High waterproof and high load short shaft structure carrier roller

Abstract

The present application belongs to the technical field of conveying idler, and particularly relates to a high-waterproof high-load short-shaft structure idler, which comprises a variable idler assembly, a middle idler assembly, a liquid storage cylinder, a tee joint assembly, a deviation rectifying driving assembly, a pressure adjusting assembly, a shock buffering assembly, a pressure amplifying assembly and a rack, the rack is provided with idler supports in an array, and the middle idler assembly is arranged on the idler supports. The shock buffering assembly is elastically stretched and contracted to absorb and buffer the impact on the variable idler assembly. When the conveying belt is detected to be deviated to one side, the deviation rectifying driving assembly can actively increase the supporting force of the variable idler assembly to push the conveying belt to the other side, so that the technical purpose of deviation rectification is achieved. In addition, the longitudinal position of the floating valve core can automatically control the closing of the side valve of the tee joint during the deviation rectification.

Description

Technical Field

[0001] This invention belongs to the field of conveyor roller technology, specifically referring to a short-shaft structure roller with high waterproof and high load capacity. Background Technology

[0002] For heavy-duty transportation of large-scale bulk materials such as stone, short-shaft idlers are often used to support the conveyor belt. The small span of the short-shaft idlers can improve the load-bearing capacity. The short shafts can also be installed at a certain angle, so that the cross-section of the conveyor belt has a trough structure, thereby improving the conveying capacity.

[0003] In heavy-duty transportation scenarios, conveyor belts often deviate from their designated path. Setting up hydraulic correction devices on both sides is a common technical solution. However, current hydraulic correction solutions mostly involve adding other lateral movement and pushing mechanisms in addition to idlers. This not only makes it easy to misjudge the amount of deviation, but also causes abnormal situations such as folding and flexible deformation of the conveyor belt due to the small lateral support area.

[0004] Furthermore, during the transportation of stones, the idler rollers are subjected to high-frequency impacts, which often act directly on the bearings of the idler rollers, reducing the lifespan of both the bearings and the idler rollers. Summary of the Invention

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a short-shaft structure idler with high waterproof and high load-bearing capacity. This solution replaces the traditional hydraulic system, which requires connection to a pump station, with a closed-loop hydraulic system, significantly reducing system complexity. During normal conveying, the elastic extension and contraction of the vibration buffer component absorbs and buffers the impact on the variable idler assembly. When the conveyor belt is detected to be deviating to one side, the correction drive component can actively increase the support force of the variable idler assembly, pushing the conveyor belt to the other side to achieve the technical objective of correction. In addition, during the correction process, the side valve of the three-way connector can be automatically closed by controlling the longitudinal position of the floating valve core. By turning off the oscillation buffer function of the oscillation buffer component, the liquid exchange between the liquid storage tank and the regulating box is stopped; thus avoiding the passive expansion and contraction of the telescopic cavity from interfering with the active correction of the correction drive component.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a short shaft structure idler roller with high waterproof and high load capacity, including a variable idler roller assembly, an intermediate idler roller assembly, a liquid storage tank, a three-way assembly, a correction drive assembly, a pressure regulating assembly, an oscillation buffer assembly, a pressure amplification assembly, and a frame. Idler roller supports are arrayed on the frame, and the intermediate idler roller assembly is disposed on the idler roller supports. The variable idler assembly is mounted on the idler bracket and is symmetrically arranged on both sides of the intermediate idler assembly. The liquid storage tank is mounted on the frame and communicates with the variable idler assembly. The three-way assembly is located at the bottom of the liquid storage tank and communicates with the correction drive assembly. The pressure regulating component is mounted on the frame, the correction drive component is located within the pressure regulating component, and the oscillation buffer component is mounted on the frame and communicates with the pressure regulating component. The pressure regulating component can sense pressure changes inside the variable idler assembly. When a significant deviation of the conveyor belt is detected, the correction drive component actively adjusts to change the lateral thrust on the conveyor belt, restoring it to the center position.

