A material pit cover position detection system

Abstract

This utility model discloses a pit cover position detection system, specifically relating to the field of hazardous waste treatment technology. It includes a pit body, a wall column body, and a cover body. The wall column body is longitudinally installed on one side above the pit body. The cover body is hinged to the edge of the pit body. A winding mechanism is provided on the side of the wall column body away from the pit body. A first position detection mechanism is provided at the output end of the winding mechanism, and a second position detection mechanism is provided on the side end face of the wall column body near the pit body. The winding mechanism drives the cover body to close relative to the pit body. The first and second position detection mechanisms monitor the closed position of the cover body in real time. The system is simple to implement, reduces equipment failure rate, and changes the position detection from a contact-type limit switch to a non-contact proximity switch, reducing equipment wear. Furthermore, inspection, maintenance, and treatment are all performed outside the pit, avoiding the high risks of working inside the pit and reducing manual labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of hazardous waste treatment technology, and more specifically, to a material pit cover position detection system. Background Technology

[0002] In hazardous waste disposal, a storage pit is a closed structure specifically used for storing, mixing, and pre-treating hazardous waste. A storage pit cover is a protective or functional device that covers various types of storage pits, mainly used for safety protection, environmental protection, equipment maintenance, and operational support.

[0003] For example, application number CN202020948059.4 discloses a novel protective cover for waste pits. By installing a cover above the hazardous waste pit, and having the cover move within a groove in the wall via a first rotating shaft, the pit can be promptly closed in the event of a fire, preventing the fire from spreading and causing harm to the factory or workers. Simultaneously, connecting an external power source to a motor, along with a connecting rope, allows the cover to move. Furthermore, when the cover is retracted into the groove, it does not interfere with other equipment's work of grabbing materials from inside the pit, enhancing the cover's practicality. The detection of the pit cover's position is an industrial safety feature. The limit switch is a core component in the overall system of production efficiency and environmental protection. In existing technologies, the limit switch is usually directly installed on the mechanical movement trajectory of the cover plate or near the components linked to the cover plate to ensure that the switch action can be quickly triggered when the state of the cover plate changes. This results in the limit switch being close to the material pit. However, because the material inside the material pit has a complex composition, and the recycled hazardous waste is all put into and grabbed in the material pit, the environment is harsh. Electronic components such as switches and conduits are extremely prone to corrosion and damage. Corroded circuits are prone to short circuits and fires. In addition, due to the flammable, corrosive, toxic and harmful risk factors in the material pit, the conduits and switches inside are difficult to repair manually, and the safety risks are extremely high.

[0004] Therefore, a material pit cover plate position detection system is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a material pit cover plate position detection system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material pit cover plate position detection system, comprising a material pit body, a wall column body, a cover plate body, a winding mechanism, a first position detection mechanism, a second position detection mechanism, and an electrical control box. The wall column body is longitudinally installed on one side above the material pit body, and the cover plate body is hinged to the edge of the material pit body. The winding mechanism is provided on the side of the wall column body away from the material pit body, and the first position detection mechanism is provided at the output end of the winding mechanism. The second position detection mechanism is provided on the side end face of the wall column body close to the material pit body. The winding mechanism, the first position detection mechanism, and the second position detection mechanism are electrically connected to the electrical control box.

[0007] The first position detection mechanism includes a limiting bracket and a first limiting switch. The first limiting switch is provided on the side end face of the limiting bracket, and a second limiting switch is provided below the first limiting switch. A through groove is longitudinally excavated at the center of the limiting bracket, and a limiting sensing steel plate is provided on the inner side of the through groove. A traction rope is connected to the upper end face of the limiting sensing steel plate, and one end of the traction rope passes through a first pulley and connects to a small drum.

[0008] Preferably, the second position detection mechanism includes an infrared sensor and an ultrasonic distance sensor, and three sets of both the infrared sensor and the ultrasonic distance sensor are provided, with the three sets of infrared sensors and ultrasonic distance sensors arranged in a cross pattern on the side end face of the wall column body.

