Optical fiber passive anti-collision material blocking sensor
By designing a fiber optic passive anti-collision material blockage sensor, and utilizing a flap and buffer spring structure, material blockage in the chute can be detected in a timely manner, solving the problem of material blockage affecting production and ensuring the reliability of the equipment and the continuity of production.
Patent Information
- Application Number
- CN202520722422.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-17
AI Technical Summary
Existing chutes are prone to material blockage during material transport, and blockages cannot be detected in a timely manner, affecting production continuity.
A passive fiber optic anti-collision material blockage sensor is designed. It utilizes a combination structure of a flap and a buffer spring. The flap rotates to push the trigger rod of the optical switch, thereby realizing timely detection of material blockage. The buffer spring prevents the flap from directly impacting the optical switch.
It enables timely detection of chute blockage and prevents damage to the optical switch, ensuring production continuity and equipment reliability.
Smart Images
Figure CN223935638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material conveying technology, and in particular to material blockage in chute feeding, specifically a fiber optic passive anti-collision material blockage sensor. Background Technology
[0002] In material conveying, chutes are typically used to narrow the material drop range for better control of the material flow. For example, in a feeding system, a feed chute is installed to transport materials to the chute, from where they fall onto conveyor belts, screw conveyors, or other conveying equipment. By using a feed chute, the material is buffered and temporarily stored, ensuring production continuity. In a discharge system, materials to be discharged are typically transported to a discharge chute. The constricting shape of the discharge chute narrows the material flow range, facilitating material collection or bagging. It also provides temporary storage, allowing time for bag changes or workstation switching.
[0003] However, since chutes are usually cone-shaped structures that are wider at the top and narrower at the bottom, material blockage is inevitable. If the blockage is not detected in time, it will become more and more serious, affecting normal production. Utility Model Content
[0004] This invention addresses the shortcomings of existing technologies by providing a fiber optic passive anti-collision material blockage sensor, which can not only detect material blockage in the chute in a timely manner, but also prevent materials from directly impacting the trigger rod of the optical switch.
[0005] This utility model is achieved through the following technical solution: a fiber optic passive anti-collision and material blockage sensor is provided, including a mounting plate with a leakage hole, and a flap located on one side of the mounting plate and blocking the leakage hole. The flap is hinged to the mounting plate, and a support frame is fixedly connected to the mounting plate. An optical switch and a buffer spring are installed on the support frame on the side of the flap away from the mounting plate. The spring force of the buffer spring is set to drive the flap to rotate toward the mounting plate, and the trigger rod of the optical switch extends toward the flap.
[0006] In use, the mounting plate is fixed to the side wall of the chute. The chute side wall has material passage holes opposite to the leakage holes. When there is no blockage in the chute, the flap is pressed tightly against the mounting plate by the buffer spring to prevent leakage. When blockage occurs, the increased material in the chute increases the pressure on the flap, overcoming the spring force of the buffer spring, causing the flap to rotate. This pushes the trigger rod of the photoelectric switch, triggering it and facilitating timely detection of blockages. The buffer spring also cushions the impact of the flap's rotation, preventing direct impact on the trigger rod of the photoelectric switch.
[0007] As an optimization, a guide sleeve is fixedly mounted on the support frame. A guide rod extending to the flap is inserted through the inner hole of the guide sleeve. One end of the guide rod is fixedly fitted with a boss that presses against the flap. The buffer spring is sleeved on the guide rod and located between the boss and the guide sleeve. This optimized solution provides support and guidance for the guide rod by setting the guide sleeve, and facilitates the application of force by the buffer spring to the guide rod by setting the boss.
[0008] As an optimization, the buffer spring is surrounded by a retractable dust cover I. One end of the retractable dust cover I is fixedly connected to the boss, and the other end is fixedly connected to the guide sleeve. This optimization scheme, by setting the retractable dust cover I, protects the buffer spring and the guide rod, preventing dust or stones from falling in and affecting the normal operation of the guide rod and the buffer spring.
[0009] As an optimization, a sealing box is also fixed on the support frame, and the optical switch is located inside the sealing box. A guide sleeve is fixedly installed on the side wall of the sealing box facing the flip plate. The trigger rod of the optical switch passes through the inner hole of the guide sleeve, and an anti-collision platform is fixed at the end of the trigger rod of the optical switch near the flip plate. This optimized solution protects the optical switch from damage by setting up a sealing box, provides support and guidance for the trigger rod of the optical switch by setting up a guide sleeve to ensure the reliability of triggering the optical switch, and prevents the trigger rod from directly contacting the flip plate by setting up an anti-collision platform, thereby reducing the wear of the trigger rod.
[0010] As an optimization, a retractable dustproof sleeve II is provided around the end of the optical switch's trigger rod extending towards the flap and out of the guide sleeve. One end of the retractable dustproof sleeve II is fixedly connected to the anti-collision platform, and the other end is fixedly connected to the guide sleeve. This optimization scheme protects the optical switch's trigger rod by setting the retractable dustproof sleeve II, preventing dust and other contaminants from affecting the flexibility of the trigger rod's movement.
