with the same structure or function are shown only schematically, or only one is labeled.

[0025] In the description of this invention, the term "a" not only means "only one" but can also mean "more than one". The terms "first", "second", "third", etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. The terms "perpendicular" and "parallel" do not mean absolutely perpendicular or parallel, but can be approximately perpendicular or approximately parallel.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Example 1 See Figures 1 to 7 This embodiment provides a multi-section telescopic conveyor, including a multi-section body section 1, a locking mechanism, and a reset and correction mechanism. It should be noted that, unless otherwise specified, "front" and "rear" in this embodiment refer to the orientation in the extension direction.

[0028] The multiple fuselage sections 1 are sequentially fitted together along the telescopic direction and can be displaced relative to each other along the telescopic direction. Furthermore, in adjacent fuselage sections 1, the preceding fuselage section in the extension direction has a preset extension position relative to the following fuselage section. Here, the extension direction refers to the direction in which the multiple fuselage sections 1 expand outward from their retracted state, and the preset extension position refers to the designed position of the preceding fuselage section relative to the following fuselage section in the extension direction.

[0029] The running gear unit of the first fuselage section 2 in the multi-segment fuselage section 1 includes three ground-reaching running gears. These three running gears are configured to form a support plane when the first fuselage section 2 touches the ground, ensuring that all three running gears remain in contact with the ground. The support plane refers to the plane defined by the three contact points between the three running gears and the ground.

[0030] The three ground-mounted walking components include two drive wheels 3 and one support wheel 4. The rotation axes of the two drive wheels 3 coincide and are perpendicular to the extension direction. The two drive wheels 3 rotate synchronously. The support wheel 4 is located behind the drive wheels 3 in the extension direction, and the distance between the projection of the support wheel 4 and the projection of the two drive wheels 3 in the support plane is equal—that is, the support wheel 4 is located on the perpendicular line between the two drive wheels 3. The three components form an isosceles triangle layout. The multi-section telescopic conveyor in this embodiment utilizes three ground-contacting walking components (two power wheels 3 and one support wheel 4). Using the geometric principle that three points determine a plane (i.e., the support plane), it ensures that all three ground-contacting components maintain full contact with the ground during the movement of the first section 2. This avoids the problem of a wheel suddenly not making sufficient contact with the ground and slipping, causing the first section 2 to deviate in its direction of travel. (If the first section 2 has four or more ground-contacting walking components, the ground along the path can generally only be roughly stable and not absolutely flat. Therefore, when encountering slight unevenness, some ground-contacting walking components on the first section 2 may not make sufficient contact with the ground and slip, causing the first section 2 to deviate in its direction of travel.) This ensures that the first section 2 can travel in a straight line along the telescopic direction.

[0031] Specifically, the first fuselage section 2 is equipped with a travel driver 11. The output end of the travel driver 11 is connected to a transmission shaft 12 and drives the transmission shaft 12 to rotate. The transmission shaft 12 is perpendicular to the extension / retraction direction. The transmission shaft 12 is connected to two drive wheels 3, which are configured to be synchronously driven by the transmission shaft 12. The travel driver 11 can be a servo motor or the like (the travel driver 11 and the transmission shaft 12 can be transmitted through a gear set or the like). The rotational power is synchronously transmitted to the two drive wheels 3 through the transmission shaft 12, ensuring that the speed and torque of the two drive wheels 3 are completely consistent. This ensures that the first fuselage section 2 travels in a straight line and avoids deflection caused by inconsistent speeds of the drive wheels 3 on both sides.

[0032] Preferably, a counterweight unit can be installed on the first section of the fuselage 2 to increase the normal pressure between the two drive wheels 3 and the ground. The addition of the counterweight unit concentrates the center of gravity of the first section of the fuselage 2 primarily on the drive wheels 3, increasing the adhesion between the drive wheels 3 and the ground. This effectively reduces the possibility of slippage of the drive wheels 3 during the extension and movement of multi-section telescopic conveyors on slopes or gradients, meeting the traction requirements under various working conditions. The counterweight unit can be a counterweight block or similar material fixedly installed on the first section of the fuselage 2, and its weight can be set according to actual operational needs. This invention does not limit the specific form or weight of the counterweight unit.

[0033] Preferably, the first fuselage section 2 may also be provided with several auxiliary traveling members 13. These auxiliary traveling members 13 have a gap (e.g., approximately 1 to 2 centimeters) between themselves and the supporting plane, meaning that the auxiliary traveling members 13 do not contact the ground when the first fuselage section 2 is moving normally horizontally. When the first fuselage section 2 tilts due to uneven ground or lateral forces, the auxiliary traveling members 13 contact the ground to provide auxiliary support, limiting the tilting amplitude of the first fuselage section 2, preventing the equipment from overturning, and improving operational safety. The auxiliary traveling members 13 can be omnidirectional wheels or directional wheels, etc. In this embodiment, such as... Figure 3 As shown, an auxiliary walking component 13 is provided on each side of the support wheel 4.

