A guide rail flexible driving device and a turnout

Abstract

Provided are a guide rail flexible driving device and a turnout, which comprise a guide rail; the guide rail is provided with at least two driving points along the linear length direction thereof; each driving point has a rotary cam mechanism; the rotary cam mechanisms are connected through connecting rods and the connecting rod connecting crank shaft output ends; the crank shaft input ends are connected with electric push rods; one electric push rod drives all rotary cam mechanisms to perform actions; the rotary cam mechanisms have linear structures at both ends of the cam groove bodies, the linear structures are used for locking after the guide rail is driven to the position, and the stroke of each rotary cam mechanism for driving the guide rail displacement is consistent with the lift of the cam groove at the point. The application has high reliability; the guide rail flexible deformation linear precision is high, the rigidity is large, the vehicle passing is stable and comfortable; the turnout beam structure is simple and is designed; the cost is low and the failure rate is low; the application is not only suitable for a suspended movable core turnout, but also can be applied and popularized on other turnouts.

Description

Technical Field

[0001] This invention belongs to the field of railway switch technology, specifically relating to a guide rail flexible drive device and a turnout. Background Technology

[0002] Suspended monorail turnouts, as a key technology in suspended monorail transit, are used to achieve vehicle switching, turnaround, and obstacle avoidance. Suspended movable core turnouts have advantages such as small footprint and short switching time. Currently, there are two technical approaches for the guide rails of suspended movable core turnouts: rigid guide rails and flexible guide rails.

[0003] In the prior art, patent CN108411717B provides a movable-point turnout structure for a suspended monorail train system. In this patent, the guide rail is a rigid structure, and the guide rail and the movable rail are connected to each other. The movable rail turns the turnout, which drives the guide rail to turn. After the guide rail turns into position, the guide rail and the web surface of the turnout beam are tangent to the vehicle's guide surface, providing guidance for the wheels. Because the guide rail has a certain thickness, there is a height difference in the guide surface, which affects the comfort of vehicle passage.

[0004] Patent publication number CN211645794U discloses a core structure for a suspended monorail turnout. In this patent, the guide rail is a flexible structure, separated from the movable rail. The guide rail is thin-walled, and an electric push rod drives a drive arm. Two gantry drive frames are hinged together via the drive arm, and the gantry drive frames are hinged to the guide rail. The electric push rod drives the drive arm to swing, achieving both straight and curved deformation of the guide rail, thus converting between two crossing states of the turnout. This structure allows for a smooth transition of the turnout guide surface, improving vehicle comfort. However, this structure has the following shortcomings: 1) The guide rail is driven by two sets of gantry drive frames, but due to the limited number of drive points, the guide rail's curved state has poor line accuracy and poor line-keeping stiffness. 2) After the guide rail undergoes flexible deformation, the electric push rod maintains the deformed state. The push rod is under constant stress, and the load transferred from the vehicle to the guide rail when passing through the turnout is also transferred to the electric push rod, reducing its service life and the turnout's reliability. 3) The portal frame occupies a large amount of internal space of the turnout beam, and the turnout beam has to make structural avoidance, resulting in a complex turnout beam structure and poor rigidity.

[0005] In response to the problems existing in the aforementioned guide rail device, the following improvement technical solution is proposed. Summary of the Invention

[0006] The technical problem solved by this invention is to provide a flexible guide rail drive device and a turnout, which solves the technical problems of low reliability and low accuracy of existing guide rail drive devices.

[0007] The technical solution adopted in this invention is as follows: a flexible drive device for a guide rail, comprising a guide rail; the guide rail has at least two drive points along its linear length; each drive point has a rotary cam mechanism; the rotary cam mechanisms are connected by a connecting rod and connected to the output end of a crankshaft; the input end of the crankshaft is connected to an electric push rod; one electric push rod drives all rotary cam mechanisms to perform actions; both ends of the cam groove of the rotary cam mechanism have straight structures, which are used for locking after the guide rail is driven into position; the stroke of each rotary cam mechanism driving the guide rail displacement is consistent with the lift of the cam groove at that point.

