A single-track turnout rail change system

Abstract

The present invention relates to the technical field of rail transit, and specifically, it is a monorail suspended rail turnout rail-changing system. It includes an incoming rail, an outgoing rail, a connecting frame, and a rail-changing assembly. Both the incoming rail and the outgoing rail are I-shaped rails. It also includes a rotating rail for connecting the incoming rail and the outgoing rail. One incoming rail corresponds to one rotating rail hinged thereto, and the rotating rail corresponds to no less than two outgoing rails; the control unit is electrically connected to the driving unit; under the control of the control unit, the driving unit drives the trolley to move reciprocally along the slideway, and the rotating rail completes the docking with the corresponding outgoing rail, thereby realizing rail change. By setting a rotating rail hinged to the outgoing rail, the influence caused by forced dragging during rail change is avoided; by driving the rotating rail by the driving unit to realize mechanical rail change, the reliability and service life of the rail-changing system are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and specifically to a monorail suspended turnout rail change system. Technical Background

[0002] In two patents of domestic patents 200510007655.2 and 201120001241.X, the steering scheme of a suspended monorail vehicle is disclosed. This scheme steers by changing the running direction of the vehicle. In the patents, it is described that two driving wheels belong to coaxial drive, and during steering, differential drive of the two wheels cannot be achieved, resulting in the phenomenon of rail gnawing when the vehicle steers and the vehicle cannot steer smoothly. In addition, the vehicle steering guide device forcibly drags the vehicle to steer, which causes a large stress impact on the mechanical structure. Long-term operation will cause the track to deform. Such a steering system has relatively high requirements for the electrical control accuracy part, large engineering investment, lack of stability and reliability, high failure rate, and certain potential safety hazards.

[0003] Therefore, it is an urgent matter to develop a safe and reliable suspended monorail rail change system. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a turnout rail change system.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A single-track turnout rail change system includes an incoming track, an outgoing track, a connecting frame, and a rail change component. Both the incoming track and the outgoing track are I-shaped tracks. The I-shaped track is provided with an upper rail plate, a lower rail plate, and a track vertical plate. The incoming track and the outgoing track are fixedly suspended at the bottom of the connecting frame, and the top of the connecting frame is fixedly connected to a track hanger arranged according to the planned line. It also includes a rotating track for connecting the incoming track and the outgoing track. One incoming track corresponds to one rotating track hinged to it, and the rotating track corresponds to no less than two outgoing tracks. The rail change component includes a trolley, a slideway, a control unit, and a driving unit. The slideway and the driving unit are respectively fixed to the same track hanger. The trolley is slidably connected to the slideway, and the trolley is fixedly connected to the driving unit. A connecting column is arranged at the lower part of the trolley, and the lower end of the connecting column is fixedly connected to the upper rail plate of the rotating track. The control unit is electrically connected to the driving unit. Under the control of the control unit, the driving unit drives the trolley to reciprocate along the slideway, and the rotating track completes the docking with the corresponding outgoing track, thereby realizing rail change.

[0007] Compared with the prior art, the present invention has the beneficial effects that by setting a rotating track hinged to the outgoing track, the influence caused by forced dragging during rail change is avoided; by driving the rotating track by the driving unit to realize mechanical rail change, the reliability and service life of the rail change system are greatly improved.

[0008] The following improvements can also be made to the present invention, and the improvement solutions are as follows:

[0009] Further, a first arc groove, a second arc groove and a first flange are provided on the longitudinal end surface of the articulated end of the incoming track; the first arc groove is at the center of the track vertical plate, and the first arc groove penetrates through the upper track plate and the track vertical plate; the second arc groove is provided at the connection between the lower track plate and the track vertical plate, and the depth of the second arc groove is equal to half of the thickness of the lower track plate; the first flange is provided on the lower track plate, the first flange is coaxially arranged with the first arc groove, and the radius of the first flange is equal to the radius of the first arc groove, and the upper end surface of the first flange is coplanar with the bottom surface of the second arc groove; a third arc groove and a second flange are provided at the articulated end of the rotating track, the third arc groove is separated into upper and lower parts by the second flange, and the radius of the third arc groove is equal to the radius of the first arc groove; the second flange is provided in the upper half of the lower track plate of the rotating track, and its thickness is equal to the depth of the second arc groove at the articulated end of the incoming track; on both sides of the third arc groove of the rotating track are symmetrically arranged vertical planes at a certain angle to the length direction of the rotating track; at the articulated part of the incoming track and the rotating track, the first arc groove of the incoming track corresponds to the upper half of the third arc groove of the rotating track, and a steel shaft with a threaded hole at the bottom is provided between them, the second flange is matched with the second arc groove, and the first flange is matched with the lower half of the third arc groove; through articulated holes are respectively provided at the centers of the first flange and the second flange; a precision reamed hole screw is used as the articulated shaft of the first flange and the second flange, and the threaded end of the precision reamed hole screw is connected to the steel shaft, and the steel shaft serves as the articulated shaft of the upper parts of the incoming track and the outgoing track.

