Ring main unit manufacturing device

Abstract

The invention relates to the technical field of ring main unit manufacturing, and discloses a ring main unit manufacturing device which comprises a processing box, a processing table is fixed in the processing box, and a placing plate used for placing a ring main unit metal shell is rotationally installed on the processing table; a through hole is formed in the placing plate and penetrates through the processing table; a fixed rod is fixedly mounted in the processing box; three moving plates are slidably mounted on the fixed rod in a limiting manner, paint nozzles are fixedly mounted on the three moving plates, and the three moving plates are driven by the same driving mechanism; two limiting assemblies used for upward sliding limiting and downward sliding limiting are arranged in the machining box, and the uppermost moving plate and the lowermost moving plate correspond to the limiting assemblies correspondingly. A motor is fixedly installed at the bottom of the machining table, and an output shaft of the motor is in transmission fit with the driving mechanism and the containing plate through a transmission assembly. According to the invention, almost all-around large-area spraying is carried out on the metal shell of the ring main unit through a simple mechanical structure, and the fault rate, the manufacturing cost, the use energy consumption and the cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of ring main unit manufacturing technology, and in particular to a ring main unit manufacturing apparatus. Background Technology

[0002] Ring main units (RMUs) are specialized switching devices used in power systems for ring network power supply, primarily applied in medium-voltage distribution networks. Their core function is to achieve closed-loop power supply from dual or multiple power sources, quickly isolating faulty sections during faults while ensuring continuous power supply to non-faulty areas, significantly improving the reliability and flexibility of the distribution network. During manufacturing, the metal casing of a RMU requires comprehensive painting of its outer walls.

[0003] The painting device and method for a fire cabinet, disclosed in CN117358465A, include a base with a top plate on top. Support columns are installed at the four corners of the top of the base and are fixedly connected to the bottom of the top plate. A cabinet painting assembly is installed on the top plate, and a bottom wall painting assembly is installed at the top of the base. The cabinet painting assembly includes symmetrically arranged mounting plates below the top plate, and two mounting brackets are located below the mounting plates. In this invention, two first spray nozzles are positioned above the fire cabinet. Paint from the hopper is sprayed downwards from the first nozzles onto the top wall of the fire cabinet. Turning on the motor moves the longitudinal plate downwards, pushing the two first spray nozzles away from each other, facilitating painting of the top wall of the fire cabinet, expanding the painting area, and improving the completeness of the painting.

[0004] Based on the above technical features, the problems are as follows: In the existing technology, a large number of electric drive components such as electromagnets, motors and cylinders are relied upon, which results in high manufacturing costs and increased energy consumption and costs. At the same time, electromagnets are prone to failure in painted environments, resulting in a high failure rate.

[0005] Therefore, it is necessary to solve the above problems by using a ring main unit manufacturing device. Summary of the Invention

[0006] The purpose of this invention is to provide a ring main unit manufacturing apparatus to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ring main unit manufacturing device, comprising a processing box, wherein a horizontal processing table is fixedly arranged inside the processing box, and a horizontal placement plate for placing the metal shell of the ring main unit is rotatably mounted on the processing table; a through hole is formed in the vertical direction along the upper edge of the placement plate, and the through hole penetrates the processing table downwards; A vertically oriented fixed rod is fixedly installed inside the processing box, and the fixed rod passes through the processing table; three movable plates that can slide up and down are slidably installed on the upper limit of the fixed rod, and the three movable plates correspond to the top, side and bottom of the metal shell of the ring main unit, respectively; Three mobile plates are fixedly installed with paint spray nozzles for spraying paint to the metal shell of the ring main unit, and the three mobile plates are driven by the same driving mechanism. The processing box is provided with two limiting assemblies for upper sliding limiting and lower sliding limiting, the uppermost mobile plate and the lowermost mobile plate each correspond to one limiting assembly, and each limiting assembly acts on the corresponding mobile plate. The bottom of the processing table is fixedly installed with a motor, and the output shaft of the motor is in transmission cooperation with the driving mechanism and the placement plate through a transmission assembly.