[0034] A locking mechanism is provided between adjacent fuselage sections 1. The locking mechanism is configured such that after any fuselage section 1 extends to a preset extension position and is tensioned to a straight state, it locks the fuselage section with the adjacent fuselage section in the extension direction. The locked fuselage section acts as a rigid tension transmission component to drive the adjacent fuselage section to continue extending. In this way, each fuselage section is tensioned, straightened and locked section by section. The power wheel 3 on the first fuselage section 2 drives the locked fuselage sections to perform extension or retraction actions synchronously. That is, the first fuselage section 2 extends relative to the adjacent rear fuselage section until it extends to the preset extension position (i.e., it is fully extended) and is tensioned to a straight state (the first fuselage section 2 is ensured to move in a straight line along the extension direction by three ground-mounted walking parts. When the first fuselage section 2 extends to the preset position relative to the rear fuselage section, the first fuselage section 2 and the rear fuselage section are tensioned and both are kept in a straight line along the extension direction). Then it is locked by the locking mechanism. Then the first fuselage section 2 locked by the locking mechanism and the rear fuselage section become a whole. When the power wheel 3 on the first fuselage section 2 rotates, it drives this whole to move forward in the extension direction. When the fuselage section at the end of the whole extends to the preset extension position relative to the rear fuselage section and is tensioned to a straight state, the two are locked by the locking mechanism to become a new whole. This process is repeated so that each fuselage section 1 is tensioned and straightened and locked section by section. This segmented, section-by-section extension method differs fundamentally from the traditional synchronous overall stretching method. In the traditional method, each section of the fuselage extends outward simultaneously, and the middle section is prone to bending and shifting when not tensioned. However, this embodiment adopts a segmented tensioning method of "stretching one section before stretching the next." Each section reaches a straight tension state before locking, and after locking, it acts as a rigid component to transmit tension. This fundamentally ensures the straightness of the unfolded multi-section fuselage 1, thereby ensuring the straightness of the conveyor track. Tensioning to a straight state means that after fuselage section 1 extends to its position, the continued drive of the power wheel 3 ensures that the fuselage section reaches a tension state with the next fuselage section, eliminating slack and bending between the fuselage section itself and its adjacent sections.

[0035] Specifically, the locking mechanism includes a drive unit 5 disposed on the rear fuselage section 28 along the extension direction, a locking member 6 driven by the drive unit 5, and an extension engagement unit disposed on the front fuselage section 29 along the extension direction and correspondingly engaged with the locking member 6. Figure 5 The unlocked state of the locking mechanism is shown. Figure 6 The locked state of the locking mechanism is shown.

[0036] The drive unit 5 can be a servo electric cylinder, pneumatic cylinder, or electric push rod, etc. The locking component 6 is a pin connected to the servo electric cylinder, and the extension mating unit is an extension pin hole 7 that mates with the pin. The servo electric cylinder can precisely control the extension and retraction stroke of the pin, ensuring the reliability of locking and unlocking actions. The size of the extension pin hole 7 is configured to be slightly larger than the cross-sectional size of the pin to match the relative positional change between the pin and the extension pin hole 7 when the preceding fuselage section climbs relative to the following fuselage section 1.

[0037] When the multi-section fuselage 1 retracts, the locking mechanisms between adjacent fuselage sections 1 unlock sequentially from back to front along the extension direction. The reset and correction mechanism is configured to guide the unlocked fuselage sections 1 sequentially during the retraction process so that the multi-section fuselage 1 reaches a preset initial state when it retracts into place. The reset and correction mechanism may include a ground guide and a fuselage guide.

[0038] The ground guide section includes a guide rail 8 laid on the ground along the extension direction and guide fittings disposed at the bottom of each fuselage section 1. The guide fittings are configured to sequentially enter the guide rail 8 when the multiple fuselage sections 1 retract, forcibly guiding and resetting each fuselage section 1 through the guide rail 8 so that the multiple fuselage sections 1 reach a preset initial state when retracted. The preset initial state refers to the predetermined position and attitude state of each fuselage section 1 relative to the ground and between itself after all fuselage sections 1 have retracted, under the action of the reset and correction mechanism. Specifically, the guide fittings can be guide wheel units disposed at the bottom of each fuselage section 1, and the guide wheel unit includes at least one ground rail guide wheel 9 adapted to the guide rail 8. Figure 7 As shown, in this embodiment, the guide wheel unit includes two symmetrically arranged ground rail guide wheels 9. When the guide fitting enters the guide rail 8, the two ground rail guide wheels 9 respectively enter the guide channels on both sides of the guide rail 8.

[0039] Furthermore, when the multi-section telescopic conveyor extends, the two ground guide wheels 9 of the guide fittings on the body section 1 will first follow the guide rail 8 before leaving it. The guide rail 8 can constrain the extension trajectory of the multi-section body section 1, further ensuring that the body runs in a straight line. Since the guide rail 8 is relatively fixed in position with the ground, the reset reference for each work cycle is completely consistent. The cumulative positional deviation generated during the extension and travel processes of the multi-section telescopic conveyor is cleared to zero during the retraction reset, so that the next travel starts from the same reference, thereby ensuring the stability of the travel accuracy of the multi-section telescopic conveyor throughout its entire life cycle.

[0040] The fuselage guide is located on the top of each fuselage segment 1 except for the first fuselage segment 2. It should be noted that the fuselage guide may or may not be provided on the first fuselage segment 2, and the present invention does not impose any limitation on this. The fuselage guide includes a plurality of side guide wheels 10. The side guide wheels 10 are configured to guide the preceding fuselage segment from the side of the preceding fuselage segment during the retraction action of the multi-fuselage segment 1 after any fuselage segment 1 is unlocked from the preceding fuselage segment adjacent to it in the extension direction, so that the multi-fuselage segment 1 reaches a preset initial state when it retracts into place, further ensuring that each fuselage segment 1 is precisely aligned when it retracts into place.

[0041] Specifically, in this embodiment, in the preset initial state of the multi-section fuselage 1, the fuselage guide portion on any fuselage section 1 includes side guide wheels 10 located on both sides of the preceding fuselage section in the extension direction, and the side guide wheels 10 located on the same side of the preceding fuselage section are arranged along the extension direction. More preferably, the side guide wheels 10 on both sides of the same fuselage section 1 are symmetrically arranged; the span between the two side guide wheels 10 at the beginning and end along the extension direction on the same fuselage section 1 is configured such that the angular deviation generated by the preceding fuselage section between the two side guide wheels 10 at the beginning and end when the preceding fuselage section retracts into place in the extension direction is limited to a preset tolerance range. The larger the span, the smaller the angular deviation generated under the same offset—for example, the span can reach several meters, and even if there is a lateral offset of several millimeters in the preceding fuselage section, the angular deviation generated under a long span is extremely small, thereby ensuring high precision of lateral guidance. Therefore, by setting each fuselage section 1 to be relatively long, the span between the two side guide wheels 10 at the beginning and end of the fuselage section 1 can be large (for example, more than 4 meters). In this way, the small offset of the fuselage section 1 in the direction perpendicular to the extension and retraction direction during retraction will result in a very small angular error under the long span, thereby achieving high precision in reset positioning.

