Anti-collision device for metal detector
By setting fixed and adjustable supports on the conveyor belt, combined with detection devices and control systems, the height of the metal detector can be adjusted, solving the problem of the metal detector being hit by stones, achieving anti-collision protection for the equipment, extending its service life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
During aggregate production, metal detectors are easily damaged by stones due to excessive stone accumulation, resulting in high repair costs and impacting production progress.
Fixed and adjustable supports are installed on the conveyor belt, and metal detectors are installed. Swing baffles and detection devices are provided on the fixed supports. The height of the metal detectors is adjusted by the detection devices and control system to prevent stone impact.
This effectively prevents metal detectors from being struck by stones, extends their service life, reduces maintenance costs, and ensures production continuity and detection accuracy.
Smart Images
Figure CN224061860U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal detector protection technology, and in particular to a metal detector anti-collision device. Background Technology
[0002] In existing aggregate production processes, stone conveying is a crucial step. However, due to the characteristics of stone and the complexity of the production process, excessive stone accumulation on the conveyor belt is a common problem. When the stone accumulation is too high, the metal detectors installed on the conveyor belt can be damaged by impacts from the stones. As important equipment for detecting metallic impurities in aggregates, the proper functioning of metal detectors is vital for ensuring aggregate quality. Once impacted by stones, the internal components of the detector are easily damaged, such as sensors and circuit boards. Repairing these damaged parts not only incurs high maintenance costs but also affects production schedules. Therefore, effectively preventing metal detectors from being impacted by stones is a critical problem that aggregate production enterprises urgently need to solve. Utility Model Content
[0003] The purpose of this invention is to provide a metal detector anti-collision device that can prevent metal detectors on conveyor belts from being hit by stones, extend the service life of metal detectors, and reduce maintenance costs.
[0004] This utility model provides a metal detector anti-collision device, including a conveyor belt. The conveyor belt is provided with fixed supports and adjustable supports at intervals along the material flow direction. The adjustable supports are provided with height adjustment components and metal detectors. The fixed supports are provided with swing baffles and detection devices for detecting the position of the swing baffles. The detection devices and the height adjustment components are both connected to a control system.
[0005] Furthermore, the adjustable support includes two symmetrically arranged columns, which are respectively fixed on both sides of the conveyor belt. A crossbeam is provided on the top of the column, and both ends of the crossbeam are connected to the column through the height adjustment component. The metal detector is located on the crossbeam.
[0006] Furthermore, the height adjustment component is a cylinder, which is fixed on the side wall of the column away from the conveyor belt, and the telescopic end of the cylinder is fixedly connected to the bottom of the crossbeam.
[0007] Furthermore, the fixed bracket includes a rotating shaft, the two ends of which are rotatably connected to vertical rods. The two vertical rods are respectively located on both sides of the conveyor belt. A connecting rod is fixed on the rotating shaft and connected to the swing baffle. The detection device is provided on one of the vertical rods.
[0008] Furthermore, it includes two detection devices, namely a first detection device and a second detection device. A horizontal bar is provided on the side wall of one of the vertical rods, and the first detection device is provided on the horizontal bar. The second detection device is located on the vertical rod and is flush with the bottom end of the swing baffle. The position of the first detection device is higher than the position of the second detection device.
[0009] Furthermore, the connecting rod is detachably connected to the swing baffle; a U-shaped plug is provided at the end of the connecting rod away from the rotating shaft, and a slot is provided at the top of the swing baffle. The U-shaped plug is inserted into the slot, and the slot and the U-shaped plug are connected by fixing bolts.
[0010] Furthermore, a limiting plate is fixed to the side wall of the vertical rod away from the conveyor belt, and the end of the rotating shaft passes through the vertical rod and is rotatably connected to the limiting plate; the limiting plate is provided with an arc-shaped limiting groove, and a limiting block is fixed to the end of the rotating shaft, and the limiting block slides along the arc-shaped limiting groove.
[0011] Furthermore, the limiting plate is circular, the center of the arc-shaped limiting groove coincides with the center of the limiting plate, and the two ends of the arc-shaped limiting groove are located on the center line of the limiting plate in the vertical direction.
[0012] Furthermore, the swing baffle includes a steel plate, and the steel plate is provided with a rubber protective layer on the outside.