[0011] As an optimization, a limiting beam is fixed on the support frame on the side of the flip plate away from the mounting plate. The distance between the limiting beam and the flip plate is greater than the distance between the anti-collision platform and the flip plate, but less than the distance between the anti-collision platform and the guide sleeve. This optimization scheme, by setting the limiting beam, limits the rotation of the flip plate to its extreme position, preventing the flip plate from rotating too much and damaging the optical switch, and preventing material leakage.
[0012] The beneficial effects of this utility model are as follows: taking advantage of the increased gravity when the material is blocked in the chute, the flap is used as a receiving component to receive the gravity of the material. The rotation of the flap pushes the trigger rod of the light switch, triggering the light switch, thereby facilitating the timely sending of signals to the main control unit and timely detection of material blockage. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a side view of the present invention;
[0015] Figure 3 for Figure 2 Enlarged view of a portion of the image;
[0016] Figure 4 This is a schematic diagram of the support frame and mounting plate structure;
[0017] Figure 5 for Figure 4 Side view;
[0018] Figure 6 for Figure 4 Top view;
[0019] Figure 7 This is a schematic diagram of the usage state of this utility model;
[0020] As shown in the figure:
[0021] 1. Mounting plate, 2. Horizontal axis, 3. Flip plate, 4. Sealing box, 5. Light switch, 6. Support frame, 7. Guide rod, 8. Material leakage hole, 9. Anti-collision platform, 10. Telescopic dust cover II, 11. Trigger rod, 12. Guide sleeve, 13. Boss, 14. Guide sleeve, 15. Limiting beam, 16. Telescopic dust cover I, 17. Buffer spring. Detailed Implementation
[0022] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0023] like Figures 1-3 The illustrated fiber optic passive anti-collision material blockage sensor includes a mounting plate 1 with a leakage hole 8, and a flap 3 located on one side of the mounting plate 1 and blocking the leakage hole. The upper end of the flap 3 is hinged to the mounting plate 1 via a horizontal shaft 2. Both the mounting plate and the flap 3 are fixed with ear plates for the horizontal shaft 2 to pass through. In this embodiment, the flap 3 is located on the outer side of the mounting plate and can rotate and swing outward. The area of the flap 3 is larger than the area of the leakage hole. The flap 3 is made of thick steel plate, which effectively prevents damage to the sensor from material impact and greatly improves the sensor's lifespan.
[0024] A support frame 6 is fixedly attached to the mounting plate 1. A light switch 5 and a buffer spring 17 are mounted on the support frame 6, located on the side of the flip plate 3 furthest from the mounting plate. Both the buffer spring and the light switch are located on the outer side of the flip plate. The light switch is existing technology; its trigger rod moves to achieve on / off switching, and its internal structure will not be described in detail. The spring force of the buffer spring 17 is set to drive the flip plate 3 to rotate towards the mounting plate 1. The trigger rod of the light switch extends towards the flip plate. When no material blockage occurs, the flip plate, under the action of the buffer spring, presses tightly against the outer surface of the mounting plate, sealing the leakage hole and preventing material leakage.
[0025] A guide sleeve 14 is fixedly mounted on the support frame 6. The guide sleeve is welded to the support frame. A guide rod 7 extending to the flip plate passes through the inner hole of the guide sleeve 14. One end of the guide rod is fixedly fitted with a boss 13 that abuts against the side of the flip plate away from the mounting plate. The buffer spring 17 is sleeved on the guide rod 7 and located between the boss 13 and the guide sleeve 14. Specifically, one end of the buffer spring abuts against the boss, and the other end abuts against the guide sleeve. The buffer spring is located on the side of the optical switch trigger rod away from the hinge point between the flip plate and the mounting plate. In this embodiment, the guide rod is parallel to the optical switch trigger rod and is located below the optical switch trigger rod. When the flip plate is close to the mounting plate, the guide rod is perpendicular to the flip plate, and the boss abuts against the lower part of the outer side of the flip plate. When the flip plate is impacted by material and rotates outward, it pushes the guide rod outward a certain distance, and then the flip plate pushes the anti-collision platform of the optical switch trigger rod. Both the anti-collision platform and the boss can slide relative to the flip plate to avoid hindering the outward rotation of the flip plate.
[0026] A sealing box 4 is also fixed on the support frame. The optical switch 5 is located inside the sealing box 4. A guide sleeve 12 is fixedly installed on the side wall of the sealing box facing the flip plate. The trigger rod 11 of the optical switch passes through the inner hole of the guide sleeve 12, and an anti-collision platform 9 is fixed at the end of the trigger rod of the optical switch near the flip plate. A door is provided on the side wall of the sealing box away from the flip plate. The door is fixedly installed by bolts for easy opening and maintenance.
[0027] The buffer spring 17 is covered by a retractable dust cover I 16. One end of the retractable dust cover I 16 is fixed to the boss 13, and the other end is fixed to the guide sleeve 14. In this embodiment, the retractable dust cover I 16 is cylindrical, with one end fixed to the boss and the other end fixed to the guide sleeve.
