Power supply protection device for automation equipment

Abstract

The invention relates to the technical field of power supply protection equipment, and discloses a power supply protection device for automation equipment, the power supply protection device comprises a box body and a base, the side surface of the box body is composed of a plurality of side plates, the top of each side plate is correspondingly provided with a top plate, the side plates and the top plates jointly enclose to form a closed structure, each side plate is provided with heat dissipation holes, and the heat dissipation holes are communicated with the base. The bottom of each side plate is in sliding connection with the base, and a driving assembly for driving the side plates to move synchronously is arranged in the base; a power supply box and a protection box are arranged in the box body, a detection assembly is arranged in the protection box, the detection assembly is connected with a driving assembly, and when it is detected that a circuit is abnormal, the box body can be controlled to be opened through the driving assembly. Through dual protection logic, fault omission caused by single parameter monitoring is avoided, and power supply safety of automation equipment is ensured; the problems of heat dissipation and dust accumulation of a traditional device are solved, and stable operation of internal elements is guaranteed; manual intervention is not needed after abnormal triggering, and downtime is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply protection equipment, and particularly to a power supply protection device for automated equipment. Background Art

[0002] In the field of automated industrial production, the power supply system is the core support for the stable operation of equipment. Its failures not only cause production line downtime (the downtime loss per hour can reach tens of thousands of yuan), but may also trigger safety accidents such as component burnout and circuit short - circuit. Therefore, the performance of the power supply protection device is crucial. However, there are still many technical pain points in the existing power supply protection devices supporting automated equipment: First, the protection dimension is single, and the fault omission rate is relatively high, making it difficult to meet the high requirements of automated equipment for power supply safety.

[0003] Second, there is an inherent contradiction between heat dissipation and dust prevention design: to ensure heat dissipation, some devices adopt a straight - hole open - type structure, resulting in a large amount of dust and oil in the production environment invading the internal circuit; to avoid dust accumulation, some devices adopt a fully enclosed structure, but due to insufficient heat dissipation, the temperature inside the box exceeds 100°C in summer, accelerating the aging speed of components and shortening the service life by 30%.

[0004] Third, the abnormal response depends on manual operation and has poor adaptability: after the existing devices detect an abnormality, they mostly only alarm through indicator lights, requiring manual troubleshooting of the fault point, manually opening the box for heat dissipation, and manually resetting the power supply after the fault is排除. The response cycle is long, and frequent manual intervention seriously affects production efficiency. Therefore, those skilled in the art urgently need to develop a power supply protection device for automated equipment. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and a power supply protection device for automated equipment is proposed.

[0006] To achieve the above - mentioned purpose, the present invention adopts the following technical solution: A power supply protection device for automated equipment includes a box body and a base arranged at the bottom of the box body. The side surface of the box body is composed of multiple side plates, and a top plate is correspondingly arranged at the top of each side plate. The side plates and the top plates jointly enclose a closed structure. Heat dissipation holes are opened on each side plate, and each side plate is slidably connected to the base. A driving component for driving multiple side plates to move synchronously is arranged in the base to realize the opening and closing of the box body; A power supply box and a protection box are arranged inside the box body. The protection box is electrically connected to the power supply box. A detection component is arranged inside the protection box, and the detection component is connected to the driving component. When a circuit abnormality is detected, the opening of the box body can be controlled through the driving component.

[0007] Preferably, there are four side plates, each with an L-shaped cross-section and connected end to end. The side plates and the top plate together form a square structure, and the base is also a square structure.

[0008] Preferably, the base has four slides arranged in a cross shape. The drive assembly includes four lead screws rotatably disposed inside the base. The four lead screws are located directly below the four slides. Each lead screw is threaded with a sleeve. Motors are provided at the four corners inside the base. A fixed seat is provided at the center inside the base. The output end of the motor is connected to the corresponding lead screw. The bottom of the side plate extends to the corresponding slide and is connected to the sleeve below.

[0009] Preferably, the detection component includes a bimetallic strip disposed inside the protective box, a contact is provided below the bimetallic strip, the contact is connected to a contact rod, a guide frame is provided around the contact rod, the contact rod is slidably connected to the guide frame, a base plate is connected to the bottom of the contact rod, an insulating sheet and a guide plate are arranged in sequence below the base plate, two upper contacts are connected below the guide plate, two lower contacts are provided at corresponding positions on the bottom of the protective box, the two lower contacts are respectively connected to the positive and negative terminals of the controller through wires, and the controller is connected to four motors inside the base.

