Portable maintenance power box

Abstract

The invention discloses a portable maintenance power box, and relates to the field of maintenance power boxes, the portable maintenance power box comprises an insulation box body and an insulation box cover, the insulation box body and the insulation box cover are rotatably connected, an air switch is installed in the insulation box body, and a double-throw knife switch is arranged on one side of the air switch. According to the cable winding device, by arranging the winding roll in the automatic winder, winding of a cable is achieved, when the cable is pulled out of the winder through elastic deformation of the volute spiral spring, the volute spiral spring rotates around the fixing shaft along with the winding roll, the volute spiral spring stores energy, and therefore driving force is provided when the cable is wound, automatic winding and unwinding of the cable are achieved, and the cable winding device is convenient to use. The cable laying time is effectively shortened, cable take-up and pay-off are efficient and smooth, cables are not damaged, the service life is long, by arranging a lifting handle in a matched mode, the cable take-up and pay-off device can be conveniently carried and moved, and the power taking efficiency of the cable take-up and pay-off device in the power grid first-aid repair process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance power boxes, in particular to a portable maintenance power box. Background Art

[0002] The maintenance power box is a combination of three-phase sockets, single-phase sockets, DC sockets, and corresponding protection devices. It allows a large current and is convenient for plugging in temporary power devices such as various power tools, electrical equipment, test equipment, and lighting during maintenance. In recent years, with the continuous expansion of the scale of the power grid, various types of high-voltage electrical equipment have continued to increase, and the number of electrical equipment maintenance and tests each year has also increased significantly. In the process of electrical equipment maintenance and testing, there is often a problem that the maintenance and test site is far away from the distribution box. To solve this problem, a maintenance power box is required.

[0003] However, in the prior art, the traditional maintenance power box is bulky, has low equipment integration, low efficiency and poor safety. In the daily maintenance test of the power system, it is time-consuming and laborious to draw power through the traditional maintenance power box. During the on-site line laying stage during the maintenance process, manual handling of cables is generally adopted, with one person pulling the wire and the other cooperating to pass the wire. However, even if the two people cooperate with each other, the entire reel of cables will become scattered, knotted and entangled when laying the wire. The collection and release of the cables takes up a lot of time. During the emergency repair of the power grid, the bulky maintenance power box seriously affects the efficiency of the emergency repair and increases the workload of the operators. Summary of the invention

[0004] The purpose of the present invention is to provide a portable maintenance power box to solve the problems proposed in the above background technology that the traditional maintenance power box is bulky, has low equipment integration, low utilization efficiency and poor safety. In daily maintenance tests of the power system, it is time-consuming and laborious to draw power through the traditional maintenance power box. Especially in the process of emergency repair of the power grid, the bulky maintenance power box seriously affects the efficiency of the emergency repair and increases the workload of the operators.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a portable maintenance power box, comprising an insulating box body and an insulating box cover, the insulating box body and the insulating box cover are rotatably connected, an air switch is installed inside the insulating box body, a double-throw knife switch is arranged on one side of the air switch, an intelligent residual current action protector is arranged on one side of the double-throw knife switch, a multi-functional conversion plug is installed on the front of the insulating box body, a lifting handle is fixedly connected to the outer wall of the insulating box cover, an automatic cord reel is fixedly connected to the back of the insulating box body, a fixed shaft is fixedly connected to the inner wall of the automatic cord reel, a winding reel is sleeved on the outer wall of the fixed shaft, a cable is wound in the groove of the winding reel, a movable groove is opened on the outer wall of one side of the winding reel, a volute spring is arranged inside the movable groove, the volute spring is sleeved on the outside of the fixed shaft, the inner end of the volute spring is fixedly connected to the outer wall of the fixed shaft, and the outer end of the volute spring is fixedly connected to the inner wall of the movable groove.

