An electric control cabinet with self-checking function for logistics equipment

Abstract

The utility model discloses an embodiment of a kind of logistics equipment electric control cabinet with self-checking function, comprising: balance wheel machine, detection unit and electric control unit. The logistics equipment includes: rack and the balance wheel mechanism that can swing and rotate on rack, the detection unit includes: rotation detection module, swing detection module and reset detection module, the electric control unit has central processing unit, drum control unit, swing control unit, and then electric control unit can control the balance wheel machine operation, and swing angle of balance wheel mechanism, swing speed and the rotating speed of drum are detected by detection unit, accurate reset of balance wheel machine is detected by reset detection module simultaneously. The utility model concentrates complex electrical structure in electric control unit, detects drum rotating speed and swing angle speed using self-checking unit simultaneously, and accurate reset of balance wheel mechanism can also be judged, improve the accuracy of swing and reset.

Description

Technical Field

[0001] This utility model relates to the field of logistics equipment, and in particular to a logistics equipment electrical control cabinet with self-inspection function. Background Technology

[0002] In the field of logistics sorting, roller sorters are highly efficient and flexible devices that are installed on logistics conveyor belts. On the logistics conveyor belt, they perform multi-level sorting of packages based on scanned address information or logistics category, weight, etc., and transport them to different locations. For example, the electric roller servo swing wheel sorting machine disclosed in the existing technology CN119793899A and the electric roller swing wheel sorting machine disclosed in CN222220330U mostly adopt the solution of using an electric roller with a built-in drive motor and chip, mounting the electric roller on a roller support, and using a servo motor to drive the roller support to swing, thereby realizing the two actions of the roller rotation and swing.

[0003] However, this type of roller sorting machine still has certain drawbacks, such as: ① Servo motors can generally only control one row of roller supports to swing, so a servo controller is needed to control multiple servo motors. Additionally, the electric rollers require a separate control unit to control their rotation. Therefore, when the servo controller and the roller control unit are integrated into a single sorting machine, the electrical control circuitry becomes complex, heat dissipation is limited, and maintenance and replacement are difficult. ② The rotational speeds of the various electric rollers on the sorting machine are prone to inconsistencies, or the roller supports may not swing to their designated positions, leading to inaccurate conveying direction. Existing solutions lack methods for detecting the electric roller speed and the swing angle and speed of the roller supports. ③ When the swinging rotating support resets, inaccurate reset can easily occur, causing deviations in subsequent swings.

[0004] To address these issues, this solution designs a logistics equipment electrical control cabinet with self-inspection capabilities. Utility Model Content To address the aforementioned technical problems, this utility model provides a logistics equipment electrical control cabinet with a self-inspection function.

[0005] On the one hand, the servo controller and central processing unit are integrated into the electronic control unit, thus integrating complex electrical circuits and devices into the electronic control unit, facilitating heat dissipation and equipment replacement. On the other hand, the central processing unit and self-test unit acquire and monitor information such as the rotational speed of the electric roller and the swing angle and speed of the roller support, avoiding problems such as incomplete swing and speed differences between electric rollers. At the same time, the mechanical stop combined with photoelectric sensors and current monitoring of the central processing unit is used to determine the reset, thereby ensuring the accuracy of the roller support's reset after swinging. The specific scheme is as follows: A self-inspection function electrical control cabinet for logistics equipment includes: a swing wheel mechanism, a detection unit, and an electrical control unit; The pendulum mechanism includes a frame and a pendulum mechanism mounted on the frame. The pendulum mechanism includes an electric roller, a roller support, a pendulum linkage assembly, and a pendulum drive mechanism. The electric roller is rotatably mounted on the roller support. The pendulum linkage assembly is hinged to several of the roller supports. The pendulum drive mechanism is driven by one of the roller supports hinged to the pendulum linkage assembly, thereby driving the remaining roller supports linked by the pendulum linkage assembly to oscillate.

