Insulation tube type bus assembling device

Abstract

The invention relates to the field of cable manufacturing, in particular to an insulating tube type bus assembling device which comprises a tube clamping box and a base arranged on the side surface of the tube clamping box, the top of the base is slidably connected with a first clamping device, the top of the base is fixedly connected with a second clamping device, the interior of the tube clamping box is fixedly connected with two third clamping devices, and the two third clamping devices are fixedly connected with a second clamping device. The side surface, close to the base, of the pipe clamp box is rotationally connected with an oil feeding mechanism, the side surface of the oil feeding mechanism is fixedly connected with an oil smearing mechanism, and the side, away from the pipe clamp box, of the base is provided with a negative pressure device. In the process that the first clamp holder pushes the metal conductive tube to penetrate into the insulating tubular bus, a lubricant can synchronously flow out for oil smearing, the sealing performance of a fitting gap between the metal conductive tube and the insulating tubular bus is guaranteed, meanwhile, air in the metal conductive tube and the insulating tubular bus is absorbed through the negative pressure device, an air gap generated in the tube penetrating process is effectively reduced, and the sealing performance of the insulating tubular bus is improved. Therefore, the safety coefficient of the insulating tubular bus is improved.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing, and more specifically to an insulated tubular busbar assembly device. Background Technology

[0002] Insulated tubular busbars are busbar products that use copper or aluminum alloy tubes as conductors and are externally insulated. They have a fully insulated and shielded structure and are used in electrical installation projects. Common insulated tubular busbars have three insulation types: cast, wrapped, and extruded, to meet the needs of different voltage levels. A new production method for insulated tubular busbars is prefabrication, in which the insulated tubular busbar and the metal conductive tube are produced separately. The inner diameter of the insulated tubular busbar is slightly larger than the outer diameter of the metal conductive tube. After production, the metal conductive tube is directly inserted into the inner wall of the insulated tubular busbar for assembly, thus completing the mechanical insertion and assembly of the metal conductive tube and the insulated tubular busbar.

[0003] Chinese patent CN104900327B discloses an integrated dry-type insulated tubular busbar and its manufacturing method, comprising a hollow conductive tube, with a first insulating layer, a first shielding layer, a second insulating layer, a second shielding layer, a third insulating layer, a third shielding layer, a fourth insulating layer, and a fourth shielding layer sequentially wound around the outside of the hollow conductive tube; it has the advantages of large current carrying capacity, low skin effect, low power loss, large allowable strain, high mechanical strength, good heat dissipation, low temperature rise, extremely strong weather resistance, complete maintenance-free operation, and corrosion resistance.

[0004] While the aforementioned and similar existing technologies can push the metal conductive tube into the interior of the insulated tubular busbar for assembly, the process of inserting the metal conductive tube into the insulated tubular busbar requires overcoming surface roughness, deformation error, and frictional resistance due to the physical adhesion between the metal conductive tube and the inner wall of the insulating tube. The existing technology lacks a mechanism to actively eliminate air, resulting in residual gas in the gap between the two, thus creating an air gap. This causes the electric field to become distorted and concentrated at the air gap, inducing continuous partial discharge, accelerating insulation aging, increasing safety hazards, and affecting the manufacturing quality of the insulated tubular busbar.

[0005] Therefore, the present invention provides an insulated tubular busbar assembly device that can effectively reduce the air gap between the contact surface of the metal conductive tube and the insulated tubular busbar, thereby improving the safety factor of the insulated tubular busbar. Summary of the Invention