[0042] The retraction mechanism operates as follows: Each fuselage section 1 is locked together by a locking mechanism. The drive wheel 3 on the first fuselage section 2 rotates to drive the entire multi-section fuselage 1 towards the guide rail 8. The ground rail guide wheel 9 on the last fuselage section in the extension direction enters the guide rail 8 first, until the last fuselage section is in position (restricted from further movement). At this point, multiple ground rail guide wheels 9 on fuselage sections 1 may have already entered the guide rail 8. Then, the locking mechanism between the last fuselage section and its preceding fuselage section... When the mechanism is unlocked, the "front fuselage section" retracts relative to the last fuselage section. During the retraction process, the "front fuselage section" is guided by the side guide wheel 10 on the last fuselage section. When the "front fuselage section" retracts to the position relative to the last fuselage section (it can be determined automatically by setting a position sensor or by manual judgment), the locking mechanism between the "front fuselage section" and its adjacent front fuselage section (i.e., the front-front fuselage section) is unlocked. The above process is repeated until all fuselage sections 1 are retracted to the position.

[0043] The ground guide and fuselage guide of the reset and correction mechanism work together from the bottom and side to ensure that all fuselage sections 1 are accurately restored to the preset initial state when they retract into place.

[0044] Example 2 See Figures 1 to 10 This embodiment provides a multi-section telescopic conveyor device, which is an improvement on Embodiment 1 to better adapt to climbing conditions. It should be noted that, unless otherwise specified, "front" and "rear" in this embodiment refer to the orientation in the extension direction.

[0045] The multi-section telescopic conveyor in this embodiment also includes a support unit 14, which is disposed on each section 1 of the machine body and is used to provide a fulcrum support for the preceding section of the machine body relative to the following section of the machine body when the preceding section of the machine body is in a locked state. The fulcrum support refers to the support point formed by the contact between the support unit 14 and the foundation support surface, which allows the section of the machine body 1 to perform pitching motion around it.

[0046] In this embodiment, the locking mechanism further includes a retractable engagement unit disposed on the preceding fuselage section along the extension direction and correspondingly engaged with the locking member 6. Specifically, the retractable engagement unit may be a retractable pin hole 27 corresponding to the pin, and the retractable pin hole 27 is disposed in front of the protruding pin hole 7 on the same fuselage section 1. When the preceding fuselage section extends to the position relative to the following fuselage section (i.e., the preset extension position), the pin on the following fuselage section can be inserted into the protruding pin hole 7 on the preceding fuselage section; when the preceding fuselage section retracts to the position relative to the following fuselage section (i.e., the preset retraction position), the pin on the following fuselage section can be inserted into the retractable pin hole 27 on the preceding fuselage section. The protruding pin hole 7 in the locking mechanism is an oblong hole to accommodate the rotation of adjacent fuselage sections 1 based on the supporting unit 14 during uphill or downhill movement.

[0047] The locking mechanism can be used to lock the first fuselage section to the second fuselage section after moving two adjacent fuselage sections 1 to a preset relative position (including a preset extended position and a preset retracted position).

[0048] Each section 1 of the multi-section telescopic conveyor can be selectively driven to extend one by one according to the needs of the climbing position and locked after extending, or selectively driven to retract one by one and locked after retracting. This allows each section 1 to independently perform climbing or retraction actions relative to the adjacent following section with the help of the support unit 14 when locked. The support unit 14 is configured to provide fulcrum support relative to the following section when the preceding section is locked, so as to limit the vertical offset of the rear end of the preceding section within a preset range when the front end of the preceding section performs the climbing or retraction actions.

[0049] In this embodiment, the power wheel 3 drives the fuselage section 1 to extend and is locked at a preset relative position by a locking mechanism. This achieves independent displacement of each fuselage section 1 segment by segment, ensuring that each segment is locked in a definite locked state after displacement, providing a structural foundation for subsequent independent climbing and descending. The support unit 14 provides a fulcrum support for the preceding fuselage section relative to the following fuselage section in the locked state. This allows the preceding fuselage section to independently perform extension climbing or retraction descending actions using the support unit 14 as a fulcrum. This transforms the significant interference problem caused by the entire machine climbing along its entire length in traditional solutions into each fuselage section 1 independently absorbing changes in climbing height within its own length range. This allows the entire equipment to complete large-span climbing without interference between sections. Simultaneously, independent climbing segment by segment significantly reduces the load per operation, resulting in smoother and more stable equipment operation.

[0050] See Figure 4 and Figure 9Specifically, in this embodiment, the supporting unit 14 includes support rollers 15 disposed at the bottom rear end of each body section 1, and support members 16 disposed on each body section 1. The support member 16 can specifically be a guide rail located on both sides of the conveyor belt 21 of each body section 1, and the aforementioned basic support surface is the guide rail contact surface on the top surface of the subsequent body section 1. The support rollers 15 are arranged on both sides of the bottom rear end of the body section 1 and roll on the corresponding guide rails of the adjacent subsequent body section. The support rollers 15 are configured to provide rolling support along the guide rails when the body sections 1 are relatively displaced; when the preceding body section is in a locked state, the support rollers 15 support the support member 16 of the subsequent body section, forming a fulcrum for the preceding body section to perform climbing or descending movements relative to the subsequent body section.