[0008] In the above technical solution, the preferred method is to use machining to ensure dimensional accuracy of the cam groove lift, thereby ensuring the accuracy of the flexible deformation line of the guide rail.

[0009] In the above technical solution, the top of the electric push rod is hinged to the push rod seat; the bottom of the push rod seat is fixedly installed at the middle position of the top of the turnout beam.

[0010] In the above technical solution, the crankshaft is further supported at both ends by bearing seats and mounted on the top of the turnout beam.

[0011] In the above technical solution, further: a driving arm is provided in the middle of the crankshaft; driven arms are provided at both ends of the crankshaft; the driving arm is connected to the output end of the electric push rod; and the driven arm is connected to the flange crank of the rotary cam mechanism through a connecting rod.

[0012] In the above technical solution, further: the rotary cam mechanism includes an outer cam seat, a flange crank, a sliding shaft, a camshaft, rollers, a slewing bearing, an anti-rotation seat, and a camshaft connecting rod; the inner ring of the slewing bearing is integrally fixed to the turnout beam with the anti-rotation seat; the outer cam seat and the flange crank are integrally fixed to the outer ring of the slewing bearing; one end of the sliding shaft has a square structure and cooperates with the anti-rotation seat to realize the sliding and anti-rotation functions of the sliding shaft, and the other end of the sliding shaft has a circular structure and cooperates with the inner hole of the outer cam seat to realize the sliding function of the sliding shaft; the sliding shaft is provided with an outwardly extending camshaft; the extended end of the camshaft cooperates with the curved cam groove of the outer cam seat, and the camshaft moves along the curved cam groove; the outer cam seat rotates under the drive of the flange crank, so that the camshaft is displaced along the cam groove of the outer cam seat to realize the linear sliding of the sliding shaft, and the linearly sliding sliding shaft then drives the guide rail to move through the camshaft connecting rod.

[0013] In the above technical solution, the preferred embodiment is that the inner ring of the rotary bearing of the rotary cam mechanism is integrally fixed to the outer web of the turnout beam along with the anti-rotation seat.

[0014] The above technical solution further includes a roller; the roller is installed at the end of the camshaft, and the camshaft is displaced along the cam groove by rolling friction with the cam groove through the end roller.

[0015] In the above technical solution, the end of the guide rail away from the movable rail is a fixed end, and the turnout beam is hinged to the fixed seat; the guide rail is provided with three driving points evenly distributed along its linear length, and each driving point is provided with a rotary cam mechanism.

[0016] In the above technical solution, preferably: the fixed seat includes an upper fixed seat and a lower fixed seat; the guide rail includes an upper left guide rail, a lower left guide rail, an upper right guide rail, and a lower right guide rail; the upper left guide rail and the upper right guide rail are used to guide the bogie stabilizer wheel; the lower left guide rail and the lower right guide rail are used to guide the bogie guide wheel.

[0017] In the above technical solution, preferably: the four guide rails are driven by four sets of rotary cam mechanisms respectively; the flexible drive mechanism of the guide rails on the left and right sides has the same structure; each set of rotary cam mechanisms has three rotary cam mechanisms; the three rotary cam mechanisms are composed of a first rotary cam mechanism, a second rotary cam mechanism, and a third rotary cam mechanism respectively along the linear length direction of the guide rail; the four sets of rotary cam mechanisms are connected by a linkage and driven by an electric push rod.

[0018] In the above technical solution, preferably: the connecting rod includes a vertical connecting rod one, a vertical connecting rod two, a horizontal connecting rod one, and a horizontal connecting rod two; the driven arm is connected to the first rotary cam mechanism through the vertical connecting rod one; the upper first rotary cam mechanism is hinged to the lower first rotary cam mechanism through the vertical connecting rod two; the first rotary cam mechanism is hinged to the second rotary cam mechanism through the horizontal connecting rod one; the second rotary cam mechanism is hinged to the third rotary cam mechanism through the horizontal connecting rod two; the camshaft connecting rods of the first rotary cam mechanism, the second rotary cam mechanism, and the third rotary cam mechanism are hinged to the guide rail and drive the guide rail to move.

