Suspended monorail vehicle track switching system

Abstract

The present invention discloses a suspended monorail vehicle track switching system, in which a switch girder (3) realizes track switching by connecting the corresponding rear end girder (2) and front end girder (1) through rotational movement, and the above-mentioned devices and mechanisms are integrated into the track switching system, and the rotating device (5), connecting device and running mechanism (7) all use coupling bearings and can adaptively adjust their positional relationships to compensate for engagement errors of the switch girder (3) caused by temperature and vibration factors and provide stable support and operating conditions, and the mounting positions of the crowning gear (6-2) and rack assembly (6-3) of the rotary drive mechanism (6) can adapt to the expansion and contraction deformation of the switch girder (3) to provide stable drive, and the combination of the above-mentioned devices and mechanisms improves the overall stability of the suspended monorail vehicle track switching system.

Description

[Technical Field]

[0001] The present invention relates to the field of suspended track girders, and in particular to suspended monorail vehicle track switching systems. [Background technology]

[0002] Suspended track transit is a type of track transit system that has been attracting attention in recent years. To facilitate track switching for operating trains, suspended track transit is equipped with a track switching system in which a switch girder connects end girders in different directions at both ends. In monorail vehicle track switching systems, the front end girder is switched by the switch girder to guide the train to two different rear end girders. Conventional track switching systems have two types of track switching, for example, a type in which the switch girder moves parallel to connect the front and rear end girders to switch tracks, and a type in which the switch girder rotates to connect the front and rear end girders to switch tracks. The method in which the branch girder switches tracks by moving parallel is described in the technical documents disclosed in the Chinese patent application with application number 201710456765.X, and the method in which the branch girder connects the front and rear girders by rotating to switch tracks is described in the technical documents disclosed in the Chinese patent applications with application numbers 202010117408.2, 202010386333.8 and 202110282480.5. Summary of the Invention [Problem to be solved by the invention]

[0003] To solve the shortcomings of the prior art, the present application provides a suspended monorail vehicle track switching system with a reasonable structure, stable operation, and a compensation function for deformation of the switch girder caused by factors such as environmental temperature and vibration, and the present invention uses the following technical means: [Means for solving the problem]

[0004] The suspended monorail vehicle track switching system includes a front girder, a rear girder, a branch girder, and a portal frame girder, wherein one front girder is provided, two rear girder are provided, and two branch girders are provided to connect the front girder and the rear girder, at least two portal frame girders are provided, each suspending a branch girder adjacent to both ends of the branch girder, a rotation device is provided between the portal frame girder at the end adjacent to the rear girder and one of the branch girders, and the branch girder rotates around the rotation device, a rotation drive mechanism is provided between the portal frame girder at the end adjacent to the front girder and the branch girder to drive the branch girder to rotate around the rotation device, a traveling mechanism is provided between the portal frame girder and the branch girder to support the branch girder and enable it to travel, a locking mechanism is provided on each of the front girder and the two rear girder, and a connecting device is provided between the two branch girders, the traveling mechanism includes a traveling rail attached to the portal frame girder and a set of roller assemblies connected to the branch girder, the roller assembly including a support base, a support shaft, and a roller, each of the rollers rolling on the traveling rail along a horizontal plane, and a first joint bearing being provided between the roller and the support shaft; The rotation drive mechanism includes a power train, a crowning gear, and a rack assembly, the crowning gear is provided at the power output end of the power train, the power train is attached to a branch girder, the axis of the crowning gear is directed toward the axis of the rotation device and is parallel to a horizontal plane, and the rack assembly is attached to a portal frame girder and includes a set of spur tooth racks arranged and combined in an arc shape.

[0005] Furthermore, a guide wheel compensator is provided at the connection points of the front girders, branch girders, and rear girders, and the compensator engages with the tooth profile to fill gaps. Furthermore, the center of the arc formed by arranging and combining the spur tooth racks is concentric with the rotation center of the branch girders, and the power train includes a motor and a reducer.

[0006] Furthermore, the axis of each of the rollers is directed toward the axis of the rotating device.

[0007] Furthermore, the running rail is arc-shaped, and the center of the arc is concentric with the center of the rotating device.

[0008] Furthermore, the running rail and roller assembly are provided at the end away from the rotating device, a slide rail is provided on the portal frame girder on the side closer to the rotating device, a carriage slidably mounted on the slide rail is attached to the branch girder, and stopper plates are provided on both ends of the slide rail.

[0009] Furthermore, a pair of carriages are provided on both sides of each of the branch beams.

[0010] Furthermore, the slide rail is provided with a copper plate that comes into sliding contact with the carriage.

[0011] Furthermore, the slide rails and carriages are matched in number and position, and each slide rail is arc-shaped, with the center of the arc concentric with the center of the rotating device.

[0012] Furthermore, the rotation device includes an upper fixed base and a lower fixed base, and a second joint bearing is provided between the upper fixed base and the lower fixed base.

[0013] Furthermore, a cavity that restricts the outer ring of the second joint bearing is provided on the upper fixed base, a rotating shaft that can be engaged with the inner ring of the second joint bearing is provided on the lower fixed base, and a seal ring is provided between the upper fixed base and the rotating shaft.

[0014] Furthermore, the upper fixed base includes an upper fixed column and an upper fixed flange, the cavity is provided within the upper fixed column, the lower fixed base includes a lower fixed column and a lower fixed flange, and the rotation shaft is provided on the lower fixed column.