[0028] A retractable dust cover II10 covers one end of the trigger rod of the optical switch that extends outward toward the flap. One end of the retractable dust cover II10 is fixedly connected to the anti-collision platform, and the other end is fixedly connected to the guide sleeve. In this embodiment, the retractable dust cover II10 is also cylindrical, with one end fixedly fitted onto the anti-collision platform and the other end fixedly fitted onto the guide sleeve. Both the retractable dust cover I16 and the retractable dust cover II10 can be made of dustproof cloth or rubber, which can both prevent dust and allow for retraction to meet the movement requirements of the guide rod and the trigger rod of the optical switch.
[0029] The support frame is also fixed with a limiting beam 15 located on the side of the flap away from the mounting plate and extending toward the flap. Along the opening direction of the flap, the distance between the limiting beam 15 and the flap 3 is greater than the distance between the anti-collision platform and the flap, but less than the distance between the anti-collision platform and the guide sleeve. This allows the flap to be buffered by the buffer spring when it is opened, and then the flap contacts the anti-collision platform, preventing the flap from directly impacting the light switch trigger rod and damaging the light switch.
[0030] Specifically, such as Figure 7As shown, in this embodiment, the fiber optic passive anti-collision material blockage sensor is electrically connected to the main control system during use. The mounting plate is fixed to the outer wall of the chute for easy maintenance and installation. A material passage hole is opened on the side wall of the chute, corresponding to the leakage hole on the mounting plate. The size of the material passage hole is not smaller than the size of the leakage hole on the mounting plate. When particulate material blocks the chute, the pressure of the particulate material on the flap increases, thereby overcoming the elastic force of the buffer spring and forcing the flap 3 to rotate outward around the horizontal 2. This pushes the trigger rod of the optical switch to move, triggering the optical switch 5. The optical switch 5 is then disconnected, and a signal is transmitted to the main control system. The main control system outputs a corresponding signal to take unblocking measures. At this time, the flap rotates to contact the limiting beam 15, which prevents the flap from continuing to rotate. The maximum opening of the flap is less than the particle size of the particulate material to prevent material leakage when the flap is opened. After the chute is cleared, the buffer spring pushes the guide rod and the flap back to their original positions. The trigger rod of the optical switch loses external force and returns to its initial position. The optical switch is then turned on, and a signal is transmitted to the main control system, which outputs a corresponding signal.
[0031] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.
Claims
1. A fiber optic passive anti-collision and anti-blocking sensor, characterized in that: The device includes a mounting plate (1) with a material leakage hole (8) and a flap (3) located on one side of the mounting plate (1) and blocking the material leakage hole. The flap (3) is hinged to the mounting plate (1). A support frame (6) is fixedly connected to the mounting plate (1). A light switch (5) and a buffer spring (17) are installed on the support frame (6) on the side of the flap (3) away from the mounting plate (1). The spring force of the buffer spring (17) is set to drive the flap (3) to rotate toward the mounting plate (1). The trigger rod of the light switch (5) extends toward the flap (3).
2. The fiber optic passive anti-collision and material blocking sensor according to claim 1, characterized in that: The support frame (6) is fixed with a guide sleeve (14), and a guide rod (7) extending to the flap (3) is passed through the inner hole of the guide sleeve (14). One end of the guide rod (7) is fixed with a boss (13) that reaches the flap (3). The buffer spring (17) is sleeved on the guide rod (7) and located between the boss (13) and the guide sleeve (14).
3. The fiber optic passive anti-collision and material blocking sensor according to claim 2, characterized in that: The buffer spring (17) is covered by a retractable dust cover I (16), one end of which is fixedly connected to the boss (13) and the other end is fixedly connected to the guide sleeve (14).
4. The fiber optic passive anti-collision and material blocking sensor according to claim 1, characterized in that: A sealing box (4) is also fixed on the support frame. The optical switch (5) is located inside the sealing box (4). A guide sleeve (12) is fixed on the side wall of the sealing box (4) facing the flip plate (3). The trigger rod (11) of the optical switch (5) passes through the inner hole of the guide sleeve (12), and an anti-collision platform (9) is fixed at the end of the trigger rod (11) of the optical switch (5) near the flip plate (3).
5. The fiber optic passive anti-collision and material blocking sensor according to claim 4, characterized in that: The trigger rod (11) of the light switch extends toward the flip plate (3) and is covered by a retractable dust cover II (10). One end of the retractable dust cover II (10) is fixed to the anti-collision platform (9), and the other end is fixed to the guide sleeve (12).
6. The fiber optic passive anti-collision and anti-blocking sensor according to claim 4, characterized in that: The support frame (6) is fixed with a limiting beam (15) located on the side of the flip plate (3) away from the mounting plate (1). The distance between the limiting beam (15) and the flip plate (3) is greater than the distance between the anti-collision platform (9) and the flip plate (3), and less than the distance between the anti-collision platform (9) and the guide sleeve (12).