Belt conveyor with carrier roller replacement structure

Abstract

The invention relates to the technical field of belt conveying equipment, and discloses a belt conveyor with a carrier roller replacement structure, which comprises an upper jacking piece and a lower supporting piece which can extend and retract along the width direction of a conveying belt until the upper jacking piece and the lower supporting piece are aligned with or exceed the edges of the two sides of the width of the conveying belt, and a lifting structure is arranged between the upper jacking piece and the lower supporting piece; the upper jacking piece comprises an end plate I and an end plate II, and the distance between the end plate I and the end plate II is adjusted through a movable connecting structure I; the lower supporting piece comprises a third end plate and a fourth end plate, and the distance between the third end plate and the fourth end plate is adjusted through a second movable connecting structure. According to the belt conveyor, the distance between the first end plate and the second end plate can be adjusted through the first movable connecting structure, so that the belt conveyor adapts to the width of a belt, and the edge of the belt is prevented from falling off due to gravity; the pressure intensity of local stress is reduced through a hydraulic angle adjusting structure, so that the stability of the device is higher; and automatic paying-off can be achieved through the first movable connecting structure, the structure is stable, and the gravity of the belt can be shared.

Description

Technical Field

[0001] The invention relates to the technical field of belt conveyor equipment, and in particular to a belt conveyor with a roller replacement structure. Background Art

[0002] Belt conveyor is a continuous conveying machine that uses flexible conveying as a material carrying and traction component. The conveyor belt rotates around the driving roller and the redirecting roller, and the upper and lower branches between the two rollers are supported by several rollers. When in use, the material is placed on the conveyor belt, and the friction between the driving roller and the conveyor belt is used to pull the conveyor belt and the material to run.

[0003] During the use of the belt conveyor, the rollers are consumable parts and need to be replaced regularly. When damage occurs, they need to be replaced in time to maintain the operation of the belt conveyor.

[0004] For example, the Chinese invention patent with the authorization announcement number CN113305552B discloses a roller replacement device for a coal mine belt conveyor, including a bottom plate, a lifting mechanism is installed on the top of the bottom plate, and fixing mechanisms are installed on both sides of the bottom plate. The bottom plate is connected to the lifting mechanism and the fixing mechanism as a whole. The present invention lifts the belt through the lifting mechanism and fixes the entire device on the conveyor through the fixing mechanism. It does not require multiple tools to cooperate. Only one person is needed to complete the roller replacement operation, which saves time and effort and improves work efficiency. The lifting mechanism and the fixing mechanism are both installed on the support plate, which is not easy to lose and is convenient for next use.

[0005] However, the above solution has the following problems: First, reference Figure 1 , which mainly uses the top plate to push up the conveying belt, but in reality, the width of the belt used to transport coal mines and gypsum boards is quite different from the width of the belt used to transport sports food processing, and the top plate in the above invention patent cannot be adjusted, so it is difficult to adapt to different belt widths, which results in low applicability of the device; Second, the above invention patent mainly uses gears to adjust the angles of the first connecting rod and the second connecting rod to support the top plate, thereby lifting the top plate. The adjustment angle between the two is limited, and it mainly depends on the sliding of the driving gear rack. The sliding stroke of the gear is related to the top plate, resulting in insufficient lifting height. Summary of the invention

[0006] The object of the present invention is to provide a belt conveyor with a roller replacement structure to solve the technical problems in the prior art.

[0007] The present invention provides a belt conveyor with a roller replacement structure, comprising an upper supporting member and a lower supporting member, both of which can be extended and retracted along the width direction of the conveyor belt until they are aligned with or exceed the edges of both sides of the width of the conveyor belt, and a lifting structure is provided between the two. The upper member includes an end plate 1 and an end plate 2, and a movable connection structure 1 is used between the end plate 1 and the end plate 2 to adjust the distance between the end plate 1 and the end plate 2; The lower supporting member comprises an end plate three and an end plate four, and a movable connection structure two is provided between the end plate three and the end plate four to adjust the distance between the end plate three and the end plate four.

[0008] Further, the movable connection structure 1 includes a plurality of load-bearing cables arranged between the end plate 1 and the end plate 2, one end of each load-bearing cable is installed on the end plate 2 through a fixing seat, the end plate 1 is provided with a sliding sleeve seat on a side close to the end plate 2 to embed the middle part of the load-bearing cable, and the other side of the end plate 1 is provided with a rope retracting mechanism, and the rope retracting mechanism is used to connect the other end of the load-bearing cable; The cam is an axially traversable device for camming a rope, and the cam is actuated by a plurality of springs, each of which is adapted to move relative to the rope, and the springs are adapted to move relative to the rope.