[0007] Furthermore, the variable idler assembly includes a hollow shaft, a rotating bracket, a rubber tire, and a rotating seal. The hollow shaft is disposed in the idler bracket, the rotating bracket is rotatably disposed on the hollow shaft, and both the hollow shaft and the rotating bracket are provided with hollow portions. The rubber tire is disposed on the rotating bracket, and the rotating seal is disposed between the hollow shaft and the rotating bracket.

[0008] The structure of the variable idler assembly is similar to that of the intermediate idler assembly. The difference is that the hollow shaft, the rotating support, and the rubber tire are connected by a perforated section, and the transmission fluid is stored in the interlayer of the three. Therefore, when the pressure on the variable idler assembly changes, the pressure of the internal oil will also change accordingly. Furthermore, as the amount of oil inside the variable idler assembly increases, the diameter of the variable idler assembly will also increase.

[0009] Furthermore, a metal supply pipe is provided at the top of the liquid storage cylinder, and the end of the metal supply pipe is connected to the hollow shaft. A steel wire curtain is provided between the rubber tire and the rotating support.

[0010] Similar to the cord layers in a car tire, steel cords have the function of holding the rubber tire in place and preventing it from forming a spindle shape. Under the pulling action of the steel cords, the rubber tire will expand when the internal pressure increases, but it will expand synchronously in multiple sections, thereby improving the uniformity of the rubber tire diameter change process.

[0011] Furthermore, the three-way assembly includes a three-way connector, a resilient retaining ring, and a floating valve core, with the three-way connector located below the liquid storage cylinder. Preferably, the elastic retaining ring is fixed inside the tee connector, and the floating valve core is slidably disposed inside the elastic retaining ring. When the floating valve core is subjected to the longitudinal thrust of the liquid, it can slide across the elastic retaining ring between two positions. When the floating valve core is in the high position, the side joint of the tee connector is closed.

[0012] The elastic retaining ring can undergo elastic deformation. When the floating valve core is subjected to a certain longitudinal thrust, it can pass over the elastic retaining ring and slide to another position. Furthermore, the correction drive assembly includes a square cylinder, a square piston, and an electric actuator. The outer shell of the electric actuator is disposed in the square cylinder, the square piston is engaged and slidably disposed in the square cylinder, the telescopic part of the electric actuator is disposed on the square piston, and the bottom connector of the tee joint is connected to the square cylinder through a pipe.

[0013] By actively extending and retracting the electric actuator, the liquid flow between the square cylinder and the three-way connector can be controlled, thereby actively supplying liquid to the variable idler assembly during correction. This increases both the internal pressure and the outer diameter of the rubber tire, thus achieving the technical objective of pushing the conveyor belt to move laterally and correcting its position.

[0014] Furthermore, the pressure regulating assembly includes an regulating box and an regulating stud. The regulating box is mounted on the frame, the regulating stud is adjustablely disposed in the regulating box, the square cylinder is disposed in the regulating box, and the side connector of the tee is connected to the regulating box via a pipe.

[0015] By adjusting the rotation of the adjusting stud, the extent to which the adjusting stud penetrates into the adjusting box can be changed, thereby altering the actual volume inside the adjusting box and calibrating the liquid base pressure inside the variable idler assembly.

[0016] Furthermore, the frame is provided with a crossbeam, and the vibration buffer assembly includes a fixed seat, a telescopic cavity, and a buffer spring. The fixed seat is located on the crossbeam, the telescopic cavity is located on the fixed seat, and the telescopic cavity and the adjustment box are connected by a pipe. The two ends of the buffer spring are respectively located on the fixed part and the sliding part of the telescopic cavity.

[0017] Furthermore, the intermediate idler assembly includes an intermediate shaft, an intermediate support, and an intermediate tire. The intermediate shaft is fixedly connected to the idler support, the intermediate support is rotatably mounted on the intermediate shaft, and the intermediate tire is fixedly connected to the intermediate support.

[0018] Preferably, the intermediate idler assembly further includes a bearing disposed between the intermediate shaft and the intermediate support, and the bearing is also disposed between the hollow shaft and the rotating support.

[0019] Furthermore, the pressure amplification assembly includes a balance piston, a thin fixed cylinder, and a thin telescopic cylinder. The balance piston is engaged and slidably disposed in the liquid storage cylinder. The thin fixed cylinder is fixedly connected to the top of the balance piston. The thin telescopic cylinder is engaged and slidably disposed in the thin fixed cylinder. The end of the thin telescopic cylinder is fixedly connected to the balance piston. The metal liquid supply pipe is disposed between the thin fixed cylinder and the hollow shaft.

