A three-track line-changing system for suspended track beams

Abstract

The invention discloses a suspended track beam three-track line changing system, comprising a front stack beam, three switch beams and three rear stack beams, wherein the switch beam connects the front stack beam and the corresponding rear stack beam by rotating to realize line changing, and also comprises a slewing device, a slewing drive mechanism, a running mechanism, a locking compensation mechanism, and a connecting device for connecting two adjacent switch beams. The system has a reasonable structure and stable operation, and can compensate for the influence of factors such as ambient temperature, assembly error, vibration and the like on the system.

Description

Technical Field

[0001] The invention relates to the field of suspended track beams, and in particular to a suspended track three-lane vehicle line-changing system. Background Art

[0002] Suspended rail transit is a popular form of rail transit system in recent years. In suspended rail transit, a line changing system is also provided to facilitate train line changing. The three-track vehicle line changing system connects the stack beams in different directions at both ends through the switch beam. A front stack beam is switched through the switch beam to guide the train into three different rear stack beams. Existing line changing systems such as patent applications 202010386333.8 and 202110282480.5 use a single switch beam to achieve line changing and vehicle guidance. Under this structure, the front stack beam and the switch beam have a large turning angle at the connection, the vehicle passing is not smooth, and the driving speed cannot be too high. In addition, different driving modes are involved in the above-mentioned documents: gear drive and push rod drive. Compared with push rod drive, gear drive is more stable and controllable. However, in the gear drive mode given in the above-mentioned documents, since the gear axis is perpendicular to the ground, the switch beam is affected by factors such as ambient temperature or vibration, which will destroy the meshing relationship between the gear and the rack, thereby causing jamming, or causing the gear rack to mesh imperfectly and have a gap that affects the smooth operation of the switch beam. In addition, the guide wheels in the running mechanism that provide support for the turnout beam in the above patent application are all rigid structures. Due to assembly errors, ambient temperature, vibration of the turnout beam and other factors, some guide wheels in the running mechanism cannot perfectly contact the running track, affecting the stability and smoothness of the turnout beam operation. In addition to the above problems, the above patent application also has the problem that the slewing device is a rigid structure and cannot achieve error compensation, and the connection device between the turnout beams is a rigid structure and cannot achieve error compensation. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, a suspended track single-open vehicle line-changing system is provided, which has a reasonable structure, stable operation, and a function of compensating for the deformation of the switch beam caused by factors such as ambient temperature and vibration. The technical solution adopted by the present invention is: a suspended track beam three-track line-changing system, including a front stack beam, a switch beam, a rear stack beam and a gantry beam, wherein one front stack beam is provided, and three switch beams and three rear stack beams are provided. The switch beam is rotated to make the corresponding switch beam connect the corresponding rear stack beam and the front stack beam to realize the line-changing action. At least two gantry beams are provided, respectively close to the two ends of the turnout beam, for hanging the turnout beam; a slewing device for the turnout beam to rotate around is provided between the gantry beam near one end of the rear stack beam and one of the turnout beams; a slewing driving mechanism for driving the turnout beam to rotate around the slewing device is provided between the gantry beam near one end of the front stack beam and the turnout beam; a running mechanism for providing support for the turnout beam and realizing walking is provided between the gantry beam and the turnout beam; a locking compensation mechanism is provided on the front stack beam and each rear stack beam; and a connecting device is provided between two adjacent turnout beams;

[0004] The running mechanism includes a running track installed on the gantry beam and a group of roller assemblies connected to the turnout beam, the roller assembly includes a support seat, a support shaft and a roller, each of the rollers rolls along a horizontal plane on the running track, and a first joint bearing is arranged between the roller and the support shaft;

[0005] The slewing drive mechanism includes a power assembly, a drum gear and a rack assembly, wherein the drum gear is arranged at the power output end of the power assembly, the power assembly is installed on the turnout beam, the axis of the drum gear points to the axis of the slewing device and is parallel to the horizontal plane, and the rack assembly is installed on the portal beam and includes a group of straight racks arranged in an arc shape;

[0006] The locking compensation mechanism includes a locking device, a linkage device and a compensation plate. The locking device can realize the locking or unlocking action of the turnout beam. When performing the locking or unlocking action, the locking compensation mechanism can drive the linkage device to drive the compensation plate to realize vertical lifting.

[0007] Furthermore, guide wheel compensation plates are provided at the joints of the front stack beam, the turnout beam and the rear stack beam, and the guide wheel compensation plates are tooth-shaped and butt-jointed to cooperate with each other to fill the gap.

[0008] Furthermore, the center of the arc formed by the straight rack arrangement combination is concentric with the rotation center of the turnout beam; and the power assembly includes a motor and a reducer.

[0009] Furthermore, the axis of each roller points to the axis of the rotary device. Furthermore, a running track is provided on the portal beam at one end away from the rotary device, and three running tracks corresponding to the positions of each switch beam are provided on the portal beam at one end close to the rotary device.

[0010] Further, the running track is arc-shaped and the arc center is concentric with the center of the rotary device. Further, the rotary device includes an upper fixed seat and a lower fixed seat, and a second joint bearing is arranged between the upper fixed seat and the lower fixed seat. Further, the upper fixed seat is provided with an inner cavity for limiting the outer ring of the second joint bearing, and the lower fixed seat is provided with a rotary shaft that can be clamped into the inner ring of the second joint bearing; a sealing ring is provided between the upper fixed seat and the rotary shaft.

[0011] Furthermore, the upper fixing seat includes an upper fixing column and an upper fixing flange, and the inner cavity is arranged in the upper fixing column; the lower fixing seat includes a lower fixing column and a lower fixing flange, and the rotating shaft is arranged on the lower fixing column.

[0012] Furthermore, a group of reinforcing ribs are provided between the upper fixing column and the upper fixing flange, and between the lower fixing column and the lower fixing flange.

[0013] Furthermore, the rotary shaft and the lower fixed column are integrally formed. Furthermore, the rotary shaft and the lower fixed column are connected together through a flange.