[0015] Furthermore, a pair of reinforcing ribs is provided between the upper fixed column and the upper fixed flange, and between the lower fixed column and the lower fixed flange.

[0016] Furthermore, the rotating shaft and the lower fixed column are integrated.

[0017] Furthermore, the rotating shaft and the lower fixed column are connected by a flange.

[0018] Furthermore, a retaining ring is provided at the end of the upper fixed column to prevent the second joint bearing from coming out of the cavity, and the seal ring is provided between the retaining ring and the rotating shaft.

[0019] Furthermore, a stopper boss is provided in the cavity, and a retaining ring is attached to the end of the upper fixed column to press the second joint bearing against the stopper boss.

[0020] Furthermore, a bearing sleeve is provided between the retaining ring and the outer ring of the second joint bearing.

[0021] Furthermore, the connection device connects two branch girders, and at least one pair of connection devices is provided between the two branch girders, and each of the pair of connection devices connects the two branch girders adjacent to both ends of the branch girders, and the pair of connection devices includes at least one movable connection part, and the movable connection part includes a pair of bases fixedly connected to the two branch girders, each of which is provided with a third joint bearing, and a connecting rod is provided between the pair of third joint bearings.

[0022] Furthermore, the connecting rod has an adjustable length, and at least one of the bases has a slope on the side connected to the branch beam.

[0023] Furthermore, the connecting rod includes a threaded sleeve, and threaded rods are threaded onto both ends of the threaded sleeve, and each of the threaded rods is connected to a third joint bearing on the corresponding side, and a lock nut is further provided on each of the threaded rods.

[0024] Furthermore, the pair of connection devices further includes a fixed connection part, which includes an intermediate pile, and both ends of the intermediate pile are provided with a first connection plate and a second connection plate, which are respectively connected to the two branch girders.

[0025] Furthermore, the first and second connecting plates are connected to the intermediate pile by flanges, a slope is provided on at least one of the first and second connecting plates, and a backing plate is provided between the intermediate pile and the first connecting plate and / or the second connecting plate.

[0026] Furthermore, the movable connecting part is provided at an end remote from the rotating device, and the fixed connecting part is provided at an end close to the rotating device.

[0027] Furthermore, the locking mechanism includes a thrust rod, a lock pin, a guide slide base, and a lock base, the lock pin is slidably mounted on the guide slide base and connected to the thrust rod, the thrust rod and the guide slide base are mounted on the front end spar or the rear end spar, the lock base is mounted on the branch spar, and the thrust rod drives the lock pin to insert into or move away from the lock base.

[0028] Furthermore, the thrust rod is an electric push rod or a hydraulic rod.

[0029] Furthermore, the locking mechanism further includes a limit switch, and the limit switch is provided on the lock base. [Effects of the Invention]

[0030] In the track girder track switching system with the above structure, monorail tracks are switched by rotating a pair of switch girders, avoiding unstable operation caused by excessive movement distance of the switch girders and avoiding the problem of loud vehicle operation noise caused by excessive gaps at the connection points. The rollers of the running mechanism use the first coupling bearing to compensate for the problem of the rollers not being able to safely contact the running rail due to ambient temperature, vibration, and assembly errors, so that the rollers can adapt to their engagement relationship with the running rail and safely contact the running rail, thereby improving running stability while the switch girders are rotating. A crowning gear is used as the rotation drive mechanism, and the axis of the crowning gear is parallel to the horizontal plane, so this solves the problem of unstable operation of the running mechanism caused by the expansion and contraction of the switch girders, further improving running stability. [Brief explanation of the drawings]

[0031] The following drawings are not intended to limit the scope of the present application, but are merely for illustrative purposes of explaining and interpreting the present application.

[0032] [Figure 1] 1 is a schematic diagram illustrating the overall configuration of a line switching system according to the present invention. [Figure 2] FIG. 2 is a schematic diagram of a traveling mechanism according to the present invention. [Figure 3] FIG. 2 is a schematic diagram illustrating a roller group of a traveling mechanism according to the present invention. [Figure 4] 1 is a schematic diagram of a slide rail of a traveling mechanism according to the present invention; [Figure 5] 1 is a schematic diagram of a rotation drive mechanism according to the present invention; [Figure 6] FIG. 2 is a schematic diagram illustrating the configuration of a rack assembly of the rotary drive mechanism of the present invention. [Figure 7] FIG. 2 is a schematic diagram illustrating the power train of the rotary drive mechanism of the present invention. [Figure 8] 1 is a schematic diagram of a rotation device according to the present invention; [Figure 9] 1 is a cross-sectional view of a rotating device of the present invention. [Figure 10] 1 is a schematic diagram of a connection structure connected to a branch girder of a connection device of the present invention. FIG. [Figure 11] 1 is a schematic diagram of a movable connecting part of a connecting device of the present invention; [Figure 12] 1 is a cross-sectional view of a movable connecting part of a connecting device of the present invention; [Figure 13] 1 is a schematic diagram of a fixed connection component of a connection device according to the present invention; [Figure 14] FIG. 2 is a schematic diagram of a locking mechanism according to the present invention. [Figure 15] FIG. 1 is a schematic diagram illustrating the configuration of a compensation plate according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in more detail below with reference to the drawings and specific embodiments.