[0006] The detection unit includes a rotation detection module, a swing detection module, and a reset detection module. The rotation detection module is electrically connected to the electric roller, the swing detection module is electrically connected to the swing drive mechanism, and the reset detection module includes a mechanical stop and a photoelectric sensor located on the circumference of the swing linkage component, thereby triggering the photoelectric sensor when the swing linkage component moves to the position of the mechanical stop.

[0007] The electronic control unit includes a central processing unit, a roller control unit, and a swing control unit. The roller control unit and the swing control unit respectively drive and control the electric roller and the swing drive mechanism. The input terminal of the central processing unit is electrically connected to the rotation detection module, the swing detection module, and the reset detection module. When the electric roller rotates or the roller support swings, the central processing unit can detect the rotation speed of the electric roller through the rotation detection module and the rotation angle and swing speed of the roller support through the swing detection module. At the same time, when the swing drive mechanism swings and resets, the central processing unit can detect whether it has reset to the correct position through the reset detection module. The roller support is rotatably mounted on the frame via a rotating shaft. The top surface of the roller support is provided with a panel, and the center of the panel has an opening for the electric roller to extend out of the panel surface.

[0008] The swing drive mechanism is a servo motor, and the swing control unit is a servo controller. The servo controller can control the servo motor and drive the roller support to rotate.

[0009] The bottom of the roller bracket is provided with a linkage hole, and the bottom of the roller bracket, which is connected by the swing linkage component, is provided with a drive hole.

[0010] The swing linkage assembly includes a linkage rod and a drive rod. A plurality of connecting lugs are provided axially spaced on one side of the linkage rod. The connecting lugs are provided with connecting holes. The connecting holes and the linkage holes are hinged to each other, thereby enabling the plurality of roller supports in the same row to be linked together. One end of the drive rod is hinged to the drive hole, and the other end is hinged to the output shaft of the swing drive mechanism through a swing arm, so that the swing drive mechanism can drive the roller bracket connected by the drive rod to swing.

[0011] The mechanical stop is mounted on the frame and located within the swing range of the drive rod. The mechanical stop is equipped with an energy-absorbing structure for buffering. The photoelectric sensor is located on one side of the mechanical stop and is used to detect whether the drive rod is in contact with the mechanical stop. The electrical control unit further includes a display unit and a power supply unit. The central processing unit is connected to the display unit and displays the electric roller rotation speed, roller support swing angle and swing speed obtained by the detection unit through the display unit. The power supply unit is connected to a contactor and a circuit breaker and is used to supply power to the logistics equipment.

[0012] The rotation detection module is a speed detection sensor located inside the electric drum. The speed detection sensor can obtain the speed of the motor inside the electric drum and feed it back to the central processing unit.

[0013] The swing detection module is connected to the swing drive mechanism, and thus the swing detection module can obtain the swing angle and swing speed of the roller support and feed them back to the central processing unit.

[0014] The central processing unit is a PLC system.

[0015] Implementing this utility model embodiment has the following beneficial effects: ① By centrally placing the circuit lines, central processing unit, and swing control unit through the electronic control unit, the heat dissipation problem caused by placing complex lines and devices under the frame is avoided. ② The circuit breakers and contactors installed in the electronic control unit can be used to replace or add various electric rollers and servo motors, thereby making the replacement and maintenance of logistics equipment more convenient, and also allowing for flexible increases or decreases in the number of electric rollers and roller supports. ③ The electronic control unit is equipped with a central processing unit, which receives information such as the rotation speed of the electric rollers and the swing angle and swing speed of the roller supports from the rotation detection module and the swing detection module, ensuring that the roller speed meets the standard and that the roller supports swing in place. ④ The mechanical stop, photoelectric sensor, and central processing unit determine whether the roller supports have been accurately reset, thereby ensuring that the reset is in place and avoiding deviations in subsequent swinging. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the logistics equipment of this utility model; Figure 2 This is a schematic diagram of the wheel pendulum mechanism of this utility model; Figure 3 This is a schematic diagram of the roller bracket of this utility model; Figure 4 This is a schematic diagram of the swing linkage rod of this utility model; Figure 5 This is a schematic block diagram of the electronic control unit of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0018] like Figures 1-4 As shown, a logistics equipment electrical control cabinet with self-inspection function includes: a swing wheel machine 1, a detection unit 2, and an electrical control unit 3; like Figure 2 As shown, the pendulum mechanism 1 includes a frame 11 and a pendulum mechanism 12 mounted on the frame 11. The pendulum mechanism 12 includes an electric roller 121, a roller support 122, a pendulum linkage assembly 123, and a pendulum drive mechanism 124. The electric roller 121 is rotatably mounted on the roller support 122. The pendulum linkage assembly 123 is hinged to several roller supports 122. The pendulum drive mechanism 124 is driven by one of the several roller supports 122 hinged to the pendulum linkage assembly 123, thereby driving the remaining roller supports 122 linked by the pendulum linkage assembly 123 to oscillate.