[0006] Preferably, a wire pulling opening is formed through the outer wall of the automatic wire reel, a pressing groove is formed through the top surface of the automatic wire reel, a locking pressure block is movably connected to the inner wall of the pressing groove, a card slot is formed through the bottom surface of the locking pressure block, and anti-sliding blocks are fixedly connected to both sides of the inner wall of the card slot, and the locking pressure block is pressed so that the card slot at its bottom end clamps the edge of the wire reel, thereby achieving locking and fixation in cooperation with the anti-sliding block.

[0007] Preferably, a limiting groove is formed through the outer wall of the locking pressure block, a limiting plate is arranged inside the limiting groove, the limiting plate is fixedly connected to the inner wall of the pressing groove, a compression spring is fixedly connected between the top surface of the limiting plate and the top surface of the limiting groove, and when the cable is recovered, the locking pressure block is lifted and the compression spring is used to lift it up and separate it from the winding reel, so that the winding reel can smoothly rotate and reel up the cable.

[0008] Preferably, the inner wall of the movable groove is fixedly connected with a support frame, and the middle part of the support frame is movably sleeved on the outer wall of the fixed shaft, so that the winding reel can rotate stably and smoothly through the support frame.

[0009] Preferably, a mounting frame is provided inside the insulating box, and the bottom surfaces of both ends of the mounting frame are fixedly connected to support rods, and the bottom surfaces of the support rods are fixedly connected to the inner bottom surface of the insulating box. Through the arrangement of the support rods and the mounting frame, the air switch, double-throw knife switch and intelligent residual current action protector can be stably installed in the insulating box, thereby realizing the integrated installation of various components.

[0010] Preferably, the air switch, double-throw knife switch and intelligent residual current action protector are all installed on the mounting frame. Through integrated installation, they are coordinated and beautiful, and the equipment installation and debugging are convenient and the subsequent maintenance is relatively easy.

[0011] Preferably, four corners of the bottom surface of the insulating box are fixedly connected with supporting feet.

[0012] Preferably, a sealing strip is fixedly connected to the inner wall of the insulating box cover. Through the provision of the sealing strip, after the insulating box cover is buckled on the top surface of the insulating box body, the gap between the insulating box cover and the insulating box body is filled to maintain the internal sealing of the present invention.

[0013] Preferably, a buckle is installed on the outer wall of one end of the insulating box body, and a buckle plate is fixedly connected to the outer wall of one end of the insulating box cover. Through the coordinated use of the buckle and the buckle plate, the insulating box cover and the insulating box body can be quickly locked or opened.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the cable is wound up by setting a winding drum in the automatic winding machine. When the cable is pulled out from the winding machine by utilizing the elastic deformation of the spiral spring, the spiral spring rotates around the fixed axis along with the winding drum. The spiral spring stores energy, thereby providing a driving force when the cable is retracted, thereby realizing automatic retraction and release of the cable, effectively reducing the cable laying time. The cable is retracted and released efficiently and smoothly without damaging the cable and having a long service life. By coordinating with the setting of the lifting handle, the present invention can be conveniently carried and moved, thereby improving the power supply efficiency of the present invention during the power grid repair process and reducing the workload of the operators.

[0015] 2. In the present invention, the pulling out or sending back of the cable is limited by the setting of the wire pulling port, which is convenient for the cable reel to better retract and release the cable. After pulling out the cable, the locking pressure block is pressed so that the groove at its bottom clamps the edge of the cable reel, and the anti-sliding block is used to lock and fix it. When retrieving the cable, the locking pressure block is lifted and the compression spring is used to lift it up and separate it from the cable reel, so that the cable reel can rotate smoothly and reel the cable.

