A load roller type buffer belt feeder

Abstract

The application provides a kind of bearing roller type buffer belt feeder, relating to bulk material conveying equipment technical field, including driving drum, baffle roller, head drum, tensioning device, rack, driving device, belt, sweeper and bearing buffer mechanism, bearing buffer mechanism is arranged below upper belt along the length direction of belt, including multiple sets of bearing roller group, multiple sets of bearing roller frame and buffer spring group, multiple sets of bearing roller group is arranged along horizontal direction, respectively installed in the top of corresponding bearing roller frame;Buffer spring group is fixedly connected with the bottom of multiple sets of bearing roller frame, and is located between bearing roller frame and rack, is arranged along vertical direction.The application realizes efficient absorption to material falling impact through the cooperation of bearing roller mechanism and buffer spring group, effectively protects the belt, prolongs the service life of the equipment, and improves the running stability and working condition adaptability of the feeder.

Description

Technical Field

[0001] This invention relates to the field of bulk material conveying equipment, and more particularly to a load-bearing roller buffer belt feeder. Background Technology

[0002] In the conveying system of bulk materials such as ore, coal, and coke, belt feeders are the core equipment for achieving uniform and continuous feeding of materials. They need to directly receive materials falling from silos or chutes and are subjected to long-term impact loads from the materials.

[0003] The existing load-bearing and buffering structures of belt feeders are mainly rubber buffer rollers or rigid roller groups, which have obvious technical defects: the rubber layer of rubber buffer rollers is prone to fatigue wear, aging and cracking due to long-term impact, and the buffering effect decays rapidly with the use time, requiring frequent shutdowns for replacement, which not only has high maintenance costs, but also affects the continuity of production; rigid roller groups have no elastic buffering capacity, and the impact load of falling materials will be directly transmitted to the belt and frame, which can easily cause belt tearing, frame deformation and other failures, significantly shortening the overall service life of the equipment; moreover, the existing buffering structures are mostly single-point arrangements, with uneven force distribution, which cannot adapt to the impact conditions of large conveying volume and high drop of materials, resulting in large belt vibration and poor operating stability during feeding.

[0004] To address the aforementioned issues, there is an urgent need to develop a belt feeder buffer bearing structure that offers stable buffering performance, uniform stress distribution, and a long service life, in order to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] To address the aforementioned technical problems, a bearing roller type buffer belt feeder is provided. This invention primarily utilizes the coordinated operation of the bearing roller mechanism and the buffer spring assembly to achieve efficient absorption of the impact of falling materials, effectively protecting the belt, extending the equipment's service life, and simultaneously improving the feeder's operational stability and adaptability to various working conditions.

[0006] The technical means employed in this invention are as follows:

[0007] A load-bearing roller type buffer belt feeder includes: a drive roller, a guide roller, a head roller, a tensioning device, a frame, a drive unit, a belt, a cleaner, and a load-bearing buffer mechanism. The drive roller, guide roller, head roller, tensioning device, drive unit, and cleaner are all mounted on the frame. The output end of the drive unit is connected to the drive roller. The two sides of the belt are sleeved and connected to the drive roller and the head roller. The guide roller is arranged on the left and right sides of the upper belt along the belt length direction. The tensioning device is used to adjust the belt tension. The cleaner is used to remove scattered materials on the belt feeder. The load-bearing buffer mechanism is arranged below the upper belt along the length of the belt and includes multiple sets of load-bearing idler groups, multiple sets of load-bearing idler frames, and buffer spring groups. The multiple sets of load-bearing idler groups are arranged horizontally and are respectively installed on the top of the corresponding load-bearing idler frames. The buffer spring groups are fixedly connected to the bottom of the multiple sets of load-bearing idler frames and are located between the load-bearing idler frames and the machine frame, and are arranged vertically.

[0008] Furthermore, each set of support rollers consists of two adjacent support rollers, with both ends of the support rollers rotatably mounted on bearing seats, which are fixedly connected to the support roller frame.

