CN118610811B - An insulated tubular busbar telescopic connection mechanism - Google Patents

Abstract

The present invention provides an insulated tubular busbar telescopic connection mechanism, which relates to the technical field of busbar telescopic connection, and includes a plurality of groups of connecting copper bars, each group of connecting copper bars is provided with two connecting ends, one of which is connected to a busbar segment through a connecting terminal, and the other is connected to a device through a connecting terminal; a connecting unit that firmly connects the connecting terminal to the connecting end of the connecting copper bar in a frame-type clamping and fixing manner. According to an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention, a locking frame and a connecting seat cooperate to uniformly control the connecting unit to fix the joint and the connecting area of the connecting copper bar together in a frame-type clamping and fixing manner. During the entire process of connecting the busbar and the device, it is only necessary to insert the connecting area of the connecting copper bar and the joint of the connecting terminal on the busbar segment between the side limit ends of the corresponding connecting unit, and then the locking frame uniformly controls the upper limit end to limit the connection area and the joint.

Description

An insulated tubular busbar telescopic connection mechanism

Technical Field

The invention relates to the technical field of busbar telescopic connection, in particular to an insulating tube type busbar telescopic connection mechanism.

Background Art

Insulated tubular busbar is a special type of busbar used in power transmission and distribution systems, which can provide higher safety and reliability while reducing electromagnetic interference and space occupation. It is widely used in power plants, substations, industrial facilities and other places that require high voltage and high current transmission. Insulated tubular busbar is usually connected to electrical equipment (such as transformers, switchgear, etc.) through flexible copper bars or copper strips. This connection method allows a certain degree of mechanical movement between the busbar and the equipment, such as expansion or contraction caused by thermal expansion and contraction, as well as slight vibration, thereby protecting the entire electrical system from damage caused by mechanical stress.

However, the aforementioned connection method requires the use of a large number of fasteners for connection, especially the connection and installation of multiple busbars. As shown in FIG1 , the two connection ends before and after the copper busbar are respectively connected to the busbar segment and the equipment through connection terminals. A large number of fasteners are used at the connection to fix the connection. The entire connection process is cumbersome and complicated, which seriously reduces the connection and installation efficiency and convenience of the busbar and the equipment.

Summary of the invention

The present invention provides an insulated tubular busbar telescopic connection mechanism to solve the problem of low efficiency and convenience in the installation of multiple busbars connected to equipment through connecting copper bars in the related art.

The present invention provides an insulated tubular busbar telescopic connection mechanism, which comprises a plurality of groups of connecting copper bars, each group of connecting copper bars is provided with two connecting ends, one of which is connected to a busbar section through a connecting terminal, and the other is connected to a device through a connecting terminal; a connecting unit which firmly connects the connecting terminal with the connecting end of the connecting copper bar in a frame-type clamping and fixing manner, the connecting unit comprises a limit base and an upper limit end, the limit base is provided with a lower limit end, a side limit end and a reinforcement piece, the side limit ends are symmetrically distributed on the lower limit end and constitute a preliminary limit area, the upper limit end moves downward to limit and simultaneously presses down the reinforcement piece, and the reinforcement piece is reinforced. The parts generate lateral extrusion force to squeeze the side limit ends from both sides to increase the clamping force of the side limit ends. The connection units connecting the copper bar and the busbar section are uniformly installed on connection bar one, and the connection units connecting the copper bar and the equipment are uniformly installed on connection bar two. Connection bar one and connection bar two are in a relatively independent state. Connection bar one and connection bar two both include a connection seat and a locking frame. The locking frame is hingedly connected to the connection seat and a locking member is arranged between the two. The limit bases in the corresponding connection units are all connected to the connection seat, and the corresponding upper limit ends are all connected to the locking frame, wherein the side limit end and the lower limit end are an integrated structure and the integrated structure has the ability to deform.

