Broken belt capturing device for belt conveyor
By linking the guide components and drive unit, the problems of response delay and uneven clamping of belt breakage catcher are solved, realizing fast and reliable belt breakage catch, and improving the service life and adaptability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-17
AI Technical Summary
Existing belt conveyor breakage catchers suffer from delayed response, complex structure, high maintenance costs, and uneven clamping, making them ineffective at intercepting high-speed broken belt sections.
The device employs a guide assembly and drive unit design, and through the linkage of trigger wheel, folding plate, limit plate and tension spring, it can sense tension changes in real time to achieve rapid capture; guide roller group and limit roller ensure smooth clamping process, and modular design can adapt to different bandwidths.
It achieves rapid response and reliable capture in case of belt breakage, avoids slippage and equipment damage, and improves the service life and adaptability of the equipment.
Smart Images
Figure CN224132062U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of belt break catchers, specifically a belt break catcher for belt conveyors. Background Technology
[0002] Belt conveyors are widely used in mines, ports, and other fields, but conveyor belt breakage accidents are frequent, easily leading to material spillage, equipment damage, and even personal injury. Traditional belt breakage catchers suffer from three major technical bottlenecks: First, mechanically triggered catchers rely on the conveyor belt sagging to trigger, with response delays often exceeding 0.5 seconds, making them ineffective at intercepting high-speed broken belt sections; second, hydraulically driven catchers have complex structures, require additional power sources, and have high maintenance costs; third, existing clamping mechanisms mostly use unilateral pressure, resulting in uneven force on the belt and causing slippage. The core reason for this lies in the lack of a coordinated mechanism for real-time sensing of belt tension and instantaneous conversion of mechanical energy, as well as an adaptive clamping structure design under three-dimensional spatial constraints. A new belt breakage catcher is urgently needed in this field. Utility Model Content
[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a belt break catcher for belt conveyors, enabling rapid response in belt break catching.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A belt breakage catcher for a belt conveyor includes a base, an idler roller, and two catching units. A guide rail is fixedly mounted on the base, a slider is mounted on the guide rail, and a bearing seat is fixedly mounted on the slider. The idler roller's shaft is rotatably mounted in the bearing seat. The two catching units are symmetrically arranged on both sides of the idler roller. Each catching unit includes an upper clamping plate and a lower clamping plate. The upper clamping plate is fixed to the base. The lower clamping plates are parallel and spaced below the upper clamping plate. A guide assembly is mounted on the base, and the lower clamping plates are mounted on the guide assembly. The guide assembly is connected to the slider via a transmission. The movement of the slider drives the guide assembly, thereby causing the lower clamping plates to move closer to the upper clamping plate. The device also includes a drive unit. The drive unit includes a triggering device and two transmission assemblies. The triggering device includes a stand, a folding plate, a first pull rod, a second pull rod, a tension spring, a trigger wheel, and a limiting plate. The stand is fixed to the base. A support is rotatably mounted on the stand. The support shaft is fixed to the middle of the folding plate; the trigger wheel is rotatably mounted on the top of the folding plate; two limiting plates are configured and symmetrically fixed on both sides of the bottom of the folding plate; the two ends of the first pull rod are respectively hinged to the folding plate and the second pull rod, and the other end of the second pull rod is hinged to the base; one end of the tension spring is fixed to the second pull rod, and the other end is fixed to the base; two transmission components are configured and symmetrically arranged on both sides of the triggering device; the transmission components include a spring, an L-shaped plate, and a guide shaft; the L-shaped plate is fixed to the slider; one end of the limiting plate abuts against the L-shaped plate; the L-shaped plate is provided with a guide hole to accommodate the guide shaft, the guide shaft is slidably disposed through the guide hole, and the end of the guide shaft is fixedly connected to the base; the axis of the guide shaft is parallel to the length direction of the guide rail; the spring is sleeved on the guide shaft, one end abuts against the base, and the other end abuts against the L-shaped plate.
[0006] Preferably, a spherical protrusion is fixedly provided at one end of the limiting plate away from the folding plate, and the limiting plate abuts against the L-shaped plate through the spherical protrusion.
[0007] Preferably, a traction rod is fixedly installed on the L-shaped plate; an elbow is fixedly installed on the end of the traction rod away from the L-shaped plate; and an anti-collision pad is fixedly installed on the elbow.