[0034] The suspended monorail vehicle track switching system shown in FIG. 1 includes a front end girder 1, a rear end girder 2, and a branch girder 3. Since the technical means relates to a monorail vehicle track switching system, the front end girder 1 is designed to be one girder, the rear end girder 2 is designed to be two girder, and accordingly the branch girder 3 is designed to be two girder, and the branch girder 3 and the rear end girder 2 are in a corresponding relationship. As shown in the diagram, the curved rear girder 2 is connected to the front girder 1 by a curved switch girder 3, and the straight rear girder 2 is connected to the front girder 1 by a straight switch girder 3. The switch girder 3 rotates to enter the track switching position, connecting the rear girder 2 and the front girder 1 and guiding vehicles to switch tracks. That is, vehicles can enter either lane of the rear girder 2 from the front girder 1, or enter either lane of the rear girder 2 from the front girder 1. By abutting the two switch girder 3 against the two rear girders 2 respectively, the rotation angle of the switch girder 3 is small and the connection points between the switch girder 3 and the front girder 1 and the rear girder 2 are more rational. Therefore, in this track switching system, the switch girder 3 plays a key role and is an important part in guiding vehicles to the correct track. The track switching system is provided with at least one pair of portal frame girders 4, which suspend and support switch girders 3 and allow the switch girders 3 to rotate about a fixed point. A rotation device 5 is provided between the switch girders 3 and the portal frame girders 4, and the rotation device 5 provides a rotation center positioning point, allowing the switch girders 3 to rotate about the rotation device 5. A rotation drive mechanism 6 is further provided between the switch girders 3 and the portal frame girders 4, and the rotation drive mechanism 6 provides power to drive the switch girders 3 to rotate about the rotation device 5. A traveling mechanism 7 is further provided between the switch girders 3 and the portal frame girders 4 to suspend the switch girders 3 and allow them to travel along a fixed track. However, because the rotation device 5 is only provided on one switch girder 3, the two switch girders 3 must be connected to rotate concentrically in synchronous operation. Therefore, a connection device is further provided between the two switch girders 3, which not only connects the switch girders 3 for synchronous movement, but also maintains a constant positional relationship between the two switch girders 3.After the branch girder 3 has completed its track switching operation, a locking mechanism 8 is provided on both the front end girder 1 and the rear end girder 2 to accurately position the branch girder 3 and prevent it from loosening, and the locking mechanism 8 abuts the branch girder 3 against the front end girder 1 and the rear end girder 2 to lock and position it.

[0035] The structures of the devices and mechanisms of the line switching system will be further described below with reference to the drawings.

[0036] Running mechanism The traveling mechanism 7 shown in Figure 2 includes a traveling rail 7-1 and a set of roller assemblies 7-2, where the traveling rail 7-1 is fixedly connected to the portal frame girder 4, and the roller assembly 7-2 is connected to the branch girder 3, and the branch girder 3 is suspended by the roller assembly 7-2.

[0037] As shown in FIG. 3, the roller assembly 7-2 includes a support base 7-2-1, a support shaft 7-2-2, and a roller 7-2-3. The support base 7-2-1 is connected to the branch girder. The support shaft 7-2-2 is provided on the support base 7-2-1 to mount the roller 7-2-3. A first coupling bearing 7-2-4 is provided between the roller 7-2-3 and the support shaft 7-2-2. The roller 7-2-3 engages with the running rail 7-1 to roll along the horizontal plane on the running rail 7-1. Due to assembly errors, thermal deformation, and the effects of vibration caused by vehicle traffic, if the rollers 7-2-3 and the support shaft 7-2-2 are directly and rigidly connected, the rollers 7-2-3 will not be able to fully contact the running rail 7-1. For example, if one roller 7-2-3 is installed too low to support the branch girder 3, the remaining rollers 7-2-3 will not be able to contact or will not be able to fully contact the running rail 7-1, causing the roller assembly 7-2 to be subjected to excessive force and unable to provide stable support, which will affect running stability. By providing a first coupling bearing 7-2-4 between the support shaft 7-2-2 and the rollers 7-2-3, each roller 7-2-3 can be adaptively adjusted to fully contact the running rail 7-1, thereby better supporting the branch girder 3 and making running more stable.

[0038] As shown in FIG. 1, when the switch girder rotates and travels, the axis of each roller 7-2-3 intersects with the axis of the rotating device 5, allowing the rollers to roll more smoothly during this travel process. Naturally, the idea of ​​the rollers intersecting with the axis of the rotating device is theoretical, and such perfection is impossible in actual assembly. However, the purpose is to orient the roller axis toward the axis of the rotating device 5, allowing the rollers to travel along an arc and reducing the sliding friction of the rollers as much as possible to match the rotation characteristics of the switch girder 3. If the area of ​​the running rail 7-1 is sufficiently large and there is sufficient running space for the rollers 7-2-3, there is no need to limit the shape and specifications of the running rail. When the running rail 7-1 shown in FIG. 2 is used, the running rail 7-1 is provided only in the area where the rollers 7-2-3 travel. Therefore, the running rail 7-1 must be arc-shaped, and the center of the arc of the running rail 7-1 must be concentric with the rotation center of the switch girder 3.

