Through-type disconnectable busbar suspension device

Abstract

A through-type disconnectable busbar hanging device, wherein the movable busbar is hung on a transmission device, and the transmission device is fixedly hung below the top wall of a tunnel entrance; the two ends of the movable busbar are fixedly connected with a first slide rail and a third slide rail; the second slide rail is slidably connected to the inner side surface of the first slide rail, and the fourth slide rail is slidably connected to the inner side surface of the third slide rail; parallel guide seats are fixed on the top surfaces of the first slide rail, the second slide rail, the third slide rail, and the fourth slide rail, and a guide rod is installed on one side of the parallel guide seat, and a circular through hole is provided on the other side; the transmission device drives the conduit to move along the line direction, and drives the movable busbar to move along the line direction, thereby separating the first slide rail from the second slide rail, and the third slide rail from the fourth slide rail, and the guide rod is disengaged from the circular through hole of the parallel guide seat on the opposite side, and drives the conduit to rotate, driving the movable busbar to rotate upward, so as to meet the rapid closing application requirements of double-opening and single-opening civil defense doors.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit rigid suspension systems, and in particular to a through-type disconnectable busbar suspension device. Background Art

[0002] With the rapid development of urban rail transit construction in my country, rigid suspension contact network has been widely adopted. Rigid suspension contact network is an urban rail transit power supply system composed of continuously erected and interconnected busbars. It is an important equipment for urban rail transit vehicle power supply, and its quality directly affects the operation of locomotives. Modern urban subway tunnels take into account civil air defense projects. Due to the influence of the continuous erection of rigid contact network, it has become a problem to close the civil air defense door in a timely and effective manner. In the urban rail transit lines that have been opened, four types of methods are usually used to solve the problem of closing the civil air defense door: "small anchor section detachable busbar", "through type detachable busbar", "electrically disconnectable busbar connector device", and "double small anchor section pressure-release rigid suspension device". The first two methods cannot meet the requirements of instantaneous disconnection. Before closing the civil air defense door, special personnel need to enter the tunnel to remove a section of the busbar at the civil air defense door from the entire contact network system. When encountering special circumstances, personnel cannot enter the tunnel for disassembly. Even if they can enter the tunnel, the disassembly is time-consuming and laborious due to structural problems, and the civil air defense door cannot be closed in time. The existing electric disconnectable bus connector device can be quickly disconnected through remote operation, and the middle bus will not fall within the closing range of the civil air defense door, with good airtightness, but the bus disconnection distance is short; the double small anchor section pressure-release rigid suspension device uses the gravity of the civil air defense door to automatically trigger the separation and displacement of the anchor sections, which can effectively ensure that the civil air defense door is closed quickly and smoothly. The above two automatic disconnection forms can only meet the requirements of lifting civil air defense doors, and cannot meet the requirements of rapid closing applications of double-opening and single-opening civil air defense doors. Summary of the invention

[0003] The present invention provides a through-type disconnectable busbar suspension device, which adopts an automatic disconnection form to meet the application requirements of rapid closing of double-opening and single-opening civil air defense doors.

[0004] The technical solution adopted by the present invention is: a through-type disconnectable busbar hanging device, comprising a mobile busbar, the mobile busbar is hung on a transmission device through a busbar hanging device, and the transmission device is fixedly hung below the top wall of a tunnel opening; the left end of the mobile busbar is fixedly docked with a first slide rail, and the right end is fixedly docked with a third slide rail; and the lower ends of the outer side surfaces of the first slide rail and the third slide rail are provided with contact line slots throughout the length, and the contact line slots correspond to the contact line slots at the lower end of the mobile busbar connected thereto;

[0005] A second slide rail is slidably connected to the inner side surface of the first slide rail, and the outer end of the second slide rail is fixedly connected to the left bus, and the lower end of the outer side surface of the second slide rail has a contact line slot, and the contact line slot corresponds to the contact line slot at the lower end of the left bus connected thereto; parallel guide supports are fixed on the top surfaces of the first and second slide rails, and a guide rod is installed on one side of the parallel guide support, and a circular through hole is provided on the other side and is located on the top surface of the opposite slide rail; when the first and second slide rails are close to each other and connected together, the guide rod follows the movement of the two slide rails and then penetrates into the circular through hole of the opposite parallel guide support; when the first and second slide rails are away from each other and separated, the guide rod follows the movement of the two slide rails and then escapes from the circular through hole of the opposite parallel guide support;