[0010] Preferably, the bottom of the guide frame is provided with a support base, and the two sides of the base plate are connected through sliding rods, and the base plate and the sliding rods are slidably connected. The top of the two sliding rods is connected to the guide frame, and the lower end of the two sliding rods is provided with a spring.

[0011] Preferably, the guide plate has connectors at both ends, and the power supply box is connected to the connectors at both ends by wires.

[0012] Preferably, each top plate has an arc-shaped notch at its junction, and an alarm is installed inside the arc-shaped notch, which is connected to the controller.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In this invention, a dual protection logic is used to avoid fault omissions caused by monitoring a single parameter, thus ensuring the power supply safety of automated equipment.

[0014] Under normal conditions, the side panels and top panel enclose the enclosure to form a closed box, which, together with the ventilation holes, enables natural heat dissipation. In case of an abnormality, the side panels automatically unfold to enhance heat dissipation efficiency. At the same time, the closed structure can reduce the intrusion of external dust, thus solving the contradiction of traditional devices where "heat dissipation inevitably leads to dust accumulation and dust prevention easily leads to overheating," and ensuring the stable operation of internal components. After an anomaly is triggered, no manual intervention is required. The control can simultaneously drive the side panel opening and closing (automatic motor control) and sound and light alarms, realizing full-process automation of "fault detection - heat dissipation protection - personnel reminder". There is no manual delay in abnormal response, which is suitable for unattended scenarios in automated production lines. After the fault is cleared, the device can automatically reset and restore power supply, reducing downtime. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front structural cross-sectional view of the present invention; Figure 3 This is a front sectional view of the protective box described in this invention; Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a structural diagram of the housing described in this invention; Figure 6 This is a top structural diagram of the base described in this invention; Figure 7 This is a cross-sectional view of the internal structure of the base described in this invention.

[0015] In the diagram: 1-Box body; 101-Side plate; 102-Top plate; 103-Heat dissipation hole; 2-Base; 201-Slide rail; 202-Lead rod; 203-Rod sleeve; 204-Fixing seat; 205-Motor; 3-Alarm; 4-Power supply box; 401-Wire; 5-Protection box; 501-Bimetallic strip; 502-Connector; 503-Contact; 504-Contact rod; 505-Guide frame; 506-Support seat; 507-Slide rod; 508-Base plate; 509-Spring; 510-Insulating sheet; 511-Guide plate; 512-Upper contact; 513-Lower contact. Detailed Implementation

[0016] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative and is not intended to limit the scope of the invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Please see Figures 1-7 The present invention provides an embodiment of a power supply protection device for automated equipment, comprising a housing 1 and a base 2 disposed at the bottom of the housing 1. The side of the housing 1 is composed of multiple side plates 101, and a top plate 102 is provided on the top of each side plate 101. The side plates 101 and the top plate 102 together form a closed structure. Each side plate 101 is provided with heat dissipation holes 103. The bottom of each side plate 101 is slidably connected to the base 2. The base 2 is provided with a drive assembly for driving the multiple side plates 101 to move synchronously, so as to realize the opening and closing of the housing 1. The enclosure 1 contains a power supply box 4 and a protection box 5. The protection box 5 is electrically connected to the power supply box 4. The protection box 5 contains a detection component, which is connected to the drive component. When a circuit abnormality is detected, the drive component can control the opening of the enclosure 1.

[0020] The ventilation holes 103 of the side panel 101 are designed with a louvered inclined structure (inclination angle of 15°), and an 80-mesh nylon dustproof mesh (removable by buckle) is embedded in the holes, which not only prevents external dust from directly entering the cabinet 1, but also ensures that hot air is naturally discharged; at the same time, a cooling fan (electrically connected to the power supply box 4) is added to the bottom of the top panel 102, and the fan outlet faces the top of the power supply box 4, forming a forced heat dissipation channel of "bottom in and top out".

[0021] The base 2 has adjustable feet at the four corners of the bottom, which can be rotated to make the base level. The top center of the box 1 has a lifting ring for easy hoisting and installation of the whole equipment. The power supply box 4 is equipped with a DZ47-63 overload protector and a LEB-32 leakage protector. Its output terminal is connected in series with the connector 502 of the protection box 5 to form a dual protection logic of "overload / leakage + abnormal temperature".