[0009] Furthermore, the movable connection structure 2 includes four slide grooves arranged on both sides of the end plate 3 and the end plate 4 along the conveying direction, and the same straight slide plate is nested between the slide grooves on the same side.

[0010] Further, the lifting structure includes a plurality of adjustable connecting rod groups connected between the end plate 1 and the end plate 3, and between the end plate 2 and the end plate 4; Each adjustable connecting rod group includes support plates connected end to end through a hydraulic angle adjustment structure, the bottom end of the bottommost support plate is also connected to end plate three or end plate four through the hydraulic angle adjustment structure, and the top end of the topmost support plate is hinged to end plate one or end plate two.

[0011] Furthermore, the hydraulic angle adjustment structure includes a nesting groove arranged on the relatively stationary side during rotation, an annular flow channel is arranged around the nesting groove, the annular flow channel extends to the outside through a pipeline, a valve is arranged in the pipeline, a sleeve is fixedly nested in the nesting groove, the sleeve is provided with a sealing plate 1 extending along its radial direction, a connecting column is nested in the axis of the sleeve, the connecting column is fixedly connected to the relatively moving side during rotation, the connecting column is provided with a sealing plate 2 extending along its radial direction, the sealing plate 2 forms a sealed hydraulic cavity with one of the adjacent sealing plates 1, the sealing plate 2 is connected to another adjacent sealing plate 1 by an elastic member, and the annular flow channel is in communication with the sealed hydraulic cavity through a branch flow channel.

[0012] Furthermore, the corresponding end surface of the second sealing plate is in arc-shaped contact with the inner wall of the sleeve; The corresponding end surface of the sealing plate 1 is in arc-shaped contact with the outer peripheral surface of the connecting column.

[0013] Furthermore, the outer ends of the end plate 1 and the end plate 2 are also connected to a deformation plate via a hydraulic angle adjustment structure.

[0014] Furthermore, a limiting rod is provided at the bottom end of the second end plate, and a limiting groove for nesting the limiting rod is provided on the fourth end plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention can make the distance between the end plate 1 and the end plate 2 adjustable through the movable connection structure 1, so as to adapt to the width of the belt and prevent the edge of the belt from falling due to gravity; (2) Compared with the background art in which the partial teeth of the gear bear the entire weight of the belt, the present invention reduces the pressure of the local force through the hydraulic angle adjustment structure, making the device more stable; (3) The present invention can automatically release the wire through the movable connection structure, and the structure is stable and can share the belt gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a belt conveyor with a roller replacement structure of the present invention; Figure 2 for Figure 1 A schematic diagram of another side of the overall structure in the embodiment; Figure 3 A schematic diagram of an angle of a ratchet wheel and ratchet teeth; Figure 4 A schematic diagram of another angle of the ratchet wheel and ratchet teeth; Figure 5 This is a schematic diagram of the adjustable link assembly when it is fully retracted; Figure 6 It is a longitudinal section of the hydraulic angle adjustment structure; Figure 7 It is a schematic diagram of the internal structure of the hollow installation part.

[0018] Reference numerals: 1. End plate one; 2. End plate two; 3. End plate three; 4. End plate four; 5. Load-bearing cable; 6. Fixed seat; 7. Sliding sleeve seat; 8. Hollow mounting portion; 9. Rotating rod; 10. Cable winding drum; 11. Ratchet; 12. Ratchet; 13. Compound convex groove; 14. Mounting plate portion; 15. Return spring; 16. Slide groove; 17. Linear slide plate; 18. Annular flow channel; 19. Pipeline; 20. Sleeve; 21. Closing plate one; 22. Connecting column; 23. Closing plate two; 24. Elastic member; 25. Branch flow channel; 26. Deformation plate; 27. Limit rod; 28. Limit groove; 29. ​​Support plate; 30. Sealed hydraulic chamber. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 7 As shown, the present invention provides a belt conveyor with a roller replacement structure, including an upper support member and a lower support member, both of which can be extended and retracted along the width direction of the conveyor belt until they are aligned with or exceed the edges of the two sides of the width of the conveyor belt, and a lifting structure is provided between the two; the upper support member includes an end plate 1 and an end plate 2, and a movable connection structure 1 is used between the end plate 1 and the end plate 2 to adjust the distance between the two; the lower support member includes an end plate 3 and an end plate 4, and a movable connection structure 2 is used between the end plate 3 and the end plate 4 to adjust the distance between the two.

