Intermediate connection device and method for insulated tubular busbars in railway traction power supply systems

Abstract

An intermediate connection device and method for an insulated tubular busbar of a railway traction power supply system, comprising an intermediate connection device body having a first busbar (1) and a second busbar (2), and a joint device arranged between the first busbar (1) and the second busbar (2) and used to achieve a detachable connection between the first busbar (1) and the second busbar (2); the intermediate connection device body is used to achieve a butt connection of the insulated tubular busbar; the joint device is used to achieve a butt state initialization of the insulated tubular busbar; and the busbar no longer needs to be sawed off when it is removed, thereby meeting the requirement for rapid replacement of the insulated tubular busbar used in the railway traction power supply system.

Description

Technical Field

[0001] The invention relates to an intermediate connection device, in particular to an intermediate connection device and method for an insulating tubular busbar of a railway traction power supply system. Background Art

[0002] The insulated tubular busbar of the railway traction power supply system is an insulated tubular busbar used in the railway traction power supply system, in order to meet the connection between the insulated tubular busbars. Therefore, the intermediate connection device and method for the insulated tubular busbar of the railway traction power supply system is an important cable accessory. In the existing intermediate connection device and method for the insulated tubular busbar of the railway traction power supply system, the intermediate connection stainless steel lining core is an integral structure. Since it cannot be disassembled, it needs to be sawed off when the busbar is removed, but it cannot be done during installation. If installation is to be achieved, all busbars must be removed and reconnected, which is a large workload and greatly reduces the replacement efficiency. It cannot meet the requirements for rapid replacement of the insulated tubular busbar used in the railway traction power supply system. Summary of the invention

[0003] The object of the present invention is an intermediate connection device for an insulated tubular busbar of a railway traction power supply system.

[0004] The object of the present invention is an intermediate connection method for an insulated tubular busbar of a railway traction power supply system.

[0005] In order to overcome the above technical shortcomings, the purpose of the present invention is to provide an intermediate connection device and method for an insulated tubular busbar of a railway traction power supply system, thereby meeting the requirement for rapid replacement of the insulated tubular busbar used in the railway traction power supply system.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it includes an intermediate connecting device body having a first busbar and a second busbar, and a connector device arranged between the first busbar and the second busbar and used to realize a detachable connection between the first busbar and the second busbar.

[0007] Due to the design of the intermediate connecting device body and the joint device, the butt connection of the insulated tubular busbar is realized through the intermediate connecting device body, and the butt state of the insulated tubular busbar is initialized through the joint device. It is no longer necessary to saw off the busbar when dismantling it, thereby meeting the requirement for rapid replacement of the insulated tubular busbar used in the railway traction power supply system.

[0008] The present invention is designed to connect the intermediate connection device body and the joint device to each other in a manner of initializing the docking state of the insulating tubular busbar.

[0009] The present invention is designed to connect the joint device with the intermediate connecting device body in a sliding connection manner.

[0010] The present invention is designed that the intermediate connection device body also includes an inner shielding tube, a protective sleeve, a joint insulation layer, a joint stress cone and an outer shielding layer or an inner shielding tube, a joint insulation layer, a joint stress cone, a first cold shrink terminal and a second cold shrink terminal or a joint insulation layer, a joint stress cone, a tail tube, a cone support and a wiring terminal.

[0011] The present invention provides that the joint device is configured to include a first joint and a second joint or a first joint tube, a second joint tube and a butt electrode.

[0012] The present invention is designed to further include a first accessory device, and the first accessory device is arranged between the intermediate connection device body and the joint device, and the first accessory device is arranged as a pin shaft.

[0013] The present invention is designed to further include a second accessory device and the second accessory device is arranged between the intermediate connection device body and the joint device. The second accessory device is arranged to include a spring contact finger, an inner sheath and an outer sheath.

[0014] The present invention is designed to further include a third accessory device, and the third accessory device is arranged between the intermediate connecting device body and the joint device, and the third accessory device is arranged to include a strap contact finger and a wrapping layer.

[0015] The present invention is designed to further include a fourth accessory device, and the fourth accessory device is arranged between the intermediate connecting device body and the joint device, and the third accessory device is arranged as a ferrule.

[0016] The present invention is designed to respectively arrange pin shafts between the first busbar and the first joint and between the second busbar and the second joint, to arrange an inner sheath between the first busbar, the second busbar and the first joint, and to respectively arrange spring contacts between the inner sheath and the first busbar and between the inner sheath and the second busbar, to respectively arrange an outer sheath between the first busbar, the second busbar and the inner sheath, and to respectively arrange an inner shielding tube between the first busbar, the second busbar and the outer sheath, to respectively arrange outer shielding layers on the first busbar and the second busbar, and to respectively arrange a joint insulating layer between the first busbar, the second busbar and the inner shielding tube, to respectively arrange a protective cover between the outer shielding layer and the joint insulating layer, and to respectively arrange a joint stress cone between the joint insulating layer and the first busbar and between the joint insulating layer and the second busbar.

[0017] The present invention is designed that the copper tube end of the first busbar is arranged to be connected to the first joint through a pin shaft, and the copper tube end of the second busbar is arranged to be connected to the second joint through a pin shaft, the outer side surface of the copper tube of the first busbar and the outer side surface of the copper tube of the second busbar are respectively arranged to be connected to the spring contact finger and the inner sheath, and the insulating layer end of the first busbar and the insulating layer end of the second busbar are respectively arranged to be connected to the inner sheath and the outer sheath, the outer side surface of the insulating layer of the first busbar and the insulating layer of the second busbar are respectively arranged to be connected to the inner shielding tube, the joint insulating layer, the joint stress cone and the outer shielding layer, and pin shaft holes are respectively arranged on the copper tube end of the first busbar and the copper tube end of the second busbar, and the pin shaft hole body of the first busbar and the pin shaft hole body of the second busbar are respectively arranged to be connected to the pin shaft.

[0018] The present invention is designed that the first joint is configured to include a first column portion and a disk portion, and the outer end head of the first column portion is configured to be connected to the inner end face portion of the disk portion, an inclusive groove body is provided on the outer end face portion of the disk portion, and a first blind hole body is provided on the inner end head of the first column portion, a pin shaft hole body is provided on the side wall of the first blind hole body, and the pin shaft hole body of the first blind hole body is configured to be connected to the pin shaft, the outer side face portion of the first column portion is configured to be connected to the inner wall of the copper tube of the first busbar, and the inner end face portion of the disk portion is configured to be connected to the copper tube end head of the first busbar, the outer end face portion of the disk portion is configured to be connected to the copper tube end head of the second busbar, and the outer side face portion of the disk portion is configured to be connected to the inner sheath, the inclusive groove body is configured to be connected to the second joint, and the first column portion and the disk portion are respectively configured to be circular rod-shaped bodies, the inclusive groove body is configured to be a dovetail groove-shaped body, and the first blind hole body is configured to be a circular hole-shaped body.

[0019] The present invention is designed that the second joint is configured to include a second column portion and a rail block portion, and the outer end surface portion of the second column portion is configured to be connected to the rail block portion, a second blind hole body is provided at the inner end of the second column portion and a pin hole body is provided on the side wall of the second blind hole body, the pin hole body of the second blind hole body is configured to be connected to the pin and the rail block portion is configured to be connected to the first joint, the outer side surface portion of the second column portion is configured to be connected to the inner wall of the copper tube of the second busbar and the second column portion is configured to be a circular rod-shaped body, the rail block portion is configured to be a dovetail block body and the second blind hole body is a circular hole-shaped body.

[0020] The present invention designs that the pin is configured as a circular rod-shaped body and the pin is respectively configured to be serially connected to the first busbar, the second busbar, the first joint and the second joint, and the pin is respectively configured to be arranged and distributed at intervals along the circumference of the first busbar and the circumference of the second busbar.

[0021] The present invention provides that the spring contact fingers are arranged to be embeddedly connected with the inner sheath and the spring contact fingers are arranged to be sleeve-connected with the copper tube of the first busbar and the copper tube of the second busbar respectively.

[0022] The present invention is designed that the inner sheath is configured as a cylindrical body composed of two arc plates and a groove body is configured on the inner wall of the arc plate, the inner wall of the arc plate is respectively configured to be connected to the copper tube of the first busbar, the copper tube of the second busbar and the first joint and the outer side surface of the arc plate is configured to be connected to the outer sheath, one of the end surface portions of the arc plate is configured to be connected to the insulating layer body of the first busbar and the other end surface portion of the arc plate is configured to be connected to the insulating layer body of the second busbar, the groove body is configured to be connected to the spring contact finger and the arc plates are respectively configured to be a part of the copper tubular body, the groove body is configured to be a U-shaped open groove body and the groove body is configured to be arranged and distributed at intervals along the transverse center line of the arc plate.

[0023] The present invention is designed that the outer sheath is configured as a stainless steel tubular body with a transverse slit and the inner wall of the outer sheath is configured to be connected to the inner sheath, the outer side surface of the outer sheath is configured to be connected to the inner shielding tube and one of the end surfaces of the outer sheath is configured to be connected to the insulating layer body of the first busbar, and the other end surface of the outer sheath is configured to be connected to the insulating layer body of the second busbar.

[0024] The present invention is designed that the inner shielding tube is configured as a shielding sleeve woven with polyester multifilaments and the middle part of the inner wall of the inner shielding tube is configured to be connected to the outer sheath, one end surface part of the inner wall of the inner shielding tube is configured to be connected to the first busbar and the other end surface part of the inner wall of the inner shielding tube is configured to be connected to the second busbar, and the outer surface part of the inner shielding tube is configured to be connected to the joint insulation layer.

[0025] The present invention is designed that the joint insulation layer is set as an insulating sleeve and the middle part of the inner wall of the joint insulation layer is set to be connected to the inner shielding tube, the inner wall end surface parts of the joint insulation layer are respectively set to be connected to the joint stress cone and the outer shielding layer, and the outer side surface part of the joint insulation layer is set to be connected to the protective sleeve.

[0026] The present invention is designed that the joint stress cone is set as a cable joint stress cone and the joint stress cone is respectively set to be clamped and connected with the joint insulation layer and the first busbar, the joint insulation layer and the second busbar, the outer side surface of the joint stress cone is set to be connected with the joint insulation layer and the outer end surface of the joint stress cone is respectively set to be connected with the first busbar and the second busbar.

[0027] The present invention designs that the outer shielding layer is set as a copper tape shielding layer and the outer shielding layer is respectively set to be woundly connected with the insulating layer body of the first busbar and the insulating layer body of the second busbar, and the outer shielding layer is set to be connected with the protective sleeve.

[0028] The present invention designs that the protective sleeve is arranged as a heat shrinkable sleeve, the middle part of the inner wall of the protective sleeve is arranged to be connected with the joint insulating layer, and the end surface part of the inner wall of the protective sleeve is arranged to be connected with the outer shielding layer.

[0029] The present invention is designed that the first busbar and the second busbar and the first joint and the second joint are arranged to be distributed in a sliding docking manner, and the first busbar, the second busbar, the first joint and the second joint and the pin shaft are arranged to be distributed in a nailing connection manner, the first busbar, the second busbar, the first joint and the second joint and the spring contact finger, the inner sheath, the inner shielding tube, the protective sleeve, the joint insulation layer, the joint stress cone and the outer shielding layer are arranged to be distributed in an outer sheath fixed manner, and the first busbar, the second busbar, the first joint, the second joint, the spring contact finger, the inner sheath, the inner shielding tube, the protective sleeve, the joint insulation layer, the joint stress cone and the outer shielding layer and the outer sheath are arranged to be distributed in a tube fixed manner, the center line of the first busbar, the center line of the second busbar, the center line of the first joint, the center line of the second joint, the center line of the spring contact finger, the center line of the outer sheath, the center line of the inner shielding tube, the center line of the protective sleeve and the center line of the joint insulation layer are arranged on the same straight line, and the track block portion is arranged to be connected to the containing groove body.