[0051] In this embodiment, the support member 16 is positioned at a predetermined distance from the rear end of the preceding fuselage section along its length. This predetermined distance is determined based on the maximum gradient the preceding fuselage section needs to traverse in actual operation, the length of the preceding fuselage section itself, and the vertical clearance between the rear end of the preceding fuselage section and the following fuselage section. Since the fulcrum is formed by the support roller 15, the closer the support roller 15 is to the rear end, the smaller the vertical offset of the rear end caused by the front end's lifting and lowering; conversely, the farther the support roller 15 is from the rear end, the larger the vertical offset of the rear end caused by the front end's lifting and lowering. By arranging the support roller 15 at an appropriate distance from the rear end of the preceding fuselage section, the vertical offset of the vertically aligned portion of the rear end of the preceding fuselage section and the following fuselage section is limited to a preset range when the front end of the preceding fuselage section experiences significant height changes during climbing or descending movements. This preset range is smaller than the vertical clearance between the vertically aligned portions of the preceding and following fuselage sections. Since the rear offset is always less than the clearance, the rear end of the preceding fuselage section will not touch the following fuselage section in the vertical direction, thus avoiding component interference between adjacent fuselage sections 1 during climbing or descending.

[0052] The principle behind the aforementioned climbing action is further explained below. In the locked state, the preceding fuselage section is locked to the following fuselage section by the locking mechanism, and the horizontal position of the rear end of the preceding fuselage section relative to the rear fuselage section is fixed. At this time, if the front end of the preceding fuselage section enters the slope area and experiences a height change (such as extending uphill or retracting downhill), a height difference arises between the front end and its rear end. The preceding fuselage section then undergoes pitching motion around the aforementioned pivot point: the height change of the front end is relatively large, but due to the distance constraint of the pivot point near the rear end, the height deviation of the rear end is controlled within a very small range. In other words, this embodiment, through the geometric relationship between the pivot point position and the rear end of fuselage section 1, transforms the large height change of the front end into a small height deviation of the rear end within the clearance range, ensuring that the rear end of the preceding fuselage section does not contact or interfere with the rear fuselage section. This principle applies to both extending uphill and retracting downhill conditions.

[0053] See Figure 9 and Figure 10 In this embodiment, the multi-section telescopic conveyor also includes a bottom guide section 17 that works in conjunction with the aforementioned body guide section to complete the reset and alignment after each work cycle. The body guide section is responsible for laterally assisting the preceding body section in repositioning relative to the following body section during the retraction process, while the bottom guide section 17 guides the support rollers 15 of the supporting unit 14 to ensure that the support rollers 15 travel in a straight line, guaranteeing the straightness of the body section 1's movement.

[0054] See Figure 10 In this embodiment, the top of the side guide wheel 10 is configured as a conical structure. In the non-climbing state, when the front fuselage section retracts relative to the rear fuselage section, the conical structure of the side guide wheel 10 adheres to the side of the front fuselage section, gradually guiding the front fuselage section to a position aligned with the rear fuselage section in both the height and extension / retraction directions. When the front fuselage section extends and climbs relative to the rear fuselage section, a height difference is created between the front and rear ends of the front fuselage section, and the main body of the front fuselage section leaves the guidance range of the side guide wheel 10, independently performing the climbing action. After the climbing action is completed or during the descent (i.e., when the rear end of the front fuselage section passes through the slope area and returns to a state approximately level with the rear fuselage section), the main body of the front fuselage section gradually descends relative to the rear fuselage section and enters the guidance range of the side guide wheel 10, where the conical structure of the side guide wheel 10 again adheres to the side of the front fuselage section for lateral guidance (guidance in both the height and extension / retraction directions).

[0055] See Figure 9 In this embodiment, the bottom guide portion 17 includes bottom guide fittings 18 disposed on the top surface of each fuselage section 1. The bottom guide fittings 18 are configured to guide the support rollers 15 of the supporting unit 14 so that the support rollers 15 travel in a straight line. Specifically, the bottom guide fittings 18 on the top surface of each fuselage section 1 are guide walls on both sides of the guide rail contact surface of the aforementioned guide rail. The guide walls on both sides cooperate with the support rollers 15 of the previous fuselage section. When the fuselage section 1 experiences a slight slippage or lateral disturbance during its telescopic movement and tends to deviate, the guide walls on both sides limit and constrain the support rollers 15, ensuring that the support rollers 15 always travel in a straight line in the telescopic direction, thereby guaranteeing the straightness of each fuselage section 1 and restoring each fuselage section 1 to the reference position after each work cycle.

[0056] When the equipment performs the retraction action, the preceding fuselage section is first guided by the conical structure of the side guide wheel 10 of the fuselage guide section to gradually return to its original position from the side (including guidance in the height direction and the extension direction). At the same time, the support rollers 15 of each fuselage section 1 travel in a straight line under the guidance of the bottom guide fitting 18 of the bottom guide section 17. The fuselage guide section and the bottom guide section 17 work together from the side and bottom directions to complete the multi-dimensional guidance of the preceding fuselage section, so that each fuselage section 1 returns to the precise reference position at the end of each operation cycle.

[0057] This embodiment also provides a method for long-span segmented climbing, used in the multi-section telescopic conveyor equipment of this embodiment. The method includes the following steps: First, the fuselage section 1 is driven to move relative to its adjacent rear fuselage section to a preset relative position via the drive wheel 3 located on the first fuselage section 2, and then locked in place by a locking mechanism. Then, the locked fuselage section drives the adjacent rear fuselage section to move to the preset relative position, and the locking mechanism locks the rear fuselage section in place. This allows each fuselage section 1 to be selectively driven to extend one by one according to the climbing position and locked after extension, or to be selectively driven to retract one by one and locked after retraction.