[0025] In the present invention, the movable connection structure 1 may be completely identical to the movable connection structure 2, or may be completely different.

[0026] In some embodiments of the present invention, the movable connection structure 1 includes a plurality of load-bearing cables 5 arranged between the end plate 1 and the end plate 2, one end of each load-bearing cable 5 is installed on the end plate 2 through a fixing seat 6 (i.e. a commonly used fixing part), the end plate 1 is nested in the middle part of the load-bearing cable 5 by setting a sliding sleeve seat 7 (i.e. a sleeve-like connecting part, on the inner wall of which balls can be set to reduce sliding friction) on the side close to the end plate 2, and a rope retracting mechanism is set on the other side of the end plate 1, and the rope retracting mechanism is used to connect the other end of the load-bearing cable 5; the rope retracting mechanism includes a hollow mounting portion 8 fixedly connected to the bottom surface of the end plate 1, and the hollow mounting portion 8 is rotatably installed with a rotating rod 9 equal to the number of the load-bearing cables 5 through a rotating hole, and a rope winding drum 10 is fixedly sleeved on the rotating rod 9. 5 is fixed on the cable winding drum 10, and slideways for the load-bearing cable 5 to slide through are provided in the hollow mounting portion 8 and the end plate 1, and a plurality of ratchets 11 are fixed on the outer surface of the hollow mounting portion 8 to be fixedly sleeved on either end of the rotating rod 9 in a one-to-one correspondence, and a ratchet 12 is rotatably installed on the end surface of the ratchet 11 opposite to the rotating rod 9, and the ratchet 12 is adapted to the ratchet 11, and the outer side of the ratchet 12 presents a square side, and the inner side of the ratchet 12 presents a circular side, and the end surface of the rotating rod 9 is also provided with a composite convex groove 13, and the shape of the composite convex groove 13 can be respectively matched with the inner and outer sides of the ratchet 12, and the composite convex groove 13 extends from one end close to the circular side to form a mounting plate portion 14, and a reset spring 15 is connected between the mounting plate portion 14 and the ratchet 12.

[0027] Through the restrictions on the movable connection structure 1 by the above-mentioned embodiment, firstly, through the side shape restriction of the ratchet 12, the special shape of the composite convex groove 13 allows the ratchet 12 to rotate to one side, so that the ratchet 12 can rotate relative to the ratchet wheel 11, and the composite convex groove 13 provides a space for installing a reset spring 15, thereby helping the ratchet 12 to automatically reset when it stops rotating and keep locked in rotation; then the entire device is inserted from one side between the mounting seats of the conveyor belt and the roller, and then on the other side, when the end plate 2 2 is pulled outward (relative to the center of the entire device) by manpower or rope traction or mechanical claws and the like, the rope winding drum 10 can release the load-bearing rope 5 through the one-way locking function of the ratchet 12 and the ratchet wheel 11, thereby automatically extending the length of the load-bearing rope 5 between the end plate 1 1 and the end plate 2 2, and the pulled out load-bearing rope 5 can support the conveying belt.

[0028] The other end of the rotating rod 9 can be installed on the hollow mounting portion 8 through a coil spring, so that when the traction of the end plate 2 is stopped and the ratchet 12 is manually turned, the lock of the load-bearing cable 5 is released, and the rotating rod 9 can automatically rewind the load-bearing cable 5 or manually rewind it.

[0029] In the above setting process, first, the number of load-bearing cables 5 is increased to share the force of a single load-bearing cable 5, and second, the load-bearing cable 5 is wound around the cable drum 10 to disperse the force on the ratchet 12 and the ratchet wheel 11 that actually participate in the locking function, because the tooth structure is easily worn when it is overloaded; and the transmission belt mainly applies a downward force to the load-bearing cable 5, and the downward pressure is transferred to the lifting structure by the cable drum 10 and the rotating rod 9, while the lateral force on the ratchet 12 and the ratchet wheel 11 is relatively small, which is mainly caused by the vertical component force caused by the deformation of the cable drum 10 when it fits the transmission belt. Therefore, the ratchet 12 and the ratchet wheel 11 have a longer life than the gears in the background technology that directly bear the gravity component of the transmission belt.