[0008] Preferably, the guiding assembly includes a bracket, guide rollers, a guide plate, a limiting roller, a vertical plate, and a push plate; the bracket is fixed to the base; the limiting rollers and guide rollers are rotatably mounted on the bracket; multiple guide rollers are configured; the axes of the multiple guide rollers are arranged parallel and spaced apart in the same plane, and the distance between the axes of the multiple guide rollers and the base in the vertical plane gradually increases; the multiple guide rollers are arranged obliquely on the bracket; the limiting rollers are placed above the guide rollers, and their axes are parallel to the axes of the guide rollers; the guide plate is placed between the guide rollers and the limiting rollers, with its lower end face rolling in contact with the guide rollers and its upper end face rolling in contact with the limiting rollers; the vertical plate is vertically fixed to the upper part of the guide plate; the lower clamping plate is fixed to the top of the vertical plate; the push plate is fixed to one side of the vertical plate; the lower part of the push plate is provided with a guide groove adapted to the rotating shaft of the idler roller, the opening of the guide groove is facing the base, and the rotating shaft of the idler roller is movably placed in the guide groove.
[0009] Preferably, the guide assembly further includes a positioning roller; the positioning roller is rotatably disposed on the top of the bracket; the positioning roller makes rolling contact with the side of the upright plate.
[0010] Preferably, a correction roller is rotatably mounted on the base.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] Through the coordinated design of the trigger wheel, folding plate, limit plate, and tension spring, the system can sense changes in conveyor belt tension in real time and quickly release the locking mechanism upon belt breakage, ensuring timely and reliable grabbing action and preventing conveyor belt slippage or equipment damage due to delays. A separate energy storage design for the tension spring and spring is employed; the tension spring maintains locking under normal operating conditions, while the spring provides rapid drive after belt breakage. The two operate independently, ensuring smooth slider movement and preventing jamming or malfunctions. The obliquely arranged guide roller group, in conjunction with the limit roller and positioning roller, allows the lower clamping plate to rise smoothly along a preset trajectory, automatically adjusting its angle during clamping to prevent conveyor belt deviation or wrinkling and ensuring even distribution of clamping force. The limit plate features a spherical protrusion contact design, reducing frictional resistance with the L-shaped plate and making triggering more sensitive; simultaneously, anti-collision pads buffer the reset impact, improving equipment lifespan. Manual quick reset is achieved through a traction rod and elbow structure, eliminating the need for disassembly or complex adjustments, reducing downtime and improving equipment reusability. The overall design is modular, which can be adapted to belt conveyors with different bandwidths. The addition of correction rollers further prevents the conveyor belt from running off-track, making it suitable for complex working conditions. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0015] Figure 3 This is a schematic diagram of the structure of the bracket in this utility model;
[0016] Figure 4 This is a schematic diagram of the guide plate in this utility model;
[0017] Figure 5 This is a schematic diagram of the drive unit in this utility model;
[0018] Figure 6 for Figure 5 A magnified view of a section at point B.