[0022] Furthermore, there are four side plates 101, each with an L-shaped cross-section and connected end-to-end. The side plates 101 and the top plate 102 together form a square structure, and the base 2 is also a square structure. Furthermore, the base 2 has four slide rails 201, which are arranged in a cross shape. The drive assembly includes four lead screws 202 rotatably installed inside the base 2. The four lead screws 202 are located directly below the four slide rails 201. Each lead screw 202 is threaded with a sleeve 203. Motors 205 are installed at the four corners inside the base 2. A fixed seat 204 is installed at the center inside the base 2. The output end of the motor 205 is connected to the corresponding lead screw 202. The bottom of the side plate 101 extends to the corresponding slide rail 201 and is connected to the sleeve 203 below.

[0023] The slide rail 201 of the base 2 is embedded with a polytetrafluoroethylene wear-resistant bushing to reduce the sliding wear between the side plate 101 and the slide rail 201; the lead screw 202 is wrapped with a stainless steel protective corrugated tube (both ends are sealed to the fixed seat 204 and the motor 205 end cover respectively) to prevent dust and oil from entering and affecting the thread transmission; the motor 205 is a 57 stepper motor (model 57HS22), and is equipped with a driver (model DM542) and a controller to achieve uniform sliding of the side plate 101.

[0024] Furthermore, the detection component includes a bimetallic strip 501 disposed inside the protective box 5. The two ends of the guide strip 511 are provided with connectors 502. The power supply box 4 is connected to the connectors 502 at both ends via wires 401. A contact 503 is provided below the bimetallic strip 501. The contact 503 is connected to the contact rod 504. A guide frame 505 is provided around the contact rod 504. The contact rod 504 and the guide frame 505 are slidably connected. A base plate 508 is connected to the bottom of the contact rod 504. An insulating sheet 510 and a guide strip 511 are arranged in sequence below the base plate 508. Two upper contacts 512 are connected below the guide strip 511. Two lower contacts 513 are provided at corresponding positions at the bottom of the protective box 5. The two lower contacts 513 are respectively connected to the positive and negative terminals of the controller via wires. The controller is connected to the four motors 205 inside the base 2.

[0025] Furthermore, the bottom of the guide frame 505 is provided with a support seat 506, and the two sides of the base plate 508 are connected through sliding rods 507, and the base plate 508 and the sliding rods 507 are slidably connected. The top of the two sliding rods 507 is connected to the guide frame 505, and the lower end of the two sliding rods 507 is provided with a spring 509.

[0026] Furthermore, each of the top plates 102 has an arc-shaped notch at its junction, and an alarm 3 is installed inside the arc-shaped notch. The alarm 3 is connected to the controller.

[0027] The bimetallic strip 501 of the detection component is made of brass-Invar alloy composite material, which is suitable for the abnormal temperature range of 50-120℃ commonly found in automated equipment; a 0.5mm thick silicone rubber buffer pad is attached to the top of the contact rod 504 where it contacts the bimetallic strip 501 to avoid impact damage when the bimetallic strip is deformed; the guide plate 511 and the upper contact 512 are made of silver-copper alloy material, and the surface of the lower contact 513 is nickel-plated to reduce contact resistance and prevent contact erosion.

[0028] The controller uses an STM32F103C8T6 microcontroller, and its I / O ports are connected to the lower contact 513 of the detection component, the motor driver, the alarm 3, and the overload / leakage protector of the power supply box 4.

[0029] Alarm 3 is an integrated sound and light device (model LTE-1101J). When embedded in the arc-shaped notch 102 of the top plate, it is filled with a nitrile rubber waterproof ring (waterproof rating IP54) to adapt to humid industrial environments.

[0030] Working principle of this invention: 1. Normal working status The power supply box 4 is connected to an external power source via wires. The internal overload protector and leakage protector are in a closed state. Electrical energy is transmitted to the connector 502 of the protection box 5 via wire 401 to power the automated equipment. At this time, the bimetallic strip 501 inside the protection box 5 maintains its initial shape due to normal temperature (≤50℃). The contact rod 504 is in a high position under the support of the spring 509. The upper contact 512 and the lower contact 513 are separated. The controller does not receive an abnormal signal. The motor 205 does not operate. The side plate 101 and the top plate 102 enclose a closed box. The heat dissipation hole 103 and the top fan work together to achieve normal heat dissipation.

