Line loss analyzer with protection function for power marketing

Abstract

The application provides a line loss analyzer for power marketing with a protection function, and relates to the technical field of electric power measuring instruments, which comprises a protection box, the inside of the protection box is provided with a bottom plate, the top of the bottom plate is placed with a tester body, the two sides of the bottom plate are fixed with side frames, the top of the side frames is inserted with locking bolts, the locking bolts are locked with the top of the tester body, the protection box comprises a lower frame, the top of the lower frame is provided with four side plates, the top of the lower frame is provided with four corner blocks, compared with the prior art, the tester body is stored in the protection box and is protected from collision by four air bags, in use, the upper layer of the protection box is pulled open and slides down to the outside of the lower frame, the tester body is lifted by a driving assembly, the connecting port of the tester body is exposed, the cable is conveniently connected, and the protection box does not interfere with the tester body, and the box body does not need to be disassembled.

Description

Technical Field

[0001] This invention relates to the field of power measurement instrument technology, specifically to a line loss analyzer for power marketing with protective functions. Background Technology

[0002] Electricity marketing refers to the process by which power companies, in a changing market environment, aim to meet people's electricity consumption needs. This involves a series of market-related business activities to provide electricity products and related services that satisfy consumer demand, thereby achieving the company's goals. Electricity marketing has a broad scope, including electrical instruments and meters such as power load control systems; solar energy flow density and solar concentrator accuracy measurement and analysis instruments; electricity meters; and automatic meter reading systems. Among these, line loss analyzers are one of the electrical devices used in electricity marketing. In electricity marketing, line loss needs to be calculated during power transmission. Line loss refers to energy loss in the form of heat, and preventing excessive line loss from causing power loss and waste is crucial. Current methods involve installing line loss analyzers in power lines. The analyzers collect data, perform comprehensive calculations, and then transmit the signals to the main control system for monitoring, enabling staff to take timely and effective measures.

[0003] Existing line loss analyzers require connection to test cables during use. As a standalone device, the analyzer is easily damaged by collisions during transport or use. The common method is to store it in a special storage box, but this requires taking the analyzer out each time it is used, which is inconvenient. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a power marketing line loss analyzer with protective functions to solve the problems mentioned in the background. The present invention has a novel structure. The tester body is stored inside a protective box and is protected against collisions by four airbags. In use, the upper layer of the protective box is pulled open and slid down to the outside of the lower frame. The tester body is raised by the drive component, exposing the connection port of the tester body for easy connection to cables without interference from the protective box, and without the need to disassemble the box.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power marketing line loss analyzer with protective functions, comprising a protective box, wherein a base plate is provided inside the protective box, and the tester body is placed on the top of the base plate; side frames are fixed on both sides of the base plate, and locking bolts are inserted into the top of the side frames, the locking bolts being locked to the top of the tester body; the protective box includes a lower frame, wherein four side plates are provided on the four sides of the top of the lower frame, and four corner blocks are provided on the right-angled sides of the top of the lower frame; insert plates are slidably inserted into both ends of the side plates, and the insert plates are fixedly connected to the corner blocks; airbags are fixed on the inner walls of the four sides of the lower frame, and the top of the airbags... Fixed to the top inner wall of the side panel, the bottom of the lower frame is provided with a base column, and an air cylinder is fixed inside the base column. An air tube is fixed to the top of one end of the air cylinder and is fixedly connected to the air bag. The bottom of the lower frame is provided with a drive assembly, which includes a bidirectional screw. The bidirectional screw is rotatably installed on the bottom inner wall of the lower frame, and the two ends of the bidirectional screw pass through the lower frame and are fixed with shafts. A winding shaft is fixed on the surface of the shaft, and a pull rope is wound on the winding shaft and fixedly connected to the bottom of the side panel. Rotary wheels are rotatably installed between the two base columns at the bottom of the lower frame. Ring ropes are sleeved on the four rotating wheels and slide through the inside of the air cylinder in a sealed manner.

[0006] Furthermore, the outer wall of the lower frame is provided with an outer sliding groove on the inner side of the two right angles of the corner block, and a protrusion is fixed on the bottom surface of the inner side of the two right angles of the corner block. The protrusion slides along the inside of the outer sliding groove. A contact plate is slidably connected inside the outer sliding groove, and a return spring is fixed between the bottom of the contact plate and the bottom of the outer sliding groove.