[0039] In this track switching system, the end of the switch girder 3 away from the center of rotation and the end close to the center of rotation have different running distances, with the end away from the center of rotation having a larger running distance and the end close to the center of rotation having a smaller running distance. Therefore, the roller assembly 7-2 can be attached to the end with the larger running distance. Looking at the structure shown in Figure 1, the roller assembly is attached to the end close to the front girder 1 of the switch girder 3. The end with the smaller running distance runs in a sliding manner, which not only meets the running requirements but also reduces costs and simplifies the structure. Naturally, both sides of the switch girder can run while being supported by the roller assembly 7-2. When using the combined rolling and sliding travel mechanism shown in Figure 2, the end of the branch girder away from the rotation center has a long travel distance, making rolling travel more reasonable. Therefore, a roller assembly 7-2 is installed at the end of the branch girder away from the rotation center, and a slide rail 7-3 is installed on the portal frame girder 4 at the end closest to the rotation center of the branch girder. A carriage 7-4 is installed on this branch girder 3 and is slidable on the slide rail 7-3. As shown in Figure 4, stopper plates 7-3-1 are installed on both ends of the slide rail 7-3 to prevent the branch girder from exceeding its travel distance limit due to a malfunction or excessive inertia of the rotation drive mechanism 6. For stability, a single branch girder 3 is installed with one pair of carriages 7-4. For material and cost savings, two slide rails 7-3 are installed on the portal frame girder 4, respectively, to accommodate the number and position of the carriages 7-4. Similarly, for stability, four roller assemblies 7-2 are provided on a single branch girder, two on each side of the branch girder, and two roller assemblies 7-2 on the same side are provided on both sides of the running rail 7-1.If the contact area between the slide rail 7-3 and the carriage 7-4 is large enough, there is no need to consider the shape of the slide rail 7-3, saving materials. In order to match the shape of the slide rail 7-3 to the running trajectory of the carriage 7-4, the slide rail 7-3 is made arc-shaped. Similarly, by ensuring that the center of the arc of the slide rail 7-3 overlaps with the rotation center of the branch beam, the contact area with the slide rail 7-3 does not change during the movement of the carriage 7-4, and to reduce wear on the carriage 7-4, a copper plate 7-3-2 is provided at the contact position between the slide rail 7-3 and the carriage 7-4.

[0040] Rotation drive mechanism As shown in Figure 5, the rotation drive mechanism includes a power train 6-1 attached to the branch girder 3 and a rack assembly 6-3 attached to the portal frame girder 4, and a crowning gear 6-2 that meshes with the rack assembly 6-3 is attached to the power train 6-1.When the crowning gear 6-2 is driven by the power train 6-1 and travels along the rack assembly 6-3, it drives the branch girder 3 to rotate around the rotation device 5.

[0041] As shown in Fig. 6, the rack assembly includes a set of spur racks 6-3-1, which are arranged in an arc. As shown in Fig. 7, the power train 6-1 includes a motor and a reducer, and the crowning gear 6-2 is attached to the reducer. As shown in Figs. 5 and 1, in order to travel along the arc, the axis of the crowning gear 6-2 is parallel to the horizontal plane and faces the axis of the rotating device 5, and the center of the arc formed by the arrangement of the spur racks 6-3-1 is concentric with the rotation center of the branch beam. The rack assembly 6-3 is formed by joining and arranging spur racks 6-3-1. Because the crowning gear 6-2 is used, the teeth of the crowning gear 6-2 and the spur rack 6-3-1 can maintain a meshing relationship within a small range. When designing the rack assembly 6-3, the more spur racks there are and the shorter the length of each spur rack, the more the arc of the rack assembly 6-3 approaches a regular arc. While the rack assembly's shape should strictly be a partial polygon, it can be considered an arc because it approximates a circular arc when viewed as a whole. In this way, even if the branch girders 3 expand and contract when the rack assembly 6-3 and the crowning gear 6-2 engage, the meshing relationship between the crowning gear 6-2 and each spur rack 6-3-1 remains unchanged even after the crowning gear 6-2 moves axially. Therefore, the drive mechanism not only satisfies the rotational drive requirements, but also eliminates the impact of branch girders' deformation on the drive mechanism's operational stability.

[0042] When installing the rotary drive mechanism, it should be installed as far away from the rotating device 5 as possible. The end of the branch girder 3 away from the rotating device 5 has a large moving distance, so there is sufficient installation space and the load on the rotary drive mechanism when it is operating can be reduced as much as possible.

[0043] Rotating device 8 and 9, the rotation device 5 includes an upper fixed base 5-1 and a lower fixed base 5-2, and a second coupling bearing 5-3 is installed between the upper fixed base 5-1 and the lower fixed base 5-2. The upper fixed base 5-1 and the lower fixed base 5-2 are connected to the portal frame girder 4 and the branch girder 3, respectively. In order to facilitate the installation of the second coupling bearing 5-3, a cavity 5-1-1 is installed in the upper fixed base 5-1, and the second coupling bearing 5-3 is installed in the cavity 5-1-1, with its outer ring contacting the inner wall of the cavity 5-1-1 to limit the vibration of the second coupling bearing 5-3 in the cavity 5-1-1. The second coupling bearing 5-3 can be directly inserted into the cavity 5-1-1 by interference fit, thereby directly fixing the second coupling bearing 5-3 to the cavity 5-1-1. A rotating shaft 5-4 is provided on the lower fixed base 5-2, and the rotating shaft 5-4 is fitted into the inner ring of the second joint bearing 5-3. To ensure smooth operation of the second joint bearing 5-3, the second joint bearing 5-3 needs to be lubricated. To prevent leakage of lubricating oil, a seal ring 5-5 is provided between the upper fixed base 5-1 and the rotating shaft 5-4.