In one possible implementation, the reinforcement member includes a plurality of extrusion heads and a lower pressure rod. The extrusion heads are connected to the limit base by sliding left and right, and the lower pressure rods are connected to the limit base by sliding up and down. The extrusion heads are divided into two groups and are symmetrically distributed and are respectively located on the opposite sides of the corresponding symmetrical side limit ends. The lower pressure rods correspond to the extrusion heads one by one and a wedge-shaped contact area is provided between the two. The extrusion heads are all in a relatively independent state, and in the process of pressing the upper limit end downward to limit, the extrusion head and the corresponding lower pressure rod constitute an independent reinforcement unit. As the upper limit end moves downward to limit, the lower pressure rod is pressed downward by the upper limit end and squeezes the side limit end through the extrusion head to increase the clamping force of the side limit end.

In one possible implementation, one side of the locking frame is hinged to the connecting seat, and the side opposite to the side is connected to the connecting seat through a locking piece, and a reinforcement locking piece is arranged between the locking frame and the connecting seat, and the reinforcement locking piece includes a reinforcement seat provided with a reinforcement groove and a control seat provided with a reinforcement block, the reinforcement seat is fixedly installed on the connecting seat, the control seat is slidably arranged on the locking frame, and the control seat and the locking frame are locked and connected by a locking screw, and after the locking frame is connected to the connecting seat through the locking piece, the control seat is moved to insert the reinforcement block into the corresponding reinforcement groove to limit and fix the locking frame and the connecting seat.

In one possible implementation, the connection row 1 also includes a clamping seat arranged on the connection seat and a clamping member arranged on the locking frame. The clamping seat and the clamping member correspond one-to-one and are used to clamp and fix the busbar segment, and a preliminary limiting area with an arc structure is provided on the clamping seat.

In one possible implementation, the number of connecting copper bars in each group of connecting copper bars is at least one, and both ends of the connecting copper bars are connecting areas with a rectangular structure, and a rectangular joint is provided on the connecting terminal, which overlaps with the corresponding connecting area and is inserted between the symmetrical side limit ends in the corresponding connecting unit.

In a possible implementation, a one-way limiting end is provided on the side limiting end, and the one-way limiting end is used to limit the end of the connection area or the joint abutting against the side limiting end.

The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. According to an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention, the locking frame and the connecting seat cooperate to uniformly control the connection unit to fix the joint and the connection area of the connecting copper busbar in a frame-type clamping and fixing manner. During the entire busbar and equipment connection process, it is only necessary to insert the connection area of the connecting copper busbar and the joint of the connecting terminal on the busbar segment between the side limit ends of the corresponding connection units, and then the locking frame uniformly controls the upper limit end to limit the connection area and the joint, which greatly reduces the use of fasteners. The entire connection and installation process is efficient and fast and has high stability and reliability.

2. According to an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention, when the connection area of the copper busbar overlaps with the corresponding joint and is inserted between the symmetrical side limit ends in the corresponding connection unit, the side limit ends initially clamp and fix it, and then during the process of limiting and fixing the lower limit end, the connection area and the joint are further reinforced by the reinforcement piece, so that the connection area and the joint are firmly connected together. On the basis of improving the efficiency and convenience of the connection and installation process, the stability of the connection between the connection area and the joint is further improved, thereby making the busbar and the equipment firmly connected together.

3. According to an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention, the lower pressure rod and the corresponding extrusion head constitute a number of independent reinforcement units, which further improve the stability and reliability of the connection between the joint and the connection area on the basis of improving the stability of the joint and the connection area.

4. According to an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention, the locking frame and the connecting seat are locked together by a locking piece and after locking, they are further locked by a reinforcing locking piece, so that the connecting seat and the locking frame are further firmly connected together, which is beneficial to improve the stability and reliability of the connection between the joint and the connection area.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a structure in which a large number of fasteners are used to connect copper bars, busbars and equipment.

FIG. 2 is a schematic structural diagram of a connection seat, a locking frame, and a mounting frame of an insulating tube-type busbar telescopic connection mechanism provided in an embodiment of the present invention.

3 is a schematic diagram of the structure of a connecting copper bar and a connecting terminal of an insulating tubular busbar telescopic connecting mechanism provided by an embodiment of the present invention, viewed from a top view.

