A three-phase common-tank bus conductor support device

Abstract

The present application relates to a kind of three-phase common box bus conductor support device, three-phase common box bus conductor support device includes liftable support seat, support column is fixedly installed on liftable support seat, two side support arms and a middle support arm are connected on support column, two side support arms are symmetrically arranged, the top of each side support arm and the top of middle support arm respectively have support end for supporting bus conductor, the middle of side support arm is hinged with connecting rod, the other end of connecting rod is connected to support column, part side support arm, connecting rod and support column jointly enclose triangle, at least one of the connecting point position of side support arm and support column and the connecting point position of connecting rod and support column can be displaced along support column, so that the top of side support arm can be retracted and expanded relative to support column;Realize that the size of pullout does not need to be set larger to meet the assembly needs, and save manpower, facilitate assembly operation.

Description

[0001] This application is a divisional application of the following application, the original application's application date: December 16, 2021, the original application's application number: 2021115476684, the original application's invention title: A three-phase common-box busbar conductor support device. Technical Field

[0002] This invention relates to gas-insulated metal-enclosed switchgear, particularly to the field of fully enclosed installation technology for busbars, and specifically to a conductor support device for a three-phase common-enclosure busbar. Background Technology

[0003] Currently, the busbars adopt a common enclosure layout. The structure of the three-phase common enclosure busbar is as follows: Figure 1 As shown, the busbar includes a busbar cylinder 01 and a three-phase common-enclosure busbar conductor. The three-phase common-enclosure busbar conductor is a three-phase conductive rod 02. Support insulators 03 are connected to both ends of the busbar cylinder. The busbar cylinder between two adjacent support insulators 03 has a two-section structure, comprising a first cylinder section and a second cylinder section, connected by flanges. The two support insulators 03 are respectively the first support insulator and the second support insulator connected to the first cylinder section and the second cylinder section, respectively. Inserted conductors are provided on the support insulators 03, and contact seats 04 are connected to each inserted conductor. The contact seats 04 are conductively connected to the conductive rod. The two ends of the conductive rod 02 are respectively connected to the support insulators at both ends of the busbar cylinder 01. The contact seat 04 on the insulator 03 is connected. The conductive rod 02 is longer than any section of the busbar cylinder 01. Three pull-out points 05 are provided circumferentially at the ends of the busbar cylinder 01 near the two supporting insulators 03. During assembly, the first cylinder section and the first supporting insulator are connected first. When assembling the conductive rod with the first cylinder section and the first supporting insulator, the center of gravity can be slightly adjusted by hoisting the middle part of the conductive rod, allowing it to extend into the first cylinder section. When connecting the conductive rod to the first contact seat on the first supporting insulator, manual assistance can be provided at the three small pull-out points at the end of the busbar cylinder. After the conductive rod is assembled with the first cylinder section and the first supporting insulator, as... Figure 2 and Figure 3 As shown, the support plate 06 can be used to support the three-phase conductive rod 02 outside the first cylinder section. That is, the support plate 06 is fixed to the end flange of the first cylinder section to support the part of the three-phase conductive rod 02 exposed in the first cylinder section. When the distance between the first cylinder section and the second cylinder section is about 50mm, the support plate 06 can be removed to complete the connection of the two cylinder sections. Similarly, when the conductive rod is connected to the second contact seat on the second support insulator, the assembly is assisted by manual work at the three small pull-out points at the end of the busbar cylinder. Only one support plate is needed to complete the overall assembly. The assembly method of this common-box busbar structure is mature and the assembly tooling is simple.

[0004] However, although the above-mentioned common busbar structure has a mature and simple assembly method, its structure itself is complex. Because the busbar body is divided into two independent sections, the docking ends of the two sections need to be equipped with docking flanges, and the other end of each section needs to be equipped with three pull ports, the entire busbar body needs to have six pull ports, and each pull port needs to be equipped with a sealing cover plate. This makes the busbar structure complex and the production cost of the busbar products high. In practical applications, because the common busbar is used in large quantities, how to reduce costs is very important for enterprises' market competitiveness and operating profits.

[0005] Due to the high cost of segmented busbars, an existing design approach involves making the busbar cylinder between two adjacent supporting insulators a single integrated structure. While this busbar structure eliminates the need for two connecting flanges and three extension joints at one end of the busbar cylinder, three extension joints are still required at the other end of the busbar cylinder for assembly. Furthermore, installing these extension joints not only requires drilling holes in the busbar cylinder but also welding transition sections along the hole edges to form a flat end face. Sealing covers are also needed at the extension joints to achieve a seal. In total, three extension joints and three sealing covers are required, resulting in a still relatively high manufacturing cost for this busbar structure.