[0044] As shown in FIG. 9, the upper fixed base 5-1 includes an upper fixed column 5-1-2 and an upper fixed flange 5-1-3. The cavity 5-1-1 is disposed in the upper fixed column 5-1-2. A retaining ring 5-7 is disposed at the end of the upper fixed column 5-1-2 to prevent the second coupling bearing 5-3 from coming out of the cavity 5-1-1. The retaining ring 5-7 and the upper fixed column 5-1-2 are integrated together. When the second coupling bearing 5-3 and the cavity 5-1-1 are assembled in an unlocked state, the retaining ring 5-7 can prevent the second coupling bearing 5-3 from coming out. A sleeve may be disposed in the cavity. For example, the sleeve may be integrally formed with the stopper boss 5-1-4 in FIG. 9. The sleeve presses the outer ring of the second coupling bearing 5-3, and the second coupling bearing 5-3 is clamped and fixed between the sleeve and the retaining ring 5-7. Of course, in the embodiment shown in Figure 9, the retaining ring 5-7 and the upper fixed column 5-1-2 can be provided separately and fixed with bolts. Alternatively, a stopper boss 5-1-4 can be provided in the cavity 5-1-1, and the retaining ring 5-7 can be fixed to the upper fixed column 5-1-2 to clamp the second coupling bearing 5-3 between the stopper boss 5-1-4. To avoid assembly errors and improve the clamping effect of the retaining ring 5-7, a bearing sleeve 5-8 can be provided between the retaining ring 5-7 and the second coupling bearing 5-3, and the retaining ring 5-7 presses against the bearing sleeve 5-8 to clamp and fix the second coupling bearing 5-3. In this structure, a seal ring 5-5 is provided between the retaining ring 5-7 and the rotating shaft. The seal ring 5-5 is sealed using felt.

[0045] As shown in Figure 9, the lower fixed base 5-2 includes a lower fixed column 5-2-1 and a lower fixed flange 5-2-2, and the rotating shaft 5-4 is provided on the lower fixed column 5-2-1, and the rotating shaft 5-4 and the lower fixed column 5-2-1 may be integrated, or as shown in Figure 9, the rotating shaft 5-4 may be provided separately from the lower fixed column 5-2-1 and connected to the lower fixed column 5-2-1 by a flange.

[0046] In order to stabilize the upper fixed column 5-1-2 and the lower fixed base 5-2, a pair of reinforcing ribs 5-6 is provided between the upper fixed column 5-1-2 and the upper fixed flange 5-1-3, and between the lower fixed column 5-2-1 and the lower fixed flange 5-2-2.

[0047] Connecting Devices 10 , the connection structure of the branch girders includes at least one pair of connection devices, which connect two branch girders and maintain the spacing and positional relationship between the two branch girders. The pair of connection devices is attached to positions close to both ends of the branch girders. Of course, the connection structure can also include an additional connection device at the middle position of the branch girders 3 according to actual needs. The pair of connection devices is provided with at least one movable connection part 10. That is, the movable connection part 10 may be provided at one end of one of the two branch girders, or the movable connection part 10 may be provided at both ends of the two branch girders, or the movable connection part 10 may be provided at one end of each of the two branch girders 3 and the fixed connection part 11 at the other end.

[0048] As shown in FIG. 11, the movable connecting part 10 includes a base 10-1, a third joint bearing 10-2, and a connecting rod 10-3. There are two bases 10-1, each fixedly connected to two adjacent side walls of the two branch girders 3. There are two third joint bearings 10-2, each provided on one of the two bases 10-1. The connecting rod 10-3 is provided between the two third joint bearings 10-2. In the specific embodiment shown in FIG. 11, the base 10-1 includes a mounting plate 10-1-1 and double lugs 10-1-2. The mounting plate 10-1-1 is provided with a set of fixing holes 10-1-3, which are fixedly connected to the branch beam by bolts or rivets. The inner ring of the third joint bearing 10-2 is connected to the double lugs 10-1-2 by a pin 10-4, and the outer ring of the third joint bearing 10-2 is fixedly connected to the connecting rod 10-3.

