A belt conveyor with a structure for replacing idlers

Abstract

The present invention relates to the technical field of belt conveying equipment, and discloses a belt conveyor with a roller replacement structure, which includes an upper pressing member and a lower supporting member that can both expand and contract along the width direction of the conveyor belt until they are aligned with or exceed the two side edges of the width of the conveyor belt, and a lifting structure is provided between the two; the upper pressing member includes a first end plate and a second end plate, and the distance between the first end plate and the second end plate is adjusted through a first movable connection structure; the lower supporting member includes 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 connection structure; in the present invention, the distance between the first end plate and the second end plate can be adjusted through the first movable connection structure, so as to adapt to the width of the belt, thereby avoiding the belt edge from falling due to gravity; the pressure of the force-bearing part is reduced through the hydraulic angle adjustment structure, making the device more stable; the first movable connection structure can automatically pay out the wire, and the structure is stable, and can share the gravity of the belt.

Description

Technical Field

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

[0002] A belt conveyor is a continuous conveying machine that uses a flexible conveyor as a material-carrying and traction member. The conveyor belt rotates around the driving roller and the redirecting roller, and the upper and lower branches between the two rollers are each supported by a number of rollers. When in use, the material is placed on the conveyor belt, and the conveyor belt and the material are dragged to run by the friction between the driving roller and the conveyor belt.

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

[0004] For example, a Chinese invention patent with the authorization announcement number CN113305552B discloses a roller replacement device for a coal mine belt conveyor, including a bottom plate. An elevating mechanism is installed above the bottom plate, and fixing mechanisms are installed on both sides below the bottom plate. The bottom plate, the elevating mechanism, and the fixing mechanisms are integrated into a whole. In the present invention, the belt is lifted by the elevating mechanism, and the whole device is fixed on the conveyor by the fixing mechanism. There is no need to cooperate with multiple tools, and only one person can complete the roller replacement operation, which saves time and effort and improves work efficiency. The elevating mechanism and the fixing mechanism are both installed on the support plate and are not easily lost, which is beneficial for future use.

[0005] However, the above solution has the following problems:

[0006] First, referring to Figure 1 , it mainly jacks up the conveyor belt by the top plate. However, in fact, the belt widths for transporting coal mines, gypsum boards, etc. are quite different from those for processing sports foods. The top plate in the above invention patent is not adjustable, so it is difficult to adapt to different belt widths, resulting in low applicability of the device.

[0007] 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 adjustable angle between the two is limited, mainly relying 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

[0008] The purpose of the present invention is to provide a belt conveyor with a roller replacement structure to solve the technical problems in the prior art.

[0009] The present invention provides a belt conveyor with a idler replacement structure, which includes an upper jacking member and a lower supporting member that can both extend and contract along the width direction of the conveyor belt until they are aligned with or exceed the two side edges of the width of the conveyor belt, and a lifting structure is provided between the two;

[0010] The upper jacking member includes a first end plate and a second end plate, and the distance between the first end plate and the second end plate is adjusted by a first movable connection structure;

[0011] The lower supporting member includes a third end plate and a fourth end plate, and the distance between the third end plate and the fourth end plate is adjusted by a second movable connection structure.

[0012] Furthermore, the first movable connection structure includes a plurality of load-bearing cables arranged between the first end plate and the second end plate. One end of each load-bearing cable is installed on the second end plate through a fixed seat. The middle part of the load-bearing cable is nested by the first end plate through a sliding sleeve seat arranged on the side close to the second end plate. A cable winding and unwinding mechanism is arranged on the other side of the first end plate, and the cable winding and unwinding mechanism is used to connect the other end of the load-bearing cable;

