Material shortage detection equipment for feeding belt conveyor

Abstract

The utility model discloses material shortage detection equipment for a feeding belt conveyor, and mainly relates to the field of material shortage detection of belt conveyors. Comprising a detection frame arranged above a belt conveyor, the detection frame is rotationally connected with a rotating shaft, the lower portion of the rotating shaft is provided with a plurality of detection rods used in cooperation with the belt conveyor, the upper portion of the rotating shaft is provided with a fixing plate, and the length of the detection rods is larger than that of the fixing plate; the detection frame is provided with an alarm and a push switch for controlling the on-off of the alarm, and the trigger rod is slidably connected with a trigger head matched with the push switch in use along the vertical direction. The material shortage detection device has the advantages that the technical problem that the detection accuracy is affected due to the fact that an existing material shortage detection device of the belt conveyor is prone to being polluted by dust can be solved, the position of the trigger rod is controlled through the contact state of the detection rod and materials on the belt conveyor, then the alarm is controlled to be turned on and turned off, material shortage is detected in time, and the detection accuracy is improved. And the material shortage detection is more timely and accurate.

Description

Technical Field

[0001] The utility model relates to the field of material shortage detection for conveyors, in particular to a material shortage detection device for a feeding belt conveyor. Background Art

[0002] In a mixing station, a belt conveyor is used to transport a variety of raw materials to a mixing device, thereby realizing fast and accurate feeding of a variety of raw materials. However, since feeding and mixing is a continuous process, when a raw material on a belt conveyor is missing due to lack of material in the silo or other failures, this will cause a serious lack of a certain component of the raw material in the mixing device, affecting the accuracy of the ratio of various raw materials after mixing, and seriously affecting the quality of the mixture. The existing structure for detecting the lack of raw materials on the belt conveyor is generally an optical sensor. However, due to the relatively dirty environment of the mixing station and the high dust content of the raw materials, the detection head of the optical sensor is easily contaminated, affecting the timeliness and accuracy of the lack of material detection. Utility Model Content

[0003] The purpose of the utility model is to provide a material shortage detection device for a feeding belt conveyor, which can solve the technical problem that the material shortage detection device of the existing belt conveyor is easily contaminated by dust and affects the detection accuracy. The position of the trigger rod is controlled by the contact state between the detection rod and the material on the belt conveyor, and then the opening and closing of the alarm is controlled, thereby realizing timely detection of material shortage, and is not disturbed by the pollution of dust on site, and the detection of material shortage is more timely and accurate.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A material shortage detection device for a feeding belt conveyor comprises a detection frame arranged above the belt conveyor, the detection frame being rotatably connected to a rotating shaft, a plurality of detection rods for cooperating with the belt conveyor being provided at the lower part of the rotating shaft, a fixed plate being provided at the upper part of the rotating shaft, the length of the detection rod being greater than the length of the fixed plate, a trigger rod being connected to the upper edge of the fixed plate for transverse sliding connection, an alarm and a push switch for controlling the opening and closing of the alarm being provided on the detection frame, a trigger head for cooperating with the push switch being connected to the upper edge of the trigger rod for vertical sliding connection.

[0006] Furthermore, a sliding groove is provided on the fixing plate, and the trigger rod is connected in the sliding groove along the transverse sliding direction. An adjusting rod for driving the trigger rod to slide is provided on the fixing plate.

[0007] Furthermore, the adjusting rod is rotatably connected in the sliding groove, and the adjusting rod passes through the trigger rod and is threadedly connected thereto.

[0008] Furthermore, a sliding hole is provided on the trigger rod, and the trigger head is vertically slidably connected in the sliding hole. The trigger head is provided with a positioning column used in conjunction with the trigger rod.

[0009] Furthermore, the positioning column is threadedly connected to the trigger head after passing through the sliding hole, and one end of the positioning column is provided with a locking cap used in conjunction with the trigger rod.

