Coaxial cable multi-pass branching device

Abstract

The embodiment of the invention provides a coaxial cable multi-pass branching device which comprises an insulation box body used for installing a coaxial cable, an outer conductor outgoing cable and an inner conductor outgoing cable. Wherein the coaxial cable passes through the opposite side walls of the insulation box body along the axial direction; the insulation box body is internally provided with an outer conductor crimping fitting used for connecting an outer conductor and an outer conductor outgoing cable; the outer conductor crimping fitting comprises a peripheral crimping part and an internal crimping part, the peripheral crimping part sleeves an outer conductor of the coaxial cable, the internal crimping part sleeves an insulating layer of the coaxial cable, and opposite wall surfaces of the peripheral crimping part and the internal crimping part compress the outer conductor; and the connecting busbar is used for connecting an opposite-side outer conductor of the coaxial cable, and one end is connected with the insulating box body. Therefore, connection between the coaxial cable, the outer conductor outgoing cable, the inner conductor outgoing cable and the inner conductor and the outer conductor on the opposite side of the coaxial cable is realized.

Description

Technical Field

[0001] This application relates to the technical field of cable accessories, and specifically, to a coaxial cable multi-way branching device. Background Art

[0002] Magnetic levitation aerospace boost launch uses a ground stator linear motor to accelerate a vehicle to a very high speed within a limited distance and then launch it. During the entire acceleration process, the time is short, only lasting for a few seconds, while the current passing through reaches tens of thousands of amperes. To ensure the required output thrust, the rated voltage is also relatively high. Therefore, the operating condition of the entire line is a high-power circuit with large current, high voltage, and short-time discharge.

[0003] The motor topology generally adopts a "single-sided motor" and a "double-sided motor". The latter can utilize the magnetic fields on both sides of the propulsion magnet simultaneously, with a higher magnetic field utilization rate. Therefore, most magnetic levitation aerospace boost technologies prefer the double-sided motor scheme. However, this scheme doubles the number of power supply cables, and when using segmented power supply or matrix switching power supply, the cable branch joints increase exponentially. To reduce the number of power supply cables and simultaneously reduce the voltage drop, magnetic levitation aerospace boost launch preferably uses coaxial cables. The branch joint structure of the coaxial cable is a tee joint, and the cable accessory of this structure is a new structure, which needs to meet the requirements of splitting the inner and outer conductors of the coaxial cable as the interface for the next device, and at the same time needs to ensure the function of the coaxial cable in series connection, and the entire splitting structure needs to ensure the current-carrying capacity and the insulation withstand voltage level. Summary of the Invention

[0004] An embodiment of this application provides a coaxial cable multi-way branching device to solve the problems that the existing structure cannot split and lead out the inner and outer conductors of the coaxial cable and the series connection of the coaxial cable.

[0005] To achieve the above purpose, this application provides the following technical solutions:

[0006] A coaxial cable multi-way branching device includes an insulating box body for installing a coaxial cable, an outer conductor lead-out cable, and an inner conductor lead-out cable; wherein, the coaxial cable axially passes through the opposite side walls of the insulating box body; the following are provided inside the insulating box body:

[0007] An outer conductor crimping fitting for connecting the outer conductor and the outer conductor lead-out cable; the outer conductor crimping fitting includes an outer peripheral crimping part and an inner crimping part. The outer peripheral crimping part is sleeved on the outer conductor of the coaxial cable, the inner crimping part is sleeved on the insulating layer of the coaxial cable, and the opposite walls of the outer peripheral crimping part and the inner crimping part press the outer conductor tightly.

[0008] A connecting busbar for connecting the opposite outer conductors of the coaxial cable and having one end connected to the insulating box body.