[0009] Furthermore, the two load-bearing rollers of each load-bearing roller group are arranged horizontally and parallel, and the multiple load-bearing roller groups are arranged at equal intervals.

[0010] Furthermore, the bearing buffer mechanism is arranged continuously and evenly along the length of the belt, and the spacing between two adjacent sets of bearing idlers is 300~450mm, which can be adjusted according to the characteristics of the material.

[0011] Furthermore, the bearing roller adopts a high wear-resistant alloy steel roller core, and the outer circle of the roller core is covered with a wear-resistant rubber layer with a thickness of 10~20mm.

[0012] Furthermore, the buffer spring assembly includes several springs, which are cylindrical helical springs or disc springs, and the several springs are respectively arranged directly below each bearing roller.

[0013] Furthermore, the load-bearing roller frame adopts a welded steel frame structure, with a base machined at the top to match the bearing seat of the load-bearing roller, and a spring guide column fixed at the bottom. The spring guide column is arranged vertically and slidably connected to the frame, and the spring is sleeved on the outside of the corresponding spring guide column.

[0014] Furthermore, the buffer spring assembly is equipped with a preload adjustment device, which is located at the connection position between the buffer spring assembly and the frame, and changes the preload force by adjusting the initial compression of the spring.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The bearing roller buffer belt feeder provided by the present invention has excellent buffering effect and effectively protects the belt: Through the multi-level elastic buffering structure of bearing roller + buffer spring group, it can efficiently absorb the impact energy of falling materials, avoid the impact load being directly transmitted to the belt and frame, greatly reduce the vibration amplitude of the belt, prevent belt tearing and wear, and significantly extend the service life of the belt.

[0016] 2. The bearing roller buffer belt feeder provided by the present invention has uniform force distribution and high operational stability: the bearing buffer mechanism is evenly arranged at multiple points along the belt length direction, and each set of bearing rollers independently bears the load and achieves buffering, so that the belt is evenly stressed as a whole, eliminating local stress concentration, improving the operational stability of the feeder, and reducing failures such as material spillage and deviation.

[0017] 3. The bearing roller buffer belt feeder provided by this invention has strong adaptability to working conditions and is easy to adjust: the buffer spring group is equipped with a pre-tension adjustment device, which can flexibly adjust the spring pre-tension force according to the material drop and the change of conveying volume, so as to meet the feeding needs of different industries and different working conditions and has a wide range of applications.

[0018] 4. The bearing roller buffer belt feeder provided by this invention has a reliable structure and low maintenance cost: the bearing roller frame adopts a high-strength structure and is equipped with spring guide columns to prevent spring skewing failure. The overall structure has strong impact resistance and deformation resistance. Both the bearing roller and the buffer spring assembly are modular designs, which are convenient to disassemble and assemble. The bearing roller is a vulnerable part that directly contacts the material. When replacing it, you only need to loosen the bolts at both ends of the bearing roller and pull the bearing roller out horizontally along the slot. There is no need to remove other parts, which reduces equipment maintenance time and maintenance costs.

[0019] Based on the above reasons, this invention can be widely promoted in the field of continuous feeding of bulk materials in industries such as mining, metallurgy, and building materials. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the bearing roller buffer belt feeder of the present invention.

[0022] In the diagram: 1. Drive roller; 2. Load-bearing idler assembly; 3. Load-bearing idler frame; 4. Buffer spring assembly; 5. Baffle roller; 6. Redirecting idler; 7. Protective device; 8. Head roller; 9. Tensioning device; 10. Frame; 11. Pre-tensioning adjustment device; 12. Bracket; 13. Drive unit; 14. Belt; 15. Sweeper. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0028] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0030] Example 1 This invention provides a load-bearing roller buffer belt feeder, which is suitable for continuous feeding of bulk materials in industries such as mining, metallurgy, and building materials.