[0020] The two ends of the balancing piston are subjected to the pressure of two liquids respectively, and are in a state of equilibrium under the action of the two. Under the premise that the pressure on both sides is the same, the different areas of force application result in different liquid pressures, thereby achieving the technical purpose of amplifying pressure through the area difference of the piston.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The pressure adjustment component can sense the pressure change inside the variable idler assembly, so that when the conveyor belt is obviously deviated, the lateral thrust on the conveyor belt can be changed by the active adjustment of the deviation correction drive component, so that it can be restored to the middle position.

[0022] (2) The structure of the variable idler assembly is similar to that of the intermediate idler assembly. The difference is that the hollow shaft, the rotating support and the rubber tire are connected by a hollow part, and the transmission fluid is stored in the interlayer of the three. Therefore, when the pressure on the variable idler assembly changes, the pressure of the internal oil will also change. And as the amount of oil inside the variable idler assembly increases, the diameter of the variable idler assembly will also increase.

[0023] (3) The elastic retaining ring can undergo elastic deformation. When the floating valve core is subjected to a certain longitudinal thrust, it can pass over the elastic retaining ring and slide to another position.

[0024] (4) By actively extending and retracting the electric push rod, the liquid flow between the square cylinder and the three-way joint can be controlled, thereby actively supplying liquid to the variable idler assembly during correction, which can increase the internal pressure and increase the outer diameter of the rubber tire, thereby achieving the technical purpose of pushing the conveyor belt to move laterally and correcting the position.

[0025] (5) By adjusting the rotation of the adjusting stud, the extent to which the adjusting stud penetrates into the adjusting box can be changed, thereby changing the actual volume inside the adjusting box, and thus calibrating the liquid base pressure inside the variable idler assembly.

[0026] (6) The two ends of the balance piston are subjected to the pressure of two liquids respectively, and are in a state of equilibrium under the action of the two. Under the premise that the pressure on both sides is the same, the different areas of force application result in different liquid pressures, thereby achieving the technical purpose of amplifying pressure through the area difference of the piston.

[0027] (7) Steel cord is similar to the cord layer in automobile tires. It has the function of holding the rubber tire and preventing it from forming a spindle shape. Under the pulling action of steel cord, the rubber tire will expand when the internal pressure increases, but it will expand in multiple sections simultaneously, thereby improving the uniformity of the rubber tire diameter change process. Attached Figure Description

[0028] Figure 1 This is a perspective view of a short-shaft structure idler roller with high waterproof and high load-bearing capacity proposed in this invention. Figure 2 This is a front view of a short-shaft structure idler roller with high waterproof and high load-bearing capacity proposed in this invention. Figure 3This is a left view of a short-shaft structure idler roller with high waterproof and high load-bearing capacity proposed in this invention. Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 3 A cross-sectional view along the cutting line BB; Figure 6 for Figure 3 A cross-sectional view along the section line CC; Figure 7 for Figure 6 A magnified view of a section at point I; Figure 8 for Figure 4 Enlarged view of a section at point II; Figure 9 for Figure 4 Enlarged view of a section at point III; Figure 10 for Figure 5 A magnified view of a section at point IV; Figure 11 for Figure 7 A magnified view of section V.

[0029] The components include: 1. Variable idler assembly; 2. Intermediate idler assembly; 3. Liquid storage tank; 4. T-joint assembly; 5. Correction drive assembly; 6. Pressure regulating assembly; 7. Vibration buffer assembly; 8. Pressure amplification assembly; 9. Frame; 11. Hollow shaft; 12. Rotary support; 13. Rubber tire; 14. Rotary seal; 21. Intermediate shaft; 22. Intermediate support; 23. Intermediate tire; 24. Bearing; 31. Metal supply pipe; 41. T-joint; 42. Elastic retaining ring; 43. Floating valve core; 51. Square cylinder; 52. Square piston; 53. Electric actuator; 61. Adjustment box; 62. Adjustment stud; 71. Fixed seat; 72. Telescopic cavity; 73. Buffer spring; 81. Balance piston; 82. Thin fixed cylinder; 83. Thin telescopic cylinder; 91. Idler support; 92. Crossbeam; 131. Steel wire curtain.

