Switch machine linkage

Abstract

The application discloses a switch machine linkage device and relates to the technical field of switch machines, which comprises a shell, the inner side of the shell is provided with a detachable protective shell, the motor output shaft is provided with a gear transmission mechanism, the outer side of the shell is coaxially sleeved with an action rod connecting piece, the inner side of the action rod connecting piece is attached and stacked with a load end connecting piece, and the inner side of the load end connecting piece is provided with a pin shaft; the side end of the indicating rod is provided with an L-shaped indicating rod connecting piece, and the boss is embedded in the inside of the long slot. The switch machine linkage device is provided with a long slot structure with a stroke allowance, which allows a preset adjustable stroke difference between the action rod and the indicating rod. Assemblers can flexibly fine-tune the initial installation position of the indicating rod according to the actual installation conditions of the turnout, adapt to the assembly requirements of switch machines of different specifications and turnouts with different stroke parameters, and reduce the precision requirements of the overall structure on machining and assembly.

Description

Technical Field

[0001] This invention relates to the field of switch machine technology, specifically to a switch machine linkage device. Background Technology

[0002] The switch machine is the core equipment of the railway turnout switching system. In the actual railway line, the switch machine realizes the switching and locking of the turnout point rail through the matching external locking device. It relies on the external locking device to complete the turnout track changing linkage operation. Before the switch machine leaves the factory and after maintenance, it needs to be subjected to durability test and operation number simulation test on the test bench. The test bench simulates the repeated reciprocating operation of the switch machine to verify the overall reliability, mechanical life and operation logic of the switch machine, count the number of operation operations of the switch machine, and complete the product factory inspection. The test bench simulation operation needs to simulate the linkage and cooperation relationship between the switch machine's action rod and the indicator rod to reproduce the actual movement logic of the switch machine.

[0003] In the prior art, Chinese Patent No. CN219749820U discloses a switch machine linkage mechanism, including an actuating rod and an actuating rod connecting iron, a stroke adjusting screw connected to the actuating rod, and a stroke adjusting component. The stroke adjusting component is fitted onto the stroke adjusting screw, and is limited at both ends of the stroke adjusting component by nuts one and two respectively. The stroke adjusting component includes two stroke adjusting blocks one and two arranged in sequence. The actuating rod connecting iron is fitted onto the stroke adjusting component through a connecting pipe section at its bottom end. The actuating rod and the actuating connecting iron adopt the form of an adjusting screw plus stroke adjusting blocks, which can move on the adjusting screw through threads to adjust the gap with the connecting iron, effectively solving the problem of inconsistency between the switch machine's movement stroke and the turnout's opening stroke. At the same time, it is more convenient to adjust the close contact position of the switch rail when installing the switch machine. Chinese Patent No. CN211685132U discloses a linkage mechanism between an action rod and an indicator rod in a split-type switch machine. The mechanism includes an action rod and an indicator rod. Mounting plates are detachably connected to the relatively close sides of both the action rod and the indicator rod via first mounting bolts. The mounting plates on the action rod and the indicator rod are located on the same center line. A guide plate with two guide rods is provided between the action rod and the indicator rod, allowing them to be fixed together. This not only enables the action rod and the indicator rod to move simultaneously but also ensures that their movement trajectories are identical. Sliding grooves are formed on the guide rods, and guide grooves with sliders are formed inside the guide plates to fix the movement trajectories of the guide rods, thereby fixing the movement trajectories of the action rod and the indicator rod.

[0004] In actual use, the above-mentioned device, which relies on the threaded adjustment of the stroke, can only solve the problem of stroke matching of a single switch machine. It cannot cope with the problem of synchronizing the actions of different switch machines in multi-machine traction scenarios. The latter rigidly fixes the action rod and the indicator rod as one piece without leaving a buffer space for assembly error. It has high requirements for the machining accuracy of parts and the accuracy of on-site assembly. Once a slight dimensional deviation occurs, it is easy to cause the parts to jam, affecting the normal operation of the switch machine. It has poor versatility. Summary of the Invention

