CN118744859A - A long-span load-balancing reduction roller - Google Patents

Abstract

The present invention discloses a long-span evenly loaded balanced reduction roller, which relates to the field of reduction rollers, including a roller body, wherein a filling assembly is arranged inside the roller body, wherein the filling assembly includes an outer tube, a top support plate and an inner tube, wherein the inner tube is rotatably mounted inside the outer tube, and the outer tube is fixedly mounted inside the roller body, and a stabilizing ring is fixedly connected to the bottom of the top support plate. The present invention arranges a filling assembly inside the roller body, and when subjected to stress, the stress is transferred to the top support plate through the roller body, and the top support plate then transfers the stress to the inner tube, thereby achieving balanced dispersion of the stress, thereby improving the overall bearing capacity, and at the same time, the position of the top support plate can be adjusted, and by moving the top support plate to different positions, it is ensured that the pressure of different types of goods can be evenly transferred to the inner tube, thereby solving the problem that the roller body may experience jumping, vibration, wear, deformation or bending due to uneven force.

Description

A long-span load-balancing reduction roller

Technical Field

The invention relates to the technical field of speed reduction rollers, in particular to a long-span evenly loaded balanced speed reduction roller.

Background Art

Speed reducer is usually used in industrial production to adjust the material transportation speed. It can reduce the material transportation speed by reducing the rotation speed of the roller or increasing the resistance. Speed reducer is often used in assembly line production or conveyor belt system to control the production rhythm or match the speed difference between different processes. This helps to improve production efficiency and ensure the smooth progress of the production process.

For example, in the "A Kind of Inert Reduction Roller" with publication number CN113526026A, a vertical plate is installed on the upper side of the support platform, and a driving motor, a reducer, a torsion sensor and an electric dynamometer are installed on the vertical plate in sequence from top to bottom. The central shaft of the driving motor is connected to the reducer, the reducer is connected to the torsion sensor through a coupling, the torsion sensor is connected to the electric dynamometer through a coupling, the torsion sensor is connected to the circular grating through a programmable line, and the torsion sensor, the driving motor and the electric dynamometer are all connected to the controller through programmable lines.

However, in the prior art, in order to carry more goods, some conveying mechanisms usually use longer reduction rollers to transport goods. However, the long span will cause the roller body to bear greater load and stress, and due to uneven force, jumping or vibration may occur during operation, and then uneven wear will occur, leading to damage to bearings and other components. At the same time, uneven force will also cause deformation or bending of the reduction roller, affecting the normal operation of the reduction roller.

Summary of the invention

The purpose of the present invention is to provide a long-span evenly loaded balanced reduction roller to solve the problem raised in the above-mentioned background technology that due to uneven force, jumping or vibration may occur during operation, and then uneven wear may occur, resulting in damage to bearings and other components. At the same time, uneven force may also cause deformation or bending of the reduction roller.

To achieve the above object, the present invention provides the following technical solution: a long-span load-equalizing balanced reduction roller, comprising a roller body, wherein a filling assembly is arranged inside the roller body;

The filling assembly comprises an outer tube, a top support plate and an inner tube, wherein the inner tube is rotatably mounted inside the outer tube, the outer tube is fixedly mounted inside the drum body, a stabilizing ring is fixedly connected to the bottom of the top support plate, a locking rod is threadedly connected to the intersection of the stabilizing ring and the top support plate, the edge of the top support plate is overlapped on the inner wall of the outer tube, the stabilizing ring is overlapped on the outer wall of the outer tube, and a first connecting rod is fixedly mounted on the inner wall of the stabilizing ring;

The first connecting rod is slidably connected to the inside of the inner tube, an outer inclined strip hole is provided at the intersection of the inner tube and the first connecting rod, an annular limiting groove is provided at the intersection of the first connecting rod and the inner tube, and the first connecting rod passes through the outer tube.

Preferably, a guide opening is provided at the junction of the outer tube and the first connecting rod, the guide opening is in a horizontal direction, and the outer inclined strip hole is arranged along the wall of the inner tube.

Preferably, a limiting ring is rotatably mounted on the inner wall of the outer tube, the limiting rings are located at both ends of the outer tube, the inner tube is located between the two limiting rings, and the inner tube is fixedly connected to the limiting rings by bolts.