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] like Figures 1-11 As shown, the present invention proposes a short shaft structure idler roller with high waterproof and high load capacity, including a variable idler roller assembly 1, an intermediate idler roller assembly 2, a liquid storage tank 3, a three-way assembly 4, a correction drive assembly 5, a pressure regulating assembly 6, an oscillation buffer assembly 7, a pressure amplification assembly 8, and a frame 9. Idler roller supports 91 are arrayed on the frame 9, and the intermediate idler roller assembly 2 is disposed on the idler roller supports 91. The variable idler assembly 1 is mounted on the idler bracket 91. The variable idler assembly 1 is symmetrically mounted on both sides of the intermediate idler assembly 2. The liquid storage tank 3 is mounted on the frame 9 and is connected to the variable idler assembly 1. The three-way assembly 4 is mounted at the bottom of the liquid storage tank 3 and is connected to the correction drive assembly 5. The pressure regulating component 6 is mounted on the frame 9, the correction drive component 5 is located in the pressure regulating component 6, and the oscillation buffer component 7 is mounted on the frame 9 and is connected to the pressure regulating component 6. The pressure regulating component 6 can sense the pressure changes inside the variable idler assembly 1. When the conveyor belt is detected to be running off track, the lateral thrust on the conveyor belt is changed by the active adjustment of the correction drive component 5, so that it can be restored to the middle position.

[0034] The variable idler assembly 1 includes a hollow shaft 11, a rotating bracket 12, a rubber tire 13, and a rotating seal 14. The hollow shaft 11 is disposed in the idler bracket 91, and the rotating bracket 12 is rotatably disposed on the hollow shaft 11. Both the hollow shaft 11 and the rotating bracket 12 are provided with hollow parts. The rubber tire 13 is disposed on the rotating bracket 12, and the rotating seal 14 is disposed between the hollow shaft 11 and the rotating bracket 12.

[0035] The structure of the variable idler assembly 1 is similar to that of the intermediate idler assembly 2. The difference is that the hollow shaft 11, the rotating bracket 12 and the rubber tire 13 are connected by a hollow part, and the transmission fluid is stored in the interlayer of the three. Therefore, when the pressure on the variable idler assembly 1 changes, the pressure of the internal oil will also change. Furthermore, as the amount of oil inside the variable idler assembly 1 increases, the diameter of the variable idler assembly 1 will also increase.

[0036] The top of the liquid storage cylinder 3 is provided with a metal liquid supply pipe 31, the end of which is connected to the hollow shaft 11, and a steel wire curtain 131 is provided between the rubber tire 13 and the rotating support 12.

[0037] The three-way assembly 4 includes a three-way connector 41, an elastic retaining ring 42, and a floating valve core 43. The three-way connector 41 is located below the liquid storage cylinder 3. The elastic retaining ring 42 is fixed inside the three-way connector 41. The floating valve core 43 is slidably located inside the elastic retaining ring 42. When the floating valve core 43 is subjected to the longitudinal thrust of the liquid, it can slide across the elastic retaining ring 42 between two positions. When the floating valve core 43 is in the high position, the side connector of the three-way connector 41 is closed.

[0038] The elastic retaining ring 42 can undergo elastic deformation. When the floating valve core 43 is subjected to a certain longitudinal thrust, it can pass over the elastic retaining ring 42 and slide to another position. The correction drive assembly 5 includes a square cylinder 51, a square piston 52, and an electric actuator 53. The outer shell of the electric actuator 53 is located in the square cylinder 51. The square piston 52 is engaged and slidably located in the square cylinder 51. The telescopic part of the electric actuator 53 is located on the square piston 52. The bottom connector of the tee connector 41 is connected to the square cylinder 51 through a pipe.

[0039] By actively extending and retracting the electric actuator 53, the liquid flow between the square cylinder 51 and the three-way connector 41 can be controlled, thereby actively supplying liquid to the variable idler assembly 1 during correction. This can increase the internal pressure and increase the outer diameter of the rubber tire 13, thus achieving the technical purpose of pushing the conveyor belt to move laterally and correcting the position.