[0031] The present invention provides a bearing roller type buffer belt feeder, comprising a drive roller 1, a stop roller 5, a head roller 8, a tensioning device 9, a frame 10, a drive device 13, a belt 14, a cleaner, and a bearing buffer mechanism. The drive roller 1, the stop roller 5, the head roller 8, the tensioning device 9, the drive device 13, and the cleaner 15 are all mounted on the frame 10. The output end of the drive device 13 is connected to the drive roller 1. The two sides of the belt 14 are sleeved and connected to the drive roller 1 and the head roller 8. The stop roller 5 is arranged along the length of the belt 14 on the left and right sides of the upper belt 14. The tensioning device 9 is used to adjust the tension of the belt 14. The cleaner 15 is used to remove scattered materials on the belt feeder. The load-bearing buffer mechanism is arranged below the upper belt 14 along the length of the belt 14, and includes multiple sets of load-bearing idler groups 2, multiple sets of load-bearing idler frames 3, and buffer spring groups 4. The multiple sets of load-bearing idler groups 2 are arranged in the horizontal direction and are respectively installed on the top of the corresponding load-bearing idler frames 3. The buffer spring groups 4 are fixedly connected to the bottom of the multiple sets of load-bearing idler frames 3 and are located between the load-bearing idler frames 3 and the frame 10, and are arranged in the vertical direction.

[0032] Example 2 The present invention provides a load-bearing roller type buffer belt feeder, comprising a drive roller 1, multiple guide rollers 5, redirecting idler rollers 6, a protection device 7, a head roller 8, a tensioning device 9, a frame 10, a bracket 12, a drive device 13, a belt 14, a cleaner 15, a load-bearing buffer mechanism, etc. The drive roller 1, guide rollers 5, redirecting idler rollers 6, protection device 7, head roller 8, tensioning device 9, frame 10, bracket 12, drive device 13, belt 14, and cleaner 15 are all conventional equipment on existing belt feeders and will not be described here. The drive roller 1, the guide roller 5, the redirecting roller 6, the protective device 7, the head roller 8, the tensioning device 9, the bracket 12, and the drive device 13 are all mounted on the frame 10. The drive roller 1 and the head roller 8 are rotatably connected to the frame 10. The output end of the drive device 13 is connected to the drive roller 1. The two sides of the belt 14 are sleeved and connected to the drive roller 1 and the head roller 8. The drive roller 1 is driven to rotate by the drive device 13. The head roller 8 is driven and drives the belt 14 to rotate by the drive roller 1 and the head roller 8. The guide roller 5 is rotatably connected to the frame 10. The guide roller 5 is arranged on the left and right sides of the upper belt 14 along the length of the belt 14. The guide roller 5 is spaced apart on each side. The tensioning device 9 is used to adjust the tension of the belt 14. The cleaner 15 is used to remove the scattered material on the belt feeder.

[0033] The load-bearing buffer mechanism is arranged below the upper belt 14 along the length of the belt 14. The load-bearing buffer mechanism includes multiple sets of load-bearing idler groups 2, multiple sets of load-bearing idler frames 3, and buffer spring groups 4.

[0034] Multiple sets of load-bearing idler groups 2 constitute the load-bearing roller mechanism. The load-bearing roller mechanism uses a single load-bearing roller as the basic unit. All load-bearing rollers are arranged horizontally and at equal intervals. Every two adjacent load-bearing rollers form a set of load-bearing idler groups 2, which together bear the material load and impact load transmitted by the belt 14. The two ends of the load-bearing rollers are respectively rotatably mounted on the bearing seats on both sides, and the bearing seats are fixedly connected to the load-bearing idler frame 3.

[0035] The support roller frame 3 is a dedicated mounting base for the support roller group 2. Each support roller group 2 is matched with a support roller frame 3 (the two support rollers of the same support roller group 2 are installed on the same support roller frame 3). The bearing seats of the support rollers are fixedly connected to the top of the support roller frame 3. Multiple support roller groups 2 are arranged in a horizontal direction and installed on the top of the corresponding support roller frame 3. The bottom of the multiple support roller frames 3 is fixedly connected to the buffer spring group 4.

[0036] The buffer spring assembly 4 is arranged vertically between the multiple sets of bearing roller frames 3 and the frame 10, providing elastic buffer stroke for the bearing roller frames 3 and bearing rollers to absorb the impact energy generated by the falling material.