[0014] A retaining ring is arranged at the end of the upper fixed column to prevent the second joint bearing from falling off from the inner cavity, and the sealing ring is arranged between the retaining ring and the rotary shaft.

[0015] Furthermore, a limiting boss is provided in the inner cavity, and a retaining ring is installed at the end of the upper fixed column to tighten the second spherical bearing against the limiting boss.

[0016] Furthermore, a bearing sleeve is provided between the retaining ring and the outer ring of the second spherical bearing.

[0017] Furthermore, the connecting device is used to connect two adjacent turnout beams together, and at least one pair of connecting devices is arranged between the two adjacent turnout beams, and the pair of connecting devices respectively connect the pair of adjacent turnout beams together near the two ends of the turnout beams. The pair of connecting devices includes at least one movable connecting member, and the movable connecting member includes a pair of bases respectively fixed to the two adjacent turnout beams, and a third joint bearing is provided on each of the bases, and a connecting rod is provided between the pair of third joint bearings.

[0018] Furthermore, the length of the connecting rod is adjustable, and an inclined surface is provided on one side where at least one of the bases is connected to the turnout beam.

[0019] Furthermore, the connecting rod includes a threaded sleeve, and threaded rods are threadedly connected to both ends of the threaded sleeve. Each threaded rod is connected to the third joint bearing on one side, and a locking nut is also provided on each threaded rod.

[0020] Furthermore, the pair of connecting devices also includes a fixed connecting member, and the fixed connecting member includes an intermediate pile, and a first connecting plate and a second connecting plate respectively connected to two adjacent turnout beams are connected to both ends of the intermediate pile.

[0021] Furthermore, the first connecting plate and the second connecting plate are connected to the middle pile through flanges, and at least one of the first connecting plate and the second connecting plate is provided with an inclined surface; a pad is provided between the middle pile and the first connecting plate and / or the second connecting plate. Furthermore, the movable connecting member is provided at the end of the turnout beam with a larger travel distance, and the fixed connecting member is provided at the end of the turnout beam with a smaller travel distance. Furthermore, the linkage device and the compensation plate are symmetrically provided in pairs on both sides of the track beam.

[0022] Furthermore, the locking device includes a thrust rod, a guide seat, a locking seat and a locking pin. The locking pin is connected to the thrust rod and slidably arranged in the guide seat. The thrust rod can push the locking pin to be inserted into the locking seat to lock the turnout beam.

[0023] Furthermore, the thrust rod is an electric push rod or a hydraulic rod. Furthermore, the linkage device includes a slideway, a connecting rod, and a lifting rod. The connecting rod is connected to a locking device and is slidably arranged in the slideway. The locking device can drive the connecting rod to move along the slideway. The two ends of the lifting rod are respectively hinged to the connecting rod and the compensation plate. A guide groove is also provided on the side wall of the track beam in the vertical direction. The hinged part at the hinge of the lifting rod and the compensation plate is slidably arranged in the guide groove.

[0024] Furthermore, a lifting lug hinged to the lifting rod is provided on the compensation plate, and the lifting lug is located on the center line of the compensation plate.

[0025] Furthermore, the compensation plate is fixedly connected to the hinge pin at the hinge of the lifting rod, and one end of the hinge pin located in the guide groove is a rectangular slider or a pin with a plane.

[0026] Furthermore, support ribs extending out of the end faces are provided at the bottom of the front stack beam, rear stack beam and switch beam, and baffles that can be clamped on the support ribs of the track beam and switch beam are provided at the bottom of the compensation plate.

[0027] The line-changing system adopts the above-mentioned structure, and three switch beams are respectively connected to three rear stack beams to realize line-changing, so that the transition between the rear stack beam and the front stack beam is smoother, and the switch beam is used for three-track vehicle line-changing by rotating, so as to avoid unstable operation caused by excessive movement distance of the switch beam, and at the same time avoid problems such as large vehicle operation noise caused by excessive gap at the joint. The roller of the running mechanism can compensate for the problem that the roller and the running track cannot be fully contacted due to ambient temperature, vibration and assembly error through the first joint bearing, so that the roller adapts to the matching relationship with the running track, so that the roller and the running track are fully contacted, thereby improving the operation stability of the switch beam during rotation; the rotary drive mechanism adopts a drum gear, and the axis of the drum gear is parallel to the horizontal plane to eliminate the problem of unstable operation of the running mechanism caused by the expansion and contraction of the switch beam, and further improve the operation stability; the locking compensation mechanism realizes linkage, and locking and compensation are realized simultaneously by a power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the line changing system of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the running mechanism of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the roller group of the running mechanism of the present invention;

[0031] Figure 4 It is a schematic diagram of the sliding guide rail structure of the running mechanism of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the rotary drive mechanism of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the rack assembly of the rotary drive mechanism of the present invention;

[0034] Figure 7 It is a schematic diagram of the power assembly structure of the rotary drive mechanism of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the rotary device of the present invention;

[0036] Fig. 9 It is a cross-sectional view of the rotary device of the present invention;

[0037] Fig.10 A schematic diagram of the connection structure of the connection device of the present invention connected to the turnout beam;

[0038] Fig.11 This is a schematic diagram of the structure of the movable connecting member of the connecting device of the present invention;

[0039] Fig.12 A cross-sectional view of a movable connecting member of a connecting device of the present invention;

[0040] Fig.13 This is a schematic diagram of the structure of the fixed connecting piece of the connecting device of the present invention;

[0041] Fig.14 This is a schematic diagram of the locking compensation mechanism structure of the present invention;

[0042] Fig.15 This is a schematic diagram of the locking compensation mechanism of the present invention from a bottom-up perspective;

[0043] Fig.16 It is a schematic diagram of the structure of the guide wheel compensation plate of the present invention. DETAILED DESCRIPTION