[0040] The pressure regulating assembly 6 includes an regulating box 61 and an regulating stud 62. The regulating box 61 is mounted on the frame 9. The regulating stud 62 is adjustablely mounted in the regulating box 61. The square cylinder 51 is mounted in the regulating box 61. The side connector of the tee connector 41 is connected to the regulating box 61 via a pipe.

[0041] By adjusting the rotation of the stud 62, the extent to which the stud 62 penetrates into the adjustment box 61 can be changed, thereby changing the actual volume inside the adjustment box 61, and thus calibrating the liquid base pressure inside the variable idler assembly 1.

[0042] The frame 9 is provided with a crossbeam 92. The vibration buffer assembly 7 includes a fixed seat 71, a telescopic cavity 72 and a buffer spring 73. The fixed seat 71 is provided on the crossbeam 92, and the telescopic cavity 72 is provided on the fixed seat 71. The telescopic cavity 72 and the adjustment box 61 are connected by a pipe. The two ends of the buffer spring 73 are respectively provided on the fixed part and the sliding part of the telescopic cavity 72.

[0043] The intermediate idler assembly 2 includes an intermediate shaft 21, an intermediate support 22, and an intermediate tire 23. The intermediate shaft 21 is fixedly connected to the idler support 91, the intermediate support 22 is rotatably mounted on the intermediate shaft 21, and the intermediate tire 23 is fixedly connected to the intermediate support 22.

[0044] The intermediate idler assembly 2 also includes a bearing 24, which is located between the intermediate shaft 21 and the intermediate support 22. The bearing 24 is also located between the hollow shaft 11 and the rotating support 12.

[0045] The pressure amplification assembly 8 includes a balance piston 81, a thin fixed cylinder 82, and a thin telescopic cylinder 83. The balance piston 81 is engaged and slidably disposed in the liquid storage cylinder 3. The thin fixed cylinder 82 is fixedly connected to the top of the balance piston 81. The thin telescopic cylinder 83 is engaged and slidably disposed in the thin fixed cylinder 82. The end of the thin telescopic cylinder 83 is fixedly connected to the balance piston 81. The metal liquid supply pipe 31 is disposed between the thin fixed cylinder 82 and the hollow shaft 11.

[0046] The two ends of the balance piston 81 are subjected to the pressure of two liquids respectively, and are in a state of equilibrium under the action of the two. Under the premise that the pressure on both sides is the same, the different areas of force application result in different liquid pressures, thereby achieving the technical purpose of amplifying pressure through the area difference of the piston.

[0047] In practical use, there is no need to set a sandwich between the intermediate support 22 and the intermediate tire 23, and the interior of the intermediate idler roller assembly 2 does not need to be filled with oil. In the initial state, the floating valve core 43 is located at the lower part of the three-way connector 41. At this time, the liquid storage cylinder 3, the square cylinder 51 and the regulating box 61 are all connected through the three-way connector 41, and the liquid inside the variable roller assembly 1 has a certain pressure. The steel cord 131 is similar to the cord layer in a car tire, and has the function of holding the rubber tire 13 in place and preventing it from forming a spindle shape. Under the pulling action of the steel cord 131, the rubber tire 13 will expand when the internal pressure increases, but it will expand synchronously in multiple sections, thereby improving the uniformity of the diameter change process of the rubber tire 13.

[0048] During transportation, the conveyor belt rolls above the variable idler assembly 1 and the intermediate idler assembly 2. The intermediate support 22 rotates relative to the intermediate shaft 21 under the support of the bearing 24. The rotating support 12 rotates relative to the hollow shaft 11 under the support of the bearing 24. The sandwich between the hollow shaft 11, the rotating support 12 and the rubber tire 13 is connected through the hollow shaft 11 and the hollow support 12. The rotating support 12 and the hollow shaft 11 are connected by a pressure-resistant rotary seal 14 to prevent oil leakage.

