Self-aligning self-adjusting curved roller group

Abstract

The self-aligning and self-adjusting turning idler assembly proposed in this invention includes a support frame, an upper idler assembly, and a lower idler assembly. The upper idler assembly includes an upper idler frame, several idlers, a bottom beam, and an adjustment mechanism. Both ends of the bottom beam are connected to the track support. The adjustment mechanism is connected between the bottom beam and the mounting beam. The bottom beam is a square tube. The adjustment mechanism includes a lower connecting plate, an upper connecting plate, a first bearing assembly, and a second bearing assembly. The lower connecting plate is fixedly connected to the track support, and the upper connecting plate is fixedly installed below the bottom beam. The first and second bearing assemblies are connected between the lower and upper connecting plates. The lower idler assembly includes a lower idler frame and several idlers. The several idlers are installed on the upper idler frame, and the lower idler frame is connected to the intermediate frame. This invention can automatically adjust the center of gravity according to the change in belt tension during the turning process, ensuring that the center of gravity is always aligned, thus meeting the normal operation requirements of the belt conveyor during small turns.

Description

Technical Field

[0001] This invention relates to the field of bulk material conveying technology in coal mines, and more particularly to self-aligning and self-adjusting turning idler sets. Background Technology

[0002] Existing technologies for achieving conveyor belt bends include: 1) Appropriately reducing the support angle of the idler rollers to reduce the outward thrust provided by the idlers to the belt, causing the belt to gradually move inward. 2) Increasing the trough angle can help the belt automatically adjust its centering, reducing the degree of deviation. Therefore, increasing the trough angle not only helps to reduce the radius of curvature. 3) A common emergency measure is to install side vertical rollers, which can limit the belt's deviation inward and outward on curved sections.

[0003] Existing solutions for adjusting conveyor belt misalignment at bends primarily rely on stop rollers at both ends of the idler frame to forcibly block the conveyor belt. This causes significant damage to the conveyor belt and places high demands on the strength of the idler frame and stop rollers. During operation, the conveyor belt is affected by factors such as conveying volume, tension, ambient temperature, and belt material. The bending machine cannot actively adapt to these conditions, leading to problems like belt misalignment and buckling. Furthermore, issues such as jamming and insufficient adjustment can occur during the adjustment process. During bends, changes in belt tension and shifts in the conveyor's center of gravity due to the bend cause belt misalignment, buckling, and even belt cutting by the supporting idler frame. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-aligning and self-adjusting cornering idler roller assembly.

[0005] This invention adopts the following technical solution: a self-centering and self-adjusting turning idler assembly, comprising a support frame, an upper idler assembly, and a lower idler assembly. The support frame includes legs, an intermediate frame, and a track support. The legs are supported on the ground, and the track support is used to install the upper and lower idler assemblies. The intermediate frame connects the track support and the legs. The upper idler assembly includes an upper idler frame, several idlers, a bottom beam, and an adjustment mechanism. Several idlers are arranged on the upper idler frame, and the bottom of the upper idler frame is a bottom beam. Both ends of the bottom beam are connected to the track support. The adjustment mechanism is connected between the bottom beam and the mounting beam. The bottom beam is a square tube. The adjustment mechanism includes a lower connecting plate, an upper connecting plate, a first bearing assembly, and a second bearing assembly. The lower connecting plate is fixedly connected to the track support, and the upper connecting plate is fixedly arranged below the bottom beam. The first and second bearing assemblies are connected to the lower connecting plate and the upper connecting plate. Between the connecting plates, the first bearing assembly includes a first connecting bracket, a vertical bearing, and a first support beam. The first connecting bracket is a square tube and is fixedly connected to the upper connecting plate. The vertical bearing is disposed inside the first connecting bracket. The first support beam is fixedly connected to the vertical bearing and the lower connecting plate, so that the first connecting bracket and the first support beam can move relative to each other. The second bearing assembly includes a second connecting bracket, a horizontal bearing, and a second support beam. The second connecting bracket is a square tube and is fixedly connected to the upper connecting plate. The horizontal bearing is disposed inside the second connecting bracket. The second support beam is fixedly connected to the vertical bearing and the lower connecting plate, so that the second connecting bracket and the second support beam can move relative to each other. The lower idler roller assembly includes a lower idler roller frame and several idler rollers. The several idler rollers are disposed on the upper idler roller frame, and the lower idler roller frame is connected to the intermediate frame.

[0006] Preferably, the bottom beam is located at one end of the upper connecting plate near the first bearing assembly, and the right end of the upper connecting plate is connected to the second connecting bracket via a vertical bushing, so that the upper connecting plate and the second connecting bracket can be relatively displaced along the vertical axis.

