Hanging type hinged impact idler set for bearing blanking

Abstract

The invention provides a hanging type hinged buffering carrier roller set for bearing blanking. The hanging type hinged buffering carrier roller set comprises a plurality of carrier roller sets, hanging supports, hanging springs, adjusting screw rods, anti-deviation blocking rollers, jackscrew bolts, elastic buffering sleeves, an upper bottom plate, a lower bottom plate and a conveying belt. The carrier roller sets are formed by connecting a plurality of independent buffer carrier rollers end to end in series, the buffer carrier rollers are hinged through elastic hinge plates, and the buffer carrier rollers are sleeved with buffer rings. The two ends of the carrier roller set are each provided with one end of a set of hanging springs, the other ends of the hanging springs are connected with one end of an adjusting screw rod, the adjusting screw rod is installed on a hanging support, and the lower end of the hanging support is connected with an elastic buffering sleeve. The whole material receiving part has the combined four-stage buffering effect of the hanging bomb, the rubber buffering ring, the elastic hinge plate and the elastic buffering sleeve, the huge impact force of material falling is effectively eliminated, and the problem that the buffering carrier roller set is prone to being damaged due to the impact force is solved.

Description

Technical Field

[0001] This invention relates to the field of intelligent suspended bulk material conveying technology, and in particular to a suspended hinged buffer roller assembly for bearing falling materials. Background Technology

[0002] Idler rollers are the main load-bearing components of belt conveyors. Over the past decade or so, with the growth in coal demand, investment and construction in large open-pit mines have been continuously expanding, including renovation and expansion projects. As a result, the transport capacity of belt conveyors for bulk material transportation in open-pit mines is significantly greater than that in underground mines. Traditionally... The receiving section of belt conveyors relies on buffer idlers for material handling, as seen in models like the DT75, DTII, and DTIIA, as well as all belt conveyors manufactured in the last century. At the beginning of this century, receiving devices combining buffer beds and buffer idlers emerged, initially solving the problems of short lifespan and frequent replacements associated with pure buffer idler receiving devices. However, this led to issues such as the buffer beds being prone to wear and even adhesion between the buffer beds and the belt. The maximum conveying capacity of belt conveyors in underground mines and surface loading systems is no more than 8,000 tons / hour, while the conveying capacity of large open-pit mine belt conveyors can reach over 20,000 tons / hour, with belt speeds exceeding 6.3 m / s. Without a highly reliable receiving device, this problem would become even more pronounced.

[0003] The problem to be solved by this invention is to improve the service life of the buffer device at the receiving point of the open-pit mine belt conveyor under conditions of large conveying capacity, high belt speed, and strong impact of large materials, and to improve the economic efficiency of the open-pit mine belt conveyor. At the same time, the buffer idler group has the functions of adjusting deviation and quickly replacing idlers. Summary of the Invention

[0004] In view of the above-mentioned defects, the present invention proposes a hanging hinged buffer roller group for bearing falling material.

[0005] A suspended hinged buffer roller assembly for bearing falling materials is characterized by comprising: several roller assemblies, a suspension bracket, suspension springs, an adjusting screw, anti-deviation guide rollers, set screws, elastic buffer sleeves, an upper base plate, a lower base plate, and a conveyor belt; the several roller assemblies are formed by several individual buffer rollers connected end to end in series, and the buffer rollers are hinged together by elastic hinge plates. Buffer rings are fitted on the buffer rollers. The conveyor belt is laid on top of the multiple arranged roller assemblies, and the conveyor belt rolls in cooperation with the buffer rollers; a set of suspension springs is installed at each end of the roller assemblies, and the other end of the suspension springs is connected to one end of the adjusting screw. The adjusting screw is installed on the suspension bracket, and the lower end of the suspension bracket is connected to the elastic buffer sleeve, the lower end of the elastic buffer sleeve being installed between the upper base plate and the lower base plate.

[0006] In this solution, the entire receiving section forms a four-level buffer effect consisting of "hanging spring 3 - rubber buffer ring 111 - elastic hinge plate 12 - elastic buffer sleeve 7", which effectively eliminates the huge impact force of falling materials and alleviates the problem of easy damage to the buffer roller group due to impact force. Attached Figure Description

[0007] Figure 1 This is a front view schematic diagram of a suspended hinged buffer roller assembly.