[0044] In order to better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] like Figure 1 The suspended track beam three-track line-changing system shown includes a front stack beam 1 and a rear stack beam 3. Since the technical solution involves a three-track vehicle line-changing system, the front stack beam 1 is designed as one, and the rear stack beam 3 is designed as three. In order to improve driving smoothness and reduce the turning angle of the front stack beam and the rear stack beam in the transition stage, the corresponding turnout beam 2 is also designed as three, and the turnout beam 2 and the rear stack beam 3 are in a one-to-one correspondence, such as Figure 1The two outer curved rear stack beams 3 are respectively connected to the front stack beam 1 through the two outer curved switch beams 2, and the straight rear stack beam 3 in the middle position is connected to the front stack beam 1 through the straight switch beam 2 in the middle position. The line changing process makes the rear stack beam 3 and the front stack beam 1 connected through the corresponding switch beam 2 through the rotation movement of the switch beam 2, guiding the vehicle to change the line, that is, the vehicle can enter any lane of the rear stack beam 3 from the front stack beam 1, or can enter the front stack beam 1 from any rear stack beam 3. Since three switch beams 2 are used to connect the three rear stack beams 3 respectively, the rotation angle of the switch beam 2 is small, and the connection between the switch beam 2 and the front stack beam 1 and the rear stack beam 3 is more reasonable. Therefore, the switch beam 2 in the line changing system plays an important role and is a key link in guiding the vehicle into the correct line. At least one pair of gantry beams 4 is provided in the line changing system to realize the suspension support of the switch beam 2. In order to enable the switch beam 2 to rotate around a fixed point, a pair of gantry beams 4 are provided between the switch beam 2 and the gantry beam 4. A slewing device 5 is arranged between the turnout beams 2, and the slewing device 5 provides a slewing center positioning point, so that the turnout beam 2 rotates around the slewing device 5 as the center. Since the turnout beam 2 is designed to be three, in order to balance and ensure that the turnout beams on both sides have the same rotation angle, the slewing device 5 is arranged on the turnout beam 2 located in the middle position. A slewing drive mechanism 6 is also arranged between the turnout beam 2 and the portal beam 4, and the slewing drive mechanism 6 provides power to drive the turnout beam 2 to rotate around the slewing device 5. In order to enable the turnout beam 2 to be suspended and travel along a fixed route, a running mechanism 7 is arranged between the portal beam 4 and the turnout beam 2. Since the slewing device 5 is only arranged on one of the turnout beams 2, in order to enable the three turnout beams 2 to perform synchronous and concentric slewing motion, the three turnout beams 2 need to be connected. Therefore, a connecting device is also arranged between two adjacent turnout beams 2. The connecting device is not only used to connect the turnout beams 2 to achieve synchronous motion, but also can ensure that the positional relationship between the two adjacent turnout beams 2 remains unchanged. In order to ensure that the switch beam 2 is accurately positioned and prevented from loosening after the line changing operation is completed, a locking compensation mechanism 8 is provided on the front stack beam 1 and the rear stack beam 3 to lock the switch beam 2 after it is connected with the front stack beam 1 and the rear stack beam 3. At the same time, the gap between the switch beam and the front stack beam and the rear stack beam is compensated for the running part of the running wheels to improve the stability of the running wheels. In this scheme, for the sake of simplicity, the front stack beam and the rear stack beam are collectively referred to as track beams. This is explained here for easy understanding. In addition to compensating for the running wheel part, guide wheel compensation plates are also provided on the front stack beam, the rear stack beam and the switch beam to compensate for the gap between the guide wheels.

[0046] The following is a further description of the various devices and mechanism structures in the line changing system in conjunction with the accompanying drawings:

[0047] Running mechanism:

[0048] like Figure 2The running mechanism 7 shown includes a running track 7-1 and a group of roller assemblies 7-2, wherein the running track 7-1 is connected and fixed on the portal beam 4, and the roller assembly 7-2 is connected to the switch beam 2, and the switch beam 2 is suspended by the roller assembly 7-2.

[0049] like Figure 3 The roller assembly 7-2 shown includes a support seat 7-2-1, a support shaft 7-2-2 and a roller 7-2-3, the support seat 7-2-1 is connected to the turnout beam 2, the support shaft 7-2-2 is arranged on the support seat 7-2-1 for installing the roller 7-2-3, and a first joint bearing 7-2-4 is arranged between the roller 7-2-3 and the support shaft 7-2-2, wherein the roller 7-2-3 cooperates with the running track 7-1 to be able to roll along the horizontal plane on the running track 7-1. Due to assembly errors, thermal deformation and vibration caused by driving, if the roller 7-2-3 is directly rigidly connected to the support shaft 7-2-2, the roller 7-2-3 will not be able to fully contact the running track 7-1. For example, if one of the rollers 7-2-3 is installed too low to support the turnout beam 2, the remaining rollers 7-2-3 cannot contact or fully contact the running track 7-1, so that the roller assembly 7-2 is subjected to excessive force, resulting in unstable support and affecting the walking stability. After the first joint bearing 7-2-4 is set between the support shaft 7-2-2 and the roller 7-2-3, each roller 7-2-3 can be adaptively adjusted to achieve full contact with the running track 7-1, thereby providing better support for the turnout beam 2 and making the walking more stable.

[0050] like Figure 1 When the turnout beam shown in the figure moves by rotating, the axis of each roller 7-2-3 intersects with the axis of the rotary device 5, so that the roller can roll better during the walking process. Of course, the intersection of the roller axis and the rotation axis here is theoretical, and it is impossible to be so perfect in actual assembly, but the main purpose is to make the roller axis point to the axis of the rotary device 5, so that the roller can move along the arc, which conforms to the rotation characteristics of the turnout beam 2 and minimizes the roller sliding friction. If the area of ​​the running track 7-1 is large enough, if there is enough space for the roller 7-2-3 to move, the shape and specifications of the running track do not need to be limited, and if the following is adopted Figure 2 The running track 7-1 is only set in the area where the roller 7-2-3 travels. In this case, the running track 7-1 needs to be set in an arc shape, and the arc center of the running track 7-1 is concentric with the rotation center of the turnout beam 2.

