Portable case of distributed photovoltaic grid-connected detection device

Abstract

This utility model discloses a portable chassis for a distributed photovoltaic grid-connected testing device, belonging to the field of chassis design technology. It includes a base, a top cover, and side covers. The base is used to install the core control board module and load module. The top cover is used to install the human-machine interface module and is fixed to the top of the base. The side covers are fixed to the sides of the base, forming a chassis structure together with the base and top cover. Rollers are rotatably installed at the bottom of the base. A telescopic pull rod is located inside the base. The base, top, and side covers of this utility model form a chassis structure. When the side covers are opened, the internal structure of the chassis is exposed, facilitating maintenance. The device is lightweight and compact. With rollers at the bottom and a telescopic pull rod at the top, the device can be easily dragged across the ground by gripping the handle and tilting it at a certain angle. This allows for long-distance dragging or transport by a single person, overcoming obstacles or navigating narrow passageways, solving the problem of inconvenient movement of existing equipment.

Description

Technical Field

[0001] This utility model relates to the field of chassis design technology, specifically to a portable chassis for a distributed photovoltaic grid-connected detection device. Background Technology

[0002] Distributed photovoltaic grid-connected testing devices are commonly used power testing equipment, weighing approximately 20kg to 50kg, classifying them as medium-sized devices. Because there are no standardized locations for their use, these devices can be deployed in towns or villages, or in hard-to-reach places such as narrow spaces or high elevations. Sometimes they may encounter uneven ground with ditches or narrow roads impassable by vehicles. However, existing power testing equipment is bulky, difficult to move and transport, and cannot flexibly adapt to various traffic conditions. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a portable chassis for a distributed photovoltaic grid-connected testing device. This chassis is compact, easy to move and maintain, and solves the problems of laborious relocation and inconvenient operation when bringing existing medium-sized power testing equipment to the field of use.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a portable chassis for a distributed photovoltaic grid-connected detection device, comprising:

[0005] The base box, used to install the core control board module and load module, includes a base plate, a front baffle, a rear baffle and side baffles. The front baffle and rear baffle are fixed to the front and rear ends of the base plate respectively, and the side baffles are fixed to the side of the base plate and fixedly connected to the front baffle and rear baffle.

[0006] The top cover is used to install the human-machine interface module and is fixed to the top of the base box;

[0007] Side cover plate, fixed to the side of the bottom box, together with the bottom box and top cover to form the box structure;

[0008] The rollers are mounted on the bottom of the base box and rotate.

[0009] The telescopic rod is installed inside the base box, and its top extends to the top cover.

[0010] Preferably, the core control board module includes a partition and a guide rail. The bottom box is provided with a partition for mounting the core control PCB board. A guide rail for mounting the protocol converter is fixed on the partition. The partition has multiple positioning holes.

[0011] Preferably, the two sides of the partition are fixed to the side baffle and the front baffle respectively, and the partition is parallel to the bottom plate.

[0012] Preferably, the load module includes:

[0013] Partition 2, the side baffle is fixed with a positioning strip, partition 2 is fixed on the positioning strip, and partition 2 is provided with multiple positioning holes 2;

[0014] The resistive load is fixed to the partition plate two by multiple bolts passing through the positioning hole two.

[0015] Preferably, the human-machine operation module includes an LCD display and multiple terminal switches, which are fixed to the top cover by bolts.

[0016] Preferably, a second guide rail is fixed on the rear baffle, and the second guide rail is used to install a residual current device and multiple miniature circuit breakers.

[0017] Preferably, the telescopic rod includes an inner rod and a sleeve, the bottom of the sleeve is fixed to the base plate, the inner rod is movably inserted into the sleeve, and the top of the inner rod extends from the top cover and is fixed with a handle.

[0018] Preferably, a cooling fan is fixed on the side baffle, and cooling holes are provided on the front baffle.

[0019] Preferably, both the front baffle and the rear baffle are provided with embedded handles.

[0020] Preferably, the rollers are omnidirectional casters, and there are four of them, which are respectively set at the four corners of the bottom of the base plate.

[0021] The beneficial effects of this utility model are as follows:

[0022] The bottom box, top cover and side cover plate of this utility model form a box structure. When the side cover plate is opened, the internal structure of the box is exposed, which is convenient for maintenance. The equipment is lightweight and compact. Rollers are installed at the bottom and a telescopic pull rod is provided at the top. By grabbing the handle with the arm and tilting it at a certain angle, the equipment can be easily dragged on the ground, realizing long-distance dragging or carrying by a single person, crossing obstacles on the ground or passing through narrow alleys, solving the problem of the inconvenience of moving existing equipment.