[0006] Therefore, one design approach was developed that involves placing a cutting end at only one end of the busbar cylinder without increasing the size of the cutting end, resulting in a busbar structure as follows: Figure 4 As shown, there is only one busbar cylinder 001 between two adjacent supporting insulators. One end of the conductive rod 002 is connected to the first contact seat 041 on the first supporting insulator 031, and the other end is connected to the second contact seat 042 on the second supporting insulator 032. The busbar cylinder 001 is an integral structure, and the busbar cylinder 001 has a pull-out 005 at only one end. This type of busbar structure can greatly reduce the manufacturing cost of the common-box busbar.

[0007] However, for this type of busbar structure, there is currently no good assembly method when the second contact near the pull-out position connects to the three-phase busbar conductors. If manual installation is relied upon, two people's arms need to reach into the pull-out to support the three conductive rods. Furthermore, the assembly is very inconvenient due to the limited assembly position of the three-phase conductive rods and the considerable length and weight of the conductive rods (nearly 6 meters in length). Therefore, how to achieve convenient assembly of the busbar for the single-pull-out integrated busbar cylinder while ensuring the lowest possible cost is the key issue currently being addressed. Summary of the Invention

[0008] The purpose of this invention is to provide a three-phase common-box busbar conductor support device to solve the problem of poor assembly of busbars in single-outlet integrated busbar cylinders.

[0009] The technical solution of the three-phase common-enclosure busbar conductor support device of the present invention is as follows:

[0010] A three-phase common-enclosure busbar conductor support device includes a liftable support base, on which a support column is fixedly installed. Two side support arms and a central support arm are connected to the support column. The two side support arms are symmetrically arranged. The top of each side support arm and the top of the central support arm have support ends for supporting the busbar conductor. A connecting rod is hinged to the middle of the side support arm. The other end of the connecting rod is connected to the support column. Part of the side support arms, the connecting rod, and the support column together form a triangle. At least one of the connection points between the side support arm and the support column and the connection point between the connecting rod and the support column can be displaced along the support column, so that the top of the side support arm can be retracted inward and extended outward relative to the support column.

[0011] Beneficial Effects: The three-phase common-enclosure busbar conductor support device features a liftable support base and two side support arms that can extend and retract. During use, the side support arms can be retracted to reduce the lateral dimension of the support portion. With the side support arms retracted, and in conjunction with the lifting function of the liftable support base, the support end for supporting the busbar conductor extends from the pull-out into the busbar cylinder. Then, by extending the side support arms outward, the busbar conductor is supported, thus achieving the connection between the contact seat near the pull-out of the single-pull-out integrated busbar cylinder and the busbar conductor. When it is necessary to remove the three-phase common-enclosure busbar conductor support device, the side support arms are retracted, and in conjunction with the lowering function of the liftable support base, the support end for supporting the busbar conductor exits from the pull-out into the busbar cylinder. This combination of retractable and extendable side support arms and the liftable support base allows for assembly without requiring a large pull-out size, saving manpower and facilitating assembly operations.

[0012] Furthermore, in the connection points between the side support arm and the support column, and between the connecting rod and the support column, the connection point between the side support arm and the support column can be displaced along the support column.

[0013] Beneficial effects: Since the side support arm is connected to the support column at its bottom, the connection point between the side support arm and the support column is lower than the connection point between the connecting rod and the support column. This makes it easier to leave the connection point between the side support arm and the support column outside the busbar cylinder when the three-phase common box busbar conductor support device extends into the busbar cylinder from the pull-out point. This allows personnel to operate outside the busbar cylinder and move the connection point between the side support arm and the support column.

[0014] Furthermore, a lower movable seat is fitted onto the support column, and the lower ends of each side support arm are hinged to the lower movable seat. The support column is a stud, and a rotating seat is screwed onto the support column. The rotating seat is located below the lower movable seat. The rotating seat and the lower movable seat are assembled together in a circumferentially relative but axially relatively fixed manner. When the rotating seat rotates around the support column, it can drive the lower movable seat to move up and down along the support column, thereby changing the vertical position of the connection point between the side support arm and the support column.