[0031] 2. Abnormal response status Fault Trigger: When the circuit experiences overload (current ≥ 1.2 times the rated value), leakage (leakage current ≥ 30mA), or overheating (internal temperature ≥ 80℃), if it is an overload / leakage, the overload protector / leakage protector of power supply box 4 will first trip to cut off part of the circuit. If the fault is not resolved (e.g., the overload continues to cause the temperature to rise), the bimetallic strip 501 inside the protection box 5 will bend and deform due to the difference in thermal expansion coefficients, pushing the contact rod 504 downward. The contact rod 504 will slide down along the guide frame 505 and the slide rod 507, compressing the spring 509 until the upper contact 512 and the lower contact 513 make contact.

[0032] Protection Action: After the upper and lower contacts are closed, the controller receives an abnormal signal through the wires and immediately triggers two actions: ① Sends a signal to the motor driver to control the four stepper motors 205 to rotate synchronously in the forward direction, drive the lead screw 202 to rotate, and drive the sleeve 203 to slide outward along the slide rail 201, thereby pulling the side plate 101 to unfold around the base 2 and opening the box 1 for rapid heat dissipation; ② Sends a signal to the alarm 3 to activate the audible and visual alarm and remind maintenance personnel to troubleshoot the fault. Reset and Recovery: After maintenance personnel troubleshoot the fault (such as replacing overloaded components or repairing leakage points), the temperature inside the box drops to the normal range (≤50℃), the bimetallic strip 501 returns to its initial shape, the spring 509 resets and pushes the contact rod 504 upward, and the upper and lower contacts separate; after the controller detects that the signal is disconnected, it controls the motor 205 to reverse, driving the side plate 101 to reset and close the box, and at the same time shuts off the alarm 3, and the device returns to normal power supply status.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A power supply protection device for automated equipment, comprising a housing and a base disposed at the bottom of the housing, characterized in that: The side of the box is composed of multiple side plates, and a top plate is provided on the top of each side plate. The side plates and the top plate together form a closed structure. Each side plate is provided with heat dissipation holes. The bottom of each side plate is slidably connected to the base. The base is provided with a drive component that drives the multiple side plates to move synchronously, so as to realize the opening and closing of the box. The enclosure contains a power supply box and a protection box. The protection box is electrically connected to the power supply box. The protection box contains a detection component, which is connected to a drive component. When a circuit abnormality is detected, the drive component can control the opening of the enclosure.

2. The power supply protection device for automated equipment according to claim 1, characterized in that: There are four side panels, each with an L-shaped cross-section and connected end to end. The side panels and the top panel together form a square structure, and the base is also a square structure.

3. A power supply protection device for automated equipment according to claim 2, characterized in that: The base has four slides arranged in a cross shape. The drive assembly includes four lead screws rotatably mounted inside the base. The four lead screws are located directly below the four slides. Each lead screw is threaded with a sleeve. Motors are located at the four corners inside the base. A fixed seat is located at the center inside the base. The output end of the motor is connected to the corresponding lead screw. The bottom of the side plate extends to the corresponding slide and is connected to the sleeve below.

4. A power supply protection device for automated equipment according to claim 3, characterized in that: The detection component includes a bimetallic strip disposed inside a protective box. A contact is located below the bimetallic strip and is connected to a contact rod. A guide frame is provided around the contact rod, and the contact rod is slidably connected to the guide frame. A base plate is connected to the bottom of the contact rod. An insulating sheet and a guide plate are arranged in sequence below the base plate. Two upper contacts are connected below the guide plate. Two lower contacts are provided at corresponding positions on the bottom of the protective box. The two lower contacts are respectively connected to the positive and negative terminals of the controller through wires. The controller is connected to four motors inside the base.

5. A power supply protection device for automated equipment according to claim 4, characterized in that: The bottom of the guide frame is provided with a support base, and sliding rods are connected through both sides of the base plate, and the base plate and the sliding rods are slidably connected. The top of the sliding rods on both sides is connected to the guide frame, and the lower end of the sliding rods on both sides is provided with a spring.

6. A power supply protection device for automated equipment according to claim 4, characterized in that: The guide plate has connectors at both ends, and the power supply box is connected to the connectors at both ends by wires.

7. A power supply protection device for automated equipment according to claim 4, characterized in that: Each top panel has an arc-shaped notch at its junction, and an alarm is installed inside the arc-shaped notch. The alarm is connected to the controller.

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