[0008] Preferably, the driving mechanism comprises a rotating shaft penetrating the processing table in the vertical direction and being rotationally connected with the processing table and the processing box; the rotating shaft is provided with a first thread, a second thread and a third thread in the circumferential direction, the third thread is located between the first thread and the second thread; the rotating shaft penetrates the three mobile plates; the mobile plate located in the middle is threadedly connected with the third thread, the mobile plate located at the lowermost position is threadedly connected with the first thread through a threaded connecting piece, and the mobile plate located at the uppermost position is threadedly connected with the second thread through another threaded connecting piece; the threads of the first thread and the second thread are opposite in rotation direction, the third thread is a reciprocating thread; and the rotating shaft is in transmission connection with the transmission assembly.

[0009] Preferably, the transmission assembly comprises a first gear, a second gear and an outer gear ring; the first gear is fixedly sleeved on the rotating shaft, the second gear is fixedly sleeved on the output shaft of the motor, and the outer gear ring is rotationally installed on the bottom of the processing table and coaxially fixedly connected with a rotating ring; the rotating ring is rotationally installed in the through hole and fixedly connected with the placement plate, and the second gear and the outer gear ring are in meshing cooperation with the first gear.

[0010] Preferably, the threaded connecting piece comprises a slide rod, the slide rod penetrates into the mobile plate in the radial direction of the rotating shaft and is in limiting sliding cooperation with the mobile plate; the end of the slide rod close to the rotating shaft is provided with a thread segment for thread cooperation; a spring is sleeved on the slide rod, and a baffle is fixedly arranged on the slide rod; one end of the spring is fixedly connected with the baffle, and the other end is fixedly connected with the mobile plate.

[0011] Preferably, the limiting assembly comprises an upper limiting plate and a lower limiting plate fixed in the processing box, the upper limiting plate is located directly above the lower limiting plate, and the end portions of the upper limiting plate and the lower limiting plate are fixedly provided with first limiting rods and second limiting rods which are parallel to each other; the first limiting rods and the second limiting rods on the upper limiting plate are inclined downward, and the first limiting rods and the second limiting rods on the lower limiting plate are inclined upward; each first limiting rod is longer than the second limiting rod which is parallel to the first limiting rod, the two first limiting rods and the two second limiting rods are symmetrically arranged in a spreader shape, and the two second limiting rods are located between the two first limiting rods; the end portion of the sliding rod away from the rotating shaft is fixedly provided with a push rod, the push rod is perpendicular to the sliding rod and abuts against the transmission cooperation when contacting with the two first limiting rods; the gap between each first limiting rod and the second limiting rod which is parallel to the first limiting rod is matched with the cross section of the push rod.

[0012] Preferably, the processing box is fixedly provided with a paint pipe, and the paint pipe circumscribes a paint tank; three shunt pipes are fixedly and communicatively arranged on the paint pipe, and the three shunt pipes correspond to three paint spray heads one by one; one paint hose is fixedly and communicatively arranged between each shunt pipe and the corresponding paint spray head.

[0013] Preferably, one of the side box bodies of the processing box is provided with a box opening for taking and placing the metal shell of the ring main unit, and a box door is installed at the box opening.

[0014] Preferably, the box door comprises an outer frame installed in the box opening and an inner plate fixed in the outer frame, and the inner plate is made of a transparent material.

[0015] The technical effects and advantages of the present application are as follows: the present application can realize almost full-range and large-area spraying of the metal shell of the ring main unit through a simple mechanical structure, and the manufacturing cost is low; at the same time, the whole structure is driven by one motor, and the use energy consumption and cost are greatly reduced; and due to the adoption of a simple mechanical structure, the failure rate is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present application; Figure 2 It is an internal schematic diagram of the processing box of the present application; Figure 3 It is an enlarged schematic diagram of A of the present application; Figure 4 It is an enlarged schematic diagram of B of the present application; Figure 5 It is a schematic diagram of the bottom of the processing table of the present application; Figure 6 It is an enlarged schematic diagram of C of the present application; Figure 7 It is a schematic diagram of the moving plate of the present application; Figure 8 It is an enlarged schematic diagram of D of the present application; Figure 9 It is a pivot schematic diagram of the application; Figure 10 It is a placement plate schematic diagram of the application.