[0006] A fourth slide rail is slidably connected to the inner side surface of the third slide rail, and the outer end of the third slide rail is fixedly connected to the right bus, and the lower end of the outer side surface of the fourth slide rail has a contact line slot, and the contact line slot corresponds to the contact line slot at the lower end of the right bus connected thereto; parallel guide supports are fixed on the top surfaces of the third and fourth slide rails, and a guide rod is installed on one side of the parallel guide support, and a circular through hole is provided on the other side and is located on the top surface of the opposite slide rail; when the third and fourth slide rails move away from each other and are connected together, the guide rod follows the movement of the two slide rails and then penetrates into the circular through hole of the opposite parallel guide support; when the third and fourth slide rails move close to each other and separate, the guide rod follows the movement of the two slide rails and then escapes from the circular through hole of the opposite parallel guide support;

[0007] The transmission device comprises a lead screw, a lead screw nut, a guide tube and a motor. The lead screw nut is sleeved on one end of the guide tube and fixedly connected to the guide tube. The lead screw is inserted into the guide tube and threadedly connected to the lead screw nut. The outer end surface of the lead screw nut has a ratchet groove, and a ratchet gear sleeve that can mesh with the ratchet groove is fixed on the lead screw. The lead screw is coaxially connected to the main shaft of the motor.

[0008] The conduit and the motor are fixedly suspended below the top wall of the tunnel through a fixing device; the movable bus is fixedly suspended below the conduit through a pair of bus suspension devices, and the motor drives the lead screw to rotate through the lead screw nut to drive the conduit to move along the line direction, and drives the movable bus to move along the line direction, thereby making the first slide rail and the second slide rail move away from each other and separate, the third slide rail and the fourth slide rail move closer to each other and separate, and the guide rod is disengaged from the circular through hole of the parallel guide support on the opposite side; when the ratchet gear sleeve is engaged with the ratchet groove, the lead screw drives the lead screw nut through the ratchet gear sleeve to drive the conduit to rotate, and drives the movable bus and the separated first slide rail and third slide rail to rotate upward, so that the left bus and the right bus are disconnected.

[0009] A spring contact finger is embedded in the circular through hole, and the guide rod penetrates into the spring contact finger.

[0010] The top cross-section of the outer ends of the first and third slide rails is the same as the top cross-section of the mobile bus, and is respectively connected and fixed to the two ends of the mobile bus through the bus external joints; the top cross-section of the outer end of the second slide rail is the same as the top cross-section of the left bus, and is connected and fixed to the left bus through the bus external joint; the top cross-section of the outer end of the fourth slide rail is the same as the top cross-section of the right bus, and is connected and fixed to the right bus through the bus external joint.

[0011] The inner sides of the first slide rail, the second slide rail, the third slide rail and the fourth slide rail are all provided with slideways and guide rails along the line direction, and the two slideways and two guide rails on the inner sides of the first slide rail and the second slide rail are arranged alternately up and down, and the two slideways and two guide rails on the inner sides of the third slide rail and the fourth slide rail are arranged alternately up and down, and the guide rails are respectively inserted into the slideways on the opposite sides to slide and connect the first slide rail and the second slide rail together so that they can slide freely relative to each other.

[0012] The transmission device is fixedly suspended below the top wall of the tunnel by a fixing device; the fixing device includes a first hanging column, a second hanging column, and a third hanging column, the lower ends of the first hanging column and the second hanging column are fixed with a catheter seat, the lower end of the third hanging column is fixed with a motor seat, and the tops of the first hanging column, the second hanging column, and the third hanging column are all fixed on the top wall of the tunnel; the catheter is horizontally inserted in the catheter seat, and the motor is fixed on the motor seat.