[0009] Optionally, the outer crimping member has a first sleeving through-hole for sleeving an outer conductor, the first sleeving through-hole extends axially and the aperture thereof tapers from outside to inside along the axial direction;

[0010] The inner crimping member has a protruding portion inserted into the first sleeving through-hole, and the protruding portion has a second sleeving through-hole for sleeving an insulating layer of a coaxial cable; the protruding portion extends axially and the outer diameter thereof tapers, and the outer conductor of the coaxial cable is pressed between the inner wall of the first sleeving through-hole and the outer wall of the protruding portion.

[0011] Optionally, the inner crimping member further includes an outer edge portion located at the contour outer edge of the large-diameter end of the second sleeving through-hole and extending radially outward, and the outer edge portion has a first mounting hole axially penetrating through the wall thickness;

[0012] The end wall of the outer crimping member is provided with a second mounting hole opposite to the first mounting hole, and a threaded fastener respectively passes through the first mounting hole and the second mounting hole to press the outer conductor.

[0013] Optionally, third mounting holes are respectively provided at the top and bottom of the outer crimping member;

[0014] The third mounting hole at the top of the outer crimping member is fixed to the outer conductor lead-out cable by a threaded fastener;

[0015] The third mounting hole at the bottom of the outer crimping member is fixed to the connecting busbar by a threaded fastener.

[0016] Optionally, it further includes an inner conductor crimping fitting for connecting the opposite inner conductors of the coaxial cable, as well as the inner conductor and the inner conductor lead-out cable; the inner conductor crimping fitting includes:

[0017] A first crimping terminal respectively sleeved on the opposite inner conductors of the coaxial cable;

[0018] A second crimping terminal sleeved on the inner conductor lead-out cable, and the first crimping terminal and the second crimping terminal are fixed by a threaded fastener.

[0019] Optionally, the first crimping terminal includes:

[0020] A first crimping sleeve and a first mounting plate which are perpendicular and fixed to each other, the first crimping sleeve is used for sleeving the inner conductor of the coaxial cable, and the first mounting plate has a plurality of fourth mounting holes for fixing to the second crimping terminal.

[0021] Optionally, the second crimping terminal includes a second crimping sleeve and a second mounting plate which are fixedly connected;

[0022] The second crimping sleeve is used for sleeving with the inner conductor lead-out cable, and the axis of the second crimping sleeve is arranged parallel to the second mounting plate;

[0023] The second mounting plate is provided with a fifth mounting hole, and a threaded fastener fixes the first mounting plate and the second mounting plate through the fourth mounting hole and the fifth mounting hole.

[0024] Optionally, the connecting busbar includes:

[0025] A U-shaped body;

[0026] Connecting plates, located at both ends of the opening of the U-shaped body and extending upward respectively, the connecting plates are provided with connecting mounting holes, and the connecting mounting holes are arranged opposite to the third mounting holes on the bottom wall of the peripheral crimping member.

[0027] Optionally, it further includes:

[0028] Insulator struts, respectively located at the longitudinal two ends of the U-shaped body, one end of the insulator strut is connected to the U-shaped body, and the other end is connected to the insulating box body.

[0029] Optionally, it further includes:

[0030] Cold shrinkage terminals, respectively sleeved and fixed on the insulating layers of the outer conductor of the coaxial cable, the insulating layer of the inner conductor, the insulating layer of the outer conductor lead-out cable, and the insulating layer of the inner conductor lead-out cable.

[0031] A coaxial cable multi-way branching device provided by an embodiment of the present application includes an insulating box body for installing a coaxial cable, an outer conductor lead-out cable, and an inner conductor lead-out cable; wherein, the coaxial cable axially passes through the opposite side walls of the insulating box body; an outer conductor crimping fitting for connecting the outer conductor and the outer conductor lead-out cable is arranged in the insulating box body; the outer conductor crimping fitting includes a peripheral crimping member and an internal crimping member, the peripheral crimping member is sleeved on the outer conductor of the coaxial cable, the internal crimping member is sleeved on the insulating layer of the coaxial cable, and the opposite walls of the peripheral crimping member and the internal crimping member compress the outer conductor; a connecting busbar for connecting the opposite outer conductors of the coaxial cable and having one end connected to the insulating box body.