[0019] The above technical solution further includes multiple movable supports, which are evenly distributed and installed along the linear length of the guide rail; the rotary cam mechanism achieves the follow-up displacement of the guide rail by hinged to the movable supports through a moving camshaft connecting rod.

[0020] The present invention also claims protection for a turnout, including a turnout beam having a guide rail; the guide rail is equipped with a guide rail flexible drive device, which is any of the guide rail flexible drive devices described above.

[0021] Advantages of this invention compared to existing technologies: This invention employs a rotary cam mechanism to achieve flexible drive of the guide rail. The two ends of the cam groove of the rotary cam mechanism are straight structures, which are used to lock the guide rail after it has been driven into the straight and curved positions, preventing the load from being transmitted in reverse to the electric push rod; thus preventing the electric push rod from being stressed and causing a decrease in the reliability of the turnout.

[0022] In this invention, the stroke displacement of each driving point of the guide rail is determined by the cam groove lift of the rotary cam mechanism. The cam groove lift is machined to ensure dimensional accuracy and guarantee the flexibility and deformation line accuracy of the guide rail.

[0023] The cam groove of the rotary cam mechanism of the present invention has straight ends. In this way, after the cam shaft 13-4 of the rotary cam mechanism rotates to the straight position of the cam groove 13-1-1, the position of the cam shaft 13-4 remains locked, reducing the influence of the start and stop position accuracy of the electric push rod 1 on the flexural deformation accuracy of the guide rail.

[0024] In this invention, each guide rail completes linear driving displacement by one hinged fixed point and three driving points. With multiple driving and positioning points, the guide rail has high linear accuracy and high linear stiffness, ensuring vehicle stability and comfort during passage.

[0025] All drive mechanisms in this invention are arranged outside the turnout beam, which has little impact on the turnout beam structure.

[0026] This invention uses an electric actuator, which reduces the number of power sources and helps to reduce costs and failure rates. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating an embodiment of the application of the present invention on a turnout; Figure 2 for Figure 1 A schematic diagram of the movable core structure; Figure 3 for Figure 2 A magnified structural diagram of part A; Figure 4 This is a schematic diagram of the upper guide rail installation structure; Figure 5 This is a schematic diagram of the lower guide rail installation structure; Figure 6 A three-dimensional view of a rotary cam mechanism; Figure 7 for Figure 6 Main view; Figure 8 This is a partial longitudinal section diagram of the rotary cam mechanism; Figure 9 for Figure 8 The main view; Figure 10 A magnified detail of the cam groove of a rotary cam mechanism; Figure 11 This is a top view of the guide rail in the straight position of the suspended movable core turnout of the present invention. Figure 12 This is a top view of the guide rail curve position of the suspended movable core turnout of the present invention; In the diagram: 1-Electric actuator, 2-Actuator seat, 3-Crankshaft, 4-Bearing seat, 5-Upper fixed seat, 6-Vertical connecting rod one, 7-Lower fixed seat, 8-Vertical connecting rod two, 9-First rotary cam mechanism, 10-Horizontal connecting rod one, 11-Second rotary cam mechanism, 12-Horizontal connecting rod two, 13-Third rotary cam mechanism, 14-Upper right guide rail, 15-Lower right guide rail, 16-Upper left guide rail, 17-Lower left guide rail, 18-Movable rail, 13-1Outer cam seat, 13-2Flange crank. 13-3 Sliding shaft, 13-4 Camshaft, 13-5 Roller, 13-6 Slewing bearing, 13-7 Anti-rotation seat, 13-8 Camshaft connecting rod, 13-1-1 Cam groove, 18-1 Curved guide surface, 18-2 Straight guide surface, 19-Slewing shaft, 20-Turnout beam, 20-1 Curved web surface, 20-2 Straight web surface, 21-Modible support. Detailed Implementation

[0028] The following will refer to the appendices in the embodiments of the present invention. Figure 1-12 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] (like Figure 2 , Figure 3 (As shown) A flexible drive device for a guide rail includes a guide rail; the guide rail has at least two drive points along its linear length. Using at least two or more drive points to complete the linear driving displacement of the guide rail, with more than one drive positioning point, enables high linear accuracy and high linear stiffness of the guide rail, ensuring vehicle stability and comfort. It should be understood that the number of drive points protected by this invention can be two, three, or more than three. It should be noted that when this invention is applied to a suspended movable core turnout, a three-drive-point embodiment is preferred.