[0017] In the figure: 1, processing box; 2, box door; 3, pivot; 4, first thread; 5, second thread; 6, third thread; 7, first gear; 8, motor; 9, second gear; 10, outer gear ring; 11, rotating ring; 12, placement plate; 13, processing table; 14, first moving plate; 15, fixed rod; 16, second moving plate; 17, first sliding hole; 18, second sliding hole; 19, sliding rod; 20, baffle; 21, spring; 22, push rod; 23, first paint spray head; 24, second paint spray head; 25, first paint hose; 26, paint pipe; 27, lower limit plate; 28, upper limit plate; 29, support plate; 30, third moving plate; 31, third paint spray head; 32, second paint hose. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0019] The application provides a kind of ring network cabinet manufacturing device as shown in Figures 1 to 10 It includes processing box 1, the front side box body of processing box 1 is opened with the box mouth for taking and placing ring network cabinet metal shell, box door 2 is installed at the box mouth.

[0020] Specifically, the box door 2 includes an outer frame installed in the box mouth and an inner plate fixed in the outer frame, and the inner plate is made of transparent material.

[0021] A horizontal processing table 13 is fixedly arranged in the processing box 1, and a horizontal placement plate 12 for placing the ring network cabinet metal shell is rotatably installed on the processing table 13. In this embodiment, the placement plate 12 is a circular plate, and a circular through hole is formed in the middle position of the placement plate 12, which penetrates the processing table 13 downward.

[0022] A rotating ring 11 is coaxially rotatably installed in the circular through hole, and the rotating ring 11 is fixedly connected with the placement plate 12.

[0023] A fixed rod 15 is vertically arranged in the processing box 1, and the fixed rod 15 penetrates the processing table 13 and is fixedly connected with the processing table 13 and the processing box 1.

[0024] Three horizontal moving plates are installed in the processing box 1, the fixed rod 15 penetrates through the three moving plates, and the three moving plates are in limiting sliding fit with the fixed rod 15. The three moving plates correspond to the top, side and bottom of the metal shell of the ring main unit respectively, and the three moving plates are all fixedly installed with paint spray heads for spraying paint to the metal shell of the ring main unit.

[0025] Specifically, for the convenience of the following description, the three moving plates and the three paint spray heads are numbered. The moving plate located at the lowermost is the first moving plate 14, the first moving plate 14 is located below the processing table 13, and the paint spray head on the first moving plate 14 is the first paint spray head 23. The one located in the middle is the third moving plate 30, the third moving plate 30 is located above the processing table 13, and the paint spray head on the third moving plate 30 is the third paint spray head 31. The moving plate located at the uppermost is the second moving plate 16, the second moving plate 16 is located above the third moving plate 30, and the paint spray head on the second moving plate 16 is the second paint spray head 24.

[0026] A paint pipe 26 is fixedly arranged in the processing box 1, and the paint pipe 26 is connected with a paint tank. It should be noted that the paint tank is provided with a pump for conveying paint, and the paint outlet of the pump is fixedly communicated with the paint pipe 26.

[0027] The paint pipe 26 is fixedly communicated with three shunt pipes, and the three shunt pipes correspond to the three paint spray heads one by one. An oil paint hose is fixedly arranged between each shunt pipe and the corresponding paint spray head. The oil paint hoses communicated with the first paint spray head 23 and the second paint spray head 24 are both first oil paint hoses 25, and the oil paint hose communicated with the third paint spray head 31 is a second oil paint hose 32.