[0010] Further, the free end of the rotating track is butted against one end of the outgoing track 2, and a certain expansion gap is left at the butting part of the rotating track and the outgoing track; the end surface of the free end of the rotating track is a convex arc surface, and the end surface of the butting end of the outgoing track and the rotating track is a concave arc surface, and the virtual arcs where the convex arc surface and the concave arc surface are located are concentric circles with the articulated end of the rotating track as the center.

[0011] Further, a lapping notch is provided at the bottom of the lower track plate at the free end of the rotating track, and the depth of the lapping notch is equal to half of the thickness of the lower track plate; a lapping part matched with the lapping notch of the lower bottom plate of the rotating track is provided on the lower track plate at the butting end of the outgoing track and the rotating track; the connecting ends of the rotating track and the outgoing track form a complementary shape, and a lapping structure is formed by the lapping notch and the lapping part.

[0012] Further, the driving unit of the orbit-changing assembly is provided with a mounting seat, a driving motor, a driving rod, a return spring and a fixing frame. The mounting seat is provided with a first vertical plate and a second vertical plate. One end of the first vertical plate is fixedly connected to one side surface of the second vertical plate, and the upper and lower ends of the first vertical plate and the second vertical plate are aligned. One end of the driving rod is provided with a connecting portion for connecting the trolley. A spring baffle is fixedly connected to the driving rod. The portion between the connecting portion of the driving rod and the spring baffle is provided as a rack, and the driving rod on the other side of the spring baffle is a cylindrical rod. The return spring is sleeved on the cylindrical rod, and one end of the return spring is connected to the spring baffle, and the other end is connected to the second vertical plate of the mounting seat. The output end of the driving motor is installed with a gear meshing with the rack. The driving motor is fixed on the first vertical plate of the mounting seat, and the output end and the motor body of the driving motor are located on both sides of the first vertical plate. The guide sleeve is fixedly installed on the second vertical plate of the mounting seat. The guide sleeve is coaxially arranged with the cylindrical rod of the driving rod, and the driving rod can smoothly slide in the guide sleeve under the action of the driving motor. The slide rail is fixed on one side of the output end of the driving motor on the first vertical plate of the mounting seat. One end of the slide rail is provided with a limit stop. A slide block is arranged on the slide rail, and the spring baffle is fixedly connected to the slide block. One end of the second vertical plate of the mounting seat is hinged to the fixing frame, and the upper end of the fixing frame is fixedly connected to the track hanger.

[0013] Further, the slideway is an arc-shaped slideway, and the arc where the slideway is located is a circle with the hinge end of the rotating rail as the center of the circle. The longitudinal section of the slideway is in a C shape, and the C-shaped opening of the slideway faces downward.

[0014] Further, the trolley is provided with traveling wheels, axles, a differential and a connecting column. The traveling wheels are installed at both ends of the axle. A differential is arranged in the middle of the axle. A connecting column is fixedly connected to the lower part of the axle where the differential is arranged. A hanging portion is arranged at the lower end of the connecting column. A connecting portion for fixedly connecting with the connecting end of the driving rod is arranged on the side wall of the connecting column.

[0015] Further, the trolley is provided with a walking disc, a rolling bearing, a mounting sleeve and a connecting column; one end of the mounting sleeve is provided with an end cover, and on the outer wall of the mounting sleeve at the lower end of the end cover, there are successively arranged a first boss, a second boss, a third boss and a fourth boss in the shape of a cylinder with a decreasing diameter; the rolling bearing is sleeved on the second boss of the mounting sleeve, and the diameter of the second boss is equal to the inner diameter of the rolling bearing; on the bottom of the walking disc, several steel balls are evenly arranged in the circumferential direction of the walking disc, and the steel balls are ball-jointed with the walking disc. The walking disc is sleeved on the third boss of the mounting sleeve, and the diameter of the third boss is equal to the inner diameter of the walking disc; a gland is sleeved on the fourth boss of the mounting sleeve, and the inner diameter of the gland is larger than the diameter of the fourth boss; the upper end of the connecting column is provided with a flange, the lower end is provided with a hanging part, and the main body of the connecting column is made of a circular steel pipe; the mounting sleeve is sleeved on the connecting column; bolt through holes corresponding to the flange at the upper end of the connecting column are respectively arranged on the walking disc, the mounting sleeve and the gland, and at these corresponding bolt holes, bolts and nuts are used to fixedly connect the walking disc, the mounting sleeve, the gland and the connecting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the top view of the present invention.