[0007] Preferably, the vertical bushing includes an upper sleeve and a lower sleeve, which together form a tapered sleeve, with the upper sleeve inserted into the lower sleeve.

[0008] Preferably, the upper idler roller assembly further includes an upper spring connected between the upper idler roller frame and the track support, and the lower idler roller assembly further includes a lower spring connected between the lower idler roller frame and the track support.

[0009] Preferably, a stop roller and a pressure roller are also installed on the upper roller frame.

[0010] Preferably, there are four idlers, which are respectively arranged on the front and rear sides of the upper idler frame to carry the conveyor belt.

[0011] Preferably, a convenient connector is also provided between the track support and the intermediate frame to enable a movable, detachable, and portable connection between the track support and the intermediate frame. The convenient connector includes a U-shaped overlap, a bent bolt, a nut, and a reinforcing bar shaft. The reinforcing bar shaft is fixed to the top of the intermediate frame. One end of the U-shaped overlap is attached to the reinforcing bar shaft, and the other end is fixedly connected to the track support. A screw hole for the bent bolt to pass through is also provided on the U-shaped overlap. A hole for the reinforcing bar shaft to pass through is formed between the U-shaped overlap and the bent bolt. The nut is screwed onto both ends of the bent bolt to enable a movable, detachable, and portable connection between the track support and the intermediate frame.

[0012] The mechanism proposed in this invention has the following advantages: by adopting the first bearing group, the center of gravity can be automatically adjusted according to the change in belt tension during the turning process, so that the center of gravity is always centered, which meets the normal operation of the belt conveyor during small turns. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the self-centering and self-adjusting turning idler roller group proposed in this invention.

[0014] Figure 2 for Figure 1 The left view.

[0015] Figure 3 for Figure 1 Sectional view of point B in the middle.

[0016] Figure 4 for Figure 1 Cross-sectional view along AA.

[0017] Figure 5 for Figure 4 A schematic diagram of another embodiment.

[0018] Figure 6 for Figure 5 A magnified view of point C in the middle.

[0019] In the diagram: support frame 10, support leg 11, intermediate frame 12, track support 13, upper roller assembly 20, upper roller frame 21, roller 22, bottom beam 23, adjusting mechanism 24, lower connecting plate 240, upper connecting plate 241, vertical bushing 2411, upper clamping sleeve 2412, lower clamping sleeve 2413, first bearing assembly 242, first connecting seat 2421, vertical bearing 2422, first support beam 2423, second bearing assembly 243, second connecting seat 2431, horizontal bearing 2432, second support beam 2433, upper spring 25, stop roller 26, pressure roller 27, lower roller assembly 30, lower roller frame 31, lower spring 32, convenient connector 40, U-shaped overlap 41, bent bolt 42, nut 43, steel bar shaft 44. Detailed Implementation

[0020] 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.

[0021] See Figure 1-4 A self-centering and self-adjusting turning idler assembly includes a support frame 10, an upper idler assembly 20, and a lower idler assembly 30. The support frame 10 includes legs 11, an intermediate frame 12, and a track support 13. The legs 11 are supported on the ground, and the track support 13 is used to install the upper idler assembly 20 and the lower idler assembly 30. The intermediate frame 12 connects the track support 13 and the legs 11. The upper idler assembly 20 includes an upper idler frame 21, several idlers 22, a bottom beam 23, and an adjustment mechanism 24. The several idlers are arranged on the upper idler frame 21, and the bottom of the upper idler frame 21 is the bottom beam 23. The bottom beam 23 is connected to the track support 13 at both ends. The adjustment mechanism 24 is connected between the bottom beam 23 and the mounting beam. The bottom beam 23 is a square tube. The adjustment mechanism 24 includes a lower connecting plate 240, an upper connecting plate 241, a first bearing assembly 242, and a second bearing assembly 243. The lower connecting plate 240 is fixedly connected to the track support 13. The upper connecting plate 241 is fixedly disposed below the bottom beam 23. The first bearing assembly 242 and the second bearing assembly 243 are connected between the lower connecting plate 240 and the upper connecting plate 241. The first bearing assembly 242 includes a first bearing... The system comprises a connecting bracket 2421, a vertical bearing 2422, and a first support beam 2423. The first connecting bracket 2421 is a square tube and is fixedly connected to the upper connecting plate 241. The vertical bearing 2422 is disposed inside the first connecting bracket 2421. The first support beam 2423 is fixedly connected to the vertical bearing 2422 and the lower connecting plate 240, so that the first connecting bracket 2421 and the first support beam 2423 can move relative to each other. The second bearing assembly 243 includes a second connecting bracket 2431, a horizontal bearing 2432, and a first support beam 2423. The second support beam 2433, the second connecting bracket 2431 is a square tube and is fixedly connected to the upper connecting plate 241, the horizontal bearing 2432 is set inside the second connecting bracket 2431, and the second support beam 2433 is fixedly connected to the vertical bearing 2422 and the lower connecting plate 240, so that the second connecting bracket 2431 and the second support beam 2433 can move relative to each other; the lower roller group 30 includes a lower roller frame 31 and a plurality of rollers, the plurality of rollers are set on the upper roller frame 21, and the lower roller frame 31 is connected to the intermediate frame 12.