[0028] The first moving plate 14, the second moving plate 16 and the third moving plate 30 are all driven by the same driving mechanism.

[0029] Specifically, the driving mechanism includes a rotating shaft 3, which penetrates the processing table 13 along the vertical direction and is rotationally connected with the processing table 13 and the processing box 1. The rotating shaft 3 is provided with a first thread 4, a second thread 5 and a third thread 6 along the circumference, and the third thread 6 is located between the first thread 4 and the second thread 5.

[0030] The rotating shaft 3 penetrates the first moving plate 14, the second moving plate 16 and the third moving plate 30. It should be noted that the first moving plate 14, the second moving plate 16 and the third moving plate 30 are all provided with a second sliding hole 18 for the rotating shaft 3 to penetrate; the first moving plate 14, the second moving plate 16 and the third moving plate 30 are all provided with a first sliding hole 17 for the fixed rod 15 to penetrate.

[0031] The third moving plate 30 is threadedly connected with the third thread 6, and the third thread 6 is a reciprocating thread.

[0032] The first moving plate 14 is threadedly connected with the first thread 4 through a threaded connecting piece. The second moving plate 16 is threadedly connected with the second thread 5 through another threaded connecting piece.

[0033] The thread rotation directions of the first thread 4 and the second thread 5 are opposite, and the third thread 6 is a reciprocating thread.

[0034] It should be noted that, in order to prevent paint from adhering to the rotating shaft 3 and to prevent the threads on the rotating shaft 3 from being corroded, the threads on the rotating shaft 3 can be protected by using available protection measures, and the specific protection measures are determined according to actual production.

[0035] Specifically, the threaded connecting piece includes a slide rod 19 which penetrates into the second slide hole 18 of the moving plate along the radial direction of the rotating shaft 3 and is in limited sliding fit with the moving plate. The end of the slide rod 19 close to the rotating shaft 3 is provided with a threaded segment for threadedly cooperating with the thread. It should be noted that the threaded segment on the end of the slide rod 19 close to the rotating shaft 3 on the first moving plate 14 threadedly cooperates with the first thread 4, and the threaded segment on the end of the slide rod 19 close to the rotating shaft 3 on the second moving plate 16 threadedly cooperates with the second thread 5.

[0036] A baffle 20 is fixedly arranged on the slide rod 19, and a spring 21 is sleeved on the slide rod 19. One end of the spring 21 is fixedly connected with the baffle 20, and the other end is fixedly connected with the moving plate. In order to prevent the slide rod 19 from rotating when threadedly cooperating with the thread, the slide rod 19 is preferably a square rod.

[0037] A motor 8 is fixedly installed at the bottom of the processing table 13, and the output shaft of the motor 8 drives the rotating shaft 3 and the rotating ring 11 to rotate through a transmission assembly. It should be noted that, in order to prevent paint from entering the motor 8, the motor 8 can be protected by using available protection measures, and the specific protection measures are determined according to actual production. For example, a protective cover is installed on the motor 8.

[0038] Specifically, the transmission assembly includes a first gear 7, a second gear 9, and an outer gear 10. The first gear 7 is fixedly sleeved on the rotating shaft 3, the second gear 9 is fixedly sleeved on the output shaft of the motor 8, and the outer gear 10 is rotatably installed at the bottom of the processing table 13 and coaxially fixedly connected with the rotating ring 11. The second gear 9 and the outer gear 10 are in meshing fit with the first gear 7.

[0039] Two limiting assemblies for upper sliding limiting and lower sliding limiting are arranged in the processing box 1, and the first moving plate 14 and the second moving plate 16 each correspond to one limiting assembly, and each limiting assembly acts on the corresponding moving plate.