[0023] It should be understood that the drawings only show a reference example, and in a specific structure, the third joint bearing 10-2 does not necessarily have to be connected to the base 10-1 by a double lug 10-1-2 connection. Alternatively, the outer ring of the third joint bearing 10-2 may be connected to the base 10-1 and the inner ring of the third joint bearing 10-2 may be connected to the connecting rod 10-3. Various specific structural changes can be designed according to actual needs, but the overall plan is always to connect the two bases 10-1 by the third joint bearing 10-2 and the connecting rod 10-3. In this way, connecting the two branch girders 3 with the movable connecting element 10 not only ensures the spacing and positional relationship between the two branch girders, but also allows the third joint bearing 10-2 to release degrees of freedom. When the branch girders 3 are deformed due to temperature or vibration, the third joint bearing 10-2 can release the corresponding stress and reduce the stress concentration inside the branch girders, thereby avoiding damage to the connecting structure due to rigid connections and extending the service life of the branch girders. If only one movable connecting part 10 is provided in the connecting structure, the movable connecting part 10 is preferably provided at the end where the spacing between the branch girders 3 is large or at the end where the movement distance of the branch girders 3 is large, and generally the movable connecting part 10 is provided at the end where the distance to the rotating device of the branch girders 3 is large.When using the movable connecting element 10, there is no need to consider the structural shape of the branch girder. For example, it can be used for a straight branch girder or a curved branch girder. The third joint bearing 10-2 allows the base 10-1 to adapt to the structural shape of the branch girder. If the arc of the branch girder is too large and exceeds the adaptable range of the third joint bearing 10-2, the base 10-1 must be provided with a slope to adapt to the mounting engagement with the branch girder. The slope can be selectively provided and attached to the base on the branch girder side with the larger arc. If both sides are arc-shaped branch girder, a slope can be attached to both sides.

[0049] In order to adapt to branch girders with different intervals, the connecting rod 10-3 of the movable connecting element 10 can be adjusted in length. As shown in FIG. 12, the specific structure includes a threaded sleeve 10-3-1 and a pair of threaded rods 10-3-2. Both ends of the threaded sleeve 10-3-1 are respectively connected to the two threaded rods 10-3-2 by threading. The threaded rods 10-3-2 are fixedly connected to the third joint bearing 10-2. The thread directions of the two threaded rods 10-3-2 are opposite to each other, so that When the threaded sleeve 10-3-1 is screwed together, the two threaded rods 10-3-2 extend or retract relative to the threaded sleeve 10-3-1, thereby adjusting the length of the connecting rod 10-3. A lock nut 10-3-3 is further provided on each threaded rod 10-3-2. After adjusting the length, the lock nut 10-3-3 can be tightened to lock the length of the connecting rod 10-3, preventing changes in length due to vibration from changing the spacing and relative position of the branch beams. Of course, the illustrated example is merely an example. In practice, the positions of the threaded rods 10-3-2 and the threaded sleeves 10-3-1 may be interchanged, i.e., a threaded rod 10-3-2 may be provided in the middle, and the threaded sleeves 10-3-1 may be connected to the third coupling bearings 10-2 at both ends. Similarly, the locking mechanism does not necessarily require the use of lock nuts 10-3-3; a common locking mechanism such as a screw jack may also be used for locking.

[0050] The connection structure further includes a fixed connection component. As shown in FIG. 13, the fixed connection component 11 includes an intermediate pile 11-1, with a first connection plate 11-2 and a second connection plate 11-3 connected to both ends of the intermediate pile 11-1. The first connection plate 11-2 and the second connection plate 11-3 can be fixedly connected to two branch girders, respectively. To accommodate different branch girders, the first connection plate 11-2 and the second connection plate 11-3 are provided with slopes based on the structural shape of the branch girders to accommodate the arc-shaped branch girders, facilitating connection to the branch girders. To accommodate the spacing between the tracks, backing plates 11-4 are provided between the intermediate pile 11-1 and the first connection plate 11-2 and / or the second connection plate 11-3. The length of the fixed connection component 11 can be adjusted by increasing or changing the thickness of the backing plate 11-4 to eliminate assembly errors and accommodate the spacing between the branch girders.

[0051] Locking mechanism As shown in Figure 14, the locking mechanism includes a thrust rod 8-1, a lock pin 8-2, a guide slide base 8-3, and a lock base 8-4. The thrust rod 8-1 and the guide slide base 8-3 are generally attached to fixed track girders, such as the front and rear girders of the track switching system. The lock pin 8-2 is slidably mounted on the guide slide base 8-3 and connected to the thrust rod 8-1. The lock base 8-4 is mounted on the branch girder 3. The thrust rod 8-1 thrusts the lock pin 8-2 to move within the guide slide base 8-3. The lock base 8-4 is fixed to the branch girder 3. After the branch girder 3 abuts against the front and rear girders 1 and 2, the thrust rod 8-1 drives the lock pin 8-2 to insert into the lock base 8-4, locking the position of the branch girder 3. The thrust rod 8-1 may be an electric push rod or a hydraulic rod. When an electric push rod is used as the thrust rod 8-1, its stroke can be controlled by a PLC, or it may have its own stroke limit, thereby controlling the depth of insertion of the lock pin 8-2 into the lock base 8-4. To more easily control the stroke of the lock pin 8-2, the lock mechanism is further provided with a limit switch 8-5, which controls the stroke of the thrust rod 8-1. In this embodiment, the limit switch 8-5 is provided on the lock base 8-4. When the lock pin 8-2 reaches a predetermined depth into the lock base 8-4, it contacts the limit switch 8-5, thereby stopping the thrust of the thrust rod 8-1. When the switch girder needs to perform a track switching operation, the thrust rod 8-1 drives the lock pin 8-2 to separate from the lock base 8-4, and the switch girder 3 then rotates to switch tracks.

[0052] compensation plate As shown in Figure 15, compensating plates 9 are provided at the joint ends of the branch girder 3, front girder 1, and rear girder 2. The compensating plates 9 are toothed and are installed on the side walls of the branch girder 3, front girder 1, and rear girder 2. After the branch girder 3 is joined to the front girder 1 and rear girder 2, the compensating plates 9 engage with each other to fill the notches at the compensation positions, thereby compensating for the gaps at the joint positions. If the joining gap were a straight gap, there would be a lot of vibration when the guide wheel passes through, so by using a diagonally lined toothed joining end face, the guide wheel is always supported by the engaged gap, reducing vibration.