[0022] In this scheme, the relative movable connection between the first connecting bracket 2421 and the first support beam 2423 is due to the vertical bearing 2422 being a self-moving component. Above: because the tape is laid on the idler roller, the idler roller is integrated with the upper idler roller frame 21, the idler roller frame is connected to the bottom beam 23, the bottom beam 23 is connected to the upper connecting plate 241, and the upper connecting plate 241 is connected to the first connecting bracket 2421. Below: the first support beam 2423 is connected to the lower connecting plate 240, and then to the track bracket 13. This enables the idler roller frame and the support frame 10 to move relative to each other along the vertical bearing 2422, achieving self-centering and self-adjustment to find the center.

[0023] The bottom beam 23 is a square tube with a vertical bearing 2422 installed inside. There can be one or more vertical bearings 2422. The vertical bearings 2422 are installed between the bottom beam 23 and the first support beam 2423 below. The installation of the vertical bearings 2422 allows the bottom beam 23 to move relative to the first support beam 2423 along the vertical bearings 2422, that is, to move along the width of the conveyor belt. When the tunnel turns to the left, the conveyor belt also turns to the left, causing the bottom beam 23 to move to the left along the vertical bearings 2422, relieving the bending of the left edge of the conveyor belt and releasing the stress on the left edge of the conveyor belt. In addition, the installation of the vertical bearings 2422 allows the square tube to adaptively move to the left under the driving force of the potential energy of the conveyor belt moving to the left, thereby automatically adjusting the center.

[0024] Since the vertical bearing 2422 can only withstand the in-plane force composed of radial forces F1 and F3, and cannot withstand the axial force F2 (i.e., the force in the horizontal direction), when the conveyor belt bends, the axial force F2 will inevitably be generated. If the vertical bearing 2422 is subjected to the axial force F2, the bearing is easily damaged, which in turn damages and bends the first support beam 2423 connected below, leading to serious consequences such as the square tube tipping over and the conveyor belt bending. Therefore, a horizontal bearing 2432 is provided. The axial direction of the horizontal bearing 2432 is perpendicular to the axial direction of the vertical bearing 2422. The horizontal bearing 2432 can withstand the force F2. When the conveyor belt generates a force in the F2 direction, this force will be distributed and canceled by the horizontal bearing 2432, thereby preventing the force from being transmitted to the vertical bearing 2422 and causing its damage. Similarly, the horizontal bearing 2432 cannot withstand the force in the F1 direction either. The two complement each other, compensate for each other, and protect each other, forming an integral structure.

[0025] See Figure 5 Preferably, the bottom beam 23 is disposed at one end of the upper connecting plate 241 near the first bearing assembly 242, and the right end of the upper connecting plate 241 is connected to the second connecting bracket 2431 through a vertical bushing 2411, so that the upper connecting plate 241 and the second connecting bracket 2431 are relatively displaced along the vertical axis.

[0026] In a preferred embodiment, the bottom beam 23 is positioned near the left side, approximately above the first bearing assembly 242. The vertical bearing 2422 bears the weight above, while the horizontal bearing 2432 cannot bear the weight above. Therefore, the bottom beam 23, positioned near the left side, transfers the weight above as much as possible to the vertical bearing 2422. The vertical bushing 2411 allows the upper connecting plate 241 and the second connecting bracket 2431 to be movably connected in the vertical direction. At the same time, the vertical bushing 2411 can transfer F2 to the second connecting bracket 2431. Thus, the vertical force F1 is borne by the vertical bearing 2422, and the lateral force F2 is borne by the horizontal bearing 2432. The two forces share the load and protect each other.

[0027] See Figure 6 Preferably, the vertical bushing 2411 includes an upper sleeve 2412 and a lower sleeve 2413, the upper sleeve 2412 and the lower sleeve 2413 being conical sleeves, with the upper sleeve inserted into the lower sleeve 2413.

[0028] Preferably, the upper roller assembly 20 further includes an upper spring 25 connected between the upper roller frame 21 and the track support 13, and the lower roller assembly 30 further includes a lower spring 32 connected between the lower roller frame 31 and the track support 13.

[0029] Preferably, a stop roller 26 and a pressure roller 27 are also provided on the upper roller frame 21.

[0030] Preferably, there are four idlers, which are respectively arranged on the front and rear sides of the upper idler frame 21 to carry the tape.