FIG. 4 is a schematic diagram of a connection terminal and a connection copper busbar placement process of an insulated tubular busbar telescopic connection mechanism provided by an embodiment of the present invention.

5 is a schematic structural diagram of a locking frame and a connecting seat of an insulating tube-type busbar telescopic connection mechanism provided by an embodiment of the present invention when the locking frame and the connecting seat are not locked and connected.

FIG. 6 is a schematic structural diagram of a reinforcement locking member of an insulating tubular busbar telescopic connection mechanism provided in an embodiment of the present invention.

FIG. 7 is an enlarged view of point A in FIG. 6 .

FIG. 8 is a schematic structural diagram of a reinforcement member of an insulating tubular busbar telescopic connection mechanism provided in an embodiment of the present invention.

In the figure: 1. Connecting copper busbar; 2. Connecting terminal; 3. Busbar section; 4. Connecting unit; 41. Limiting base; 42. Upper limit end; 43. Lower limit end; 44. Side limit end; 45. Reinforcement piece; 451. Extrusion head; 452. Lower pressure rod; 453. Contact area; 46. One-way limit end; 5. Connecting seat; 6. Locking frame; 7. Locking piece; 8. Reinforcement locking piece; 81. Reinforcement groove; 82. Reinforcement seat; 83. Reinforcement block; 84. Control seat; 85. Locking screw; 9. Clamping seat; 10. Clamping piece; 11. Connector; 12. Mounting frame; 13. Fastener.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

Please refer to Figures 1, 2, 3 and 4. An insulated tubular busbar telescopic connection mechanism includes several groups of connecting copper bars 1, each group of connecting copper bars 1 is provided with two connecting ends. As shown in Figures 1 and 2, there are four groups of connecting copper bars 1 from left to right, and the number of connecting copper bars 1 in each group of connecting copper bars 1 is two. The front and rear ends of each connecting copper bar 1 are both connecting areas of a rectangular structure, and the two connecting areas on the front side of each group of connecting copper bars 1 are one connecting end, and the two connecting areas on the rear side are one connecting end. The front connecting end is connected to the busbar section 3 through a connecting terminal 2, and the connecting terminal 2 is fixedly connected to the busbar section 3. The rear connecting end is connected to the equipment through the connecting terminal 2, and the connecting terminal 2 is fixedly installed on the equipment. The connecting end and the connecting terminal 2 are fixedly connected together through a connecting unit 4, wherein the connection structure of the front connecting terminal 2 and the rear connecting terminal 2 will change to a certain extent according to the connection requirements. There are two connectors 11 on the front connecting terminal 2 and they correspond one-to-one to the connecting copper busbar 1, while there is one connector 11 on the rear connecting terminal 2. Two connecting copper busbars 1 are connected to the connector 11 together. The connecting unit 4 corresponds one-to-one to the connector 11, and the connector 11 is a rectangular structure.

Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 8, the connection unit 4 connects the connection end with the connection terminal 2 quickly and stably in a frame-type clamping and fixing manner. The connection unit 4 includes a limiting base 41 and an upper limiting end 42. The limiting base 41 is provided with a lower limiting end 43, a side limiting end 44 and a reinforcing member 45. The side limiting ends 44 are symmetrically distributed on the lower limiting end 43 and form a preliminary limiting area. As shown in Fig. 4, during the process of connecting the busbar section 3 with the equipment, the limiting base 41 is uniformly installed according to the position of the connection terminal 2 on the equipment. As shown in Fig. 4, after the limiting base 41 is installed, the connector 11 of the connection terminal 2 on the equipment is located in the symmetrical side limiting end 44 in the corresponding connection unit 4. Then, the connection area of the copper busbar 1 and the connector 11 of the connection terminal 2 on the busbar section 3 are correspondingly inserted between the symmetrical side limit ends 44 in the corresponding connection unit 4 in an overlapping state. At this time, the side limit ends 44 perform preliminary clamping and limiting on the connector 11 and the corresponding connection area. Then, the upper limit end 42 limits the connector 11 and the corresponding connection area from above and cooperates with the lower limit end 43 to clamp and fix the connector 11 and the corresponding connection area, and is combined with the symmetrically distributed side limit ends 44 to form a frame-type clamping and fixing unit. At the same time, during the process of the upper limit end 42 moving downward to limit the position, the side limit end 44 of the reinforcement member 45 is squeezed to increase the clamping force of the side limit end 44, so that the connector 11 and the corresponding connection area are firmly connected together. Compared with the original connection method, the above connection process greatly reduces The use of fasteners 13 is eliminated, which effectively improves the efficiency and convenience of connecting and installing the busbar and the equipment, and can fully and effectively connect the busbar and the equipment firmly together, ensuring the stability and reliability of the power transmission and distribution system. Among them, a one-way limit end 46 is provided on the side limit end 44, and the one-way limit end 46 is used to limit the end of the connection area or the joint 11 abutting against the side limit end 44. As shown in Figure 4, in the front connecting unit 4, the one-way limit end 46 set on the front side of the right side limit end 44 limits the connection area of the front end of the copper bus 1, and the one-way limit end 46 set on the rear side of the left side limit end 44 limits the joint 11 in the connection terminal 2 on the bus section 3, so as to facilitate the accurate and stable insertion of the joint 11 and the corresponding connection area between the symmetrical side limit ends 44.

