Automatic stop device for return ore belt conveyor
Patent Information
- Application Number
- CN202522339203.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0003]由于返矿皮带机位于支撑平台的上层，皮带机位于支撑平台的下层，返矿皮带机上的返矿通过溜槽掉落至皮带机上，在运行过程中，当位于下层的皮带机运行异常，溜槽出现堵料时，料会在溜槽内堆积，逐渐漫出溜槽至罩壳内的区域，堆积在罩壳内，如果返矿皮带机不能及时停机，当罩壳内的料堆积至返矿皮带机的托辊处时，会引起火灾，造成生产事故
当溜槽堵塞时，返矿皮带机的进程皮带持续输送物料，物料自出料端掉落并在溜槽内堆积，当堆积的物料向上漫出并漫至接料斗内时，接料斗失去平衡，因重力作用，向下转动，第二连接杆向上转动，第二连接杆的右端不再与接近开关对齐，接近开关触发信号，警示灯灭，并传递信号至返矿皮带机的电源进而断电，自动停止返矿皮带机，避免危险。
Smart Images
Figure CN224899839U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to chute blockage treatment technology, specifically to an automatic shutdown device for a return ore conveyor belt. Background Technology
[0002] The return ore conveyor belt is used to return non-compliant raw materials from the blast furnace to the sintering workshop. The return ore conveyor belt includes a circular belt formed by the forward conveyor belt and the return conveyor belt, as well as a belt frame. The belt frame is fixed to a support platform. One end of the circular belt is the feeding end, and the other end is the discharge end. The discharge end is located inside a casing, which is fixed to the support platform. The support platform has a chute located directly below the discharge end. After the return ore moves from the feeding end to the discharge end, it falls into the chute and then into the conveyor belt below the chute. The conveyor belt then transports the ore to the sintering workshop for secondary sintering.
[0003] Because the return ore conveyor belt is located on the upper level of the support platform and the conveyor belt is located on the lower level of the support platform, the return ore on the return ore conveyor belt falls onto the conveyor belt via a chute. During operation, if the conveyor belt located on the lower level malfunctions and the chute becomes blocked, the material will accumulate in the chute and gradually overflow into the area inside the cover. If the return ore conveyor belt cannot be stopped in time, when the material inside the cover accumulates to the idler rollers of the return ore conveyor belt, it will cause a fire and result in a production accident.
[0004] Based on this, an automatic shutdown device was designed that can automatically stop the return conveyor belt when the material inside the casing accumulates to a certain amount, thus avoiding danger. Summary of the Invention
[0005] This utility model provides an automatic shutdown device for a return ore conveyor belt. When the chute is blocked, the conveyor belt continues to transport material. The material falls from the discharge end and accumulates in the chute. When the accumulated material overflows upward and into the receiving hopper, the receiving hopper loses its balance and rotates downward due to gravity. The second connecting rod rotates upward, and the right end of the second connecting rod is no longer aligned with the proximity switch. The proximity switch triggers a signal, the warning light goes out, and a signal is transmitted to the power supply of the return ore conveyor belt, thereby cutting off the power and automatically stopping the return ore conveyor belt to avoid danger.
[0006] The technical solution adopted by this utility model is: an automatic shutdown device for a return ore conveyor belt, including a vertical rod, on which a rotating shaft is rotatably mounted with its axial direction in the left and right directions. The part of the rotating shaft located on the left side of the vertical rod is a first connecting section, and the part located on the right side of the vertical rod is a second connecting section. A receiving hopper is fixedly mounted on the first connecting section and is located in front of the first connecting section. A first connecting rod is fixedly mounted on the second connecting section and extends backward from the second connecting section. A second connecting rod is fixedly mounted on the first connecting rod and extends to the right from the first connecting rod. A column is provided at intervals on the right end of the second connecting rod, and a proximity switch is fixedly mounted on the column. The proximity switch is aligned with the right end of the second connecting rod and is electrically connected to the power supply of the return ore conveyor belt.
[0007] Based on the above scheme, as a preferred option, the proximity switch is electrically connected to the warning light.