[0017] Figure 2 is the exploded view of the articulated end of the driving track and the rotating track of the present invention.

[0018] Figure 3 is the corresponding bottom view of the articulated end of the driving track and the rotating track of the present invention.

[0019] Figure 4 is the exploded perspective view of the docking end of the rotating track and the driving-out track of the present invention.

[0020] Figure 5 is the structural schematic diagram of the rail-changing assembly of the present invention.

[0021] Figure 6 is in Figure 5 is the top view of the rail-changing assembly of the present invention with the main view as the reference.

[0022] Figure 7 is the exploded perspective view of the second embodiment of the trolley in the rail-changing assembly of the present invention.

[0023] Figure 8 is the three-dimensional structure diagram of the mounting sleeve in the embodiment of the present invention.

[0024] Figure 9 is the top view of the mounting sleeve in the embodiment of the present invention.

[0025] Figure 10 is the corresponding Figure 9 A-A cross-sectional view in

[0026] In the figure: Incoming track 1; First arc groove 101; Second arc groove 102; First flange 103; Outgoing track 2; Lapping part 201; Concave arc surface 202; Rail-changing assembly 3; Trolley 301; Traveling wheel 3011; Axle 3012; Differential 3013; Connecting column 3014; Hanging part; Traveling disc 3015; Mounting disc 3016; First boss 301601; Second boss 301602; Third boss 301603; Fourth boss 301604; Rolling bearing 3017; Gland 3018; Rail-changing drive unit 302; Drive rod 3021; Spring plate 3022; Drive motor 3023; Mounting seat 3024; First vertical plate; Second vertical plate; Return spring 3025; Fixed bracket 3026; Guide sleeve 3027; Slide rail 3028; Slide block 3029; Slideway 303; Connecting frame 4; Rotating rail 5; Third arc groove 501; Second flange 502; Lapping notch 503; Steel shaft 6; Threaded hole 601; Tapped-hole screw 7. Detailed implementation mode

[0027] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0028] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0029] As Figure 1 shown, a single-track turnout rail-changing system provided by the present invention is composed of an incoming track 1, an outgoing track 2, a connecting frame 4, a rail-changing assembly 3, a rotating rail 5, etc.

[0030] Both the incoming track 1 and the outgoing track 2 are I-shaped tracks. The I-shaped track is provided with an upper rail plate, a lower rail plate and a track vertical plate. In the present invention, the surface for vehicle travel of the I-shaped track is the upper surface of the lower rail plate. The incoming track 1 and the outgoing track 2 are fixedly suspended at the bottom end of the connecting frame 4, and the top end of the connecting frame 4 is fixed to a track hanger arranged according to the planned line. The track hanger can be a double-column track hanger in the shape of a door; it can also be an inverted L-shaped track hanger.

[0031] One incoming track 1 corresponds to a rotating rail 5 hinged thereto. The rotating rail 5 corresponds to no less than two outgoing tracks 2; the upper surface of the lower rail plate of the rotating rail 5 at the hinge joint is coplanar with the upper surface of the lower rail plate of the incoming track 1; at the docking joint of the rotating rail 5 and the outgoing track 2, the upper surfaces of their lower rail plates are coplanar, which is also to minimize the bumps generated when the vehicle 301 passes through the rail-changing connection.

[0032] The rail-changing assembly 3 includes a trolley 301, a slideway 303, a control unit and a drive unit. The slideway 303 and the drive unit are respectively fixed to the same track hanger. The trolley 301 is slidably connected to the slideway 303, and the trolley 301 is fixedly connected to the drive unit.

[0033] A connecting column 3014 is provided at the lower part of the trolley 301. The lower end of the connecting column 3014 is fixedly connected to the upper rail plate of the rotating rail 5, and the connecting column 3014 and the rotating rail 5 are connected by welding. The control unit is electrically connected to the driving unit; under the control of the control unit, the driving unit drives the trolley 301 to reciprocate along the slideway 303, and the rotating rail 5 completes the docking with the corresponding driving-out rail 2, thereby realizing the rail change. According to the control of the control unit over the start-stop and movement direction of the driving unit, the precise docking of the rotating rail 5 and the driving-out rail 2 is realized.

[0034] Compared with the existing rail change technology, the advantages of the embodiment of the present invention are as follows: by providing the rotating rail 5 hinged to the driving-out rail 2, the influence caused by forced dragging during rail change is avoided; by driving the rotating rail 5 through the driving unit to realize mechanical rail change, the reliability and service life of the rail change system are greatly improved.