[0015] Beneficial effects: By setting the support column as a stud and assembling a rotating seat and a lower movable seat that rotate circumferentially but are relatively fixed axially, displacement of the connection point between the side support arm and the support column can be achieved by turning the rotating seat when necessary. This is convenient to operate and allows for stepless adjustment, which is beneficial for the side support arm to retract or extend into place, thereby improving the reliability of the busbar conductor support. At the same time, after the position of the connection point between the side support arm and the support column is adjusted, the external thread on the support column and the internal thread on the rotating seat can automatically maintain the vertical position, resulting in a simple structure.

[0016] Furthermore, the rotating seat is inserted into the center hole of the lower movable seat. The outer circumferential surface of the part of the rotating seat that is inserted into the lower movable seat is provided with an annular groove. The lower movable seat is provided with a threaded hole corresponding to the position of the annular groove. The rotating seat limit bolt is screwed into the threaded hole and extended into the annular groove, so that the rotating seat and the lower movable seat are assembled together in a circumferentially relative rotation and axially relatively fixed manner.

[0017] Beneficial effects: By using the same set of rotating seats and lower movable seats in conjunction with the setting of rotating seat limit bolts, the rotating seats and lower movable seats can be assembled together in a circumferentially relative rotation and axially relatively fixed manner. The structure is simple and easy to install.

[0018] Furthermore, the liftable support base is provided with a fixed connecting plate, the fixed connecting plate is provided with a through hole, the lower end of the support column is provided with a step, the step of the support column is provided with an external thread, the lower end of the support column passes through the through hole and the stepped surface of the step abuts against the fixed connecting plate, and a fixing nut is screwed on the part of the lower end of the support column that passes through the through hole to fix the support column to the fixed connecting plate.

[0019] Beneficial effects: The support column is fixed by setting a fixed connecting plate and a fixed nut to make the support column detachable and easy to replace. At the same time, the structure is simple and easy to operate.

[0020] Furthermore, the central support arm can be detachably connected to the top of the support column.

[0021] Beneficial effects: The detachable central support arm allows for the reduction of the height of the three-phase common busbar conductor support device by removing the central support arm, making it easier to move the three-phase common busbar conductor support device directly below the busbar cylinder to align with the pull-out port. At the same time, the reduced height of the liftable support base means that the busbar cylinder does not need to be set very high, which improves safety. Furthermore, the lower height of the busbar cylinder also facilitates assembly work for personnel.

[0022] Furthermore, the middle support arm is height-adjustable and connected to the top of the support column.

[0023] Beneficial effects: The height of the middle support arm is adjustable, which allows for adjustment of the height of the support end at the top of the middle support arm used to support the bus conductor, adapting to the phase spacing of different types of common busbars.

[0024] Furthermore, a blind hole is provided at the top of the support column for the insertion of the middle support arm, and an adjusting threaded hole is provided on the bottom end face of the middle support arm, in which an adjusting bolt for the middle support arm is screwed.

[0025] Beneficial effects: The length of the middle support arm can be adjusted by turning the adjusting bolt of the middle support arm, thereby adjusting the height after the middle support arm is inserted into the blind hole. The structure is simple and the adjustment is convenient.

[0026] Furthermore, a support arc plate is connected to the top of the side support arm, which constitutes the support end, and the position of the support arc plate in the radial direction of the support column is adjustable.

[0027] Beneficial effects: By setting up supporting arc plates, arc grooves can be formed to support the bus conductors, providing reliable support. Moreover, the adjustable position of the support can meet the assembly requirements of phase spacing for different types of common busbars.

[0028] Furthermore, the top of the side support arm has a mounting surface for fixing and connecting the support arc plate. An elongated hole is provided on the mounting surface, and a bolt through hole is provided on the support arc plate. The support arc plate is fixed on the side support arm by bolts passing through the bolt through hole and the elongated hole and connecting with the nut.

[0029] Beneficial effects: By setting the mounting surface to connect the support arc plate, it is beneficial to form a stable connection structure, and the connection position can be adjusted through the elongated hole. The structure is simple and easy to adjust. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a segmented busbar in the prior art;

[0031] Figure 2 for Figure 1 A schematic diagram of the segmented busbar installation process;

[0032] Figure 3 for Figure 2 AA view;

[0033] Figure 4 This is a schematic diagram of the busbar structure of an integrated busbar cylinder in the prior art;

[0034] Figure 5 This is a schematic diagram of the state of the conductive rod before it is connected to the first contact seat in Embodiment 1 of the three-phase common-box bus conductor support device of the present invention;