[0009] Preferably, the winding mechanism includes a support frame and a servo motor. The support frame is installed on the side end face of the wall column body, and the servo motor is installed above the support frame. The output end of the servo motor is provided with a reducer, and the output end of the reducer is provided with a transmission rod. The outer surface of the transmission rod is connected to a support through a bearing. Three sets of supports are provided. The outer diameter surface of the transmission rod is provided with a large drum. The outer diameter surface of the large drum is provided with a steel rope, and one end of the steel rope passes through a second pulley and connects to the upper end face of the cover plate body.

[0010] Preferably, the cover plate body is hinged to the edge of the material pit body for limiting connection, and the contact surface between the cover plate body and the edge of the material pit body forms a rotating structure that rotates around the hinge center.

[0011] Preferably, the first pulley is specifically installed on the side end face of the wall column body, and the limiting bracket in the first position detection mechanism is installed directly below the first pulley. The limiting sensing steel plate and the through groove dug at the center of the limiting bracket form an up-and-down sliding structure.

[0012] Preferably, the small drum is specifically installed on the outer diameter surface of the transmission rod, and the support is specifically fixed on the side end face of the wall column body. Bearings are provided on the contact surfaces of the support and the transmission rod. The large drum is specifically installed on the outer diameter surface of the transmission rod.

[0013] Preferably, the servo motor forms a gear transmission structure with the reducer and the transmission rod, and the reducer forms a rod transmission structure with the large drum and the small drum through the transmission rod. The transmission rod forms a rotating structure around the bearing center with the support through the bearing. The servo motor in the winding mechanism, the first limit switch, the second limit switch and the limit sensing steel plate in the first position detection mechanism are electrically connected to the electrical control box.

[0014] Preferably, the infrared sensor and ultrasonic distance sensor in the second position detection mechanism are electrically connected to the electrical control box, and an emergency stop switch is provided on one side of the edge of the material pit body and on the side end face of the wall column body.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] Compared with existing technologies, this material pit cover plate position detection system is easy to implement. In this system, the winding mechanism drives the cover plate body to close with the material pit body, and the closed position of the cover plate body is monitored in real time by the first position detection mechanism and the second position detection mechanism. This device is simple to implement, which not only significantly reduces the equipment failure rate, but also changes the position detection from a contact limit switch to a non-contact proximity switch, reducing equipment wear. Furthermore, inspection, maintenance and handling are all done outside the material pit, avoiding the high risk of working inside the material pit, and also reducing the intensity of manual labor.

[0017] Compared with existing technologies, this material pit cover position detection system, in its use, involves activating a servo motor in the winding mechanism. The servo motor drives a reducer to rotate, which in turn drives a transmission rod to rotate. The transmission rod is connected to the wall column body via a support, facilitating its rotation. A large drum is provided on the outer diameter surface of the transmission rod. When the servo motor drives the transmission rod to rotate via the reducer, the large drum rotates with the transmission rod, thereby achieving the effect of winding the steel rope. One end of the steel rope passes through a second pulley and is connected to the cover body for a limiting connection, thereby driving the edge of the cover body and the material pit body to rotate, thus realizing the opening and closing of the cover body and the material pit body.