[0049] If the variable idler assembly 1 does not deviate, the pressure on the variable idler assemblies 1 on both sides should be within a certain range and the difference between the two sides should be small. During this stage: Although the liquid storage cylinder 3, the square cylinder 51 and the regulating box 61 are all connected by a three-way connector 41, since the liquid in the square cylinder 51 does not flow, when the internal liquid pressure of the variable roller assembly 1 fluctuates during the conveying process, the liquid in the liquid storage cylinder 3 will only be exchanged through the regulating box 61 and the telescopic cavity 72. When the telescopic cavity 72 is extended, the buffer spring 73 will also be stretched and accumulate elastic force. The elastic deformation of the buffer spring 73 allows for fluid exchange between the variable idler assembly 1 and the telescopic cavity 72 via the adjustment box 61, thereby absorbing vibrations generated during transportation.

[0050] The regulating box 61 is equipped with a pressure sensor. The pressure sensor on one side can indicate whether the load on that side exceeds the limit. By comparing the values ​​of the pressure sensors on both sides, it can be determined whether the conveyor belt is running off-track. If the conveyor belt is detected to be running off-track: The electric actuator 53 on the load-bearing side of the excessive load extends actively and pushes the square piston 52 to slide in the square cylinder 51, so that the liquid in the square cylinder 51 is transported into the liquid storage cylinder 3 through the three-way connector 41. As the liquid flows upward through the floating valve core 43, it applies an upward thrust to the electric actuator 53. Under the action of this thrust, the floating valve core 43 squeezes the elastic retaining ring 42 and causes the elastic retaining ring 42 to undergo elastic deformation. The floating valve core 43 passes over the elastic retaining ring 42 and reaches the upper part of the three-way connector 41. At this time, the side connector of the three-way connector 41 is closed by the floating valve core 43, and the liquid storage cylinder 3 and the regulating box 61 are isolated. At this time, the liquid storage cylinder 3 and the regulating box 61 cannot exchange liquid, and the oscillation buffer function of the oscillation buffer component 7 is turned off; thereby avoiding the passive extension and retraction of the telescopic cavity 72 from interfering with the active correction of the correction drive component 5.

[0051] After the liquid in the square cylinder 51 enters the variable idler assembly 1, the amount of liquid inside the variable idler assembly 1 will increase, thereby increasing the outer diameter of the rubber tire 13 to a size larger than the normal size. By pushing laterally, the conveyor belt will shift to the other side, achieving the technical effect of correction.

[0052] Because the conveyor belt will not shift to both sides at the same time, the symmetrical correction drive assembly 5 will not be in the correction state at the same time; therefore, the pressure sensor in the adjustment box 61 on the other side can determine whether the correction is completed. After the correction is completed, the drive rod 53 retracts, and the liquid in the reservoir 3 flows back into the square cylinder 51 through the lateral movement and reset of the square piston 52. As the liquid flows downward through the floating valve core 43, it will exert a downward thrust on the floating valve core 43. Under the action of this thrust, the floating valve core 43 passes over the elastic retaining ring 42 and reaches the lower part of the three-way connector 41. At this time, the side connector of the three-way connector 41 opens, and the reservoir 3, the square cylinder 51 and the regulating box 61 are connected to each other again through the three-way connector 41.

[0053] As another embodiment of the present invention: a pressure amplification component 8 can also be provided inside the liquid storage cylinder 3. The two ends of the balance piston 81 are subjected to the pressure of two liquids respectively, and are in a balanced state under the action of the two. Under the premise that the pressure on both sides is the same, the different force-bearing areas result in different liquid pressures, thereby achieving the technical purpose of amplifying pressure through the area difference of the piston.