[0008] Based on the above scheme, as a preferred embodiment, when the right end of the second connecting rod is aligned with the proximity switch, the receiving hopper tilts downward in a back-to-forward direction, and there is a gap between the bottom of the receiving hopper and the support platform.
[0009] Based on the above scheme, as a preferred option, the rear end of the first connecting rod is an inclined section that slopes downwards, and a counterweight is fixedly installed on the inclined section.
[0010] Based on the above scheme, as a preferred option, the rotating shaft and the vertical rod are rotatably connected by a bearing.
[0011] Based on the above scheme, as a preferred option, the bearing is a thrust ball bearing, and there are two of them, one on each side of the vertical rod.
[0012] Based on the above scheme, as a preferred option, the shaft ring of the thrust ball bearing is fixedly connected to the rotating shaft, and the seat ring is fixedly connected to the vertical rod.
[0013] Based on the above scheme, as a preferred option, the automatic shutdown device is applied to the discharge end of the return ore conveyor belt.
[0014] The present invention has the following technical advantages: When the chute is blocked, the conveyor belt of the return ore conveyor continues to transport material. The material falls from the discharge end and accumulates in the chute. When the accumulated material overflows upward and into the receiving hopper, the receiving hopper loses its balance and rotates downward due to gravity. The second connecting rod rotates upward, and the right end of the second connecting rod is no longer aligned with the proximity switch. The proximity switch triggers a signal, the warning light goes out, and a signal is transmitted to the power supply of the return ore conveyor to cut off the power and automatically stop the return ore conveyor to avoid danger.
[0015] This utility model has a simple structure and low cost. Its core components are mainly a proximity switch and several rods (vertical rod, rotating rod, first connecting rod, and second connecting rod).
[0016] Counterweights are installed on the rods to increase the overall weight of the rods while ensuring balance, thereby improving the stability of the entire device in a balanced state and preventing the automatic shutdown device from shaking due to vibration during the operation of the return ore conveyor belt. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure after the belt is removed. Detailed Implementation
[0018] To further understand this utility model, the following detailed description is provided in conjunction with embodiments. However, this is not intended to limit the scope of the utility model. It should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, and not for limiting the scope of the claims. Any equivalent substitutions made in the art based on the disclosure of this utility model are within the protection scope of this utility model.
[0019] like Figure 1-2 As shown, an automatic shutdown device for a return ore conveyor belt is applied at the discharge end of the return ore conveyor belt.
[0020] The return ore conveyor belt includes a ring belt formed by the infeed belt 1 and the return belt 2, as well as a belt frame 3. The belt frame 3 is fixed on a support platform (supported by columns, which are not shown in the figure). One end of the ring belt is the feeding end 5, and the other end is the discharge end 4 (the distance between the discharge end and the feeding end is very long). The discharge end is located inside the cover 6, which is fixed on the support platform. The support platform has a chute 7, which is located directly below the discharge end. After the return ore moves from the feeding end to the discharge end, it falls into the chute and then into the conveyor belt below the chute. The conveyor belt then transports the ore to the sintering workshop for secondary sintering.
[0021] The automatic shutdown device includes a vertical rod 8, with the length of the return ore conveyor belt as the front-to-back direction and the width as the left-to-right direction. A rotating shaft 9 is rotatably mounted on the vertical rod, with its axial direction in the left-to-right direction. The part of the rotating shaft located on the left side of the vertical rod is the first connecting section 10, and the part located on the right side of the vertical rod is the second connecting section 11.
[0022] A receiving hopper 12 is fixedly installed on the first connecting section, located at the front of the first connecting section. A first connecting rod 13 is fixedly installed on the second connecting section, extending rearward from the second connecting section. A second connecting rod 14 is fixedly installed on the first connecting rod, extending to the right from the first connecting rod. There is a distance A between the axis of the second connecting rod and the axis of the rotating shaft, where A is greater than 0.
[0023] A column 15 is provided at a distance from the right end of the second connecting rod. A proximity switch 16 is fixedly installed on the column. The proximity switch is aligned with the right end of the second connecting rod and is electrically connected to the power supply of the return ore conveyor belt.