[0031] Preferably, a convenient connector 40 is also provided between the track support 13 and the intermediate frame 12 to enable a movable, detachable, and portable connection between the track support 13 and the intermediate frame 12. The convenient connector 40 includes a U-shaped overlap 41, a bent bolt 42, a nut 43, and a reinforcing bar shaft 44. The reinforcing bar shaft 44 is fixed to the top of the intermediate support. One end of the U-shaped overlap 41 overlaps the reinforcing bar shaft 44, and the other end is fixedly connected to the track support 13. A screw hole for the bent bolt 42 to pass through is also provided on the U-shaped overlap 41. A hole for the reinforcing bar shaft 44 to pass through is formed between the U-shaped overlap 41 and the bent bolt 42. The nut 43 is screwed onto both ends of the bent bolt 42 to enable a movable, detachable, and portable connection between the track support 13 and the intermediate frame 12.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-aligning self-adjusting curved roller set, characterized in that, The system includes a support frame, an upper idler roller assembly, and a lower idler roller assembly. The support frame includes legs, an intermediate frame, and a track support. The legs support the system on the ground. The track support is used to install the upper and lower idler roller assemblies. The intermediate frame connects the track support and the legs. The upper idler roller assembly includes an upper idler roller frame, several idler rollers, a bottom beam, and an adjustment mechanism. The several idler rollers are mounted on the upper idler roller frame. The bottom of the upper idler roller frame is a bottom beam, and both ends of the bottom beam are connected to the track support. The adjustment mechanism connects the bottom beam and the mounting beam. The bottom beam is a square tube. The adjustment mechanism includes a lower connecting plate, an upper connecting plate, a first bearing assembly, and a second bearing assembly. The lower connecting plate is fixedly connected to the track support. The upper connecting plate is fixedly located below the bottom beam. The first bearing assembly and the second bearing assembly connect the lower connecting plate and the upper connecting plate. The first bearing assembly includes... The first connecting bracket includes a square tube and is fixedly connected to the upper connecting plate. The vertical bearing is located inside the first connecting bracket, and the first support beam is fixedly connected to the vertical bearing and the lower connecting plate, so that the first connecting bracket and the first support beam can move relative to each other. The second bearing assembly includes a second connecting bracket, a horizontal bearing, and a second support beam. The second connecting bracket is a square tube and is fixedly connected to the upper connecting plate. The horizontal bearing is located inside the second connecting bracket, and the second support beam is fixedly connected to the vertical bearing and the lower connecting plate, so that the second connecting bracket and the second support beam can move relative to each other. The lower roller assembly includes a lower roller frame and several rollers. The rollers are located on the upper roller frame, and the lower roller frame is connected to the intermediate frame.

2. The self-aligning, self-adjusting idler bend assembly of claim 1 wherein, The bottom beam is located at one end of the upper connecting plate near the first bearing assembly. The right end of the upper connecting plate is connected to the second connecting bracket via a vertical bushing, so that the upper connecting plate and the second connecting bracket can be relatively displaced along the vertical axis.

3. The self-aligning, self-adjusting curve roll assembly of claim 1 wherein, The vertical bushing includes an upper sleeve and a lower sleeve, which together form a tapered sleeve, with the upper sleeve inserted into the lower sleeve.

4. The self-aligning and self-adjusting cornering idler roller assembly as described in claim 1, characterized in that, The upper idler roller assembly also includes an upper spring connected between the upper idler roller frame and the track support, and the lower idler roller assembly also includes a lower spring connected between the lower idler roller frame and the track support.

5. The self-aligning and self-adjusting cornering idler roller assembly as described in claim 1, characterized in that, Also, stop rollers and pressure rollers are installed on the upper idler frame.

6. The self-aligning and self-adjusting cornering idler roller assembly as described in claim 1, characterized in that, The plurality of idlers consists of four rollers, which are respectively arranged on the front and rear sides of the upper idler frame to carry the conveyor belt.

7. The self-aligning and self-adjusting cornering idler roller assembly as described in claim 1, characterized in that, A convenient connector is also provided between the track support and the intermediate frame to enable a movable, detachable, and portable connection between the track support and the intermediate frame. The convenient connector includes a U-shaped overlap, a bent bolt, a nut, and a steel bar shaft. The steel bar shaft is fixed to the top of the intermediate frame. One end of the U-shaped overlap is attached to the steel bar shaft, and the other end is fixedly connected to the track support. A screw hole for the bent bolt to pass through is also provided on the U-shaped overlap. A hole for the steel bar shaft to pass through is formed between the U-shaped overlap and the bent bolt. The nut is screwed onto both ends of the bent bolt to enable a movable, detachable, and portable connection between the track support and the intermediate frame.

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