[0018] Compared with existing technologies, this material pit cover position detection system utilizes a first position detection mechanism where a small drum is mounted on the outer diameter surface of a transmission rod. When a servo motor drives the transmission rod to rotate via a reducer, the transmission rod drives the small drum to rotate synchronously. One end of a traction rope is fixed to the outer surface of the small drum, and the other end of the traction rope passes through a first pulley and is fixedly connected to a limit sensing steel plate. The limit sensing steel plate is placed inside a slot dug at the center of a limit bracket. When the small drum winds up the traction rope, the limit sensing steel plate moves up and down inside the slot. The limit sensing steel plate reaches the first limit switch and the second limit switch, respectively, to be in a closed state and an open state, thus facilitating the detection of the material pit cover position. Furthermore, the second position detection mechanism uses an infrared sensor and an ultrasonic distance sensor to further detect the cover body. Because the cover body is at an inclined angle, the ultrasonic distance sensor at different heights detects different distances. The greater the difference in detection distance between adjacent ultrasonic distance sensors, the smaller the tilt angle between the cover plate and the pit body; conversely, the smaller the difference in detection distance between adjacent ultrasonic distance sensors, the larger the tilt angle between the cover plate and the pit body. Furthermore, the opening and closing status and tilt angle of the cover plate are monitored in real time via the electrical control box. This significantly reduces the equipment failure rate. The position detection has also been changed from a contact-type limit switch to a non-contact proximity switch, reducing equipment wear. Inspection, maintenance, and processing are all performed outside the pit, avoiding the high risks associated with working inside the pit. This also reduces manual labor intensity and solves the problem that "the pit contains complex materials, and the hazardous waste is disposed of and handled within the pit, creating a harsh environment. Switches, conduits, and other electronic components are easily corroded and damaged. Corroded circuits can easily short-circuit and ignite, causing fires. Moreover, due to the flammable, corrosive, toxic, and harmful risks in the pit, manual maintenance of conduits and switches is difficult and poses extremely high safety risks." Attached Figure Description

[0019] Figure 1 This is a first-view structural diagram of the material pit body of this utility model.

[0020] Figure 2 This is a schematic diagram of the material pit body from a second perspective.

[0021] Figure 3 This is a top view of the wall column body of this utility model.

[0022] Figure 4 This is a schematic diagram of the front section of the limiting bracket of this utility model.

[0023] Figure 5 This is a top view of the winding mechanism of this utility model.

[0024] The attached diagram is labeled as follows: 1. Pit body; 2. Wall column body; 3. Cover plate body; 4. Winding mechanism; 41. Support frame; 42. Servo motor; 43. Reducer; 44. Transmission rod; 45. Support; 46. Large drum; 47. Steel rope; 48. Second pulley; 5. First position detection mechanism; 51. Limit bracket; 52. First limit switch; 53. Second limit switch; 54. Through slot; 55. Limit sensing steel plate; 56. Traction rope; 57. First pulley; 58. Small drum; 6. Second position detection mechanism; 61. Infrared sensor; 62. Ultrasonic distance sensor; 7. Electrical control box. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] As attached Figures 1 to 5The illustrated material pit cover plate position detection system includes a material pit body 1, a wall column body 2, a cover plate body 3, a winding mechanism 4, a first position detection mechanism 5, a second position detection mechanism 6, and an electrical control box 7. The wall column body 2 is longitudinally mounted on one side above the material pit body 1, and the cover plate body 3 is hinged to the edge of the material pit body 1. The winding mechanism 4 is located on the side of the wall column body 2 away from the material pit body 1, and the first position detection mechanism 5 is located at the output end of the winding mechanism 4. The second position detection mechanism 6 is located on the side end face of the wall column body 2 near the material pit body 1. The winding mechanism 4, the first position detection