[0035] Figure 6 This is a schematic diagram of the state of the busbar cylinder before it is connected to the first support insulator in Embodiment 1 of the three-phase common-box busbar conductor support device of the present invention;

[0036] Figure 7 for Figure 6 A schematic diagram showing the placement of the movable support seat inside the conductive rod;

[0037] Figure 8 This is a schematic diagram showing the state of the busbar cylinder and the first support insulator when they are connected in Embodiment 1 of the three-phase common-box busbar conductor support device of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of Embodiment 1 of the three-phase common-box bus conductor support device of the present invention;

[0039] Figure 10 for Figure 9 A schematic diagram showing the state when the middle support arm is not inserted into the insertion hole of the support column;

[0040] Figure 11 for Figure 10 Schematic diagram of the assembly relationship between the central rotating seat, the lower movable seat and the supporting column;

[0041] Figure 12 This is a schematic diagram of the state in which the three-phase common-box bus conductor support device of the present invention extends into the bus cylinder after the middle support arm has been removed in Embodiment 1 of the three-phase common-box bus conductor support device of the present invention.

[0042] Figure 13 This is a schematic diagram of the middle support arm being reinstalled in the three-phase common-box bus conductor support device in Embodiment 1 of the present invention.

[0043] Figure 14 This is a schematic diagram showing the state in which the three-phase common-box bus conductor support device supports the three-phase conductive rods in Embodiment 1 of the present invention.

[0044] Figure 15 This is a schematic diagram of the second supporting insulator being connected to the busbar cylinder and the second contact seat being connected to the conductive rod in Embodiment 1 of the three-phase common-box busbar conductor support device of the present invention.

[0045] Figure 16 This is a schematic diagram showing the state after the second supporting insulator is connected to the busbar cylinder and the second contact seat is connected to the conductive rod in Embodiment 1 of the three-phase common-box busbar conductor support device of the present invention.

[0046] Figure 17 This is a schematic diagram showing the state after the insulator assembly support base and the three-phase common-box bus conductor support device are removed in Embodiment 1 of the present invention.

[0047] In the diagram: 01, busbar cylinder; 02, conductive rod; 03, supporting insulator; 04, contact seat; 05, pull-out joint; 06, support plate;

[0048] 001. Busbar cylinder; 002. Conductor rod; 031. First support insulator; 032. Second support insulator; 041. First contact seat; 042. Second contact seat; 005. Pull-out joint;

[0049] 1. Insulator assembly support; 2. Conductor rod outer support; 3. Busbar cylinder support; 4. Conductor rod inner movable support;

[0050] 5. Three-phase common busbar conductor support device; 51. Liftable support seat; 52. Fixed connecting plate; 53. Support column; 54. Rotating seat; 55. Lower movable seat; 56. Rotating seat handle; 57. Support column limit plate; 58. Rotating seat limit bolt; 59. Support column tightening nut; 510. Side support arm; 511. Connecting rod; 512. Upper fixed seat; 513. Middle support arm; 514. Middle support arm adjustment bolt; 515. Inner support seat side phase support plate; 516. Inner support seat middle phase support plate. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0053] It should be noted that the relational terms such as "first" and "second" that may appear in the specific embodiments of the present invention are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the possible phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0056] The present invention will be further described in detail below with reference to the embodiments.

[0057] Embodiment 1 of the three-phase common-box bus conductor support device of the present invention:

[0058] To more clearly describe the scheme of the three-phase common-box bus conductor support device of the present invention, the structure and use of the three-phase common-box bus conductor support device will be explained below in conjunction with the overall assembly process of the three-phase common-box bus.

[0059] In this embodiment, the three-phase common busbar conductor is a three-phase conductive rod 002. For example... Figure 5 , Figure 6 , Figure 7As shown, the first supporting insulator 031 and the first contact seat 041 are assembled through the insulator assembly support 1. Specifically, the insulator assembly support 1 has a flip-connecting plate that can switch between horizontal and vertical states, and the insulator assembly support 1 is provided with a lifting mechanism that drives the flip-connecting plate to rise and fall. During assembly, the flip-connecting plate is adjusted to a horizontal state, and the first supporting insulator 031 is fixed to the flip-connecting plate of the insulator assembly support 1. The first supporting insulator 031 is fixedly connected to the insert conductor on the first supporting insulator 031 through the fixing hole on the flip-connecting plate, thereby fixing the first supporting insulator 031 to the flip-connecting plate.