[0051] In this line-changing system, since the travel distances of the two ends of the turnout beam 2 far from the rotation center and near the rotation center are different, the end far from the rotation center has a larger travel distance and sufficient installation space, so it is sufficient to install a running track 7-1 on the portal beam 4 far from the rotating device 5, while the travel distance near the rotation center is smaller, and it is necessary to set three sections of the running track 7-1 to correspond to the positions of each turnout beam 2. Both the running track 7-1 far from the rotating device 5 and the running track 7-1 near the rotating device 5 are arc-shaped, and the arc center is kept concentric with the rotation center of the turnout beam 2.

[0052] Rotary drive mechanism

[0053] like Figure 5 It includes a power assembly 6-1 installed on the turnout beam 2, a rack assembly 6-3 installed on the portal beam 4, a drum gear 6-2 installed on the power assembly 6-1 and meshing with the rack assembly 6-3, when the power assembly 6-1 drives the drum gear 6-2 to move along the rack assembly 6-3, it drives the turnout beam 2 to rotate around its rotating device 5.

[0054] like Figure 6 The rack assembly shown includes a group of spur racks 6-3-1, which are arranged in an arc shape. Figure 7 The powertrain 6-1 shown in the figure includes a motor and a reducer, and the drum gear 6-2 is installed on the reducer. Figure 5 and Figure 1 As shown, in order to realize walking along the arc, the axis of the drum gear 6-2 is parallel to the horizontal plane and points to the axis of the rotating device 5, and the arc center formed by the spur rack 6-3-1 is concentric with the rotation center of the turnout beam. Although the rack assembly 6-3 is formed by splicing and arranging spur racks 6-3-1, the drum gear 6-2 is used, so the teeth of the drum gear 6-2 and the spur rack 6-3-1 can maintain a meshing relationship within a small range, and 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 arranged rack assembly 6-3 tends to be a regular arc (it should be noted here that in a strict sense, the arrangement shape of the rack assembly should be a part of a polygon, but it tends to be an arc from the overall point of view, so we can consider it as an arc here). When the rack assembly 6-3 and the drum gear 6-2 are matched, even if the turnout beam 2 is deformed, the drum gear 6-2 moves axially without affecting the meshing relationship between the drum gear 6-2 and each spur rack 6-3-1. Therefore, the drive mechanism can not only meet the rotary drive, but also eliminate the influence of the deformation of the turnout beam on the operation stability of the drive mechanism.

[0055] The rotary drive mechanism should be installed as far away from the rotary device 5 as possible. Since the end of the turnout beam 2 moves a long distance away from the rotary device 5, there is enough installation space and the load when the rotary drive mechanism is driven can be reduced as much as possible.

[0056] Rotating device

[0057] like Figure 8 and Fig. 9 The rotating device 5 shown includes an upper fixed seat 5-1 and a lower fixed seat 5-2, and a second joint bearing 5-3 is arranged between the upper fixed seat 5-1 and the lower fixed seat 5-2, wherein the upper fixed seat 5-1 and the lower fixed seat 5-2 are respectively connected to the portal beam 4 and the turnout beam 2. In order to facilitate the installation of the second joint bearing 5-3, an inner cavity 5-1-1 is provided in the upper fixed seat 5-1, and the second joint bearing 5-3 is arranged in the inner cavity 5-1-1. The outer ring of the second joint bearing 5-3 contacts the inner wall of the inner cavity 5-1-1 to limit the shaking of the second joint bearing 5-3 in the inner cavity 5-1-1. The second joint bearing 5-3 can also be directly inserted into the inner cavity 5-1-1 by interference fit, so that the second joint bearing 5-3 is directly fixed in the inner cavity 5-1-1. A rotating shaft 5-4 is arranged on the lower fixed seat 5-2, and the rotating shaft 5-4 is inserted into the inner ring of the second joint bearing 5-3. In order to make the second joint bearing 5-3 run smoothly, the second joint bearing 5-3 also needs to be lubricated. In order to avoid leakage of lubricating oil, a sealing ring 5-5 is arranged between the upper fixed seat 5-1 and the rotating shaft 5-4.

[0058] like Fig. 9 The upper fixing seat 5-1 shown includes an upper fixing column 5-1-2 and an upper fixing flange

[0059] 5-1-3, the inner cavity is set in the upper fixed column 5-1-2, and a retaining ring 5-7 is set at the end of the upper fixed column 5-1-2 to prevent the second joint bearing 5-3 from falling off from the inner cavity 5-1-1. The retaining ring 5-7 and the upper fixed column 5-1-2 are integrally formed. When the second joint bearing 5-3 and the inner cavity 5-1-1 are assembled in a non-clamping state, the retaining ring 5-7 can prevent the second joint bearing 5-3 from falling off. A sleeve (equivalent to Fig. 9 The middle limit boss 5-1-4) presses against the outer ring of the second joint bearing 5-3, and clamps the second joint bearing 5-3 between the sleeve and the retaining ring 5-7 to achieve fixation. Of course, it can also be used Fig. 9In the embodiment given in the embodiment, the retaining ring 5-7 and the upper fixed column 5-1-2 are separately arranged and connected together by bolts, and a limiting boss 5-1-4 is arranged in the inner cavity 5-1-1, and the second joint bearing 5-3 is clamped between the limiting boss 5-1-4 by fixing the retaining ring 5-7 on the upper fixed column 5-1-2. In order to avoid assembly errors and improve the clamping effect of the retaining ring 5-7, a bearing sleeve 5-8 is arranged between the retaining ring 5-7 and the second joint bearing 5-3, and the second joint bearing 5-3 is clamped and fixed by the retaining ring 5-7 pressing the bearing sleeve 5-8. In this structure, the sealing ring 5-5 is arranged between the retaining ring 5-7 and the rotating shaft. The above-mentioned sealing ring 5-5 is sealed with felt.