mechanism 5, and the second position detection mechanism 6 are electrically connected to the electrical control box 7. The first position detection mechanism 5 includes a limit bracket 51 and a first limit switch 52. A first limit switch 52 is provided on the side end face of the limit bracket 51, and a second limit switch 53 is provided below the first limit switch 52. A through groove 54 is longitudinally excavated at the center of the limit bracket 51, and a limit sensing steel plate 55 is provided on the inner side of the through groove 54. A traction rope 56 is connected to the upper end face of the limit sensing steel plate 55, and one end of the traction rope 56 passes through the first pulley 57 and connects to the small drum 58. The small drum 58 in the first position detection mechanism 5 is installed on the outer diameter surface of the transmission rod 44. When the servo motor 42 drives the transmission rod 44 to rotate through the reducer 43, the transmission rod 44 drives the small drum 58 to rotate synchronously. One end of the traction rope 56 is fixed to the outer surface of the small drum 58, and the other end of the traction rope 56 passes through the first pulley 57 and is fixedly connected to the... A limit sensing steel plate 55 is placed inside a through groove 54 dug at the center of the limit bracket 51. When the small drum 58 winds up the traction rope 56, the limit sensing steel plate 55 moves up and down inside the through groove 54. The limit sensing steel plate 55 reaches the first limit switch 52 and the second limit switch 53 in the closed and open states, respectively, which facilitates the detection of the position of the pit cover plate. The cover plate body 3 is hinged to the edge of the pit body 1 for limiting connection. The contact surface between the cover plate body 3 and the edge of the pit body 1 forms a rotating structure that rotates around the hinge center. The first pulley 57 is specifically installed on the side end face of the wall column body 2, and the limit bracket 51 in the first position detection mechanism 5 is installed directly below the first pulley 57 for limiting. The sensing steel plate 55 and the through groove 54 excavated at the center of the limiting bracket 51 form an up-and-down sliding structure. The second position detection mechanism 6 includes an infrared sensor 61 and an ultrasonic distance sensor 62. Three sets of both the infrared sensor 61 and the ultrasonic distance sensor 62 are provided, and these three sets are arranged crosswise on the side end face of the wall column body 2. The infrared sensor 61 and the ultrasonic distance sensor 62 in the second position detection mechanism 6 are electrically connected to the electrical control box 7. An emergency stop switch is provided on one side of the edge of the material pit body 1 and on the side end face of the wall column body 2. The cover plate body 3 is further detected by the infrared sensor 61 and the ultrasonic distance sensor 62 in the second position detection mechanism 6, since the cover plate body 3 is at an inclined angle.The ultrasonic distance sensors 62 at different heights detect different distances. The greater the difference in detection distance between adjacent ultrasonic distance sensors 62, the smaller the tilt angle between the cover plate body 3 and the material pit body 1. Conversely, the smaller the difference in detection distance between adjacent ultrasonic distance sensors 62, the larger the tilt angle between the cover plate body 3 and the material pit body 1. Furthermore, the opening and closing status and tilt angle of the cover plate body 3 are monitored in real time using the electrical control box 7. This structure significantly reduces the equipment failure rate, and the position detection is changed from a contact-type limit switch to a non-contact proximity switch, reducing equipment wear. Inspection, maintenance, and processing are all performed outside the material pit, avoiding the high risks of working inside the pit. It also reduces manual labor intensity and solves the problem that "however, because the material composition inside the pit is complex, and the recycled hazardous waste is all put into and handled in the pit, the environment is harsh, and electronic components such as switches and conduits are easily corroded and damaged. Corroded circuits are prone to short circuits and fires. Moreover, due to the flammable, corrosive, toxic, and harmful risks in the material pit, manual maintenance of conduits and switches inside is difficult and poses extremely high safety risks."