[0008] Figure 2 This is a diagram showing the left view.

[0009] Figure 3 This is a top-down view.

[0010] Figure 4 for Figure 1 Schematic diagram of cross section AA.

[0011] Figure 5 This is a schematic diagram showing two adjacent single rollers connected by an elastic hinge plate 12.

[0012] Figure 6 for Figure 5 A schematic diagram of the flexible hinge plate 12 before and after deformation.

[0013] Figure 7 This is a schematic diagram of a suspended hinged buffer roller assembly during normal material receiving. This state represents the initial state, where the material falls vertically without any deviation. The arrows in the diagram indicate the direction of material descent.

[0014] Figure 8 This diagram illustrates the material's falling direction shifting to the left. It shows the material tilting to the left as it falls, and the material shifting to the left.

[0015] Figure 9 This is a schematic diagram of an embodiment using a cushioning airbag 42.

[0016] Figure 10 This is a partial structural diagram of the area below the hanging bracket on the left.

[0017] Figure 11 for Figure 10 A schematic diagram showing the inflating of the elastic airbag on the left side, raising the left suspension bracket.

[0018] Figure 12 for Figure 11 Another embodiment of the diagram is shown.

[0019] Figure 13 CN201620515349.3 describes a composite buffer type suspended roller assembly.

[0020] Figure 14CN202420466341.7 describes a composite buffer type suspended idler group.

[0021] Figure 15 The attached figure is for the trough-type buffer four idler roller in the prior art CN201220118477.6.

[0022] In the diagram: 1. Idler roller assembly; 11. Buffer roller; 111. Rubber buffer ring; 12. Elastic hinge plate; 2. Hanging bracket; 21. First through hole; 3. Hanging spring; 4. Adjusting screw; 41. Elastic fixing sleeve; 5. Anti-deviation guide roller; 51. "Z" shaped support frame; 52. "T" shaped anti-deviation roller; 6. Set screw; 61. Anti-loosening nut; 7. Elastic buffer sleeve; 72. Buffer airbag; 81. Upper base plate; 82. Lower base plate; 83. Shooting device; 9. Conveyor belt. Detailed Implementation

[0023] See Figure 1-12 This invention proposes a suspended hinged buffer roller assembly for bearing falling materials, comprising several roller assemblies 1, a hanging bracket 2, a hanging spring 3, an adjusting screw 4, an anti-deviation stop roller 5, a set screw 6, an elastic buffer sleeve 7, an upper base plate 81, a lower base plate 82, and a tape 9; the several roller assemblies 1 are formed by several individual buffer rollers 11 connected end to end in series, with the side rollers being longer and the middle rollers being shorter. The buffer rollers 11 are hinged together by elastic hinge plates 12 and fixed by pin bolts. A trapezoidal polyurethane polymer rubber buffer ring 111 is fitted on each buffer roller 11. The tape 9 is laid on the upper part of the multiple arranged roller assemblies 1, and the tape 9 is connected to the buffer... The idler rollers 11 are in rolling engagement; each end of the idler roller group 1 is equipped with a set of hanging springs 3, and the other end of the hanging springs 3 is connected to one end of the adjusting screw 4. The adjusting screw 4 is installed on the hanging bracket 2, and the lower end of the hanging bracket 2 is connected to the elastic buffer sleeve 7. The lower end of the elastic buffer sleeve 7 is installed between the upper base plate 81 and the lower base plate 82. The elastic buffer sleeve 7 is a cylindrical polyurethane polymer rubber sleeve with a high-strength metal helical spring embedded inside. A third through hole is opened on its axis, and the screw in the bolt assembly passes through the third through hole so that the elastic buffer sleeve 7 is installed on the screw. The body of the high-strength metal helical spring is a conical helix, and the metal spring body is embedded in the cylindrical polymer rubber sleeve. A concave groove is opened on the bottom surface of the base plate, and the bolt head is embedded in it to keep the base plate surface flat.

[0024] See Figure 3 The buffer roller 11 in the roller group 1 is fitted with a trapezoidal polyurethane polymer rubber buffer ring 111. The trapezoidal polyurethane polymer buffer ring is the first-level buffer set on the hanging hinged buffer roller group.

