A multi-point idler device for a concave arc section of a belt conveyor

Abstract

The utility model relates to belt conveyor technical field especially a kind of concave arc section multipoint formula pressure wheel device of belt conveyor, including fixed seat, fixed link, support rod, press bar, locking bolt, pressure wheel, adjusting nut, buffer and bearing, the fixed link one end is detachably connected with fixed seat, and the other end is provided with waist hole;The support rod upper portion slidingly penetrates waist hole, and the support rod upper portion is the flat position structure matched with waist hole;The adjusting nut and buffer are all set in support rod, wherein, adjusting nut is threadedly connected with support rod, and fixed link is located between adjusting nut and buffer interval;The press bar tail end is rotatably connected with support rod lower end by locking bolt;The pressure wheel is installed in press bar head end by bearing, by the utility model, belt floating and deviation can be effectively inhibited, and additional load is avoided to conveyor fuselage.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, specifically to a multi-point pressure roller device for the concave arc section of a belt conveyor. Background Technology

[0002] In continuous transport systems in industries such as coal, mining, and power, belt conveyors play a crucial role in material transport. Due to undulating terrain underground or on-site, conveyor lines are often designed with complex layouts including concave arc sections. In these concave arc sections, when the conveyor belt is under no-load or low-load conditions, its edge tension is often less than its center tension, causing the belt to detach from the intermediate idlers, resulting in a "belt slippage" phenomenon. This phenomenon not only causes belt misalignment, accelerated wear, and increased running resistance, but can also lead to material spillage, equipment damage, and even affect the safe and stable operation of the entire transport system.

[0003] Currently, the common solution is to install a belt pressing device at the concave arc section. Traditional belt pressing devices are mostly installed on the longitudinal beams of the conveyor body, belonging to the belt pressing structure of the load-bearing section. Although it can suppress belt slippage to a certain extent, it also brings obvious drawbacks: First, the belt pressing device directly transmits the upward force of the conveyor belt to the machine body, which poses a risk of pulling up the entire frame of the concave arc section, threatening the safety of the roadway foundation and equipment; Second, the belt pressing rollers are usually small in diameter, which can easily cause material jamming and scratching of the belt, and also limit the material throughput efficiency; Third, most existing devices have a fixed structure, making it difficult to flexibly adjust the belt pressing position and fit, resulting in poor adaptability to changes in operating conditions and a large workload for daily maintenance. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a multi-point pressure roller device for the concave arc section of a belt conveyor. It can be independently installed on both sides of the conveyor in a multi-point arrangement, effectively suppressing belt slippage and deviation while avoiding additional load on the conveyor body. It also has functions such as height adjustment and elastic buffering to adapt to different working conditions and extend the service life of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-point pressure roller device for a concave arc section of a belt conveyor, comprising a fixed base, a fixed rod, a support rod, a pressure rod, a locking bolt, a pressure roller, an adjusting nut, a buffer component, and a bearing. One end of the fixed rod is detachably connected to the fixed base, and the other end has a waist hole. The upper part of the support rod slides longitudinally through the waist hole, and the upper part of the support rod has a flat structure that matches the waist hole. The adjusting nut and the buffer component are both sleeved on the support rod, wherein the adjusting nut is threadedly connected to the support rod, and the fixed rod is located between the adjusting nut and the buffer component. The tail end of the pressure rod is rotatably connected to the lower end of the support rod through a locking bolt. The pressure roller is installed at the head end of the pressure rod through a bearing.

[0006] Preferably, the buffer includes a spring and a limiting ring; the limiting ring is sleeved on the support rod; the spring is sleeved on the support rod and compressed between the limiting ring and the fixing rod.

[0007] Preferably, the buffer includes a buffer pad that is fixedly sleeved on the support rod.

[0008] Preferably, the cushioning pad is made of rubber.

[0009] Preferably, the top of the fixing base is provided with a mounting cylinder with fastening screws; the tail end of the fixing rod is slidably disposed in the mounting cylinder and fixed by fastening screws.

[0010] Preferably, the limiting ring and the support rod are threaded together.

[0011] Preferably, the axis of the fixing rod is perpendicular to the conveying direction of the belt conveyor and parallel to the horizontal plane.