[0013] The busbar hanging device comprises a hanging seat, the top of which is fixedly connected to the conduit by a U-bolt pair, the bottom of which is connected to an insulator which can be adjusted up and down, the lower end of which is fixedly connected to a busbar clamp, and the movable busbar is hung on the busbar clamp.

[0014] The slideway is a circular groove, and a wear-resistant, self-lubricating sleeve is embedded in the slideway; the guide rail is a circular guide shaft, and the outer diameter of the circular guide shaft is matched with the inner diameter of the sleeve.

[0015] A nylon guide sleeve is embedded in the catheter seat, and the catheter is adapted to be inserted in the nylon guide sleeve and can slide freely.

[0016] A limiting plate is also fixed to the lower end of the first suspension column.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a sliding connection between two left and right slide rails, and realizes the connection and disconnection of the rigid contact network by moving the movable busbar along the line direction for a certain distance. At the same time, the parallel guide supports installed on the top surfaces of the left and right slide rails realize the function of connecting and disconnecting the electrical connection of the busbar, which has the advantages of small contact line spacing and small height difference. The electrical connection adopts a sliding rigid connection between the guide rod and the parallel guide support, and the electrical connection is reliable through the spring contact finger, which meets the disconnection requirements and avoids the disadvantages of the flexible electrical connection being easy to damage and unable to be disconnected.

[0019] 2. In the transmission device of the present invention, the ratchet groove on the end face of the lead screw nut meshes with the ratchet gear sleeve fixed on the lead screw and rotates coaxially. When rotating forward, the meshing is fast and accurate to achieve the upward swing of the mobile bus. When rotating reversely, the mobile bus is quickly and smoothly disengaged to achieve the downward swing of the mobile bus, so that the mobile bus returns to the initial state. The hidden danger of biting is avoided. A limit device is provided to prevent the mobile bus from swinging upward excessively and hitting the tunnel wall, and swinging downward excessively, and the impact caused by the impact causes damage to the connecting parts at both ends.

[0020] 3. The overall structure of the present invention is simple, and the space occupied is small. It can meet the requirements of high-speed train operation, and can quickly disconnect the busbar, so that the double-opening and single-opening civil air defense doors can be quickly closed. It can also be remotely controlled, without the need for staff to enter the site to close, which is safe and reliable.

[0021] 4. If the present invention cannot use the motor transmission due to power failure or other faults, the handle can be connected to the tail of the motor and the bus can be disconnected manually, which has a double insurance function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention in a disconnected state;

[0023] Figure 2 It is a schematic diagram of the transmission structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the connection state of the first slide rail and the second slide rail of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the third slide rail and the fourth slide rail in the connection state of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the fixing device of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the adjustable busbar suspension device of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the lead screw nut and the ratchet gear sleeve in the transmission device of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the first slide rail of the present invention;

[0030] Fig. 9 is a schematic diagram of the second slide rail structure of the present invention;

[0031] Fig.10 is a schematic diagram of the third slide rail structure of the present invention;

[0032] Fig.11 is a schematic diagram of the fourth slide rail structure of the present invention;

[0033] Fig.12 It is a schematic diagram of the structure of the first slide rail and the second slide rail of the present invention in a separated state;

[0034] Fig.13 It is a schematic structural diagram of the third slide rail and the fourth slide rail of the present invention in a separated state;

[0035] Fig.14 It is a cross-sectional view of the first slide rail and the second slide rail in a connected state and the third slide rail and the fourth slide rail in a connected state of the present invention;

[0036] Fig.15 It is a schematic diagram of the use state of the present invention after the civil air defense door is opened;

[0037] Fig.16 It is a schematic diagram of the use state of the present invention after the civil air defense door is closed. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-16 The present invention is described in detail with specific embodiments.