[0058] In the locked state, using the supporting unit 14 as a fulcrum, the locked front fuselage section independently performs climbing or descending movements relative to the rear fuselage section. When the front fuselage section performs climbing or descending movements, resulting in elevation, the vertical offset of the rear end of the front fuselage section is limited to a preset range. This converts the height change of the front end of the front fuselage section into a height offset of its rear end within a preset range, thus preventing interference between the rear end of the front fuselage section and the rear fuselage section. In some scenarios, in the unlocked state (e.g., when the front fuselage section moves only half its length relative to the rear fuselage section), the supporting unit can also be used as a fulcrum to allow the front fuselage section to perform climbing or descending movements relative to the rear fuselage section.

[0059] Furthermore, the method also includes a guide reset step: when multiple fuselage sections 1 perform a retraction action, the fuselage guide part set on the rear fuselage section guides the retracting front fuselage section in the height and telescopic direction to assist the front fuselage section in returning to its correct position. At the same time, the guide rail laid on the ground along the telescopic direction cooperates with the guide mating parts at the bottom of each fuselage section to force the guide reset of each fuselage section 1, so as to reduce the cumulative positional deviation generated during the previous telescopic and travel process.

[0060] It should be noted that the above embodiments describe a typical scenario where the machine body sections 1 extend sequentially, starting with the first section 2. In practical applications, the order of extension and retraction of each section 1 is not fixed, but can be flexibly adjusted according to the climbing position and the distribution of the conveyed material. For example, in unloading conditions, when the vehicle is fully loaded, the equipment is in its shortest state. A section at the bottom (e.g., the second to last section) can be extended and locked first to allow space for unloading. As unloading progresses and the material height decreases, the section at the front can be extended and locked, and then each section can be gradually lengthened to meet operational needs. In loading conditions, the equipment is initially in its longest state. To preserve loading space, a section can be retracted and locked first, and then each section can be gradually shortened. Regardless of the extension / retraction sequence, as long as the fuselage section currently traversing the slope is locked and independently climbs using its own support unit as a fulcrum during the climbing action, ensuring that only one fuselage section is climbing at a time, the core technical effect of large-span segmented climbing can be achieved. Therefore, the extension / retraction sequence of the fuselage sections does not constitute a limitation on this invention.

[0061] Example 3 In this embodiment, the term "climbing conveyor mechanism" refers to a mechanism used between adjacent machine sections 1 to transition the conveyed material from a lower position to a higher position (or vice versa). "Feeding machine section" refers to the machine section in a multi-section telescopic conveyor used to receive the input of the conveyed material. "Transporting machine section" refers to the machine section in a multi-section telescopic conveyor used to receive the conveyed material from the previous machine section and continue conveying it to the subsequent machine section. "Previous machine section" and "rear machine section" refer to the one further forward and the one further back in the material conveying direction among two adjacent machine sections. "Lifting structure" refers to a structure disposed on the outer ring surface of the front roller 22, used to contact the conveyed material and lift it upwards through friction. "Gap maintaining unit" refers to a mechanism used to maintain a preset gap between the front roller 22 and the conveyor belt 21 of the previous machine section.

[0062] See Figures 11 to 15 This embodiment further describes the specific implementation of the climbing conveyor mechanism on each section of the multi-section telescopic conveyor in Embodiment 1 or Embodiment 2 above. This climbing conveyor mechanism is used between adjacent sections 1 and can decompose the total height of a single climb into two progressively completed climbing actions. It should be noted that the "previous section" referred to in this embodiment refers to its position in the material conveying direction, which differs from the embodiments above.

[0063] See Figure 11 and Figure 12In this embodiment, the inclined conveying mechanism is arranged between adjacent machine body sections 1. The multi-section machine body 1 includes a loading machine body section 19 and at least one transport machine body section 20. Both the loading machine body section 19 and the transport machine body section 20 are equipped with conveyor belts 21 driven by conveyor rollers, which are rotated by corresponding power sources. The inclined conveying mechanism includes a front roller 22 and a gap maintaining unit 23. The front roller 22 is positioned at the front of the transport machine body section 20 in the conveying direction via the gap maintaining unit 23. The diameter of the front roller 22 is smaller than the diameter of the conveyor roller of the corresponding transport machine body section 20. The gap maintaining unit 23 is configured to maintain a preset distance between the front roller 22 and the conveyor belt 21 of the preceding machine body section.

[0064] The front roller 22 is configured to receive driving force from the power source of the conveyor section 20 and rotate actively to lift part of the conveyed material from the conveyor belt 21 of the preceding section through friction, forming the first stage of climbing action. Simultaneously, the front roller 22 is configured to cooperate with the conveyor belts 21 of the preceding section and the conveyor belt 21 of the conveyor section 20 to continue transporting the conveyed material to the conveyor belt 21 of the conveyor section 20, forming the second stage of climbing action. By decomposing the total height of a single climb between adjacent sections 1 into the first stage of climbing achieved by the front roller 22 and the second stage of climbing achieved by the conveyor belt 21 of the conveyor section 20, the climbing height of each stage is significantly reduced relative to the total height, resulting in less conveying resistance to the material during climbing and a smoother climb.

[0065] Specifically, the front roller 22 receives driving force from the power source of the conveyor body section 20 and rotates actively. It can obtain rotational power from the power source of the conveyor body section 20 or the conveyor roller through an additional transmission device (such as a chain, synchronous belt, gear set, etc.), so that the front roller 22 and the conveyor belt 21 of the conveyor body section 20 operate synchronously. Since the front roller 22 rotates actively rather than being passively driven, it can provide a continuous upward driving force for the conveyed material, rather than relying solely on the pushing of the conveyor belt 21.

[0066] See Figure 13 In this embodiment, a lifting structure is provided on the outer ring surface of the front roller 22. The lifting structure is configured to contact the conveyed material to lift a portion of the conveyed material upward through friction. Compared to a conventional smooth roller surface, the lifting structure can significantly increase the contact friction between the material and the conveyed material, providing a stable and reliable upward driving force for the material under incline conditions. Specifically, the front roller 22 may include a cylinder and a rubber layer formed on the outer ring surface of the cylinder, on which the aforementioned lifting structure is formed. The cylinder may be made of a metal material (e.g., steel or aluminum alloy) to ensure the overall rigidity and load-bearing capacity of the front roller 22; the rubber layer covers the outer ring surface of the cylinder and can be bonded to the cylinder through a vulcanization process.