[0037] In this embodiment, the bearing roller adopts a high wear-resistant alloy steel roller core, and the outer circle of the roller core is covered with a wear-resistant rubber layer with a thickness of 10~20mm. This not only improves the impact resistance and wear resistance of the bearing roller, but also enhances the fit with the belt 14 and reduces the wear of the belt 14.

[0038] In this embodiment, the two bearing rollers of the bearing roller group 2 are arranged horizontally and parallel. To prevent material spillage during material conveying, a full-length guide trough can be set above the belt feeder. The outer skirt of the guide trough is in contact with the belt conveyor. The guide trough is existing technology and is not included in this invention, so it will not be described.

[0039] In this embodiment, the buffer spring assembly 4 consists of several cylindrical helical springs or disc springs, which are respectively arranged directly below each carrying roller. The buffer spring assembly 4 is equipped with a preload adjustment device 11, which is located at the connection between the buffer spring assembly 4 and the frame 10. The preload can be changed by adjusting the initial compression of the springs to adapt to different material drop, different conveying volumes, and internal leveling of the carrying roller assembly 2. It should be noted that the initial compression of the springs is not adjusted to be very large, about 20 to 30 millimeters, to avoid the carrying roller assembly 2 from detaching from the belt 14.

[0040] In this embodiment, the bearing roller frame 3 adopts a welded steel frame structure. Its top is machined with a base that matches the bearing seat of the bearing roller (the bearing seat is fixedly installed on the corresponding base), and the bottom is fixed with a spring guide column. The spring guide column is arranged vertically and slidably connected to the frame 10 (the spring guide column can move up and down on the frame 10). The spring of the buffer spring group 4 is sleeved on the outside of the corresponding spring guide column to prevent the spring from deflecting when it is loaded and to ensure that the buffering direction is consistent with the impact direction.

[0041] Specifically, the preload adjustment device 11 includes multiple sets of nuts, which are respectively connected to multiple springs of the buffer spring assembly 4. Each spring has an upper pressure plate fixedly connected to its upper end and a lower base fixedly connected to its lower end. The upper pressure plate is fixed to the upper end of the spring guide post, and the lower base is fixed to the frame 10. The lower base slides on the spring guide post, allowing the spring guide post to slide up and down along the lower base. The nut is threaded to the lower end of the spring guide post and is located below the frame 10 below the lower base, contacting the lower surface of the frame 10 at this location. By rotating the adjusting nut, the adjusting spring guide post moves vertically up and down, thereby driving the upper pressure plate to move synchronously (the upper pressure plate will drive the bearing roller frame 3 and the bearing roller to move together), changing the initial distance between the upper pressure plate and the lower base, thus adjusting the initial compression of the buffer spring assembly 4 and changing the spring preload. For example, when the adjusting nut is turned clockwise, the spring guide post moves downward in the vertical direction, and the upper end of the spring guide post moves downward along with the upper pressure plate, thus reducing the initial distance between the upper pressure plate and the lower base.

[0042] In this embodiment, the load-bearing buffer mechanism is continuously and uniformly arranged along the length of the belt 14, and multiple sets of load-bearing idler groups 2 are arranged at equal intervals. The distance between two adjacent sets of load-bearing idler groups 2 is 300~450mm, forming a multi-point uniform buffer support system, so that the belt 14 is subjected to uniform force and reduces local stress concentration. The distance between two load-bearing rollers in the same set of load-bearing idler groups 2 is also 300~450mm, that is, the distance between two adjacent load-bearing rollers is 300~450mm.

[0043] Working principle of the invention: The working principle of the bearing roller buffer belt feeder of this invention is that the bearing roller group uniformly bears the load and the buffer spring group elastically absorbs the energy. At the same time, it can continuously and stably transport bulk materials while efficiently offsetting the impact of falling materials, so as to achieve stable feeding under heavy load and high drop conditions.