[0035] In order to further improve the reliability of the rail change system and be able to realize rail change more smoothly and without jamming, the embodiment of the present invention adopts the following preferred structure.

[0036] As a preferred structure, a first arc groove 101, a second arc groove 102 and a first flange 103 are provided on the longitudinal end surface of the hinged end of the driving-in rail 1. Both the first arc groove 101 and the second arc groove 102 are straight arc grooves with their axes along the vertical direction, and the side wall of the first flange 103 is an arc surface; the first arc groove 101 is provided at the center of the rail vertical plate, and the first arc groove 101 penetrates through the upper rail plate and the rail vertical plate; the second arc groove 102 is provided at the connection between the lower rail plate and the rail vertical plate, and the depth of the second arc groove 102 is equal to half of the thickness of the lower rail plate. The corresponding arc angles of the first arc groove 101 and the second arc groove 102 are both 180°.

[0037] The first flange 103 is provided on the lower rail plate. The first flange 103 is coaxially arranged with the first arc groove 101, and the radius of the first flange 103 is equal to the radius of the first arc groove 101. The upper end surface of the first flange 103 is coplanar with the bottom surface of the second arc groove 102. When the rotating rail 5 rotates relative to the driving-in rail 1, no large gap or unevenness will occur at the walking surface at the connection between the first flange 103 and the second arc groove 102, and the joint line of the walking surface here is an arc line, and no rail jamming phenomenon will occur when the wheels of the vehicle pass through.

[0038] The hinged end of the rotating rail 5 is provided with a third arc groove 501 and a second flange 502. The third arc groove 501 is separated into upper and lower parts by the second flange 502, and the radius of the third arc groove 501 is equal to that of the first arc groove 101. The second flange 502 is arranged in the upper half of the lower rail plate of the rotating rail 5, and its thickness is equal to the depth of the second arc groove 102 at the hinged end of the incoming rail 1. Since the vehicle described in the present invention takes the upper surface of the lower rail plate of the track as the running surface, under the condition of ensuring smooth rotation at the hinge between the incoming rail 1 and the rotating rail 5, the upper surfaces (i.e., the running surfaces) of the lower rail plates of the incoming rail 1 and the outgoing rail 2 at the hinge should be coplanar as much as possible. That is, the thickness of the second flange 502 is equal to the depth of the second arc groove 102 to ensure the flatness quality of the running surface at the hinge.

[0039] On both sides of the third arc groove 501 of the rotating rail 5 are symmetrically arranged vertical planes at a certain angle to the length direction of the rotating rail 5. The two sides of the vertical planes at a certain angle intercept the third arc groove 501 into an arc groove with an arc angle less than 180°, so that the rotating rail 5 and the incoming rail 1 can rotate at a certain angle without interference. According to needs, by adjusting the angle between the vertical plane and the length direction of the rotating rail 5, the rotation angle between the rotating rail 5 and the incoming rail 1 can be obtained.

[0040] At the hinge between the incoming rail 1 and the rotating rail 5, the first arc groove 101 of the incoming rail 1 corresponds to the upper half of the third arc groove 501 of the rotating rail 5, and a steel shaft 6 with a threaded hole 601 at the bottom is arranged between them. The second flange 502 cooperates with the second arc groove 102, and the first flange 103 cooperates with the lower half of the third arc groove 501. Through holes are respectively arranged at the centers of the first flange 103 and the second flange 502. A precision reamed bolt 7 is used as the hinge shaft between the first flange 103 and the second flange 502, and the threaded end of the precision reamed bolt 7 is connected to the steel shaft 6. The steel shaft 6 serves as the hinge shaft for the upper parts of the incoming rail 1 and the outgoing rail 2. The incoming rail 1 is a fixed rail. To improve the connection strength of the rotating rail 5, the second flange 502 of the rotating rail 5 cooperates with the second arc groove 102 of the incoming rail 1 to form a structure in which the incoming rail 1 supports the rotating rail 5. Moreover, to ensure the smooth rotation of the rotating rail 5, there is a certain distance between the two ends of the second arc groove 102 and the end face of the incoming rail 1, that is, the arc angle corresponding to the second arc groove 102 is less than 180°.

[0041] All the features at the hinge end of the rotating rail 5 and the incoming rail 1 are machined by cutting to ensure the assembly accuracy requirements.