[0060] like Fig. 9 The lower fixing seat 5-2 shown includes a lower fixing column 5-2-1 and a lower fixing flange 5-2-2. The rotary shaft 5-4 is arranged on the lower fixing column 5-2-1. The rotary shaft 5-4 and the lower fixing column 5-2-1 can be used as a whole, or as shown in FIG. Fig. 9 The rotating shaft 5-4 and the lower fixed column 5-2-1 are separately arranged and connected to the lower fixed column 5-2-1 through a flange. In order to stabilize the upper fixed column 5-1-2 and the lower fixed seat 5-2, a set of reinforcing ribs 5-6 are 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.

[0061] Connecting device

[0062] like Fig.10 The switch beam connection structure shown includes at least one pair of connection devices, which are used to connect two adjacent switch beams, thereby maintaining the spacing and positional relationship between the two adjacent switch beams. The pair of connection devices are installed at positions close to both ends of the switch beam. Of course, the connection structure can also add connection devices at the middle section of the switch beam 2 according to actual needs. At least one movable connection member 10 is provided in the pair of connection devices, that is, a movable connection member 10 is provided at one end between the two adjacent switch beams, and movable connection members 10 can also be provided at both ends of the two adjacent switch beams, or a movable connection member 10 is provided at one end of the two adjacent switch beams 2 and a fixed connection member 11 is provided at the other end.

[0063] like Fig.11 The movable connecting member 10 shown includes a base 10-1, a third joint bearing 10-2 and a connecting rod 10-3, wherein the base 10-1 includes two and is respectively fixedly connected to the adjacent two side walls of two adjacent turnout beams 2, the third joint bearing 10-2 has two and is respectively arranged on the two bases 10-1, and a connecting rod 10-3 is arranged between the two third joint bearings 10-2. Fig.11In the specific embodiment given, the base 10-1 includes a mounting plate 10-1-1 and two ears 10-1-2, and a group of fixing holes 10-1-3 are provided on the mounting plate 10-1-1. The mounting plate 10-1-1 is fixedly connected to the turnout beam by bolt connection or riveting. The inner ring of the third joint bearing 10-2 is connected to the two ears 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. Of course, only a reference embodiment is given in the figure. In the specific structure, the third joint bearing 10-2 does not necessarily have to be connected to the base 10-1 in the form of a connection with the two ears 10-1-2, and the outer ring of the third joint bearing can also be connected to the base 10-1. The third joint bearing The inner ring of the joint bearing 10-2 is connected to the connecting rod 10-3, and the changes in various specific structural forms can be designed according to actual needs, but the overall solution always connects the two bases 10-1 together through the third joint bearing 10-2 and the connecting rod 10-3. In this way, after the two adjacent turnout beams 2 are connected together through the movable connecting piece 10, the spacing and position relationship between the two adjacent turnout beams can be guaranteed, and the degree of freedom can be released through the third joint bearing 10-2. When the turnout beam 2 is deformed due to temperature or vibration, the third joint bearing 10-2 can release the corresponding stress, reduce the internal stress concentration of the turnout beam, thereby avoiding the rigid connection from damaging the connection structure and increasing the service life of the turnout beam. If only one movable connecting piece 10 is set in the connection structure, then the movable connecting piece 10 is preferably set at the end of the turnout beam 2 with a larger spacing, or at the end of the turnout beam 2 with a larger movable distance. Generally, the movable connecting piece 10 is set at the end of the turnout beam 2 that is farther from the rotating device. Moreover, when using the movable connecting member 10, there is no need to consider the structural shape of the turnout beam (straight turnout beam or curved turnout beam). The third joint bearing 10-2 can make the base 10-1 adapt to the structural shape of the turnout beam. If the curvature of the turnout beam is too large and exceeds the adaptive range of the third joint bearing 10-2, it is necessary to set an inclined surface on the base 10-1 to adapt to the installation cooperation with the turnout beam. The inclined surface is selectively set on the base on the side of the turnout beam with a larger curvature. If both sides are curved turnout beams, the inclined surface can be installed on both sides.

[0064] In order to adapt to the turnout beams with different spacings, the connecting rod in the movable connecting member 10

[0065] 10-3 can achieve length adjustment, the specific structure is as follows Fig.12 Shown with threaded sleeve

[0066] 10-3-1 and a pair of threaded rods 10-3-2, both ends of the threaded sleeve 10-3-1 are connected with the two threaded rods 10-3-2 respectively through threaded cooperation, the threaded rod 10-3-2 is fixedly connected with the third joint bearing 10-2, wherein the threads on the two threaded rods 10-3-2 are in opposite directions, when the threaded sleeve 10-3-1 is screwed, the two threaded rods 10-3-2 can be extended or retracted into the threaded sleeve 10-3-1 to adjust the length of the connecting rod 10-3, and a locking nut 10-3-3 is also provided on each threaded rod 10-3-2. After the length is adjusted, the length of the connecting rod 10-3 is locked by tightening the locking nut 10-3-3 to prevent the length change caused by vibration from changing the spacing and position relationship between the turnout beams. Of course, the figure only shows an embodiment. In practice, the positions of the threaded rod 10-3-2 and the threaded sleeve 10-3-1 can be interchanged, that is, the components arranged in the middle and connecting the two ends of the threaded rod 10-3-2 with the third joint bearing 10-2 are arranged as threaded sleeves 10-3-1. Similarly, the locking structure does not necessarily adopt the locking nut 10-3-3, and can also be locked by conventional locking structures such as top screws.

[0067] There is also a form in which a fixed connection piece is provided in the connection structure, such as Fig.13 The fixed connector 11 shown includes an intermediate pile 11-1, and a first connecting plate 11-2 and a second connecting plate 11-3 are connected at both ends of the intermediate pile 11-1. The first connecting plate 11-2 and the second connecting plate 11-3 can be fixedly connected to two adjacent turnout beams respectively. In order to adapt to turnout beams of different structural shapes, the first connecting plate 11-2 and the second connecting plate 11-3 can be provided with inclined surfaces according to the structural shape of the turnout beam to adapt to the contour of the curved turnout beam, so as to facilitate connection with the turnout beam. In order to adapt to the track spacing, a pad 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. By increasing the pad 11-4 or changing the thickness of the pad 11-4, the length of the fixed connector 11 can be adjusted, thereby eliminating assembly errors and adapting to the spacing between turnout beams.