[0005] The purpose of this invention is to provide a switch machine linkage device to solve the problems mentioned in the background art, such as the low fault tolerance rate and high requirements for processing and assembly precision of the existing rigid connection scheme of switch machine linkage device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a switch machine linkage device, comprising a housing, a detachable protective shell provided on the inner side of the housing, a motor fixedly installed inside the housing, a gear transmission mechanism provided on the output shaft of the motor, and an automatic opening / closing device and a shifting contactor arranged sequentially inside the housing near the protruding end of the rod; an actuating rod extends laterally through one side of the housing, an indicator rod is arranged parallel to the side end of the actuating rod, an actuating rod connector is coaxially fitted on the outer side of the housing, a load-end connector is fitted and overlapped on the inner side of the actuating rod connector, a pin is provided on the inner side of the load-end connector, the pin is perpendicular to the axis of the actuating rod and passes through the actuating rod connector and the load-end connector. The carrier end connector achieves synchronous locking; the side end of the actuating rod connector is provided with a boss, and the side end of the indicator rod is provided with an L-shaped indicator rod connector. The top surface of the L-shaped indicator rod connector is provided with a circular positioning hole and an elliptical positioning hole in sequence. The left and right side walls of the L-shaped indicator rod connector are symmetrically provided with hexagonal screw countersunk through holes. The tail of the L-shaped indicator rod connector is bent downward to form a bent section. The bent section has a horizontally penetrating long slot. The boss is embedded in the long slot. The two slide together along the length of the slot. The actuating rod drives the actuating rod connector and the boss to move synchronously. When the boss slides to the end of the long slot, it pulls the L-shaped indicator rod connector, and synchronously drives the indicator rod to complete the turnout linkage.

[0007] Furthermore, the gear transmission mechanism includes a first gear, which meshes with a second gear, a second gear and a third gear, which are fixedly connected, a third gear meshing with a driven gear, and a driven gear coaxially connected to a lead screw.

[0008] Furthermore, the elongated slot is formed on the downward bending section of the L-shaped indicator rod connector, the extension direction of the elongated slot is consistent with the extension and retraction direction of the action rod, and the length of the elongated slot limits the horizontal sliding stroke of the boss.

[0009] Furthermore, the circular positioning holes and elliptical positioning holes are distributed in parallel on the top surface of the L-shaped indicator rod connector, and the circular positioning holes and elliptical positioning holes are respectively fitted onto the outside of the indicator rod's built-in fastening bolts.

[0010] Furthermore, the hexagonal screw countersunk holes are arranged symmetrically in pairs on the left and right side walls of the L-shaped indicator rod connector, and the locking screw passes laterally through the hexagonal screw countersunk holes to abut against the indicator rod.

[0011] Furthermore, a friction connector is provided inside the housing, one end of which is connected to the automatic opener / closer, and the friction connector is located below the automatic opener / closer.

[0012] Furthermore, a connector is mounted on the side wall of the housing, and a shut-off switch is provided at the end of the housing away from the connector.

[0013] Furthermore, the load end connector and the actuating rod connector are tightly fitted together, and their central through holes are coaxially sleeved on the actuating rod body.

[0014] Furthermore, the boss protrudes from the inner side of the actuating rod connector, and the boss can only slide horizontally along the long slot. The slot length is L-shaped, representing the stroke difference between the rod connector and the actuating rod connector.

[0015] Furthermore, the actuating rod connector, load end connector, pin, and L-shaped indicator rod connector are all arranged inside the housing between the actuating rod and the indicator rod, and are set independently of the transmission components inside the housing.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) By setting a long slotted structure with a stroke margin, a preset adjustable stroke difference is allowed between the action rod and the indicator rod. The assembly personnel can flexibly fine-tune the initial installation position of the indicator rod according to the actual installation conditions of the turnout, adapt to the assembly requirements of turnouts of different specifications and different opening parameters, reduce the precision requirements of the overall structure for processing and assembly, facilitate the on-site construction personnel to quickly complete the installation and commissioning work, and shorten the on-site construction and commissioning time. (2) Through the sliding fit mechanical structure of the action rod, the action rod connector and the L-shaped indicator rod connector, the mechanical linkage between the action rod and the indicator rod is directly realized, replacing the traditional scheme of relying on electronic control signals to realize the synchronization of multiple parts. From the mechanical structure level, the problem of asynchronous operation of the switch machine caused by signal transmission delay or abnormal command is avoided, effectively reducing the risk of turnout switching jamming in multi-machine traction scenarios and improving the stability of large number turnout operation; (3) The linkage structure is independently installed between the action rod and the indicator rod inside the housing. There is no need to modify or adapt the original transmission system of the switch machine. It can be directly installed and used whether it is a newly installed switch machine or an existing old switch machine. The modification cost is low and the adaptability is strong. At the same time, the overall structure adopts a modular design, and the core connecting parts are easy to disassemble and assemble. The difficulty of daily maintenance and fault disassembly and replacement is low, which can effectively reduce the maintenance cost of the switch machine throughout its entire life cycle. (4) The sliding engagement traction structure is used instead of the rigid fixed connection structure. While ensuring the synchronization of the linkage, it can absorb the small impact vibration generated during the turnout switching process, reduce the rigid collision wear between linkage components, extend the service life of each linkage component, reduce the frequency of component replacement in the daily maintenance of the switch machine, and further reduce the equipment operation and maintenance cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the automatic opening and closing device of the present invention; Figure 3 This is a three-dimensional structural diagram of the actuator connector of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the driven gear of the present invention; Figure 5 This is a three-dimensional structural diagram of the L-shaped indicator rod connector of the present invention; Figure 6 This is a three-dimensional structural diagram of the load-end connector of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the protective shell of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the lead screw of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the gear of the present invention.