[0042] As a preferred structure, the free end of the rotating rail 5 is docked with one end of the driving rail 2, and a certain expansion gap is left at the docking part of the rotating rail 5 and the driving rail 2. This expansion gap serves as a compensation gap for thermal expansion and contraction, ensuring that the rail-changing system can still work properly in different seasons. The size of the gap is determined according to the specific thermal expansion and contraction situation of the rail. In order to ensure the smoothness of the vehicle passing, the gap should not be too large and should be maintained between 3 and 6 millimeters. The end face of the free end of the rotating rail 5 is a convex arc surface, and the end face of the docking end of the driving rail 2 and the rotating rail 5 is a concave arc surface 202. The virtual arcs where the convex arc surface is located and the virtual arc where the concave arc surface 202 is located are concentric circles with the hinge end of the rotating rail 5 as the center. Such a structure ensures that the rotating rail 5 can be smoothly docked with different driving rails 2 under the drive of the driving unit. When the vehicle passes, the wheels do not pass directly through the connection gap at once, but gradually pass along the inclined direction of the arc. Moreover, this connection method also has the characteristic of minimizing the docking gap when the rail rotates and docks.

[0043] As a preferred structure, a lapping notch 503 is provided at the bottom of the lower rail plate at the free end of the rotating rail 5, and the depth of the lapping notch 503 is equal to half of the thickness of the lower rail plate; a lapping part 201 that cooperates with the lapping notch 503 of the lower bottom plate of the rotating rail 5 is provided on the lower rail plate at the docking end of the driving rail 2 and the rotating rail 5; the connection ends of the rotating rail 5 and the driving rail 2 form a complementary shape, and the lapping notch 503 and the lapping part 201 form a lapping structure. Since the driving rail 2 is fixed, in order to improve the connection strength at the rail-changing part and ensure the safe passage of the vehicle, the lapping notch 503 and the lapping part 201 are provided to form a lapping structure, that is, the rotating rail 5 is lapped on the driving rail 2. And this lapping structure can prevent the situation that one side sinks due to the action of gravity when the vehicle passes, resulting in the rail being stuck and unable to be smoothly docked; in addition, the up-and-down lapping method also effectively prevents the situation of misalignment of the walking surface caused by the sinking of one side when the vehicle passes, thus ensuring the smooth passage of the vehicle.

[0044] In order to ensure the smooth docking of the rotating rail 5 and the driving rail 2, transition rounded corners are provided at the bottom edges on both sides of the lapping notch 503 of the lower rail plate of the rotating rail 5, and transition rounded corners are provided at the edges on both sides of the lapping part 201 of the driving rail 2.

[0045] As a preferred structure, the slideway 303 is an arc-shaped slideway 303, and the arc where the slideway 303 is located is a circle with the hinge end of the rotating rail 5 as the center; the longitudinal section of the slideway 303 is in a C shape, and the C-shaped opening of the slideway 303 faces downward. Setting the slideway 303 as an arc can ensure that the rotating rail 5 completes the rail change in the case of a rigid connection with the trolley 301.

[0046] As an optimal structure, the driving unit of the rail change component 3 is provided with a mounting seat 3024, a driving motor 3023, a driving rod 3021, a return spring 3025 and a fixing frame 3026. The mounting seat 3024 is provided with a first vertical plate and a second vertical plate. One end of the first vertical plate is fixedly connected to one side surface of the second vertical plate, and the upper and lower ends of the first vertical plate and the second vertical plate are aligned. The main body of the mounting seat 3024 is formed by welding the first vertical plate and the second vertical plate.

[0047] One end of the driving rod 3021 is provided with a connecting portion for connecting the trolley 301. A spring baffle 3022 is fixedly connected to the driving rod 3021. The portion between the connecting portion of the driving rod 3021 and the spring baffle 3022 is provided as a rack, and the driving rod 3021 on the other side of the spring baffle 3022 is a cylindrical rod. The return spring 3025 is sleeved on the cylindrical rod, and one end of the return spring 3025 is connected to the spring baffle 3022, and the other end is connected to the second vertical plate of the mounting seat 3024. The return spring 3025 is provided to prevent that when the rail change driving unit 302 fails and stays in the middle, the rotating rail 5 will return to the original position under the action of the return spring 3025, avoiding the occurrence of an accident that the free end of the rotating rail 5 does not dock with the driving-out rail 2 and causes the vehicle to derail.

[0048] The output end of the driving motor 3023 is provided with a gear meshing with the rack. The driving motor 3023 is fixed on the first vertical plate of the mounting seat 3024, and the output end and the motor main body of the driving motor 3023 are located on both sides of the first vertical plate. The guide sleeve 3027 is fixedly installed on the second vertical plate of the mounting seat 3024. The guide sleeve 3027 is coaxially arranged with the cylindrical rod of the driving rod 3021, and under the action of the driving motor 3023, the driving rod 3021 can smoothly slide in the guide sleeve 3027.