[0013] The cable winding and unwinding mechanism includes a hollow installation part fixedly connected to the bottom surface of the first end plate. The hollow installation part is rotatably installed with a plurality of rotating rods equal in number to the load-bearing cables through rotating holes. A cable winding cylinder is fixedly sleeved on the rotating rod, and the corresponding end of the load-bearing cable is fixed on the cable winding cylinder. Slideways for the load-bearing cable to slide through are provided both inside the hollow installation part and inside the first end plate. A plurality of ratchets are fixed on the outer surface of the hollow installation part to fixedly sleeve on any one end of the rotating rod one by one. A ratchet tooth is rotatably installed on the end surface of the ratchet opposite to the rotating rod. The ratchet tooth is adapted to the ratchet. The outer side of the ratchet tooth presents a square side, and the inner side of the ratchet tooth presents a circular side. A composite convex groove is also provided on the end surface of the rotating rod. The shape of the composite convex groove can respectively match the inner and outer sides of the ratchet tooth, and an installation plate part extends from one end of the composite convex groove close to the circular side. A return spring is connected between the installation plate part and the ratchet tooth.

[0014] Furthermore, the second movable connection structure includes four chutes respectively arranged on both sides of the third end plate and the fourth end plate along the conveying direction, and a straight-line sliding plate is nested between the chutes on the same side.

[0015] Furthermore, the lifting structure includes a plurality of adjustable link groups connected between the first end plate and the third end plate, and between the second end plate and the fourth end plate;

[0016] Each of the adjustable link groups includes support plates connected end to end through a hydraulic angle adjustment structure. The bottom end of the lowermost support plate is also connected to the third end plate or the fourth end plate through the hydraulic angle adjustment structure, and the top end of the uppermost support plate is hinged to the first end plate or the second end plate.

[0017] Further, the hydraulic angle adjustment structure includes a nested groove provided on the relatively stationary side during rotation. An annular flow channel is provided around the nested groove. The annular flow channel extends to the outside through a pipeline, and a valve is provided in the pipeline. A sleeve is fixedly nested in the nested groove. The sleeve is provided with a first sealing plate extending along its radial direction. A connecting column is nested at 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 second sealing plate extending along its radial direction. The second sealing plate and one of the adjacent first sealing plates form a sealed hydraulic cavity. The second sealing plate and the other adjacent first sealing plate are connected through an elastic member. The annular flow channel communicates with the sealed hydraulic cavity through a branch flow channel.

[0018] Further, the corresponding end face of the second sealing plate is arc-shaped and in contact with the inner wall of the sleeve;

[0019] The corresponding end face of the first sealing plate is arc-shaped and in contact with the outer peripheral surface of the connecting column.

[0020] Further, the outer ends of the first end plate and the second end plate are also connected with a deformation plate through a hydraulic angle adjustment structure.

[0021] Further, 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.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The present invention can adjust the distance between the first end plate and the second end plate through the first movable connection structure, so as to adapt to the width of the belt, and further avoid the belt edge from falling due to gravity;

[0024] (2) Compared with the situation in the background art where the local teeth of the gear bear the entire gravity of the belt, the present invention reduces the pressure of the stressed part through the hydraulic angle adjustment structure, making the device more stable;

[0025] (3) The present invention can automatically pay out the wire through the first movable connection structure, and has a stable structure and can share the gravity of the belt. Description of the Drawings

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a belt conveyor with a roller replacement structure according to the present invention;

[0028] Figure 2 It is Figure 1 a schematic diagram of the other side of the overall structure in the embodiment;

[0029] Figure 3 It is a schematic diagram of an angle of a ratchet and a ratchet tooth;

[0030] Figure 4 It is a schematic diagram of another angle of a ratchet and a ratchet tooth;

[0031] Figure 5 It is a schematic diagram when the adjustable link group is completely retracted;

[0032] Figure 6 It is a longitudinal section view of the hydraulic angle adjustment structure;

[0033] Figure 7 It is a schematic diagram of the internal structure of the hollow mounting part.