[0060] The first contact seat 041 is connected to the first support insulator 031. After the connection is completed, the first support insulator 031 is flipped to a vertical position and held in a vertical position by a limiting mechanism.

[0061] The three-phase conductive rods 002 are supported outside the busbar cylinder 001 by the outer support seats 2. There are two outer support seats 2, which are movable lifting vehicles. The three-phase conductive rods 002 are placed on the three support plates of the outer support seats 2, and the three-phase conductive rods 002 are placed horizontally on the outer support seats 2.

[0062] Push the insulator assembly support 1 closer to the outer conductor rod support 2, adjust the height of the lifting frame 12 of the insulator assembly support 1 and the height of the outer conductor rod support 2 to ensure that the three-phase conductor rod 002 and the three-phase first contact 041 are in concentric positions, and push the insulator assembly support 1 to connect the conductor rod 002 and the first contact 041.

[0063] The busbar cylinder 001 is supported by two busbar cylinder support seats 3, which are movable support trolleys. The busbar cylinder 001 is placed horizontally on the V-shaped support surface of the busbar cylinder support seat 3, with the pull-out 005 on the busbar cylinder 001 facing downwards.

[0064] Before the conductive rod 002 extends into the busbar cylinder 001, a movable support 4 for the conductive rod is placed inside the busbar cylinder 001. The movable support 4 is inserted from the side of the busbar cylinder 001 without the pull-out port 005. The movable support 4 supports the conductive rod 002 during its movement inside the busbar cylinder 001. The movable support 4 is a trolley, sized to allow for insertion and removal from the busbar cylinder 001. The trolley makes rolling contact with the inner wall of the busbar cylinder 001 via rollers provided on it.

[0065] The conductive rod 002 is inserted into the cylinder, and the three-phase conductive rod 002 is placed on the inner movable support 4, with the end of the conductive rod 002 furthest from the first contact 041 supported on the inner movable support 4. The outer support 2 is lowered to its lowest position and then removed sequentially. The busbar cylinder 001 is then connected to the first support insulator 031. The inner movable support 4 can move along with the conductive rod 002 during its movement, which helps maintain good support and reduces conductor damage.

[0066] like Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, the three-phase common-box bus conductor support device 5 is used to support the end of the three-phase conductive rod 002 near the pull-out 005 inside the busbar cylinder 001. The three-phase common-box bus conductor support device 5 includes a liftable support base 51 and a support column 53 fixedly installed on the liftable support base 51. The liftable support base 51 includes a double-fork arm platform and a scissor-type lifting mechanism set below the double-fork arm platform. The scissor-type lifting mechanism is hydraulically driven to achieve lifting. Rollers are provided at the support feet of the scissor-type lifting mechanism to facilitate the movement of the three-phase common-box bus conductor support device 5.

[0067] A fixed connecting plate 52 is provided between the two forks of the liftable support base 51. The lower end of the support column 53 has a stepped surface. The support column 53 passes through the fixed connecting plate 52 and the stepped surface presses against the fixed connecting plate 52. One end passing through the fixed connecting plate 52 is tightened by the support column tightening nut 59. The support column tightening nut 59 constitutes a fixing nut to fix the support column 53 to the fixed connecting plate 52. At the same time, the support column 53 is provided with a slot located on the upper side of the fixed connecting plate 52. A support column limiting plate 57 is fixed on the upper plate surface of the fixed connecting plate 52 near the support column 53. By inserting the end of the support column limiting plate 57 into the slot, the support column 53 is prevented from rotating when the support column tightening nut 59 loosens.

[0068] The support column 53 is provided with two side support arms 510 and a middle support arm 513. The upper end of the side support arm 510 is bolted to the inner support seat side phase support plate 515. The inner support seat side phase support plate 515 forms a support arc plate. The top end of the side support arm 510 is provided with a bent section. The upper surface of the bent section forms an installation surface for fixing the inner support seat side phase support plate 515. The bent section of the side support arm 510 is provided with an elongated hole. By adjusting the assembly position of the connecting bolts on the inner support seat side phase support plate 515 in the elongated hole, the center distance of the two inner support seat side phase support plates 515 can be adjusted to adapt to the assembly requirements of different types of phase spacing common busbar conductive rods 002.