[0049] The slide rail 3028 is fixed on one side of the output end of the driving motor 3023 on the first vertical plate of the mounting seat 3024. One end of the slide rail 3028 is provided with a limit stop block. A slide seat 3029 is arranged on the slide rail 3028. The spring baffle 3022 is fixedly connected to the slide seat 3029. One end of the second vertical plate of the mounting seat 3024 is hinged to the fixing frame 3026, and the upper end of the fixing frame 3026 is fixedly connected to the track suspension bracket. Such a structure enables the driving units to be connected into a whole. When rail change is required, the driving motor 3023 is started, and the gear at the output end of the driving motor 3023 drives the driving rod 3021 (the gear meshes with the rack of the driving rod 3021).

[0050] The return spring 3025 is compressed after the rail change is completed and before the rotating rail 5 returns to its original position, being in an energy storage state; when the vehicle passes through the rail change section and the rotating rail 5 needs to return to its original position, the drive motor 3023 rotates in the reverse direction, and the return spring 3025 will push the spring baffle 3022, causing the drive rod 3021 to extend out of the guide sleeve 3027, and the rotating rail 5 completes its return and docks with the initial departure rail 2.

[0051] The drive rod 3021 is fixedly connected to the slide seat 3029 through the spring baffle 3022. The slide seat 3029 is slidably connected to the slide rail 3028. The slide rail 3028 is fixed on the first vertical plate of the mounting seat 3024. The cylindrical rod of the drive rod 3021 passes through the guide sleeve 3027 fixed on the second vertical plate of the mounting seat 3024. Under the action of the drive motor 3023, the drive rod 3021 can make a reciprocating linear motion relative to the mounting seat 3024 along the directions of the slide rail 3028 and the guide sleeve 3027. When the trolley 301 makes an arc motion in the slideway 303, the lateral force between the trolley 301 and the drive rod 3021 will be resolved by the mounting seat 3024 and the fixing bracket 3026.

[0052] As a preferred structure, the trolley 301 is provided with traveling wheels 3011, wheel axles 3012, a differential 3013 and a connecting column 3014. The traveling wheels 3011 are installed at both ends of the wheel axle 3012. A differential 3013 is arranged in the middle part of the wheel axle 3012. A lower part of the wheel axle 3012 where the differential 3013 is arranged is fixedly connected with the connecting column 3014. A hanging part is arranged at the lower end of the connecting column 3014. A connecting part for fixedly connecting with the connecting end of the drive rod 3021 is arranged on the side wall of the connecting column 3014. The hanging part at the end of the connecting column 3014 is used for connecting the upper rail plate of the rotating rail 5, and the hanging part and the upper rail plate are fixedly connected by welding; if it is for convenient disassembly and maintenance, the hanging part at the lower end of the connecting column 3014 can also be connected to the rotating rail 5 through bolts and nuts.

[0053] As a preferred structure, as Figures 7 to 10 shown, in this embodiment, the trolley 301 is provided with a walking disc 3015, a rolling bearing 3017, a mounting sleeve 3016 and a connecting column 3014. One end of the mounting sleeve 3016 is provided with an end cover. On the outer wall of the mounting sleeve 3016 at the lower end of the end cover, cylindrical first boss 301601, second boss 301602, third boss 301603 and fourth boss 301604 with decreasing diameters are arranged in sequence.

[0054] The rolling bearing 3017 is sleeved on the second boss 301602 of the mounting sleeve 3016, and the diameter of the second boss 301602 is equal to the inner diameter of the rolling bearing 3017; several steel balls are evenly arranged at the bottom of the walking disc 3015 in the circumferential direction of the walking disc 3015, and the steel balls are ball-jointed with the walking disc 3015. The walking disc 3015 is sleeved on the third boss 301603 of the mounting sleeve 3016, and the diameter of the third boss 301603 is equal to the inner diameter of the walking disc 3015; a gland 3018 is sleeved on the fourth boss 301604 of the mounting sleeve 3016, and the inner diameter of the gland 3018 is larger than the diameter of the fourth boss 301604; a flange is provided at the upper end of the connecting column 3014, and a hanging part is provided at the lower end, and the main body of the connecting column 3014 is made of a circular steel pipe; the mounting sleeve 3016 is sleeved on the connecting column 3014; bolt through holes corresponding to the flange at the upper end of the connecting column 3014 are respectively provided on the walking disc 3015, the mounting sleeve 3016 and the gland 3018, and bolts and nuts are used at these corresponding bolt holes to fixedly connect the walking disc 3015, the mounting sleeve 3016, the gland 3018 and the connecting column 3014.