[0030] The present invention is designed to respectively arrange pin shafts between the first busbar and the first joint and between the second busbar and the second joint, to arrange an inner sheath between the first busbar, the second busbar and the first joint, and to respectively arrange spring contacts between the inner sheath and the first busbar and between the inner sheath and the second busbar, to arrange an outer sheath between the first busbar, the second busbar and the inner sheath, and to arrange an inner shielding tube between the first busbar, the second busbar and the outer sheath, to arrange a first cold shrink terminal on the first busbar and a second cold shrink terminal on the second busbar, to arrange a joint insulating layer between the first busbar and the first cold shrink terminal and the second busbar and the second cold shrink terminal, and to respectively arrange joint stress cones between the first cold shrink terminal and the first busbar and between the second cold shrink terminal and the second busbar.

[0031] The present invention is designed that the joint insulation layer is configured as an insulating sleeve and the middle part of the inner wall of the joint insulation layer is configured to be connected to the inner shielding tube, one end surface part of the inner wall of the joint insulation layer is configured to be connected to the first cold shrink terminal and the other end surface part of the inner wall of the joint insulation layer is configured to be connected to the second cold shrink terminal.

[0032] The present invention is designed that the joint stress cone is set as a cable joint stress cone and the joint stress cone is respectively set to be clamped and connected to the first cold shrink terminal and the first busbar, the second cold shrink terminal and the second busbar, wherein the outer side surface of one joint stress cone is set to be connected to the first cold shrink terminal and the outer end surface of one joint stress cone is set to be connected to the first busbar, wherein the outer side surface of another joint stress cone is set to be connected to the second cold shrink terminal and the outer end surface of another joint stress cone is set to be connected to the second busbar.

[0033] The present invention is designed that the first cold shrink terminal and the second cold shrink terminal are respectively arranged as cold shrink cable terminal heads and the first cold shrink terminal is arranged to be connected to the first busbar in a sleeve-type connection, and the second cold shrink terminal is arranged to be connected to the second busbar in a sleeve-type connection, the outer side surface of the inner end of the first cold shrink terminal and the outer side surface of the inner end of the second cold shrink terminal are respectively arranged to be connected to the joint insulation layer, and the outer end inner wall of the first cold shrink terminal and the outer end inner wall of the second cold shrink terminal are respectively arranged to be connected to the joint stress cone.

[0034] The present invention is designed that a first joint tube and a joint stress cone are respectively arranged on the first busbar, a second joint tube and a joint stress cone are respectively arranged on the second busbar, and a strap contact finger is respectively arranged between the first joint tube and the first busbar and between the second joint tube and the second busbar, the first joint tube and the second joint tube are respectively arranged in the docking electrode, and a ferrule is respectively arranged between the first joint tube and the joint stress cone and between the second joint tube and the joint stress cone, a wrapping layer is arranged between the docking electrode and the joint stress cone, and a joint insulating layer is arranged on the wrapping layer, a tail pipe is respectively arranged between the first busbar and the joint insulating layer and the wrapping layer, and between the second busbar and the joint insulating layer and the wrapping layer, and a cone support is arranged between the tail pipe and the joint stress cone, and a connecting terminal is arranged on the tail pipe.

[0035] The present invention is designed that the first joint tube and the second joint tube are respectively arranged to be a cone with an intermediate through hole body, and the outer side surface portion of the first joint tube and the outer side surface portion of the second joint tube are respectively arranged to be contact-connected with the docking electrode, the outer end surface portion of the first joint tube and the outer end surface portion of the second joint tube are respectively arranged to be contact-connected with the ring, and the intermediate through hole body of the first joint tube is respectively arranged to be connected with the copper tube end and the strap contact finger of the first busbar, and the intermediate through hole body of the second joint tube is respectively arranged to be connected with the copper tube end and the strap contact finger of the second busbar.

[0036] The present invention designs that the outer side surfaces of the watchband contact fingers are respectively arranged to be connected to the first connector tube and the second connector tube, and the inner side surfaces of the watchband contact fingers are respectively arranged to be connected to the first busbar and the second busbar.

[0037] The present invention designs that the butt-jointed electrode is configured to include a barrel, a first end ear and a second end ear, and a first inclusive hole is provided at one of the ports of the barrel, a second inclusive hole is provided at another port of the barrel, and the outer port of the first inclusive hole is configured to be connected to the first end ear, the outer port of the second inclusive hole is configured to be connected to the second end ear, the first inclusive hole is configured to be connected to the first joint barrel and the second inclusive hole is configured to be connected to the second joint barrel, the first end ear and the second end ear are respectively configured to be connected to the ferrule and the wrapping layer and the barrel, the first end ear and the second end ear are respectively configured to be embeddedly connected to the wrapping layer, the barrel is configured to be a columnar body and the first end ear and the second end ear are respectively configured to be circular tubular bodies, and the first inclusive hole and the second inclusive hole are respectively configured to be conical holes.

[0038] The present invention designs that the bevel angles of the first joint tube, the second joint tube, the first containing hole body and the second containing hole body are set to 38-65 degrees.

[0039] The present invention is designed that the ferrule is configured as a copper annular body and the ferrule is respectively configured to be sleeve-connected with the copper tube end of the first busbar and the copper tube end of the second busbar, the inner end surface portion of the ferrule is respectively configured to be connected with the first joint tube, the second joint tube and the docking electrode, and the outer end surface portion of the ferrule is respectively configured to be connected with the joint stress cone.

[0040] The present invention is designed that the wrapping layer is configured as an insulating resin cylindrical body with a middle through hole body, and the middle part of the middle through hole body of the wrapping layer is configured to be connected to the docking electrode and the ring in a sleeve-type connection, the end part of the middle through hole body of the wrapping layer is configured to be connected to the joint stress cone in a sleeve-type connection, and the outer side surface part of the wrapping layer is configured to be connected to the joint insulating layer, and the end part of the wrapping layer is configured to be connected to the tail pipe.

[0041] The present invention designs that the tail tube is configured as a cable joint tail tube and the inner end of the tail tube is respectively configured to be connected to the joint insulation layer and the wrapping layer, the outer end of the tail tube is respectively configured to be connected to the first busbar and the second busbar, and the inner wall of the tail tube is configured to be connected to the cone support.

[0042] The present invention designs that the joint insulation layer is arranged as an insulation sleeve, the inner wall of the joint insulation layer is arranged to be connected with the wrapping layer, and the end surface portion of the joint insulation layer is arranged to be connected with the tail pipe.

[0043] The present invention is designed that the joint stress cone is set as a cable joint stress cone and the joint stress cone is respectively set to be clamped and connected with the wrapping layer and the first busbar, the wrapping layer and the second busbar, the outer end surface portion of the joint stress cone is set to be connected with the cone support and the inner end surface portion of the joint stress cone is set to be connected with the ring.

[0044] The present invention designs that the cone support is configured as a wedge block and is configured to be clamped and connected to the joint stress cone and the tail pipe, and the inner end surface portion of the cone support is configured to be connected to a thrust screw located on the tail pipe.

[0045] The present invention provides that the connecting terminal is arranged to be connected with the tail pipe.

[0046] The present invention designs an intermediate connection method for an insulated tubular busbar of a railway traction power supply system, the steps of which are: the intermediate connection device body realizes the butt connection of the insulated tubular busbar, and the joint device realizes the initialization of the butt state of the insulated tubular busbar.

[0047] The present invention is designed, and its steps are: when the first busbar and the second busbar are butt-jointed, the copper tube of the first busbar and the copper tube of the second busbar are peeled off to expose the copper tube of the first busbar and the copper tube of the second busbar, holes are drilled on the copper tube of the first busbar and the copper tube of the second busbar to form pin holes, the first column is installed in the copper tube of the first busbar, the pin is installed in the pin hole of the copper tube of the first busbar and the pin hole of the first blind hole, so that the first joint is installed in the copper tube of the first busbar, the second column is installed in the copper tube of the second busbar, the pin is installed in the pin hole of the copper tube of the second busbar and the pin hole of the second blind hole, so that the second joint is installed in the copper tube of the second busbar, the outer shielding layer is respectively wound on the insulating layer of the first busbar and the insulating layer of the second busbar, the spring contact finger, the outer sheath, the inner shielding tube, the joint insulation layer and the protective sleeve are sheathed on the first busbar, the rail block part is connected to the containing groove body, the spring contact finger is Place them on the copper tube of the first busbar and the copper tube of the second busbar respectively, close the two arc plates on the copper tube of the first busbar and the copper tube of the second busbar, put the spring contact finger into the groove body, put the outer sheath on the two arc plates, put the inner shielding tube on the outer sheath, the insulating layer body of the first busbar and the insulating layer body of the second busbar, put the joint insulating layer on the inner shielding tube, the insulating layer body of the first busbar and the insulating layer body of the second busbar, install the joint stress cone between the joint insulating layer and the outer shielding layer, put the protective sleeve on the joint insulating layer and the outer shielding layer, so as to complete the docking of the first busbar and the second busbar. When replacing the first busbar and the second busbar, take out the protective sleeve from the joint insulating layer, take out the joint insulating layer from the inner shielding tube, take out the joint stress cone, take out the outer sheath from the inner sheath, separate the two arc plates from the copper tube of the first busbar and the copper tube of the second busbar, slide the track block part out of the containing groove body, so as to complete the separation of the first busbar and the second busbar.

[0048] The present invention is designed, and its steps are: put the first cold shrink terminal on the first busbar, put the second cold shrink terminal on the second busbar, after the first joint, the second joint, the pin shaft, the spring contact finger, the inner sheath, the outer sheath and the inner shielding tube are respectively installed on the first busbar and the second busbar, put the joint insulation layer on the inner shielding tube, the first cold shrink terminal and the second cold shrink terminal, and install the joint stress cone between the first cold shrink terminal and the first busbar and between the second cold shrink terminal and the second busbar respectively, so as to complete the docking of the first busbar and the second busbar, when the first busbar and the second busbar are replaced, take out the joint stress cone and take out the joint insulation layer from the inner shielding tube.

[0049] The present invention is designed, and the steps are: respectively sleeve the tail pipe, the joint stress cone, the ferrule and the strap contact finger on the first busbar and the second busbar, install the first joint tube on the first busbar and the strap contact finger, install the second joint tube on the first busbar and the second busbar, sleeve the joint insulation layer on the wrapping layer, sleeve the wrapping layer on the docking electrode, install the first joint tube on the first containing hole body, install the second joint tube on the second containing hole body, connect the tail pipe with the wrapping layer and the joint insulation layer, and flange the outer end of the tail pipe upward to move the joint stress cone inward. , put the cone support between the joint stress cone and the tail pipe, install the cone support between the joint stress cone and the tail pipe through the thrust screw located on the tail pipe, then restore the outer end of the tail pipe to its original state, connect the wire of the terminal block to the ground, thereby completing the docking of the first busbar and the second busbar. When replacing the first busbar and the second busbar, flange the outer end of the tail pipe upwards, remove the cone support from between the joint stress cone and the tail pipe through the thrust screw located on the tail pipe, remove the first joint tube from the first containing hole body, and remove the second joint tube from the second containing hole body.