[0019] The detection unit 2 includes a rotation detection module 21, a swing detection module 22, and a reset detection module 23. The reset detection module 23 includes a mechanical stop 231 disposed on the circumference of the swing linkage component 123 and a photoelectric sensor 232, thereby triggering the photoelectric sensor 232 when the swing linkage component 123 moves to the position of the mechanical stop 231.

[0020] The electronic control unit 3 includes a central processing unit 31, a roller control unit 32, and a swing control unit 33. The roller control unit 32 and the swing control unit 33 respectively drive and control the electric roller 121 and the swing drive mechanism 124. The input terminal of the central processing unit 31 is electrically connected to the rotation detection module 21, the swing detection module 22, and the reset detection module 23. When the electric roller 121 rotates or the roller support 122 swings, the central processing unit 31 can detect the rotation speed of the electric roller 121 through the rotation detection module 21 and the rotation angle and swing speed of the roller support 122 through the swing detection module 22. At the same time, when the swing drive mechanism 124 swings and resets, the central processing unit 31 can detect whether it has reset to the correct position through the reset detection module 23. It should be noted that the electric roller 121 in this embodiment has an internal motor that provides the power to drive the electric roller to rotate. The electric roller 121 is an existing mature product. In addition, the roller control unit 21 is the control terminal for controlling each roller motor. Specifically, it can be centrally controlled by a PLC system or it can be an independent control chip set inside each electric roller, and then the PLC control system controls each roller motor through the control chip.

[0021] like Figure 3 As shown, the roller support 122 is rotatably mounted on the frame 11 via a rotating shaft. The top surface of the roller support 122 is provided with a panel 1221, and the middle of the panel 1221 is provided with an opening 1222 for the electric roller 121 to protrude from the surface of the panel.

[0022] like Figure 3 , Figure 4 As shown, the bottom of the roller support 122 is provided with a linkage hole 1223, and the bottom of the roller support 122, which is connected by the swing linkage assembly 123, is provided with a drive hole 1224.

[0023] The swing linkage assembly 123 includes a linkage rod 1231 and a drive rod 1232. The linkage rod 1231 has a plurality of connecting lugs spaced apart along the axial direction on one side. The connecting lugs are provided with connecting holes. The connecting holes are hinged to the linkage holes 1223, thereby enabling the plurality of roller supports 122 in the same row to be linked together.

[0024] One end of the drive rod 1232 is hinged to the drive hole 1224, and the other end is hinged to the output shaft of the swing drive mechanism 124 through the swing arm 1233. Thus, the swing drive mechanism 124 can drive the roller bracket 122 connected by the drive rod 1232 to swing.

[0025] It should be noted that in this embodiment, a swing drive mechanism is connected to the end of each row of roller supports connected in series by the linkage rod 1231. At the same time, the swing drive mechanism 124 is connected to the adjacent two rows of roller supports through the drive rod, so that a single swing drive mechanism 124 can drive two rows of roller supports 122 to swing, thereby reducing the number of swing drive mechanisms 124.