[0013] Furthermore, the detection device is one of a photoelectric sensor, an infrared sensor, or a laser displacement sensor.
[0014] In summary, this utility model has the following advantages:
[0015] The technical solution provided by this utility model involves sequentially arranging fixed supports and adjustable supports at intervals along the material flow direction on the conveyor belt. The metal detector is installed on the adjustable support, and the swing baffle for detecting the height of the stones is installed on the fixed support. When an excessively tall stone hits the swing baffle, the detection device detects the position information of the swing baffle and transmits it to the control system. The control system then activates the height adjustment component to adjust the height of the metal detector, thus preventing the metal detector from being hit by the stones. After the excessively tall stone passes through the metal detector, the control system activates the height adjustment component to restore the metal detector to its original position and maintain normal operation. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the anti-collision device in Embodiment 1 of this utility model;
[0018] Figure 2 This is a schematic diagram showing the disassembled structure of the connecting rod and the swing baffle in Embodiment 2 of this utility model;
[0019] Figure 3 This is a schematic diagram of the connection structure between the rotating shaft and the limiting plate in Embodiment 3 of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1-Conveyor belt; 2-Fixed bracket; 201-Rotating shaft; 2011-Fixed rod; 2012-Limiting block; 202-Vertical rod; 203-Connecting rod; 2031-U-shaped insert; 2032-Second threaded hole; 204-Swing baffle; 2041-Slot; 2042-First threaded hole; 205-Horizontal rod; 206-Fixing bolt; 2061-Nut; 3-Adjustable bracket; 301-Horizontal beam; 302-Column; 303-Cylinder; 304-Bottom reinforcing beam; 4-First detection device; 5-Second detection device; 6-Limiting plate; 601-Arc-shaped limiting groove. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example 1
[0025] A metal detector anti-collision device, such as Figure 1 As shown, the system includes a conveyor belt 1, which is a conventional stone conveyor belt in the prior art. The conveyor belt 1 is provided with fixed supports 2 and adjustable supports 3 at intervals along the stone flow direction. The adjustable supports 3 are provided with height adjustment components and metal detectors. The fixed supports 2 are provided with swing baffles 204 and detection devices for detecting the position of the swing baffles 204. The detection devices and height adjustment components are both connected to the control system.
[0026] The adjustable support 3 includes two symmetrically arranged columns 302, which are fixed to the supports on both sides of the conveyor belt 1. A crossbeam 301 is provided at the top of each column 302, and both ends of the crossbeam 301 are connected to the columns 302 via height adjustment components. A metal detector is located on the crossbeam 301. A bottom reinforcing beam 304 is also provided on the support of the conveyor belt 1, and both ends of the bottom reinforcing beam 304 are fixedly connected to the two columns 302. The height adjustment component is a cylinder 303, which is fixed to the side wall of the column 302 away from the conveyor belt 1. The telescopic end of the cylinder 303 is fixedly connected to the bottom of the crossbeam 301.
[0027] The fixed support 2 includes a rotating shaft 201 and two vertical rods 202. The two ends of the rotating shaft 201 are rotatably connected to the vertical rods 202. The two vertical rods 202 are fixed on the supports on both sides of the conveyor belt 1. Two connecting rods 203 are fixed at the bottom of the rotating shaft 201 (the number of connecting rods 203 can be set according to actual production needs). The axis of the connecting rods 203 is located on the axis of the rotating shaft 201 and is perpendicular to the axis of the rotating shaft 201. The connecting rods 203 are fixedly connected to the swing baffle 204. The length of the swing baffle 204 is the same as the width of the conveyor belt 1.
[0028] One of the vertical rods 202 is equipped with a detection device, including two detection devices: a first detection device 4 and a second detection device 5. A horizontal bar 205 is located on the side wall of the vertical rod 202 near the adjustable bracket 3. The first detection device 4 is mounted on the horizontal bar 205. The second detection device 5 is located on the vertical rod 202, flush with the bottom end of the swing baffle 204. The first detection device 4 is positioned higher than the second detection device 5. When the stone is too high, it pushes the swing baffle 204 to rotate, changing its position. At this time, the first detection device 4 detects the change in the position of the swing baffle 204 and sends a signal to the control system. When the stone height returns to normal, the second detection device 5 detects that the swing baffle 204 has returned to its initial state and sends a signal to the control system.