Preferably, a middle inclined strip hole is opened on the tube body of the inner tube, the outer inclined strip hole is located on one side of the middle inclined strip hole, and a side inclined strip hole is arranged on the other side of the middle inclined strip hole.

Preferably, a strip hole in the middle of the zone is opened on the tube body of the inner tube, the strip hole in the middle of the zone is perpendicular to the guide opening, and the strip hole in the middle of the zone is located between the two side oblique strip holes.

Preferably, the middle inclined strip holes and the outer inclined strip holes are symmetrically distributed along the middle strip holes, the middle inclined strip holes are symmetrically distributed on both sides of the inner tube, and a second connecting rod is fixedly installed on the bottom of the stabilizing ring, and the second connecting rod and the first connecting rod are symmetrically distributed along the axis of the stabilizing ring.

Preferably, both ends of the drum body are fixedly installed with reinforcing outer rings, one side of the reinforcing outer ring is movably connected with a docking plate, a blocking plate is fixedly installed at the edge of the docking plate, and the reinforcing outer ring is inserted between the inner tube and the docking plate.

Preferably, a transmission rod is rotatably connected to one side of the docking plate, a support seat is movably connected to the outer wall of the transmission rod via a bearing, and the other end of the transmission rod is connected to the output end of the motor.

Preferably, a limiting rod is inserted into the interior of the blocking plate, one end of the limiting rod is inserted into the interior of the reinforced outer ring, and one side of the blocking plate is fixedly connected to the limiting ring.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, a filling assembly is arranged inside the drum body to improve the structural strength and overall bearing capacity of the drum body. The filling assembly mainly fills the gaps in the drum body through a plurality of top support plates to ensure that the stress can be effectively supported and dispersed in a long-span drum. When the drum body is subjected to stress, the stress will be transmitted to the top support plate through the drum body, and then transmitted to the inner tube by the top support plate, thereby achieving balanced dispersion of stress and improving the stability and bearing capacity of the overall structure. The position of the top support plate can be adjusted, which can ensure that the pressure of different types of goods is evenly transmitted to the inner tube. By adjusting the position of the top support plate, the problems of jumping, vibration, wear, deformation or bending of the drum body due to uneven force can be effectively solved. This design can not only improve the service life and stability of the equipment, but also improve the transportation efficiency and safety of goods. By arranging the filling assembly and the top support plate and adjusting the position, the drum body can be kept stable and reliable in long-term use, reducing failures and maintenance costs.

2. In the present invention, the inner tube and the outer tube are independent components. The outer tube is connected to the inner tube through a rotational connection via a limit ring, and is connected to the docking plate through the limit ring. Under normal use, the transmission rod can drive the drum body and the inner tube at the same time to ensure that the overall equipment can effectively transport goods, and the reinforced outer rings at both ends of the drum body are connected to the blocking plate through the limit rod. This design can ensure that the equipment maintains stability and functions normally during operation. When the position of the support plate needs to be adjusted, the operator can pull the limit rod out of the blocking plate to release the reinforced outer ring. In this way, the rotation of the transmission rod can no longer directly drive the drum body, but will only drive the rotation of the inner tube through the limit ring. Through the rotation of the inner tube, the support plate can be pushed to move to the two ends of the drum body, thereby realizing the adjustment of the position of the support plate. This design reduces the difficulty of operation when adjusting the position of the support plate, and improves the convenience and efficiency of operation.

3. In the present invention, the inner tube is provided with a middle strip hole, a side inclined strip hole, a middle inclined strip hole and an outer inclined strip hole to cooperate with the movement process of the top support plate, so as to ensure that the top support plate can adjust its position and adapt to the normal use of the conveyor belt. Each strip hole corresponds to a top support plate, and their positions and characteristics enable an orderly and gradually expanding overall spacing to be achieved when the top support plate is moved. In this design, if the top support plate is located in the outer inclined strip hole, the movement distance of the first connecting rod will be the farthest, which means that the top support plate can be quickly moved to the far end of the drum body; while in the middle inclined strip hole, the first connecting rod The moving distance of the top support plate is slightly shorter, thereby ensuring that the position of the top support plate can be adjusted within a certain range; and in the side inclined strip hole, the moving distance of the first connecting rod is the shortest, which helps to set the top support plate in the central area of the drum body and maintain a relatively centralized state. Through such a design, the top support plate can flexibly adjust its position as needed and maintain a relatively stable and centralized state inside the drum body, which helps to ensure the normal operation of the drum and the overall stability of the conveyor belt, which not only improves the operating efficiency of the equipment, but also helps to extend the service life of the drum body and the top support plate, and further reduces the possibility of maintenance and failure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of a long-span load-balanced reduction roller according to the present invention;