[0050] The technical effect of the present invention is that it comprises a wedge-shaped groove stainless steel lining core for the inside of two copper tubes, a copper sleeve and a spring contact finger for ensuring the current-carrying capacity and conductive connection of the two busbars, and a stainless steel sleeve for fixing the copper sleeve. The wedge-shaped groove stainless steel lining core is divided into a wedge-shaped groove male and a wedge-shaped groove female. The total thickness of the male and female wedge-shaped grooves is 10-20mm, and the length of the groove is 30-50mm. The stainless steel lining core structure is hollow, with a front end blocking structure, a total length of 80-150mm, and an inner diameter of 30-80mm. The male and female wedge-shaped groove stainless steel lining core can only be translated forward and backward, and cannot be translated horizontally under the action of the wedge-shaped groove, thereby solving the problems of how to quickly disassemble and replace the intermediate connecting hardware and the busbar after the cold shrink intermediate joint of the insulating tubular busbar is punctured, and how to seal and waterproof the intermediate connecting part. The intermediate connection hardware includes a wedge-shaped groove stainless steel lining core, which is stuck in the horizontal direction by the wedge-shaped groove, does not translate or move, and ensures the mechanical strength of the copper tube. When disassembling and assembling, the two busbars can be quickly separated by translating forward and backward. The stainless steel lining core is sealed in the middle, which is not easy to get water or moisture, and ensures the sealing of the intermediate connection part; it also includes a copper sleeve, a spring contact finger, a positioning pin and a stainless steel sleeve, which ensures that the busbar conductive current carrying capacity is sufficient, and also includes a cold shrink insulation tube for connecting the tubular busbars. The joints of the two tubular busbar ends are inserted into the cold shrink insulation tube, and the two insulated tubular busbar ends are partially inserted into two cold shrink terminals to control the electric field of the two busbar ends. The fully insulated tubular busbar open-type insulated intermediate connection method provided by the present application has the advantages of reliable electrical performance, good insulation performance, uniform control of the electric field through the cold shrink terminal and weakening of the role of the intermediate joint, and simple and convenient installation and disassembly.

[0051] In the present technical scheme, the intermediate connection device body and the joint device for initializing the docking state of the insulated tubular busbar are important technical features. In the technical field of intermediate connection devices and methods for insulated tubular busbars in railway traction power supply systems, it has novelty, creativity and practicality. The terms in the present technical scheme can be explained and understood using patent documents in this technical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 is a schematic diagram of one of the first embodiments of the present invention,

[0054] Figure 2 is a schematic diagram of the structure of the spring contact finger 6,

[0055] Figure 3 is a schematic diagram of the structure of the first joint 3,

[0056] Figure 4 is a schematic diagram of the structure of the second joint 4,

[0057] Figure 5 is a schematic diagram of the structure of the arc plate 71,

[0058] Figure 6 for Figure 5 Right view of

[0059] Figure 7 is a schematic diagram of the structure of the outer sheath 8,

[0060] Figure 8 is a schematic diagram of the second embodiment of the present invention,

[0061] Fig. 9 is a schematic diagram of the third embodiment of the present invention,

[0062] First busbar-1, second busbar-2, first joint-3, second joint-4, pin-5, spring contact finger-6, inner sheath-7, outer sheath-8, inner shielding tube-9, protective sleeve-91, joint insulation layer-92, joint stress cone-93, outer shielding layer-94, first cold shrink terminal-98, second cold shrink terminal-99, first joint tube-10, second joint tube-20, strap contact finger-30, docking electrode-40, ferrule -50, wrapping layer-60, tail pipe-70, cone support-80, terminal block-90, first column portion-31, disc portion-32, containing groove body-33, first blind hole body-34, second column portion-41, rail block portion-42, second blind hole body-43, arc plate-71, groove body-72, cylinder portion-401, first end ear portion-402, second end ear portion-403, first containing hole body-404, second containing hole body-405. DETAILED DESCRIPTION

[0063] According to the Examination Guidelines, terms such as “having”, “including” and “comprising” used in the present invention should be understood as not dispensing with the existence or addition of one or more other elements or combinations thereof.

[0064] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following examples are commercially available. If the processing conditions are not clearly stated, please refer to the purchased product manual or proceed according to conventional methods in the art.

[0067] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] An intermediate connection device for an insulated tubular busbar in a railway traction power supply system, Figure 1This is one of the first embodiments of the present invention, and this embodiment is specifically described in conjunction with the accompanying drawings. It includes a first busbar 1, a second busbar 2, a first joint 3, a second joint 4, a pin 5, a spring contact finger 6, an inner sheath 7, an outer sheath 8, an inner shielding tube 9, a protective sheath 91, a joint insulating layer 92, a joint stress cone 93 and an outer shielding layer 94, and a pin 5 is respectively arranged between the first busbar 1 and the first joint 3, and between the second busbar 2 and the second joint 4, and an inner sheath 7 is arranged between the first busbar 1, the second busbar 2 and the first joint 3, and between the inner sheath 7 and the first busbar 1, and between the inner sheath 7 and the second busbar 1. 2, spring contact fingers 6 are respectively arranged between the first busbar 1, the second busbar 2 and the inner sheath 7, an outer sheath 8 is arranged between the first busbar 1, the second busbar 2 and the outer sheath 8, an inner shielding tube 9 is arranged between the first busbar 1, the second busbar 2 and the outer sheath 8, outer shielding layers 94 are respectively arranged on the first busbar 1 and the second busbar 2, and a joint insulating layer 92 is arranged between the first busbar 1, the second busbar 2 and the inner shielding tube 9, a protective cover 91 is arranged between the outer shielding layer 94 and the joint insulating layer 92, and joint stress cones 93 are respectively arranged between the joint insulating layer 92 and the first busbar 1, and between the joint insulating layer 92 and the second busbar 2.

[0069] In this embodiment, the copper tube end of the first busbar 1 is configured to be connected to the first joint 3 through a pin 5 and the copper tube end of the second busbar 2 is configured to be connected to the second joint 4 through a pin 5, the outer side surface of the copper tube of the first busbar 1 and the outer side surface of the copper tube of the second busbar 2 are respectively configured to be connected to the spring contact finger 6 and the inner sheath 7, and the insulation layer end of the first busbar 1 and the insulation layer end of the second busbar 2 are respectively configured to be connected to the inner sheath 7 and the outer sheath 8, the outer side surface of the insulation layer of the first busbar 1 and the outer side surface of the insulation layer of the second busbar 2 are respectively configured to be connected to the inner shielding tube 9, the joint insulation layer 92, the joint stress cone 93 and the outer shielding layer 94, and pin holes are respectively provided on the copper tube ends of the first busbar 1 and the copper tube ends of the second busbar 2, and the pin holes of the first busbar 1 and the second busbar 2 are respectively configured to be connected to the pin 5.

[0070] Through the first busbar 1 and the second busbar 2, supporting connection points for the first joint 3, the second joint 4, the pin shaft 5, the spring contact finger 6, the inner sheath 7, the outer sheath 8, the inner shielding tube 9, the joint insulation layer 92, the joint stress cone 93 and the outer shielding layer 94 are formed. The guide rail 11, the rotary motor 13 and the drill rod clamp 14 realize the connection with the first joint 3, the connection with the second joint 4, the connection with the pin shaft 5, the connection with the spring contact finger 6, the connection with the inner sheath 7, the connection with the outer sheath 8, the connection with the inner shielding tube 9, the connection with the joint insulation layer 92, the connection with the joint stress cone 93, and the connection with the outer shielding layer 94. The technical purpose is to be used as a component for connecting to a railway traction power supply system.

[0071] In the present embodiment, the first joint 3 is configured to include a first column portion 31 and a disk portion 32, and the outer end of the first column portion 31 is configured to be connected to the inner end surface portion of the disk portion 32, an inclusive groove body 33 is provided on the outer end surface portion of the disk portion 32, and a first blind hole body 34 is provided on the inner end of the first column portion 31, a pin hole body is provided on the side wall of the first blind hole body 34, and the pin hole body of the first blind hole body 34 is configured to be connected to the pin 5, the outer side surface portion of the first column portion 31 is configured to be connected to the inner wall of the copper tube of the first busbar 1 and the inner end surface portion of the disk portion 32 is configured to be connected to the copper tube end of the first busbar 1, the outer end surface portion of the disk portion 32 is configured to be connected to the copper tube end of the second busbar 2 and the outer side surface portion of the disk portion 32 is configured to be connected to the inner sheath 7, the inclusive groove body 33 is configured to be connected to the second joint 4, and the first column portion 31 and the disk portion 32 are respectively configured as circular rod-shaped bodies, the inclusive groove body 33 is configured as a dovetail groove body, and the first blind hole body 34 is configured as a circular hole body.

[0072] Through the first joint 3, a supporting connection point for the first busbar 1, the second busbar 2, the second joint 4, the pin 5 and the inner sheath 7 is formed; the first column portion 31 and the disk portion 32 realize the connection with the first busbar 1; the disk portion 32 realizes the connection with the second busbar 2; the connection with the inner sheath 7 is realized; the containing groove body 33 realizes the connection with the second joint 4; the first column portion 31 and the first blind hole body 34 realize the connection with the pin 5. Its technical purpose is to be used as an external connection component with the first busbar 1.

[0073] In this embodiment, the second joint 4 is configured to include a second column portion 41 and a rail block portion 42, and the outer end surface portion of the second column portion 41 is configured to be connected to the rail block portion 42, a second blind hole body 43 is provided at the inner end of the second column portion 41, and a pin hole body is provided on the side wall of the second blind hole body 43, the pin hole body of the second blind hole body 43 is configured to be connected to the pin 5 and the rail block portion 42 is configured to be connected to the first joint 3, the outer side surface portion of the second column portion 41 is configured to be connected to the inner wall of the copper tube of the second busbar 2 and the second column portion 41 is configured to be a circular rod-shaped body, the rail block portion 42 is configured to be a dovetail block-shaped body and the second blind hole body 43 is a circular hole-shaped body.

[0074] Through the second joint 4, a supporting connection point for the second busbar 2, the first joint 3, the pin 5 and the inner sheath 7 is formed. The second column part 41 realizes the connection with the second busbar 2, the rail block part 42 realizes the connection with the first joint 3, and the second blind hole body 43 realizes the connection with the pin 5. Its technical purpose is to be used as an external connection component with the second busbar 2.

[0075] In this embodiment, the pin 5 is configured as a circular rod-shaped body and the pin 5 is respectively configured to be connected in series with the first busbar 1, the second busbar 2, the first joint 3 and the second joint 4, and the pin 5 is respectively configured to be arranged and distributed at intervals along the circumference of the first busbar 1 and the circumference of the second busbar 2.

[0076] The pin shaft 5 forms supporting connection points for the first busbar 1, the second busbar 2, the first joint 3 and the second joint 4. The pin shaft 5 realizes connection with the first busbar 1, connection with the second busbar 2, connection with the first joint 3 and connection with the second joint 4. Its technical purpose is to serve as a component for connecting the first busbar 1 and the first joint 3, and between the second busbar 2 and the second joint 4.

[0077] In this embodiment, the spring contact fingers 6 are configured to be embeddedly connected with the inner sheath 7 and the spring contact fingers 6 are configured to be socket-connected with the copper tube of the first busbar 1 and the copper tube of the second busbar 2 .

[0078] The spring contact fingers 6 form support connection points for the first busbar 1, the second busbar 2 and the inner sheath 7. The spring contact fingers 6 realize connection with the first busbar 1, the second busbar 2 and the inner sheath 7. The technical purpose is to serve as a component for connecting the first busbar 1 and the inner sheath 7, and the second busbar 2 and the inner sheath 7.