[0040] Specifically, the limiting assembly includes an upper limiting plate 28 and a lower limiting plate 27. A horizontal support plate 29 is arranged in the processing box 1, and the support plate 29 is located between the third moving plate 30 and the second moving plate 16 and is fixedly connected with the inner wall of the processing box 1. The fixed rod 15 and the rotating shaft 3 both penetrate through the support plate 29, and the fixed rod 15 is fixedly connected with the support plate 29, and the rotating shaft 3 is rotationally connected with the support plate 29.

[0041] The lower limiting plate 27 of the limiting assembly corresponding to the second moving plate 16 is fixed on the top of the support plate 29, and the upper limiting plate 28 of the limiting assembly corresponding to the second moving plate 16 is fixed on the top inner wall of the processing box 1.

[0042] The lower limiting plate 27 of the limiting assembly corresponding to the first moving plate 14 is fixed on the bottom inner wall of the processing box 1, and the upper limiting plate 28 of the limiting assembly corresponding to the first moving plate 14 is fixed on the bottom inner wall of the processing table 13.

[0043] One of the limiting assemblies will be described as an example. The upper limiting plate 28 is located directly above the lower limiting plate 27, and the end portions of the upper limiting plate 28 and the lower limiting plate 27 are both fixedly provided with first limiting rods and second limiting rods which are parallel to each other.

[0044] The first limiting rods and the second limiting rods on the upper limiting plate 28 are both inclined downward, and the first limiting rods and the second limiting rods on the lower limiting plate 27 are both inclined upward.

[0045] Each first limiting rod is longer than the second limiting rod which is parallel to the first limiting rod, and the two first limiting rods and the two second limiting rods are symmetrically arranged in a figure-of-eight shape, and the two second limiting rods are located between the two first limiting rods.

[0046] The end portion of the sliding rod 19 away from the rotating shaft 3 is fixedly provided with a push rod 22, and the push rod 22 is horizontally arranged and perpendicular to the sliding rod 19. When the push rod 22 contacts with the two first limiting rods, the push rod 22 abuts and drives the two first limiting rods.

[0047] The gap between each first limiting rod and the second limiting rod which is parallel to the first limiting rod is matched with the cross section of the push rod 22. In order to ensure the stability of the sliding of the push rod 22, two first limiting rods which are symmetrically arranged with respect to the sliding rod 19 and two second limiting rods which are symmetrically arranged with respect to the sliding rod 19 are arranged on the upper limiting plate 28 and the lower limiting plate 27.

[0048] Working principle: when the metal shell of the ring main unit is painted by using the manufacturing device, the box door 2 is opened, and the metal shell of the ring main unit is placed on the placing plate 12.

[0049] Then, the motor 8 is started, the output shaft of the motor 8 drives the second gear 9 to rotate, and the second gear 9 drives the first gear 7 to rotate. The first gear 7 drives the rotating shaft 3 to rotate, and at the same time drives the outer gear 10 to rotate.

[0050] When the outer ring gear 10 rotates, it rotates slowly. At this time, the outer ring gear 10 drives the rotating ring 11 to rotate slowly, the rotating ring 11 drives the placement plate 12 to rotate slowly, and the placement plate 12 drives the metal shell of the ring network cabinet to rotate slowly.

[0051] When the rotating shaft 3 rotates, the third thread 6 drives the third moving plate 30 to move up and down reciprocatingly. At the same time, the first thread 4 drives the matched slide rod 19 to move up to close to the top of the metal shell of the ring network cabinet, the slide rod 19 drives the first moving plate 14 to move up to close to the bottom of the metal shell of the ring network cabinet, and the first moving plate 14 drives the first paint spray head 23 to move to close to the bottom of the metal shell of the ring network cabinet. The second thread 5 drives the matched slide rod 19 to move down to close to the top of the metal shell of the ring network cabinet, the slide rod 19 drives the second moving plate 16 to move down to close to the top of the metal shell of the ring network cabinet, and the second moving plate 16 drives the second paint spray head 24 to move down to close to the top of the metal shell of the ring network cabinet. In this process, the push rod 22 on the slide rod 19 in the first moving plate 14 is separated from the first limiting rod on the corresponding lower limiting plate 27; the push rod 22 on the slide rod 19 in the second moving plate 16 is separated from the first limiting rod on the corresponding upper limiting plate 28.