[0044] The impact load generated by the falling material is transmitted downwards to the support roller frame, which then transmits the impact force to the buffer spring assembly arranged vertically at the bottom. Under the impact, the springs undergo elastic compression, converting the instantaneous impact energy into elastic potential energy, significantly reducing the transmission of the impact to the frame and belt, and preventing belt tearing, frame deformation, and equipment vibration.

[0045] The load-bearing buffer mechanism is arranged continuously and at equal intervals along the length of the belt, so that the belt is stably supported throughout its entire length, with uniform force and no local stress concentration. Combined with the limiting rollers on both sides, it fundamentally reduces problems such as belt deviation, material spillage, and jumping.

[0046] The buffer spring assembly can adjust the initial preload through the preload adjustment device to adapt to different material weights and drop conditions. After the impact, the spring quickly rebounds and resets, driving the idler frame and the load-bearing idler assembly back to their original positions, ensuring that the belt is always in a stable operating state.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A load-bearing roller type buffer belt feeder, characterized in that, include: The machine includes a drive roller (1), a stop roller (5), a head roller (8), a tensioning device (9), a frame (10), a drive device (13), a belt (14), a cleaner (15), and a load-bearing buffer mechanism. The drive roller (1), the stop roller (5), the head roller (8), the tensioning device (9), the drive device (13), and the cleaner (15) are all mounted on the frame (10). The output end of the drive device (13) is connected to the drive roller (1). The two sides of the belt (14) are sleeved and connected to the drive roller (1) and the head roller (8). The stop roller (5) is arranged on the left and right sides of the upper belt (14) along the length of the belt (14). The tensioning device (9) is used to adjust the tension of the belt (14). The cleaner (15) is used to remove the scattered materials on the belt feeder. The bearing buffer mechanism is arranged below the upper belt (14) along the length of the belt (14), including multiple sets of bearing idler groups (2), multiple sets of bearing idler frames (3) and buffer spring groups (4). The multiple sets of bearing idler groups (2) are arranged in the horizontal direction and are respectively installed on the top of the corresponding bearing idler frames (3). The buffer spring group (4) is fixedly connected to the bottom of the multiple sets of bearing idler frames (3) and is located between the bearing idler frames (3) and the frame (10), and is arranged in the vertical direction.

2. The bearing roller type buffer belt feeder according to claim 1, characterized in that, Each set of support rollers (2) consists of two adjacent support rollers, the two ends of which are rotatably mounted on bearing seats, and the bearing seats are fixedly connected to the support roller frame (3).

3. The bearing roller buffer belt feeder according to claim 2, characterized in that, The two bearing rollers of each bearing roller group (2) are arranged horizontally in parallel, and the multiple bearing roller groups (2) are arranged at equal intervals.

4. The bearing roller type buffer belt feeder according to claim 1, characterized in that, The load-bearing buffer mechanism is arranged continuously and evenly along the length of the belt (14), and the distance between two adjacent load-bearing roller groups (2) is 300~450mm.

5. The bearing roller buffer belt feeder according to claim 2 or 3, characterized in that, The bearing roller is made of high wear-resistant alloy steel core, and the outer circle of the core is covered with a wear-resistant rubber layer with a thickness of 10~20mm.

6. The bearing roller buffer belt feeder according to claim 2, characterized in that, The buffer spring assembly (4) includes several springs, which are cylindrical helical springs or disc springs, and the several springs are respectively arranged directly below each bearing roller.

7. The bearing roller buffer belt feeder according to claim 6, characterized in that, The bearing roller frame (3) adopts a welded steel frame structure. Its top is machined with a base that matches the bearing seat of the bearing roller, and its bottom is fixed with a spring guide column. The spring guide column is arranged vertically and slidably connected to the frame (10). The spring is sleeved on the outside of the corresponding spring guide column.

8. The bearing roller buffer belt feeder according to claim 6, characterized in that, The buffer spring assembly (4) is equipped with a preload adjustment device (11), which is located at the connection position between the buffer spring assembly (4) and the frame (10). The preload is changed by adjusting the initial compression of the spring.

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