[0079] In this embodiment, the inner sheath 7 is configured as a cylindrical body composed of two arc plates 71 and a groove body 72 is configured on the inner wall of the arc plate 71, the inner wall of the arc plate 71 is respectively configured to be connected to the copper tube of the first busbar 1, the copper tube of the second busbar 2 and the first joint 3 and the outer side surface of the arc plate 71 is configured to be connected to the outer sheath 8, one of the end surface portions of the arc plate 71 is configured to be connected to the insulating layer body of the first busbar 1 and the other end surface portion of the arc plate 71 is configured to be connected to the insulating layer body of the second busbar 2, the groove body 72 is configured to be connected to the spring contact 6 and the arc plates 71 are respectively configured to be a part of the copper tubular body, the groove body 72 is configured to be a U-shaped open groove body and the groove body 72 is configured to be arranged and distributed at intervals along the transverse center line of the arc plate 71.

[0080] Through the inner sheath 7, supporting connection points for the first busbar 1, the second busbar 2, the first joint 3, the spring contact finger 6 and the outer sheath 8 are formed. The arc plate 71 realizes the connection with the first busbar 1, the connection with the second busbar 2, the connection with the first joint 3, and the connection with the outer sheath 8. The groove body 72 realizes the connection with the spring contact finger 6. Its technical purpose is to serve as a supporting carrier for the spring contact finger 6.

[0081] In this embodiment, the outer sheath 8 is configured to be a stainless steel tubular body having a transverse slit and the inner wall of the outer sheath 8 is configured to be connected to the inner sheath 7, the outer side surface of the outer sheath 8 is configured to be connected to the inner shielding tube 9 and one of the end surface portions of the outer sheath 8 is configured to be connected to the insulating layer body of the first busbar 1, and another end surface portion of the outer sheath 8 is configured to be connected to the insulating layer body of the second busbar 2.

[0082] The outer sheath 8 forms supporting connection points for the first busbar 1, the second busbar 2, the inner sheath 7 and the inner shielding tube 9. The outer sheath 8 realizes connection with the first busbar 1, the second busbar 2, the inner sheath 7 and the inner shielding tube 9. The technical purpose is to serve as a component for closing and connecting the inner sheath 7.

[0083] In this embodiment, the inner shielding tube 9 is configured as a shielding sleeve woven with polyester multifilament and the middle part of the inner wall of the inner shielding tube 9 is configured to be connected to the outer sheath 8, one of the end surface parts of the inner wall of the inner shielding tube 9 is configured to be connected to the first busbar 1 and the other end surface part of the inner wall of the inner shielding tube 9 is configured to be connected to the second busbar 2, and the outer surface part of the inner shielding tube 9 is configured to be connected to the joint insulation layer 92.

[0084] Through the inner shielding tube 9, supporting connection points for the first busbar 1, the second busbar 2, the outer sheath 8 and the joint insulation layer 92 are formed. The inner shielding tube 9 realizes connection with the first busbar 1, connection with the second busbar 2, connection with the outer sheath 8, and connection with the joint insulation layer 92. Its technical purpose is to serve as one of the components for shielding the joint of the first busbar 1 and the second busbar 2.

[0085] In this embodiment, the joint insulation layer 92 is set to be an insulating sleeve and the middle part of the inner wall of the joint insulation layer 92 is set to be connected to the inner shielding tube 9, the inner wall end surface parts of the joint insulation layer 92 are respectively set to be connected to the joint stress cone 93 and the outer shielding layer 94 and the outer side surface part of the joint insulation layer 92 is set to be connected to the protective cover 91.

[0086] Through the joint insulation layer 92, supporting connection points for the inner shielding tube 9, the joint stress cone 93, the outer shielding layer 94 and the protective cover 91 are formed. The joint insulation layer 92 realizes connection with the inner shielding tube 9, connection with the joint stress cone 93, connection with the outer shielding layer 94 and connection with the protective cover 91. The technical purpose is to serve as a component for insulating the joint of the first busbar 1 and the second busbar 2.

[0087] In this embodiment, the joint stress cone 93 is set as a cable joint stress cone and the joint stress cone 93 is respectively set to be clamped and connected with the joint insulation layer 92 and the first busbar 1, the joint insulation layer 92 and the second busbar 2, the outer side surface of the joint stress cone 93 is set to be connected with the joint insulation layer 92 and the outer end surface of the joint stress cone 93 is respectively set to be connected with the first busbar 1 and the second busbar 2.

[0088] A supporting connection point for the first busbar 1, the second busbar 2 and the joint insulation layer 92 is formed through the joint stress cone 93. The joint stress cone 93 realizes connection with the first busbar 1, connection with the second busbar 2 and connection with the joint insulation layer 92. Its technical purpose is to serve as a component for reinforcing the joint between the first busbar 1 and the second busbar 2.

[0089] In this embodiment, the outer shielding layer 94 is set as a copper tape shielding layer and the outer shielding layer 94 is respectively set to be wound with the insulating layer body of the first busbar 1 and the insulating layer body of the second busbar 2, and the outer shielding layer 94 is set to be connected with the protective cover 91.

[0090] Through the outer shielding layer 94, supporting connection points for the first busbar 1, the second busbar 2 and the protective cover 91 are formed. The outer shielding layer 94 realizes connection with the first busbar 1, connection with the second busbar 2, and connection with the joint insulating layer 92. Its technical purpose is to serve as the second component for shielding the joint of the first busbar 1 and the second busbar 2.

[0091] In this embodiment, the protective sleeve 91 is configured as a heat shrink tube and the middle portion of the inner wall of the protective sleeve 91 is configured to be connected to the joint insulating layer 92 , and the end surface portion of the inner wall of the protective sleeve 91 is configured to be connected to the outer shielding layer 94 .

[0092] A supporting connection point between the joint insulation layer 92 and the outer shielding layer 94 is formed by the protective cover 91. The protective cover 91 realizes the connection with the joint insulation layer 92 and the outer shielding layer 94. Its technical purpose is to serve as a component for wrapping the joint of the first busbar 1 and the second busbar 2.

[0093] In this embodiment, the first busbar 1 and the second busbar 2 and the first joint 3 and the second joint 4 are arranged to be distributed in a sliding docking manner, and the first busbar 1, the second busbar 2, the first joint 3 and the second joint 4 and the pin 5 are arranged to be distributed in a nailing connection manner, and the first busbar 1, the second busbar 2, the first joint 3 and the second joint 4 and the spring contact finger 6, the inner sheath 7, the inner shielding tube 9, the protective cover 91, the joint insulation layer 92, the joint stress cone 93 and the outer shielding layer 94 are arranged to be distributed in a jacket fixed manner, and the first busbar 1, the second busbar 2, the first joint 3 and the second joint 4 are arranged to be distributed in a jacket fixed manner. 3. The second joint 4, the spring contact finger 6, the inner sheath 7, the inner shielding tube 9, the protective sleeve 91, the joint insulating layer 92, the joint stress cone 93 and the outer shielding layer 94 are arranged to be distributed in a tube-fixed manner with the outer sheath 8. The center line of the first busbar 1, the center line of the second busbar 2, the center line of the first joint 3, the center line of the second joint 4, the center line of the spring contact finger 6, the center line of the outer sheath 8, the center line of the inner shielding tube 9, the center line of the protective sleeve 91 and the center line of the joint insulating layer 92 are arranged on the same straight line, and the rail block portion 42 is arranged to be connected to the containing groove body 33.

[0094] The present invention is further described below in conjunction with examples. The following examples are intended to illustrate the present invention rather than to further limit the present invention.

[0095] A method for connecting an insulated tubular busbar of a railway traction power supply system, one of the first embodiments of the present invention, comprises the following steps: when a first busbar 1 and a second busbar 2 are butt-jointed, the copper tube of the first busbar 1 and the copper tube of the second busbar 2 are stripped to expose the copper tube of the first busbar 1 and the copper tube of the second busbar 2, holes are drilled on the copper tube of the first busbar 1 and the copper tube of the second busbar 2 to form a pin hole, a first column 31 is installed in the copper tube of the first busbar 1, a pin 5 is installed in the pin hole of the copper tube of the first busbar 1 and the first blind hole 34 The first connector 3 is installed in the copper tube of the first busbar 1, the second column 41 is installed in the copper tube of the second busbar 2, the pin 5 is installed in the pin hole of the copper tube of the second busbar 2 and the pin hole of the second blind hole 43, so that the second connector 4 is installed in the copper tube of the second busbar 2, the outer shielding layer 94 is respectively wound on the insulating layer of the first busbar 1 and the insulating layer of the second busbar 2, the spring contact finger 6, the outer sheath 8, the inner shielding tube 9, the connector insulating layer 92 and the protective cover 91 are covered on the first busbar 1, and the rail block 42 is connected with the containing groove 33. The spring contact finger 6 is placed on the copper tube of the first busbar 1 and the copper tube of the second busbar 2 respectively, the two arc plates 71 are closed on the copper tube of the first busbar 1 and the copper tube of the second busbar 2, the spring contact finger 6 is placed in the groove body 72, the outer sheath 8 is put on the two arc plates 71, the inner shielding tube 9 is put on the outer sheath 8, the insulating layer of the first busbar 1 and the insulating layer of the second busbar 2, the joint insulating layer 92 is put on the inner shielding tube 9, the insulating layer of the first busbar 1 and the insulating layer of the second busbar 2, and the joint stress cone 93 is installed on the joint insulating layer 92 and the outer shielding layer 9 4, put the protective cover 91 on the joint insulation layer 92 and the outer shielding layer 94, so as to complete the docking of the first busbar 1 and the second busbar 2. When replacing the first busbar 1 and the second busbar 2, take out the protective cover 91 from the joint insulation layer 92, take out the joint insulation layer 92 from the inner shielding tube 9, take out the joint stress cone 93, take out the outer sheath 8 from the inner sheath 7, separate the two arc plates 71 from the copper tube of the first busbar 1 and the copper tube of the second busbar 2, and slide the track block part 42 out of the containing groove body 33, so as to complete the separation of the first busbar 1 and the second busbar 2.

[0096] An intermediate connection device for an insulated tubular busbar in a railway traction power supply system, Figure 8The second embodiment of the first embodiment of the present invention is described in detail with reference to the accompanying drawings, including a first busbar 1, a second busbar 2, a first joint 3, a second joint 4, a pin 5, a spring contact finger 6, an inner sheath 7, an outer sheath 8, an inner shielding tube 9, a joint insulation layer 92, a joint stress cone 93, a first cold shrink terminal 98 and a second cold shrink terminal 99, and a pin 5 is respectively arranged between the first busbar 1 and the first joint 3, and between the second busbar 2 and the second joint 4, an inner sheath 7 is arranged between the first busbar 1, the second busbar 2 and the first joint 3, and an inner sheath 7 is arranged between the inner sheath 7 and the first busbar 1, and between the inner sheath 7 and the first busbar 1. Spring contact fingers 6 are respectively arranged between the two busbars 2, an outer sheath 8 is arranged between the first busbar 1, the second busbar 2 and the inner sheath 7, and an inner shielding tube 9 is arranged between the first busbar 1, the second busbar 2 and the outer sheath 8, a first cold shrink terminal 98 is arranged on the first busbar 1, and a second cold shrink terminal 99 is arranged on the second busbar 2, a joint insulation layer 92 is arranged between the first busbar 1 and the first cold shrink terminal 98 and the second busbar 2 and the second cold shrink terminal 99, and a joint stress cone 93 is respectively arranged between the first cold shrink terminal 98 and the first busbar 1 and between the second cold shrink terminal 99 and the second busbar 2.

[0097] In this embodiment, the joint insulation layer 92 is configured as an insulating sleeve and the middle portion of the inner wall of the joint insulation layer 92 is configured to be connected to the inner shielding tube 9, one of the end surface portions of the inner wall of the joint insulation layer 92 is configured to be connected to the first cold shrink terminal 98 and the other end surface portion of the inner wall of the joint insulation layer 92 is configured to be connected to the second cold shrink terminal 99.