[0068] Lock compensation mechanism

[0069] In this line-changing system, the switch beam 2 is connected to the track beam by movement. After the switch beam 2 moves, it needs to be locked and positioned when it is connected to the track beam to avoid the displacement of the switch beam 2 caused by vibration during vehicle operation. At the same time, the expansion joint between the switch beam 2 and the track beam needs to be compensated. In order to achieve the locking between the switch beam 2 and the track beam and compensate for the expansion joint, the locking and compensation mechanism 8 includes a locking device 8-1, a linkage device 8-2 and a compensation plate 8-3. When the switch beam 2 moves to the position where it is connected to the track beam, the locking device 8-1 can lock the switch beam 2 and the track beam in position. During the locking process, the locking device 8-1 drives the linkage device 8-2 to drive the compensation plate 8-3 to compensate for the gap position of the expansion joint. Similarly, during the unlocking process of the locking device 8-1, the linkage device 8-2 can be driven to drive the compensation plate 8-3 to leave the gap position of the expansion joint to make way for the movement of the switch beam, thereby not blocking the movement of the switch beam. During the locking and unlocking process of the locking device 8-1, the compensation plate 8-3 is lifted and lowered.

[0070] The specific structure is as follows Fig.14 As shown, the locking device 8-1 includes a thrust rod 8-1-1, a guide seat 8-1-2, a locking seat 8-1-3 and a locking pin 8-1-4. The thrust rod 8-1-1 and the guide seat 8-1-2 are fixed on the track beam, and the locking seat 8-1-3 is arranged on the turnout beam. The locking pin 8-1-4 is slidably arranged in the guide seat 8-1-2 and connected with the thrust rod 8-1-1. The thrust rod 8-1-1 can drive the locking pin 8-1-4 to move in the guide seat 8-1-2. When the turnout beam is docked with the track beam, the thrust rod 8-1-1 can drive the locking pin 8-1-4 to be inserted into the locking seat 8-1-3 to achieve the locking action of the track beam and the turnout beam 2. The unlocking process is the opposite, that is, the locking pin 8-1-4 is driven by the thrust rod 8-1-1 to disengage from the locking seat 8-1-3 to achieve unlocking. The thrust rod 8-1-1 can be an electric push rod or a hydraulic rod or other straight moving device.

[0071] The linkage device 8-2 includes a slide 8-2-1, a connecting rod 8-2-2, and a lifting rod 8-2-3. The slide 8-2-1 is arranged on the track beam, and the connecting rod 8-2-2 is connected to the locking device 8-1. Fig.14That is, the connecting rod 8-2-2 is connected to the thrust rod 8-1-1, and the thrust rod 8-1-1 can drive the connecting rod 8-2-2 to move in the slideway 8-2-1 when it moves. The two ends of the lifting rod 8-2-3 are respectively hinged with the connecting rod 8-2-2 and the thrust rod 8-3-1. A guide groove 8-2-4 is also provided on one side of the track beam. The guide groove 8-2-4 is vertically arranged. The hinge pin at the hinge of the lifting rod 8-2-3 and the compensation plate 8-3 is slidably arranged in the guide groove 8-2-4. In order to prevent the compensation plate 8-3 from rotating around the hinge with the lifting rod 8-2-3, a rectangular slider is arranged at the end of the hinge pin at the hinge of the lifting rod 8-2-3 and the compensation plate 8-3, or the hinge pin is a pin with a plane, and the hinge pin and the guide groove 8-2-4 cooperates to achieve anti-rotation, that is, the compensation plate 8-3 is fixedly connected to the hinge pin, the lifting rod 8-2-3 is movably connected to the hinge pin, and a rectangular slider or a pin with a plane is set at one end of the hinge pin placed in the guide groove 8-2-4, which can prevent the compensation plate 8-3 from rotating and ensure the hinge relationship between the lifting rod 8-2-3 and the compensation plate. In addition to the anti-rotation structure, an anti-rotation structure is also provided below, that is, a position of a lifting ear 8-3-1 hinged to the lifting rod 8-2-3 is set on the compensation plate 8-3. When the lifting ear 8-3-1 is on the center line of the compensation plate 8-3, since the compensation plate 8-3 is balanced on both sides with the lifting ear 8-3-1 as the center, anti-rotation can be achieved to avoid the tail or head tilt affecting the operation of the switch beam. When the thrust rod 8-1-1 moves, it can drive the connecting rod 8-2-2 to move along the slide 8-2-1. The movement of the connecting rod 8-2-2 drives the lifting rod 8-2-3 to drive the compensation plate 8-3 to move. The compensation plate 8-3 moves and is guided by the guide groove 8-2-4 to achieve lifting.

[0072] like Fig.15 As shown, since the power wheel passing through the compensation plate 8-3 will produce a certain impact on the compensation plate 8-3 and exert a certain pressure, in order to prevent the impact from damaging the linkage device 8-2, a section of support ribs 12 are extended from the bottom of the turnout beam and the track beam. When the compensation plate 8-3 falls into the compensation position, the bottom can be supported by the support ribs, thereby providing sufficient support force for the compensation plate to offset the impact force on the compensation plate 8-3 and the linkage device 8-2 when the power wheel passes. In order to provide better limiting for the compensation plate 8-3, a limiting plate 8-3-2 is also provided at the bottom of the compensation plate 8-3. When the compensation plate 8-3 falls into the compensation position, the limiting plate 8-3-2 can be stuck on both sides of the support ribs 12 to limit the compensation plate 8-3.

[0073] like Fig.14 As shown, since the compensation plate 8-3 needs to compensate for the expansion joints on both sides of the track beam and the switch beam, a pair of linkage devices 8-2 and compensation plates 8-3 are symmetrically arranged on both sides of the track beam, and the specific structure is consistent with the above structure.