[0067] Furthermore, the lifting structure includes a plurality of teeth 24 spaced circumferentially along the outer surface of the front roller 22 (the teeth 24 may be made of rubber material, i.e., integrally formed on the outer surface of a rubber layer, with a plurality of raised teeth 24 spaced circumferentially on the outer surface of the rubber layer). Each tooth 24 is configured to sequentially enter the contact area between the surface of the conveyed material and the front roller 22 as the front roller 22 rotates, so as to lift the conveyed material upward by friction and drive it along the conveying direction. In a specific implementation, as the front roller 22 rotates, adjacent teeth 24 sequentially contact the lower surface of the conveyed material, forming an effect similar to pushing the material upward.

[0068] See Figure 13 Specifically, the tooth portion 24 includes a front tooth surface 25 located on the front side of the front roller 22 in the rotation direction and a rear tooth surface 26 located on the rear side. The rear tooth surface 26 is configured to be inclined along the tooth root to the tooth tip towards the rotation direction of the front roller 22. Figure 13 In the orientation shown, the front roller 22 rotates counterclockwise, and the rear tooth surface 26 is inclined outward counterclockwise from the root of the tooth. This inclination direction ensures that when the rear tooth surface 26 contacts the conveyed material, the normal component of the contact force points in the direction of material movement, which can more effectively convert friction into a lifting driving force for the material. Furthermore, the plane of the front tooth surface 25 coincides with the rotation axis of the front roller 22. When the tooth 24 disengages from the conveyed material, the front tooth surface 25 will not obstruct or drag the material, allowing the tooth 24 to smoothly disengage.

[0069] See Figure 11 and Figure 12 In this embodiment, the gap maintaining unit 23 may specifically include two spaced-apart support members 16 (i.e., the support members 16 in embodiment 2 above). The first ends of the two support members 16 are rotatably connected to the corresponding conveyor body section 20, and the second ends of the two support members 16 are respectively supported on both sides of the conveyor belt 21 of the preceding body section in the width direction (specifically, they may be supported on two guide rails arranged along the conveying direction on both sides of the conveyor belt 21). The front roller 22 is rotatably connected between the two support members 16. By rotatably connecting the support members 16 to the corresponding conveyor body section 20, the gap maintaining unit 23 as a whole can swing around the first end of the support member 16, and adaptively follow and adjust when the corresponding conveyor body section 20 undergoes pitch changes relative to the preceding body section.

[0070] Furthermore, the gap maintaining unit 23 also includes a support roller 15 (i.e., the support roller 15 in Embodiment 2 above) mounted on the second end of the support member 16. The support roller 15 is configured to roll and support the preceding machine section. The front roller 22 is configured to maintain a constant preset gap with the conveyor belt 21 of the preceding machine section by relying on the rolling support of the support roller 15 and the swing of the support member 16 relative to the corresponding conveyor section 20. Specifically, the support roller 15 is always pressed against the platform of the preceding machine section. When the corresponding conveyor section 20 undergoes extension, retraction, or pitch displacement relative to the preceding machine section, the support member 16 swings around its first end, and the second end of the support member 16 can then always remain supported on the preceding machine section, thereby allowing the front roller 22 on the support member 16 to always maintain its relative position with the conveyor belt 21 of the preceding machine section (i.e., maintain a constant preset gap between the front roller 22 and the conveyor belt 21 of the preceding machine section). This floating adaptive design ensures that the height of the first-stage climb remains stable regardless of the pitch of the fuselage, guaranteeing the stability of the incline transport.

[0071] It is important to emphasize that the fundamental purpose of the gap-maintaining unit 23 in this embodiment is not merely to maintain the distance between the front roller 22 and the conveyor belt 21 of the preceding body section, but rather to enable the climbing conveyor mechanism to adapt to multi-section telescopic conveyors with climbing scenarios. Under normal planar conveying conditions of multi-section telescopic conveyors, only basic alignment of the conveying surfaces is required between adjacent body sections 1. Even if the distance between the conveying surfaces fluctuates within a certain range, it usually does not have a substantial impact on material conveying. However, in climbing scenarios, a significant change in pitch angle will occur between the front and rear ends of the corresponding transport body section 20 (the greater the climbing height of one end of the transport body section 20, the more severe its overall tilt). At this point, if the distance between the front roller 22 and the conveyor belt 21 of the preceding machine section is not actively constrained, this distance will dynamically change with the pitch of the conveyor section 20: when the conveyor section 20 tilts upward, the height of the front roller 22 relative to the conveyor belt 21 of the preceding machine section increases, which will cause the height of the first stage of climbing to increase accordingly; when the conveyor section 20 tilts downward, this distance may decrease to the point where the front roller 22 and the conveyor belt 21 of the preceding machine section come into contact and interfere. This dynamic change in distance will directly disrupt the height distribution relationship between the two stages of climbing, causing the height of the first stage of climbing to fluctuate, and the stress state of the conveyed material during the climbing process to be unstable. In severe cases, it may even cause the material to be unable to be effectively lifted or to be stuck between the front roller 22 and the conveyor belt 21 of the preceding machine section.