[0039] A through-type disconnectable busbar suspension device comprises a movable busbar 1, wherein the movable busbar 1 is suspended on a transmission device 3 through a busbar suspension device 2, and the transmission device 3 is fixedly suspended below the top wall of a tunnel opening; the left end of the movable busbar 1 is fixedly docked with a first slide rail 4, and the right end is fixedly docked with a third slide rail 6; and the lower ends of the outer side surfaces of the first slide rail 4 and the third slide rail 6 are provided with a contact line slot 13 through the length, and the contact line slot 13 corresponds to the contact line slot at the lower end of the movable busbar 1 connected thereto;

[0040] A second slide rail 5 is slidably connected to the inner side surface of the first slide rail 4, and the outer end of the second slide rail 5 is fixedly connected to the left bus 8, and the lower end of the outer side surface of the second slide rail 5 has a contact line slot 13, and the contact line slot 13 corresponds to the contact line slot at the lower end of the left bus 8 connected thereto; parallel guide supports 9 are fixed on the top surfaces of the first and second slide rails 4 and 5, and a guide rod 10 is installed on one side of the parallel guide support 9, and a circular through hole 11 is provided on the other side and is located on the top surface of the opposite slide rail; when the first and second slide rails 4 and 5 are close to each other and connected together, the guide rod 10 follows the movement of the two slide rails and then penetrates into the circular through hole 11 of the opposite parallel guide support 9; when the first and second slide rails 4 and 5 are away from each other and separated, the guide rod 10 follows the movement of the two slide rails and then escapes from the circular through hole 11 of the opposite parallel guide support 9;

[0041] The fourth slide rail 7 is slidably connected to the inner side surface of the third slide rail 6, and the outer end of the third slide rail 6 is fixedly connected to the right bus 12, and the lower end of the outer side surface of the fourth slide rail 7 has a contact line slot 13, and the contact line slot 13 corresponds to the contact line slot at the lower end of the right bus 12 connected thereto; parallel guide supports 9 are fixed on the top surfaces of the third and fourth slide rails 6 and 7, and a guide rod 10 is installed on one side of the parallel guide support 9, and a circular through hole 11 is provided on the other side and is located on the top surface of the opposite slide rail; when the third and fourth slide rails 6 and 7 move away from each other and are connected together, the guide rod 10 follows the movement of the two slide rails and then penetrates into the circular through hole 11 of the opposite parallel guide support 9; when the third and fourth slide rails 6 and 7 move close to each other and separate, the guide rod 10 follows the movement of the two slide rails and then escapes from the circular through hole 11 of the opposite parallel guide support 9;

[0042] The transmission device 3 includes a lead screw 3-1, a lead screw nut 3-2, a guide tube 3-3 and a motor 3-6. The lead screw nut 3-2 is sleeved on one end of the guide tube 3-3 and fixedly connected to the guide tube 3-3. The lead screw 3-1 is inserted into the guide tube 3-3 and threadedly connected to the lead screw nut 3-2. The outer end surface of the lead screw nut 3-2 has a ratchet groove 3-4. A ratchet tooth sleeve 3-5 that can mesh with the ratchet groove 3-4 is fixed on the lead screw 3-1. The lead screw 3-1 is coaxially connected to the main shaft of the motor 3-6.

[0043] The conduit 3-3 and the motor 3-6 are fixedly suspended below the top wall of the tunnel through a fixing device 15; the movable bus 1 is fixedly suspended below the conduit 3-3 through a pair of bus suspension devices 2, and the motor 3-6 drives the lead screw 3-1 to rotate and drives the conduit 3-3 to move along the line direction through the lead screw nut, and drives the movable bus 1 to move along the line direction, thereby making the first slide rail 4 and the second slide rail 5 move away from each other and separate, the third slide rail 6 and the fourth slide rail 7 approach each other and separate, and the guide rod 10 disengages from the circular through hole 11 of the opposite parallel guide support 9; when the ratchet gear sleeve 3-5 is engaged with the ratchet groove 3-4, the lead screw 3-1 drives the lead screw nut 3-2 through the ratchet gear sleeve 3-5 to drive the conduit 3-3 to rotate, and drives the movable bus 1 and the separated first slide rail 4 and third slide rail 6 to rotate upward, so that the left bus 8 and the right bus 12 are disconnected. A spring contact finger 19 is embedded in the circular through hole 11 , and the guide rod 10 penetrates into the spring contact finger 19 .

