Integrated digital protection control device for direct current feeder

Abstract

The utility model relates to the technical field of power equipment, in particular to an integrated digital protection control device for a direct-current feeder line, which comprises a host body. A protection plate used for protecting the liquid crystal display screen and the keys is installed between the two sliding grooves in a sliding mode. The protection plate is arranged on the front side of the host body and arranged on the front side of the liquid crystal display screen, so that external accidental collision and the like cannot directly act on structures such as the liquid crystal display screen and the like, the structures such as the liquid crystal display screen and the like are protected, and stable operation of the integrated digital protection control device is guaranteed; by means of the structures such as the fixing rod, the fixing hole, the gear and the rack, the protection plate can be stably installed on the front side of the liquid crystal display screen for protection, the protection plate can be pushed towards one side to adjust the position of the protection plate, operation on keys and the like is facilitated, and the design meets the use requirements of protection and operation at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, and particularly relates to an integrated digital protection and control device for DC feeders. Background Technique

[0002] The integrated digital protection and control device is a kind of power protection equipment, which integrates multiple functions such as protection, control, measurement and data communication. It has protection functions, including overcurrent protection, short-circuit protection, ground protection, etc. When a fault occurs in the DC feeder, it can quickly cut off the fault current to prevent the expansion of the fault. It also has control functions, which can remotely control and operate devices such as switches and circuit breakers of the DC feeder to realize the automatic switching and fault isolation of the feeder. At present, this device is widely used in fields such as subways, urban rail transit, and power systems, and is of great significance for ensuring the safe and stable operation of the power supply system.

[0003] The main structure of the integrated digital protection and control device includes a casing, a microprocessor, a memory, a data acquisition module, etc. Among them, the design of the casing not only ensures the safety and stability of the internal components, but also incorporates a user interface, including a high-definition liquid crystal display, operation cursor movement keys, menu keys, RS232 maintenance interfaces, and LED indicators, etc. However, although this design greatly facilitates the operation and maintenance of users, it also faces challenges from external environmental factors. Specifically, during use, parts such as the liquid crystal display and operation keys that are directly exposed to the external environment are easily damaged due to accidental bumps, scratches or the influence of adverse environmental factors. Such damage may not only lead to a decline in the display effect of the display screen, but may even affect the normal operation of the entire protection and control device. In view of this, we propose an integrated digital protection and control device for DC feeders. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated digital protection and control device for DC feeders to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated digital protection and control device for DC feeders includes a main body of the host. A liquid crystal display is provided at the front end of the main body of the host, and a plurality of keys are provided below the liquid crystal display.

[0007] Fixing bars are fixed at the upper and lower ends of the front end face of the main body of the host. A sliding groove is opened at each of the two opposite end faces of the two fixing bars, and a fixing hole is opened at the right end of the sliding groove. A connecting plate is fixed at the right end between the two fixing bars.

[0008] A protection plate for protecting the liquid crystal display screen and buttons is slidably installed between two sliding grooves. An observation window in the shape of a transparent sheet is installed above the front end face of the protection plate. A cavity is formed at the right end of the rear end face of the protection plate, and fixing blocks are fixed on both side walls of the cavity.

[0009] A gear is rotatably installed at the center of the cavity. Rack gears are meshed on both sides of the gear, and the two rack gears are centrosymmetric. The ends of the rack gears are both fixed with sliders slidably connected to the cavity. Notches are formed on one side wall of each slider. Fixing rods are fixed to the two opposite ends of the two sliders, and the fixing rods are inserted and matched with corresponding fixing holes. Guide rods are fixed in the notches. The guide rods pass through the fixing blocks and are slidably connected to the fixing blocks. Springs are sleeved on the guide rods.

[0010] Preferably, the fixing strip and the connecting plate are integrally formed, and the included angle between the fixing strip and the connecting plate is 90°.

[0011] Preferably, limiting grooves are formed at both the upper and lower ends of the protection plate. Limiting blocks are fixed at the ends of the sliding grooves, and the limiting blocks are slidably connected to the limiting grooves.

[0012] Preferably, the observation window and the liquid crystal display screen are on the same horizontal plane, and the width of the observation window is greater than the width of the liquid crystal display screen.

[0013] Preferably, a handle is fixed at the left end of the front end face of the protection plate, and the handle is fixedly connected to the protection plate by bolts.

[0014] Preferably, the cross-sectional shape of the slider is U-shaped, and the slider is fixedly connected to the rack gear by bolts.

[0015] Preferably, an adjusting head is rotatably installed on the front end face of the protection plate, and a connecting shaft is coaxially fixed between the adjusting head and the gear.