[0098] A supporting connection point for the inner shielding tube 9, the first cold shrink terminal 98 and the second cold shrink terminal 99 is formed through the joint insulation layer 92. The joint insulation layer 92 realizes connection with the inner shielding tube 9, connection with the first cold shrink terminal 98 and connection with the second cold shrink terminal 99. Its technical purpose is to serve as a component for insulating the joint of the first busbar 1 and the second busbar 2.

[0099] In this embodiment, the joint stress cone 93 is set as a cable joint stress cone and the joint stress cone 93 is respectively set to be clamped and connected to the first cold shrink terminal 98 and the first busbar 1, the second cold shrink terminal 99 and the second busbar 2, wherein the outer side surface of one joint stress cone 93 is set to be connected to the first cold shrink terminal 98 and the outer end surface of one joint stress cone 93 is set to be connected to the first busbar 1, wherein the outer side surface of another joint stress cone 93 is set to be connected to the second cold shrink terminal 99 and the outer end surface of another joint stress cone 93 is set to be connected to the second busbar 2.

[0100] Through the joint stress cone 93, supporting connection points for the first busbar 1, the second busbar 2, the first cold shrink terminal 98 and the second cold shrink terminal 99 are formed. The joint stress cone 93 realizes the connection with the first busbar 1, the connection with the second busbar 2, the connection with the first cold shrink terminal 98 and the connection with the second cold shrink terminal 99. Its technical purpose is to serve as a component for reinforcing the joints of the first busbar 1 and the second busbar 2.

[0101] In this embodiment, the first cold shrink terminal 98 and the second cold shrink terminal 99 are respectively configured as cold shrink cable terminal heads and the first cold shrink terminal 98 is configured to be socket-connected to the first busbar 1, and the second cold shrink terminal 99 is configured to be sleeve-connected to the second busbar 2. The outer surface of the inner end of the first cold shrink terminal 98 and the outer surface of the inner end of the second cold shrink terminal 99 are respectively configured to be connected to the joint insulation layer 92 and the outer wall of the outer end of the first cold shrink terminal 98 and the outer wall of the outer end of the second cold shrink terminal 99 are respectively configured to be connected to the joint stress cone 93.

[0102] Through the first cold shrink terminal 98 and the second cold shrink terminal 99, supporting connection points for the first busbar 1, the second busbar 2, the joint insulation layer 92 and the joint stress cone 93 are formed. The first cold shrink terminal 98 realizes the connection with the first busbar 1, and the second cold shrink terminal 99 realizes the connection with the second busbar 2. The first cold shrink terminal 98 and the second cold shrink terminal 99 realize the connection with the joint insulation layer 92 and the connection with the joint stress cone 93. The technical purpose is to serve as a component for reinforcing the connection between the first busbar 1 and the second busbar 2 and the electrical cabinet.

[0103] The present invention is further described below in conjunction with examples. The following examples are intended to illustrate the present invention rather than to further limit the present invention.

[0104] A method for connecting an insulated tubular busbar in a railway traction power supply system, the second embodiment of the present invention, comprises the following steps: sleeve a first cold shrink terminal 98 on a first busbar 1, sleeve a second cold shrink terminal 99 on a second busbar 2, and after the first joint 3, the second joint 4, the pin 5, the spring contact finger 6, the inner sheath 7, the outer sheath 8 and the inner shielding tube 9 are respectively installed on the first busbar 1 and the second busbar 2, sleeve a joint insulating layer 92 on the inner shielding tube 9, the first cold shrink terminal 98 and the second cold shrink terminal 99, and install a joint stress cone 93 between the first cold shrink terminal 98 and the first busbar 1, and between the second cold shrink terminal 99 and the second busbar 2, thereby completing the docking of the first busbar 1 and the second busbar 2. When the first busbar 1 and the second busbar 2 are replaced, the joint stress cone 93 is removed, and the joint insulating layer 92 is removed from the inner shielding tube 9.

[0105] An intermediate connection device for an insulated tubular busbar in a railway traction power supply system, Fig. 9 This is the third embodiment of the first embodiment of the present invention, which is specifically described in conjunction with the accompanying drawings. It includes a first busbar 1, a second busbar 2, a joint insulation layer 92, a joint stress cone 93, a first joint barrel 10, a second joint barrel 20, a strap contact finger 30, a docking electrode 40, a ferrule 50, a wrapping layer 60, a tail pipe 70, a cone support 80 and a terminal 90. The first busbar 1 is provided with a first joint barrel 10 and a joint stress cone 93, and the second busbar 2 is provided with a second joint barrel 20 and a joint stress cone 93. The strap contact finger 3 is provided between the first joint barrel 10 and the first busbar 1 and between the second joint barrel 20 and the second busbar 2. 0, the first joint tube 10 and the second joint tube 20 are respectively arranged in the docking electrode 40, and a ring 50 is respectively arranged between the first joint tube 10 and the joint stress cone 93 and between the second joint tube 20 and the joint stress cone 93, a wrapping layer 60 is arranged between the docking electrode 40 and the joint stress cone 93, and a joint insulating layer 92 is arranged on the wrapping layer 60, a tail pipe 70 is respectively arranged between the first busbar 1 and the joint insulating layer 92 and the wrapping layer 60, and between the second busbar 2 and the joint insulating layer 92 and the wrapping layer 60, and a cone support 80 is arranged between the tail pipe 70 and the joint stress cone 93, and a connecting terminal 90 is arranged on the tail pipe 70.

[0106] In this embodiment, the first connector tube 10 and the second connector tube 20 are respectively configured as a cone with an intermediate through hole body and the outer side surface portion of the first connector tube 10 and the outer side surface portion of the second connector tube 20 are respectively configured to be contact-connected with the docking electrode 40, the outer end surface portion of the first connector tube 10 and the outer end surface portion of the second connector tube 20 are respectively configured to be contact-connected with the ring 50 and the intermediate through hole body of the first connector tube 10 is respectively configured to be connected with the copper tube end and the strap contact finger 30 of the first busbar 1, and the intermediate through hole body of the second connector tube 20 is respectively configured to be connected with the copper tube end and the strap contact finger 30 of the second busbar 2.

[0107] Through the first joint tube 10 and the second joint tube 20, supporting connection points for the first busbar 1, the second busbar 2, the strap contact 30, the docking electrode 40 and the ring 50 are formed. The first joint tube 10 realizes the connection with the first busbar 1, the second joint tube 20 realizes the connection with the second busbar 2, the first joint tube 10 and the second joint tube 20 realize the connection with the strap contact 30, the connection with the docking electrode 40, and the connection with the ring 50. The technical purpose is to serve as a component for connecting the first busbar 1 and the second busbar 2 with the docking electrode 40.

[0108] In this embodiment, the outer side surfaces of the band contact fingers 30 are respectively connected to the first connector barrel 10 and the second connector barrel 20 , and the inner side surfaces of the band contact fingers 30 are respectively connected to the first bus bar 1 and the second bus bar 2 .

[0109] Through the strap contact finger 30, a supporting connection point for the first busbar 1, the second busbar 2, the first joint tube 10 and the second joint tube 20 is formed. The strap contact finger 30 realizes the connection with the first busbar 1, the connection with the second busbar 2, the connection with the first joint tube 10, and the connection with the second joint tube 20. Its technical purpose is to serve as a component for strengthening the connection between the first busbar 1 and the first joint tube 10, and between the second busbar 2 and the second joint tube 20.

[0110] In this embodiment, the docking electrode 40 is configured to include a barrel 401, a first end ear 402 and a second end ear 403, and a first inclusive hole 404 is provided at one of the ports of the barrel 401, a second inclusive hole 405 is provided at another port of the barrel 401, and the outer port of the first inclusive hole 404 is configured to be connected to the first end ear 402, the outer port of the second inclusive hole 405 is configured to be connected to the second end ear 403, and the first inclusive hole 404 is configured to be connected to the first docking electrode 401. The head tube 10 is connected and the second inclusive hole body 405 is configured to be connected to the second joint tube 20, the first end ear 402 and the second end ear 403 are respectively configured to be connected to the ring 50 and the wrapping layer 60 and the barrel 401, the first end ear 402 and the second end ear 403 are configured to be embedded in the wrapping layer 60, the barrel 401 is configured to be a columnar body and the first end ear 402 and the second end ear 403 are respectively configured to be circular tubular bodies, and the first inclusive hole body 404 and the second inclusive hole body 405 are respectively configured to be conical holes.

[0111] By docking the electrode 40, supporting connection points for the first connector tube 10, the second connector tube 20, the ferrule 50 and the wrapping layer 60 are formed. The first containing hole body 404 realizes the connection with the first connector tube 10, the second containing hole body 405 realizes the connection with the second connector tube 20, the first end ear 402 and the second end ear 403 realize the connection with the ferrule 50, and the tube part 401 realizes the connection with the wrapping layer 60. The technical purpose is to serve as a component for connecting the first connector tube 10 and the second connector tube 20 as an integral whole.

[0112] In this embodiment, the bevel angles of the first joint tube 10, the second joint tube 20, the first containing hole 404 and the second containing hole 405 are set to 38-65 degrees.

[0113] The first containing hole 404 realizes connection with the first connector tube 10 , and the second containing hole 405 realizes connection with the second connector tube 20 . The technical purpose is to prevent creepage between the first connector tube 10 , the second connector tube 20 and the docking electrode 40 .

[0114] In this embodiment, the ferrule 50 is configured as a copper annular body and the ferrule 50 is respectively configured to be socket-connected with the copper tube end of the first busbar 1 and the copper tube end of the second busbar 2, the inner end face portions of the ferrule 50 are respectively configured to be connected with the first joint tube 10, the second joint tube 20 and the docking electrode 40, and the outer end face portions of the ferrule 50 are respectively configured to be connected with the joint stress cone 93.

[0115] Through the ring 50, supporting connection points for the first busbar 1, the second busbar 2, the first joint tube 10, the second joint tube 20, the docking electrode 40 and the joint stress cone 93 are formed. The ring 50 realizes the connection with the first busbar 1, the connection with the second busbar 2, the connection with the first joint tube 10, the connection with the second joint tube 20, the connection with the docking electrode 40, and the connection with the joint stress cone 93. The technical purpose is to serve as a component for end face connection between the first joint tube 10 and the second joint tube 20 and the docking electrode 40.

[0116] In this embodiment, the wrapping layer 60 is configured as an insulating resin cylindrical body having a middle through hole body and the middle part of the middle through hole body of the wrapping layer 60 is configured to be sleeve-connected to the docking electrode 40 and the ring 50 respectively, the end part of the middle through hole body of the wrapping layer 60 is configured to be sleeve-connected to the joint stress cone 93 and the outer side surface part of the wrapping layer 60 is configured to be connected to the joint insulating layer 92, and the end part of the wrapping layer 60 is configured to be connected to the tail pipe 70.

[0117] The wrapping layer 60 forms supporting connection points for the docking electrode 40, the ferrule 50, the joint stress cone 93, the joint insulating layer 92 and the tail pipe 70. The wrapping layer 60 realizes connection with the docking electrode 40, connection with the ferrule 50, connection with the joint stress cone 93, connection with the joint insulating layer 92 and connection with the tail pipe 70. The technical purpose is to serve as one of the components for protecting the docking electrode 40.