[0007] Furthermore, a cover plate is rotatably mounted on the top of the side plate on one side of the back of the tester body, and a rotating plate is rotatably mounted on the top of the side plate on one side of the front of the tester body. The cover plate has a slot corresponding to the position of the rotating plate, and a handle is fixed on the outer surface of the cover plate.

[0008] Furthermore, the drive assembly also includes a second gear, the top of a set of rotating wheels at the bottom of the lower frame is fixed with the second gear, and a first gear is meshed with one side of the second gear. The first gear is rotatably mounted at the bottom of the lower frame through a bearing seat.

[0009] Furthermore, a second bevel gear is fixed to the top of the first gear, and the top of the second bevel gear is meshed with the first bevel gear. The first bevel gear is rotatably mounted on the outer wall of the lower frame, and a transmission belt is installed at the outer end of the first bevel gear. The other end of the transmission belt is fitted with a pulley on the surface of the shaft.

[0010] Furthermore, the two ends of the rotating wheel corresponding to the loop rope are fixed with limit posts, and the loop rope slides in contact with the inner side of the limit posts. A piston plate is fixed inside the air cylinder, and the piston plate is fixedly sleeved on the loop rope.

[0011] Furthermore, a right-angle plate is fixed on the inner wall of the top of the lower frame at the position corresponding to the corner block, and the right-angle plate has slots at the positions of the two protrusions of the corner block.

[0012] Furthermore, two slide rails are fixed on the inner wall of the bottom of the lower frame, and two sets of slide plates are slidably sleeved on the surface of the slide rails. The two sets of slide plates are threaded onto the surface of the bidirectional screw. The top of the slide plate is symmetrically connected to a support rod through a pivot, and the top of the support rod is rotatably installed on the bottom of the base plate through a pivot. Inner sliding grooves are opened on the inner walls of the four right-angled sides of the lower frame. A slider is fixed on the base plate at the position corresponding to the inner sliding groove, and the slider slides along the inner sliding groove.

[0013] Furthermore, a contact switch is fixedly installed at the bottom of the lower frame on one side of the slide rail, and a contact block is fixed at the position of one of the contact switches on the base plate.

[0014] Furthermore, an air inlet is provided on the bottom outer wall of the lower frame, and an air outlet is provided on the bottom inner wall of the lower frame. A cooling fan is installed inside the air outlet and the air inlet of the lower frame.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention uses two sliding plates and a bidirectional screw to slide along a slide rail, while a support rod lifts the base plate upwards. The sliders at the four corners of the base plate slide along the inner slide groove to keep the base plate moving vertically. As the upper layer of the protective box slides downwards to wrap around the lower frame, the plug-in end of the tester body is exposed, facilitating the connection of the cable to the tester body.

[0017] 2. In this invention, after the upper part of the protective box is unfolded, rotating the bidirectional screw lifts the tester body upwards, while the shaft drives the winding shaft to rotate. The pull rope winds up and pulls the side plate downwards. At the same time, the shaft, through the transmission belt, causes the first bevel gear to rotate and mesh with the second bevel gear. The second bevel gear drives the first gear to rotate, and the meshing of the first and second gears drives the rotating wheel to rotate. Through the frictional contact between the loop rope and the rotating wheel, the piston plate inside each air cylinder is driven to move, drawing the gas in the airbag back into the air cylinder. At this time, the airbag contracts, facilitating the opening of the protective box and the delivery of the tester body.

[0018] 3. When the bidirectional screw rotates, the gas in the air cylinder is pushed into the airbag by the piston plate. The airbag inflates and after the upper layer of the protective box is restored to a vertical alignment with the lower frame, the airbag provides anti-collision protection for the tester body from four sides. The limiting posts on both sides of the wheel ensure that the loop rope has sufficient contact area with the wheel, so that the rotation of one wheel can drive the rotation of the other three wheels through the loop rope.

[0019] 4. After the tester body is retracted into the protective box, the cover plate is rotated to cover the top of the other side plate. The rotating plate passes through the corresponding slot shape, and then the rotating plate is rotated to misalign with the slot, thereby forming a snap-fit ​​between the cover plate and the side plate. This keeps the upper layer of the protective box, which is surrounded by the entire side plate and corner block, from becoming loose. The handle makes it easy to move the carrying device.