[0016] Preferably, the cross-sectional shape of the protection plate is rectangular, and the protection plate is made of plastic.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. By providing the protection plate: A protection plate is provided on the front side of the main body of the host, so that the liquid crystal display screen and the like are hidden inside the protection plate, and the protection plate is placed in front of the liquid crystal display screen, so that external accidental knocks and the like cannot directly act on the liquid crystal display screen and other structures, thereby playing a protective role for the liquid crystal display screen and other structures, and further being beneficial to ensuring the stable operation of the integrated digital protection control device;

[0019] 2. By means of structures such as the set fixing rod, fixing hole, gear and rack, it is not only beneficial to stably install the protection plate on the front side of the liquid crystal display for protection, but also beneficial to push the protection plate to one side to adjust its position, facilitating operations on buttons, etc. This design meets the usage requirements of both protection and operation at the same time. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is an exploded schematic diagram of the overall structure of the present utility model;

[0022] Figure 3 It is a schematic diagram of a partial structure of the present utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the fixing strip in the present utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the protection plate in the present utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the slider in the present utility model.

[0026] In the figure:

[0027] 1. Main body of the host; 10. Liquid crystal display; 11. Button; 12. Fixing strip; 120. Connecting plate; 121. Chute; 122. Fixing hole; 123. Limiting block; 13. Protection plate; 130. Cavity; 131. Limiting groove; 132. Fixing block; 133. Handle; 134. Observation window; 14. Gear; 15. Rack; 16. Slider; 160. Notch; 161. Fixing rod; 17. Guide rod; 18. Spring; 19. Adjusting head. Detailed Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] This embodiment provides a technical solution:

[0030] Please refer to Figures 1-6As shown in the figure, an integrated digital protection and control device for DC feeders includes a main body 1 of the host. A liquid crystal display screen 10 is provided at the front end of the main body 1 of the host, and a plurality of buttons 11 are provided below the liquid crystal display screen 10. Fixed bars 12 are fixed at the upper and lower ends of the front end face of the main body 1 of the host. Slide grooves 121 are provided on the opposite end faces of the two fixed bars 12, and fixing holes 122 are provided at the right ends of the slide grooves. A connecting plate 120 is fixed at the right end between the two fixed bars 12. A protection plate 13 for protecting the liquid crystal display screen 10 and the buttons 11 is slidably installed between the two slide grooves 121. An observation window 134 in a transparent shape is installed above the front end face of the protection plate 13. A cavity 130 is provided at the right end of the rear end face of the protection plate 13. Fixed blocks 132 are fixed on both side walls of the cavity 130. A gear 14 is rotatably installed at the center of the cavity 130. Rack bars 15 are engaged with both sides of the gear 14, and the two rack bars 15 are centrosymmetric. Sliders 16 slidably connected to the cavity 130 are fixed at the ends of the rack bars 15. Notches 160 are provided on one side wall of each slider 16. Fixed rods 161 are fixed at the opposite ends of the two sliders 16, and the fixed rods 161 are inserted and matched with the corresponding fixing holes 122. Guide rods 17 are fixed in the notches 160. The guide rods 17 pass through the fixed blocks 132 and are slidably connected to the fixed blocks 132. Springs 18 are sleeved on the guide rods 17.

[0031] In this embodiment, the fixed bar 12 and the connecting plate 120 are of an integrally formed structure, and the included angle between the fixed bar 12 and the connecting plate 120 is 90°. The integrally formed structure enhances the integrity and stability of the structure, and the 90° included angle design makes the installation and layout of the fixed bar 12 and the connecting plate 120 more compact and reasonable, improving the space utilization rate.

[0032] In this embodiment, limiting grooves 131 are provided at both the upper and lower ends of the protection plate 13. Limiting blocks 123 are fixed at the ends of the slide grooves 121, and the limiting blocks 123 are slidably connected to the limiting grooves 131. This design not only realizes the smooth sliding of the protection plate 13 but also prevents the protection plate 13 from disengaging from between the two fixed bars 12.

[0033] In this embodiment, the observation window 134 and the liquid crystal display screen 10 are on the same horizontal plane, and the width of the observation window 134 is greater than the width of the liquid crystal display screen 10. This design facilitates the user to directly view the content of the liquid crystal display screen 10 through the observation window 134 without opening the protection plate 13, improving the convenience of use. The wider design of the observation window 134 reduces the visual blind area.

[0034] In this embodiment, a handle 133 is fixed at the left end of the front end face of the protection plate 13, and the handle 133 is fixed to the protection plate 13 by bolts. A convenient handheld part is also provided, enabling the user to easily open or close the protection plate 13.

[0035] In this embodiment, the cross-sectional shape of the slider 16 is U-shaped, and the slider 16 is fixedly connected to the rack 15 by bolts. The bolt connection has the advantages of reliable connection and easy disassembly and assembly, ensuring the stable use of the slider 16 and the rack 15.