[0055] By providing the rolling bearing 3017, and the friction generated when the outer wall of the rolling bearing 3017 comes into contact with the side wall of the C-shaped groove of the slideway 303 is rolling friction, which greatly reduces the frictional resistance. The steel balls on the bottom surface of the walking disc 3015 can rotate freely within the walking disc 3015, which also ensures that the walking disc 3015 smoothly makes a reciprocating motion along the arc-shaped slideway 303 within the slideway 303. Using the embodiment of the trolley 301 can completely avoid the situation that the wheeled trolley 301 has difficulty turning or getting stuck in the arc-shaped slideway 303.

[0056] First, when the vehicle needs to pass through the track-changing section, after the control unit collects and receives the track-changing command, it controls the track-changing drive unit 302 to execute the track-changing command; if it needs to travel according to the original track, no track-changing is performed. If track-changing is required, then the drive motor starts and drives the drive rod through the gear to complete the docking with the target driving track 2 before the vehicle enters the track-changing section; after the vehicle passes through, the deceleration motor starts to reverse so that the rotating track 5 returns to the state of docking with the original driving track 2. If the motor fails or suddenly loses power during this process, the rotating track 5 will return to the state of docking with the original driving track 2 under the action of the restoring spring.

[0057] For the track-changing system of the present invention, one driving track 1 is hinged to one rotating track 5, one rotating track 5 can correspond to multiple (more than two) driving tracks 2, and the track in the collinear direction with the driving track 1 is used as the original driving track 1.

Claims

1. A single-track turnout rail-changing system, comprising an incoming rail, an outgoing rail, a connecting frame and a rail-changing assembly. Both the incoming rail and the outgoing rail are I-shaped rails. The I-shaped rail is provided with an upper rail plate, a lower rail plate and a rail vertical plate. The incoming rail and the outgoing rail are fixedly suspended at the bottom end of the connecting frame, and the top end of the connecting frame is fixedly connected to a rail hanger arranged according to the planned line. It further includes a rotating rail for connecting the incoming rail and the outgoing rail. One incoming rail corresponds to one rotating rail hinged thereto, and the rotating rail corresponds to not less than two outgoing rails. The rail-changing assembly includes a trolley, a slideway, a control unit and a driving unit. The slideway and the driving unit are respectively fixed to the same rail hanger. The trolley is slidably connected to the slideway and fixedly connected to the driving unit. A connecting column is arranged at the lower part of the trolley, and the lower end of the connecting column is fixedly connected to the upper rail plate of the rotating rail. The control unit is electrically connected to the driving unit. Under the control of the control unit, the driving unit drives the trolley to move reciprocally along the slideway, and the rotating rail completes the docking with the corresponding outgoing rail, thereby realizing rail change. It is characterized in that: On the longitudinal end face of the hinged end of the incoming rail, there are a first arc groove, a second arc groove and a first flange. The first arc groove is at the center of the rail vertical plate and penetrates through the upper rail plate and the rail vertical plate. The second arc groove is arranged at the connection of the lower rail plate and the rail vertical plate, and the depth of the second arc groove is equal to half of the thickness of the lower rail plate. The first flange is arranged on the lower rail plate, coaxially arranged with the first arc groove, and the radius of the first flange is equal to the radius of the first arc groove. The upper end face of the first flange is coplanar with the bottom surface of the second arc groove. The hinged end of the rotating rail is provided with a third arc groove and a second flange. The third arc groove is separated into upper and lower parts by the second flange, and the radius of the third arc groove is equal to the radius of the first arc groove. The second flange is arranged in the upper half of the lower rail plate of the rotating rail, and its thickness is equal to the depth of the second arc groove at the hinged end of the incoming rail. On both sides of the third arc groove of the rotating rail, there are symmetrically arranged vertical planes at a certain angle with the length direction of the rotating rail. At the hinge joint of the incoming rail and the rotating rail, the first arc groove of the incoming rail corresponds to the upper half of the third arc groove of the rotating rail, and there is a steel shaft with a threaded hole at the bottom between them. The second flange is matched with the second arc groove, and the first flange is matched with the lower half of the third arc groove. Through holes are respectively arranged at the centers of the first flange and the second flange. A precision reaming bolt is used as the hinge shaft of the first flange and the second flange, and the threaded end of the precision reaming bolt is connected to the steel shaft. The steel shaft serves as the hinge shaft for the upper parts of the incoming rail and the outgoing rail.