[0019] in:
[0020] 1. Base; 2. Lower clamping plate; 3. Upper clamping plate; 4. Idler roller; 5. Drive unit; 6. Push plate; 7. Guide rail; 8. Slider; 9. Guide groove; 10. Rotating shaft; 11. Guide assembly; 12. Bracket; 13. Guide roller; 14. Positioning roller; 15. Limiting roller; 16. Vertical plate; 17. Guide plate; 18. Folding plate; 19. Anti-collision pad; 20. Elbow; 21. Spring; 22. Trigger wheel; 23. Guide shaft; 24. L-shaped plate; 25. Traction rod; 26. Limiting plate; 27. Support shaft; 28. First pull rod; 29. Tension spring; 30. Second pull rod. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] like Figures 1 to 6As shown, a belt breakage catcher for a belt conveyor includes a base 1, an idler roller 4, and two catching units. A guide rail 7 is fixedly mounted on the base 1, a slider 8 is mounted on the guide rail 7, and a bearing seat is fixedly mounted on the slider 8. The shaft 10 of the idler roller 4 is rotatably mounted in the bearing seat. The guide rail 7 is arranged parallel to the conveyor belt of the belt conveyor. The idler roller 4 is used to support the bottom of the upper section of the conveyor belt. The two catching units are symmetrically arranged on both sides of the idler roller 4. Each catching unit includes an upper clamping plate 3 and a lower clamping plate 2. The edge of the conveyor belt of the belt conveyor is located in the area between the upper clamping plate 3 and the lower clamping plate 2. The upper clamping plate 3 is fixed to the base 1. The lower clamping plates 2 are arranged parallel to each other below the upper clamping plate 3. When the belt conveyor is operating normally... During operation, the conveyor belt does not contact the upper clamping plate 3 or the lower clamping plate 2; a guide assembly 11 is installed on the base 1, and the lower clamping plate 2 is installed on the guide assembly 11; the guide assembly 11 is connected to the slider 8 via transmission; the movement of the slider 8 drives the guide assembly 11, thereby causing the lower clamping plate 2 to move closer to the upper clamping plate 3; it also includes a drive unit 5; the drive unit 5 includes a triggering device and two transmission assemblies; the triggering device includes a stand, a folding plate 18, a first pull rod 28, a second pull rod 30, a tension spring 29, a trigger wheel 22, and a limiting plate 26; the stand is fixed on the base 1; a support shaft 27 is rotatably mounted on the stand, and the middle part of the folding plate 18 is fixed on the support shaft 27; the trigger wheel 22 is rotatably mounted on the folding plate 18. The top of plate 18; the trigger wheel 22 rolls in contact with the lower end face of the upper section of the conveyor belt; two limiting plates 26 are configured and symmetrically fixed on both sides of the bottom of the folding plate 18; the two ends of the first pull rod 28 are respectively hinged to the folding plate 18 and the second pull rod 30, and the other end of the second pull rod 30 is hinged to the base 1; one end of the tension spring 29 is fixed to the second pull rod 30, and the other end is fixed to the base 1; two transmission components are configured and symmetrically arranged on both sides of the triggering device; when the conveyor belt of the belt conveyor is tensioned, the conveyor belt presses down the trigger wheel 22, the folding plate 18 deflects around the axis of the support shaft 27, pulling the first pull rod 28 and the second pull rod 30 upward, and the tension spring 29 is stretched. At this time, the limiting plate 26 is in a horizontal state; with the support shaft 27 as the center, the weight of the side of the limiting plate 26 closer to the limiting plate 26 is greater than the weight of the side closer to the trigger wheel 22; the transmission assembly includes a spring 21, an L-shaped plate 24 and a guide shaft 23; the L-shaped plate 24 is fixed on the slider 8; one end of the limiting plate 26 abuts against the L-shaped plate 24; the L-shaped plate 24 is provided with a guide hole to accommodate the guide shaft 23, the guide shaft 23 is slidably provided through the guide hole, and the end of the guide shaft 23 is fixedly connected to the base 1; the axial direction of the guide shaft 23 is parallel to the length direction of the guide rail 7; the spring 21 is sleeved on the guide shaft 23, one end abuts against the base 1, and the other end abuts against the L-shaped plate 24.When the belt conveyor is working normally, the conveyor belt presses down the trigger wheel 22, the tension spring 29 is in a stretched state, and one end of the limiting plate 26 presses against one side of the L-shaped plate 24, preventing the L-shaped plate 24 from sliding on the guide shaft 23. When the conveyor belt breaks, under the weight of the folding plate 18 and the action of the tension spring 29, the limiting plate 26 moves downward around the axis of the support shaft 27, causing the limiting plate 26 to disengage from the L-shaped plate 24. The spring 21 pushes the L-shaped plate 24 to move along the guide shaft 23, which in turn drives the slider 8 to move on the guide rail 7. The slider 8 drives the rotating shaft 10 of the idler roller 4 to move along the guide rail 7, thereby driving the guide assembly 11 to move the lower clamping plate 2 towards the upper clamping plate 3, clamping the conveyor belt between the upper clamping plate 3 and the lower clamping plate 2.
[0023] In this embodiment, a spherical protrusion is fixedly provided on the end of the limiting plate 26 away from the folding plate 18. The limiting plate 26 abuts against the L-shaped plate 24 through the spherical protrusion, which reduces the friction between the limiting plate 26 and the L-shaped plate 24, so that the limiting plate 26 can easily contact and separate from the L-shaped plate 24.