[0074] Guide wheel compensation plate

[0075] like Fig.16 As shown, a guide wheel compensation plate 9 is arranged at one end where the switch beam 2, the front stack beam 1 and the rear stack beam 3 are connected. The guide wheel compensation plate 9 is arranged on the side walls of the switch beam 2, the front stack beam 1 and the rear stack beam 3 in a tooth shape. When the switch beam 2 is connected with the front stack beam 1 and the rear stack beam 3, the guide wheel compensation plate 9 is in a tooth shape and cooperates with each other to fill the gap after the connection, thereby compensating for the gap at the connection position. Because if the gap is a straight line, the guide wheel will vibrate greatly when passing through, while the gap guide wheel with oblique matching has moderate support to reduce the vibration.

[0076] The above-mentioned devices and mechanisms are integrated in the line-changing system. Spherical bearings are used in the slewing device, connecting device and running device, which can realize adaptive adjustment of the position relationship, compensate for the matching error of the turnout beam caused by temperature and vibration factors, and provide stable support and operating conditions. The installation position of the drum gear and rack assembly of the slewing drive mechanism can also adapt to the telescopic deformation of the turnout beam and provide stable drive. The combination of the above-mentioned devices and mechanisms improves the stable operation of the suspended track line-changing system as a whole.

Claims

1. A suspended track beam three-track line change system, comprising a front stack beam (1), a switch beam (2), a rear stack beam (3) and a gantry beam (4), wherein the front stack beam (1) is provided with one, the switch beam (2) and the rear stack beam (3) are provided with three, the switch beam (2) is rotated so that the corresponding switch beam (2) connects the corresponding rear stack beam (3) and the front stack beam (1) to realize the line change action, and the gantry beam (4) is provided with at least two respectively close to the two ends of the switch beam (2) for suspending the switch beam (2), characterized in that: A slewing device (5) for the turnout beam (2) to rotate around is provided between the portal beam (4) near one end of the rear stack beam (3) and one of the turnout beams (2); a slewing drive mechanism (6) for driving the turnout beam (2) to rotate around the slewing device (5) is provided between the portal beam (4) near one end of the front stack beam (1) and the turnout beam (2); a running mechanism (7) for providing support for the turnout beam (2) and enabling it to travel is provided between the portal beam (4) and the turnout beam (2); a locking compensation mechanism (8) is provided on the front stack beam (1) and each rear stack beam (3); and a connecting device is provided between two adjacent turnout beams (2); The running mechanism (7) comprises a running track (7-1) installed on a gantry beam (4) and a group of roller assemblies (7-2) connected to the turnout beam (2); the roller assembly (7-2) comprises a support seat (7-2-1), a support shaft (7-2-2) and a roller (7-2-3); each of the rollers (7-2-3) rolls along a horizontal plane on the running track (7-1); a first joint bearing (7-2-4) is provided between the roller (7-2-3) and the support shaft (7-2-2); The slewing drive mechanism (6) comprises a power assembly (6-1), a drum gear (6-2) and a rack assembly (6-3); the drum gear (6-2) is arranged at the power output end of the power assembly (6-1); the power assembly (6-1) is mounted on a turnout beam (2); the axis of the drum gear (6-2) points to the axis of the slewing device (5) and is parallel to the horizontal plane; the rack assembly (6-3) is mounted on the portal beam (4) and comprises a group of straight racks (6-3-1) arranged in an arc shape; The locking compensation mechanism (8) comprises a locking device (8-1), a linkage device (8-2) and a compensation plate (8-3); the locking device (8-1) can realize the locking or unlocking action of the turnout beam; when the locking or unlocking action is performed, the locking compensation mechanism (8) can drive the linkage device (8-2) to drive the compensation plate (8-3) to realize vertical lifting; the linkage device (8-2) comprises a slideway (8-2-1), a connecting rod (8-2-2) and a lifting rod (8-2-3); the connecting rod (8-2-2) is connected to the locking device (8-1) and is slidably arranged in the slideway (8-2-1); the locking device (8-1) The invention can drive the connecting rod (8-2-2) to move along the slideway (8-2-1), and the two ends of the lifting rod (8-2-3) are respectively hinged to the connecting rod (8-2-2) and the compensation plate (8-3); a guide groove (8-2-4) is also provided on the side wall of the track beam in the vertical direction, and a hinged part at the hinge between the lifting rod (8-2-3) and the compensation plate (8-3) is slidably arranged in the guide groove (8-2-4); support ribs (12) extending from the end surfaces of the front stack beam (1), the rear stack beam (3) and the turnout beam (2) are provided at the bottom of the end surfaces, and a baffle (8-3-2) capable of being clamped on the support ribs (12) of the track beam and the turnout beam is provided at the bottom of the compensation plate (8-3).

2. A three-track line-changing system for a suspended track beam according to claim 1, characterized in that: A guide wheel compensation plate (9) is provided at the joints of the front stack beam (1), the turnout beam (2) and the rear stack beam (3); the guide wheel compensation plates (9) are tooth-shaped and butt-jointed to fit each other to fill the gap.

3. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The center of the arc formed by the arrangement and combination of the spur racks (6-3-1) is concentric with the rotation center of the turnout beam (2); and the power assembly (6-1) comprises a motor and a reducer.

4. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The axis of each of the rollers (7-2-3) points toward the axis of the rotating device (5).

5. A three-track line-changing system for a suspended track beam according to claim 4, characterized in that: A running track (7-1) is provided on the portal beam (4) at one end away from the rotating device (5), and three running tracks (7-1) corresponding to the positions of the turnout beams (2) are provided on the portal beam (4) at one end close to the rotating device (5).

6. A three-track line-changing system for a suspended track beam according to claim 4 or 5, characterized in that: The running track (7-1) is arc-shaped, and the center of the arc is concentric with the center of the rotating device (5).

7. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The slewing device (5) comprises an upper fixed seat (5-1) and a lower fixed seat (5-2), and a second joint bearing (5-3) is provided between the upper fixed seat (5-1) and the lower fixed seat (5-2).