[0028] The winding mechanism 4 includes a support frame 41 and a servo motor 42. The support frame 41 is installed on the side end face of the wall column body 2, and the servo motor 42 is installed above the support frame 41. The output end of the servo motor 42 is equipped with a reducer 43, and the output end of the reducer 43 is equipped with a transmission rod 44. The outer surface of the transmission rod 44 is connected to a support 45 through a bearing. There are three sets of supports 45. The outer diameter surface of the transmission rod 44 is equipped with a large drum 46. The outer diameter surface of the large drum 46 is equipped with a steel rope 47. One end of the steel rope 47 passes through the second pulley 48 and connects to the upper end face of the cover plate body 3. When the servo motor 42 in the winding mechanism 4 is started, the servo motor 42 drives the reducer 43 to rotate, which in turn drives the transmission rod 44 to rotate. The transmission rod 44 is limited to the wall column body 2 through the support 45 to facilitate the rotation of the transmission rod 44. The outer diameter surface of the transmission rod 44 is equipped with a large drum 46.

[0029] When the servo motor 42 drives the transmission rod 44 to rotate via the reducer 43, the large drum 46 rotates along with the transmission rod 44, achieving the effect of winding the steel rope 47. One end of the steel rope 47 passes through the second pulley 48 and is limitedly connected to the cover plate body 3, causing the cover plate body 3 and the edge of the material pit body 1 to rotate, thus opening and closing the cover plate body 3 and the material pit body 1. The small drum 58 is specifically installed on the outer diameter surface of the transmission rod 44, and the support 45 is specifically fixed to the side end face of the wall column body 2. Bearings are provided on the contact surfaces of the support 45 and the transmission rod 44. The large drum 46 is specifically installed on the outer diameter surface of the transmission rod 44. The servo motor 42 forms a gear transmission structure with the transmission rod 44 through the reducer 43, and the reducer 43 is connected to the large drum 46 through the transmission rod 44. The drum 46 and the small drum 58 form a rod transmission structure. The transmission rod 44 forms a rotating structure around the bearing center through the bearing and the support 45. The servo motor 42 in the winding mechanism 4, the first limit switch 52, the second limit switch 53 and the limit sensing steel plate 55 in the first position detection mechanism 5 are electrically connected to the electrical control box 7. In this embodiment, the servo motor 42, the reducer 43, the limit switch and the limit sensing steel plate 55, the infrared sensor 61, the ultrasonic distance sensor 62 and the electrical control box 7 are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here we are only using them and have not made any structural or functional improvements. We will not go into details here.

[0030] The working process of this utility model is as follows: The servo motor 42 in the winding mechanism 4 is started. The servo motor 42 drives the reducer 43 to rotate, so that the transmission rod 44 rotates. A large drum 46 is provided on the outer diameter surface of the transmission rod 44. When the servo motor 42 drives the transmission rod 44 to rotate through the reducer 43, the large drum 46 rotates with the transmission rod 44, achieving the effect of winding the steel rope 47. One end of the steel rope 47 passes through the second pulley 48 and is limitedly connected to the cover plate body 3, causing the edge of the cover plate body 3 and the material pit body 1 to rotate, realizing the opening and closing of the cover plate body 3 and the material pit body 1. The small drum 58 and the large drum 46... Fixed on the same transmission rod 44, when the large drum 46 rotates, the small drum 58 rotates synchronously. The large drum 46 uses the steel rope 47 to pull the cover plate body 3 up and down, and the displacement of the steel rope 47 is proportionally transferred to the small drum 58. The small drum 58 is fixed with a traction rope 56. One end of the traction rope 56 is fixed to the small drum 58, and the other end passes through the first pulley 57 and is fixed to the limit sensing steel plate 55. The limit sensing steel plate 55 moves up and down with the rotation of the small drum 58 through the traction rope 56. Since the displacement of the steel rope 47 from the closed position to the open position of the cover plate body 3 is a fixed value, the movement of the traction rope 56 on the small drum 58 is also a fixed value.

[0031] A first limit switch 52 and a second limit switch 53 are installed at the closed and open positions of the cover body 3, corresponding to the limit plates 55. When the cover body 3 slowly closes, the limit plates 55 descend synchronously. When they reach the first limit switch 52 on the side of the limit bracket 51, the first limit switch 52 detects the plate and transmits a signal to the control box 7. Upon receiving the signal, the control box 7 stops the cover body 3 from descending further, indicating that the cover body 3 has been closed. Similarly, when the cover body 3 slowly opens, the limit plates 55 rise synchronously. When they reach the second limit switch 53 on the side of the limit bracket 51, the second limit switch 52... Switch 53 detects the limit sensing steel plate 55 and then transmits a signal to the electrical control box 7. After receiving the signal, the electrical control box 7 stops the cover body 3 from rising, indicating that the cover body 3 has been opened to the correct position. The second position detection mechanism 6 further detects the cover body 3. When the cover body 3 is at an inclined angle, the ultrasonic distance sensors 62 at different heights detect different distances. The greater the difference in the detected distances of adjacent ultrasonic distance sensors 62, the smaller the inclination angle between the cover body 3 and the material pit body 1. Conversely, the smaller the difference in the detected distances of adjacent ultrasonic distance sensors 62, the larger the inclination angle between the cover body 3 and the material pit body 1. At the same time, the electrical control box 7 monitors the opening and closing status and inclination angle of the cover body 3.