[0072] In traditional large roller conveyor systems, due to the large space occupied by the large-diameter rollers and the limited bending radius of the conveyor belt 21, designers typically focus on how to achieve smooth connection between the conveyor surfaces of adjacent machine sections 1 under high-drop conditions by adding a leveling mechanism. However, they neglect the impact of gap fluctuations at the connection point on material climbing stability in incline scenarios. This is because, in traditional systems, there is an inherent, unavoidable large gap between the end of the previous conveyor belt 21 and the beginning of the next conveyor belt 21 due to the large diameter of the rollers. The impact of this gap fluctuation on the material is masked by the large gap itself. This application's design takes a completely different technical approach: since the diameter of the front roller 22 is actively reduced to decrease the inter-section gap, the stability control of the reduced gap becomes crucial. The change in gap accounts for a large proportion relative to the absolute value of the reduced gap, directly affecting the stability of the first-stage climbing height and thus disrupting the height distribution between the two stages of climbing. Based on this understanding, this application incorporates a gap-maintaining unit 23. The swinging of the support member 16 around its first end and the rolling support of the support roller 15 on the platform of the preceding machine section ensure that the gap between the front roller 22 and the conveyor belt 21 of the preceding machine section remains stable regardless of the pitch changes of the corresponding transport machine section 20 during the climbing process. Thus, the height of the first-stage climb is limited, the height distribution between the two stages of climb is stably maintained, and the overall operational reliability of the climbing conveyor mechanism is guaranteed.

[0073] In this embodiment, the ratio A / B between the first-stage climbing height A and the second-stage climbing height B is between 0.3 and 0.7. The first-stage climbing height A is determined by the preset distance between the front roller 22 and the conveyor belt 21 of the preceding machine body section, and the second-stage climbing height B is determined by the height difference between the front roller 22 and the conveyor belt 21 of the corresponding transport machine body section 20. When the ratio A / B is controlled within the range of 0.3 to 0.7, the load distribution of the two stages of climbing is relatively balanced: the height of the first-stage climbing is not too large, which would make it difficult to lift the material, and the height of the second-stage climbing is not too large, which would make the friction of the conveyor belt 21 insufficient to drive the material, thereby achieving the optimal overall conveying efficiency of the two stages of climbing.

[0074] Furthermore, the diameter of the front roller 22 is selected such that the preset distance is smaller than the smallest size of the conveyed material. Specifically, for multi-size mixed-line conveying applications, the conveyed materials may have various different sizes (e.g., large-size car tires and small-size motorcycle tires). By selecting the diameter of the front roller 22 such that the preset distance between it and the preceding conveyor belt 21 is smaller than the height of the smallest size of the conveyed material, it can be ensured that even the smallest size material can be effectively contacted and lifted by the lifting structure of the front roller 22. This allows the conveyed material to smoothly transition from the preceding conveyor belt 21 to the corresponding conveyor belt 21 of the transport section 20 via the front roller 22, achieving fully compatible incline conveying.

[0075] The two-stage climbing process of this embodiment will be described below.

[0076] In the first-stage climbing phase, the front roller 22 rotates actively under the drive of the power source of the corresponding conveyor section 20. A lifting structure (e.g., teeth 24) on the outer surface of the front roller 22 contacts the lower surface of the conveyed material, lifting a portion of the material from the conveyor belt 21 of the preceding section through friction. The front end of the lifted material first contacts the outer surface of the front roller 22. Then, as the front roller 22 continues to rotate, the material is gradually lifted upwards and moved forward by the conveyor belt 21 of the preceding section until its main body transitions from the conveyor belt 21 of the preceding section to the front roller 22, completing the first-stage climbing action.

[0077] In the second-stage climbing phase, the front roller 22 continues to rotate, cooperating with the conveyor belt 21 of the preceding machine section (pushing forward) and the conveyor belt 21 at the corresponding conveyor roller section 20, which, driven by friction, propels the material from the front roller 22 onto the conveyor belt 21 of the corresponding conveyor section 20, completing the second-stage climbing action. Thus, the material has completed the entire transition from the preceding machine section to the conveyor section 20 through two stages of climbing.

[0078] It should also be noted that the active rotation of the front roller 22 and the provision of a lifting structure in this embodiment are closely related to the differences in characteristics between the conveyor belt 21 of the feeding section and the main conveying section of the multi-section telescopic conveyor. In the scenario where the preceding section is the feeding section 19, the feeding section 19 receives the material being conveyed. That is, the material is typically thrown or dumped onto the conveyor belt 21 of the feeding section 19 from a certain height. The material's velocity upon contact with the conveyor belt 21 is zero or far lower than the operating speed of the conveyor belt 21. Therefore, relative slippage inevitably occurs during the acceleration process to synchronize with the conveyor belt 21. To cope with this continuous sliding wear, the conveyor belt 21 of the feeding section 19 is typically made of a wear-resistant belt with superior wear resistance to ensure the service life of the conveyor belt 21 under long-term conditions of material sliding friction. However, the surface friction coefficient of wear-resistant belts is usually low (an inherent characteristic of wear-resistant materials), resulting in relatively limited frictional force that the conveyor belt 21 of the feeding section 19 can provide when conveying materials. In contrast, the conveyor belt 21 of the main conveying section (i.e., the conveyor body section 20) can be a friction belt with a higher surface friction coefficient. This is because the material has been accelerated to be synchronized with the conveyor belt 21 in the main conveying section, and there is almost no relative sliding. The wear of the conveyor belt 21 is greatly reduced, and the requirements for wear resistance are correspondingly reduced. Therefore, a material with a higher friction coefficient can be used to ensure the stability of the material during the conveying process.