[0032] Adopting a coaxial cable multi-way branching device provided by an embodiment of the present application, compared with the prior art, has the following technical effects:

[0033] First, an insulating box body is provided to install the coaxial cable, the outer conductor lead-out cable, and the inner conductor lead-out cable. An outer conductor crimping fitting is provided inside the insulating box body. The outer crimping member is sleeved on the outer conductor, and the inner crimping member is sleeved on the insulating layer of the coaxial cable. The opposite walls of the outer crimping member and the inner crimping member press the outer conductor tightly, so as to improve the connection performance and prevent the cable from deforming at the same time. The outer conductor lead-out cable is connected to the outer conductor crimping fitting to realize the lead-out of the outer conductor.

[0034] Second, the opposite outer conductors of the coaxial cable are connected through a connecting bus bar to realize the series connection of the coaxial cable.

[0035] Third, the series connection between the opposite inner conductors of the coaxial cable and the connection between the inner conductor and the inner conductor lead-out cable are realized through the inner conductor crimping fitting; thus, the connection between the coaxial cable, the outer conductor lead-out cable, the inner conductor lead-out cable, and the opposite inner and outer conductors of the coaxial cable is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0037] Figure 1 is the front view structural schematic diagram of the coaxial cable multi-way branch device provided by the embodiment of the present application;

[0038] Figure 2 is the structural schematic diagram of the inner crimping member provided by the embodiment of the present application;

[0039] Figure 3 is Figure 2 the front view structural schematic diagram of;

[0040] Figure 4 is Figure 2 the top view structural schematic diagram of;

[0041] Figure 5 is the structural schematic diagram of the outer crimping member provided by the embodiment of the present application;

[0042] Figure 6 is the structural schematic diagram of the outer crimping member provided by another embodiment of the present application;

[0043] Figure 7 is the structural schematic diagram of the first crimping terminal provided by the embodiment of the present application;

[0044] Figure 8 is the structural schematic diagram of the second crimping terminal provided by the embodiment of the present application;

[0045] Figure 9Schematic structural diagram of the connection busbar provided by the embodiment of the present application;

[0046] Figure 10 Schematic structural diagram of the insulator post provided by the embodiment of the present application.

[0047] The markings in the drawings are as follows:

[0048] Insulating box body 1, coaxial cable 2, outer conductor lead-out cable 3, inner conductor lead-out cable 4, outer conductor crimping fitting 5, connection busbar 6, inner conductor crimping fitting 7, insulator post 8, cold shrinkage terminal 9;

[0049] Peripheral crimping part 51, internal crimping part 52, first sleeve through hole 511, second mounting hole 512, third mounting hole 513, convex part 521, second sleeve through hole 522, outer edge part 523, first mounting hole 524;

[0050] U-shaped main body 61, connecting plate 62, connection mounting hole 63;

[0051] First crimping terminal 71, second crimping terminal 72, first crimping sleeve 711, first mounting plate 712, fourth mounting hole 713, second crimping sleeve 721, second mounting plate 722, fifth mounting hole 723. Detailed implementation manners

[0052] The embodiment of the present invention discloses a coaxial cable multi-way branching device to solve the problems that the existing structure cannot split and lead out the inner and outer conductors of the coaxial cable and the coaxial cable cannot be connected in series.

[0053] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further details the exemplary embodiments of the present application with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0054] Please refer to Figure 1-10 , Figure 1 Front view structural diagram of the coaxial cable multi-way branching device provided by the embodiment of the present application; Figure 2 Schematic structural diagram of the internal crimping part provided by the embodiment of the present application; Figure 3 For Figure 2 front view structural diagram; Figure 4 For Figure 2 top view structural diagram; Figure 5 Schematic structural diagram of the peripheral crimping part provided by the embodiment of the present application; Figure 6 Schematic structural diagram of the peripheral crimping part provided by another embodiment of the present application;

[0055] Figure 7 Schematic diagram of the structure of the first crimping terminal provided by the embodiment of the present application; Figure 8 Schematic diagram of the structure of the second crimping terminal provided by the embodiment of the present application; Figure 9 Schematic diagram of the structure of the connecting busbar provided by the embodiment of the present application; Figure 10 Schematic diagram of the structure of the insulator post provided by the embodiment of the present application.