[0030] Each drive point has a rotary cam mechanism; the rotary cam mechanisms are connected to each other via connecting rods and connected to the output end of crankshaft 3 via connecting rods; the input end of crankshaft 3 is connected to electric push rod 1; one electric push rod 1 drives all rotary cam mechanisms to perform actions. All guide rails are driven by one electric push rod 1, reducing the power source, lowering costs and failure rates.

[0031] (like Figure 6 , Figure 10As shown, the rotary cam mechanism has straight structures at both ends of the cam groove 13-1-1. The straight structures are used for locking after the guide rail is driven into position; at the same time, they prevent the load on the guide rail from being transmitted in reverse to the electric push rod 1, thus avoiding the problem of the electric push rod's lifespan being worn out too quickly.

[0032] The stroke of each rotary cam mechanism driving the guide rail displacement is consistent with the lift of the cam groove 13-1-1 at that point, ensuring the accuracy of the guide rail's flexible deformation line.

[0033] In the above embodiments, preferably, the lift of the cam groove 13-1-1 is machined to ensure dimensional accuracy, thereby ensuring the accuracy of the flexible deformation line of the guide rail.

[0034] (like Figure 3 , Figure 1 As shown in the above embodiment, the electric push rod 1 is hinged to the top of the push rod seat 2; the bottom end of the push rod seat 2 is fixedly installed at the middle position of the top of the turnout beam 20. The drive mechanism is arranged outside the turnout beam, which has little impact on the structure of the turnout beam.

[0035] In the above embodiment, the crankshaft 3 is further supported at both ends by bearing seats 4 and mounted on the top of the turnout beam 20 to reduce power loss caused by friction.

[0036] (like Figure 3 As shown in the above embodiment, further: the crankshaft 3 is provided with a driving arm 3-1 in the middle; the crankshaft 3 is provided with driven arms 3-2 at both ends; both the driving arm and the driven arm are crank structures; the driving arm 3-1 is connected to the output end of the electric push rod 1; the driven arm 3-2 is connected to the flange crank 13-2 of the rotary cam mechanism through a connecting rod.

[0037] (like Figures 6 to 10 As shown in the above embodiment, the rotary cam mechanism further includes an outer cam seat 13-1, a flange crank 13-2, a sliding shaft 13-3, a camshaft 13-4, a roller 13-5, a rotary bearing 13-6, an anti-rotation seat 13-7, and a camshaft connecting rod 13-8.

[0038] The connection structure of the rotary cam mechanism is as follows: the inner ring of the rotary bearing 13-6 is integrally fixed to the anti-rotation seat 13-7 and the turnout beam 20 using fasteners such as bolts.

[0039] In the above embodiments, preferably, the inner ring of the rotary bearing 13-6 of the rotary cam mechanism and the anti-rotation seat 13-7 are integrally fixed to the outer web of the turnout beam 20. That is, the driving point is set outside the turnout beam 20, which has little impact on the structure of the turnout beam 20.

[0040] The outer cam seat 13-1 and the flange crank 13-2 are fixedly connected to the outer ring of the slewing bearing 13-6 to achieve rotation.

[0041] One end of the sliding shaft 13-3 has a square structure and cooperates with the anti-rotation seat 13-7 to realize the sliding and anti-rotation functions of the sliding shaft 13-3. The other end of the sliding shaft 13-3 has a circular structure and cooperates with the inner hole of the outer cam seat 13-1 to realize the sliding function of the sliding shaft 13-3.

[0042] The sliding shaft 13-3 is provided with an outwardly extending camshaft 13-4; the extended end of the camshaft 13-4 cooperates with the curved cam groove 13-1-1 made in the outer cam seat 13-1, and the camshaft 13-4 moves along the curved cam groove 13-1-1.