[0006] In response to the problems in existing technologies, such as the air gap easily generated between the mating surfaces of metal conductive tubes and insulated tubular busbars during the insertion of the metal conductive tubes, resulting in the electric field distortion and concentration at the air gap, inducing continuous partial discharge, accelerating insulation aging, and increasing safety hazards, an insulated tubular busbar assembly device was designed.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an insulated tubular busbar assembly device, including a pipe clamp box and a base disposed on the side surface of the pipe clamp box, a first clamp slidably connected to the top of the base, a second clamp fixedly connected to the top of the base, two third clamps fixedly connected inside the pipe clamp box, an oil supply mechanism rotatably connected to the side surface of the pipe clamp box close to the base, an oil application mechanism fixedly connected to the side surface of the oil supply mechanism, a negative pressure device disposed on the side of the base away from the pipe clamp box, and a sealing connection between the end of the connecting pipe and the metal conductive pipe; The oiling mechanism is configured to cause the stop to move centrifugally when rotating, thereby allowing the oiling mechanism to deliver lubricant into the sliding groove, and then apply the lubricant to the outer surface of the metal conductive tube through the oiling ring. The negative pressure device is configured to extend the bellows by moving the connecting pipe, thereby creating a negative pressure inside the bellows and adsorbing the air inside the metal conductive pipe and the insulated tube busbar.

[0008] Furthermore, the second clamp includes a support plate, on the side of the support plate away from the first clamp, a first cylinder and a self-centering clamp are fixedly installed, the self-centering clamp is driven by the first cylinder to clamp the metal conductive tube, and the sliding seat is threaded with an adjustable height support roller on the side away from the first clamp.

[0009] Furthermore, the oiling mechanism includes a rotating ring, the inside of which is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a stop block by a return spring. An oiling ring is fixedly connected to the inner wall of the rotating ring, and a driven gear is fixedly connected to the outer surface of the rotating ring.

[0010] Furthermore, the oil delivery mechanism includes a support ring, and the inside of the support ring is provided with an oil delivery groove and an oil outlet groove. The oil delivery groove is connected to the stop block through the oil outlet groove, and a one-way valve is provided inside the oil outlet groove.

[0011] Furthermore, the negative pressure device includes a support base, a fixed plate is fixedly connected to the upper surface of the support base, a movable plate is slidably connected to the upper surface of the support base, a corrugated pipe is provided between the fixed plate and the movable plate, a connecting pipe is fixedly connected to the side surface of the movable plate, a rubber ring is provided on the outer surface of the connecting pipe, and a push plate is slidably connected to the upper surface of the support base through a second cylinder.

[0012] Furthermore, a motor is installed on the inner wall of the pipe clamp box, and a transmission component is fixedly connected to the output end of the motor. The transmission component is a combination of a ball screw segment and a cylindrical segment.

[0013] Furthermore, the transmission component is rotatably connected to the inner wall of the base, and the ball screw section of the transmission component is screwed into the first clamp.

[0014] Furthermore, a driving gear is fixedly connected to the outer surface of the cylindrical section of the transmission component, and the driving gear meshes with the driven gear.

[0015] Furthermore, the self-centering fixture includes one active jaw and three driven jaws. The active jaw is rotatably connected to the output end of the first cylinder, and adjacent jaws are connected by a linkage drive.

[0016] Furthermore, the inside of the clamp box is provided with a conduit, the upper end of which is fixedly connected to the oil outlet end of the external lubricant storage tank, and the lower end of which is connected to the oil delivery tank. A control valve is provided on the oil outlet pipe of the lubricant storage tank.

[0017] The beneficial effects of this invention are: 1. The insulated tubular busbar assembly device of the present invention, by setting a negative pressure device, can reduce the residual air inside the contact surface of the metal conductive tube and the insulated tubular busbar during the process of the first clamp pushing the metal conductive tube through the insulated tubular busbar, thereby effectively reducing the probability of air gaps generated during the tube insertion process, improving the fit between the metal conductive tube and the insulated tubular busbar, helping to improve the overall performance and stability of the busbar, avoiding the phenomenon of electric field distortion concentration at the air gap and inducing continuous partial discharge, and thus improving the safety factor of the insulated tubular busbar.