[0029] The detection device can be a photoelectric sensor, an infrared sensor, or a laser displacement sensor, or other non-contact detection equipment that can detect changes in the position of the swing baffle 204.
[0030] The stability of the adjustable bracket 3 can be further improved. In some harsh working conditions, such as high-speed conveyor belts or heavy stone transportation, swaying may still occur. A diagonal bracing structure can be added between the column 302 and the conveyor belt 1 bracket to further improve its stability and ensure the smoothness of the metal detector during the rising and falling process.
[0031] The working principle of the anti-collision device for the metal detector provided in this embodiment is as follows: When the stone on the conveyor belt 1 is too high and hits the swing baffle 204, the rotation position of the swing baffle 204 changes, the first detection device 4 sends a signal to the control system, and the control system controls the cylinder 303 to move, pushing the crossbeam 301 to rise, so as to avoid the metal detector being hit by the stone; when the stone that is too high passes the metal detector, the swing baffle 204 returns to the initial state (perpendicular to the conveyor belt 1), and the second detection device 5 sends a signal to the control system. When the signal sent by the second detection device 5 stabilizes, the control system controls the cylinder 303 to move after a certain period of time, so that the metal detector returns to its original position under the action of the crossbeam 301.
[0032] Because there is a certain distance between the fixed bracket 2 and the adjustable bracket 3, this distance might cause excessively tall stones to pass completely through the swing baffle 204 without completely passing through the metal detector. Therefore, the control system is set to receive a stable signal from the second detection device 5 at intervals before activating the cylinder 303 to perform a reset action. This ensures that excessively tall stones pass completely through the metal detector, avoiding the situation where stones reset before completely passing through the metal detector due to the distance between the fixed bracket 2 and the adjustable bracket 3, thus ensuring the integrity and accuracy of the detection. Simultaneously, the cylinder 303 can also be operated manually by the staff through the control system.
[0033] Example 2
[0034] A metal detector anti-collision device, the technical solution of this embodiment is basically the same as that of embodiment 1, the difference being that: the swing baffle 204 and the connecting rod 203 in this embodiment are detachably connected.
[0035] The swing baffle 204 includes a steel plate with a rubber protective layer pasted on the outside to protect the steel plate and extend its service life.
[0036] like Figure 2 As shown, the end of the connecting rod 203 away from the rotating shaft 201 is provided with a U-shaped insert 2031, and the top of the swing baffle 204 is provided with a slot 2041. The U-shaped insert 2031 is inserted into the slot 2041. The slot 2041 and the sidewall of the U-shaped insert 2031 are respectively provided with a first threaded hole 2042 and a second threaded hole 2032. The slot 2041 and the U-shaped insert 2031 are connected by a fixing bolt 206. The fixing bolt 206 directly passes through the slot 2041 and the U-shaped insert 2031 and is connected to a nut 2061. The length of the U-shaped insert 2031 is greater than one-third of the width of the swing baffle 204.
[0037] The collision between the stone and the swing baffle 204 can easily cause the swing baffle 204 to deform or wear, reducing the detection accuracy of the detection device. The swing baffle 204 and the connecting rod 203 are detachably connected, which can replace the damaged swing baffle 204 in time and ensure the accuracy of the detection device.
[0038] Example 3
[0039] A metal detector anti-collision device, the technical solution of this embodiment is basically the same as that of embodiment 1 or embodiment 2, the difference is that: this embodiment also provides a limiting component to limit the rotation direction of the rotating shaft 201.
[0040] A through hole is provided on the vertical rod 202, and a bearing is installed in the through hole. The rotating shaft 201 is rotatably connected to the bearing. A circular limiting plate 6 is fixed to the side wall of the vertical rod 202 away from the conveyor belt 1. Figure 3 As shown, the end of the rotating shaft 201 extends out of the limiting plate 6 through the through hole, and the end of the rotating shaft 201 is rotatably connected to the limiting plate 6. The limiting plate 6 is provided with an arc-shaped limiting groove 601, the center of which coincides with the center of the limiting plate 6, and the two ends of the arc-shaped limiting groove 601 are located on the center line of the limiting plate 6 in the vertical direction. A fixing rod 2011 is fixed to the end of the rotating shaft 201, and a limiting block 2012 is fixed on the fixing rod 2011. When an excessively high stone touches the swing baffle 204, the swing baffle 204 rotates, thereby causing the rotating shaft 201 to drive the limiting block 2012 to slide along the arc-shaped limiting groove 601.