[0020] 5. Initially, the corner block aligns with the right-angle end of the lower frame. At this point, the insert plate retracts into the side plate, which also aligns with the side plate of the lower frame. The protrusion on the inner side of the corner block is inserted into the slot of the right-angle plate, strengthening the connection with the lower frame. During use, the corner block and side plate are pulled outward through the buckle groove on the outer side of the corner block until the two inner protrusions of the corner block align with the outer sliding groove of the lower frame. Subsequently, under the traction of the drive assembly, the side plate and corner block slide downward. The protrusion slides downward along the outer sliding groove and contacts the contact plate, squeezing the reset spring and limiting and guiding the movement direction and path of the corner block and side plate.

[0021] 6. Compared with the prior art, the present invention stores the tester body inside the protective box and protects the tester from collision with four airbags. When in use, the upper layer of the protective box is pulled open and slid down to the outside of the lower frame. The tester body is raised by the drive component, exposing the connection port of the tester body, which is convenient for connecting to the cable and will not be interfered with by the protective box, and there is no need to disassemble the box. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall front structure of a power marketing line loss analyzer with protective functions according to the present invention.

[0023] Figure 2 This is a schematic diagram of the overall back structure of a power marketing line loss analyzer with protective function according to the present invention.

[0024] Figure 3 This is a schematic diagram of the bottom structure of the protective box of a power marketing line loss analyzer with protective function according to the present invention;

[0025] Figure 4 This is a schematic diagram of the drive component structure of a power marketing line loss analyzer with protective function according to the present invention;

[0026] Figure 5 This is a schematic diagram showing the connection between the first gear and the second gear of a power marketing line loss analyzer with protective function according to the present invention.

[0027] Figure 6 This is a schematic diagram of the internal structure of the base column of a power marketing line loss analyzer with protective function according to the present invention.

[0028] Figure 7This is a schematic diagram of the outer right-angled end structure of the lower frame of a power marketing line loss analyzer with protective function according to the present invention.

[0029] Figure 8 This is a schematic diagram of the internal structure of the lower frame of a power marketing line loss analyzer with protective function according to the present invention;

[0030] Figure 9 This is a schematic diagram of the bottom structure of the base plate of a power marketing line loss analyzer with protective function according to the present invention;

[0031] Figure 10 This is a schematic diagram showing the separation of the upper and lower ends of the protective box of a power marketing line loss analyzer with protective function according to the present invention.

[0032] Figure 11 This is a schematic diagram of the internal connection structure between the airbag and the protective box of a power marketing line loss analyzer with protective function according to the present invention.

[0033] In the diagram: 1. Protective box; 11. Air inlet; 12. Lower frame; 13. Side panel; 14. Corner block; 15. Insert plate; 16. Clip groove; 17. Outer slide groove; 18. Contact plate; 19. Return spring; 110. Right angle plate; 111. Slot; 112. Air outlet; 113. Slide rail; 114. Slide plate; 115. Support rod; 116. Contact switch; 117. Protrusion; 118. Rotating plate; 2. Tester body; 21. Base plate; 22. Side frame; 23. Locking bolt; 24. Contact block; 25. Inner groove; 26. Slider; 3. Cover plate; 31. Slot; 32. Handle; 4. Drive assembly; 41. Shaft; 42. Rewinding shaft; 43. Pull rope; 44. Drive belt; 45. First bevel gear; 46. Second bevel gear; 47. First gear; 48. Second gear; 49. Rotary wheel; 410. Limiting post; 411. Ring rope; 412. Double-acting screw; 5. Base post; 51. Air cylinder; 52. Piston plate; 53. Air pipe; 54. Airbag. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Please see Figures 1 to 11This invention provides a technical solution: a power marketing line loss analyzer with protective function, comprising a protective box 1, wherein a base plate 21 is provided inside the protective box 1, and a tester body 2 is placed on the top of the base plate 21; side frames 22 are fixed on both sides of the base plate 21, and locking bolts 23 are inserted into the top of the side frames 22, the locking bolts 23 being locked to the top of the tester body 2; the protective box 1 includes a lower frame 12, wherein four side plates 13 are provided on the four sides of the top of the lower frame 12, and four corner blocks 1 are provided on the right-angled sides of the top of the lower frame 12. 4. Insert plates 15 are slidably inserted into both ends of the side plate 13, and the insert plates 15 are fixedly connected to the corner blocks 14. Airbags 54 are fixed on the inner walls of the four sides of the lower frame 12, and the top of the airbags 54 is fixed to the top inner wall of the side plate 13. The bottom of the lower frame 12 is provided with a bottom post 5, and an air cylinder 51 is fixed inside the bottom post 5. An air tube 53 is fixed to the top of one end of the air cylinder 51, and the air tube 53 is fixedly connected to the airbag 54. The bottom of the lower frame 12 is provided with a driving assembly 4, which includes a bidirectional screw 412. The lower frame 12... A bidirectional screw 412 is rotatably mounted on the bottom inner wall of the device, and both ends of the bidirectional screw 412 extend out of the lower frame 12 and are fixed to a shaft 41. A winding shaft 42 is fixed to the surface of the shaft 41, and a pull rope 43 is wound on the winding shaft 42. The pull rope 43 is fixedly connected to the bottom of the side plate 13. A rotating wheel 49 is rotatably mounted between two bottom posts 5 at the bottom of the lower frame 12. A loop rope 411 is sleeved on the four rotating wheels 49. The loop rope 411 slides and seals through the inside of the air cylinder 51. When using the device, the tester body 2 is secured by locking bolts 23. The tester is fixed inside the base plate 21 and side frame 22 and stored in the protective box 1. When in use, the cover plate 3 is opened, and the tester body 2 is lifted upward by the drive component 4. The upper layer of the protective box 1 unfolds and slides downward, wrapping around the lower frame 12 until the plug-in end of the tester body 2 is fully exposed, which facilitates connection with the cable. The power marketing coverage includes electrical instruments and meters such as power load control systems; solar energy flow density and solar concentrator accuracy measurement and analysis instruments and energy meters, etc. Among them, the tester body 2 in this solution is only used for line loss analysis testing of one of them.