2. The single-track turnout rail-changing system according to claim 1, It is characterized in that: The free end of the rotating rail is docked with one end of the outgoing rail (2), and there is a certain expansion gap at the docking part of the rotating rail and the outgoing rail. The end face of the free end of the rotating rail is a convex arc surface, and the end face of the docking end of the outgoing rail and the rotating rail is a concave arc surface. The virtual arcs where the convex arc surface and the concave arc surface are located are concentric circles with the hinged end of the rotating rail as the center.

3. The single-track turnout rail-changing system according to claim 2, characterized in that: a lapping notch is arranged at the bottom of the lower rail plate at the free end of the rotating rail, and the depth of the lapping notch is equal to half of the thickness of the lower rail plate; a lapping part matched with the lapping notch of the lower bottom plate of the rotating rail is arranged on the lower rail plate at the docking end of the running-out rail and the rotating rail; the connecting ends of the rotating rail and the running-out rail form a complementary shape, and a lapping structure is formed by the lapping notch and the lapping part.

4. The single-track turnout rail-changing system according to claim 3, characterized in that: the driving unit of the rail-changing assembly is provided with a mounting seat, a driving motor, a driving rod, a return spring and a fixing frame. The mounting seat is provided with a first vertical plate and a second vertical plate. One end of the first vertical plate is fixedly connected to one side surface of the second vertical plate, and the upper and lower ends of the first vertical plate and the second vertical plate are aligned; one end of the driving rod is provided with a connecting part for connecting the trolley, a spring baffle is fixedly connected to the driving rod, a rack is arranged at the part between the connecting part of the driving rod and the spring baffle, and the driving rod on the other side of the spring baffle is a cylindrical rod; the return spring is sleeved on the cylindrical rod, and one end of the return spring is connected to the spring baffle and the other end is connected to the second vertical plate of the mounting seat; a gear meshed with the rack is installed at the output end of the driving motor, the driving motor is fixed on the first vertical plate of the mounting seat, and the output end and the motor body of the driving motor are located on both sides of the first vertical plate; a guide sleeve is fixedly installed on the second vertical plate of the mounting seat, the guide sleeve is coaxially arranged with the cylindrical rod of the driving rod, and the driving rod can smoothly slide in the guide sleeve under the action of the driving motor; the slide rail is fixed on one side of the output end of the driving motor on the first vertical plate of the mounting seat, a limit stop block is arranged at one end of the slide rail, a slide seat is arranged on the slide rail, and the spring baffle is fixedly connected to the slide seat; one end of the second vertical plate of the mounting seat is hinged to the fixing frame, and the upper end of the fixing frame is fixedly connected to the track hanger.

5. The single-track turnout rail-changing system according to claim 4, characterized in that: the slideway is an arc-shaped slideway, and the circle where the fixed position of the slideway is located is a circle with the hinge end of the rotating rail as the center; the longitudinal section of the slideway is in a C shape, and the C-shaped opening of the slideway faces downward.

6. The single-track turnout rail-changing system according to claim 5, characterized in that: the trolley is provided with traveling wheels, axles, a differential and a connecting column. The traveling wheels are installed at both ends of the axle, a differential is arranged in the middle part of the axle, a connecting column is fixedly connected to the lower part of the axle where the differential is arranged, a hanging part is arranged at the lower end of the connecting column, and a connecting part for fixedly connecting with the connecting end of the driving rod is arranged on the side wall of the connecting column.

7. The single-track turnout rail-changing system according to claim 1, characterized in that: The trolley is provided with a walking disc, a rolling bearing, a mounting sleeve and a connecting column; one end of the mounting sleeve is provided with an end cover, and on the outer wall of the mounting sleeve at the lower end of the end cover, there are successively arranged a first boss, a second boss, a third boss and a fourth boss in the shape of a cylinder with decreasing diameters; the rolling bearing is sleeved on the second boss of the mounting sleeve, and the diameter of the second boss is equal to the inner diameter of the rolling bearing; on the bottom of the walking disc, several steel balls are evenly arranged in the circumferential direction of the walking disc, the steel balls are ball-jointed with the walking disc, the walking disc is sleeved on the third boss of the mounting sleeve, and the diameter of the third boss is equal to the inner diameter of the walking disc; a gland is sleeved on the fourth boss of the mounting sleeve, and the inner diameter of the gland is larger than the diameter of the fourth boss; the upper end of the connecting column is provided with a flange plate, the lower end is provided with a hanging part, and the main body of the connecting column is made of a circular steel pipe; the mounting sleeve is sleeved on the connecting column; bolt through holes corresponding to the flange at the upper end of the connecting column are respectively arranged on the walking disc, the mounting sleeve and the gland, and bolts and nuts are used at these corresponding bolt holes to fixedly connect the walking disc, the mounting sleeve, the gland and the connecting column.

Images