[0044] The top cross-section of the outer ends of the first slide rail 4 and the third slide rail 6 is the same as the top cross-section of the mobile bus 1, and is respectively connected and fixed to the two ends of the mobile bus 1 through the bus outer joint 18; the top cross-section of the outer end of the second slide rail 5 is the same as the top cross-section of the left bus 8, and is connected and fixed to the left bus 8 through the bus outer joint 18; the top cross-section of the outer end of the fourth slide rail 7 is the same as the top cross-section of the right bus 12, and is connected and fixed to the right bus 12 through the bus outer joint 18;

[0045] In one embodiment, the inner side surfaces of the first slide rail 4, the second slide rail 5, the third slide rail 6, and the fourth slide rail 7 are all provided with slideways 16 and guide rails 17 along the line direction, and the two slideways 16 and two guide rails 17 on the inner side surfaces of the first slide rail 4 and the second slide rail 5 are arranged alternately up and down, and the two slideways 16 and two guide rails 17 on the inner side surfaces of the third slide rail 6 and the fourth slide rail 7 are arranged alternately up and down, and the guide rails 17 are respectively inserted into the opposite slideway 16 to slide and connect the first slide rail 4 and the second slide rail 5 together and can slide freely relative to each other. The slideway 16 is a circular groove, and a wear-resistant, self-lubricating sleeve 14 is embedded in the slideway 16; the guide rail 17 is a circular guide shaft, and the outer diameter of the circular guide shaft is adapted to the inner diameter of the sleeve 14.

[0046] The transmission device 3 is fixedly suspended below the top wall of the tunnel entrance by a fixing device 15; the fixing device 15 includes a first hanging column 15-1, a second hanging column 15-2, and a third hanging column 15-3. The lower ends of the first hanging column 15-1 and the second hanging column 15-2 are fixed with a conduit seat 15-4, and the lower end of the third hanging column 15-3 is fixed with a motor seat 15-5. The tops of the first hanging column 15-1, the second hanging column 15-2, and the third hanging column 15-3 are all fixed on the top wall of the tunnel; the conduit 3-3 is horizontally inserted in the conduit seat 15-4, and the motor 3-6 is fixed on the motor seat 15-5. A nylon guide sleeve 15-6 is embedded in the conduit seat 15-4, and the conduit 3-3 is adapted to be inserted in the nylon guide sleeve 15-6 and can slide freely. An "L"-shaped limit plate 15-7 is also fixed to the lower end of the first hanging column 15-1.

[0047] The busbar hanging device 2 comprises a hanging seat 2-1, the top of which is fixedly connected to the guide tube 3-3 by a U-bolt pair, the bottom of which is connected to an insulator 2-3 which can be adjusted up and down, the lower end of which is fixedly connected to a busbar clamp 2-2, and the movable busbar 1 is hung on the busbar clamp 2-2.

[0048] Working principle: When the civil air defense door needs to be closed, the motor 3-6 drives the conduit 3-3 to move to the right, thereby driving the mobile bus 1 to move to the right along the line direction, so that the first slide rail 4 connected to the left end of the mobile bus 1 is disengaged from the second slide rail 5, and the third slide rail 6 and the fourth slide rail 7 at the right end are separated to the left and right, and the guide rod 10 is disengaged from the circular through hole 11 of the opposite parallel guide support 9; when the conduit 3-3 moves to the right so that the ratchet gear sleeve 3-5 is engaged with the ratchet groove 3-4, the screw 3-1 drives the screw nut 3-2 through the ratchet gear sleeve 3-5 to drive the conduit 3-3 to rotate counterclockwise 90 degrees, and drives the mobile bus 1 and the separated first slide rail 4 and third slide rail 6 to rotate upward counterclockwise 90 degrees through the conduit 3-3, and the motor 3-6 stops working, splitting the height of the civil air defense door, making room for the closing of the civil air defense door, and ensuring the smooth closing of the double-opening or single-opening civil air defense door.

[0049] When the air defense door is opened, the motor 3-6 reverses to make the ratchet gear sleeve 3-5 and the ratchet groove 3-4 disengage quickly and smoothly, and the mobile bus 1 and the separated first slide rail 4 and third slide rail 6 rotate 90 degrees clockwise downward under the action of their own weight and return to the initial state. An "L"-shaped limit plate 15-7 is provided to prevent the mobile bus 1 from swinging upward or downward excessively.