[0036] In this embodiment, an outer sliding groove 17 is provided on the inner side of the two right angles of the corner block 14 on the outer wall of the lower frame 12. A protrusion 117 is fixed on the bottom surface of the two right angles of the corner block 14, and the protrusion 117 slides along the inside of the outer sliding groove 17. A contact plate 18 is slidably connected inside the outer sliding groove 17, and a return spring 19 is fixed between the bottom of the contact plate 18 and the bottom of the outer sliding groove 17. A right-angle plate 110 is fixed on the inner wall of the top of the lower frame 12 at the position corresponding to the corner block 14, and a slot 111 is provided on the right-angle plate 110 at the position corresponding to the two protrusions 117 of the corner block 14. Initially, the corner block 14 corresponds to the right angle end of the lower frame 12, and at this time the slot 111 is inserted. 15 is inserted into the side plate 13, which corresponds to the side plate 13 of the lower frame 12. The protrusion 117 on the inner side of the corner block 14 is inserted into the slot 111 of the right angle plate 110 to strengthen the connection with the lower frame 12. In use, the corner block 14 and the side plate 13 are pulled outward by the buckle 16 on the outer side of the corner block 14 until the two inner protrusions 117 of the corner block 14 correspond to the outer slide groove 17 of the lower frame 12. Then, under the traction of the drive assembly 4, the side plate 13 and the corner block 14 slide downward. The protrusion 117 slides downward along the outer slide groove 17 and contacts the contact plate 18 to squeeze the reset spring 19, thereby limiting and guiding the movement direction and path of the corner block 14 and the side plate 13.

[0037] In this embodiment, a cover plate 3 is rotatably mounted on the top of the side plate 13 on the back side of the tester body 2, and a rotating plate 118 is rotatably mounted on the top of the side plate 13 on the front side of the tester body 2. The cover plate 3 has a slot 31 corresponding to the position of the rotating plate 118. A handle 32 is fixed on the outer surface of the cover plate 3. The slot 31 on the cover plate 3 and the rotating plate 118 on the side plate 13 are common snap-fit ​​structures. After the tester body 2 is retracted into the protective box 1, the cover plate 3 is rotated to cover the top of the other side plate 13, and the rotating plate 118 is passed through the slot 31. Then, the rotating plate 118 is rotated to misalign with the slot 31, thereby forming a snap-fit ​​between the cover plate 3 and the side plate 13. This keeps the upper layer of the protective box 1 formed by the entire side plate 13 and the corner block 14 from loosening. The handle 32 facilitates the movement of the carrying device. The tester body 2 in this solution belongs to special electrical instruments and meters such as power load control systems, and has an automatic meter reading system similar to an electricity meter, which can provide feedback and record the test data.