FIG2 is an enlarged schematic diagram of the structure of part A in FIG2 of the present invention;

FIG3 is a schematic diagram of the internal structure of a drum body of a long-span load-balanced reduction drum according to the present invention;

FIG4 is a top view of an outer tube of a long-span load-balanced reduction roller according to the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the outer tube and the top support plate of a long-span load-balanced reduction roller according to the present invention;

6 is a schematic diagram of the position and structure of the inner tube and the top support plate of a long-span load-balancing reduction roller according to the present invention;

FIG7 is a schematic diagram of a three-dimensional structure of a top support plate of a long-span load-balancing reduction roller according to the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the inner tube of a long-span load-equalizing balanced reduction roller according to the present invention.

In the figure: 1. drum body; 2. reinforcement outer ring; 3. filling assembly; 4. support seat; 5. transmission rod; 6. docking plate; 7. blocking plate; 8. limiting rod; 31. outer tube; 32. top support plate; 33. stabilizing ring; 34. guide opening; 35. limiting ring; 36. first connecting rod; 37. inner tube; 38. second connecting rod; 39. annular limiting groove; 310. locking rod; 311. central strip hole; 312. side inclined strip hole; 313. central inclined strip hole; 314. outer inclined strip hole.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1: Referring to Figures 1, 2, 3, 4, 5, 6, 7 and 8: A long-span load-balancing reduction roller comprises a roller body 1, a filling assembly 3 is arranged inside the roller body 1, and the filling assembly 3 comprises an outer tube 31, a top support plate 32 and an inner tube 37, the inner tube 37 is rotatably mounted inside the outer tube 31, the outer tube 31 is fixedly mounted inside the roller body 1, a stabilizing ring 33 is fixedly connected to the bottom of the top support plate 32, and the intersection of the stabilizing ring 33 and the top support plate 32 A locking rod 310 is threadedly connected thereto, the edge of the support plate 32 overlaps the inner wall of the outer tube 31, the stabilizing ring 33 overlaps the outer wall of the outer tube 31, a first connecting rod 36 is fixedly installed on the inner wall of the stabilizing ring 33, the first connecting rod 36 is slidably connected to the inside of the inner tube 37, an outer inclined strip hole 314 is provided at the junction of the inner tube 37 and the first connecting rod 36, an annular limiting groove 39 is provided at the junction of the first connecting rod 36 and the inner tube 37, and the first connecting rod 36 passes through the outer tube 31.

In this embodiment, the filling assembly 3 is arranged in the drum body 1 to fill the internal gap of the drum body 1. The main circuit structure and the driving structure are built in the inner tube 37 of the filling assembly 3. When in use, the top support plate 32 is concentrated in the central area of the drum body 1 to improve the structural strength of the drum body 1. The overall length of the drum body 1 is relatively long. When it is necessary to fully use all parts of the drum body 1, the top support plate 32 can be moved to the target position.

There are seven supporting plates 32 in total, and each supporting plate 32 is connected to the inner tube 37 through the first connecting rod 36. Since the first connecting rod 36 is restricted in the outer tube 31, when the inner tube 37 is rotated, the contact position between the outer inclined strip hole 314 and the first connecting rod 36 changes. At this time, the inner tube 37 will generate a thrust on the first connecting rod 36, and finally achieve the purpose of pushing the supporting plate 32;

The contact portion between the first connecting rod 36 and the inner tube 37 is provided with an annular limiting groove 39, and the first connecting rod 36 is supported by the inner tube 37 to ensure that the first connecting rod 36 will not be loose in structure. The supporting plate 32 moves toward the two ends of the drum body 1 along the direction of the inner tube 37 to support the drum body 1, and the movable structure can effectively reduce the overall mass to avoid affecting the normal rotation of the drum body 1.