[0118] In this embodiment, the tail tube 70 is configured as a cable joint tail tube and the inner ends of the tail tube 70 are respectively configured to be connected to the joint insulation layer 92 and the wrapping layer 60, the outer ends of the tail tube 70 are respectively configured to be connected to the first busbar 1 and the second busbar 2, and the inner wall of the tail tube 70 is configured to be connected to the cone support 80.

[0119] Through the tail pipe 70, a supporting connection point for the first busbar 1, the second busbar 2, the wrapping layer 60 and the joint insulating layer 92 is formed. The tail pipe 70 realizes connection with the first busbar 1, the second busbar 2, the wrapping layer 60, and the joint insulating layer 92. Its technical purpose is to serve as the second component for protecting the docking electrode 40.

[0120] In the present embodiment, the joint insulating layer 92 is configured as an insulating sleeve and the inner wall of the joint insulating layer 92 is configured to be connected to the wrapping layer 60 , and the end surface portion of the joint insulating layer 92 is configured to be connected to the tail pipe 70 .

[0121] A supporting connection point for the wrapping layer 60 and the tail pipe 70 is formed through the joint insulating layer 92. The joint insulating layer 92 realizes the connection with the wrapping layer 60 and the connection with the tail pipe 70. The technical purpose is to serve as the third component for protecting the docking electrode 40.

[0122] In this embodiment, the joint stress cone 93 is set as a cable joint stress cone and the joint stress cone 93 is respectively set to be clamped and connected with the wrapping layer 60 and the first busbar 1, the wrapping layer 60 and the second busbar 2, the outer end face portion of the joint stress cone 93 is set to be connected with the cone support 80 and the inner end face portion of the joint stress cone 93 is set to be connected with the ring 50.

[0123] Through the joint stress cone 93, a supporting connection point for the first busbar 1, the second busbar 2, the ring 50 and the cone support 80 is formed. The joint stress cone 93 realizes the connection with the first busbar 1, the connection with the second busbar 2, the connection with the ring 50, and the connection with the cone support 80. Its technical purpose is to serve as one of the components for reinforcing the joint of the first busbar 1 and the second busbar 2.

[0124] In this embodiment, the cone support 80 is configured as a wedge-shaped block and is configured to be clamped and connected to the joint stress cone 93 and the tail pipe 70 , and the inner end surface portion of the cone support 80 is configured to be connected to a thrust screw located on the tail pipe 70 .

[0125] A supporting connection point between the joint stress cone 93 and the tail pipe 70 is formed by the cone support 80. The cone support 80 realizes connection with the joint stress cone 93 and the tail pipe 70. Its technical purpose is to serve as the second component for reinforcing the joint between the first busbar 1 and the second busbar 2.

[0126] In this embodiment, the connection terminal 90 is configured to be connected to the tail pipe 70 .

[0127] A supporting connection point for the tail pipe 70 is formed by the connecting terminal 90 , and the connection with the tail pipe 70 is realized by the connecting terminal 90 . The technical purpose of the connecting terminal 90 is to be used as a component for grounding protection of the joint between the first busbar 1 and the second busbar 2 .

[0128] In one of the supporting examples of the third embodiment of the present invention, the bevel angles of the first joint tube 10, the second joint tube 20, the first containing hole body 404 and the second containing hole body 405 are set to 38°.

[0129] In the second supporting example of the third embodiment of the present invention, the bevel angles of the first joint tube 10, the second joint tube 20, the first containing hole body 404 and the second containing hole body 405 are set to 65°.

[0130] In the fourth supporting example of the third first embodiment of the present invention, the bevel angles of the first joint tube 10, the second joint tube 20, the first containing hole 404 and the second containing hole 405 are set to 51°.

[0131] The present invention is further described below in conjunction with examples. The following examples are intended to illustrate the present invention rather than to further limit the present invention.

[0132] A method for connecting an insulated tubular busbar in a railway traction power supply system, the third embodiment of the present invention, the steps are: respectively sleeve the tail tube 70, the joint stress cone 93, the ferrule 50 and the strap contact finger 30 on the first busbar 1 and the second busbar 2, install the first joint tube 10 on the first busbar 1 and the strap contact finger 30, install the second joint tube 20 on the first busbar 1 and the second busbar 2, sleeve the joint insulation layer 92 on the wrapping layer 60, sleeve the wrapping layer 60 on the docking electrode 40, install the first joint tube 10 on the first containing hole body 404, install the second joint tube 20 on the second containing hole body 405, connect the tail tube 70 with the wrapping layer 60 and the joint insulation layer 92, and insert the outer end of the tail tube 70 into the The cone holder 80 is placed between the joint stress cone 93 and the tail tube 70, and the cone holder 80 is installed between the joint stress cone 93 and the tail tube 70 by means of the thrust screw located on the tail tube 70. Then, the outer end of the tail tube 70 is restored to its original state, and the wire of the terminal block 90 is connected to the ground, thereby completing the docking of the first busbar 1 and the second busbar 2. When the first busbar 1 and the second busbar 2 are replaced, the outer end of the tail tube 70 is flanged upward, and the cone holder 80 is removed from between the joint stress cone 93 and the tail tube 70 by means of the thrust screw located on the tail tube 70, and the first joint tube 10 is removed from the first containing hole body 404, and the second joint tube 20 is removed from the second containing hole body 405.

[0133] When verifying the present invention, when the vertical surface connection of the first busbar 1 and the second busbar 2 is achieved through the first joint 3 and the second joint 4, not only the connection strength is improved, but also the poor electrical connection phenomenon at the connection position is eliminated through the contact between the planes. When the horizontal surface connection of the first busbar 1 and the second busbar 2 is achieved through the first joint tube 10, the second joint tube 20 and the docking electrode 40, the poor electrical connection phenomenon at the connection position is also eliminated through the contact between the curved surfaces.

[0134] In a second embodiment of the present invention, the intermediate connection device body and the joint device are connected to each other in a manner that initializes the butt-jointed state of the insulating tubular busbar.

[0135] In this embodiment, the connector device is connected to the intermediate connector body in a sliding connection manner.

[0136] In this embodiment, the main body of the intermediate connecting device also includes an inner shielding tube 9, a protective sleeve 91, a joint insulation layer 92, a joint stress cone 93 and an outer shielding layer 94 or an inner shielding tube 9, a joint insulation layer 92, a joint stress cone 93, a first cold shrink terminal 98 and a second cold shrink terminal 99 or a joint insulation layer 92, a joint stress cone 93, a tail tube 70, a cone support 80 and a terminal 90.

[0137] In this embodiment, the connector device is configured to include a first connector 3 and a second connector 4 or a first connector tube 10 , a second connector tube 20 and a docking electrode 40 .

[0138] In this embodiment, a first accessory device is also included and is arranged between the intermediate connection device body and the joint device. The first accessory device is arranged as a pin 5 .

[0139] In this embodiment, a second accessory device is also included and is arranged between the intermediate connection device body and the connector device. The second accessory device is arranged to include a spring contact finger 6 , an inner sheath 7 and an outer sheath 8 .

[0140] In this embodiment, a third accessory device is further included and is disposed between the intermediate connection device body and the connector device. The third accessory device is configured to include a strap contact finger 30 and a wrapping layer 60 .

[0141] In this embodiment, a fourth accessory device is further included and is arranged between the intermediate connection device body and the joint device, and the third accessory device is arranged as a ferrule 50 .

[0142] The second embodiment of the present invention is based on the first embodiment.

[0143] The second embodiment of the present invention comprises the following steps: the intermediate connection device body realizes the butt connection of the insulating tubular busbar, and the joint device realizes the initialization of the butt state of the insulating tubular busbar.

[0144] The second embodiment of the present invention is based on the first embodiment.

[0145] The present invention has the following characteristics:

[0146] 1. Due to the design of the intermediate connection device body and the joint device, the butt connection of the insulating tubular busbar is realized through the intermediate connection device body, and the butt state of the insulating tubular busbar is initialized through the joint device. It is no longer necessary to saw off the busbar when dismantling it, thus meeting the requirement for rapid replacement of the insulating tubular busbar used in the railway traction power supply system.

[0147] 2. Due to the design of the inner shielding tube 9, the protective sleeve 91, the joint insulating layer 92, the joint stress cone 93 and the outer shielding layer 94, the outer jacket protection treatment is achieved.

[0148] 3. Due to the design of the first joint 3 and the second joint 4, a keyway butt connection is achieved.

[0149] 4. Due to the design of the pin shaft 5, the shaft pin connection is realized.

[0150] 5. Due to the design of the spring contact finger 6, the inner sheath 7 and the outer sheath 8, the inner hoop is fixedly connected.

[0151] 6. Due to the design of the first cold shrink terminal 98 and the second cold shrink terminal 99, the connection between the first busbar 1 and the second busbar 2 and the electrical cabinet is achieved.

[0152] 7. Due to the design of the strap contact finger 30 and the wrapping layer 60, a fixed connection of the inner hoop is achieved.

[0153] 8. Due to the design of the ferrule 50, the intermediate connection area between the first busbar 1 and the second busbar 2 is increased.

[0154] 9. Since the design limits the numerical range of the structural shape, the numerical range is the technical feature in the technical solution of the present invention, rather than a technical feature calculated by a formula or obtained through a limited number of tests. Tests have shown that the technical feature of this numerical range has achieved good technical effects.

[0155] 10. Due to the design of the technical features of the present invention, the effects of the individual and combined technical features have been shown through experiments to have various performance indicators of the present invention that are at least 1.7 times the existing performance indicators, and have been evaluated to have good market value.

[0156] There are other technical features for connecting the intermediate connection device body and the joint device for initializing the docking state of the insulated tubular busbar, which are all embodiments of the present invention, and the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to meet the requirements of the Patent Law, Patent Implementing Rules and Examination Guidelines, all possible combinations of the technical features in the above-mentioned embodiments will no longer be described.

[0157] Therefore, in the technical field of intermediate connection devices and methods for insulated tubular busbars of railway traction power supply systems, all technical contents including an intermediate connection device body having a first busbar 1 and a second busbar 2, a connector device arranged between the first busbar 1 and the second busbar 2 and used to achieve a detachable connection between the first busbar 1 and the second busbar 2 are within the protection scope of the present invention.