[0052] With the rotation of the rotating shaft 3, the push rod 22 on the slide rod 19 in the first moving plate 14 is in contact with and abuts against the first limiting rod on the corresponding upper limiting plate 28; the push rod 22 on the slide rod 19 in the second moving plate 16 is in contact with and abuts against the first limiting rod on the corresponding lower limiting plate 27. At this time, the two push rods 22 pull the connected slide rods 19 away from the rotating shaft 3, and the two slide rods 19 drive the corresponding baffle plates 20 to stretch the connected springs 21. At the same time, the slide rod 19 in the first moving plate 14 is separated from the first thread 4, and the slide rod 19 in the second moving plate 16 is separated from the second thread 5. After the separation, under the elastic force of the spring 21, the slide rod 19 in the first moving plate 14 is again engaged with the first thread 4, and the slide rod 19 in the second moving plate 16 is again engaged with the second thread 5. After the engagement, because the two push rods 22 are in contact with and abut against the corresponding first limiting rods, the spring 21 is again stretched, the slide rod 19 in the first moving plate 14 is again separated from the first thread 4, and the slide rod 19 in the second moving plate 16 is again separated from the second thread 5. In this way, the first moving plate 14 and the second moving plate 16 are kept in a relatively stable position, while accompanied by a certain frequency of up and down shaking.

[0053] After that, the pump for conveying paint is started, and the paint flows to the second paint hose 32 and the two first paint hoses 25 through the paint pipe 26, the three branch pipes, and finally the first paint spray head 23, the second paint spray head 24, and the third paint spray head 31.

[0054] It should be noted that the rotation period of the metal shell of the ring main unit is much larger than the reciprocating period of the up-and-down movement of the third paint spraying head 31, and the two cooperate with each other to ensure that the side wall is fully sprayed.

[0055] After the spraying is completed, the pump for conveying the paint is turned off, and the output shaft of the motor 8 is reversed. At this time, the first moving plate 14 and the second moving plate 16 slide back. When the push rod 22 on the slide rod 19 in the first moving plate 14 is in contact with and abuts against the first limiting rod on the corresponding lower limiting plate 27, and the push rod 22 on the slide rod 19 in the second moving plate 16 is in contact with and abuts against the first limiting rod on the corresponding upper limiting plate 28, the motor 8 is turned off.

[0056] Finally, after the paint solidifies, the box door 2 is opened, the metal shell of the ring main unit is taken out from the processing box 1, and manual spraying is performed on the remaining parts of the bottom of the metal shell of the ring main unit that have not been sprayed.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application should be included in the protection scope of the present application.

Claims

1. A ring main unit manufacturing device comprising a processing box (1), characterized in that: The processing box (1) is fixedly provided with a horizontal processing table (13), and a horizontal placing plate (12) for placing the metal shell of the ring main unit is rotatably installed on the processing table (13); a through hole is formed in the upper edge of the placing plate (12) in the vertical direction, and the through hole penetrates the processing table (13) downward; A vertical fixed rod (15) is fixedly installed in the processing box (1) and penetrates the processing table (13); three movable plates that can slide upward and downward are limitingly and slidably installed on the fixed rod (15), and the three movable plates correspond to the top, the side and the bottom of the metal shell of the ring main unit respectively; Paint spray heads for spraying paint on the metal shell of the ring main unit are fixedly installed on the three movable plates, and the three movable plates are driven by the same driving mechanism; Two limiting assemblies for upward sliding limiting and downward sliding limiting are arranged in the processing box (1), and each of the limiting assemblies corresponds to one of the uppermost movable plate and the lowermost movable plate, and each of the limiting assemblies acts on the corresponding movable plate; A motor (8) is fixedly installed at the bottom of the processing table (13), and the output shaft of the motor (8) is in transmission cooperation with the driving mechanism, the placing plate (12) and the transmission assembly.