[0053] The track switching system integrates the above devices and mechanisms, and the rotating device, connecting device, and running mechanism all use coupling bearings to adaptively adjust their positional relationships, compensating for engagement errors in the switch girder caused by temperature and vibration factors and providing stable support and operating conditions, and the mounting positions of the crowning gear and rack assembly of the rotating drive mechanism can adapt to the expansion and contraction deformation of the switch girder to provide stable driving. The combination of the above devices and mechanisms improves the overall stability of the suspended monorail vehicle track switching system.

[0054] The above description is merely illustrative of specific embodiments of the present application and does not limit the scope of the present application. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present application should fall within the scope of protection of the present application. It should be noted that the components of the present application are not limited to the overall application described above, and the technical features described in the specification of the present application may be selected and used alone or in combination according to actual needs. Therefore, it is to be understood that the present application covers other combinations and specific applications related to the features of the present invention.

Claims

1. A suspended monorail vehicle track switching system including a front end girder (1), a rear end girder (2), a branch girder (3), and a portal frame girder (4), wherein one front end girder (1), two rear end girders (2), and two branch girders (3) are provided to connect the front end girder (1) and the rear end girder (2), and at least two portal frame girders (4) are provided, each suspending the branch girder (3) adjacent to both ends thereof, A rotation device (5) is provided between the portal frame girder (4) at the end adjacent to the rear-end girder (2) and one of the branch girders (3), and the branch girder (3) rotates around the rotation device (5). A rotation drive mechanism (6) that drives the branch girder (3) to rotate around the rotation device (5) is provided between the portal frame girder (4) at the end adjacent to the front-end girder (1) and the branch girder (3). A traveling mechanism (7) that supports the branch girder (3) and enables it to travel is provided between the portal frame girder (4) and the branch girder (3). A locking mechanism (8) is provided on each of the front-end girder (1) and the two rear-end girders (2), and a pair of connecting devices that connect the two branch girders (3) are provided between the two branch girders (3). The traveling mechanism (7) includes a traveling rail (7-1) attached to the portal frame girder (4) and a set of roller assemblies (7-2) connected to the branch girder (3), the roller assembly (7-2) includes a support base (7-2-1), a support shaft (7-2-2) and rollers (7-2-3), each of the rollers (7-2-3) rolls on the traveling rail (7-1) along a horizontal plane, and a first coupling bearing (7-2-4) is provided between the roller (7-2-3) and the support shaft (7-2-2); The rotation drive mechanism (6) includes a power train (6-1), a crowning gear (6-2), and a rack assembly (6-3), the crowning gear (6-2) is provided at a power output end of the power train (6-1), the power train (6-1) is attached to a branch girder (3), the axis of the crowning gear (6-2) is directed toward the axis of the rotation device (5) and is parallel to a horizontal plane, and the rack assembly (6-3) is attached to a portal frame girder (4) and includes a set of spur tooth racks (6-3-1) arranged and combined in an arc shape, The pair of connection devices includes a movable connection part (10) provided on one end side of the two branch girders (3) so as to be closer to the rotation drive mechanism (6) than the rotation device (5), and a fixed connection part (11) provided on the other end side of the two branch girders (3) so as to be closer to the rotation device (5) than the rotation drive mechanism (6), The movable connection part (10) includes a pair of bases (10-1) fixedly connected to the two branch girders (3), respectively, a pair of third joint bearings (10-2) provided on the pair of bases (10-1), respectively, and a connecting rod (10-3) hingedly connected to the pair of third joint bearings (10-2) so as to be located between the pair of third joint bearings (10-2), The fixed connection part (11) includes a first connection plate (11-2) and a second connection plate (11-3) connected to the two branch girders (3), respectively, and an intermediate pile (11-1) fixed between the first connection plate (11-2) and the second connection plate (11-3). A suspended monorail vehicle track switching system.

2. A guide wheel compensator (9) is provided at the connection point between the front end spar (1), the branch spar (3), and the rear end spar (2), and the compensator (9) engages with the tooth profile to fill the gap.

2. The suspended monorail vehicle track switching system according to claim 1.

3. The center of the arc formed by arranging and combining the spur tooth racks (6-3-1) is concentric with the rotation center of the branch girder (3), and the power train (6-1) includes a motor and a reducer.

2. The suspended monorail vehicle track switching system according to claim 1.

4. The axis of each roller (7-2-3) is directed toward the axis of the rotating device (5).

2. The suspended monorail vehicle track switching system according to claim 1.

5. The running rail (7-1) is arc-shaped, and the center of the arc is concentric with the center of the rotating device (5).

5. The track switching system for a suspended monorail vehicle according to claim 4.

6. The traveling rail (7-1) and roller assembly (7-2) are provided at the end remote from the rotating device (5), a slide rail (7-3) is provided on the portal frame girder (4) on the side close to the rotating device (5), a carriage (7-4) slidably provided on the slide rail (7-3) is attached to the branch girder (3), and stopper plates (7-3-1) are provided on both ends of the slide rail (7-3).