[0079] This difference in the characteristics of the conveyor belt 21 reveals a prominent technical contradiction under climbing conditions. When the conveyed material reaches the end of the conveyor belt 21 of the feeding machine section 19 and is ready to perform the first stage of climbing, the front end of the material is lifted by the front roller 22, and one side of the material (the part closer to the lifted side in the width direction) gradually detaches from the surface of the conveyor belt 21 of the feeding machine section 19. The actual contact area between the material and the conveyor belt 21 of the feeding machine section 19 is greatly reduced. Since the surface friction coefficient of the conveyor belt 21 of the feeding machine section 19 is already low, coupled with the further reduction of the contact area, the conveyor belt 21 of the feeding machine section 19 can hardly provide effective forward and upward driving force for the material at this time. That is, relying solely on the friction of the conveyor belt 21 of the feeding machine section 19, the material not only cannot complete the climb, but may also slip or even roll backward on the slope. In this embodiment, since the front roller 22 is configured to rotate actively and actively contact and drive the conveyed material through the lifting structure (e.g., rubber teeth 24) on its outer ring surface, the upward driving force provided by the front roller 22 replaces the friction lost by the conveyor belt 21 of the feeding machine body section 19 after the material is lifted. In other words, the active drive of the front roller 22 compensates for the frictional deficiency of the conveyor belt 21 of the feeding machine body section 19 under climbing conditions, so that the conveyed material is always subjected to a stable upward driving force during the lifting process, ensuring that the material can reliably complete the transition from the first level of climbing to the second level of climbing, thereby solving the technical problem in the traditional solution where the material slips in the climbing section due to the low friction characteristics of the feeding section belt, making it difficult to convey to the next level of the conveyor body section 20.

[0080] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A multi-section telescopic conveyor, characterized in that, include: The fuselage consists of multiple sections, which are sequentially fitted together along the telescopic direction and can be displaced relative to each other along the telescopic direction. Furthermore, in the extension direction of adjacent fuselage sections, the preceding fuselage section has a preset extension position relative to the following fuselage section. The first fuselage section of the multi-section fuselage has a walking unit comprising three ground-touching walking components. These three components are configured to form a support plane when the first fuselage section touches the ground, ensuring that all three components remain in contact with the ground. Each of the three ground-touching walking components includes two drive wheels and one support wheel. The rotation axes of the two drive wheels coincide and are perpendicular to the extension direction. The two drive wheels rotate synchronously. The support wheel is located behind the drive wheels in the extension direction, and the distance between the projection of the support wheel and the projection of the two drive wheels in the support plane is equal. At least one locking mechanism is provided between adjacent fuselage sections. The locking mechanism is configured such that after any fuselage section extends to the preset extension position and is tensioned to a straight state, it locks the fuselage section adjacent to the next fuselage section in the extension direction. The locked fuselage section acts as a rigid tension transmission component to drive the adjacent next fuselage section to continue extending. In this way, each fuselage section is tensioned and locked section by section, and the power wheel on the first fuselage section drives each locked fuselage section to synchronously perform an extension or retraction action. The reset and correction mechanism is configured to sequentially guide the unlocked fuselage sections when the multi-section fuselage is retracted, so that the multi-section fuselage reaches a preset initial state when it retracts into place.

2. The multi-section telescopic conveyor according to claim 1, characterized in that, The reset and correction mechanism includes a ground guide section, which includes a guide rail laid on the ground along the telescopic direction and a guide fitting component disposed at the bottom of each fuselage section. The guide fitting component is configured to enter the guide rail sequentially when the multiple fuselage sections perform a retraction action, and to forcefully guide and reset each fuselage section through the guide rail so that the multiple fuselage sections reach a preset initial state when they retract into place.

3. The multi-section telescopic conveyor according to claim 2, characterized in that, The guide fitting is a guide wheel unit disposed at the bottom of each fuselage section, and the guide wheel unit includes at least one ground rail guide wheel adapted to the guide rail.

4. The multi-section telescopic conveyor according to any one of claims 1 to 3, characterized in that, The reset and correction mechanism includes a fuselage guide portion disposed on the top of each of the multiple fuselage sections except the first fuselage section. The fuselage guide portion includes a plurality of side guide wheels. The side guide wheels are configured to guide the preceding fuselage section from the side of the preceding fuselage section after any fuselage section unlocks from the preceding fuselage section adjacent to it in the extension direction during the retraction action of the multiple fuselage sections, so that the multiple fuselage sections reach a preset initial state when they retract into place.

5. The multi-section telescopic conveyor according to claim 4, characterized in that, In the preset initial state of the multiple fuselage sections, the fuselage guide portion on any fuselage section includes side guide wheels located on both sides of the preceding fuselage section in the extension direction, and the side guide wheels located on the same side of the preceding fuselage section are arranged along the extension direction.

6. The multi-section telescopic conveyor according to claim 5, characterized in that, The side guide wheels on both sides of the same fuselage section are symmetrically arranged; the span between the two side guide wheels at the beginning and end along the telescopic direction on the same fuselage section is configured such that when the previous fuselage section retracts into place in the telescopic direction, the angular deviation of the previous fuselage section between the two side guide wheels at the beginning and end is limited to a preset tolerance range.

7. The multi-section telescopic conveyor according to claim 1, characterized in that, The first section of the fuselage is also equipped with a travel driver. The output end of the travel driver is connected to a transmission shaft and drives the transmission shaft to rotate. The transmission shaft is perpendicular to the telescopic direction. The transmission shaft is connected to two power wheels respectively. The two power wheels are configured to be driven synchronously by the transmission shaft.

8. The multi-section telescopic conveyor according to claim 1, characterized in that, It also includes a counterweight unit, which is located in the first fuselage section and is used to increase the positive pressure between the two drive wheels and the ground.

9. The multi-section telescopic conveyor according to claim 1, characterized in that, The locking mechanism includes a drive unit disposed on a rear fuselage section along the extension direction, a locking member driven by the drive unit, and a mating unit disposed on a front fuselage section along the extension direction and correspondingly mating with the locking member. The drive unit is used to drive the locking member to extend into the mating unit to lock the front fuselage section along the extension direction to the rear fuselage section, or to drive the locking member to exit the mating unit to release the locking between two adjacent fuselage sections.

10. The multi-section telescopic conveyor according to claim 1, characterized in that, The first fuselage section is also provided with a number of auxiliary traveling components for auxiliary support when the first fuselage section is tilted, and there is a gap between the auxiliary traveling components and the support plane.

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