[0025] See Figure 5 , 6In the idler roller group 1, the buffer idlers 11 are connected by elastic hinge plates 12. When the impact load is large, the elastic hinge plates 12 undergo elastic deformation, and return to their original position when the load decreases. The elastic hinge plates 12 are the second-stage buffer installed on the suspended hinged buffer idler roller group 1. Figure 5 , 6 As shown, in the original position (undeformed), the distance between two adjacent single rollers is L. After deformation under force, the distance between two adjacent single rollers is L1, where L1 > L. This distance difference is the release distance during the arc deformation of the elastic hinge plate 12. This distance varies depending on the material, typically ranging from 1mm to 3mm.

[0026] The idler roller assembly 1 and the hanging bracket 2 are connected in series by the hanging spring 3. When the impact load is large, the hanging spring 3 will undergo elastic deformation and return to its original position when the load decreases. The hanging spring 3 is the third-level buffer set on the hanging hinged buffer idler roller assembly 1.

[0027] Elastic buffer sleeves 7 are installed between the steel plates and the base plate at the bottom support of both ends of the hanging bracket 2. When the impact load is large, the elastic buffer sleeves 7 will undergo elastic deformation and return to their original position when the load decreases. The elastic buffer sleeves 7 are the fourth level of buffer installed on the hanging hinged buffer roller group 1.

[0028] In this solution, the entire receiving section forms a four-level buffering effect consisting of "hanging spring 3 - rubber buffer ring - elastic hinge plate 12 - elastic buffer sleeve 7", which effectively eliminates the huge impact force of falling materials and alleviates the problem of easy damage to the buffer roller group 1 due to impact force.

[0029] like Figure 15 The four idler rollers with trough-type buffer shown in patent CN201220118477.6 are typical fixed idler roller groups, which have basically no buffering function. They can only be used for conventional material conveying and cannot be used for material transfer or falling from one device to another. This is because each idler roller is fixedly connected to the external frame and is a rigid connection without elastic buffering function. Consequently, the tape laid on top of it also has no buffering function.

[0030] like Figure 14 The suspended idler assembly shown in patent CN202420466341.7 is no longer a suspended idler because the idler in the middle position is connected to the external support by "17, fixed block; 18, support rod; 19, movable rod; 20, collar; 21, second buffer spring". When the material falls in a direction other than vertically downward, the middle idler can no longer move adaptively to the left or right.

[0031] like Figure 13CN201620515349.3 describes a composite buffer type suspended idler assembly. This patent describes an idler assembly similar to that of the present invention, both being suspended idlers. When subjected to inclined material falling (not vertically downwards), although the third connecting plate 22 allows the middle idler to shift to one side to adapt to the center position of the material, the third connecting plate is only hinged. It can only achieve the function of moving TG left 1 or TG right 1 to one side through angle changes. The third connecting plate 22 itself has no elastic deformation function, meaning the relative distance between adjacent idlers remains unchanged. It only serves to adapt the angle of idlers 6, 7, 8, and 9 to the direction of material fall, without providing a buffering effect. Therefore, there is no elastic buffering effect within the idler assembly 1, i.e., between adjacent idlers.

[0032] The suspended buffer roller group 1 used in this invention achieves the above-mentioned four-level buffering. Several individual rollers in the roller group 1 are connected by deformable elastic hinge plates 12, which have good flexibility, flexible connection between each other, and large degree of freedom. As the material drop point changes, the lowest individual roller can be automatically adjusted according to the material drop direction and center of gravity, automatically forming a trough that can hold the most material, so as to catch all the material and avoid spilling to one side.

[0033] For example, during normal material feeding, the material falls vertically downwards and lands precisely in the middle of roller group 1. The lowest point of the conveyor belt trough is located exactly in the TG, that is, at the middle and lowest roller, with the material evenly distributed on both sides. Figure 7 It will not spill. However, when the material falls in a different direction, such as to the left (e.g., ...), it will not spill. Figure 8 , 9 If the material's center of gravity shifts to the left and falls to TG left 1, then TG middle and TG left 1 are connected by the elastic hinge plate 12. TG left 1 will naturally become the point where the material's center of gravity is stressed, and thus become the lowest point. At this time, the entire idler roller group 1 automatically forms a trough with the TG left 1 idler roller as the lowest point, realizing automatic troughing. Although the material shifts to the left, after automatic troughing, the trough shape that receives and accommodates the material adaptively changes its shape. The trough shape after the change of shape ( Figure 8 ) and the original groove type ( Figure 7 The capacity of the tape remains unchanged, and it can still catch the material, preventing the material from spilling out to the left.