[0018] 2. In the insulated tubular busbar assembly device of the present invention, during the process of pushing the metal conductive tube into the insulated tubular busbar, the lubricant on the outer surface of the front end of the metal conductive tube will be consumed as the pushing distance increases due to the constant friction between the metal conductive tube and the inner wall of the insulated tubular busbar. By setting a negative pressure device, under negative pressure conditions, the lubricant flowing between the outer surface of the metal conductive tube and the inner wall of the insulated tubular busbar can be adsorbed from the outside and moved inward, filling the air gap at the contact part between the metal tube and the insulating tube, further reducing the generation of air gaps and improving the production quality of the cable. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the clamp of the present invention; Figure 4 This is a three-dimensional structural diagram of the negative pressure device of the present invention; Figure 5 This is a three-dimensional structural diagram of the oil delivery mechanism and the oil application mechanism of the present invention; Figure 6 This is a schematic diagram of the oiling mechanism of the present invention; Figure 7 This is a schematic diagram of the internal structure of the oiling mechanism of the present invention; Figure 8 This is a cross-sectional view of the internal structure of the oil delivery mechanism and the oil application mechanism of the present invention.

[0021] In the diagram: 1. Pipe clamp box; 2. First clamp; 3. Second clamp; 31. Support plate; 32. Self-centering clamp; 321. Driving jaw; 322. Driven jaw; 323. Connecting rod; 33. First cylinder; 34. Support roller; 4. Third clamp; 5. Motor; 6. Transmission component; 7. Driving gear; 9. Oil delivery mechanism; 91. Support ring; 92. Oil delivery groove; 93. Oil outlet groove; 10. Oil wiping mechanism; 101. Rotating ring; 102. Sliding groove; 103. Stop block; 104. Return spring; 105. Oil wiping ring; 106. Driven gear; 11. Negative pressure device; 111. Support base; 112. Fixed plate; 113. Moving plate; 114. Corrugated pipe; 115. Connecting pipe; 116. Rubber ring; 117. Second cylinder; 118. Push plate; 12. Base; 13. Conduit. Detailed Implementation

[0022] To make the technical means, technical features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example: Figures 1-8 As shown, the present invention provides an insulated tubular busbar assembly device, comprising a clamp box 1 and a base 12 disposed on the side surface of the clamp box 1. A first clamp 2 is slidably connected to the top of the base 12, and a second clamp 3 is fixedly connected to the top of the base 12. Two third clamps 4 are fixedly connected inside the clamp box 1. An oil supply mechanism 9 is rotatably connected to the side surface of the clamp box 1 that is close to the base 12. An oil application mechanism 10 is fixedly connected to the side surface of the oil supply mechanism 9. A negative pressure device 11 is provided on the side of the base 12 away from the clamp box 1. A connecting pipe 115 is sealed to the end of a metal conductive pipe.

[0024] In this embodiment, the insulated tubular busbar is suspended on the first clamp 2 and the second clamp 3. At this time, the control valve on the oil outlet pipe of the external lubricant storage tank is in the closed state. When the oiling mechanism 10 rotates, the lubricant remaining inside it will adhere to the outside of the rotating ring 101 due to centrifugal force and cannot be applied outwards. The insulated tubular busbar is pushed into the pipe clamp box 1 by the first clamp 2 so that the insulated tubular busbar can be clamped and fixed by the two third clamps 4. At this time, if Figure 2As shown, the right end of the insulated tubular busbar is in sealed contact with the inner wall of the clamp box 1. Then, the metal conductive tube is hoisted onto the first clamp 2 and the second clamp 3. Subsequently, the control valve on the oil outlet pipe of the lubricant storage tank is opened, allowing the lubricant to enter the oil delivery tank 92 through the oil outlet pipe and the conduit 13. Then, the metal conductive tube is pushed into the insulated tubular busbar by the first clamp 2 for assembly. While the first clamp 2 moves to push the metal conductive tube into the insulated tubular busbar, the oiling mechanism 10 rotates, causing the stop block 103 to slide outward in a centrifugal motion, thus not blocking the oil outlet tank 93. This allows the lubricant inside the oil delivery tank 92 to flow into the sliding groove 102 through the oil outlet tank 93, and then flow to the outer surface of the metal conductive tube through the oiling ring 105. Maintaining the airtightness of the gap between the metal conductive tube and the insulated tubular busbar, while the metal conductive tube is inserted into the insulated tubular busbar, the negative pressure device 11 absorbs the air inside the metal conductive tube and the insulated tubular busbar, thereby reducing the air gap generated during the insertion process and improving the fit between the metal conductive tube and the insulated tubular busbar. This helps to improve the overall performance and stability of the busbar. Furthermore, since the metal conductive tube is constantly rubbing against the inner wall of the insulated tubular busbar, the lubricant on the outer surface of the front end of the metal conductive tube will be consumed as the insertion distance increases. Through the action of the negative pressure device 11, the lubricant flowing on the outer surface of the metal conductive tube can be adsorbed from the outside and moved inward, filling the air gap at the contact part between the metal tube and the insulated tube, further reducing the generation of air gaps and improving the production quality of the cable.