[0030] In some embodiments of the present invention, the movable connection structure 2 includes four slide grooves 16 arranged on both sides of the end plate 3 and the end plate 4 along the conveying direction, and the same straight slide plate 17 is nested between the slide grooves 16 on the same side.

[0031] Through the limitations of the above-mentioned embodiment of the movable connection structure 2, the movable connection structure 2 can slide linearly more stably. Its advantage is that its sliding trajectory is stable. Its disadvantage is that it is difficult to have a large telescopic range. Its telescopic range depends to a large extent on the length of the linear slide 17.

[0032] It can be seen from the above introduction that the embodiment of the movable connection structure 1 provided by the present invention has a large telescopic length, but a defect that its sliding stability is poor, which is specifically manifested in that the load-bearing cable 5 is easily deformed under the pressure of a thicker conveyor belt; but in fact, the specific structures of the embodiments of the movable connection structure 1 and the movable connection structure 2 can be replaced arbitrarily. When the embodiment of the movable connection structure 2 is replaced with the embodiment of the movable connection structure 1, it is only necessary to replace the end plate 3 3 with the end plate 1 1, and the end plate 4 4 ​​with the end plate 2 2. Such an movable connection structure 2 also has the ability to cross terrain due to the flexibility of the load-bearing cable 5, that is, when a protrusion is provided on the floor where the roller is installed, the load-bearing cable 5 can cross the protrusion; Figure 1 A specific embodiment of the present invention is Figure 1 The movable connection structure 1 and the movable connection structure 2 are respectively arranged as different embodiments to facilitate the understanding of the two embodiments.

[0033] In some embodiments of the present invention, the lifting structure can be a hydraulic lift, and the supporting capacity and telescopic range of the hydraulic lift far exceed the lifting scheme of the prior art in the aforementioned background technology; however, the hydraulic lift scheme still has major defects; therefore, the belt conveyor with a roller replacement structure provided by the present invention needs to be inserted between the conveying belt and the bottom of the installation roller. Once the distance between the two is too narrow, even if the hydraulic lift is in a fully retracted state, coupled with the thickness of end plate 1, end plate 2, end plate 3, and end plate 4, it is difficult to insert between the two, thereby causing the device to be unable to be implemented.

[0034] Therefore, in some other embodiments of the present invention, the lifting structure includes a plurality of adjustable connecting rod groups connected between the end plate 1 and the end plate 3, and between the end plate 2 and the end plate 4; each of the adjustable connecting rod groups includes a support plate 29 connected end to end through a hydraulic angle adjustment structure, the bottom end of the bottommost support plate 29 is also connected to the end plate 3 or the end plate 4 4 ​​through the hydraulic angle adjustment structure, and the top end of the topmost support plate 29 is hinged to the end plate 1 or the end plate 2.

[0035] Through the above arrangement, the load-bearing capacity of a single adjustable connecting rod group can be dispersed through multiple points. Compared with the gears in the background technology that directly bear the gravity component of the conveyor belt, the load-bearing capacity of the adjustable connecting rod group at multiple points far exceeds the background technology.

[0036] Furthermore, the hydraulic angle adjustment structure of the present invention can make the support plates 29 fold side by side. Figure 5 As shown, it does not occupy longitudinal space and can be accommodated on the outside of end plate 2 and end plate 4 (relative to the center of the device of the present invention).

[0037] refer to Figure 6 As shown, the hydraulic angle adjustment structure includes a nesting groove arranged on the relatively stationary side during the rotation process, an annular flow channel 18 is arranged around the nesting groove, and the annular flow channel 18 extends to the outside through a pipe 19, a valve is arranged in the pipe 19, a sleeve 20 is fixedly nested in the nesting groove, the sleeve 20 is provided with a sealing plate 1 21 extending along its radial direction, a connecting column 22 is nested in the axis of the sleeve 20, the connecting column 22 is fixedly connected to the relatively moving side during the rotation process, and the connecting column 22 is connected to a sealing plate 23 extending along its radial direction, the sealing plate 23 and one of the adjacent sealing plates 1 21 form a sealed hydraulic cavity 30, the sealing plate 23 and another adjacent sealing plate 1 21 are connected through an elastic member 24, and the annular flow channel 18 is in communication with the sealed hydraulic cavity 30 through a branch flow channel 25. The corresponding end surface of the sealing plate 23 is in arcuate contact with the inner wall of the sleeve 20; the corresponding end surface of the sealing plate 1 21 is in arcuate contact with the outer peripheral surface of the connecting column 22.