[0036] In this embodiment, an adjusting head 19 is rotatably mounted on the front end face of the protection plate 13, and a connecting shaft is coaxially fixed between the adjusting head 19 and the gear 14. This design enables the rotation of the adjusting head 19 to directly drive the rotation of the gear 14, meeting the usage requirements of the protection plate 13.

[0037] In this embodiment, the cross-sectional shape of the protection plate 13 is rectangular, and the protection plate 13 is made of plastic. The rectangular design is conducive to the protection plate 13 to comprehensively protect the liquid crystal display screen 10, etc.; the selection of plastic material not only reduces the weight of the protection plate 13, but also improves the corrosion resistance and insulation performance of the protection plate 13, while reducing the cost. In addition, the plastic material also has a certain toughness, which can absorb external impacts to a certain extent and protect the internal components from damage.

[0038] It should be added that the slider 16 and the fixing rod 161 in this embodiment are integrally formed structures. This design makes the connection between the slider 16 and the fixing rod 161 more stable and reliable, thereby ensuring the insertion effect of the fixing rod 161 into the fixing hole 122 and ensuring the stable limit of the fixing rod 161 on the protection plate 13.

[0039] When the protection plate 13 needs to be opened, the user first rotates the adjusting head 19, and the adjusting head 19 drives the gear 14 to rotate. Since the gear 14 meshes with the racks 15 on both sides, the racks 15 on both sides move synchronously relative to each other. The racks 15 drive the slider 16 to slide at the same time. The slider 16 drives the fixing rod 161 to move and disengage from the fixing hole 122. At the same time, the guide rod 17 slides along the fixing block 132, and the spring 18 is compressed at the same time. At this time, the user pushes the handle 133, and the handle 133 drives the protection plate 13 to move to one side. The limiting groove 131 slides along the limiting block 123. When the end of the limiting groove 131 moves to the limiting block 123, the protection plate 13 can no longer slide. At this time, the protection plate 13 is opened, and the user can operate the button 11.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated digital protection and control device for a DC feeder, characterized in that: The host body (1) comprises a liquid crystal display screen (10) at the front end of the host body (1), and a plurality of buttons (11) are arranged below the liquid crystal display screen (10); The front end surface of the host body (1) is fixed with fixing strips (12) at the upper and lower ends, and two opposite end surfaces of the two fixing strips (12) are provided with sliding grooves (121), and the right end of the sliding groove is provided with a fixing hole (122); a connecting plate (120) is fixed at the right end between the two fixing strips (12); A protection plate (13) for protecting the liquid crystal display screen (10) and the button (11) is slidably installed between the two slide grooves (121); a transparent observation window (134) is installed above the front end surface of the protection plate (13); a cavity (130) is opened at the right end of the rear end surface of the protection plate (13); and fixing blocks (132) are fixed to both side walls of the cavity (130); A gear (14) is rotatably mounted at the center of the cavity (130), racks (15) are meshed on both sides of the gear (14), and the two racks (15) are symmetrical with the center, and sliders (16) are fixed at the ends of the racks (15) and are slidably connected to the cavity (130), and a notch (160) is provided on one side wall of the slider (16), and fixing rods (161) are fixed to two opposite ends of the two sliders (16), and the fixing rods (161) are plugged into the corresponding fixing holes (122); guide rods (17) are fixed in the notches (160), and the guide rods (17) pass through the fixing block (132) and are slidably connected to the fixing block (132), and springs (18) are sleeved on the guide rods (17).

2. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: The fixing strip (12) and the connecting plate (120) are an integrally formed structure, and the angle between the fixing strip (12) and the connecting plate (120) is 90°.

3. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: The upper and lower ends of the protection plate (13) are both provided with limiting grooves (131), the end of the sliding groove (121) is fixed with a limiting block (123), and the limiting block (123) is slidably connected to the limiting groove (131).

4. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: The observation window (134) and the liquid crystal display screen (10) are located on the same horizontal plane, and the width of the observation window (134) is greater than the width of the liquid crystal display screen (10).

5. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: A handle (133) is fixed to the left end of the front end surface of the protection plate (13), and the handle (133) is fixedly connected to the protection plate (13) by bolts.

6. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: The cross-section of the slider (16) is U-shaped, and the slider (16) is fixedly connected to the rack (15) via bolts.

7. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: An adjusting head (19) is rotatably mounted on the front end surface of the protection plate (13), and a connecting shaft is coaxially fixed between the adjusting head (19) and the gear (14).

8. The integrated digital protection and control device for DC feeder according to claim 1, characterized in that: The cross-sectional shape of the protection plate (13) is rectangular, and the protection plate (13) is a product made of plastic material.

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