6. The track switching system for a suspended monorail vehicle according to claim 4 or 5.

7. A pair of carriages (7-4) is provided on both sides of each of the branch beams (3).

7. The track switching system for a suspended monorail vehicle according to claim 6.

8. The slide rail (7-3) is provided with a copper plate (7-3-2) that slides against the carriage (7-4).

7. The track switching system for a suspended monorail vehicle according to claim 6.

9. The slide rails (7-3) and the carriages (7-4) are matched in number and position, and each slide rail (7-3) is arc-shaped, with the center of the arc concentric with the center of the rotation device (5).

8. The track switching system for a suspended monorail vehicle according to claim 7.

10. The rotation device (5) includes an upper fixed base (5-1) and a lower fixed base (5-2), and a second joint bearing (5-3) is provided between the upper fixed base (5-1) and the lower fixed base (5-2).

2. The suspended monorail vehicle track switching system according to claim 1.

11. The upper fixed base (5-1) is provided with a cavity (5-1-1) that restricts the outer ring of the second joint bearing (5-3), the lower fixed base (5-2) is provided with a rotating shaft (5-4) that can be engaged with the inner ring of the second joint bearing (5-3), and a seal ring (5-5) is provided between the upper fixed base (5-1) and the rotating shaft (5-4).

11. The track switching system for a suspended monorail vehicle according to claim 10.

12. The upper fixed base (5-1) includes an upper fixed column (5-1-2) and an upper fixed flange (5-1-3), the cavity (5-1-1) is provided in the upper fixed column (5-1-2), the lower fixed base (5-2) includes a lower fixed column (5-2-1) and a lower fixed flange (5-2-2), and the rotation shaft (5-4) is provided on the lower fixed column (5-2-1).

12. The track switching system for a suspended monorail vehicle according to claim 11.

13. A pair of reinforcing ribs (5-6) is provided between the upper fixed column (5-1-2) and the upper fixed flange (5-1-3), and between the lower fixed column (5-2-1) and the lower fixed flange (5-2-2).

13. The suspended monorail vehicle track switching system according to claim 12.

14. The rotating shaft (5-4) and the lower fixed column (5-2-1) are integrated.

13. The suspended monorail vehicle track switching system according to claim 12.

15. The rotating shaft (5-4) and the lower fixed column (5-2-1) are connected by a flange.

13. The suspended monorail vehicle track switching system according to claim 12.

16. A retaining ring (5-7) is provided at the end of the upper fixed column (5-1-2) to prevent the second joint bearing (5-3) from coming out of the cavity (5-1-1), and the seal ring (5-5) is provided between the retaining ring (5-7) and the rotating shaft (5-4).

13. The suspended monorail vehicle track switching system according to claim 12.

17. A stopper boss (5-1-4) is provided in the cavity (5-1-1), and a retaining ring (5-7) is attached to the end of the upper fixed column (5-1-2) to press the second joint bearing (5-3) against the stopper boss (5-1-4).

13. The suspended monorail vehicle track switching system according to claim 12.

18. A bearing sleeve (5-8) is provided between the retaining ring (5-7) and the outer ring of the second coupling bearing (5-3).

18. The suspended monorail vehicle track switching system according to claim 17.

19. The connecting rod (10-3) has an adjustable length, and at least one of the bases (10-1) has a slope on the side connected to the branch beam (3).

2. The suspended monorail vehicle track switching system according to claim 1.

20. The connecting rod (10-3) includes a threaded sleeve (10-3-1), threaded rods (10-3-2) are screwed onto both ends of the threaded sleeve (10-3-1), each threaded rod (10-3-2) is connected to a third joint bearing (10-2) on the corresponding side, and a lock nut (10-3-3) is further provided on each threaded rod (10-3-2).

20. The suspended monorail vehicle track switching system according to claim 19.

21. The first connecting plate (11-2) and the second connecting plate (11-3) are connected to the intermediate pile (11-1) by flanges, a slope is provided on at least one of the first connecting plate (11-2) and the second connecting plate (11-3), and a backing plate (11-4) is provided between the intermediate pile (11-1) and the first connecting plate (11-2) and / or the second connecting plate (11-3).

2. The suspended monorail vehicle track switching system according to claim 1.

22. The movable connecting part (10) is provided at the end remote from the rotating device (5), and the fixed connecting part (11) is provided at the end close to the rotating device (5).

22. The suspended monorail vehicle track switching system according to claim 21.

23. The lock mechanism (8) includes a thrust rod (8-1), a lock pin (8-2), a guide slide base (8-3), and a lock base (8-4). The lock pin (8-2) is slidably mounted on the guide slide base (8-3) and connected to the thrust rod (8-1). The thrust rod (8-1) and the guide slide base (8-3) are mounted on the leading spar (1) or the trailing spar (2). The lock base (8-4) is mounted on the branch spar (3). The thrust rod (8-1) drives the lock pin (8-2) to be inserted into or removed from the lock base (8-4).

2. The suspended monorail vehicle track switching system according to claim 1.

24. The thrust rod (8-1) is an electric push rod or a hydraulic rod.

24. The suspended monorail vehicle track switching system according to claim 23.

25. The lock mechanism (8) further includes a limit switch (8-5), and the limit switch (8-5) is provided on the lock base (8-4).

24. The suspended monorail vehicle track switching system according to claim 23.

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