[0038] Liquid is injected through the pipeline 19 by external hydraulic equipment, and the liquid first enters the annular flow channel 18, and then the liquid can be evenly dispersed into the sealed hydraulic chamber 30 through the branch flow channel 25 of the annular flow channel 18, and the sealed hydraulic chamber 30 is formed by the sealing plate 23 and the sealing plate 1 21 being staggered and separated from each other. Each sealing plate 23 divides the space between two adjacent sealing plates 21 into two parts, and both parts are in a vacuum state. Then the part on one side is connected by the elastic member 24, and the sealing plate 23 is pushed to the sealing plate 1 21 on one side, so that the sealed hydraulic chamber 30 is in a minimum state. Then the liquid enters the sealed hydraulic chamber 30, and under the liquid pressure, the sealed hydraulic chamber 30 is continuously expanded, which is equivalent to the relative rotation of the connecting column 22 connected to the sealing plate 23 and the sleeve 20. When the sealed hydraulic chamber 30 is in the minimum state, the sealing plate 23 can be completely fitted with the sealing plate 1 21. It is only necessary to set a notch on the sealing plate 23 and the sealing plate 1 21 to facilitate the entry of liquid. Figure 6 As shown, the connecting column 22 and the sleeve 20 can rotate relative to each other by about 30 degrees.

[0039] The hydraulic angle adjustment structure is specifically installed in the process of each support plate 29 joint: first Figure 1 At the joints d and c in the figure, d is the relatively static side of the rotation adjustment, and the bottom end of c is the relatively rotation side; by analogy, the top end of c is the relatively static side, and the bottom end of b is the relatively rotation side; the top end of b is the relatively static side, and the bottom end of a is the relatively rotation side; in this way, the rotation of four joints is just completed, two on each side, which just ensures the horizontal rise of end plate 1 or end plate 2.

[0040] The connecting column 22, that is, the g part is fixedly connected to the relatively rotating side, and the h part refers to the relatively stationary side.

[0041] The advantage of this hydraulic angle adjustment structure is that the liquid pressure acts evenly on multiple sealing plates 23 (6 in this embodiment), and the force-bearing area is much larger than the several teeth of the gear in the comparative document, thereby greatly reducing the pressure and improving the load-bearing capacity of the device.

[0042] In the prior art, since the coal on the belt placed completely flat is easy to slide from both sides, and the relevant belt is generally set in a U-shape, that is, high on both sides and low in the middle, the relevant roller group is also set high on both sides and low in the middle. Such a flat-plate lifting cannot provide maintenance space between the belts and rollers on both sides. Therefore, in the present invention, the following settings are also made: The outer ends of the end plate 1 and the end plate 2 are also connected to a deformation plate 26 via a hydraulic angle adjustment structure.

[0043] The joint connection is that the top end of d is the relatively stationary side, and the bottom end of f is the relatively rotating side.

[0044] Moreover, the present invention adopts this hydraulic control method, and only flexible pipes are needed to connect various active joints. The connection is simple and convenient, and the flexible pipes do not affect the movement of the device. To close each active joint, it is only necessary to close the valve of the pipe 19. It also has high synchronization to ensure consistent movement, thereby making the lifting and lowering smooth.

[0045] In the present invention, a limiting rod 27 is provided at the bottom end of the end plate 2, and a limiting groove 28 for nesting the limiting rod 27 is provided on the end plate 4.

[0046] In this way, the stability of lifting can be further improved, but this will increase the height of the entire device of the present invention. Of course, the limiting rod 27 and the limiting groove 28 can also be deleted without affecting the overall function of the device.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A belt conveyor with a roller replacement structure, characterized in that: It includes an upper supporting member and a lower supporting member, both of which can be extended and retracted along the width direction of the conveyor belt until they are aligned with or exceed the edges of both sides of the width of the conveyor belt, and a lifting structure is provided between the two; The upper member comprises an end plate 1 (1) and an end plate 2 (2), and a movable connection structure 1 is provided between the end plate 1 (1) and the end plate 2 (2) to adjust the distance between the end plate 1 (1) and the end plate 2 (2); The lower support member comprises an end plate three (3) and an end plate four (4), and a movable connection structure two is provided between the end plate three (3) and the end plate four (4) to adjust the distance between the two.