[0034] Reference numerals:

[0035] 1, first end plate; 2, second end plate; 3, third end plate; 4, fourth end plate; 5, load-bearing cable; 6, fixed seat; 7, sliding sleeve seat; 8, hollow mounting part; 9, rotating rod; 10, cable winding cylinder; 11, ratchet; 12, ratchet tooth; 13, composite convex groove; 14, mounting plate part; 15, return spring; 16, chute; 17, linear sliding plate; 18, annular flow channel; 19, pipeline; 20, sleeve; 21, first sealing plate; 22, connecting column; 23, second sealing plate; 24, elastic member; 25, branch flow channel; 26, deformable plate; 27, limiting rod; 28, limiting groove; 29, support plate; 30, sealed hydraulic cavity. Specific embodiments

[0036] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0037] The components of the embodiments of the present invention that are usually described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] As Figures 1 to 7 shown, the present invention provides a belt conveyor with a idler replacement structure, including an upper jacking member and a lower supporting member that can both extend and contract along the width direction of the conveyor belt until they align with or exceed the two side edges of the width of the conveyor belt, and a lifting structure is provided between the two; the upper jacking member includes end plate one 1 and end plate two 2, and the distance between the end plate one 1 and the end plate two 2 is adjusted through a movable connection structure one; the lower supporting member includes end plate three 3 and end plate four 4, and the distance between the end plate three 3 and the end plate four 4 is adjusted through a movable connection structure two.

[0042] In the present invention, the movable connection structure one and the movable connection structure two can have exactly the same structure or completely different structures.

[0043] In some embodiments of the present invention, the first movable connection structure includes a plurality of load-bearing cables 5 disposed between the first end plate 1 and the second end plate 2. One end of each load-bearing cable 5 is mounted on the second end plate 2 through a fixing seat 6 (i.e., a common fixing member). The middle part of the load-bearing cable 5 is nested by the first end plate 1 by providing a sliding socket 7 (i.e., a connecting member such as a sleeve, and balls can be provided on its inner wall to reduce the sliding friction) on the side close to the second end plate 2. A cable winding and unwinding mechanism is provided on the other side of the first end plate 1, and the cable winding and unwinding mechanism is used to connect the other end of the load-bearing cable 5. The cable winding and unwinding mechanism includes a hollow mounting portion 8 fixedly connected to the bottom surface of the first end plate 1. The hollow mounting portion 8 is rotatably mounted through a rotating hole with a plurality of rotating rods 9 equal in number to the load-bearing cables 5. A cable winding cylinder 10 is fixedly sleeved on the rotating rod 9, and the corresponding end of the load-bearing cable 5 is fixed on the cable winding cylinder 10. Slideways for the load-bearing cable 5 to slide through are provided both inside the hollow mounting portion 8 and inside the first end plate 1. A plurality of ratchets 11 are fixed on the outer surface of the hollow mounting portion 8 to fixedly sleeve on either end of the rotating rod 9 in a one-to-one correspondence. A ratchet tooth 12 is rotatably mounted on the end surface of the ratchet 11 opposite to the rotating rod 9. The ratchet tooth 12 is adapted to the ratchet 11. The outer side of the ratchet tooth 12 presents a square side, and the inner side of the ratchet tooth 12 presents a circular side. A composite convex groove 13 is further provided on the end surface of the rotating rod 9. The shape of the composite convex groove 13 can respectively match the inner and outer sides of the ratchet tooth 12, and an installation plate portion 14 is formed by extending one end of the composite convex groove 13 close to the circular side. A return spring 15 is connected between the installation plate portion 14 and the ratchet tooth 12.

[0044] Through the limitation of the first movable connection structure in the above embodiments, first, through the limitation of the side shape of the ratchet tooth 12, the special shape of the composite convex groove 13 enables the ratchet tooth 12 to rotate to one side, so that the ratchet tooth 12 can rotate relative to the ratchet 11. The composite convex groove 13 provides a space for installing the return spring 15, which helps the ratchet tooth 12 to automatically reset when the rotation stops and maintain the locked rotation. Then, the whole device is inserted between the installation seat of the conveyor belt and the idler from one side. Then, when the second end plate 2 is pulled outward (relative to the center of the whole device) by manpower, a rope traction or a device such as a mechanical claw on the other side, the cable winding cylinder 10 can perform the action of releasing the load-bearing cable 5 through the one-way locking function of the ratchet tooth 12 and the ratchet 11, and then automatically extend the length of the load-bearing cable 5 between the first end plate 1 and the second end plate 2. The pulled-out load-bearing cable 5 can support the conveyor belt.