2. The ring main unit manufacturing device according to claim 1, characterized by: The driving mechanism comprises a rotating shaft (3) that penetrates the processing table (13) in the vertical direction and is rotatably connected with the processing table (13) and the processing box (1); the rotating shaft (3) is provided with a first thread (4), a second thread (5) and a third thread (6) in the circumferential direction, the third thread (6) is located between the first thread (4) and the second thread (5), the rotating shaft (3) penetrates the three movable plates, the movable plate located in the middle is threadedly connected with the third thread (6), the lowermost movable plate is threadedly connected with the first thread (4) through a thread connecting piece, and the uppermost movable plate is threadedly connected with the second thread (5) through another thread connecting piece; the thread rotation directions of the first thread (4) and the second thread (5) are opposite, the third thread (6) is a reciprocating thread, and the rotating shaft (3) is in transmission connection with the transmission assembly.

3. The ring main unit manufacturing device according to claim 2, characterized by: The transmission assembly comprises a first gear (7), a second gear (9) and an outer gear ring (10); the first gear (7) is fixedly sleeved on the rotating shaft (3), the second gear (9) is fixedly sleeved on the output shaft of the motor (8), the outer gear ring (10) is rotatably installed at the bottom of the processing table (13) and coaxially fixedly connected with a rotating ring (11), the rotating ring (11) is rotatably installed in the through hole and fixedly connected with the placing plate (12), and the second gear (9) and the outer gear ring (10) are in meshing cooperation with the first gear (7).

4. The ring main unit manufacturing device according to claim 2, characterized by: The threaded connecting piece comprises a slide rod (19) penetrating into the moving plate along the radial direction of the rotating shaft (3) and being in limited sliding fit with the moving plate; the end of the slide rod (19) close to the rotating shaft (3) is provided with a threaded section for threaded fit; a spring (21) is sleeved on the slide rod (19), and a baffle (20) is fixedly arranged on the slide rod (19); one end of the spring (21) is fixedly connected with the baffle (20), and the other end is fixedly connected with the moving plate.

5. The ring main unit manufacturing device according to claim 4, characterized by: The limiting assembly comprises upper and lower limiting plates (28 and 27) fixed in the processing box (1), the upper limiting plate (28) is located directly above the lower limiting plate (27), and parallel first and second limiting rods are fixedly arranged at the ends close to each other; the first and second limiting rods on the upper limiting plate (28) are inclined downward, and the first and second limiting rods on the lower limiting plate (27) are inclined upward; each first limiting rod is longer than the parallel second limiting rod, the two first limiting rods and the two second limiting rods are arranged in an eight-character shape and are symmetrical, and the two second limiting rods are located between the two first limiting rods; the end of the slide rod (19) away from the rotating shaft (3) is fixedly provided with a push rod (22), the push rod (22) is perpendicular to the slide rod (19) and is in abutting transmission fit with the two first limiting rods when in contact; the gap between each first limiting rod and the parallel second limiting rod is matched with the cross section of the push rod (22).

6. The ring main unit manufacturing device according to claim 1, characterized by: The processing box (1) is fixedly provided with a paint pipe (26), and the paint pipe (26) is externally connected with a paint tank; the paint pipe (26) is fixedly and continuously connected with three shunt pipes, and the three shunt pipes correspond to three paint spray heads one by one, and one paint hose is fixedly arranged and communicated between each shunt pipe and the corresponding paint spray head.

7. The ring main unit manufacturing device according to claim 1, characterized by: One side box body of the processing box (1) is provided with a box opening for taking and placing the metal shell of the ring net cabinet, and a box door (2) is installed at the box opening.

8. The ring main unit manufacturing device according to claim 7, characterized by: The box door (2) comprises an outer frame installed in the box opening and an inner plate fixed in the outer frame, and the inner plate is made of transparent material.

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