[0043] The working principle of the rotary cam mechanism is as follows: the outer cam seat 13-1 rotates under the drive of the flange crank 13-2, so that the cam shaft 13-4 is displaced along the cam groove 13-1-1 made in the outer cam seat 13-1, thereby realizing the linear sliding of the sliding shaft 13-3, and the linearly sliding sliding shaft 13-3 then drives the guide rail to move through the cam shaft connecting rod 13-8.

[0044] In the above embodiment, it further includes a roller 13-5; the roller 13-5 is installed at the end of the camshaft 13-4, and the camshaft 13-4 is displaced along the cam groove 13-1-1 by rolling friction engagement with the cam groove 13-1-1 through the end roller 13-5. This reduces frictional resistance and improves the displacement flexibility of the camshaft 13-4 along the cam groove 13-1-1.

[0045] (like Figure 3 As shown in the above embodiment, further: the end of the guide rail away from the movable rail 18 is a fixed end, and is hinged to the turnout beam 20 through a fixed seat; the guide rail is evenly distributed with three driving points along its linear length, and each driving point is respectively equipped with the rotary cam mechanism. With three driving points and multiple passive driving positioning points, the guide rail has high linear accuracy and high linear stiffness, ensuring vehicle stability and comfort during passage.

[0046] In the above embodiments, preferably: the fixing base includes an upper fixing base 5 and a lower fixing base 7; the guide rail includes an upper left guide rail 16, a lower left guide rail 17, an upper right guide rail 14, and a lower right guide rail 15.

[0047] The upper left guide rail 16 and the upper right guide rail 14 are used to guide the bogie stabilizer wheel; the lower left guide rail 17 and the lower right guide rail 15 are used to guide the bogie guide wheel.

[0048] In the above embodiments, preferably, the four guide rails are driven by four sets of rotary cam mechanisms respectively; the flexible drive mechanisms of the guide rails on the left and right sides have the same structure.

[0049] Each set of rotary cam mechanisms has three rotary cam mechanisms; the three rotary cam mechanisms are respectively composed of the first rotary cam mechanism 9, the second rotary cam mechanism 11, and the third rotary cam mechanism 13 along the linear length of the guide rail; the four sets of rotary cam mechanisms are connected by a linkage and driven by an electric push rod 1.

[0050] (Specifically) In the above embodiments, preferably: the connecting rod includes a first vertical connecting rod 6, a second vertical connecting rod 8, a first horizontal connecting rod 10, and a second horizontal connecting rod 12; the driven arm 3-2 is connected to the first rotary cam mechanism 9 through the first vertical connecting rod 6; the upper first rotary cam mechanism 9 is hinged to the lower first rotary cam mechanism 9 through the second vertical connecting rod 8; the first rotary cam mechanism 9 is hinged to the second rotary cam mechanism 11 through the first horizontal connecting rod 10; the second rotary cam mechanism 11 is hinged to the third rotary cam mechanism 13 through the second horizontal connecting rod 12; the camshaft connecting rods 13-8 of the first rotary cam mechanism 9, the second rotary cam mechanism 11, and the third rotary cam mechanism 13 are hinged to the guide rail and drive the guide rail to move.

[0051] (like Figure 3 (As shown) Specifically, the first rotary cam mechanism 9 has two flange cranks 13-2 at a certain angle, and each flange crank 13-2 has a hinge point at its end; one hinge point is used to hinge the vertical connecting rod, and the other hinge point is used to hinge the horizontal connecting rod. The second rotary cam mechanism 11 has one flange crank 13-2, but this flange crank 13-2 has two hinge points, an upper and a lower one; the lower hinge point is used to hinge the first horizontal connecting rod 10, and the upper hinge point is used to hinge the second horizontal connecting rod 12. The third rotary cam mechanism 13 only needs to have one flange crank 13-2, and this flange crank 13-2 only needs to have one hinge point.