Claims

1. An intermediate connection device for an insulated tubular busbar of a railway traction power supply system, characterized by: The invention comprises an intermediate connection device body having a first busbar (1) and a second busbar (2), and a connector device arranged between the first busbar (1) and the second busbar (2) and used for realizing a detachable connection between the first busbar (1) and the second busbar (2). The intermediate connection device body also includes an inner shielding tube (9), a protective sleeve (91), a joint insulating layer (92), a joint stress cone (93) and an outer shielding layer (94). The connector device is configured to include a first connector (3) and a second connector (4). It also includes a first accessory device and the first accessory device is arranged between the intermediate connection device body and the joint device, and the first accessory device is arranged as a pin shaft (5). It also includes a second accessory device and is arranged between the intermediate connection device body and the joint device. The second accessory device is arranged to include a spring contact finger (6), an inner sheath (7) and an outer sheath (8). A pin shaft (5) is provided between the first busbar (1) and the first joint (3), and between the second busbar (2) and the second joint (4), an inner sheath (7) is provided between the first busbar (1), the second busbar (2) and the first joint (3), and spring contact fingers (6) are provided between the inner sheath (7) and the first busbar (1), and between the inner sheath (7) and the second busbar (2), an outer sheath (8) is provided between the first busbar (1), the second busbar (2) and the inner sheath (7), and a spring contact finger (6) is provided between the first busbar (1), the second busbar (2) and the inner sheath (7). 2) and an outer sheath (8), an inner shielding tube (9) is arranged between the first busbar (1) and the second busbar (2), outer shielding layers (94) are arranged on the first busbar (1) and the second busbar (2), and a joint insulating layer (92) is arranged between the first busbar (1), the second busbar (2) and the inner shielding tube (9), a protective sleeve (91) is arranged between the outer shielding layer (94) and the joint insulating layer (92), and joint stress cones (93) are arranged between the joint insulating layer (92) and the first busbar (1), and between the joint insulating layer (92) and the second busbar (2), respectively. The copper tube end of the first busbar (1) is arranged to be connected to the first joint (3) through a pin shaft (5), and the copper tube end of the second busbar (2) is arranged to be connected to the second joint (4) through a pin shaft (5), the outer surface of the copper tube of the first busbar (1) and the outer surface of the copper tube of the second busbar (2) are arranged to be connected to the spring contact finger (6) and the inner sheath (7), and the insulation layer end of the first busbar (1) and the insulation layer end of the second busbar (2) are arranged to be connected to the inner sheath (7) and the outer sheath (7). The outer surface of the insulating layer of the first busbar (1) and the outer surface of the insulating layer of the second busbar (2) are respectively arranged to be connected to the inner shielding tube (9), the joint insulating layer (92), the joint stress cone (93) and the outer shielding layer (94); and the copper tube end of the first busbar (1) and the copper tube end of the second busbar (2) are respectively provided with a pin shaft hole body, and the pin shaft hole body of the first busbar (1) and the pin shaft hole body of the second busbar (2) are respectively arranged to be connected to the pin shaft (5), The first joint (3) is configured to include a first column portion (31) and a disk portion (32), and the outer end of the first column portion (31) is configured to be connected to the inner end face portion of the disk portion (32), an accommodating groove (33) is provided on the outer end face portion of the disk portion (32), and a first blind hole body (34) is provided on the inner end of the first column portion (31), a pin hole body is provided on the side wall of the first blind hole body (34), and the pin hole body of the first blind hole body (34) is configured to be connected to the pin (5), and the outer side face portion of the first column portion (31) is configured to be connected to the first busbar The inner end surface of the disk portion (32) is configured to be connected to the inner wall of the copper tube of the first busbar (1), the outer end surface of the disk portion (32) is configured to be connected to the copper tube end of the second busbar (2), and the outer side surface of the disk portion (32) is configured to be connected to the inner sheath (7), the containing groove body (33) is configured to be connected to the second joint (4), and the first column portion (31) and the disk portion (32) are respectively configured to be circular rod-shaped bodies, the containing groove body (33) is configured to be a dovetail groove-shaped body, and the first blind hole body (34) is configured to be a circular hole-shaped body, The second joint (4) is configured to include a second column portion (41) and a track block portion (42), and the outer end surface portion of the second column portion (41) is configured to be connected to the track block portion (42), a second blind hole body (43) is provided at the inner end of the second column portion (41), and a pin hole body is provided on the side wall of the second blind hole body (43), the pin hole body of the second blind hole body (43) is configured to be connected to the pin (5), and the track block portion (42) is configured to be connected to the first joint (3), the outer side surface portion of the second column portion (41) is configured to be connected to the inner wall of the copper tube of the second busbar (2), and the second column portion (41) is configured to be a round rod-shaped body, the track block portion (42) is configured to be a dovetail block-shaped body, and the second blind hole body (43) is a round hole-shaped body, The pin shaft (5) is configured as a circular rod-shaped body and the pin shaft (5) is respectively configured to be connected in series with the first busbar (1), the second busbar (2), the first joint (3) and the second joint (4). The pin shaft (5) is respectively configured to be arranged and distributed along the circumference of the first busbar (1) and the circumference of the second busbar (2). The spring contact finger (6) is arranged to be embeddedly connected with the inner sheath (7), and the spring contact finger (6) is respectively arranged to be connected to the copper tube of the first busbar (1) and the copper tube of the second busbar (2) in a sleeve-type manner. The inner sheath (7) is configured as a cylindrical body composed of two arc plates (71) and a groove body (72) is configured on the inner wall of the arc plate (71). The inner wall of the arc plate (71) is configured to be connected to the copper tube of the first busbar (1), the copper tube of the second busbar (2) and the first joint (3) respectively and the outer side surface of the arc plate (71) is configured to be connected to the outer sheath (8). One end surface of the arc plate (71) is configured to be connected to the insulating layer of the first busbar (1) and the other end surface of the arc plate (71) is configured to be connected to the insulating layer of the second busbar (2). The groove body (72) is configured to be connected to the spring contact finger (6) and the arc plates (71) are configured to be a part of the copper tubular body respectively. The groove body (72) is configured to be a U-shaped open groove body and the groove body (72) is configured to be arranged and distributed at intervals along the transverse center line of the arc plate (71). The outer sheath (8) is configured as a stainless steel tubular body having a transverse slit, and the inner wall of the outer sheath (8) is configured to be connected to the inner sheath (7), the outer side surface of the outer sheath (8) is configured to be connected to the inner shielding tube (9), and one end surface of the outer sheath (8) is configured to be connected to the insulating layer body of the first busbar (1), and the other end surface of the outer sheath (8) is configured to be connected to the insulating layer body of the second busbar (2). The inner shielding tube (9) is configured as a shielding sleeve woven from polyester multifilaments, and the middle portion of the inner wall of the inner shielding tube (9) is configured to be connected to the outer sheath (8), one end surface portion of the inner wall of the inner shielding tube (9) is configured to be connected to the first busbar (1), and the other end surface portion of the inner wall of the inner shielding tube (9) is configured to be connected to the second busbar (2), and the outer side surface portion of the inner shielding tube (9) is configured to be connected to the joint insulating layer (92). The joint insulation layer (92) is configured as an insulation sleeve and the middle portion of the inner wall of the joint insulation layer (92) is configured to be connected to the inner shielding tube (9), the inner wall end portions of the joint insulation layer (92) are configured to be connected to the joint stress cone (93) and the outer shielding layer (94) respectively, and the outer side portion of the joint insulation layer (92) is configured to be connected to the protective sleeve (91). The joint stress cone (93) is configured as a cable joint stress cone and the joint stress cone (93) is configured to be clamped and connected to the joint insulation layer (92) and the first busbar (1), and the joint insulation layer (92) and the second busbar (2), respectively; the outer side surface of the joint stress cone (93) is configured to be connected to the joint insulation layer (92), and the outer end surface of the joint stress cone (93) is configured to be connected to the first busbar (1) and the second busbar (2), respectively; The outer shielding layer (94) is configured as a copper tape shielding layer and the outer shielding layer (94) is configured to be connected in a winding manner to the insulating layer body of the first busbar (1) and the insulating layer body of the second busbar (2), respectively. The outer shielding layer (94) is configured to be connected to the protective sleeve (91). The protective sleeve (91) is configured as a heat shrinkable sleeve, and the middle portion of the inner wall of the protective sleeve (91) is configured to be connected to the joint insulating layer (92), and the end surface portion of the inner wall of the protective sleeve (91) is configured to be connected to the outer shielding layer (94). The first busbar (1) and the second busbar (2) and the first joint (3) and the second joint (4) are arranged to be distributed in a sliding docking manner, and the first busbar (1), the second busbar (2), the first joint (3) and the second joint (4) and the pin shaft (5) are arranged to be distributed in a nailing connection manner, and the first busbar (1), the second busbar (2), the first joint (3) and the second joint (4) and the spring contact finger (6), the inner sheath (7), the inner shielding tube (9), the protective sheath (91), the joint insulation layer (92), the joint stress cone (93) and the outer shielding layer (94) are arranged to be distributed in a jacket fixing manner, and the first busbar (1), the second busbar (2), the first joint (3) , the second joint (4), the spring contact finger (6), the inner sheath (7), the inner shielding tube (9), the protective sheath (91), the joint insulating layer (92), the joint stress cone (93) and the outer shielding layer (94) are arranged to be distributed in a tube-fixed manner, the center line of the first busbar (1), the center line of the second busbar (2), the center line of the first joint (3), the center line of the second joint (4), the center line of the spring contact finger (6), the center line of the outer sheath (8), the center line of the inner shielding tube (9), the center line of the protective sheath (91) and the center line of the joint insulating layer (92) are arranged on the same straight line, and the track block portion (42) is arranged to be connected to the containing groove body (33).

2. An intermediate connection method for an intermediate connection device for an insulated tubular busbar of a railway traction power supply system according to claim 1, characterized in that the steps are: The intermediate connection device body realizes the butt connection of the insulating tubular busbar, and the joint device realizes the initialization of the butt state of the insulating tubular busbar. When the first busbar (1) and the second busbar (2) are butt-jointed, the copper tube of the first busbar (1) and the copper tube of the second busbar (2) are stripped to expose the copper tube of the first busbar (1) and the copper tube of the second busbar (2), holes are drilled on the copper tube of the first busbar (1) and the copper tube of the second busbar (2) to form a pin hole, the first column (31) is installed in the copper tube of the first busbar (1), the pin (5) is installed in the pin hole of the copper tube of the first busbar (1) and the pin hole of the first blind hole (34), thereby installing the first joint (3) in the copper tube of the first busbar (1), and installing the second column (41) in the first blind hole (34). The pin shaft (5) is installed in the pin shaft hole body of the copper tube of the second busbar (2) and the pin shaft hole body of the second blind hole body (43), so that the second joint (4) is installed in the copper tube of the second busbar (2), the outer shielding layer (94) is wound on the insulating layer body of the first busbar (1) and the insulating layer body of the second busbar (2), respectively, the spring contact finger (6), the outer sheath (8), the inner shielding tube (9), the joint insulating layer (92) and the protective cover (91) are covered on the first busbar (1), the rail block part (42) is connected to the containing groove body (33), and the spring contact finger (6) is placed on the copper tube of the first busbar (1) and the second busbar ( 2), close the two arc plates (71) on the copper tube of the first busbar (1) and the copper tube of the second busbar (2), put the spring contact finger (6) into the groove body (72), put the outer sheath (8) on the two arc plates (71), put the inner shielding tube (9) on the outer sheath (8), the insulating layer of the first busbar (1) and the insulating layer of the second busbar (2), put the joint insulation layer (92) on the inner shielding tube (9), the insulating layer of the first busbar (1) and the insulating layer of the second busbar (2), install the joint stress cone (93) between the joint insulation layer (92) and the outer shielding layer (94), put the protective cover (91) on the joint The insulating layer (92) and the outer shielding layer (94) are connected to each other, thereby completing the connection between the first busbar (1) and the second busbar (2). When replacing the first busbar (1) and the second busbar (2), the protective cover (91) is removed from the joint insulating layer (92), the joint insulating layer (92) is removed from the inner shielding tube (9), the joint stress cone (93) is removed, the outer sheath (8) is removed from the inner sheath (7), the two arc plates (71) are separated from the copper tube of the first busbar (1) and the copper tube of the second busbar (2), and the rail block portion (42) is slid out of the containing groove body (33), thereby completing the separation of the first busbar (1) and the second busbar (2).