[0025] Specifically, the oil delivery mechanism 9 includes a support ring 91, with an oil delivery groove 92 and an oil outlet groove 93 inside the support ring 91. The oil delivery groove 92 is connected to the stop block 103 through the oil outlet groove 93. A one-way valve is installed inside the oil outlet groove 93 to prevent the lubricant in the sliding groove 102 from flowing back into the oil delivery groove 92. A conduit 13 is installed inside the pipe clamp box 1. The upper end of the conduit 13 is fixedly connected to the end of the oil outlet pipe of the external lubricant storage tank, and the lower end of the conduit 13 is connected to the oil delivery groove 92. A control valve is installed on the oil outlet pipe of the lubricant storage tank. The control valve can be manually and electrically controlled to open and close.

[0026] In this embodiment, before the first clamp 2 pushes the metal insulated tubular busbar, the control valve on the oil outlet pipe of the lubricant storage tank is closed to prevent the lubricant from flowing onto the outer surface of the insulated tubular busbar. Before the first clamp 2 pushes the metal conductive tube, the control valve on the oil outlet pipe of the lubricant storage tank is opened, so that the lubricant flows into the oil delivery groove 92 through the oil outlet pipe and the baffle 103 under atmospheric pressure. This allows the lubricant to enter the sliding groove 102 through the oil outlet groove 93 and flow to the outer surface of the metal conductive tube through the oil wiping ring 105 for lubrication. This ensures that the outer surface of the metal conductive tube can be continuously lubricated during the rotation of the oil wiping mechanism 10. Furthermore, the pressure on the lubricant in the lubricant storage tank is greater than the centrifugal pressure experienced by the oil wiping mechanism 10 during rotation. Therefore, after the control valve is opened, the lubricant can smoothly enter the sliding groove 102 through the oil outlet groove 93 and be applied by the oil wiping ring 105.

[0027] The choice of lubricant can be based on actual needs, such as silicone-based lubricant, highly fluid conductive paste, or other alternative substances. Silicone-based lubricants have high fluidity and are compatible with insulating materials such as epoxy resin and polytetrafluoroethylene, avoiding damage to the insulation layer and reducing assembly friction. Highly fluid conductive paste has both lubrication and conductivity functions and is used on the contact surface between metal conductive tubes and insulated tubular busbars to reduce contact resistance. The protective film formed by the lubricant can block oxygen and moisture, delaying oxidation of the surface of the metal conductive tube and aging of the insulated tubular busbar.

[0028] Specifically, the oiling mechanism 10 includes a rotating ring 101, which is fixedly connected to a support ring 91 and the two can rotate synchronously. The rotating ring 101 has a sliding groove 102 inside, and a stop 103 is slidably connected to the inner wall of the sliding groove 102 through a return spring 104. An oiling ring 105 is fixedly connected to the inner wall of the rotating ring 101. The oiling ring 105 is made of synthetic rubber, which is elastic and does not react with substances in the external environment (such as pipes, lubricants, etc.). It can be replaced if damaged. A driven gear 106 is fixedly connected to the outer surface of the rotating ring 101. The oiling mechanism 10 is configured to make the stop 103 perform centrifugal motion when rotating, so that the oil delivery mechanism 9 delivers the lubricant into the sliding groove 102, and then the lubricant is applied to the outer surface of the metal conductive pipe through the oiling ring 105.