[0045] The other end of the rotating rod 9 can be mounted on the hollow mounting portion 8 through a coil spring. Thus, when the traction of the second end plate 2 stops and the ratchet tooth 12 is manually toggled, the locking of the load-bearing cable 5 is released, and then the rotating rod 9 can automatically retract the load-bearing cable 5, or it can also be retracted manually.

[0046] In the above setting process, first, the force borne by a single load-bearing cable 5 is shared by increasing the number of load-bearing cables 5. Second, the load-bearing cable 5 is wound around the cable winding cylinder 10, so as to disperse the force borne by the ratchet teeth 12 and the ratchet wheel 11 actually participating in the locking function, because the tooth structure is prone to wear when bearing excessive force; moreover, the conveyor belt mainly exerts a downward force on the load-bearing cable 5, and the downward pressure is transferred to the lifting structure by the cable winding cylinder 10 and the rotating rod 9. The lateral force borne by the ratchet teeth 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 winding cylinder 10 when it fits the conveyor belt. Therefore, the ratchet teeth 12 and the ratchet wheel 11 have a higher service life compared with the gears directly bearing the gravity component force of the conveyor belt in the background art.

[0047] In some embodiments of the present invention, the second movable connection structure includes four sliding grooves 16 respectively arranged on both sides of the third end plate 3 and the fourth end plate 4 along the conveying direction, and a straight-line sliding plate 17 is nested between the sliding grooves 16 on the same side.

[0048] Due to the limitation of the above embodiment of the second movable connection structure, the second movable connection structure can slide linearly in a relatively stable manner. Its advantage lies in its stable sliding trajectory, and its disadvantage is that it is difficult to have a large telescopic range, and its telescopic range largely depends on the length of the straight-line sliding plate 17.

[0049] As can be seen from the above introduction, the embodiment of the first movable connection structure provided by the present invention has a relatively large telescopic length, but its disadvantage is that its sliding stability is poor, specifically manifested as the load-bearing cable 5 is prone to deformation under the pressure of the relatively thick conveyor belt; however, in fact, the specific structures of the first movable connection structure and the second movable connection structure can be replaced arbitrarily. When the embodiment of the second movable connection structure is replaced with the embodiment of the first movable connection structure, only the third end plate 3 needs to be replaced with the first end plate 1, and the fourth end plate 4 needs to be replaced with the second end plate 2. Such a second movable connection structure also has the ability to cross terrain due to the flexibility of the load-bearing cable 5. That is, when there is a protrusion on the floor where the idler is installed, the load-bearing cable 5 can cross the protrusion; Figure 1 For a specific embodiment of the present invention, in Figure 1 setting the first movable connection structure and the second movable connection structure as different embodiments respectively is for the convenience of understanding these two embodiments separately.

[0050] In some embodiments of the present invention, the lifting structure may be a hydraulic lift, and the supporting capacity and telescopic range of the hydraulic lift far exceed the lifting solutions of the prior art in the aforementioned background art; however, the solution of the hydraulic lift still has relatively large 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 where the rollers are installed. Once the distance between the two is too narrow, even when the hydraulic lift is in a fully retracted state, plus the thicknesses of end plate 1, end plate 2, end plate 3, and end plate 4, it is difficult to insert between the two, resulting in the inability to implement the device.

[0051] Therefore, in some other embodiments of the present invention, the lifting structure includes a plurality of adjustable link groups connected between end plate 1 and end plate 3, and between end plate 2 and end plate 4; each adjustable link group includes a support plate 29 connected end to end through a hydraulic angle adjustment structure, and the bottom end of the lowermost support plate 29 is also connected to end plate 3 or end plate 4 through the hydraulic angle adjustment structure, and the top end of the uppermost support plate 29 is hinged to end plate 1 or end plate 2.