[0050] The present invention can realize the rapid closing of the civil air defense door by remotely controlling the motor 3-6, without the need for staff to enter the site for closing, which is safe and reliable. If the motor transmission cannot be used due to power failure or other faults, the handle can be connected to the tail of the motor and the bus can be disconnected manually, which has a double insurance function.

[0051] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A through-type disconnectable busbar suspension device, characterized in that: The invention comprises a movable busbar (1), wherein the movable busbar (1) is suspended on a transmission device (3) via a busbar suspension device (2), and the transmission device (3) is fixedly suspended below the top wall of a tunnel opening; the left end of the movable busbar (1) is fixedly docked with a first slide rail (4), and the right end is fixedly docked with a third slide rail (6); and the lower ends of the outer side surfaces of the first slide rail (4) and the third slide rail (6) are provided with contact line slots (13) throughout their length, and the contact line slots (13) correspond to the contact line slots at the lower ends of the movable busbars (1) connected thereto; A second slide rail (5) is slidably connected to the inner side surface of the first slide rail (4), and the outer end of the second slide rail (5) is fixedly connected to the left bus (8). The lower end of the outer side surface of the second slide rail (5) has a contact line slot (13) throughout the entire length, and the contact line slot (13) corresponds to the contact line slot at the lower end of the left bus (8) connected thereto; parallel guide supports (9) are fixed on the top surfaces of the first slide rail (4) and the second slide rail (5), and a guide is installed on one side of the parallel guide support (9). The flow rod (10) has a circular through hole (11) on the other side and is located on the top surface of the opposite slide rail; when the first slide rail (4) and the second slide rail (5) are close to each other and connected together, the flow guide rod (10) moves with the two slide rails and then penetrates into the circular through hole (11) of the opposite parallel flow guide support (9); when the first slide rail (4) and the second slide rail (5) move away from each other and separate, the flow guide rod (10) moves with the two slide rails and then escapes from the circular through hole (11) of the opposite parallel flow guide support (9); The inner side surface of the third slide rail (6) is slidably connected to a fourth slide rail (7), and the outer end of the third slide rail (6) is fixedly connected to the right bus bar (12), and the lower end of the outer side surface of the fourth slide rail (7) has a contact line slot (13) throughout the entire length, and the contact line slot (13) corresponds to the contact line slot at the lower end of the right bus bar (12) connected thereto; the top surfaces of the third slide rail (6) and the fourth slide rail (7) are both fixed with parallel flow guide supports (9), and one side of the parallel flow guide supports (9) is installed The guide rod (10) has a circular through hole (11) on the other side and is located on the top surface of the opposite slide rail; when the third slide rail (6) and the fourth slide rail (7) move away from each other and are connected together, the guide rod (10) moves with the two slide rails and then penetrates into the circular through hole (11) of the opposite parallel guide support (9); when the third slide rail (6) and the fourth slide rail (7) move toward each other and separate, the guide rod (10) moves with the two slide rails and then escapes from the circular through hole (11) of the opposite parallel guide support (9); The transmission device (3) comprises a lead screw (3-1), a lead screw nut (3-2), a guide tube (3-3) and a motor (3-6); the lead screw nut (3-2) is sleeved on one end of the guide tube (3-3) and fixedly connected to the guide tube (3-3); the lead screw (3-1) is inserted into the guide tube (3-3) and threadedly connected to the lead screw nut (3-2); the lead screw nut (3-2) has a ratchet groove (3-4) on its outer end surface; a ratchet tooth sleeve (3-5) that can mesh with the ratchet groove (3-4) is fixed on the lead screw (3-1); the lead screw (3-1) is coaxially connected to the main shaft of the motor (3-6); The guide tube (3-3) and the motor (3-6) are fixedly suspended below the tunnel top wall via a fixing device (15); the movable busbar (1) is fixedly suspended below the guide tube (3-3) via a pair of busbar suspension devices (2); the motor (3-6) drives the lead screw (3-1) to rotate through the lead screw nut to drive the guide tube (3-3) to move along the line direction, and drives the movable busbar (1) to move along the line direction, thereby causing the first slide rail (4) and the second slide rail (5) to move away from each other and separate, and the third slide rail (6 ), and the fourth slide rail (7) approach each other and separate, and the guide rod (10) escapes from the circular through hole (11) of the opposite parallel guide support (9); when the ratchet gear sleeve (3-5) is meshed with the ratchet groove (3-4), the lead screw (3-1) drives the lead screw nut (3-2) through the ratchet gear sleeve (3-5) to drive the guide tube (3-3) to rotate, driving the movable bus (1) and the separated first slide rail (4) and the third slide rail (6) to rotate upward, so that the left bus (8) and the right bus (12) are disconnected; The transmission device (3) is fixedly suspended below the tunnel top wall via a fixing device (15); the fixing device (15) comprises a first suspension column (15-1), a second suspension column (15-2), and a third suspension column (15-3); the lower ends of the first suspension column (15-1) and the second suspension column (15-2) are fixed with a guide tube seat (15-4); the lower end of the third suspension column (15-3) is fixed with a motor seat (15-5); the tops of the first suspension column (15-1), the second suspension column (15-2), and the third suspension column (15-3) are fixed on the tunnel top wall; the guide tube (3-3) is horizontally inserted into the guide tube seat (15-4), and the motor (3-6) is fixed on the motor seat (15-5); The busbar suspension device (2) comprises a suspension seat (2-1), the top of the suspension seat (2-1) being fixedly connected to a guide tube (3-3) via a U-bolt pair, the bottom of the suspension seat (2-1) being connected to an insulator (2-3) that can be adjusted up and down, the lower end of the insulator (2-3) being fixedly connected to a busbar wire clamp (2-2), and the movable busbar (1) being suspended on the busbar wire clamp (2-2).