[0029] In this embodiment, while the transmission component 6 rotates and drives the first clamp 2 to move, the transmission component 6 will drive the drive gear 7 to rotate, thereby driving the oiling mechanism 10 to rotate, causing the stop block 103 to make centrifugal motion and slide outward along the inner wall of the sliding groove 102, causing the return spring 104 to be compressed. At this time, the oil outlet groove 93 is not blocked by the stop block 103, so the lubricant inside the oil delivery groove 92 can flow into the sliding groove 102 through the oil outlet groove 93, and then flow to the outer surface of the metal conductive tube through the oiling ring 105, thereby filling the gap between the metal conductive tube and the insulating tube-shaped busbar.

[0030] Specifically, the negative pressure device 11 includes a support base 111, a fixed plate 112 is fixedly connected to the upper surface of the support base 111, a movable plate 113 is slidably connected to the upper surface of the support base 111, a corrugated pipe 114 is provided between the fixed plate 112 and the movable plate 113, a connecting pipe 115 is fixedly connected to the side surface of the movable plate 113, a rubber ring 116 is provided on the outer surface of the connecting pipe 115, and a push plate 118 is slidably connected to the upper surface of the support base 111 through a second cylinder 117. The negative pressure device 11 is configured to extend the corrugated pipe 114 by moving the connecting pipe 115, thereby creating a negative pressure inside the corrugated pipe 114, thereby adsorbing the air inside the metal conductive pipe and the insulating tube-type busbar.

[0031] In this embodiment, after the metal conductive tube is hoisted onto the first clamp 2 and the second clamp 3, the second cylinder 117 drives the push plate 118 to slide, thereby pushing the moving plate 113 and the connecting tube 115 to move, so that the end of the connecting tube 115 passes through the end of the metal conductive tube, thereby pushing the metal conductive tube and moving the connecting tube 115 to the inner wall of the first clamp 2. Then, the first clamp 2 clamps and fixes the connecting tube 115. Since the rubber ring 116 and the metal conductive tube are interference-fitted, the connecting tube 115 passes through... When the metal conductive tube is inserted, the rubber ring 116 is squeezed, thereby increasing the sealing effect of the metal conductive tube and enhancing its airtightness. Then, the motor 5 drives the transmission component 6 to rotate, thereby driving the first clamp 2 to move, which in turn drives the connecting tube 115 to push the metal conductive tube to move. During this process, the corrugated tube 114 is stretched, and the internal volume of the corrugated tube 114 increases while the pressure decreases, thereby forming a negative pressure. This absorbs the air gap between the metal conductive tube and the insulating tube-type busbar, improving the fit between the metal conductive tube and the insulating tube-type busbar.

[0032] Specifically, a motor 5 is provided on the inner wall of the pipe clamp box 1, and a transmission component 6 is fixedly connected to the output end of the motor 5. The transmission component 6 is a combination of a ball screw segment and a cylindrical segment. The transmission component 6 is rotatably connected to the inner wall of the base 12, and the ball screw segment of the transmission component 6 is screwed into the first clamp 2. A drive gear 7 is fixedly connected to the outer surface of the cylindrical segment of the transmission component 6, and the drive gear 7 meshes with the driven gear 106.

[0033] In this embodiment, the motor 5 drives the transmission component 6 to rotate, thereby driving the first clamp 2 to drive the connecting pipe 115 to push the metal conductive tube into the interior of the insulated tubular busbar. At the same time, the rotation of the transmission component 6 drives the drive gear 7 to rotate, thereby driving the oiling mechanism 10 to rotate. This allows the corrugated pipe 114 to extend and absorb the air gap between the metal conductive tube and the insulated tubular busbar, while the lubricant flows through the oiling ring 105 to the outer surface of the metal conductive tube, filling the gap between the metal conductive tube and the insulated tubular busbar, thus ensuring the sealing of the interior of the metal conductive tube and the insulated tubular busbar.