[0052] Through the above settings, the load-bearing of a single adjustable link group can be dispersed through multiple points. Compared with the gear in the background art that directly bears the gravity component of the conveyor belt, the load-bearing capacity of the adjustable link group at multiple points far exceeds that of the background art.

[0053] Moreover, through the hydraulic angle adjustment structure of the present invention, the support plates 29 can be folded side by side, as Figure 5 shown, so as not to occupy longitudinal space and can be stored outside end plate 2 and end plate 4 (relative to the center of the device of the present invention).

[0054] Refer to Figure 6 shown, the hydraulic angle adjustment structure includes a nested groove on the relatively stationary side during rotation, an annular flow channel 18 is provided around the nested groove, the annular flow channel 18 extends to the outside through a pipe 19, a valve is provided in the pipe 19, a sleeve 20 is fixedly nested in the nested 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 rotation, the connecting column 22 is provided with a sealing plate 2 23 extending along its radial direction, the sealing plate 2 23 and one adjacent sealing plate 1 21 form a sealed hydraulic cavity 30, the sealing plate 2 23 and the other adjacent sealing plate 1 21 are connected through an elastic member 24, and the annular flow channel 18 communicates with the sealed hydraulic cavity 30 through a branch flow channel 25. The corresponding end face of the sealing plate 2 23 is arc-shaped in contact with the inner wall of the sleeve 20; the corresponding end face of the sealing plate 1 21 is arc-shaped in contact with the outer peripheral surface of the connecting column 22.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 prior art, thereby greatly reducing the pressure and improving the load-bearing capacity of the device.

[0059] 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:

[0060] 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.

[0061] 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.

[0062] Moreover, with this hydraulic control method adopted by the present invention, only flexible pipes are needed to connect each movable joint. The connection is simple and convenient, and the flexible pipes do not affect the movement of the device. To close each movable joint, only the valve of the pipe 19 needs to be closed. In addition, it has a high synchronization, ensuring consistent movement, thus making the lifting stable.

[0063] In the present invention, 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.

[0064] In this way, the stability of the lifting can be further improved. However, 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, which will not affect the overall function of the device.

[0065] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions 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; The lifting structure includes a plurality of adjustable connecting rod groups connected between end plate one (1) and end plate three (3), and between end plate two (2) and end plate four (4); Each adjustable link group 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 end plate three (3) or end plate four (4) via the hydraulic angle adjustment structure, and the top end of the topmost support plate (29) is hinged to end plate one (1) or end plate two (2); 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, a sealing plate (23) extending along the radial direction of the connecting column (22), the sealing plate (23) and one of the adjacent sealing plates (21) form a sealed hydraulic chamber (30), the sealing plate (23) and the other 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); Liquid is injected through the pipeline (19) by an external hydraulic device. The liquid first enters the annular flow channel (18). 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). The sealed hydraulic chamber (30) is formed by the sealing plate 2 (23) and the sealing plate 1 21 being staggered and spaced apart from each other. Each sealing plate 2 (23) divides the space between two adjacent sealing plates 1 (21) into two parts. Both parts are in a vacuum state. Then, the part on one side is connected by an elastic member (24) to push the sealing plate 2 (23) toward 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). Under the pressure of the liquid, the sealed hydraulic chamber (30) is continuously expanded, which is equivalent to the connection column (22) connected to the sealing plate 2 (23) and the sleeve (20) rotating relative to each other.

2. A 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 matched with 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 one end of the composite convex groove (13) close to the circular side is extended to form a mounting plate portion (14), and a return spring (15) is connected between the mounting plate portion (14) and the ratchet (12).

3. A 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 slide plate (17) in the same straight line is nested between the slide grooves (16) on the same side.

4. A belt conveyor with a roller replacement structure according to claim 1, 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).

5. A belt conveyor with a roller replacement structure according to claim 1, 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.

6. A 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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