[0012] Preferably, the arrangement direction of the pressure bar is perpendicular to the belt conveying direction.

[0013] Preferably, the device is provided in multiple sets and is distributed at intervals on the frame on both sides of the belt conveyor.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This device, through multiple independently arranged structures on both sides of the conveyor frame, effectively avoids the direct application of belt pressing force to the concave arc section of the conveyor body, fundamentally eliminating the safety hazard of increased pull-out force on the machine body due to the application of belt pressing force; its buffer component design, through the compression deformation of the spring, creates elastic contact between the pressure roller and the belt, adaptively compensating for belt undulations and transforming rigid impact into flexible contact, significantly reducing belt wear and running resistance, and improving operational stability and reliability; by adjusting the nuts, waist holes, and locking bolts, the vertical height and horizontal inclination of the pressure roller can be flexibly adjusted to ensure optimal contact between the pressure roller and the belt surface, resulting in significant correction and belt pressing effects; the overall structure is compact and easy to adjust, greatly reducing the daily maintenance frequency and workload of the concave arc section, comprehensively improving the safety and economy of the conveying system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the pressure roller assembly of this utility model; Figure 2 This is a schematic diagram of the pressure roller assembly of this utility model mounted on the frame; Figure 3 This is a schematic diagram of the fixing rod structure of this utility model; Figure 4 This is a schematic diagram of the multi-point installation of the pressure roller assembly of this utility model.

[0016] In the diagram: 1. Fixed base, 2. Fixed rod, 3. Support rod, 4. Pressure rod, 5. Locking bolt, 6. Pressure roller, 7. Adjusting nut, 8. Spring, 9. Limiting ring, 10. Bearing, 11. Frame. Detailed Implementation

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0018] See Figure 1-4 In one embodiment of this utility model, a multi-point pressure roller device for the concave arc section of a belt conveyor includes: a fixed base 1, a fixed rod 2, a support rod 3, a pressure rod 4, a locking bolt 5, a pressure roller 6, an adjusting nut 7, a spring 8, a limiting ring 9, and a bearing 10. This device has multiple sets of pressure roller devices, which are fixedly installed on the frame 11 on both sides of the belt conveyor in a spaced-out manner to prevent the conveyor belt from running off-center in the concave arc section and reduce the maintenance requirements of the concave arc section.

[0019] The fixing seat 1 is fixedly installed on the frame 11 by bolts. The top of the fixing seat 1 is provided with a mounting cylinder. The axis of the mounting cylinder is perpendicular to the conveying direction of the belt conveyor and the axis of the mounting cylinder is parallel to the horizontal plane. The side wall of the mounting cylinder is provided with fastening screws that can be screwed into the inner cavity of the cylinder. The tail end of the fixing rod 2 is slidably disposed in the mounting cylinder. The fixing rod 2 can be pressed and fixed by rotating the fastening screws. The advantage of this setting is that it is convenient to adjust the extent to which the fixing rod 2 extends above the belt.

[0020] The fixed rod 2 has a through-hole on its outer periphery perpendicular to the axial direction; the upper part of the support rod 3 slides through the through-hole. The upper part of the support rod 3 is milled to form a flat structure, that is, two parallel planes. The flat plane is parallel to the straight edge of the through-hole and is fitted with a clearance. This structure can restrict the rotation of the support rod 3 and ensure that it moves only along the direction of the through-hole.

[0021] The adjusting nut 7, spring 8, and limiting ring 9 are all sleeved on the support rod 3. The limiting ring 9 is fixedly connected to the support rod 3, and the adjusting nut 7 is threadedly connected to the support rod 3. At the same time, the lower end of the adjusting nut 7 abuts against the fixed rod 2, and the spring 8 is compressed between the limiting ring 9 and the fixed rod 2.

[0022] The tail end of the pressure rod 4 is rotatably connected to the lower end of the support rod 3 via a locking bolt 5, and the arrangement direction of the pressure rod 4 is perpendicular to the belt conveying direction. The pressure roller 6 is mounted on the head end of the pressure rod 4 via a bearing 10 and can rotate flexibly. By adjusting the tightness of the locking bolt 5, the horizontal inclination angle of the pressure rod 4 can be changed, making the pressure roller 6 fit more closely to the belt surface.