Referring to Figures 2, 5, 4 and 8, the side limit end 44 and the lower limit end 43 are an integrated structure and the integrated structure has a certain elastic deformation capability. As shown in Figure 8, the integrated structure is in a U-shape as a whole, and the side limit ends 44 on the left and right sides are squeezed toward the middle when they are stressed, and the integrated structure and the upper limit end 42 are both made of insulating materials, which is conducive to simplifying the structure and improving the reliability and stability of the connection and installation of the busbar and the equipment, and on the other hand, avoiding interference between adjacent busbars and ensuring the stability and reliability of the power transmission and distribution system.

Referring to Fig. 2, Fig. 4, Fig. 3 and Fig. 5, the connection units 4 connecting the copper bar 1 and the busbar section 3 are all uniformly installed on the connection bar 1, and the connection units 4 connecting the copper bar 1 and the equipment are all uniformly installed on the connection bar 2. The connection bar 1 and the connection bar 2 are in a relatively independent state. The connection bar 1 and the connection bar 2 both include a connection seat 5 and a locking frame 6. The locking frame 6 is hingedly connected to the connection seat 5 and a locking member 7 is arranged between the two. The locking member 7 is a buckle member. The limiting bases 41 in the corresponding connection units 4 are all connected to the connection seat 5, and the corresponding upper limit ends 42 are all connected to the locking frame 6. As shown in Fig. 2 and Fig. 5, the connection seat 5 in the connection bar 1 is fixedly connected to the mounting frame 12, and the connection seat 5 in the connection bar 2 is limitedly slidably connected to the mounting frame 12. The right side of the locking frame 6 is hingedly connected to the connection seat 5, and the left side is locked and connected to the connection seat 5 through the locking member 7. When the connector 11 and the connection area are inserted between the symmetrical side limit ends 44 in the corresponding connection unit 4, the locking frame 6 is rotated downward to uniformly control the upper limit end 42 thereon to press down to limit, fix and lock the corresponding connector 11 and the connection area. The whole process is quick and convenient, and the locking frame 6 is hinged on the right side to fully open the space above the limit base 41, which is convenient for the installation and placement of the connection terminal 2 on the copper bus 1 and the bus section 3.