[0010] Furthermore, the alarm includes an alarm light and an alarm bell, and the bottom end of the detection rod is rotatably connected to a roller.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The structure of the utility model is that a detection frame is arranged on the belt conveyor, and a rotating shaft is rotatably connected to the detection frame. The lower part of the rotating shaft is provided with a plurality of detection rods used in conjunction with the belt conveyor, and the upper part of the rotating shaft is provided with a trigger rod. The trigger rod is provided with a trigger head used in conjunction with the press switch of the alarm. Such a structure pushes the detection rod to move forward when the belt conveyor is loaded with material, thereby causing the rotating shaft to rotate, so that the trigger rod on the rotating shaft rotates in a direction away from the press switch. At this time, the alarm does not sound an alarm, and when the material on the belt conveyor is missing, the detection rod will rotate in the opposite direction under the action of gravity, thereby causing the trigger rod on the upper part of the rotating shaft to rotate toward the press switch, until the material shortage reaches a certain level, the trigger head on the trigger rod contacts the press switch, so that the alarm is triggered and the alarm sounds an alarm. Such a structure makes the opening and closing of the alarm completely determined by the thickness of the material on the belt conveyor, and is not affected by the dust of the raw materials on site, and the detection of materials is more timely and accurate.

[0013] 2. A fixed plate is provided on the upper part of the rotating shaft, and the length of the detection rod is greater than that of the fixed plate, so that the total weight of the multiple detection rods is greater than the fixed plate and the trigger rod thereon, so that in the natural state, that is, when there is a shortage of material on the belt conveyor, the detection rod automatically rotates downward under the action of gravity, and the trigger rod automatically rotates toward the press switch, and the trigger rod slides horizontally and is connected to the fixed plate, and the trigger head slides vertically and is connected to the trigger rod. Such a structure can make the trigger head located in different positions by adjusting the horizontal position of the trigger rod and the vertical position of the trigger head, so that the rotating shaft needs to rotate at different angles for the trigger head to contact the press switch, so that the alarm can be triggered when the material on the belt conveyor is at different thicknesses, and then the corresponding amount of material shortage when the alarm is triggered can be adjusted, so that the detection and control of material shortage is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 It is a three-dimensional structural diagram of the utility model.

[0015] Attachment Figure 2 It is a front view of the present utility model.

[0016] Attachment Figure 3 This utility model is attached Figure 2 Cross-sectional view in the AA direction.

[0017] Attachment Figure 4 This utility model is attached Figure 3 Cross-sectional view along the BB direction.

[0018] Attachment Figure 5 This utility model is attached Figure 3 A partial enlarged view of part C in the middle.

[0019] Reference numerals shown in the accompanying drawings:

[0020] 1. Conveyor belt; 2. Detection frame; 3. Rotating shaft; 4. Detection rod; 5. Fixing plate; 6. Trigger rod; 7. Press switch; 8. Trigger head; 9. Slide groove; 10. Adjustment rod; 11. Slide hole; 12. Positioning column; 13. Locking cap; 14. Alarm light; 15. Alarm bell; 16. Roller. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined in this application.