[0069] The lower end of the side support arm 510 is movably mounted on the support column 53, and the upper end can extend outward or retract relative to the support column 53. The middle part of the side support arm 510 is hinged to one end of the connecting rod 511, and the other end of the connecting rod 511 is hinged to the upper end of the support column 53. The connecting rod 511, the two side support arms 510, and the column form an umbrella-shaped structure that can open and close. The connecting rod 511 is used to control the opening and closing angle of the side support arm 510. The upper end of the support column 53 is provided with an upper fixing seat 512, which is tightly fitted to the support column 53. The side of the upper fixing seat 512 is connected to the connecting rod 511. The position of the upper fixing seat 512 constitutes the connection point between the connecting rod and the support column. By adjusting the relative position of the upper fixing seat 512 and the support column 53, the opening and closing angle of the side support arm 510 can be controlled.

[0070] The lower end of the support column 53 is movably fitted with a lower movable seat 55, and the lower end of the side support arm 510 is hinged to the lower movable seat 55. The lower end of the side support arm 510 is movably installed on the support column 53 through the lower movable seat 55. The position of the lower movable seat 55 constitutes the connection point between the side support arm and the support column. The support column 53 is a stud, and the support column 53 is also provided with a retaining structure to keep the side support arm 510 in an inward or outward state. The retaining structure is a rotating seat 54 threaded onto the support column 53. The rotating seat 54 and the support column 53 are engaged by a trapezoidal thread. The rotating seat 54 is located above and supports the lower movable seat 55. The rotating seat 54 is a stepped shaft structure. The center hole of the lower movable seat 55 is a stepped hole. The small diameter section of the stepped shaft of the rotating seat 54 is inserted into the large diameter section of the center hole of the lower movable seat 55. Furthermore, the outer circumferential surface of the part of the rotating seat 54 that is inserted into the lower movable seat 55 is provided with an annular groove. The rotating seat 54 is provided with a threaded hole corresponding to the position of the annular groove. By screwing the rotating seat limiting bolt 58 into the threaded hole and making it extend into the annular groove, the rotating seat 54 and the lower movable seat 55 are connected, ensuring that the rotating seat 54 rotates relative to the lower movable seat 55 and can drive the lower movable seat 55 to move up and down, thereby driving the side support arm 510 to open and close. The rotating seat 54 has a threaded hole on its side, through which a rotating seat handle 56 is connected to facilitate the rotation of the rotating seat 54. The lower end of the side support arm 510 is hinged to the lower movable seat 55, so that the lower movable seat 55 is positioned at a lower height. This allows the lower movable seat 55 to remain outside the busbar cylinder 001 even after the three-phase common busbar conductor support device 5 is inserted into the busbar cylinder 001. This enables the side support arm 510 to be extended and retracted by moving the lower movable seat 55 outside the cylinder, facilitating personnel operation.

[0071] The middle support arm 513 has an inner support plate 516 at its top end. The inner support plate 516 is bolted to the middle support arm 513 and is used to support the middle phase conductor of the common busbar. A hexagonal blind hole is provided at the top of the support column 53, and a threaded blind hole is provided on the bottom surface of the middle support arm 513. The middle support arm adjusting bolt 514 is connected to the threaded blind hole, and the bottom of the middle support arm 513 is inserted into the hexagonal blind hole at the top of the support column 53. The hexagonal blind hole provides an anti-rotation fit for the middle support arm 513, ensuring that the support groove formed by the support arc plate faces the same direction. The height of the inner support plate 516 is adjusted by adjusting the depth to which the middle support arm adjusting bolt 514 is screwed into the middle phase support arm to accommodate the assembly requirements of common busbar conductors with different phase spacings.

[0072] like Figure 12 , Figure 13 , Figure 14 As shown, based on the center distance of the three-phase conductors in the three-phase common-box busbar, adjust the center distance of the two inner support seats and phase support plates 515 in the normal open state of the two side support arms 510 of the three-phase common-box busbar conductor support device 5, and adjust the height of the phase support plate 516 in the inner support seat; lower the three-phase common-box busbar conductor support device 5 to the lowest position, and adjust the retraction angle of the side support arms 510 of the three-phase common-box busbar conductor support device 5 to the minimum; remove the middle support arm 513; move the three-phase common-box busbar conductor support device 5 below the busbar cylinder 001 and make it directly opposite the pull-out 005; raise the height of the three-phase common-box busbar conductor support device 5 so that the three-phase common-box busbar conductor support device 5 is in the correct position. The inner support side phase support plate 515 of the busbar conductor support device 5 extends into the bottom opening 005 of the busbar cylinder 001; the middle support arm 513 is installed from the opening of the busbar cylinder 001; the outward angle of the two side support arms 510 of the three-phase common box busbar conductor support device 5 is adjusted to ensure that the three-phase conductive rods 002 can fall onto the inner support side phase support plate 515 and the middle phase support plate 516 of the inner support of the three-phase common box busbar conductor support device 5 respectively; the height of the three-phase common box busbar conductor support device 5 is adjusted to support the three-phase conductive rods 002, so that the end of the conductive rod 002 away from the first contact seat 041 is supported on the three-phase common box busbar conductor support device 5.