[0034] Furthermore, the hanging bracket 2 has two sets of symmetrical threaded holes at the side ears of the brackets at both ends. The center of the threaded holes is aligned with the axis of the adjusting screw 4. The set screw 6 is screwed into the threaded holes from the outside of the side ears, with its end abutting against both sides of the adjusting screw 4. The set screw 6 is equipped with a lock nut 61. The hanging bracket 2 has a set of anti-deviation rollers 5 symmetrically arranged on each side. The anti-deviation rollers 5 are supported by a "Z"-shaped support frame 51, and a "T"-shaped anti-deviation roller 52 is installed at the end. The hanging bracket 2 has a first through hole 21 on each side. The direction of the through hole is perpendicular to the axis of the roller group 1. The other ends of the two adjusting screws 4 pass through the first through hole 21 on each side of the hanging bracket 2. The anti-deviation rollers 5 are arranged on both sides. When the belt 9 deviates and does not contact the anti-deviation rollers 5, the two opposing set screws 6 are adjusted. One set screw 6 pushes the adjusting screw 4 into the first through hole 21 to tilt to one side, forming an angle of, for example, 5°. This causes one side of the idler roller group 1 to tilt forward, providing a long-term fine-tuning effect on the belt 9. This can prevent the belt 9 from deviating and scratching or spilling coal. The anti-deviation rollers can rotate freely with the help of external force. The rotation direction is perpendicular to the rotation direction of the idler roller group 1, and the installation position is higher than the uppermost idler roller on the side of the idler roller group 1.

[0035] Furthermore, the system includes several idler roller groups 1, hanging brackets 2, hanging springs 3, adjusting screws 4, anti-deviation guide rollers 5, set screws 6, upper base plate 81, lower base plate 82, and tape 9. Each idler roller group 1 is formed by connecting several individual buffer idler rollers 11 end-to-end in series. The buffer idler rollers 11 are hinged together by elastic hinge plates 12. Buffer rings are fitted onto each buffer idler roller 11. The tape 9 is laid on the upper part of the multiple arranged idler roller groups 1, and the tape 9 rolls in contact with the buffer idler rollers 11. A set of hanging springs 3 is installed at each end of each idler roller group 1, and the other end of the hanging springs 3 is connected to the adjusting screws 4. At one end, the adjusting screw 4 is installed on the hanging bracket 2. The lower end of the hanging bracket 2 is connected to the upper base plate 81. The lower base plate 82 is located below the upper base plate 81. A buffer airbag 72 is also set between the lower base plate 82 and the upper base plate 81. A screw for supporting and fiber-supporting the upper base plate 81 passes through a third through hole between the lower base plate 82 and the upper base plate 81. The system also includes a control module consisting of a shooting device 83, an encoder, and a controller. The shooting device is positioned diagonally above the conveyor belt to capture the shape of the material falling onto the conveyor belt in real time. The shooting device is connected to the controller via the encoder, and the controller controls the inflation and deflation of the airbag 72. This solution replaces the elastic buffer sleeve 7 with a buffer airbag 72 and incorporates automatic detection, automatic transmission, and automatic control functions for the shooting device, encoder, and controller.

[0036] As mentioned above, the conventional "Z"-shaped support frame 51 supports the belt, and the "T"-shaped anti-deviation roller 52 installed at the end can play a role in correcting deviation. However, when deviation occurs, the "T"-shaped anti-deviation roller 52 needs to contact the edge of the belt and push the belt with the reaction force to move it in the opposite direction and restore its original center of gravity position. After repeated occurrences, the edge of the belt will be worn by the "T"-shaped anti-deviation roller 52, forming burrs or curled edges, which can easily be caught or jammed by the individual idler rollers on the edge.