[0024] In this embodiment, a traction rod 25 is fixedly installed on the L-shaped plate 24; an elbow 20 is fixedly installed on the end of the traction rod 25 away from the L-shaped plate 24; an anti-collision pad 19 is fixedly installed on the elbow 20, which is used to reduce the impact force between the elbow 20 and the base 1 and extend the service life of the equipment. By pulling the elbow 20, the L-shaped plate 24 can be returned to its original position, thus achieving reuse.
[0025] In this embodiment, the guide assembly 11 is a conventional design, including a bracket 12, guide rollers 13, guide plate 17, limiting rollers 15, upright plate 16, and push plate 6; the bracket 12 is fixed on the base 1; the limiting rollers 15 and guide rollers 13 are rotatably mounted on the bracket 12; multiple guide rollers 13 are configured; the axes of the multiple guide rollers 13 are arranged parallel and spaced apart in the same plane, the distance between the axes of the multiple guide rollers 13 and the base 1 in the vertical plane gradually increases, and the multiple guide rollers 13 are arranged obliquely on the bracket 12; the limiting rollers 15 are placed on the guide plate 16. Above the guide roller 13, the axis is parallel to the axis of the guide roller 13; the guide plate 17 is placed between the guide roller 13 and the limiting roller 15, with its lower end face rolling in contact with the guide roller 13 and its upper end face rolling in contact with the limiting roller 15; the upright plate 16 is vertically fixed to the upper part of the guide plate 17; the lower clamping plate 2 is fixed to the top of the upright plate 16; the push plate 6 is fixed to one side of the upright plate 16; the lower part of the push plate 6 is provided with a guide groove 9 that matches the rotating shaft 10 of the idler roller 4, the opening of the guide groove 9 is set towards the base 1, and the rotating shaft 10 of the idler roller 4 is movably placed in the guide groove 9. When the guide plate 17 moves on the bracket 12, the lower clamping plate 2 moves closer to or away from the upper clamping plate 3 in a state parallel to the upper clamping plate 3.
[0026] In this embodiment, the guide assembly 11 further includes a positioning roller 14; the positioning roller 14 is rotatably disposed on the top of the bracket 12; the positioning roller 14 makes rolling contact with the side of the upright plate 16; the positioning roller 14 is used to reduce the shaking of the upright plate 16 and make the equipment run more smoothly.
[0027] In this embodiment, a guide roller 4 is rotatably mounted on the base 1 to prevent the conveyor belt from running off-track.
[0028] Working principle
[0029] When the conveyor belt is running normally, its downward trigger wheel 22 keeps the folding plate 18 horizontal, and the limiting plate 26 presses against the L-shaped plate 24 to lock the position of the slider 8. At this time, the tension spring 29 is in a stretched state, the spring 21 is compressed, and the lower clamping plate 2 and the upper clamping plate 3 remain separated. When the conveyor belt breaks, the trigger wheel 22 loses pressure, the folding plate 18 deflects downward under its own weight and the action of the tension spring 29, and the limiting plate 26 disengages from the L-shaped plate 24. The compressed spring 21 immediately releases its elastic force, pushing the L-shaped plate 24 to slide along the guide shaft 23, driving the slider 8 to move along the guide rail 7. When the slider 8 moves, it drives the idler roller 4 to rotate 10 through the guide groove 9 of the push plate 6, and the linkage guide assembly 11 makes the lower clamping plate 2 move smoothly upward along the obliquely arranged guide roller 13 system, forming a clamping grip with the fixed upper clamping plate 3, instantly clamping the broken conveyor belt. The correction idler roller 4 and the positioning roller 14 work together to ensure the centering of the conveyor belt during the clamping process.