[0016] 3. In the present invention, by setting the support rod and the mounting frame, the air switch, the double-throw knife switch and the intelligent residual current action protector can be stably installed in the insulating box, and the integrated installation of various components is realized. The equipment is convenient to install and debug and the subsequent maintenance is relatively easy. By setting the sealing strip, the insulating box cover is buckled on the top surface of the insulating box body, filling the gap between the insulating box cover and the insulating box body to maintain the internal sealing of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a portable maintenance power box of the present invention; Figure 2 It is a side view structural schematic diagram of a portable maintenance power box of the present invention; Figure 3This is a schematic diagram of the internal structure of an insulating box of a portable maintenance power box of the present invention; Figure 4 This is a structural schematic diagram of a portable maintenance power box cord reel of the present invention; Figure 5 It is a cross-sectional structural schematic diagram of a portable automatic cord reel for repairing a power supply box of the present invention; Figure 6 A portable maintenance power box of the present invention Figure 5 A magnified view of the structure at center; Figure 7 The present invention is a schematic structural diagram of a locking pressure block of a portable maintenance power box.

[0018] In the figure: 1. Insulating box body; 11. Support rod; 12. Mounting frame; 2. Insulating box cover; 21. Sealing strip; 22. Lifting handle; 23. Buckle plate; 3. Multi-function conversion plug; 4. Support base; 5. Air switch; 6. Double-throw knife switch; 7. Intelligent residual current action protector; 8. Automatic reel; 81. Locking pressure block; 811. Limiting groove; 812. Compression spring; 813. Limiting plate; 814. Card slot; 815. Anti-sliding block; 82. Wire pulling port; 83. Reel; 84. Cable; 85. Movable slot; 851. Support frame; 86. Fixed shaft; 87. Volute spring; 88. Pressing slot; 9. Buckle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 Reference Figure 1-7As shown: a portable maintenance power box, comprising an insulating box body 1 and an insulating box cover 2, the insulating box body 1 and the insulating box cover 2 are rotatably connected, an air switch 5 is installed inside the insulating box body 1, a double-throw knife switch 6 is arranged on one side of the air switch 5, and an intelligent residual current action protector 7 is arranged on one side of the double-throw knife switch 6, a multi-function conversion plug 3 is installed on the front of the insulating box body 1, a lifting handle 22 is fixedly connected to the outer wall of the insulating box cover 2, an automatic wire reel 8 is fixedly connected to the back of the insulating box body 1, a fixed shaft 86 is fixedly connected to the inner wall of the automatic wire reel 8, a winding drum 83 is sleeved on the outer wall of the fixed shaft 86, a cable 84 is wound in the groove of the winding drum 83, a movable groove 85 is opened on the outer wall of one side of the winding drum 83, a volute spring 87 is arranged inside the movable groove 85, the volute spring 87 is sleeved on the outside of the fixed shaft 86, the inner end of the volute spring 87 is fixedly connected to the outer wall of the fixed shaft 86, and the outer end of the volute spring 87 is fixedly connected to the inner wall of the movable groove 85.

[0021] The cable 84 is automatically retracted and released by the user, and the cable 84 is automatically retracted and released by the user, thereby effectively reducing the cable laying time. The cable reel 83 is efficiently and smoothly retracted and released without damaging the cable 84, and the service life is long. The air switch 5, double-throw knife switch 6 and intelligent residual current action protector 7 combined in the insulating box 1 are used for protection, and the electrical circuit connecting the electric machinery and the electric tool is controlled. When leakage or short circuit occurs, the electric circuit can be operated within 1 second to prevent personal injury accidents. The lifting handle 22 is provided, so that the present invention can be conveniently carried and moved. The multi-functional conversion plug 3 is applicable to various types of sockets. The multi-functional conversion plug 3 adopts a three-wire system, has grounding protection capability, good insulation, strong waterproof and explosion-proof performance, and strong adaptability to sockets.

[0022] Embodiment 2 Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a wire pulling opening 82 is penetrated through the outer wall of the automatic wire reel 8, a pressing groove 88 is penetrated through the top surface of the automatic wire reel 8, a locking pressure block 81 is movably connected to the inner wall of the pressing groove 88, a clamping groove 814 is penetrated through the bottom surface of the locking pressure block 81, anti-sliding blocks 815 are fixedly connected to both sides of the inner wall of the clamping groove 814, a limiting groove 811 is penetrated through the outer wall of the locking pressure block 81, a limiting plate 813 is arranged inside the limiting groove 811, the limiting plate 813 is fixedly connected to the inner wall of the pressing groove 88, a compression spring 812 is fixedly connected between the top surface of the limiting plate 813 and the inner top surface of the limiting groove 811, the inner wall of the movable groove 85 is fixedly connected to the support frame 851, and the middle part of the support frame 851 is movably sleeved on the outer wall of the fixed shaft 86.