[0023] This utility model has two internal partitions, one for installing the core control board module and the other for installing the load module, which facilitates electrical wiring. The top cover is equipped with an LCD screen and terminal switches, making the human-machine interface intuitive and easy to operate. When the LCD screen is a large-size touch screen, other tools can be reduced. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A perspective view of the overall structure of a portable chassis for a distributed photovoltaic grid-connected detection device provided in an embodiment of this utility model.

[0026] Figure 2 This is a schematic diagram of the overall structure assembly of a portable chassis for a distributed photovoltaic grid-connected detection device provided in an embodiment of this utility model.

[0027] Figure 3 A perspective view of the top cover and human-machine operation module of a portable chassis for a distributed photovoltaic grid-connected detection device provided in this embodiment of the utility model.

[0028] Figure 4 A perspective view of the core control board module in a portable chassis of a distributed photovoltaic grid-connected detection device provided in an embodiment of this utility model.

[0029] Figure 5 A perspective view of the load module in the portable chassis of a distributed photovoltaic grid-connected detection device provided in an embodiment of this utility model.

[0030] Figure 6 This is a perspective view of the bottom box of a portable chassis for a distributed photovoltaic grid-connected detection device provided in an embodiment of the present invention.

[0031] Figure 7 A perspective view of the side cover of a portable chassis for a distributed photovoltaic grid-connected detection device provided in an embodiment of this utility model.

[0032] Figure 8 This is a schematic diagram of the portable chassis of a distributed photovoltaic grid-connected detection device provided in an embodiment of the present invention during dragging and moving.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Human-machine interface module; 11. Terminal switch; 12. Telescopic rod; 13. LCD display; 14. Top cover; 20. Core control board module; 21. Partition 1; 22. Core control PCB board; 23. Guide rail 1; 24. Protocol converter; 30. Base box; 31. Dual power switch; 32. Current transformer; 33. Miniature circuit breaker; 34. Residual current device; 35. Guide rail 2; 36. Embedded handle; 37. Cooling fan; 38. Base plate; 39. Universal casters; 40. Load module; 41. Partition 2; 42. Resistive load; 50. Side cover; 60. Handle; 70. Flooring. Detailed Implementation

[0035] 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.

[0036] Example 1:

[0037] like Figures 1 to 8 As shown, Embodiment 1 of this utility model provides a portable chassis for a distributed photovoltaic grid-connected testing device, including a base box 30, a top cover 14, and side covers 50. The base box 30 includes a base plate 38, a front baffle, a rear baffle, and side covers, each part being made from a single metal sheet through sheet metal processing and bending, forming a rectangular box structure with an open top and one side. The core control board module 20 and the load module 40 of the distributed photovoltaic grid-connected testing device are installed in the base box 30. The core control board module 20 includes a partition 21, which is parallel to the base plate 38. The two sides of the partition 21 are respectively fixed to the side covers and the front baffle by bolts. The partition 21 has multiple positioning holes, which can be used to firmly fix the core control PCB board to the partition 21 with bolts passing through the positioning holes. At the same time, the guide rail 23 is fixed to the partition 21 with bolts. The protocol converter 24 slides along the guide rail 23 and is embedded and fixed, ensuring that the electrical connection between the protocol converter 24 and the core control PCB board 22 is stable and reliable.

[0038] A vertical positioning strip is fixed on the side baffle. The partition 41 in the load module 40 is vertically arranged and fixed to the positioning strip with bolts. Multiple positioning holes 2 are evenly arranged on the partition 41. The bolt head at the end of the resistive load 42 passes through the positioning holes 2 and is fastened to the partition 41 with a nut, thus completing the installation of the load module 40.

[0039] The top cover 14 is made of continuously bent metal sheet, with an open bottom. The top cover 14 is bolted to the top of the base box 30. The LCD display 13 and multiple terminal switches 11 of the human-machine interface module 10 are also bolted to the top cover 14, facilitating intuitive parameter setting and operation control by the operator. The LCD display 13, terminal switches 11, and telescopic pull rod 12 on the top cover 14 are compactly arranged on the upper surface of the top cover 14, allowing the operator to perform all human-machine operations with one arm. A second guide rail 35 is fixed to the rear baffle, sequentially securing the residual current device 34 and multiple miniature circuit breakers 33 to the guide rail 35, ensuring electrical safety.

[0040] A cooling fan 37 is also installed on the side panel, and ventilation holes are opened on the front panel to form a good heat dissipation channel, ensuring that the internal components of the chassis can be effectively ventilated and cooled during operation. Embedded handles 36 are provided on the front and rear panels, making it easy for workers to hold the chassis and manually move it over ground obstacles. The side cover 50 is fixed to the front panel, rear panel, and base plate 38 with bolts, facilitating the opening of the side cover 50 for equipment maintenance.