The top support plate 32 is connected to the stabilizing ring 33 through the locking rod 310. The top support plate 32 can be released by pulling out the locking rod 310, so that a suitable top support plate 32 can be selected according to different drum bodies 1. When the drum body 1 is subjected to stress, the stress will be transmitted to the top support plate 32 through the drum body 1, and then transmitted to the inner tube 37 by the top support plate 32, so as to achieve balanced dispersion of stress and enhance the stability and bearing capacity of the overall structure. The position of the top support plate 32 can be adjusted to ensure that the pressure of different types of goods is evenly transmitted to the inner tube 37. By adjusting the position of the top support plate 32, problems such as jumping, vibration, wear, deformation or bending of the drum body 1 due to uneven force can be effectively solved.

Embodiment 2: As shown in Figures 4 and 5, a guide opening 34 is provided at the junction of the outer tube 31 and the first connecting rod 36, and the guide opening 34 is in a horizontal direction. The outer inclined strip hole 314 is arranged along the tube wall of the inner tube 37, and a limit ring 35 is rotatably installed on the inner wall of the outer tube 31. The limit ring 35 is located at both ends of the outer tube 31, and the inner tube 37 is located between the two limit rings 35. The inner tube 37 is fixedly connected to the limit ring 35 by bolts.

In this embodiment, the inner tube 37 and the outer tube 31 are independent components. The outer tube 31 is connected to the inner tube 37 by rotation through the limit ring 35, and the inner tube 37 is connected to the docking plate 6 through the limit ring 35. Under normal use, the transmission rod 5 can drive the drum body 1 and the inner tube 37 at the same time to ensure that the overall equipment can effectively transport goods. The guide opening 34 plays a very important role in this design. It is not only used to determine the moving route of the first connecting rod 36, but also plays a positioning role in the process of the first connecting rod 36 moving to prevent it from rotating. Through the guide opening 34, the first connecting rod 36 can be effectively guided to move along the set path to ensure that it does not deviate from the track during the movement, thereby ensuring the normal operation and stability of the equipment;

At the same time, the limiting rings 35 arranged at both ends of the outer tube 31 can effectively prevent the inner tube 37 from being misaligned with the outer tube 31, ensuring that their positions are aligned and stable. In addition, the limiting rings 35 also have the function of bearing and transmitting power, connecting the inner tube 37 with the external power source to achieve normal operation of the equipment;

The design of the integrated guide opening 34 and the limit ring 35 can coordinate the operation of various components of the equipment, ensure the stability and reliability of the overall structure, improve the operating efficiency of the equipment, extend the service life of the equipment, and reduce the risk of maintenance and failure.

Embodiment 3: As shown in Figures 5, 6 and 8, a middle inclined strip hole 313 is provided on the tube body of the inner tube 37, an outer inclined strip hole 314 is located on one side of the middle inclined strip hole 313, and a side inclined strip hole 312 is provided on the other side of the middle inclined strip hole 313, a zone middle strip hole 311 is provided on the tube body of the inner tube 37, the zone middle strip hole 311 is perpendicular to the guide opening 34, the zone middle strip hole 311 is located between the two side inclined strip holes 312, the middle inclined strip hole 313 and the outer inclined strip hole 314 are symmetrically distributed along the zone middle strip hole 311, and the middle inclined strip hole 313 is symmetrically distributed on both sides of the inner tube 37, and a second connecting rod 38 is fixedly installed on the bottom of the stabilizing ring 33, and the second connecting rod 38 and the first connecting rod 36 are symmetrically distributed along the axis of the stabilizing ring 33.

In this embodiment, the side inclined strip holes 312, the middle inclined strip holes 313 and the outer inclined strip holes 314 are symmetrically distributed along the middle strip hole 311. During the rotation of the inner tube 37, the strip holes at different positions have different effects on the movement of the first connecting rod 36, thereby achieving flexible adjustment and stable positioning of the top support plate 32.

In the middle inclined strip hole 313, the moving distance of the first connecting rod 36 is slightly shorter, which helps to adjust the position of the top support plate 32 and keep it relatively stable. In the side inclined strip hole 312, the moving distance of the first connecting rod 36 is the shortest, avoiding the position of the top support plate 32 from being offset. In the middle strip hole 311, the position of the first connecting rod 36 will not move and remain stable. In the outer inclined strip hole 314, the moving distance of the first connecting rod 36 is the farthest, so that the top support plate 32 can be quickly moved to the end of the drum body 1.