[0054] Because the rollers in this solution employ a sealed design, they not only prevent internal liquid leakage but also provide waterproofing against external liquids.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A short-shaft structure idler roller with high waterproof and high load capacity, comprising a frame (9) and an intermediate idler roller assembly (2), wherein idler roller supports (91) are arrayed on the frame (9), and the intermediate idler roller assembly (2) is disposed on the idler roller supports (91), characterized in that: Also includes: The variable idler assembly (1), liquid storage tank (3), three-way assembly (4) and correction drive assembly (5) are provided. The variable idler assembly (1) is provided on the idler bracket (91). The variable idler assembly (1) is symmetrically provided on both sides of the intermediate idler assembly (2). The liquid storage tank (3) is provided on the frame (9) and is connected to the variable idler assembly (1). The three-way assembly (4) is provided at the bottom of the liquid storage tank (3) and is connected to the correction drive assembly (5). It also includes a pressure regulating component (6) and an oscillation buffer component (7). The pressure regulating component (6) is mounted on the frame (9), the correction drive component (5) is located in the pressure regulating component (6), and the oscillation buffer component (7) is mounted on the frame (9) and communicates with the pressure regulating component (6). The variable idler assembly (1) includes: A hollow shaft (11) is disposed in the roller bracket (91). A rotating bracket (12) and a rubber tire (13) are provided. The rotating bracket (12) is rotatably mounted on a hollow shaft (11). Both the hollow shaft (11) and the rotating bracket (12) are provided with hollow parts. The rubber tire (13) is mounted on the rotating bracket (12). Rotary seal (14) is disposed between hollow shaft (11) and rotating bracket (12).

2. The short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 1, characterized in that: The top of the liquid storage cylinder (3) is provided with a metal liquid supply pipe (31), the end of which is connected to the hollow shaft (11), and a steel wire curtain (131) is provided between the rubber tire (13) and the rotating support (12).

3. The short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 2, characterized in that: The tee assembly (4) includes: The three-way connector (41) is located below the liquid storage cylinder (3). The elastic retaining ring (42) and the floating valve core (43) are fixed inside the three-way connector (41). The floating valve core (43) is slidably disposed inside the elastic retaining ring (42). When the floating valve core (43) is subjected to the longitudinal thrust of the liquid, it can slide across the elastic retaining ring (42) between two positions. When the floating valve core (43) is in the high position, the side joint of the three-way connector (41) is closed.

4. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 3, characterized in that: The correction drive assembly (5) includes a square cylinder (51), a square piston (52), and an electric actuator (53). The outer shell of the electric actuator (53) is located in the square cylinder (51). The square piston (52) is engaged and slidably located in the square cylinder (51). The telescopic part of the electric actuator (53) is located on the square piston (52). The bottom connector of the three-way connector (41) is connected to the square cylinder (51) through a pipe.

5. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 4, characterized in that: The pressure regulating assembly (6) includes an regulating box (61) and an regulating stud (62). The regulating box (61) is mounted on the frame (9). The regulating stud (62) is adjustablely mounted in the regulating box (61). The square cylinder (51) is mounted in the regulating box (61). The side connector of the tee connector (41) is connected to the regulating box (61) via a pipe.

6. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 5, characterized in that: The frame (9) is provided with a crossbeam (92), and the oscillation buffer assembly (7) includes: A fixing seat (71) is provided on a crossbeam (92). A telescopic cavity (72) is mounted on a fixed base (71), and the telescopic cavity (72) and the adjusting box (61) are connected by a pipe. A buffer spring (73) is provided at both ends on the fixed part and the sliding part of the telescopic cavity (72).

7. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 1, characterized in that: The intermediate idler assembly (2) includes an intermediate shaft (21), an intermediate support (22) and an intermediate tire (23). The intermediate shaft (21) is fixed to the idler support (91), the intermediate support (22) is rotatably mounted on the intermediate shaft (21), and the intermediate tire (23) is fixed to the intermediate support (22).

8. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 7, characterized in that: The intermediate roller assembly (2) also includes a bearing (24), which is located between the intermediate shaft (21) and the intermediate support (22), and is also located between the hollow shaft (11) and the rotating support (12).

9. A short-shaft structure idler roller with high waterproof and high load-bearing capacity according to claim 3, characterized in that: It also includes a pressure amplification component (8), which includes: A balance piston (81) is engaged and slidably disposed in the liquid storage cylinder (3). A thin fixed cylinder (82) and a thin telescopic cylinder (83) are provided. The thin fixed cylinder (82) is fixed to the top of the balance piston (81). The thin telescopic cylinder (83) is engaged and slidably disposed in the thin fixed cylinder (82). The end of the thin telescopic cylinder (83) is fixed to the balance piston (81). The metal liquid supply pipe (31) is disposed between the thin fixed cylinder (82) and the hollow shaft (11).

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