[0041] The arc-shaped limiting groove 601 and limiting block 2012 provided in this embodiment can prevent the swing baffle 204 from swinging left and right under the action of gravity and inertia when it returns to its initial position, so that the rotating shaft 201 can only rotate in the direction of stone transportation, and avoid the swing baffle 204 from not touching the excessively high stone during the swing process, thus ensuring the detection accuracy of the detection device.
[0042] 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 the utility model 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 therein. Such 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 this utility model.
Claims
1. A metal detector anti-collision device comprising a conveyor belt (1), characterized in that, The conveying belt (1) is sequentially and spacedly provided with fixed supports (2) and adjustable supports (3) along the material flow direction, the adjustable supports (3) are provided with height adjusting assemblies, and the adjustable supports (3) are provided with metal detectors; the fixed supports (2) are provided with swing baffles (204) and detection devices for detecting positions of the swing baffles (204), and the detection devices and the height adjusting assemblies are connected with a control system; The adjustable supports (3) comprise two upright columns (302) symmetrically arranged, the two upright columns (302) are fixed on two sides of the conveying belt (1) respectively, the upright columns (302) are provided with cross beams (301) at top portions of the upright columns (302), two ends of the cross beams (301) are connected with the upright columns (302) through the height adjusting assemblies respectively, and the metal detectors are located on the cross beams (301). The fixed supports (2) comprise rotating shafts (201), two ends of the rotating shafts (201) are rotationally connected with vertical rods (202), the two vertical rods (202) are located on two sides of the conveying belt (1) respectively, the rotating shafts (201) are fixed with connecting rods (203), the connecting rods (203) are connected with the swing baffles (204), and one of the vertical rods (202) is provided with the detection device; Two detection devices are included, which are a first detection device (4) and a second detection device (5), one of vertical side walls of the vertical rods (202) is provided with a cross rod (205), the first detection device (4) is arranged on the cross rod (205), the second detection device (5) is arranged on the vertical rod (202), the second detection device (5) is flush with a bottom end of the swing baffle (204), and a position of the first detection device (4) is higher than a position of the second detection device (5); A limiting plate (6) is fixed to a vertical side wall of the vertical rod (202) away from the conveying belt (1), and an end portion of the rotating shaft (201) is rotationally connected with the limiting plate (6) through the vertical rod (202); the limiting plate (6) is provided with an arc-shaped limiting groove (601), an end portion of the rotating shaft (201) is fixed with a limiting block (2012), and the limiting block (2012) slides along the arc-shaped limiting groove (601). The limiting plate (6) is circular, a center of the arc-shaped limiting groove (601) coincides with a center of the limiting plate (6), and two ends of the arc-shaped limiting groove (601) are located on a center line of the limiting plate (6) in a vertical direction.
2. The metal detector anti-collision apparatus according to claim 1, wherein, The height adjusting assembly is a pneumatic cylinder (303), the pneumatic cylinder (303) is fixed on a vertical side wall of the upright column (302) away from the conveying belt (1), and a telescopic end of the pneumatic cylinder (303) is fixedly connected with a bottom portion of the cross beam (301).
3. The metal detector anti-collision apparatus of claim 1, wherein, The connecting rod (203) is detachably connected with the swing baffle (204); one end of the connecting rod (203) away from the rotating shaft (201) is provided with a U-shaped plug (2031), the top of the swing baffle (204) is provided with a slot (2041), the U-shaped plug (2031) is inserted into the slot (2041), and the slot (2041) and the U-shaped plug (2031) are connected through a fixing bolt (206).
4. The metal detector anti-collision apparatus of claim 1, wherein, The swing baffle (204) comprises a steel plate, and an outer portion of the steel plate is provided with a rubber protective layer.
5. The metal detector anti-collision apparatus of claim 1, wherein, The detection device is one of a photoelectric sensor, an infrared sensor or a laser displacement sensor.