[0024] The proximity switch is electrically connected to the warning light.
[0025] In operation, that is, when the return ore conveyor is running, the right end of the second connecting rod is aligned with the proximity switch in the left-right direction. When the chute is blocked, the conveyor belt of the return ore conveyor continues to transport materials. The materials fall from the discharge end and accumulate in the chute. When the accumulated materials overflow upward and into the receiving hopper, the receiving hopper loses its balance and rotates downward due to gravity. The second connecting rod rotates upward, and the right end of the second connecting rod is no longer aligned with the proximity switch. The proximity switch triggers a signal, the warning light goes out, and a signal is transmitted to the power supply of the return ore conveyor to cut off the power.
[0026] When the chute is blocked, the material piles up in the casing in a mound shape. Therefore, when the right end of the second connecting rod is aligned with the proximity switch, the receiving hopper tilts downward in the direction from back to front, and there is a gap between the bottom of the receiving hopper and the support platform to meet the need for it to flip downward.
[0027] Since the receiving hopper, rotating shaft, first connecting rod, and second connecting rod are all made of metal, and the receiving hopper is relatively heavy, the rear end of the first connecting rod is an inclined section that slopes downwards to maintain balance, and a counterweight is fixedly installed on this inclined section using a nut.
[0028] The rotating shaft and the vertical rod are connected by bearings to form a rotational fit. Specifically, the bearings are thrust ball bearings. The shaft ring of the thrust ball bearing is fixedly connected to the rotating shaft, and the seat ring is fixedly connected to the vertical rod. There are two thrust ball bearings, one on each side of the vertical rod. Since the vertical rod is a tubular component, using thrust ball bearings makes it easier to install the rotating shaft.
[0029] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that the above description is for illustrative purposes only and does not constitute any limitation on the scope of this utility model. Those skilled in the art can make substitutions or changes to certain features of this utility model without departing from the spirit and scope of this utility model, and such substitutions or changes should be considered to fall within the protection scope of the claims of this utility model.
Claims
1. An automatic shutdown device for a return ore conveyor belt, characterized in that, The system includes a vertical rod, on which a rotating shaft is rotatably mounted. The portion of the vertical rod with the rotating shaft on the left side is the first connecting section, and the portion on the right side is the second connecting section. A receiving hopper is fixedly mounted on the first connecting section, located in front of the first connecting section. A first connecting rod is fixedly mounted on the second connecting section, extending backward from the second connecting section. A second connecting rod is fixedly mounted on the first connecting rod, extending to the right from the first connecting rod. A column is spaced at the right end of the second connecting rod, and a proximity switch is fixedly mounted on the column. The proximity switch is aligned with the right end of the second connecting rod and is electrically connected to the power supply of the return ore conveyor belt.
2. The automatic shutdown device for the return ore conveyor belt as described in claim 1, characterized in that, The proximity switch is electrically connected to the warning light.
3. The automatic shutdown device for the return ore conveyor belt as described in claim 1, characterized in that, When the right end of the second connecting rod is aligned with the proximity switch, the receiving hopper tilts downward in a back-to-forward direction, and there is a gap between the bottom of the receiving hopper and the support platform.
4. The automatic shutdown device for the return ore conveyor belt as described in claim 1, characterized in that, The rear end of the first connecting rod is an inclined section that slopes downwards, and a counterweight is fixedly installed on this inclined section.
5. The automatic shutdown device for the return ore conveyor belt as described in claim 1, characterized in that, The rotating shaft and the vertical rod are rotatably connected by bearings.
6. The automatic shutdown device for the return ore conveyor belt as described in claim 5, characterized in that, The bearings are thrust ball bearings, and there are two of them, one on each side of the vertical rod.
7. The automatic shutdown device for the return ore conveyor belt as described in claim 6, characterized in that, The shaft ring of the thrust ball bearing is fixedly connected to the rotating shaft, and the seat ring is fixedly connected to the vertical rod.
8. The automatic shutdown device for the return ore conveyor belt as described in claim 1, characterized in that, Automatic shutdown devices are used at the discharge end of return ore conveyor belts.