[0037] In this solution, when the material shifts to the left, the shape of the material accumulation also forms an image of leftward shift. At this point, the high-definition camera quickly captures the image and sends this information, indicating the material is shifted to the left, to the controller via the encoder. The controller then inflates the elastic airbag below the left-side hanging bracket 2, increasing its height. This raises the height of the left-side hanging bracket 2, which in turn raises the idler roller group 1 and the left half of the conveyor belt, causing the material that has shifted to the left on the conveyor belt to tilt to the right and slide down, thus correcting the deviation. Once the image of the material captured by the high-definition camera is located at the center of the conveyor belt, the encoder generates a message indicating a return to the original position and sends it to the controller. The controller then releases some gas from the left-side elastic airbag, restoring the material to its original position and maintaining the same height and balance between the left and right hanging brackets 2. This solution's correction structure design and function replace the original "T"-shaped anti-deviation roller 52, offering not only a fast correction response but also preventing damage to the conveyor belt by raising it.

[0038] In order to achieve the purpose of increasing height by deforming the airbag vertically when inflated, the side of the airbag is wavy.

[0039] Furthermore, the hanging springs 3 at both ends of the roller group 1 are each hinged to the U-shaped groove at one end of the adjusting screw 4 and fixed with pin bolts. At the U-shaped groove hinge end where the hanging spring 3 connects to the adjusting screw 4, two sets of elastic fixing sleeves 41 are provided on the fixing pin bolts, which are nested on both sides of the hanging spring 3.

[0040] The idler roller group 1 consists of nine individual buffer idler rollers 11 connected end to end. The idler rollers on both sides are long and the idler roller in the middle is short. The long idler rollers on both sides can prevent the edges of the conveyor belt 9 from getting caught in the idler roller connection, and the short idler roller in the middle can help increase the impact resistance of the material.

[0041] The embodiments of this solution have been described in detail above. However, this solution is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A suspended hinged buffer roller assembly for bearing falling materials, characterized in that: The system includes several idler roller sets, hanging brackets, hanging springs, adjusting screws, anti-deviation guide rollers, set screws, elastic buffer sleeves, an upper base plate, a lower base plate, and a conveyor belt. Each idler roller set is composed of several individual buffer idlers connected end-to-end in series. The buffer idlers are hinged together by elastic hinge plates. Buffer rings are fitted onto each buffer idler roller. The conveyor belt is laid on top of the multiple arranged idler roller sets, and the conveyor belt rolls in conjunction with the buffer idlers. A set of hanging springs is installed at each end of each idler roller set. The other end of each hanging spring is connected to one end of an adjusting screw, which is mounted on the hanging bracket. The lower end of the hanging bracket is connected to the elastic buffer sleeve, which is installed between the upper and lower base plates.

2. The suspended hinged buffer roller assembly for bearing falling material as described in claim 1, characterized in that: The hanging bracket has two sets of symmetrical threaded holes at the side ears of the brackets at both ends. The center of the threaded holes is aligned with the axis of the adjusting screw. The set screw is screwed in through the threaded holes from the outside of the side ear plates, and the end abuts against both sides of the adjusting screw. The set screw is equipped with a lock nut. The hanging bracket has a set of anti-deviation rollers symmetrically arranged on each side. The anti-deviation rollers are supported by a "Z"-shaped support frame, and a "T"-shaped anti-deviation roller is installed at the end.

3. The suspended hinged buffer roller assembly for bearing falling material as described in claim 1, characterized in that: The system includes several idler roller sets, hanging brackets, hanging springs, adjusting screws, anti-deviation guide rollers, set screws, upper base plates, lower base plates, and a conveyor belt. Each idler roller set is composed of several individual buffer idlers connected end-to-end in series. The buffer idlers are hinged together by elastic hinge plates, and buffer rings are fitted onto each buffer idler. The conveyor belt is laid on top of the multiple idler roller sets, and the conveyor belt rolls in contact with the buffer idlers. A set of hanging springs is installed at each end of each idler roller set, and the other end of the hanging springs is connected to the adjusting screw. One end of the rod has an adjusting screw installed on a hanging bracket. The lower end of the hanging bracket is connected to the upper base plate, which is located below the upper base plate. A buffer airbag is also installed between the lower and upper base plates. A screw for supporting and fiberizing the upper base plate passes through a third through hole between the lower and upper base plates. The rod also includes a shooting device, an encoder, and a controller. The shooting device is located diagonally above the conveyor belt and is used to capture the shape of the material falling onto the conveyor belt in real time. The shooting device is connected to the controller via the encoder, and the controller controls the inflation and deflation of the buffer airbag.

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