[0018] In the diagram: 1. Housing; 2. Protective shell; 3. Motor; 4. Gear 1; 5. Gear 2; 6. Gear 3; 7. Driven gear; 8. Lead screw; 9. Actuating rod connector; 10. Actuating rod; 11. Load end connector; 12. Pin; 13. Boss; 14. L-shaped indicator rod connector; 15. Circular positioning hole; 16. Oval positioning hole; 17. Hexagonal screw countersunk through hole; 18. Long slot; 19. Friction coupling; 20. Automatic opening and closing device; 21. Shift contactor; 22. Indicating rod; 23. Connector. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 2 The present invention provides the following technical solution: a switch machine linkage device, including a housing 1, a detachable protective shell 2 provided on the inner side of the housing 1, a motor 3 fixedly installed inside the housing 1, a gear transmission mechanism provided on the output shaft of the motor 3, an automatic opening and closing device 20 and a shift contactor 21 arranged sequentially inside the housing 1 near the protruding end of the rod body; an actuating rod 10 is transversely penetrating one side of the housing 1, an indicator rod 22 is arranged parallel to the side end of the actuating rod 10, an actuating rod connector 9 is coaxially fitted on the outer side of the housing 1, a load end connector 11 is fitted and stacked on the inner side of the actuating rod connector 9, a pin 12 is provided on the inner side of the load end connector 11, the pin 12 is perpendicular to the axis of the actuating rod 10 and passes through both the actuating rod connector 9 and the load end connector 11 to achieve... Synchronous locking; the side end of the action rod connector 9 is provided with a boss 13, and the side end of the indicator rod 22 is provided with an L-shaped indicator rod connector 14. The top surface of the L-shaped indicator rod connector 14 is provided with a circular positioning hole 15 and an elliptical positioning hole 16 in sequence. The left and right side walls of the L-shaped indicator rod connector 14 are symmetrically provided with hexagonal screw countersunk through holes 17. The tail of the L-shaped indicator rod connector 14 is bent downward to form a bent section. The bent section has a horizontally penetrating long slot 18. The boss 13 is embedded in the long slot 18. The two slide together along the length of the slot. The action rod 10 drives the action rod connector 9 and the boss 13 to move synchronously. When the boss 13 slides to the end of the long slot 18, it pulls the L-shaped indicator rod connector 14, which synchronously drives the indicator rod 22 to complete the turnout linkage.

[0021] The mechanical linkage between the actuator 10 and the indicator 22 is achieved through the cooperation of mechanical structures. This eliminates the need to rely on electronic signal synchronization control commands, thus ensuring the consistency of their actions and avoiding the problem of asynchronous actions caused by signal delays or abnormal commands from a mechanical perspective.

[0022] Example 2: Based on Example 1, this example solves the problem that existing switch machine linkage devices cannot flexibly adapt to the assembly requirements of switch machines with different stroke parameters, and that high machining and assembly precision is required. Please refer to [link to example]. Figure 2 - Figure 6The document also discloses a long slot 18, the specific structure of which is as follows: the gear transmission mechanism includes a gear 1 4, which meshes with a gear 2 5, a gear 2 5 and a gear 3 6, which are fixedly connected, a gear 3 6 meshes with a driven gear 7, and a driven gear 7 is coaxially connected to a lead screw 8. The long slot 18 is opened on the downward bending section of the L-shaped indicator rod connector 14. The extension direction of the long slot 18 is consistent with the extension and retraction direction of the actuating rod 10. The length of the long slot 18 limits the horizontal sliding stroke of the boss 13. Circular positioning holes 15 and elliptical positioning holes 16 are distributed parallel to each other on the top surface of the L-shaped indicator rod connector 14. Circular positioning holes 15 and elliptical positioning holes 16 are respectively fitted onto the outside of the fastening bolts of the indicator rod 22. Hexagonal screw countersunk through holes 17 are arranged in pairs symmetrically on the left and right side walls of the L-shaped indicator rod connector 14. The locking screw passes laterally through the hexagonal screw countersunk through holes 17 and abuts against the indicator rod 22.