Referring to Fig. 2, Fig. 3, Fig. 5, Fig. 6 and Fig. 7, a reinforcement locking member 8 is provided between the locking frame 6 and the connecting seat 5, and the reinforcement locking member 8 includes a reinforcement seat 82 provided with a reinforcement groove 81 and a control seat 84 provided with a reinforcement block 83, the reinforcement seat 82 is fixedly mounted on the corresponding connecting seat 5 and distributed from left to right, the control seat 84 is provided on the locking frame 6 for limited sliding left and right, and the control seat 84 and the locking frame 6 are locked and connected by a locking screw 85, and the reinforcement block 83 corresponds to the reinforcement groove 81 one by one, when the locking frame 6 is locked and connected with the connecting seat 5 by the locking member 7, the reinforcement block 83 faces the corresponding reinforcement groove 81, and the control seat 84 is moved leftward to insert the reinforcement block 83 into the corresponding reinforcement groove 81. As shown in Fig. 7, an inclined limiting surface is provided on the reinforcement block 83, and a limiting protrusion with an arc structure is provided in the reinforcement groove 81. During the process of inserting the reinforcement block 83 into the reinforcement groove 81, with the cooperation of the limiting protrusion and the limiting surface, the locking frame 6 and the connecting seat 5 are limited, so that the connecting seat 5 and the locking frame 6 are further firmly connected together, and the control seat 84 is firmly locked in the current position through the locking screw 85, and the connecting seat 5 and the locking frame 6 are correspondingly firmly connected together, which is beneficial to improve the stability and reliability of the connection between the joint 11 and the connecting area, wherein the locking screw 85 is threadedly connected to the control seat 84 and rotatably connected to the locking frame 6, and the locking screw 85 is rotated to control the movement of the control seat 84 and instantly lock the control seat 84.

Referring to FIGS. 2, 3, 5, 4 and 8, the reinforcement member 45 includes a plurality of extrusion heads 451 and a lower pressure rod 452. The extrusion heads 451 are connected to the limit base 41 by sliding left and right, and the lower pressure rod 452 is connected to the limit base 41 by sliding up and down, and a spring is connected between the lower end of the lower pressure rod 452 and the limit base 41. The extrusion heads 451 are divided into two groups and are symmetrically distributed left and right and are respectively located on the opposite side of the corresponding symmetrical side limit end 44. The lower pressure rod 452 corresponds to the extrusion heads 451 one by one and a wedge-shaped contact area 453 is provided between the two. The pressure heads 451 are all in a relatively independent state, and in the process of pressing the upper limit end 42 downward to limit the position, the extrusion head 451 and the corresponding lower pressure rod 452 constitute an independent reinforcement unit. When the upper limit end 42 moves downward to limit the position, the lower pressure rod 452 is pushed by the upper limit end 42 and moves downward and passes through the contact area 453 to make the extrusion head 451 squeeze the side limit end 44, thereby increasing the clamping and fixing force of the side limit end 44 and improving the stability of the connection between the joint 11 and the connection area. The reinforcement units are independent of each other, which is beneficial to improving the stability and reliability of the connection between the joint 11 and the connection area.

Referring to Figures 2, 3, 4 and 5, the connection row 1 also includes a clamping seat 9 arranged on the connection seat 5 and a clamping member 10 arranged on the locking frame 6. The clamping seat 9 corresponds to the clamping member 10 one by one and is used to clamp and fix the bus section 3, and a preliminary limiting area with an arc structure is provided on the clamping seat 9. As shown in Figure 4, when the joint 11 and the connection area are inserted into the middle of the symmetrical side limiting ends 44 in the corresponding connection unit 4 in an overlapping state, the bus section 3 is synchronously placed in the preliminary limiting area on the clamping seat 9, and the bus section 3 is limited by the preliminary limiting area, so that the clamping member 10 limits the bus section 3 from above as the locking frame 6 rotates, and cooperates with the clamping seat 9 to clamp and fix the bus section 3, further improving the convenience and efficiency of the connection and installation of the bus and equipment.

In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. An insulating tubular busbar telescopic connection mechanism which is characterized in that: the device comprises a plurality of groups of connecting copper bars (1), wherein each group of connecting copper bars (1) is provided with two connecting ends, one connecting end is connected with a bus section (3) through a connecting terminal (2), and the other connecting end is connected with equipment through the connecting terminal (2);

The connecting unit (4) is used for firmly connecting the connecting terminal (2) and the connecting end of the connecting copper bar (1) together in a frame clamping and fixing mode, the connecting unit (4) comprises a limiting base (41) and an upper limiting end (42), a lower limiting end (43), a side limiting end (44) and a reinforcing member (45) are arranged on the limiting base (41), the side limiting end (44) is symmetrically distributed on the lower limiting end (43) and forms a primary limiting area, the upper limiting end (42) moves downwards to limit and synchronously presses the reinforcing member (45), the reinforcing member (45) generates lateral extrusion force, and the side limiting end (44) is extruded from two sides to increase the clamping force of the side limiting end (44);