[0041] Four swivel casters 39 are installed at the four corners of the bottom of the base plate 38. On normal flat roads, the equipment can be easily moved using the swivel casters 39. The bottom of the telescopic rod 12 is fixed to the base plate 38, and the inner rod is movably inserted into the rod sleeve. A handle 60 is fixed to the top of the inner rod, which extends from the top cover 14. When the operator grabs the handle 60, the telescopic rod 12 extends, tilting the machine box and allowing the equipment to be easily moved. When there are obstacles on the road or it is not suitable for dragging, the embedded handle 36 can be used to move the machine box.

[0042] Example 2:

[0043] like Figure 6 As shown, based on Embodiment 1, Embodiment 2 further includes a dual power switch 31 installed on the side baffle and a current transformer 32 installed on the rear baffle. The connections of the electrical components in this invention, such as the terminal switch 11, core control PCB board 22, protocol converter 24, dual power switch 31, current transformer 32, miniature circuit breaker 33, leakage current protector 34, and resistive load 42, are all based on the same connection principle and structure as existing distributed photovoltaic grid-connected detection devices. The focus of this invention is on optimizing the distribution of electrical components and the portable design of the chassis.

[0044] The surfaces of partition 21 of the core control board module 20 and partition 41 of the load module 40 are coated with an insulating and anti-corrosion coating to enhance their insulation and corrosion resistance and extend the service life of the equipment. The LCD display 13 of the human-machine operation module 10 adopts a large-size touch screen, allowing operators to complete parameter settings, data viewing, and other operations by touch without the need for other tools, simplifying the operation process and improving work efficiency.

[0045] Example 3:

[0046] Based on Embodiments 1 and 2, the cooling fan 37 in this invention adopts an intelligent temperature-controlled fan, which automatically adjusts its speed according to the internal temperature of the chassis, reducing energy consumption and noise while ensuring heat dissipation. The terminal switch 11 of the human-machine interface module 10 adopts a waterproof and dustproof switch to ensure reliable operation in harsh environments.

[0047] like Figure 2 As shown, the assembly is performed sequentially, leaving ample operating space for electrical wiring. First, the core control board module 20 is bolted to the base box 30. Then, the load module 40 is bolted to the base box 30. Next, the top of the second baffle is bolted to the side of the first baffle. Then, the top cover 14 with the human-machine interface module 10 installed is bolted to the top of the base box 30. Finally, the side cover 50 is bolted to the side of the base box 30, making the entire equipment a closed enclosure structure.

[0048] like Figure 8 As shown, when the assembled equipment needs to be moved, simply extend the telescopic rod 12 on the top cover 14, grab the handle 60 with your arm and tilt it at a certain angle, and it can be dragged across the surface of the floor 70. When encountering an obstacle that cannot be dragged, retract the telescopic rod 12, grab the embedded handle 36, lift the equipment, and cross the obstacle.

[0049] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A portable chassis for a distributed photovoltaic grid-connected monitoring device, characterized in that, include: The base box, used to install the core control board module and load module, includes a base plate, a front baffle, a rear baffle and side baffles. The front baffle and rear baffle are fixed to the front and rear ends of the base plate respectively, and the side baffles are fixed to the side of the base plate and fixedly connected to the front baffle and rear baffle. The top cover is used to install the human-machine interface module and is fixed to the top of the base box; Side cover plate, fixed to the side of the bottom box, together with the bottom box and top cover to form the box structure; The rollers are mounted on the bottom of the base box and rotate. The telescopic rod is installed inside the base box, and its top extends to the top cover.

2. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The core control board module includes a partition and a guide rail. The bottom box is provided with a partition for mounting the core control PCB board. A guide rail for mounting the protocol converter is fixed on the partition. The partition has multiple positioning holes.

3. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 2, characterized in that, The two sides of the partition are fixed to the side baffle and the front baffle, respectively, and the partition is parallel to the bottom plate.

4. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The load module includes: Partition 2, the side baffle is fixed with a positioning strip, partition 2 is fixed on the positioning strip, and partition 2 is provided with multiple positioning holes 2; The resistive load is fixed to the partition plate two by multiple bolts passing through the positioning hole two.

5. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The human-machine operation module includes an LCD display and multiple terminal switches, which are fixed to the top cover by bolts.

6. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The rear baffle is fixed with a second guide rail, which is used to install a residual current device and multiple miniature circuit breakers.

7. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The telescopic rod includes an inner rod and a sleeve. The bottom of the sleeve is fixed to the base plate, the inner rod is movably inserted into the sleeve, and the top of the inner rod extends from the top cover and is fixed with a handle.

8. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, A cooling fan is fixed on the side baffle, and a cooling hole is provided on the front baffle.

9. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, Both the front and rear baffles are equipped with embedded handles.

10. The portable chassis of the distributed photovoltaic grid-connected testing device as described in claim 1, characterized in that, The rollers are omnidirectional casters, and there are four in total, which are respectively located at the four corners of the bottom of the base plate.

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