[0056] In a specific embodiment, the coaxial cable 2 multi-way branching device provided by the present application includes an insulating box body 1 for installing the coaxial cable 2, the outer conductor lead-out cable 3, and the inner conductor lead-out cable 4. The coaxial cable 2 axially passes through the opposite side walls of the insulating box body 1, that is, the two ends of the coaxial cable 2 are oppositely arranged on the opposite side walls of the insulating box body 1. The outer conductor lead-out cable 3 and the inner conductor lead-out cable 4 are generally arranged perpendicular to the axial direction to form a tee joint structure, preferably the outer conductor lead-out cable 3 and the inner conductor lead-out cable 4 are respectively arranged on the top wall of the insulating box body 1. An outer conductor crimping fitting 5 and a connecting busbar 6 are respectively arranged in the insulating box body 1. The outer conductor crimping fitting 5 connects the outer conductor and the outer conductor lead-out cable 3, and the connecting busbar 6 connects the opposite outer conductors of the coaxial cable 2. It can be understood that when connecting to the outer conductor crimping fitting 5, the connecting busbar 6 or the inner conductor pressing fitting, a cold shrinkage terminal 9 needs to be respectively arranged at each cable. The cold shrinkage terminal 9 is sleeved on the inner / outer conductor insulation layer of the coaxial cable 2 and the stripped insulation layer of the inner and outer conductor lead-out cables 3 of the coaxial cable 2 to control the electric field strength and avoid creepage flashover. It relies on the prefabricated stress cone inside to equalize the field strength at the cable insulation shield break, and increase the creepage distance between the exposed cable conductor and the cable shield layer (ground). This terminal is sleeved on both the inner and outer insulation layers. The outer conductor lead-out cable 3 leads out the current of the outer conductor of the coaxial cable 2 to supply power to the next-level electrical equipment with a single-core cable; the inner conductor lead-out cable 4 leads out the current of the inner conductor of the coaxial cable 2 to supply power to the next-level electrical equipment with a single-core cable.

[0057] Among them, the insulating box body 1 can be set as a cuboid structure and has an internal hollow cavity. The coaxial cable 2 is arranged on a group of opposite side walls of the cuboid structure, and the outer conductor lead-out cable 3 and the inner conductor lead-out cable 4 are respectively arranged on the top wall.

[0058] The outer conductor crimping fitting 5 includes an outer crimping piece 51 and an inner crimping piece 52. The outer crimping piece 51 is sleeved on the outer conductor of the coaxial cable 2, and the inner crimping piece 52 is sleeved on the insulating layer of the coaxial cable 2, so that the outer conductor is expanded and propped up, which is convenient for crimping and fixing; the relative walls of the outer crimping piece 51 and the inner crimping piece 52 press the outer conductor tightly to improve its connection performance. In this embodiment, the outer crimping piece 51 is provided with a first sleeve through hole 511 for sleeved the outer conductor, the first sleeve through hole 511 extends axially and passes through the outer crimping piece 51, and the aperture of one end of the first sleeve through hole along the axial direction is gradually reduced from the outside to the inside, that is, an inclination angle is provided between the inner wall of the first sleeve through hole and the axis; accordingly, the internal crimping piece 52 has a protrusion 521 inserted into the first sleeve through hole 511, and the protrusion 521 has an insulating layer for sleeved the coaxial cable 2. The second set through hole 522 has a fixed aperture; in order to realize the insertion of the peripheral crimping part 51 and the internal crimping part 52, the protrusion 521 extends axially and the outer diameter gradually shrinks. The protrusion 521 is inserted into the first sleeve through hole, and the outer conductor is compressed by the outer wall of the protrusion 521 and the inner wall of the first sleeve through hole. By setting the above-mentioned inclined surface, the contact area between the outer conductor crimping hardware 5 and the outer conductor is increased, the connection performance is improved, and the cable is prevented from being deformed. At the same time, the outer conductor crimping hardware 5 can ensure that while realizing the connection of the outer conductor of the coaxial cable 2, a small crimping resistance is guaranteed.