[0052] (like Figure 4 , Figure 5 As shown in the above embodiment, it further includes multiple movable supports 21, each of which has a double-ear plate structure. The movable supports 21 are evenly distributed and installed along the linear length of the guide rail; and the movable supports 21 are installed at three points respectively. The rotary cam mechanism achieves the follow-up displacement of the guide rail by hinged to the movable supports 21 through the movable camshaft connecting rod 13-8.

[0053] (like Figure 1(As shown) The present invention also claims protection for a turnout, including a turnout beam 20 having a guide rail; the guide rail is equipped with a guide rail flexible drive device, the guide rail flexible drive device being any of the aforementioned guide rail flexible drive devices.

[0054] The working principle of this invention is as follows: The electric push rod 1 and the crankshaft 3 are installed on the top of the turnout beam. The electric push rod 1 extends and retracts to drive the crankshaft 3 to rotate. The driven arms 3-2 on both sides of the crankshaft 3 are connected in series with all the rotary cam mechanisms through multiple connecting rods. The rotation of the crankshaft 3 drives all the rotary cam mechanisms to rotate synchronously. Each guide rail is hinged to the turnout beam 20 at the end furthest from the movable rail 18 via a fixed seat. The three sets of movable supports 21 on each guide rail are respectively connected to the camshaft connecting rods 13-8 of the first rotary cam mechanism 9, the second rotary cam mechanism 11, and the third rotary cam mechanism 13. The driving displacement stroke of the three points in the straight and curved states of the four guide rails is consistent with the lift of the cam grooves 13-1-1 of the first rotary cam mechanism 9, the second rotary cam mechanism 11, and the third rotary cam mechanism 13, thereby ensuring the precise driving positioning of the guide rails. The two ends of the cam groove 13-1-1 of the outer cam seat 13-1 are in a straight state. When the roller 13-5 enters the straight section at both ends of the cam groove 13-1-1, the outer cam seat 13-1 stops rotating, that is, the sliding shaft 13-3 no longer moves and is mechanically locked, realizing the locking after the guide rail is in place by flexible drive. This can prevent the load on the guide rail from being transmitted in reverse to the electric push rod 1, ensuring the safety of vehicle passage and the reliability of the electric push rod 1.

[0055] The guide rails include an upper left guide rail 16, a lower left guide rail 17, an upper right guide rail 14, and a lower right guide rail 15. The upper left and upper right guide rails 16 and 14 guide the bogie stabilizer wheels, while the lower left and lower right guide rails 17 and 15 guide the bogie guide wheels. The four guide rails are driven by four sets of first rotary cam mechanisms 9, second rotary cam mechanisms 11, and third rotary cam mechanisms 13, respectively. All rotary cam mechanisms are connected by linkages and driven by a single electric push rod 1, reducing the power source and lowering costs and failure rates.

[0056] (like Figure 6 (As shown) When the electric push rod 1 extends, it drives all the left rotary cam mechanisms to extend through the connecting rod. The upper left guide rail 16 and the lower left guide rail 17 are in a straight state and are flush with the straight side guide surface 18-1 of the movable rail 18. When all the right rotary cam mechanisms retract, the upper right guide rail 14 and the lower right guide rail 15 are in a straight state and are flush with the straight web surface 20-2 of the turnout beam 20, thus realizing the conversion of the straight turnout line.

[0057] Similarly: (e.g.) Figure 7(As shown) When the electric push rod 1 retracts, it drives all the left-side rotary cam mechanisms to retract via the connecting rod. The upper left guide rail 16 and the lower left guide rail 17 are in a curved state and are flush with the curved web surface 20-1 of the turnout beam 20. All the right-side rotary cam mechanisms extend, and the upper right guide rail 14 and the lower right guide rail 15 are in a curved state and are flush with the curved side guide surface 18-2 of the movable rail 18 after the position is changed, thus realizing the conversion of the curved turnout line.

[0058] As can be seen from the above description, the present invention uses a rotary cam mechanism to achieve flexible drive of the guide rail. The two ends of the cam groove 13-1-1 of the rotary cam mechanism are straight structures, which are used to lock the guide rail after it is driven into the straight and curved positions, preventing the load from being transmitted to the electric push rod 1 in the reverse direction; and preventing the technical problem of reduced turnout reliability caused by the electric push rod 1 being subjected to force.