[0023] In this embodiment, by setting the wire pulling port 82, the pulling out and retraction of the cable 84 can be restricted, so that the cable reel 83 can be more effectively retracted and released. With the design of the locking pressure block 81, after the cable 84 is pulled out, the locking pressure block 81 is pressed so that its slot 814 clamps the edge of the cable reel 83, and the anti-sliding block 815 is used to ensure locking and fixing. When the cable 84 is recovered, the locking pressure block 81 is lifted and separated from the cable reel 83 with the help of the compression spring 812, so that the cable reel 83 can smoothly rotate and retract the cable 84. The limiting plate 813 is used to limit the pressing of the locking pressure block 81, so that the top of the locking pressure block 81 protrudes a part of the surface of the automatic reel 8, so as to facilitate the subsequent pulling control, which helps to optimize the reel 83 to retract and release the cable 84 and improve the operating efficiency and safety.

[0024] Embodiment 3 according to Figure 1-3 As shown, a mounting frame 12 is provided inside the insulating box 1, and the bottom surfaces of both ends of the mounting frame 12 are fixedly connected with support rods 11, and the bottom surfaces of the support rods 11 are fixedly connected to the inner bottom surface of the insulating box 1. The air switch 5, the double-throw knife switch 6 and the intelligent residual current action protector 7 are all installed on the mounting frame 12, and the four corners of the bottom surface of the insulating box 1 are fixedly connected with supporting feet 4, and the inner wall of the insulating box cover 2 is fixedly connected with a sealing strip 21, a buckle 9 is installed on the outer wall of one end of the insulating box 1, and a buckle plate 23 is fixedly connected to the outer wall of one end of the insulating box cover 2.

[0025] In this embodiment, by providing the support rod 11 and the mounting frame 12, the air switch 5, the double-throw knife switch 6 and the intelligent residual current action protector 7 are conveniently and stably installed in the insulating box 1, and the integrated layout of each component is realized. The overall coordination and beauty are achieved, the equipment is convenient to install and debug, and the subsequent maintenance is relatively easy. By providing the sealing strip 21, the insulating box cover 2 is buckled on the top surface of the insulating box 1, and the gap between the insulating box cover 2 and the insulating box 1 is filled to maintain the internal sealing of the present invention. By the coordinated use of the buckle 9 and the buckle plate 23, the insulating box cover 2 and the insulating box 1 can be quickly locked or opened, so that the assembly, operation and maintenance of the insulating box become more convenient and efficient, and the overall reliability and ease of use of the equipment are improved.