[0026] It should be noted that the swing drive mechanism 124 in this solution is a servo motor, and the swing control unit 32 is a servo controller. The servo controller can control the servo motor and drive the roller support 122 to rotate. The servo controller is a conventional existing product, and its connection and control scheme with the servo motor is a mature solution in the field, so it will not be described again.

[0027] like Figure 5 As shown, the electrical control unit 3 also includes a display unit 34 and a power supply unit 35. The central processing unit 31 is connected to the display unit 34 through a channel, and displays the electric roller speed, roller support swing angle and swing speed obtained by the detection unit 2 through the display unit 34. The power supply unit 35 is connected to a contactor and a circuit breaker, and the power supply unit 35 is used to supply power to the logistics equipment.

[0028] Specifically, the swing detection module 22 is connected to the swing drive mechanism 124, and the swing detection module 22 can obtain the swing angle and swing speed of the roller support 122 and feed them back to the central processing unit 31.

[0029] It should be noted that the swing detection module 22 can be an encoder connected to the output shaft of the servo motor, and can accurately feed back the rotation angle and position of the servo motor output shaft. Combined with clock information, the rotation angle and rotation speed of the roller support can be obtained.

[0030] Specifically, the central processing unit 31 is a PLC system.

[0031] Description of the reset detection scheme: The reset detection module is used to ensure that the swing drive mechanism 124 can accurately reset to the origin after swinging. This embodiment, based on a servo motor and a PLC system, provides a reset scheme using mechanical limits, as detailed below: Please combine Figure 3 A mechanical stop 231 needs to be set in the swing stroke of the swing linkage component 123. In this solution, it is set below the drive rod 1232, and the lower part of the drive rod 1232 is provided with a protrusion that can cooperate with the mechanical stop 231. Then, when the drive rod 1232 swings to a certain angle, it is limited by the mechanical stop 231. The limit position is taken as the origin, and a photoelectric sensor 232 is set on the side corresponding to the origin.

[0032] When the servo controller controls the output shaft of the servo motor to swing, and when it drives the drive rod to swing to the origin position, the drive rod 1232 is blocked by the mechanical stop 231 and stalls. At this time, the central processing unit 31 monitors the current data of the servo motor. When the current of the servo motor reaches the detection threshold, the servo motor is stopped immediately. The central processing unit 31 uses the encoder count value at which the motor stops as the electrical origin. In addition, when the photoelectric sensor 232 senses that the drive rod 1232 has swung to the origin position, it sends an electrical signal to the central processing unit 31 to prompt the drive rod to reset to the origin position.

[0033] One more point: because the output shaft of the servo motor has a large output power, the drive rod 1232 may collide with the mechanical stop 231 at high speed. Therefore, in actual use, in order to protect the output shaft from damage, the mechanical stop 231 should be equipped with a hydraulic buffer or other energy absorption device on the impact surface.

[0034] The mechanical limiting method provided in this embodiment combines physical limiting with the monitoring of current signals by the central processing unit 31 and the sensing of photoelectric sensors, which greatly improves the accuracy of reset detection.

[0035] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit and essence of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A logistics equipment electrical control cabinet with self-inspection function, characterized in that, It includes a balance wheel mechanism (1), a detection unit (2), and an electrical control unit (3); The swing wheel machine (1) includes a frame (11) and a swing wheel mechanism (12) mounted on the frame (11). The swing wheel mechanism (12) includes an electric roller (121), a roller support (122), a swing linkage assembly (123), and a swing drive mechanism (124). The electric roller (121) is rotatably mounted on the roller support (122). The swing linkage assembly (123) is hinged to a plurality of the roller supports (122). The swing drive mechanism (124) is driven by one of the roller supports (122) hinged to the swing linkage assembly (123), thereby driving the remaining roller supports (122) linked by the swing linkage assembly (123) to swing. The detection unit (2) includes a rotation detection module (21), a swing detection module (22), and a reset detection module (23). The reset detection module (23) includes a mechanical stop (231) disposed on the circumference of the swing linkage component (123) and a photoelectric sensor (232), thereby triggering the photoelectric sensor (232) when the swing linkage component (123) moves to the position of the mechanical stop (231). The electronic control unit (3) includes: a central processing unit (31), a roller control unit (32), and a swing control unit (33). The roller control unit (32) and the swing control unit (33) drive and control the electric roller (121) and the swing drive mechanism (124) respectively. The input end of the central processing unit (31) is electrically connected to the rotation detection module (21), the swing detection module (22), and the reset detection module (23). When the electric roller (121) rotates or the roller support (122) swings, the central processing unit (31) can detect the rotation speed of the electric roller (121) through the rotation detection module (21) and the rotation angle and swing speed of the roller support (122) through the swing detection module (22). At the same time, when the swing drive mechanism (124) swings and resets, the central processing unit (31) can detect whether it has been reset in place through the reset detection module (23).