[0038] In this embodiment, the drive assembly 4 further includes a second gear 48. The top of a set of rotating wheels 49 at the bottom of the lower frame 12 is fixed to the second gear 48, and a first gear 47 is meshed with one side of the second gear 48. The first gear 47 is rotatably mounted on the bottom of the lower frame 12 via a bearing seat. A second bevel gear 46 is fixed to the top of the first gear 47, and a first bevel gear 45 is meshed with the top of the second bevel gear 46. The first bevel gear 45 is rotatably mounted on the outer wall of the lower frame 12. A transmission belt 44 is installed at the outer end of the device. The pulley at the other end of the transmission belt 44 is sleeved on the surface of the shaft 41. Limiting posts 410 are fixed at both ends of the rotating wheel 49 corresponding to the ends through which the loop rope 411 passes, and the loop rope 411 slides in contact with the inner side of the limiting post 410. A piston plate 52 is fixed inside the air cylinder 51, and the piston plate 52 is fixedly sleeved on the loop rope 411. After the upper part of the protective box 1 is unfolded, rotating the bidirectional screw 412 lifts the tester body 2 upward, while the shaft 41 drives the winding shaft 42 to rotate, pulling the rope 411. 3. The winding traction side plate 13 moves downward, and at the same time, the shaft 41, through the transmission belt 44, causes the first bevel gear 45 to rotate and mesh with the second bevel gear 46. The second bevel gear 46 drives the first gear 47 to rotate, and the first gear 47 meshes with the second gear 48 to drive the rotating wheel 49 to rotate. Through the frictional contact between the loop rope 411 and the rotating wheel 49, the piston plate 52 in each air cylinder 51 is driven to move, drawing the gas in the airbag 54 back into the air cylinder 51. At this time, the airbag 54 contracts, facilitating the opening of the protective box 1 and testing. Similarly, when the instrument body 2 is delivered, the gas in the air cylinder 51 is pushed into the airbag 54 by the piston plate 52 when the bidirectional screw 412 rotates. The airbag 54 inflates and, after the upper layer of the protective box 1 returns to its vertical alignment with the lower frame 12, the airbag 54 provides anti-collision protection for the instrument body 2 from four sides. The limiting posts 410 on both sides of the rotating wheel 49 ensure that the ring rope 411 and the rotating wheel 49 have sufficient contact area, so that the rotation of one rotating wheel 49 can drive the rotation of the other three rotating wheels 49 through the ring rope 411.

[0039] In this embodiment, two slide rails 113 are fixed on the inner wall of the bottom of the lower frame 12, and two sets of sliding plates 114 are slidably sleeved on the surface of the slide rails 113. The two sets of sliding plates 114 are threaded onto the surface of the bidirectional screw 412. The top of the sliding plate 114 is symmetrically connected to a support rod 115 via a pivot, and the top of the support rod 115 is rotatably mounted on the bottom of the base plate 21 via a pivot. Inner grooves 25 are formed on the inner walls of the four right-angled sides of the lower frame 12. A slider 26 is fixed on the base plate 21 at the position corresponding to the inner groove 25, and the slider 26 slides along the inner groove 25. A contact switch 116 is fixedly installed on one side of the slide rails 113 at the bottom of the lower frame 12. A contact block 24 is fixed on the base plate 21 at the position of one contact switch 116. An air inlet 11 is formed on the outer wall of the bottom of the lower frame 12, and an air outlet 112 is formed on the inner wall of the bottom of the lower frame 12. The lower frame 12 is located between the air outlet 112 and the air inlet 112. A cooling fan is installed inside the port 11. When the bidirectional screw 412 is rotated, the two slide plates 114 cooperate with the bidirectional screw 412 to slide along the slide rail 113. At the same time, the support rod 115 lifts the base plate 21 upward. The sliders 26 at the four corners of the base plate 21 slide along the inner slide groove 25 to keep the base plate 21 moving vertically. As the upper layer of the protective box 1 slides downward to wrap around the lower frame 12, the plug-in end of the tester body 2 is exposed, which facilitates the connection of the cable to the tester body 2. When the base plate 21 is attached to the bottom of the lower frame 12, the tester body 2 is stored inside the protective box 1. At this time, the contact block 24 of the base plate 21 contacts the contact switch 116, and the cooling fan at the bottom of the lower frame 12 is not turned on. After the base plate 21 moves upward and the tester body 2 leaves the interior of the protective box 1, the contact block 24 separates from the contact switch 116, and controls the cooling fan to turn on. The air inlet 11, the air outlet 112 and the hollow base plate 21 blow air to cool the tester body 2.