The moving distance in the overall design is arithmetic expansion, ensuring that the top support plate 32 can be quickly moved to the required position, and is arranged in a relatively concentrated state in the central area of the drum body 1 to adapt to the normal use of the conveyor belt. At the same time, the existence of the second connecting rod 38 can ensure that the top support plate 32 is always in a state of balanced force, further improving the stability and reliability of the equipment;

The support plate 32 can flexibly adjust its position as needed and maintain a relatively stable and centralized state inside the drum body 1, which helps to ensure the normal operation of the drum and the overall stability of the conveyor belt. It not only improves the operating efficiency of the equipment, but also helps to extend the service life of the drum body 1 and the support plate 32, and further reduces the possibility of maintenance and failure.

Embodiment 4: As shown in Figures 1, 2, 3 and 4, a reinforcing outer ring 2 is fixedly installed at both ends of the drum body 1, a docking plate 6 is movably connected to one side of the reinforcing outer ring 2, a blocking plate 7 is fixedly installed at the edge of the docking plate 6, the reinforcing outer ring 2 is inserted between the inner tube 37 and the docking plate 6, a transmission rod 5 is rotatably connected to one side of the docking plate 6, a support seat 4 is movably connected to the outer wall of the transmission rod 5 through a bearing, the other end of the transmission rod 5 is connected to the output end of the motor, a limiting rod 8 is inserted inside the blocking plate 7, one end of the limiting rod 8 is inserted inside the reinforcing outer ring 2, and one side of the blocking plate 7 is fixedly connected to the limiting ring 35.

In this embodiment, the reinforced outer rings 2 at both ends of the drum body 1 are inserted between the blocking plate 7 and the outer tube 31, which plays a role in confirming the position and preventing misalignment. At the same time, the docking plates 6 are located at both ends to ensure the normal transmission of the whole. In actual use, the transmission rod 5 is connected to the external power source, and the rotation of the drum body 1 is directly driven by the transmission rod 5 to ensure the normal operation of the equipment. The reinforced outer ring 2 is connected to the blocking plate 7 through the limit rod 8, and the inner tube 37 is connected to the docking plate 6 through the limit ring 35. Under normal circumstances, the drum body 1 will rotate synchronously with the inner tube 37 to ensure that the whole system transports goods smoothly, and the reinforced outer rings 2 at both ends of the drum body 1 are connected to the blocking plate 7 through the limit rod 8. This design can ensure that the equipment maintains stability and normal function during operation;

When it is necessary to adjust the position of the top support plate 32, the limit rod 8 can be pulled out to separate the drum body 1 from the docking plate 6. In this way, the rotation of the docking plate 6 will only drive the inner tube 37, thereby pushing the top support plate 32 to move to the required position. Through such a design, the position of the top support plate 32 can be flexibly adjusted to adapt to different transportation needs and cargo conditions. This design reduces the difficulty of operation when adjusting the position of the top support plate 32, and improves the convenience and efficiency of operation.

The use method and working principle of the device: when the limit rod 8 is inserted into the blocking plate 7, the drum body 1 and the docking plate 6 keep rotating together. While driving the inner tube 37, the docking plate 6 also drives the outer tube 31 through the drum body 1. There will be no relative rotation between the outer tube 31 and the inner tube 37. The supporting plate 32 can be concentrated at the center of the drum body 1 to support the top, thereby improving the structural strength of the drum body 1.

When the position of the top support plate 32 needs to be adjusted, the limit rod 8 is pulled out to separate the drum body 1 from the docking plate 6. At this time, the rotation of the docking plate 6 will only drive the inner tube 37 alone. When the inner tube 37 is rotated, the contact position between the outer inclined strip hole 314 and the first connecting rod 36 changes. At this time, the inner tube 37 will generate a thrust on the first connecting rod 36, and finally achieve the purpose of pushing the top support plate 32.

During the movement of the top support plate 32, the moving distance of the first connecting rod 36 in the middle inclined strip hole 313 is slightly shorter, the moving distance of the first connecting rod 36 in the side inclined strip hole 312 is the shortest, the side of the first connecting rod 36 in the middle strip hole 311 will not move at all, and the moving distance of the first connecting rod 36 in the outer inclined strip hole 314 is the farthest;

The moving distance is expanded arithmetic difference, which ensures that the top support plate 32 can be quickly moved to the end of the drum body 1. Since the top support plate 32 after the movement is arranged in a relatively concentrated state in the central area of the drum body 1, it is more suitable for the normal use of the conveyor belt. The existence of the second connecting rod 38 can ensure that the top support plate 32 is always in a state of balanced force.