[0026] The method of use and working principle of the present device are as follows: the cable 84 is wound up by the winding drum 83 in the automatic winding device 8, and when the cable 84 is pulled out from the winding device by utilizing the elastic deformation of the spiral spring 87, the spiral spring 87 rotates around the fixed shaft 86 along with the winding drum 83, and the spiral spring 87 stores energy, thereby providing a driving force when the cable is retracted, thereby realizing automatic retraction and release of the cable 84, and effectively reducing the cable laying time. The device is protected by cooperating with the air switch 5, double-throw knife switch 6 and intelligent residual current action protector 7 combined inside the insulating box 1, and controlling the electrical circuit connecting the electric machinery and the electric tool. When leakage or short circuit occurs, the circuit can be cut off within 1 second. The setting of the lifting handle 22 makes the present invention easy to carry and move. The setting of the multi-functional conversion plug 3 is suitable for various types of sockets, and the cable 84 is convenient to be connected through the wire pulling port 82. When the cable 84 is recovered, the locking pressure block 81 is lifted and the compression spring 812 is cooperated to lift it up and separate it from the cable reel 83, so that the cable reel 84 can be smoothly rotated and wound up. The locking pressure block 81 is limited by the limiting plate 813, so that the top of the locking pressure block 81 protrudes a part on the surface of the automatic reel 8 to facilitate subsequent pulling control. Through the arrangement of the support rod 11 and the mounting frame 12, the air switch 5, the double-throw knife switch 6 and the intelligent residual current action protector 7 are conveniently installed in the insulating box 1, and the integrated installation of each component is realized. Through the coordinated use of the buckle 9 and the buckle plate 23, the insulating box cover 2 and the insulating box 1 can be quickly locked or opened.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable maintenance power supply box, comprising an insulating box body (1) and an insulating box cover (2), wherein the insulating box body (1) and the insulating box cover (2) are rotatably connected, and characterized in that: An air switch (5) is installed inside the insulating box (1), a double-throw knife switch (6) is arranged on one side of the air switch (5), an intelligent residual current action protector (7) is arranged on one side of the double-throw knife switch (6), a multifunctional conversion plug (3) is installed on the front of the insulating box (1), a lifting handle (22) is fixedly connected to the outer wall of the insulating box cover (2), an automatic wire reel (8) is fixedly connected to the back of the insulating box (1), and a fixed shaft (86) is fixedly connected to the inner wall of the automatic wire reel (8), A cable reel (83) is sleeved on the outer wall of the fixed shaft (86), a cable (84) is wound in a groove of the cable reel (83), a movable groove (85) is opened on one side of the outer wall of the cable reel (83), a volute spring (87) is arranged inside the movable groove (85), the volute spring (87) is sleeved outside the fixed shaft (86), the inner end of the volute spring (87) is fixedly connected to the outer wall of the fixed shaft (86), and the outer end of the volute spring (87) is fixedly connected to the inner wall of the movable groove (85).

2. A portable maintenance power box according to claim 1, characterized in that: The outer wall of the automatic wire reel (8) is provided with a wire pulling opening (82), the top surface of the automatic wire reel (8) is provided with a pressing groove (88), the inner wall of the pressing groove (88) is movably connected with a locking pressure block (81), the bottom surface of the locking pressure block (81) is provided with a clamping groove (814), and both sides of the inner wall of the clamping groove (814) are fixedly connected with anti-sliding blocks (815).

3. A portable maintenance power box according to claim 2, characterized in that: A limiting groove (811) is formed through the outer wall of the locking pressure block (81), a limiting plate (813) is arranged inside the limiting groove (811), the limiting plate (813) is fixedly connected to the inner wall of the pressing groove (88), and a compression spring (812) is fixedly connected between the top surface of the limiting plate (813) and the inner top surface of the limiting groove (811).

4. A portable maintenance power box according to claim 3, characterized in that: The inner wall of the movable groove (85) is fixedly connected to a support frame (851), and the middle part of the support frame (851) is movably sleeved on the outer wall of the fixed shaft (86).

5. The portable maintenance power box according to claim 1, characterized in that: A mounting frame (12) is provided inside the insulating box (1), and the bottom surfaces at both ends of the mounting frame (12) are fixedly connected to support rods (11), and the bottom surfaces of the support rods (11) are fixedly connected to the inner bottom surface of the insulating box (1).

6. A portable maintenance power box according to claim 5, characterized in that: The air switch (5), the double-throw knife switch (6) and the intelligent residual current action protector (7) are all mounted on a mounting frame (12).

7. The portable maintenance power box according to claim 1, characterized in that: The four corners of the bottom surface of the insulating box body (1) are all fixedly connected with supporting feet (4).

8. The portable maintenance power box according to claim 1, characterized in that: A sealing strip (21) is fixedly connected to the inner wall of the insulating box cover (2).

9. The portable maintenance power box according to claim 1, characterized in that: A buckle (9) is installed on the outer wall at one end of the insulating box body (1), and a buckle plate (23) is fixedly connected to the outer wall at one end of the insulating box cover (2).

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