2. The logistics equipment electrical control cabinet with self-inspection function according to claim 1, characterized in that, The roller support (122) is rotatably mounted on the frame (11) via a rotating shaft. The top surface of the roller support (122) is provided with a panel (1221), and the middle of the panel (1221) is provided with an opening (1222) for the electric roller (121) to protrude from the surface of the panel.

3. The logistics equipment electrical control cabinet with self-inspection function according to claim 1, characterized in that, The swing drive mechanism (124) is a servo motor, and the swing control unit (33) is a servo controller. The servo controller can control the servo motor and drive the roller support (122) to rotate.

4. The electrical control cabinet for logistics equipment with self-inspection function according to claim 1, characterized in that, The bottom of the roller bracket (122) is provided with a linkage hole (1223), and the bottom of the roller bracket (122) is provided with a drive hole (1224) which is connected by the swing linkage assembly (123).

5. The logistics equipment electrical control cabinet with self-inspection function according to claim 4, characterized in that, The swing linkage assembly (123) includes: a linkage rod (1231) and a drive rod (1232). The linkage rod (1231) has a number of connecting lugs spaced apart along the axial direction on one side. The connecting lugs are provided with connecting holes. The connecting holes are hinged to the linkage holes (1223), thereby enabling the several roller supports (122) in the same row to be linked together. One end of the drive rod (1232) is hinged to the drive hole (1224), and the other end is hinged to the output shaft of the swing drive mechanism (124) through the swing arm (1233). Thus, the swing drive mechanism (124) can drive the roller bracket (122) connected by the drive rod (1232) to swing.

6. The electrical control cabinet for logistics equipment with self-inspection function according to claim 5, characterized in that, The mechanical stop (231) is mounted on the frame and located within the swing range of the drive rod (1232). The mechanical stop (231) is provided with an energy-absorbing structure for buffering. The photoelectric sensor (232) is located on one side of the mechanical stop (231) and is used to detect whether the drive rod (1232) is in contact with the mechanical stop (231).

7. The electrical control cabinet for logistics equipment with self-inspection function according to claim 1, characterized in that, The electronic control unit (3) also includes a display unit (34) and a power supply unit (35). The central processing unit (31) is connected to the display unit (34) through a channel, and displays the electric roller speed, roller support swing angle and swing speed obtained by the detection unit (2) through the display unit (34). The power supply unit (35) is connected to a contactor and a circuit breaker, and the power supply unit (35) is used to supply power to the logistics equipment.

8. The electrical control cabinet for logistics equipment with self-inspection function according to claim 1, characterized in that, The rotation detection module (21) is a rotation speed detection sensor located inside the electric roller (121). The rotation speed detection sensor can obtain the rotation speed of the motor inside the electric roller (121) and feed it back to the central processing unit (31).

9. A logistics equipment electrical control cabinet with self-inspection function according to claim 1, characterized in that, The swing detection module (22) is connected to the swing drive mechanism (124), and the swing detection module (22) can obtain the swing angle and swing speed of the roller support (122) and feed them back to the central processing unit (31).

10. A logistics equipment electrical control cabinet with self-inspection function according to claim 1, characterized in that, The central processing unit (31) is a PLC system.

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