[0073] After the three-phase conductor rod 002 is stabilized, the movable support 4 inside the conductor rod is taken out from the opening on the side of the busbar cylinder 001 near the pull-out 005.

[0074] like Figure 15 , Figure 16 , Figure 17As shown, the second contact seat 042 is assembled onto the second support insulator 032. After assembly, the second support insulator 032 is lifted to connect the conductive rod 002 with the second contact seat 042 and the second support insulator 032 with the busbar cylinder 001. After connection, the height of the three-phase common-box busbar conductor support device 5 is lowered to a certain level beforehand. Then, the side support arms 510 of the three-phase common-box busbar conductor support device 5 are closed to the minimum angle. Finally, the height of the three-phase common-box busbar conductor support device 5 is reduced to the minimum and removed from the bottom pull-out port 005 of the busbar cylinder 001. The pull-out port 005 is then sealed. At this point, the assembly of the three-phase common-box busbar is complete.

[0075] By extending the three-phase common busbar conductor support device 5 from bottom to top into the busbar cylinder 001 through the pull-out 005, the lifting operation is simple, and the use of ground support is conducive to stability and reliability. The conductive rod 002 is supported by the outward and inward support arms 510 on both sides, which can easily realize the insertion and withdrawal operation of the three-phase common busbar conductor support device 5 from the pull-out 005. The size of the pull-out 005 does not need to be set too large to meet the assembly requirements.

[0076] In the above embodiments, the middle support arm is detachably connected to the top of the support column. The middle support arm is first removed, and after the two side support arms enter the busbar cylinder, the middle support arm is installed from the opening of the busbar cylinder. In other embodiments, the middle support arm is not detachable and is welded and fixed to the support column. By setting the height of the busbar cylinder to be relatively high, the three-phase common box busbar conductor support device is pushed into the lower part of the pull-out.

[0077] In the above embodiments, the rotating seat of the three-phase common bus conductor support device constitutes a retaining structure to maintain the position of the lower movable seat. In other embodiments, multiple limiting holes can be provided axially on the support column, and limiting pins can be inserted into the limiting holes to maintain the position of the lower movable seat.

[0078] In the above embodiments, an annular groove is provided on the outer circumferential surface of the rotating seat, and a threaded hole is provided on the lower movable seat. The threaded hole corresponds to the position of the annular groove. A limiting bolt is screwed into the threaded hole and extends into the annular groove to achieve circumferential relative rotation and axial relative fixation of the rotating seat and the lower movable seat. In other embodiments, a limiting ring can also be provided to detachably fix the limiting ring to the lower movable seat, and a rotation gap is formed between the limiting ring and the lower movable seat. The rotation gap accommodates the outward flange of the rotating seat to meet the rotation of the rotating seat. At the same time, the limiting ring and the lower movable seat together form an axial limit on the rotating seat.

[0079] In the above embodiments, the identical set of rotating seats and lower movable seats, along with the rotating seat limiting bolts, allows the connection point between the side support arm and the support column to move along the support column. The upper fixed seat is fixed to the support column, preventing the connection point between the connecting rod and the support column from moving. In other embodiments, a rotating seat and an upper movable seat can be provided at the upper end of the support column. The identical set of rotating seats and upper movable seats, along with the rotating seat limiting bolts, allows the connection point between the connecting rod and the support column to move along the support column. A lower fixed seat, fixed to the support column, is provided at the lower end of the support column and connected to the lower end of the side support arm, preventing the connection point between the side support arm and the support column from moving along the support column. In other embodiments, identical sets of rotating seats and movable seats, along with limiting bolts, can be provided at both the upper and lower ends of the support column, allowing both the connection points between the side support arm and the support column, as well as the connection point between the connecting rod and the support column, to move along the support column.

[0080] In the above embodiments, the supporting arc plate constitutes a supporting end for supporting the bus conductor. In other embodiments, the top of each side supporting arm and the top of the middle supporting arm can also be used directly to support the bus conductor.