[0023] In this embodiment, the spring 8 and the limiting ring 9 serve as buffer components, enabling the pressure rod 4 and the pressure roller 6 to float up and down, adapting to the ups and downs of the belt during operation, and transforming rigid contact into elastic contact, thereby reducing wear on the belt and improving operational stability.

[0024] In summary, this device, through multiple independently arranged structures on both sides of the conveyor frame, effectively avoids the direct application of belt pressing force to the concave arc section of the conveyor body, fundamentally eliminating the safety hazard of increased pull-out force on the machine body due to the application of belt pressing force. Its unique buffer component design, through the compression deformation of the spring, creates elastic contact between the pressure roller and the belt, which can adaptively compensate for belt undulations, transforming rigid impact into flexible contact, significantly reducing belt wear and running resistance, and improving operational stability and reliability. By adjusting the nuts, waist holes, and locking bolts, the vertical height and horizontal inclination of the pressure roller can be flexibly adjusted to ensure optimal contact between the pressure roller and the belt surface, resulting in significant correction and belt pressing effects. The overall structure is compact and easy to adjust, greatly reducing the daily maintenance frequency and workload of the concave arc section, comprehensively improving the safety and economy of the conveying system. In one embodiment, to facilitate the adjustment of the horizontal height of the pressure roller 6, the limiting ring 9 is threadedly connected to the support rod 3. By adjusting the relative position of the limiting ring 9 and the adjusting nut 7, the height of the support rod 3 can be adjusted.

[0025] In one embodiment, to simplify the structure of the device, the spring 8 and the limiting ring 9 can be replaced by a rubber buffer pad. In practice, the buffer pad is fixedly sleeved on the support rod 3, and its upper end abuts against the fixed rod 2. With the cooperation of the adjusting nut 7 and the buffer pad, the pressure rod 4 and the pressure roller 6 can also achieve the function of floating up and down.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-point idler device for a concave arc segment of a belt conveyor, characterized by: The device includes a fixed base (1), a fixed rod (2), a support rod (3), a pressure rod (4), a locking bolt (5), a pressure wheel (6), an adjusting nut (7), a buffer component, and a bearing (10). One end of the fixed rod (2) is detachably connected to the fixed base (1), and the other end has a waist hole. The upper part of the support rod (3) slides longitudinally through the waist hole, and the upper part of the support rod (3) has a flat structure that matches the waist hole. The adjusting nut (7) and the buffer component are both sleeved on the support rod (3). The adjusting nut (7) is threadedly connected to the support rod (3), and the fixed rod (2) is located between the adjusting nut (7) and the buffer. The tail end of the pressure rod (4) is rotatably connected to the lower end of the support rod (3) through the locking bolt (5). The pressure wheel (6) is installed at the head end of the pressure rod (4) through the bearing (10).

2. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The buffer includes a spring (8) and a limiting ring (9); the limiting ring (9) is sleeved on the support rod (3); the spring (8) is sleeved on the support rod (3) and compressed between the limiting ring (9) and the fixing rod (2).

3. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The buffer component includes a buffer pad that is fixedly sleeved on the support rod (3).

4. A concave segment, multi-point idler of a belt conveyor as set forth in claim 3, characterized in that: The cushioning pad is made of rubber.

5. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The top of the fixed base (1) is provided with a mounting cylinder with fastening screws; the tail end of the fixed rod (2) is slidably disposed in the mounting cylinder and fixed by fastening screws.

6. A concave segment, multi-point idler of a belt conveyor as set forth in claim 2, characterized in that: The limiting ring (9) and the support rod (3) are threaded together.

7. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The axis of the fixed rod (2) is perpendicular to the conveying direction of the belt conveyor and parallel to the horizontal plane.

8. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The arrangement direction of the pressure bar (4) is perpendicular to the belt conveying direction.

9. A concave segment, multi-point idler of a belt conveyor as set forth in claim 1, characterized in that: The device is provided in multiple sets and is distributed at intervals on the frame on both sides of the belt conveyor.

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