Claims
1. A belt breakage catcher for a belt conveyor, comprising a base (1), an idler roller (4), and two catcher units; a guide rail (7) is fixedly mounted on the base (1), a slider (8) is mounted on the guide rail (7), a bearing seat is fixedly mounted on the slider (8), and the shaft (10) of the idler roller (4) is rotatably mounted in the bearing seat; the two catcher units are symmetrically arranged on both sides of the idler roller (4), and each catcher unit includes an upper clamping plate (3) and a lower clamping plate (2); the upper clamping plate (3) is fixed on the base (1); the lower clamping plates (2) are arranged parallel to each other below the upper clamping plate (3); a guide assembly (11) is mounted on the base (1), and the lower clamping plate (2) is mounted on the guide assembly (11); the guide assembly (11) is connected to the slider (8) in a transmission manner; the movement of the slider (8) drives the guide assembly (11), thereby causing the lower clamping plate (2) to move closer to the upper clamping plate (3), characterized in that, It also includes a drive unit (5); the drive unit (5) includes a triggering device and two transmission components; the triggering device includes a stand, a folding plate (18), a first pull rod (28), a second pull rod (30), a tension spring (29), a trigger wheel (22), and a limiting plate (26); the stand is fixed on the base (1); a support shaft (27) is rotatably mounted on the stand, and the middle part of the folding plate (18) is fixed on the support shaft (27); the trigger wheel (22) is rotatably mounted on the top of the folding plate (18); two limiting plates (26) are configured and symmetrically fixed on both sides of the bottom of the folding plate (18); the two ends of the first pull rod (28) are respectively hinged to the folding plate (18) and the second pull rod (30), and the other end of the second pull rod (30) is hinged to the base (1); the tension spring (29) One end of the spring (21) is fixed to the second pull rod (30), and the other end is fixed to the base (1). There are two transmission components, which are symmetrically arranged on both sides of the triggering device. The transmission components include a spring (21), an L-shaped plate (24), and a guide shaft (23). The L-shaped plate (24) is fixed on the slider (8). One end of the limiting plate (26) abuts against the L-shaped plate (24). The L-shaped plate (24) is provided with a guide hole for accommodating the guide shaft (23). The guide shaft (23) is slidably provided through the guide hole. The end of the guide shaft (23) is fixedly connected to the base (1). The axial direction of the guide shaft (23) is parallel to the length direction of the guide rail (7). The spring (21) is sleeved on the guide shaft (23), with one end abutting against the base (1) and the other end abutting against the L-shaped plate (24).
2. The belt breakage catcher for belt conveyors as described in claim 1, characterized in that, A spherical protrusion is fixedly provided at one end of the limiting plate (26) away from the folding plate (18), and the limiting plate (26) abuts against the L-shaped plate (24) through the spherical protrusion.
3. The broken-belt catcher for a belt conveyor as recited in claim 1, wherein A traction rod (25) is fixedly installed on the L-shaped plate (24); an elbow (20) is fixedly installed on one end of the traction rod (25) away from the L-shaped plate (24); and an anti-collision pad (19) is fixedly installed on the elbow (20).
4. The broken-belt catcher for a belt conveyor as recited in claim 1, wherein The guiding assembly (11) includes a bracket (12), guide rollers (13), guide plate (17), limiting rollers (15), upright plate (16), and push plate (6); the bracket (12) is fixed on the base (1); the limiting rollers (15) and guide rollers (13) are rotatably mounted on the bracket (12); multiple guide rollers (13) are configured; the axes of the multiple guide rollers (13) are arranged in parallel intervals in the same plane, the distance between the axes of the multiple guide rollers (13) and the base (1) in the vertical plane gradually increases, and the multiple guide rollers (13) are arranged obliquely on the bracket (12); the limiting rollers (15) are placed above the guide rollers (13). The axis is parallel to the axis of the guide roller (13); the guide plate (17) is placed between the guide roller (13) and the limiting roller (15), the lower end face is in rolling contact with the guide roller (13), and the upper end face is in rolling contact with the limiting roller (15); the upright plate (16) is vertically fixed on the upper part of the guide plate (17); the lower clamping plate (2) is fixed on the top of the upright plate (16); the push plate (6) is fixed on one side of the upright plate (16); the lower part of the push plate (6) is provided with a guide groove (9) that is adapted to the rotating shaft (10) of the idler roller (4), the opening of the guide groove (9) is set towards the base (1), and the rotating shaft (10) of the idler roller (4) is movably placed in the guide groove (9).
5. The broken-belt catcher for a belt conveyor as recited in claim 4, wherein The guide assembly (11) also includes a positioning roller (14); the positioning roller (14) is rotatably disposed on the top of the bracket (12); the positioning roller (14) makes rolling contact with the side of the upright plate (16).
6. The broken-belt catcher for a belt conveyor as recited in claim 1, wherein The base (1) is rotatably mounted with a correction roller (4).