[0034] Specifically, the second clamp 3 includes a support plate 31. A first cylinder 33 and a self-centering clamp 32 are fixedly installed on the side of the support plate 31 away from the first clamp 2. The self-centering clamp 32 is driven by the first cylinder 33 to clamp the metal conductive tube. An adjustable height support roller 34 is threaded on the side of the sliding seat away from the first clamp 2. The self-centering clamp 32 includes one active claw 321 and three driven claws 322. The active claw 321 is rotatably connected to the output end of the first cylinder 33. Adjacent claws are connected by a connecting rod 323.

[0035] In this embodiment, the self-centering clamp 32 includes one active jaw 321 and three driven jaws 322. Adjacent jaws are connected by a connecting rod 323. When the output end of the first cylinder 33 extends and drives the active jaw 321 to rotate, it will drive the other three driven jaws 322 to rotate together through the connecting rod 323, so that the four jaws can rotate simultaneously to clamp and position the metal conductive tube or the insulated tube-type busbar. The structure of the first clamp 2 and the third clamp 4 is the same as that of the second clamp 3. The first clamp 2 is provided with a sliding seat that is screwed into the transmission member 6 below it. When in use, the operator first hoists the insulated tubular busbar onto the first clamp 2 and the second clamp 3, clamping it with the first clamp 2 and the second clamp 3 to make the insulated tubular busbar coaxial with the circular hole, and placing the metal conductive tube on top of the support roller 34. Then, the second clamp 3 releases its clamp on the insulated tubular busbar, and the first clamp 2 moves to push the insulated tubular busbar into the pipe clamp box 1, clamping it with the two third clamps 4. Then, the metal conductive tube is hoisted onto the first clamp 2 and the second clamp 3, clamped with the first clamp 2 and the second clamp 3, and placed on top of the support roller 34 to make the metal conductive tube coaxial with the insulated tubular busbar. Then, the second clamp 3 releases its clamp on the metal conductive tube, and the first clamp 2 moves to push the metal conductive tube into the insulated tubular busbar, finally completing the assembly process.

[0036] In this embodiment, if the negative pressure provided by the negative pressure device 11 is insufficient, the diameter of the bellows 114 can be increased, or other vacuuming equipment can be used to replace the bellows 114 and seal it with the connecting pipe 115 to provide stronger negative pressure to compensate for the problem of insufficient negative pressure.

[0037] Working principle: First, the insulated tubular busbar is hoisted onto the first clamp 2 and the second clamp 3. By moving the first clamp 2, the insulated tubular busbar is pushed into the inner wall of the clamp box 1. Then, the insulated tubular busbar is clamped by the third clamp 4. During this process, since the control valve on the oil outlet pipe of the lubricant storage tank is in the closed state, the lubricant will not flow out, avoiding the lubricant from flowing onto the outer surface of the insulated tubular busbar and causing damage. Then, the metal conductive pipe is hoisted onto the first clamp 2 and the second clamp 3, and the connecting pipe 115 is connected to the end of the metal conductive pipe away from the clamp box 1. The oil outlet pipe of the lubricant storage tank is then connected to the first clamp 2 and the second clamp 3. The control valve opens, and then the transmission component 6 drives the first clamp 2 to move while simultaneously driving the oiling mechanism 10 to rotate and apply oil. As the first clamp 2 pushes the metal conductive tube into the insulated tubular busbar, the negative pressure device 11 creates a negative pressure inside the conductive metal tube, thereby absorbing the air gap between the metal conductive tube and the insulated tubular busbar. At the same time, the rotation of the oiling mechanism 10 causes lubricant to flow out and apply oil to the outer surface of the metal conductive tube, thus maintaining the sealing of the gap between the metal conductive tube and the insulated tubular busbar and reducing the air content at the external connection between the two, thereby ensuring the effective removal of air gaps.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulated tubular busbar assembly device, comprising a pipe clamp box (1) and a base (12) disposed on the side surface of the pipe clamp box (1), characterized in that: The top of the base (12) is slidably connected to a first clamp (2), the top of the base (12) is fixedly connected to a second clamp (3), the inside of the pipe clamp box (1) is fixedly connected to two third clamps (4), the side surface of the pipe clamp box (1) close to the base (12) is rotatably connected to an oil delivery mechanism (9), the side surface of the oil delivery mechanism (9) is fixedly connected to an oil wiping mechanism (10), a negative pressure device (11) is provided on the side of the base (12) away from the pipe clamp box (1), and the end of the connecting pipe (115) is sealed to the metal conductive pipe. The oiling mechanism (10) is configured to make the stop (103) centrifugal motion when rotating, and cooperate with the oil delivery mechanism (9) to pressurize and deliver the lubricant into the sliding groove (102), and then apply the lubricant to the outer surface of the metal conductive tube through the oiling ring (105). The negative pressure device (11) is configured to move the bellows (114) through the connecting pipe (115) to extend the bellows (114) and create a negative pressure inside the bellows (114). This causes the lubricant flowing between the outer surface of the metal conductive tube and the inner wall of the insulating tube to be adsorbed from the outside and move inward, filling the air gap between the metal tube and the insulating tube and reducing the air content inside the contact surface.