[0023] When the switch machine needs to complete the turnout switching action, the motor 3 starts and outputs power, which is transmitted step by step through the gear transmission mechanism consisting of gear 4, gear 5, gear 6, and driven gear 7, driving the lead screw 8 to rotate, and then driving the actuating rod 10 to extend and retract horizontally. During the translation of the actuating rod 10, the load end connector 11, the actuating rod connector 9, and the boss 13 protruding from the side of the actuating rod connector 9 are driven to move horizontally together through the pin 12. At this time, the boss 13 first slides along the long slot 18 of the bent section of the L-shaped indicator rod connector 14. After the boss 13 contacts and slides to the end side wall of the long slot 18, the boss 13 can pull the L-shaped indicator rod connector 14 along with the actuating rod connector. The connector 9 moves synchronously, which in turn drives the indicator rod 22 to move synchronously through the L-shaped indicator rod connector 14, thus completing the linkage action of the turnout position change. The long slot 18 has a reserved sliding stroke that can adapt to the stroke difference between the action rod 10 and the indicator rod 22, avoiding component jamming or overload damage caused by rigid linkage. This device is set independently of the original transmission components of the housing 1, making installation, maintenance and modification difficult. It can be directly installed on the basis of existing switch machine equipment to adapt to the transformation and upgrading needs of existing lines. The combination of circular positioning holes 15 and elliptical positioning holes 16 can adapt to different installation tolerances, which facilitates quick alignment and adjustment during on-site installation and reduces the workload of installation and commissioning.

[0024] Example 3: Based on Example 1, this example solves the problem of high installation and modification costs for existing switch machine linkage devices, which require replacing the original transmission structure to achieve the linkage function. Please refer to [link / reference needed]. Figure 3 - Figure 9The protrusion 13 is also disclosed, and its specific structure is as follows: a friction connector 19 is provided inside the housing 1. One end of the friction connector 19 is connected to the automatic opener / closer 20. The friction connector 19 is located below the automatic opener / closer 20. A plug connector 23 is installed on the side wall of the housing 1. A shut-off switch is provided at the end of the housing 1 away from the plug connector 23. The load end connector 11 and the actuating rod connector 9 are tightly fitted together. The central through hole of the two is coaxially sleeved on the rod body of the actuating rod 10. The protrusion 13 protrudes from the inner side of the actuating rod connector 9. The protrusion 13 can only slide horizontally along the long slot 18. The slot length is the stroke difference between the L-shaped indicator rod connector 14 and the actuating rod connector 9. The actuating rod connector 9, the load end connector 11, the pin 12, and the L-shaped indicator rod connector 14 are all arranged inside the housing 1 between the actuating rod 10 and the indicator rod 22, and are set independently of the transmission components inside the housing 1.