[0040] When using the device, the tester body 2 is fixed inside the base plate 21 and side frame 22 by locking bolts 23 and stored in the protective box 1. Initially, the corner block 14 corresponds to the right-angle end of the lower frame 12. At this time, the insert plate 15 is retracted into the side plate 13, and the side plate 13 also corresponds to the side plate 13 of the lower frame 12. The protrusion 117 on the inner side of the corner block 14 is inserted into the slot 111 of the right-angle plate 110 to strengthen the connection with the lower frame 12. During use, the corner block 14 and the side plate 13 are pulled outward by the buckle 16 on the outer side of the corner block 14 until the two inner protrusions 117 of the corner block 14 correspond to the outer sliding groove 17 of the lower frame 12. Then, under the traction of the drive assembly 4, the side plate 13 and the corner block 14 move towards the lower frame 12. Sliding downwards, the protrusion 117 slides down along the outer groove 17 and contacts the contact plate 18, squeezing the reset spring 19. This limits and guides the movement direction and path of the corner block 14 and the side plate 13. Opening the cover plate 3, rotating the bidirectional screw 412, the shaft 41 drives the winding shaft 42 to rotate, and the pull rope 43 winds up and pulls the side plate 13 downwards. At the same time, the shaft 41, through the transmission belt 44, causes the first bevel gear 45 to rotate and mesh with the second bevel gear 46. The second bevel gear 46 drives the first gear 47 to rotate, and the first gear 47 meshes with the second gear 48 to drive the rotating wheel 49 to rotate. The piston plate 5 in each air cylinder 51 is driven by the frictional contact between the ring rope 411 and the rotating wheel 49. 2. The gas inside the airbag 54 is drawn back into the air cylinder 51, causing the airbag 54 to contract, facilitating the opening of the protective box 1 and the delivery of the testing instrument body 2. Similarly, when the bidirectional screw 412 rotates, the piston plate 52 pushes the gas inside the air cylinder 51 into the airbag 54, causing the airbag 54 to inflate. After the upper layer of the protective box 1 returns to its perpendicular alignment with the lower frame 12, the airbag 54 provides anti-collision protection for the testing instrument body 2 from four sides. The two sliding plates 114 cooperate with the bidirectional screw 412 to slide along the slide rail 113, while the support rod 115 lifts the base plate 21 upwards. The sliders 26 at the four corners of the base plate 21 slide along the inner slide groove 25. Keeping the base plate 21 moving vertically, the upper layer of the protective box 1 slides down to wrap around the lower frame 12, exposing the plug-in end of the tester body 2, facilitating cable connection to the tester body 2. When the base plate 21 is attached to the bottom of the lower frame 12, the tester body 2 is housed inside the protective box 1. At this time, the contact block 24 of the base plate 21 contacts the contact switch 116, and the cooling fan at the bottom of the lower frame 12 is not turned on. After the base plate 21 moves upward and the tester body 2 leaves the protective box 1, the contact block 24 separates from the contact switch 116, controlling the cooling fan to turn on, and blowing air to cool the tester body 2 through the air inlet 11, the air outlet 112, and the hollow base plate 21.

[0041] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power marketing line loss analyzer with protective function, comprising a protective box (1), characterized in that: The protective box (1) has a base plate (21) inside, and the tester body (2) is placed on the top of the base plate (21). Side frames (22) are fixed on both sides of the base plate (21), and locking bolts (23) are inserted into the top of the side frames (22). The locking bolts (23) are locked to the top of the tester body (2). The protective box (1) includes a lower frame (12), and four side plates are provided on the four sides of the top of the lower frame (12). 13) The top right-angled edge of the lower frame (12) is provided with four corner blocks (14). The two ends of the side plate (13) are slidably inserted with insert plates (15), and the insert plates (15) are fixedly connected to the corner blocks (14). Airbags (54) are fixed on the inner walls of the four sides of the lower frame (12), and the top of the airbags (54) is fixed on the inner wall of the topmost part of the side plate (13). The bottom of the lower frame (12) is provided with a bottom post (5), and the bottom post (5) is inside An air cylinder (51) is fixed, and an air pipe (53) is fixed to the top of one end of the air cylinder (51). The air pipe (53) is fixedly connected to the air bag (54). A drive assembly (4) is provided at the bottom of the lower frame (12). The drive assembly (4) includes a bidirectional screw (412). The bidirectional screw (412) is rotatably installed on the bottom inner wall of the lower frame (12). The two ends of the bidirectional screw (412) pass through the lower frame (12) and are fixed with shafts (41). A winding shaft (42) is fixed on the surface of the shaft (41). A pull rope (43) is wound on the winding shaft (42). The pull rope (43) is fixedly connected to the bottom of the side plate (13). A rotating wheel (49) is rotatably installed between two bottom columns (5) at the bottom of the lower frame (12). A ring rope (411) is sleeved on the four rotating wheels (49). The ring rope (411) slides and seals through the inside of the air cylinder (51).