2. The insulated tubular busbar assembly device according to claim 1, characterized in that: The second clamp (3) includes a support plate (31). A first cylinder (33) and a self-centering clamp (32) are fixedly installed on the side of the support plate (31) away from the first clamp (2). The self-centering clamp (32) is driven by the first cylinder (33) to clamp the metal conductive tube. An adjustable height support roller (34) is threaded on the side of the sliding seat away from the first clamp (2).

3. The insulated tubular busbar assembly device according to claim 1, characterized in that: The oiling mechanism (10) includes a rotating ring (101), a sliding groove (102) is provided inside the rotating ring (101), a stop block (103) is slidably connected to the inner wall of the sliding groove (102) by a return spring (104), an oiling ring (105) is fixedly connected to the inner wall of the rotating ring (101), and a driven gear (106) is fixedly connected to the outer surface of the rotating ring (101).

4. The insulated tubular busbar assembly device according to claim 1, characterized in that: The oil delivery mechanism (9) includes a support ring (91) fixedly connected to the rotating ring (101). The support ring (91) has an oil delivery groove (92) and an oil outlet groove (93) inside. The oil delivery groove (92) is connected to the stop block (103) through the oil outlet groove (93). A one-way valve is provided inside the oil outlet groove (93).

5. The insulated tubular busbar assembly device according to claim 1, characterized in that: The negative pressure device (11) includes a support base (111), a fixed plate (112) is fixedly connected to the upper surface of the support base (111), a movable plate (113) is slidably connected to the upper surface of the support base (111), a bellows (114) is provided between the fixed plate (112) and the movable plate (113), a connecting pipe (115) is fixedly connected to the side surface of the movable plate (113), a rubber ring (116) is provided on the outer surface of the connecting pipe (115), and a push plate (118) is slidably connected to the upper surface of the support base (111) through a second cylinder (117).

6. The insulated tubular busbar assembly device according to claim 1, characterized in that: The inner wall of the pipe clamp box (1) is provided with a motor (5), and the output end of the motor (5) is fixedly connected to a transmission component (6). The transmission component (6) is a combination of a ball screw segment and a cylindrical segment.

7. An insulated tubular busbar assembly device according to claim 6, characterized in that: The transmission component (6) is rotatably connected to the inner wall of the base (12), and the ball screw section of the transmission component (6) is screwed into the first clamp (2).

8. An insulated tubular busbar assembly device according to claim 6, characterized in that: The outer surface of the cylindrical section of the transmission component (6) is fixedly connected to a drive gear (7), and the drive gear (7) meshes with the driven gear (106).

9. An insulated tubular busbar assembly device according to claim 2, characterized in that: The self-centering clamp (32) includes one active jaw (321) and three driven jaws (322). The active jaw (321) is rotatably connected to the output end of the first cylinder (33), and adjacent jaws are connected by a connecting rod (323).

10. An insulated tubular busbar assembly device according to claim 4, characterized in that: The pipe clamp box (1) is equipped with a conduit (13) inside. The upper end of the conduit (13) is fixedly connected to the oil outlet end of the external lubricant storage tank, and the lower end of the conduit (13) is connected to the oil delivery tank (92). A control valve is provided on the oil outlet of the lubricant storage tank.

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