[0022] Reference Figure 1 and Figure 2The present invention is a material shortage detection device for a feeding belt conveyor 1. The main structure includes a detection frame 2 welded or bolted to the top of the belt conveyor 1. The specific detection frame 2 is welded or bolted to the frame of the belt conveyor 1. The detection frame 2 is rotatably connected to a rotating shaft 3 through a bearing. The rotating shaft 3 can rotate freely when there is an external force. The lower part of the rotating shaft 3 is fixed by welding or bolts with multiple detection rods 4 used in conjunction with the belt conveyor 1. The bottom of the detection rod 4 extends to the top of the belt conveyor 1. When there is material on the belt conveyor 1, the material will push the detection rod 4 to move, thereby causing the rotating shaft 3 to rotate until the detection rod 4 is The bottom is located on the top of the material, and when there is no material, the detection rod 4 will cause the rotating shaft 3 to rotate in the opposite direction under the action of gravity until the bottom of the detection rod 4 contacts the belt conveyor 1. The upper part of the rotating shaft 3 is fixed with a fixing plate 5 by welding or bolts. The length of the detection rod 4 is greater than the length of the fixing plate 5. Such a structure makes the total weight of multiple detection rods 4 greater than the total weight of the fixing plate 5 and the components thereon, so that the center of gravity of the entire device is located below the rotating shaft 3, so that the detection rod 4 rotates downward in the natural state. A trigger rod 6 is connected to the fixing plate 5 along the horizontal sliding direction, and an alarm and a control device for turning the alarm on and off are provided on the detection frame 2. The push switch 7 is used to control the on and off of the circuit where the alarm is located. A trigger head 8 used in conjunction with the push switch 7 is vertically slidably connected to the trigger rod 6. When there is a shortage of material on the conveyor belt 1, the detection rod 4 rotates in the opposite direction under the action of gravity, so that the rotating shaft 3 drives the fixed plate 5 and the trigger rod 6 to rotate toward the push switch 7. Until the shortage of material reaches a certain amount, the trigger head 8 contacts the push switch 7, so that the circuit where the alarm is located is connected and an alarm is sounded, thereby realizing timely detection of the shortage of material on the conveyor belt 1, and it is not affected by the dust of the raw materials on site, further ensuring the accuracy of the shortage detection. If the trigger head 8 wants to It contacts the push switch 7, and its movement path takes the center of the rotating shaft 3 as the center of the circle and the length from the rotating shaft 3 to the push switch 7 as the radius. Therefore, in order to ensure that the trigger head 8 accurately contacts the push switch 7, it must be located on this movement path. Therefore, when it is necessary to adjust the amount of material shortage that triggers the alarm, the trigger rod 6 can be slid horizontally and the trigger head 8 can be slid vertically so that the trigger head 8 is located at different positions on the movement path, thereby making the rotating shaft 3 and the detection rod 4 need to be rotated at different angles to trigger the alarm, thereby achieving coordination with different material thicknesses on the belt conveyor 1, further improving the accuracy and adaptability of material shortage detection.

[0023] Preferably, a slide groove 9 is provided on the fixed plate 5, and the trigger rod 6 is connected in the slide groove 9 along the horizontal sliding direction. An adjusting rod 10 is provided on the fixed plate 5 to drive the trigger rod 6 to slide. The adjusting rod 10 is used to slide and adjust the position of the trigger rod 6 in the slide groove 9, so that the sliding control of the trigger rod 6 is more convenient and stable.

[0024] Preferably, refer to Figure 3and Figure 5 The adjusting rod 10 is rotatably connected in the slide groove 9 through a bearing. The adjusting rod 10 passes through the trigger rod 6 and is threadedly connected thereto. Such a structure drives the trigger rod 6 to slide horizontally in the slide groove 9 under the action of the threaded connection when the adjusting rod 10 is rotated, and finally the threaded connection is used to keep the trigger rod 6 in the position after sliding, which makes it easier to adjust the position of the trigger rod 6 and makes the adjusted position of the trigger rod 6 more secure.

[0025] Preferably, refer to Figure 4 The trigger rod 6 is provided with a sliding hole 11, and the trigger head 8 is vertically slidably connected in the sliding hole 11. Specifically, multiple sliders slidably connected to the sliding hole 11 are welded or bolted on the side of the trigger head 8 to improve the firmness of the vertical sliding structure of the trigger head 8. The trigger head 8 is provided with a positioning column 12 used in conjunction with the trigger rod 6. The positioning column 12 is used to limit the position of the trigger head 8 after sliding, thereby ensuring accurate contact between the trigger head 8 and the press switch 7, thereby improving the accuracy of material shortage detection.