2. A through-type disconnectable busbar suspension device according to claim 1, characterized in that: A spring contact finger (19) is embedded in the circular through hole (11), and the flow guide rod (10) penetrates into the spring contact finger (19).

3. A through-type disconnectable busbar suspension device according to claim 1, characterized in that: The top cross-section of the outer ends of the first slide rail (4) and the third slide rail (6) is the same as the top cross-section of the movable bus (1), and is respectively connected and fixed to the two ends of the movable bus (1) via bus outer joints (18); the top cross-section of the outer end of the second slide rail (5) is the same as the top cross-section of the left bus (8), and is connected and fixed to the left bus (8) via the bus outer joint (18); the top cross-section of the outer end of the fourth slide rail (7) is the same as the top cross-section of the right bus (12), and is connected and fixed to the right bus (12) via the bus outer joint (18).

4. A through-type disconnectable busbar suspension device according to claim 1, 2 or 3, characterized in that: The inner side surfaces of the first slide rail (4), the second slide rail (5), the third slide rail (6) and the fourth slide rail (7) are all provided with slideways (16) and guide rails (17) along the line direction, and the two slideways (16) and the two guide rails (17) on the inner side surfaces of the first slide rail (4) and the second slide rail (5) are arranged alternately up and down, and the two slideways (16) and the two guide rails (17) on the inner side surfaces of the third slide rail (6) and the fourth slide rail (7) are arranged alternately up and down, and the guide rails (17) are respectively inserted into the slideways (16) on the opposite sides, so that the first slide rail (4) and the second slide rail (5) are slidably connected together and can slide freely relative to each other.

5. A through-type disconnectable busbar suspension device according to claim 4, characterized in that: The slideway (16) is a circular groove, and a wear-resistant, self-lubricating sleeve (14) is embedded in the slideway (16); the guide rail (17) is a circular guide shaft, and the outer diameter of the circular guide shaft is matched with the inner diameter of the sleeve (14).

6. A through-type disconnectable busbar suspension device according to claim 1, characterized in that: A nylon guide sleeve (15-6) is embedded in the catheter seat (15-4), and the catheter (3-3) is adapted to be inserted into the nylon guide sleeve (15-6) and can slide freely.

7. A through-type disconnectable busbar suspension device according to claim 1, characterized in that: A limiting plate (15-7) is also fixed to the lower end of the first suspension column (15-1).

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