[0025] By employing a sliding fit structure design with reserved stroke difference, the mechanical linkage between the actuating lever 10 and the indicating lever 22 can be completed while buffering stress caused by assembly errors and timing deviations, avoiding rigid wear of components, extending the overall service life of the linkage mechanism, and ensuring long-term operational stability. When the actuating lever 10 is fully extended to the standard opening stroke of the turnout, the automatic opener / closer 20 and the shift contactor 21 synchronously trigger the positioning signal, the motor 3 stops outputting power, the friction connector 19 provides overload buffering, and the motor 3 idles when the switch rail is jammed, preventing lever breakage. This design is suitable for multi-motor synchronous traction scenarios. The actuator rod connector 9, load end connector 11, and L-shaped indicator rod connector 14 are made of forged steel in one piece, with thickened side walls to improve structural strength under high tension conditions. The long slot 18 is lengthened by 20mm to expand the stroke compensation range and adapt to the timing deviation of multiple switch machines working together. Anti-disengagement springs are added to both ends of the pin 12 to prevent the pin 12 from loosening under long-term reciprocating sliding. Reinforcing ribs are added inside the housing 1. The friction connector 19 has an increased friction plate area to improve overload buffering capacity. The plug connector 23 has added multiple sets of signal wiring terminals to be compatible with multi-machine linkage signal transmission.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A switch machine linkage device, comprising a housing (1), wherein a removable protective shell (2) is provided on the inner side of the housing (1), characterized in that: A motor (3) is fixedly installed inside the housing (1). The output shaft of the motor (3) is equipped with a gear transmission mechanism. An automatic opener (20) and a shift contactor (21) are arranged in sequence inside the housing (1) near the end through which the rod protrudes. The actuating rod (10) is horizontally penetrated on one side of the housing (1). An indicator rod (22) is arranged parallel to the side end of the actuating rod (10). An actuating rod connector (9) is coaxially fitted on the outer side of the housing (1). A load end connector (11) is fitted and stacked on the inner side of the actuating rod connector (9). A pin (12) is arranged on the inner side of the load end connector (11). The pin (12) is perpendicular to the axis of the actuating rod (10) and passes through the actuating rod connector (9) and the load end connector (11) to achieve synchronous locking. The action rod connector (9) is provided with a boss (13) on its side end, and the indicator rod (22) is provided with an L-shaped indicator rod connector (14) on its side end. The top surface of the L-shaped indicator rod connector (14) is provided with a circular positioning hole (15) and an elliptical positioning hole (16) in sequence. The left and right side walls of the L-shaped indicator rod connector (14) are symmetrically provided with hexagonal screw countersunk through holes (17). The tail of the L-shaped indicator rod connector (14) is bent downward to form a bent section. The bent section is provided with a horizontal through slot (18). The boss (13) is embedded in the slot (18). The two slide together along the length of the slot. The action rod (10) drives the action rod connector (9) and the boss (13) to move synchronously. When the boss (13) slides to the end of the slot (18), it pulls the L-shaped indicator rod connector (14) and synchronously drives the indicator rod (22) to complete the turnout linkage.

2. The switch machine linkage device according to claim 1, characterized in that: The gear transmission mechanism includes a first gear (4), which meshes with a second gear (5), and the second gear (5) is fixedly connected to a third gear (6). The third gear (6) meshes with a driven gear (7), and the driven gear (7) is coaxially connected to a lead screw (8).

3. The switch machine linkage device according to claim 1, characterized in that: The long slot (18) is formed on the downward bending section of the L-shaped indicator rod connector (14). The extension direction of the long slot (18) is consistent with the extension and retraction direction of the action rod (10). The length of the long slot (18) limits the horizontal sliding stroke of the boss (13).

4. The switch machine linkage device according to claim 1, characterized in that: The circular positioning hole (15) and the elliptical positioning hole (16) are distributed in parallel on the top surface of the L-shaped indicator rod connector (14). The circular positioning hole (15) and the elliptical positioning hole (16) are respectively fitted on the outside of the indicator rod (22) with its own fastening bolt.

5. The switch machine linkage device according to claim 1, characterized in that: The hexagonal screw countersunk holes (17) are arranged symmetrically in pairs on the left and right side walls of the L-shaped indicator rod connector (14), and the locking screw passes through the hexagonal screw countersunk holes (17) laterally to abut the indicator rod (22).

6. The switch machine linkage device according to claim 1, characterized in that: The housing (1) is provided with a friction connector (19), one end of which is connected to the automatic opener (20), and the friction connector (19) is located below the automatic opener (20).

7. The switch machine linkage device according to claim 1, characterized in that: The housing (1) is fitted with a connector (23) on its side wall, and a shut-off switch is provided at the end of the housing (1) away from the connector (23).

8. The switch machine linkage device according to claim 1, characterized in that: The load end connector (11) and the action rod connector (9) are closely fitted together, and their central through holes are coaxially fitted onto the action rod (10) body.

9. The switch machine linkage device according to claim 1, characterized in that: The boss (13) protrudes from the inner side of the actuating rod connector (9). The boss (13) can only slide horizontally along the long slot (18). The slot length is the difference in stroke between the L-shaped rod connector (14) and the actuating rod connector (9).

10. The switch machine linkage device according to claim 1, characterized in that: The actuator rod connector (9), load end connector (11), pin (12), and L-shaped indicator rod connector (14) are all arranged inside the housing (1) between the actuator rod (10) and the indicator rod (22), and are set independently of the transmission components inside the housing (1).

Images