[0026] Preferably, the positioning column 12 is threadedly connected to the trigger head 8 after passing through the sliding hole 11. Specifically, a threaded hole is opened inside the trigger head 8, and the positioning column 12 is threadedly connected in the threaded hole. One end of the positioning column 12 is provided with a locking cap 13 used to cooperate with the trigger rod 6, and the locking cap 13 contacts one side of the trigger rod 6. With this structure, the positioning column 12 is rotated after the trigger head 8 slides along the sliding hole 11. Under the action of the threaded connection, the positioning column 12 rotates forward toward the threaded hole, so that the locking cap 13 at the end of the positioning column 12 contacts and clamps the trigger rod 6, thereby clamping the trigger head 8 on the trigger rod 6. The structure is simple, and the limiting operation of the trigger head 8 is more convenient and efficient.

[0027] Preferably, the alarm includes an alarm light 14 and an alarm bell 15, which improve the effect of the alarm and make the alarm easier to detect. The bottom end of the detection rod 4 is rotatably connected to the roller 16 through a bearing, so that when the material pushes the detection rod 4 to rotate, the two move relative to each other through rolling, making the relative movement friction between the two smaller, avoiding the detection rod 4 from getting stuck, and further improving the smoothness of the operation of the material shortage detection device.

[0028] When the material on the conveyor belt 1 is insufficient, the detection rod 4 will rotate in the opposite direction under the action of gravity, and the triggering rod 6 on the upper part of the rotating shaft 3 will rotate toward the pressing switch 7. When the material is insufficient to a certain extent, the triggering head 8 on the triggering rod 6 will contact the pressing switch 7, so that the alarm is triggered and the alarm sounds. With this structure, the opening and closing of the alarm is completely determined by the thickness of the material on the conveyor belt 1. The cam 6 is pressed against the top of the conveyor belt 1 and the cam 6 is pressed against the bottom of the conveyor belt 1, so that the cam 6 is pressed against the top of the conveyor belt 1 and the cam 6 is pressed against the bottom of the conveyor belt 1.

Claims

1. A material shortage detection device for a feeding belt conveyor, comprising a detection frame (2) arranged above the belt conveyor (1), characterized in that: The detection frame (2) is rotatably connected to a rotating shaft (3), and a plurality of detection rods (4) used in conjunction with the belt conveyor (1) are provided at the lower part of the rotating shaft (3). A fixing plate (5) is provided at the upper part of the rotating shaft (3), and the length of the detection rod (4) is greater than the length of the fixing plate (5). A trigger rod (6) is connected to the fixing plate (5) in a transverse sliding manner. An alarm and a press switch (7) for controlling the opening and closing of the alarm are provided on the detection frame (2), and a trigger head (8) used in conjunction with the press switch (7) is connected to the trigger rod (6) in a vertical sliding manner.

2. The material shortage detection device for a feeding belt conveyor according to claim 1, characterized in that: The fixing plate (5) is provided with a sliding groove (9), the trigger rod (6) is connected in the sliding groove (9) in a transverse sliding manner, and the fixing plate (5) is provided with an adjusting rod (10) for driving the trigger rod (6) to slide.

3. The material shortage detection device for a feeding belt conveyor according to claim 2, characterized in that: The regulating rod (10) is rotatably connected in the sliding groove (9), and the regulating rod (10) passes through the trigger rod (6) and is threadedly connected thereto.

4. The material shortage detection device for a feeding belt conveyor according to claim 1, characterized in that: The trigger rod (6) is provided with a sliding hole (11), the trigger head (8) is vertically slidably connected in the sliding hole (11), and the trigger head (8) is provided with a positioning column (12) used in conjunction with the trigger rod (6).

5. The material shortage detection device for a feeding belt conveyor according to claim 4, characterized in that: The positioning column (12) passes through the sliding hole (11) and is threadedly connected to the trigger head (8). One end of the positioning column (12) is provided with a locking cap (13) used in conjunction with the trigger rod (6).

6. The material shortage detection device for a feeding belt conveyor according to claim 1, characterized in that: The alarm device comprises an alarm light (14) and an alarm bell (15); the bottom end of the detection rod (4) is rotatably connected to a roller (16).

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