[0059] Specifically, in order to achieve the fixation between the peripheral crimping part 51 and the internal crimping part 52, the internal crimping part 52 also includes an outer edge 523, which is located at the outer edge of the contour of the large diameter end of the second set through hole 522 along the axial direction, and extends radially outward along the outer edge of the contour, and the outer edge 523 has a first mounting hole 524 that penetrates the wall thickness along the axial direction; the end wall of the peripheral crimping part 51 is provided with a second mounting hole 512, the first mounting hole 524 and the second mounting hole 512 are arranged oppositely, and the threaded fasteners pass through the first mounting hole 524 and the second mounting hole 512 respectively to compress the outer conductor; and a detachable fixed connection is achieved for easy disassembly and assembly. The first mounting hole 524 is preferably 4, and the second mounting hole 512 is also set to 4, and the two are set one by one, preferably symmetrically along the axis center of the peripheral crimping part 51 (internal crimping part 52) ​​so that the outer conductor is subjected to balanced force. In other embodiments, the number of the first mounting hole 524 and the second mounting hole 512 can be set as needed; the threaded fastener can be set as a bolt.

[0060] Furthermore, if Figure 5As shown, the top and bottom of the peripheral crimping part 51 are respectively provided with third mounting holes 513; the third mounting hole 513 at the top of the peripheral crimping part 51 is fixed to the outer conductor lead-out cable 3 through a threaded fastener; the third mounting hole 513 at the bottom of the peripheral crimping part 51 is fixed to the connecting busbar 6 through a threaded fastener. In this embodiment, the peripheral crimping part 51 is arranged in a cuboid structure, and the third mounting holes 513 are respectively arranged at its top and bottom. The number of the third mounting holes 513 is preferably 4. The outer conductor lead-out cable 3 is fixed through a copper nose, the third mounting hole 513 and a threaded fastener. At the same time, the connecting busbar 6 and the outer conductor are fixed through the peripheral crimping part 51.

[0061] As Figure 9 shown, specifically, the connecting busbar 6 includes:

[0062] A U-shaped main body 61; a busbar heat shrink tube is sleeved on its horizontal part for enhanced insulation. The main insulation method with the insulating rod body is still air insulation. An insulator post 8 is arranged below the U-shaped main body 61. One end of the insulator post 8 is connected to the U-shaped main body 61, and the other end is connected to the insulating box body 1;

[0063] Connecting plates 62 are located at both ends of the opening of the U-shaped main body 61 and extend upward respectively. The connecting plates 62 are parallel to the side plates of the U-shaped main body 61 or are located in the extending direction of the side plates of the U-shaped main body 61. The connecting plates 62 have connecting mounting holes 63, and the connecting mounting holes 63 are arranged opposite to the third mounting holes 513 on the bottom wall of the peripheral crimping part 51 and are fixed by bolts.

[0064] In a preferred implementation, the insulator posts 8 are respectively located at the longitudinal two ends of the U-shaped main body 61. One end of the insulator post 8 is connected to the U-shaped main body 61, and the other end is connected to the insulating box body 1. While supporting the connecting busbar 6, the insulation between the connecting busbar 6 and the insulating box body 1 is ensured; the height of the insulator post 8 is 310 mm, and the creepage distance ≥ 700 mm, meeting the Class II pollution level (20 mm / kV).