Claims

1. A material pit cover plate position detection system, comprising a material pit body (1), a wall column body (2), a cover plate body (3), a winding mechanism (4), a first position detection mechanism (5), a second position detection mechanism (6), and an electrical control box (7), characterized in that: A wall column body (2) is longitudinally installed on one side above the material pit body (1), and a cover plate body (3) is hinged at the edge of the material pit body (1). A winding mechanism (4) is provided on the side of the wall column body (2) away from the material pit body (1), and a first position detection mechanism (5) is provided at the output end of the winding mechanism (4). A second position detection mechanism (6) is provided on the side end face of the wall column body (2) close to the material pit body (1). The winding mechanism (4), the first position detection mechanism (5), and the second position detection mechanism (6) are electrically connected to an electrical control box (7). The first position detection mechanism (5) includes a limiting bracket (51) and a first limiting switch (52). The first limiting switch (52) is provided on the side end face of the limiting bracket (51), and a second limiting switch (53) is provided below the first limiting switch (52). A through groove (54) is longitudinally excavated at the center of the limiting bracket (51), and a limiting sensing steel plate (55) is provided on the inner side of the through groove (54). A traction rope (56) is connected to the upper end face of the limiting sensing steel plate (55), and one end of the traction rope (56) passes through the first pulley (57) and connects to the small drum (58).

2. The material pit cover plate position detection system according to claim 1, characterized in that: The second position detection mechanism (6) includes an infrared sensor (61) and an ultrasonic distance sensor (62). There are three sets of each infrared sensor (61) and ultrasonic distance sensor (62), and the three sets of infrared sensors (61) and ultrasonic distance sensors (62) are arranged in a cross pattern on the side end face of the wall column body (2).

3. The material pit cover plate position detection system according to claim 1, characterized in that: The winding mechanism (4) includes a support frame (41) and a servo motor (42). The support frame (41) is installed on the side end face of the wall column body (2), and the servo motor (42) is installed above the support frame (41). The output end of the servo motor (42) is provided with a reducer (43). The output end of the reducer (43) is provided with a transmission rod (44). The outer surface of the transmission rod (44) is connected to a support (45) through a bearing. There are three sets of supports (45). The outer diameter surface of the transmission rod (44) is provided with a large drum (46). The outer diameter surface of the large drum (46) is provided with a steel rope (47). One end of the steel rope (47) passes through the second pulley (48) and connects to the upper end face of the cover plate body (3).

4. The material pit cover plate position detection system according to claim 1, characterized in that: The cover plate body (3) is connected to the edge of the material pit body (1) by a hinge, and the contact surface between the cover plate body (3) and the edge of the material pit body (1) forms a rotating structure that rotates around the hinge center.

5. The material pit cover plate position detection system according to claim 1, characterized in that: The first pulley (57) is specifically installed on the side end face of the wall column body (2), and the limiting bracket (51) in the first position detection mechanism (5) is installed directly below the first pulley (57). The limiting sensing steel plate (55) and the through groove (54) dug at the center of the limiting bracket (51) form an up-and-down sliding structure.

6. The material pit cover plate position detection system according to claim 3, characterized in that: The small drum (58) is specifically installed on the outer diameter surface of the transmission rod (44), and the support (45) is specifically fixed on the side end face of the wall column body (2). The contact surfaces of the support (45) and the transmission rod (44) are both provided with bearings. The large drum (46) is specifically installed on the outer diameter surface of the transmission rod (44).

7. The material pit cover plate position detection system according to claim 3, characterized in that: The servo motor (42) forms a gear transmission structure with the reducer (43) and the transmission rod (44), and the reducer (43) forms a rod transmission structure with the large drum (46) and the small drum (58) through the transmission rod (44). The transmission rod (44) forms a rotating structure around the bearing center through the bearing and the support (45). The servo motor (42) in the winding mechanism (4), the first limit switch (52), the second limit switch (53) and the limit sensing steel plate (55) in the first position detection mechanism (5) are electrically connected to the electrical control box (7).

8. The material pit cover plate position detection system according to claim 2, characterized in that: The infrared sensor (61) and ultrasonic distance sensor (62) in the second position detection mechanism (6) are electrically connected to the electrical control box (7). An emergency stop switch is provided on one side of the edge of the material pit body (1) and on the side end face of the wall column body (2).

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