[0059] The stroke displacement of each driving point of the guide rail in this invention is determined by the lift of the cam groove 13-1-1 of the rotary cam mechanism. The lift of the cam groove 13-1-1 is machined to ensure dimensional accuracy, thereby ensuring the flexibility and deformation line accuracy of the guide rail.

[0060] The cam groove of the rotary cam mechanism of the present invention has straight ends. In this way, after the cam shaft 13-4 of the rotary cam mechanism rotates to the straight position of the cam groove 13-1-1, the position of the cam shaft 13-4 remains locked, reducing the influence of the start and stop position accuracy of the electric push rod 1 on the flexural deformation accuracy of the guide rail.

[0061] In this invention, each guide rail completes linear driving displacement by one hinged fixed point and three driving points. With multiple driving and positioning points, the guide rail has high linear accuracy and high linear stiffness, ensuring vehicle stability and comfort during passage.

[0062] All drive mechanisms in this invention are arranged outside the turnout beam, which has little impact on the turnout beam structure.

[0063] This invention uses an electric actuator 1 for driving, which reduces the number of power sources and helps to reduce costs and failure rates.

[0064] In summary, this invention not only solves the technical problems of low reliability and low precision in existing guide rail drive devices, significantly improving reliability and precision; but also features high precision in the flexible deformation profile of the guide rail, high linear stiffness, and stable and comfortable vehicle passage; it also facilitates simplified design of turnout beam structure; it has low cost and low failure rate; and it is not only suitable for suspended movable core turnouts, but can also be applied and promoted to other turnouts.

[0065] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A flexible drive device for a guide rail, comprising a guide rail; characterized in that: The guide rail has at least two driving points along its linear length; each driving point has a rotary cam mechanism; the rotary cam mechanisms are connected by a connecting rod and connected to the output end of the crankshaft (3); the input end of the crankshaft (3) is connected to an electric push rod (1); one electric push rod (1) drives all rotary cam mechanisms to perform actions; the cam groove (13-1-1) of the rotary cam mechanism has straight structures at both ends, and the straight structures are used for locking after the guide rail is driven into position; the stroke of each rotary cam mechanism driving the guide rail displacement is consistent with the lift of the cam groove (13-1-1) at that point; The rotary cam mechanism includes an outer cam seat (13-1), a flange crank (13-2), a sliding shaft (13-3), a camshaft (13-4), a roller (13-5), a slewing bearing (13-6), an anti-rotation seat (13-7), and a camshaft connecting rod (13-8). The inner ring of the slewing bearing (13-6) is integrally fixed to the turnout beam (20) with the anti-rotation seat (13-7). The outer cam seat (13-1) and the flange crank (13-2) are integrally fixed to the outer ring of the slewing bearing (13-6). One end of the sliding shaft (13-3) has a square structure and cooperates with the anti-rotation seat (13-7) to realize the sliding and anti-rotation functions of the sliding shaft (13-3). The other end of the sliding shaft (13-3) has a circular structure and is integrally fixed with the outer cam seat (13-4). 1) The sliding function of the sliding shaft (13-3) is realized by the inner hole fit; the sliding shaft (13-3) is provided with an outwardly extending camshaft (13-4); the extended end of the camshaft (13-4) fits with the curved cam groove (13-1-1) of the outer cam seat (13-1), and the camshaft (13-4) moves along the curved cam groove (13-1-1); the outer cam seat (13-1) rotates under the drive of the flange crank (13-2), so that the camshaft (13-4) is displaced along the cam groove (13-1-1) of the outer cam seat (13-1), thereby realizing the linear sliding of the sliding shaft (13-3), and the linearly sliding sliding shaft (13-3) drives the guide rail to move through the camshaft connecting rod (13-8); It also includes a roller (13-5); the roller (13-5) is installed at the end of the camshaft (13-4), and the camshaft (13-4) is displaced along the cam groove (13-1-1) by rolling friction engagement with the cam groove (13-1-1) through the end roller (13-5).