[0065] On the basis of the above embodiments, the present application further includes an inner conductor crimping fitting 7, which connects the opposite inner conductors of the coaxial cable 2, as well as the inner conductor and the inner conductor lead-out cable 4; the inner conductor crimping fitting 7 includes:

[0066] The first crimping terminals 71, and there are 2 first crimping terminals 71, which are respectively sleeved on the opposite inner conductors of the coaxial cable 2;

[0067] The second crimping terminal 72 is sleeved on the single-core lead-out cable conductor of the inner conductor lead-out cable 4. The first crimping terminals 71 and the second crimping terminal 72 are fixed through a threaded fastener to realize the electrical connection between the cables.

[0068] Further, the first crimping terminal 71 includes:

[0069] The mutually perpendicular and fixed first crimping sleeve 711 and the first mounting plate 712. The first crimping sleeve 711 is used for sleeving with the inner conductor of the coaxial cable 2. The first mounting plate 712 is located above along the axial direction of the cable to lead out the inner conductor from above the insulating box body 1. The first mounting plate 712 has a plurality of fourth mounting holes 713 for fixing with the second crimping terminal 72.

[0070] In this embodiment, the second crimping terminal 72 includes a fixedly connected second crimping sleeve 721 and a second mounting plate 722;

[0071] The second crimping sleeve 721 is used for sleeving with the inner conductor lead-out cable 4. The axis of the second crimping sleeve 721 is arranged parallel to the second mounting plate 722; the second crimping terminal 72 is arranged perpendicular to the axial direction of the coaxial cable 2;

[0072] The second mounting plate 722 has a fifth mounting hole 723. The threaded fastener fixes the first mounting plate 712 and the second mounting plate 722 through the fourth mounting hole 713 and the fifth mounting hole 723. The number of the fourth mounting holes 713 is the same as that of the fifth mounting holes 723, and the two are fixed by bolts; thereby realizing the electrical connection between the inner conductors on the opposite sides of the coaxial cable 2 and between the inner conductor and the inner conductor lead-out cable 4.

[0073] Among them, the width of the terminal wiring part connection part of the first crimping terminal 71 and the second crimping terminal 72 on it is about 100x125.5mm, and the maximum contact area is about 12550mm 2 , considering the influence of surface roughness and connection environment, 6000mm is taken during calculation 2 As the electrical calculation cross-section of the contact surface, the calculated value will have a large margin.

[0074] In a preferred embodiment, outer conductor crimping fittings 5 are respectively provided at both ends of the coaxial cable 2. The inner and outer conductors of the above coaxial cable 2 are peeled off to expose the corresponding insulating layer and shielding layer, and then the cold shrinkage terminal 9 is used to sleeve the insulating layers of the inner and outer conductors of the coaxial cable 2. The outer conductor of the coaxial cable 2 realizes the function of the lead-out interface through the outer conductor crimping fitting 5, and then is connected to the outer conductor crimping fitting 5 on the opposite side through the connecting busbar 6, thus realizing the serial connection of the outer conductors of the coaxial cable 2 and the outer conductor lead-out function. The connecting busbar 6 is installed and fixed through the insulator post 8 and realizes the insulation function. The inner conductor of the coaxial cable 2 is sleeved with the cold shrinkage terminal 9, and its inner conductor realizes the function of connection on the opposite side and the lead-out interface through the inner conductor crimping fitting 7.

[0075] Although the preferred embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A coaxial cable multi-way branching device, characterized in that, It includes an insulating box body for installing a coaxial cable, an outer conductor lead-out cable, and an inner conductor lead-out cable; wherein, the coaxial cable axially passes through opposite side walls of the insulating box body; inside the insulating box body, there are provided: An outer conductor crimping fitting for connecting the outer conductor and the outer conductor lead-out cable; the outer conductor crimping fitting includes an outer peripheral crimping part and an inner crimping part. The outer peripheral crimping part is sleeved on the outer conductor of the coaxial cable, the inner crimping part is sleeved on the insulating layer of the coaxial cable, and the opposite side walls of the outer peripheral crimping part and the inner crimping part press the outer conductor. A connecting busbar for connecting the opposite-side outer conductors of the coaxial cable and having one end connected to the insulating box body.