[0081] In the above embodiments, a fixing nut is screwed onto the part of the supporting column that protrudes from the fixing connecting plate at the lower end to fix the supporting column to the fixing connecting plate. In other embodiments, the supporting column can also be directly welded to the fixing connecting plate, or the fixing connecting plate can be omitted and the supporting column can be directly fixed to the liftable support base.

[0082] In the above embodiments, the length of the middle support arm is adjusted by the middle support arm adjustment bolt so that the height can be adjusted after being inserted into the blind hole at the top of the support column. In other embodiments, the middle support arm can also be a stud, which is directly screwed onto the top of the support column. The height can be adjusted by screwing the middle support arm. Threaded holes are provided on the wall of the threaded hole on the support column so that the set screw can pass through to fix the middle support arm.

[0083] In the above embodiments, the position of the support arc plate in the radial direction of the support column is adjustable by setting an elongated hole. In other embodiments, a slider can be set on the bottom surface of the support arc plate, and a groove can be set at the top of the side support arm. The position of the support arc plate can be adjusted by sliding the support arc plate in the groove. A threaded hole is set on the groove so that the set screw can pass through to fix the support arc plate.

[0084] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-phase common-enclosure busbar conductor support device, characterized in that, The system includes a liftable support base, which comprises a double-forklift platform and a scissor-lift mechanism located below the double-forklift platform. A support column is fixedly installed on the liftable support base. Two side support arms and a central support arm are connected to the support column. The two side support arms are symmetrically arranged. The top of each side support arm and the top of the central support arm each have a support end for supporting busbar conductors. A connecting rod is hinged to the middle of each side support arm, with the other end of the connecting rod connected to the support column. Part of the side support arms, the connecting rod, and the support column together form a triangle. At least one of the connection points between the side support arm and the support column, and between the connecting rod and the support column, is capable of displacement along the support column, allowing the top of the side support arm to retract inwards and outwards relative to the support column. Of the connection points between the side support arm and the support column, and between the connecting rod and the support column, at least one is capable of displacement along the support column, allowing the top of the side support arm to retract inwards and outwards relative to the support column. The connection point between the support arm and the support column can be displaced along the support column. A lower movable seat is fitted on the support column, and the lower ends of each side support arm are hinged to the lower movable seat. The support column is a stud, and a rotating seat is screwed onto the support column. The rotating seat is located below the lower movable seat. The rotating seat and the lower movable seat are assembled together with relative circumferential rotation and axial fixation. When the rotating seat rotates around the support column, it can drive the lower movable seat to move up and down along the support column, thereby changing the vertical position of the connection point between the side support arm and the support column. The rotating seat is inserted into the center hole of the lower movable seat. The outer circumferential surface of the part of the rotating seat that is inserted into the lower movable seat is provided with an annular groove. The lower movable seat is provided with a threaded hole corresponding to the position of the annular groove. The rotating seat limit bolt is screwed into the threaded hole and extended into the annular groove, so that the rotating seat and the lower movable seat are assembled together with relative circumferential rotation and axial fixation.

2. The three-phase common-box busbar conductor support device according to claim 1, characterized in that, The liftable support base is provided with a fixed connecting plate with a through hole. The lower end of the support column is provided with a step, and the step of the support column is provided with an external thread. The through hole is passed through the lower end of the support column, and the stepped surface of the step abuts against the fixed connecting plate. A fixing nut is screwed on the part of the lower end of the support column that passes through the through hole to fix the support column to the fixed connecting plate.

3. The three-phase common-box busbar conductor support device according to claim 1, characterized in that, The middle support arm can be detachably connected to the top of the support column.

4. The three-phase common-box busbar conductor support device according to claim 3, characterized in that, The middle support arm is height-adjustable and connected to the top of the support column.

5. The three-phase common-box busbar conductor support device according to claim 4, characterized in that, The top of the support column has a blind hole for inserting the middle support arm, and the bottom end face of the middle support arm has an adjusting threaded hole, in which the adjusting bolt of the middle support arm is screwed.

6. The three-phase common-box busbar conductor support device according to claim 1, characterized in that, The top of the side support arm is connected to a support arc plate, which constitutes the support end. The position of the support arc plate in the radial direction of the support column is adjustable.

7. The three-phase common-enclosure busbar conductor support device according to claim 6, characterized in that, The top of the side support arm has a mounting surface for fixing and connecting the support arc plate. The mounting surface has an elongated hole, and the support arc plate has bolt holes. The support arc plate is fixed to the side support arm by bolts passing through the bolt holes and the elongated holes and nuts.

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