The connecting units (4) between the connecting copper bar (1) and the bus section (3) are uniformly arranged on the first connecting bar, the connecting units (4) between the connecting copper bar (1) and the equipment are uniformly arranged on the second connecting bar, and the first connecting bar and the second connecting bar are in relatively independent states;

The first connecting row and the second connecting row respectively comprise a connecting seat (5) and a locking frame (6), the locking frame (6) is hinged with the connecting seat (5), a locking piece (7) is arranged between the locking frame and the connecting seat, a limiting base (41) in a corresponding connecting unit (4) is respectively connected to the connecting seat (5), and a corresponding upper limiting end (42) is respectively connected to the locking frame (6).

2. The insulated tubular busbar telescopic connection according to claim 1, wherein: the reinforcement (45) includes a plurality of extrusion heads (451) and lower depression bar (452), sliding connection is about extrusion head (451) on spacing base (41), sliding connection is about lower depression bar (452) on spacing base (41), extrusion head (451) fall into two sets of and symmetrical distribution and lie in one side that corresponding symmetry side limit end (44) is on the back respectively, be provided with wedge contact zone (453) between extrusion head (452) and extrusion head (451) one-to-one and the two, extrusion head (451) all are in relative independent state, and in-process that upper limit end (42) were pushed down spacing, extrusion head (451) constitutes independent reinforcement unit with corresponding lower depression bar (452), along with upper limit end (42) move down spacing, lower depression bar (452) are pushed down and are moved and are pressed side limit end (44) in order to increase the clamping force of side limit end (44) through extrusion head (451).

3. An insulated tubular busbar telescopic connection according to claim 1 or 2, wherein: one side of the locking frame (6) is hinged with the connecting seat (5), one side opposite to the side is connected with the connecting seat (5) through a locking piece (7), a reinforcing locking piece (8) is arranged between the locking frame (6) and the connecting seat (5), the reinforcing locking piece (8) comprises a reinforcing seat (82) provided with a reinforcing groove (81) and a control seat (84) provided with a reinforcing block (83), the reinforcing seat (82) is fixedly arranged on the connecting seat (5), the control seat (84) is slidably arranged on the locking frame (6) and is in locking connection with the locking frame (6) through a locking screw (85), and after the locking frame (6) is connected with the connecting seat (5) through the locking piece (7), the control seat (84) is moved to enable the reinforcing block (83) to be inserted into the corresponding reinforcing groove (81) to limit and fix the locking frame (6) and the connecting seat (5).

4. The insulated tubular busbar telescopic connection according to claim 2, wherein: the first connecting row further comprises clamping seats (9) arranged on the connecting seat (5) and clamping pieces (10) arranged on the locking frame (6), the clamping seats (9) and the clamping pieces (10) are in one-to-one correspondence and used for clamping and fixing the bus section (3), and the clamping seats (9) are provided with preliminary limiting areas of arc structures.

5. The insulated tubular busbar telescopic connection according to claim 1, wherein: the number of the connecting copper bars (1) in each group of connecting copper bars (1) is at least one, the two ends of the connecting copper bars (1) are both rectangular connecting areas, the connecting terminals (2) are provided with rectangular connectors (11), and the connectors (11) are overlapped with the corresponding connecting areas and are inserted between symmetrical side limiting ends (44) in the corresponding connecting units (4).

6. The insulated tubular busbar telescopic connection of claim 5, wherein: the side limiting end (44) is provided with a one-way limiting end (46), and the one-way limiting end (46) is used for limiting the end part of the joint (11) or the connecting area which is abutted on the side limiting end (44).

7. The insulated tubular busbar telescopic connection according to claim 1, wherein: the side limiting end (44) and the lower limiting end (43) are of an integrated structure, and the integrated structure has deformation capability.