2. The belt conveyor with a roller replacement structure according to claim 1, characterized in that: The movable connection structure 1 comprises a plurality of load-bearing cables (5) arranged between the end plate 1 (1) and the end plate 2 (2), one end of each load-bearing cable (5) being mounted on the end plate 2 (2) via a fixing seat (6), the end plate 1 (1) being nested in the middle of the load-bearing cable (5) by arranging a sliding sleeve seat (7) on a side close to the end plate 2 (2), and a rope retracting mechanism being arranged on the other side of the end plate 1 (1), the rope retracting mechanism being used to connect the other end of the load-bearing cable (5); The rope retracting and releasing mechanism comprises a hollow mounting portion (8) fixedly connected to the bottom surface of the end plate (1); the hollow mounting portion (8) is rotatably mounted with rotating rods (9) equal in number to the load-bearing ropes (5) through rotating holes; a rope winding drum (10) is fixedly sleeved on the rotating rod (9); the corresponding end of the load-bearing rope (5) is fixed on the rope winding drum (10); a slideway for the load-bearing rope (5) to slide through is provided in the hollow mounting portion (8) and in the end plate (1); a plurality of ratchets (11) are fixedly mounted on the outer surface of the hollow mounting portion (8) so as to be fixedly sleeved on either end of the rotating rod (9) in a one-to-one correspondence. A ratchet (12) is rotatably mounted on the end surface of the ratchet (11) opposite to the rotating rod (9), the ratchet (12) being adapted to the ratchet (11), the outer side of the ratchet (12) presenting a square side, the inner side of the ratchet (12) presenting a circular side, the end surface of the rotating rod (9) is further provided with a composite convex groove (13), the shape of the composite convex groove (13) being respectively able to match the inner and outer sides of the ratchet (12), and the composite convex groove (13) extending from one end close to the circular side to form a mounting plate portion (14), a return spring (15) being connected between the mounting plate portion (14) and the ratchet (12).

3. The belt conveyor with a roller replacement structure according to claim 1, characterized in that: The movable connection structure 2 comprises four slide grooves (16) arranged on both sides of the end plate 3 (3) and the end plate 4 (4) along the conveying direction, and a straight slide plate (17) is nested between the slide grooves (16) on the same side.

4. The belt conveyor with a roller replacement structure according to claim 1, characterized in that: The lifting structure comprises a plurality of adjustable connecting rod groups connected between the end plate 1 (1) and the end plate 3 (3), and between the end plate 2 (2) and the end plate 4 (4); Each of the adjustable connecting rod groups comprises support plates (29) connected end to end via a hydraulic angle adjustment structure, the bottom end of the bottommost support plate (29) is also connected to the end plate three (3) or the end plate four (4) via the hydraulic angle adjustment structure, and the top end of the topmost support plate (29) is hinged to the end plate one (1) or the end plate two (2).

5. The belt conveyor with a roller replacement structure according to claim 4, characterized in that: The hydraulic angle adjustment structure comprises a nesting groove arranged on the relatively stationary side during the rotation process, an annular flow channel (18) is arranged around the nesting groove, the annular flow channel (18) extends to the outside through a pipe (19), a valve is arranged in the pipe (19), a sleeve (20) is fixedly nested in the nesting groove, the sleeve (20) is provided with a sealing plate (21) extending along its radial direction, a connecting column (22) is nested on the axis of the sleeve (20), the connecting column (22) is fixedly connected to the relatively moving side during the rotation process, the connecting column (22) is connected to a sealing plate (23) extending along its radial direction, the sealing plate (23) and one of the adjacent sealing plates (21) form a sealed hydraulic chamber (30), the sealing plate (23) and another adjacent sealing plate (21) are connected through an elastic member (24), and the annular flow channel (18) is in communication with the sealed hydraulic chamber (30) through a branch flow channel (25).

6. The belt conveyor with a roller replacement structure according to claim 5, characterized in that: The corresponding end surface of the second sealing plate (23) is in arc-shaped contact with the inner wall of the sleeve (20); The corresponding end surface of the sealing plate 1 (21) is in arc-shaped contact with the outer peripheral surface of the connecting column (22).

7. The belt conveyor with a roller replacement structure according to claim 5, characterized in that: The outer ends of the end plate 1 (1) and the end plate 2 (2) are also connected to a deformation plate (26) via a hydraulic angle adjustment structure.

8. The belt conveyor with a roller replacement structure according to claim 1, characterized in that: A limiting rod (27) is provided at the bottom end of the second end plate (2), and a limiting groove (28) for nesting the limiting rod (27) is provided on the fourth end plate (4).

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