2. The guide rail flexible drive device according to claim 1, characterized in that: The lift of the cam groove (13-1-1) is machined to ensure dimensional accuracy, thereby ensuring the accuracy of the flexible deformation line of the guide rail.

3. The guide rail flexible drive device according to claim 1, characterized in that: The electric push rod (1) is hinged to the top of the push rod seat (2); the bottom of the push rod seat (2) is fixedly installed at the middle position of the top of the turnout beam (20).

4. The guide rail flexible drive device according to claim 1, characterized in that: The crankshaft (3) is rotatably supported at both ends by bearing seats (4) and mounted on the top of the turnout beam (20).

5. The guide rail flexible drive device according to claim 1 or 4, characterized in that: The crankshaft (3) has an active arm (3-1) in the middle; the crankshaft (3) has driven arms (3-2) at both ends; the active arm (3-1) is connected to the output end of the electric push rod (1); the driven arm (3-2) is connected to the flange crank (13-2) of the rotary cam mechanism through a connecting rod.

6. The guide rail flexible drive device according to claim 1, characterized in that: The inner ring of the rotary bearing (13-6) of the rotary cam mechanism is integrally fixed to the outer web of the turnout beam (20) along with the anti-rotation seat (13-7).

7. The guide rail flexible drive device according to claim 1, characterized in that: The end of the guide rail away from the movable rail (18) is the fixed end, and the turnout beam (20) is hinged through the fixed seat; the guide rail is evenly distributed with three driving points along its linear length direction, and each driving point is equipped with the rotary cam mechanism.

8. The guide rail flexible drive device according to claim 7, characterized in that: The fixed base includes an upper fixed base (5) and a lower fixed base (7); the guide rail includes an upper left guide rail (16), a lower left guide rail (17), an upper right guide rail (14), and a lower right guide rail (15); the upper left guide rail (16) and the upper right guide rail (14) are used to guide the bogie stabilizer wheel; the lower left guide rail (17) and the lower right guide rail (15) are used to guide the bogie guide wheel.

9. The guide rail flexible drive device according to claim 1 or 8, characterized in that: The four guide rails are driven by four sets of rotary cam mechanisms respectively; the flexible drive mechanisms of the guide rails on the left and right sides have the same structure; each set of rotary cam mechanisms has three rotary cam mechanisms; the three rotary cam mechanisms are composed of the first rotary cam mechanism (9), the second rotary cam mechanism (11), and the third rotary cam mechanism (13) respectively along the linear length of the guide rail; the four sets of rotary cam mechanisms are connected by a linkage and driven by an electric push rod (1).

10. The guide rail flexible drive device according to claim 5, characterized in that: The connecting rods include vertical connecting rod one (6), vertical connecting rod two (8), horizontal connecting rod one (10), and horizontal connecting rod two (12); the driven arm (3-2) is connected to the first rotary cam mechanism (9) through vertical connecting rod one (6); the upper first rotary cam mechanism (9) is hinged to the lower first rotary cam mechanism (9) through vertical connecting rod two (8); the first rotary cam mechanism (9) is hinged to the second rotary cam mechanism (11) through horizontal connecting rod one (10); the second rotary cam mechanism (11) is hinged to the third rotary cam mechanism (13) through horizontal connecting rod two (12); the camshaft connecting rods (13-8) of the first rotary cam mechanism (9), the second rotary cam mechanism (11), and the third rotary cam mechanism (13) are hinged to the guide rail and drive the guide rail to move.

11. The guide rail flexible drive device according to claim 1 or 10, characterized in that: It also includes multiple movable supports (21), which are evenly distributed and installed along the linear length of the guide rail; the rotary cam mechanism achieves the follow-up displacement of the guide rail by hinged to the movable supports (21) through the movable camshaft connecting rod (13-8).

12. A turnout, characterized in that: The system includes a turnout beam (20) having a guide rail; the guide rail is equipped with a guide rail flexible drive device, which is the guide rail flexible drive device according to any one of claims 1-11.

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