3. An intermediate connection device for an insulated tubular busbar of a railway traction power supply system, characterized in that: The invention comprises an intermediate connection device body having a first busbar (1) and a second busbar (2), and a connector device arranged between the first busbar (1) and the second busbar (2) and used for realizing a detachable connection between the first busbar (1) and the second busbar (2). The intermediate connection device body also includes an inner shielding tube (9), a joint insulating layer (92), a joint stress cone (93), a first cold shrink terminal (98) and a second cold shrink terminal (99). The connector device is configured to include a first connector (3) and a second connector (4). A pin shaft (5) is provided between the first busbar (1) and the first joint (3), and between the second busbar (2) and the second joint (4), an inner sheath (7) is provided between the first busbar (1), the second busbar (2) and the first joint (3), and spring contact fingers (6) are provided between the inner sheath (7) and the first busbar (1), and between the inner sheath (7) and the second busbar (2), an outer sheath (8) is provided between the first busbar (1), the second busbar (2) and the inner sheath (7), and a spring contact finger (6) is provided between the first busbar (1), the second busbar (2) and the inner sheath (7). An inner shielding tube (9) is arranged between the first busbar (2) and the outer sheath (8); a first cold shrink terminal (98) is arranged on the first busbar (1) and a second cold shrink terminal (99) is arranged on the second busbar (2); a joint insulating layer (92) is arranged between the first busbar (1) and the first cold shrink terminal (98) and the second busbar (2) and the second cold shrink terminal (99); and a joint stress cone (93) is arranged between the first cold shrink terminal (98) and the first busbar (1) and between the second cold shrink terminal (99) and the second busbar (2). The joint insulation layer (92) is configured as an insulation sleeve and the middle portion of the inner wall of the joint insulation layer (92) is configured to be connected to the inner shielding tube (9), one end surface portion of the inner wall of the joint insulation layer (92) is configured to be connected to the first cold shrink terminal (98) and the other end surface portion of the inner wall of the joint insulation layer (92) is configured to be connected to the second cold shrink terminal (99), The joint stress cone (93) is configured as a cable joint stress cone and the joint stress cone (93) is respectively configured to be clamped and connected to a first cold shrink terminal (98) and a first busbar (1), a second cold shrink terminal (99) and a second busbar (2), wherein an outer side surface of one joint stress cone (93) is configured to be connected to the first cold shrink terminal (98) and an outer end surface of one joint stress cone (93) is configured to be connected to the first busbar (1), wherein an outer side surface of another joint stress cone (93) is configured to be connected to the second cold shrink terminal (99) and an outer end surface of another joint stress cone (93) is configured to be connected to the second busbar (2), The first cold shrink terminal (98) and the second cold shrink terminal (99) are respectively configured as cold shrink cable terminal heads, and the first cold shrink terminal (98) is configured to be connected to the first busbar (1) in a sleeve-type connection, and the second cold shrink terminal (99) is configured to be connected to the second busbar (2) in a sleeve-type connection, the outer side surface of the inner end of the first cold shrink terminal (98) and the outer side surface of the inner end of the second cold shrink terminal (99) are respectively configured to be connected to the joint insulation layer (92), and the inner wall of the outer end of the first cold shrink terminal (98) and the inner wall of the outer end of the second cold shrink terminal (99) are respectively configured to be connected to the joint stress cone (93).

4. An intermediate connection method for an intermediate connection device for an insulated tubular busbar of a railway traction power supply system according to claim 3, characterized in that the steps are: The first cold shrink terminal (98) is sleeved on the first busbar (1), and the second cold shrink terminal (99) is sleeved on the second busbar (2). After the first joint (3), the second joint (4), the pin shaft (5), the spring contact finger (6), the inner sheath (7), the outer sheath (8) and the inner shielding tube (9) are respectively installed on the first busbar (1) and the second busbar (2), the joint insulation layer (92) is sleeved on the inner shielding tube (9), the first cold shrink terminal (98) and the second cold shrink terminal (99), and the joint stress cone (93) is respectively installed between the first cold shrink terminal (98) and the first busbar (1), and between the second cold shrink terminal (99) and the second busbar (2), thereby completing the docking of the first busbar (1) and the second busbar (2). When the first busbar (1) and the second busbar (2) are replaced, the joint stress cone (93) is removed, and the joint insulation layer (92) is removed from the inner shielding tube (9).

5. An intermediate connection device for an insulated tubular busbar of a railway traction power supply system, characterized in that: The invention comprises an intermediate connection device body having a first busbar (1) and a second busbar (2), and a connector device arranged between the first busbar (1) and the second busbar (2) and used for realizing a detachable connection between the first busbar (1) and the second busbar (2). The intermediate connection device body also includes a joint insulating layer (92), a joint stress cone (93), a tail pipe (70), a cone support (80) and a connection terminal (90). The joint device is configured to include a first joint tube (10), a second joint tube (20) and a butt electrode (40). It also includes a third accessory device and the third accessory device is arranged between the intermediate connection device body and the joint device, and the third accessory device is arranged to include a watch strap contact finger (30) and a wrapping layer (60). It also includes a fourth accessory device and the fourth accessory device is arranged between the intermediate connection device body and the joint device, and the third accessory device is arranged as a ferrule (50). A first joint tube (10) and a joint stress cone (93) are respectively arranged on the first busbar (1), a second joint tube (20) and a joint stress cone (93) are respectively arranged on the second busbar (2), and a band contact finger (30) is respectively arranged between the first joint tube (10) and the first busbar (1) and between the second joint tube (20) and the second busbar (2), the first joint tube (10) and the second joint tube (20) are respectively arranged in a docking electrode (40), and between the first joint tube (10) and the joint stress cone (93) and the second joint tube (20) and the joint. A ferrule (50) is provided between the stress cones (93), a wrapping layer (60) is provided between the butt electrode (40) and the joint stress cone (93), and a joint insulating layer (92) is provided on the wrapping layer (60), a tail pipe (70) is provided between the first busbar (1) and the joint insulating layer (92) and the wrapping layer (60), and between the second busbar (2) and the joint insulating layer (92) and the wrapping layer (60), and a cone support (80) is provided between the tail pipe (70) and the joint stress cone (93), and a connection terminal (90) is provided on the tail pipe (70). The first joint tube (10) and the second joint tube (20) are respectively configured as a cone having an intermediate through hole, and the outer side surface of the first joint tube (10) and the outer side surface of the second joint tube (20) are respectively configured to be contact-connected with the docking electrode (40), the outer end surface of the first joint tube (10) and the outer end surface of the second joint tube (20) are respectively configured to be contact-connected with the ferrule (50), and the intermediate through hole of the first joint tube (10) is respectively configured to be connected with the copper tube end and the strap contact finger (30) of the first busbar (1), and the intermediate through hole of the second joint tube (20) is respectively configured to be connected with the copper tube end and the strap contact finger (30) of the second busbar (2), The outer side surface of the watchband contact finger (30) is respectively arranged to be connected to the first connector tube (10) and the second connector tube (20), and the inner side surface of the watchband contact finger (30) is respectively arranged to be connected to the first busbar (1) and the second busbar (2). The butt-jointed electrode (40) is configured to include a barrel (401), a first end ear (402) and a second end ear (403), and a first inclusion hole (404) is provided at one of the ports of the barrel (401), a second inclusion hole (405) is provided at another of the ports of the barrel (401), and an outer port of the first inclusion hole (404) is configured to be connected to the first end ear (402), an outer port of the second inclusion hole (405) is configured to be connected to the second end ear (403), and the first inclusion hole (404) is configured to be connected to the first joint barrel (10). The second inclusive hole body (405) is configured to be connected to the second joint tube (20), the first end ear portion (402) and the second end ear portion (403) are respectively configured to be connected to the ring (50) and the wrapping layer (60), and the cylinder portion (401), the first end ear portion (402) and the second end ear portion (403) are configured to be embeddedly connected to the wrapping layer (60), the cylinder portion (401) is configured to be a columnar body, and the first end ear portion (402) and the second end ear portion (403) are respectively configured to be circular tubular bodies, the first inclusive hole body (404) and the second inclusive hole body (405) are respectively configured to be tapered holes, The bevel angles of the first joint tube (10), the second joint tube (20), the first containing hole body (404) and the second containing hole body (405) are set to 38-65 degrees. The ferrule (50) is configured as a copper annular body and the ferrule (50) is configured to be sleeve-connected with the copper tube end of the first busbar (1) and the copper tube end of the second busbar (2), the inner end surface of the ferrule (50) is configured to be connected with the first joint tube (10), the second joint tube (20) and the butt electrode (40), and the outer end surface of the ferrule (50) is configured to be connected with the joint stress cone (93). The wrapping layer (60) is configured as an insulating resin cylindrical body having a middle through hole body, and the middle part of the middle through hole body of the wrapping layer (60) is configured to be sleeve-connected to the butt electrode (40) and the ferrule (50), respectively; the end part of the middle through hole body of the wrapping layer (60) is configured to be sleeve-connected to the joint stress cone (93), and the outer side part of the wrapping layer (60) is configured to be connected to the joint insulating layer (92); the end part of the wrapping layer (60) is configured to be connected to the tail pipe (70), The tail tube (70) is configured as a cable joint tail tube, and the inner end of the tail tube (70) is configured to be connected to the joint insulation layer (92) and the wrapping layer (60), respectively; the outer end of the tail tube (70) is configured to be connected to the first busbar (1) and the second busbar (2), respectively; and the inner wall of the tail tube (70) is configured to be connected to the cone support (80). The joint insulating layer (92) is configured as an insulating sleeve and the inner wall of the joint insulating layer (92) is configured to be connected to the wrapping layer (60), and the end surface of the joint insulating layer (92) is configured to be connected to the tail pipe (70). The joint stress cone (93) is configured as a cable joint stress cone and the joint stress cone (93) is configured to be clamped and connected to the wrapping layer (60) and the first busbar (1), and the wrapping layer (60) and the second busbar (2), respectively; the outer end face portion of the joint stress cone (93) is configured to be connected to the cone support (80) and the inner end face portion of the joint stress cone (93) is configured to be connected to the ferrule (50); The cone support (80) is configured as a wedge-shaped block and is configured to be clamped and connected to the joint stress cone (93) and the tail pipe (70). The inner end surface of the cone support (80) is configured to be connected to a thrust screw located on the tail pipe (70). The connection terminal (90) is configured to be connected to the tail pipe (70).

6. An intermediate connection method for an intermediate connection device for an insulated tubular busbar of a railway traction power supply system according to claim 5, characterized in that the steps are: The tail pipe (70), the joint stress cone (93), the ferrule (50) and the strap contact finger (30) are respectively sleeved on the first busbar (1) and the second busbar (2), the first joint tube (10) is installed on the first busbar (1) and the strap contact finger (30), the second joint tube (20) is installed on the first busbar (1) and the second busbar (2), the joint insulation layer (92) is sleeved on the wrapping layer (60), the wrapping layer (60) is sleeved on the butt electrode (40), the first joint tube (10) is installed on the first containing hole body (404), the second joint tube (20) is installed on the second containing hole body (405), the tail pipe (70) is connected with the wrapping layer (60) and the joint insulation layer (92), the outer end of the tail pipe (70) is flanged upward, and the joint stress cone (93) is moved inward. The cone support (80) is placed between the joint stress cone (93) and the tail tube (70), and the cone support (80) is installed between the joint stress cone (93) and the tail tube (70) by means of a thrust screw located on the tail tube (70). The outer end of the tail tube (70) is then restored to its original state, and the wire of the connection terminal (90) is connected to the ground, thereby completing the docking of the first busbar (1) and the second busbar (2). When the first busbar (1) and the second busbar (2) are replaced, the outer end of the tail tube (70) is turned upward, and the cone support (80) is removed from between the joint stress cone (93) and the tail tube (70) by means of a thrust screw located on the tail tube (70), and the first joint tube (10) is removed from the first containing hole body (404), and the second joint tube (20) is removed from the second containing hole body (405).

7. The intermediate connection device for the insulated tubular busbar of a railway traction power supply system according to claim 1, 3 or 5, characterized in that: The intermediate connection device body and the joint device are connected to each other in a manner that the butt joint state of the insulating tubular busbar is initialized.

8. The intermediate connection device for the insulated tubular busbar of the railway traction power supply system according to claim 7 is characterized in that: The connector device is connected to the intermediate connector body in a sliding connection manner.

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