2. The power marketing line loss analyzer with protective function according to claim 1, characterized in that: The outer wall of the lower frame (12) is provided with an outer groove (17) on the inner side of the two right angles of the corner block (14). A protrusion (117) is fixed on the bottom surface of the two right angles of the corner block (14), and the protrusion (117) slides along the inner side of the outer groove (17). A contact plate (18) is slidably connected inside the outer groove (17), and a return spring (19) is fixed between the bottom of the contact plate (18) and the bottom of the outer groove (17).

3. The power marketing line loss analyzer with protective function according to claim 1, characterized in that: A cover plate (3) is rotatably installed on the top of the side plate (13) on the back side of the tester body (2), and a rotating plate (118) is rotatably installed on the top of the side plate (13) on the front side of the tester body (2). A slot (31) is provided on the cover plate (3) corresponding to the position of the rotating plate (118), and a handle (32) is fixed on the outer surface of the cover plate (3).

4. A power marketing line loss analyzer with protective function according to claim 1, characterized in that: The drive assembly (4) also includes a second gear (48). The top of a set of rotating wheels (49) at the bottom of the lower frame (12) is fixed with the second gear (48), and a first gear (47) is meshed with one side of the second gear (48). The first gear (47) is rotatably mounted at the bottom of the lower frame (12) through a bearing seat.

5. A power marketing line loss analyzer with protective function according to claim 4, characterized in that: The top of the first gear (47) is fixed with a second bevel gear (46), the top of the second bevel gear (46) is meshed with a first bevel gear (45), the first bevel gear (45) is rotatably mounted on the outer wall of the lower frame (12), the outer end of the first bevel gear (45) is equipped with a transmission belt (44), and the other end of the transmission belt (44) is fitted with a pulley on the surface of the shaft (41).

6. A power marketing line loss analyzer with protective function according to claim 5, characterized in that: The two ends of the wheel (49) corresponding to the loop (411) are fixed with limit posts (410), and the loop (411) slides in contact with the inner side of the limit post (410). The air cylinder (51) has a piston plate (52) fixed inside, and the piston plate (52) is fixedly sleeved on the loop (411).

7. A power marketing line loss analyzer with protective function according to claim 2, characterized in that: A right-angle plate (110) is fixed on the inner wall of the top of the lower frame (12) at the position corresponding to the corner block (14), and the right-angle plate (110) is provided with slots (111) at the positions of the two protrusions (117) of the corner block (14).

8. A power marketing line loss analyzer with protective function according to claim 1, characterized in that: Two slide rails (113) are fixed on the inner wall of the bottom of the lower frame (12), and two sets of slide plates (114) are slidably sleeved on the surface of the slide rails (113). The two sets of slide plates (114) are threaded onto the surface of the bidirectional screw (412). The top of the slide plate (114) is symmetrically connected to a support rod (115) through a rotating shaft. The top of the support rod (115) is rotatably installed on the bottom of the base plate (21) through a rotating shaft. Inner slide grooves (25) are provided on the inner walls of the four right-angled sides of the lower frame (12). A slider (26) is fixed on the base plate (21) at the position corresponding to the inner slide groove (25), and the slider (26) slides along the inner slide groove (25).

9. A power marketing line loss analyzer with protective function according to claim 8, characterized in that: The bottom of the lower frame (12) is fixedly installed with a contact switch (116) on one side of the slide rail (113), and the base plate (21) is fixed with a contact block (24) at the position of a contact switch (116).

10. A power marketing line loss analyzer with protective function according to claim 1, characterized in that: The bottom outer wall of the lower frame (12) is provided with an air inlet (11), and the bottom inner wall of the lower frame (12) is provided with an air outlet (112). A cooling fan is installed inside the air outlet (112) and the air inlet (11) of the lower frame (12).

Images