The top support plate 32 is connected to the stabilizing ring 33 through the locking rod 310 and can be disassembled at any time. A suitable top support plate 32 is selected according to the size of the drum body 1. After adjusting the position of the top support plate 32, the limit rod 8 is reinserted between the blocking plate 7 and the reinforcing outer ring 2.

Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A long-span load-balancing reduction roller, comprising a roller body (1), characterized in that a filling component (3) is arranged inside the roller body (1); The filling assembly (3) comprises an outer tube (31), a top support plate (32) and an inner tube (37); the inner tube (37) is rotatably mounted inside the outer tube (31); the outer tube (31) is fixedly mounted inside the drum body (1); a stabilizing ring (33) is fixedly connected to the bottom of the top support plate (32); a locking rod (310) is threadedly connected to the intersection of the stabilizing ring (33) and the top support plate (32); the edge of the top support plate (32) overlaps the inner wall of the outer tube (31); the stabilizing ring (33) overlaps the outer wall of the outer tube (31); and a first connecting rod (36) is fixedly mounted on the inner wall of the stabilizing ring (33); The first connecting rod (36) is slidably connected to the inside of the inner tube (37); an outer inclined strip hole (314) is provided at the intersection of the inner tube (37) and the first connecting rod (36); an annular limiting groove (39) is provided at the intersection of the first connecting rod (36) and the inner tube (37); and the first connecting rod (36) passes through the outer tube (31). 2. A long-span load-balancing reduction roller according to claim 1, characterized in that: a guide opening (34) is provided at the junction of the outer tube (31) and the first connecting rod (36), the guide opening (34) is in a horizontal direction, and the outer inclined strip hole (314) is arranged along the wall of the inner tube (37). 3. A long-span load-balancing reduction roller according to claim 1, characterized in that: a limit ring (35) is rotatably installed on the inner wall of the outer tube (31), the limit ring (35) is located at both ends of the outer tube (31), the inner tube (37) is located between the two limit rings (35), and the inner tube (37) is fixedly connected to the limit ring (35) by bolts. 4. A long-span load-equalizing balanced reduction roller according to claim 2, characterized in that: a middle inclined strip hole (313) is opened on the tube body of the inner tube (37), the outer inclined strip hole (314) is located on one side of the middle inclined strip hole (313), and a side inclined strip hole (312) is provided on the other side of the middle inclined strip hole (313). 5. A long-span load-equalizing balanced reduction roller according to claim 4, characterized in that: a strip hole (311) is opened on the tube body of the inner tube (37), the strip hole (311) is perpendicular to the guide opening (34), and the strip hole (311) is located between the two side inclined strip holes (312). 6. A long-span load-equalizing balanced reduction roller according to claim 5, characterized in that: the middle inclined strip hole (313) and the outer inclined strip hole (314) are symmetrically distributed along the middle strip hole (311), the middle inclined strip hole (313) is symmetrically distributed on both sides of the inner tube (37), and a second connecting rod (38) is fixedly installed at the bottom of the stabilizing ring (33), and the second connecting rod (38) and the first connecting rod (36) are symmetrically distributed along the axis of the stabilizing ring (33). 7. A long-span load-balancing reduction roller according to claim 1, characterized in that: both ends of the roller body (1) are fixedly mounted with reinforcement outer rings (2), one side of the reinforcement outer ring (2) is movably connected with a docking plate (6), a blocking plate (7) is fixedly mounted at the edge of the docking plate (6), and the reinforcement outer ring (2) is inserted between the inner tube (37) and the docking plate (6). 8. A long-span load-balancing reduction roller according to claim 7, characterized in that: a transmission rod (5) is rotatably connected to one side of the docking plate (6), a support seat (4) is movably connected to the outer wall of the transmission rod (5) through a bearing, and the other end of the transmission rod (5) is connected to the output end of the motor. 9. A long-span load-balancing reduction roller according to claim 8, characterized in that: a limiting rod (8) is inserted into the interior of the blocking plate (7), one end of the limiting rod (8) is inserted into the interior of the reinforced outer ring (2), and one side of the blocking plate (7) is fixedly connected to the limiting ring (35).