2. The coaxial cable multi-pass branch device according to claim 1, characterized in that, The outer peripheral crimping part has a first sleeving through hole for sleeving the outer conductor. The first sleeving through hole extends axially and the aperture thereof gradually decreases from outside to inside along the axis. The inner crimping part has a protruding part inserted into the first sleeving through hole. The protruding part has a second sleeving through hole for sleeving the insulating layer of the coaxial cable; the protruding part extends axially and the outer diameter thereof gradually decreases. The outer conductor of the coaxial cable is pressed between the inner wall of the first sleeving through hole and the outer wall of the protruding part.

3. The coaxial cable multi-pass branch device according to claim 2, characterized in that, The inner crimping part further includes an outer edge part located at the contour outer edge of the large-diameter end of the second sleeving through hole and extending radially outward. The outer edge part has a first mounting hole axially penetrating the wall thickness. The end wall of the outer peripheral crimping part is provided with a second mounting hole opposite to the first mounting hole. Threaded fasteners respectively pass through the first mounting hole and the second mounting hole to press the outer conductor.

4. The coaxial cable multi-pass branching device according to claim 3, characterized in that, The top and bottom of the outer peripheral crimping part are respectively provided with third mounting holes. The third mounting hole at the top of the outer peripheral crimping part is fixed to the outer conductor lead-out cable through a threaded fastener. The third mounting hole at the bottom of the outer peripheral crimping part is fixed to the connecting busbar through a threaded fastener.

5. The coaxial cable multi-pass branch device according to claim 1, characterized in that, It further includes an inner conductor crimping fitting for connecting the opposite-side inner conductors of the coaxial cable, as well as the inner conductor and the inner conductor lead-out cable. The inner conductor crimping fitting includes: First crimping terminals respectively sleeved on the opposite-side inner conductors of the coaxial cable. Second crimping terminals sleeved on the inner conductor lead-out cable. The first crimping terminals and the second crimping terminals are fixed through threaded fasteners.

6. The coaxial cable multi-pass branch device according to claim 5, characterized in that, The first crimping terminals include: A first crimping sleeve and a first mounting plate that are perpendicular to each other and fixed. The first crimping sleeve is used for sleeving the inner conductor of the coaxial cable, and the first mounting plate has a plurality of fourth mounting holes for fixing to the second crimping terminals.

7. The coaxial cable multi-pass branch device according to claim 6, characterized in that, The second crimping terminals include a second crimping sleeve and a second mounting plate that are fixedly connected. The second crimping sleeve is used for sleeving the inner conductor lead-out cable, and the axis of the second crimping sleeve is parallel to the second mounting plate. The second mounting plate has a fifth mounting hole. Threaded fasteners fix the first mounting plate and the second mounting plate through the fourth mounting holes and the fifth mounting hole.

8. The coaxial cable multi-pass branch device according to claim 4, characterized in that, The connecting busbar includes: A U-shaped main body. The connecting plates are located at both ends of the opening of the U-shaped body and extend upward respectively. The connecting plates are provided with connecting mounting holes, and the connecting mounting holes are arranged opposite to the third mounting holes on the bottom wall of the peripheral crimping member.

9. The coaxial cable multi-pass branch device according to claim 4, characterized in that, It further includes: Insulator posts are respectively located at both longitudinal ends of the U-shaped body. One end of the insulator post is connected to the U-shaped body, and the other end is connected to the insulating box body.

10. The coaxial cable multi-pass branch device according to claim 9, characterized in that, It further includes: Cold shrinkage terminals are respectively sleeved and fixed on the insulating layers of the outer conductor of the coaxial cable, the insulating layer of the inner conductor, the insulating layer of the outer conductor lead-out cable, and the insulating layer of the inner conductor lead-out cable.

Images