8. The three-track line-changing system of a suspended track beam according to claim 7, characterized in that: The upper fixed seat (5-1) is provided with an inner cavity (5-4) for limiting the outer ring of the second joint bearing (5-3), and the lower fixed seat (5-2) is provided with a rotary shaft (5-5) capable of being inserted into the inner ring of the second joint bearing (5-3); a sealing ring (5-6) is provided between the upper fixed seat (5-1) and the rotary shaft (5-5).

9. A three-track line-changing system for a suspended track beam according to claim 8, characterized in that: The upper fixing seat (5-1) comprises an upper fixing column (5-1-1) and an upper fixing flange (5-1-2), and the inner cavity (5-4) is arranged in the upper fixing column (5-1-1); the lower fixing seat (5-2) comprises a lower fixing column (5-1-1) and a lower fixing flange (5-1-2), and the rotary shaft (5-5) is arranged on the lower fixing column (5-1-1).

10. A three-track line-changing system for a suspended track beam according to claim 9, characterized in that: A set of reinforcing ribs (5-7) is provided between the upper fixing column (5-1-1) and the upper fixing flange (5-1-2), and between the lower fixing column (5-1-1) and the lower fixing flange (5-1-2).

11. The three-track line changing system of a suspended track beam according to claim 8, characterized in that: The rotary shaft (5-5) and the lower fixed column (5-1-1) are integrally formed.

12. The three-track line changing system of a suspended track beam according to claim 8, characterized in that: The rotary shaft (5-5) is connected to the lower fixed column (5-1-1) via a flange.

13. The three-track line changing system of a suspended track beam according to claim 9, characterized in that: A retaining ring (5-8) is provided at the end of the upper fixed column (5-1-1) to prevent the second joint bearing (5-3) from falling off from the inner cavity (5-4), and the sealing ring (5-6) is arranged between the retaining ring (5-8) and the rotary shaft (5-5).

14. The three-track line changing system of a suspended track beam according to claim 9, characterized in that: A limiting boss (5-9) is provided in the inner cavity (5-4), and a retaining ring (5-8) is installed at the end of the upper fixed column (5-1-1) for tightening the second joint bearing (5-3) against the limiting boss (5-9).

15. A three-track line-changing system for a suspended track beam according to claim 14, characterized in that: A bearing pressing sleeve (5-10) is provided between the retaining ring (5-8) and the outer ring of the second joint bearing (5-3).

16. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The connecting device is used to connect two adjacent turnout beams together. At least one pair of connecting devices is arranged between the two adjacent turnout beams (2). The pair of connecting devices are respectively close to the two ends of the turnout beam (2) to connect the pair of adjacent turnout beams (2). The pair of connecting devices includes at least one movable connecting member (10). The movable connecting member (10) includes a pair of bases (10-1) respectively fixed to the two adjacent turnout beams (2). A third joint bearing (10-2) is arranged on each of the bases (10-1). A connecting rod (10-3) is arranged between the pair of third joint bearings (10-2).

17. A three-track line change system for a suspended track beam according to claim 16, characterized in that: The length of the connecting rod (10-3) is adjustable, and an inclined surface is provided on one side where at least one of the bases (10-1) is connected to the turnout beam (2).

18. A three-track line-changing system for a suspended track beam according to claim 17, characterized in that: The connecting rod (10-3) comprises a threaded sleeve (10-3-1), and threaded rods (10-3-2) are respectively threadedly connected at both ends of the threaded sleeve (10-3-1), and each of the threaded rods (10-3-2) is respectively connected to the third joint bearing (10-2) on the side where it is located, and a locking nut (10-3-3) is also arranged on each of the threaded rods (10-3-2).

19. The three-track line changing system of a suspended track beam according to claim 16, characterized in that: The pair of connection devices also includes a fixed connection member (11), the fixed connection member (11) including an intermediate pile (11-1), and a first connection plate (11-2) and a second connection plate (11-3) respectively connected to two adjacent turnout beams (2) are connected at both ends of the intermediate pile (11-1).

20. The three-track line changing system of a suspended track beam according to claim 19, characterized in that: The first connecting plate (11-2) and the second connecting plate (11-3) are connected to the middle pile (11-1) via flanges, and at least one of the first connecting plate (11-2) and the second connecting plate (11-3) is provided with an inclined surface; and a pad (11-4) is provided between the middle pile (11-1) and the first connecting plate (11-2) and / or the second connecting plate (11-3).

21. A three-track line change system for a suspended track beam according to claim 20, characterized in that: The movable connecting member (10) is arranged at the end of the turnout beam (2) with a larger travel distance, and the fixed connecting member (11) is arranged at the end of the turnout beam (2) with a smaller travel distance.

22. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: A pair of the linkage device (8-2) and the compensation plate (8-3) are symmetrically arranged on both sides of the track beam.

23. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The locking device (8-1) comprises a thrust rod (8-1-1), a guide seat (8-1-2), a locking seat (8-1-3) and a locking pin (8-1-4); the locking pin (8-1-4) is connected to the thrust rod (8-1-1) and is slidably arranged in the guide seat (8-1-2); the thrust rod (8-1-1) can push the locking pin (8-1-4) to be inserted into the locking seat (8-1-3) to achieve locking of the turnout beam (2).

24. A three-track line change system for a suspended track beam according to claim 23, characterized in that: The thrust rod (8-1-1) is an electric push rod or a hydraulic push rod.

25. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: A lifting lug (8-3-1) hinged to the lifting rod (8-2-3) is provided on the compensation plate (8-3), and the lifting lug (8-3-1) is located on the center line of the compensation plate (8-3).

26. The three-track line changing system of a suspended track beam according to claim 1, characterized in that: The compensation plate (8-3) is fixedly connected to the hinge pin at the hinged joint of the lifting rod (8-2-3); one end of the hinge pin located in the guide groove (8-2-4) is a rectangular slider or a pin with a plane.

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