An electric switch machine

Abstract

The present invention discloses an electric switch, belonging to the technical field of switch machines, and includes an indicator rod, an operating rod, and a power assembly. The operating rod is provided with a locking mechanism, the indicator rod is provided with a contact assembly, the power assembly includes a toggle plate, a motor for driving the toggle plate, and a transmission system. The locking mechanism includes a locking body and a lock hook. The locking body has an insertion hole horizontally provided along the direction of movement of the operating rod, the locking body is provided with a through hole, the insertion hole and the through hole are connected by a connecting hole, a locking roller is provided in the connecting hole, a stopper is provided above the locking roller in the locking body, and a groove matching the locking roller is provided at the front end of the lock hook. The present invention ensures the effective and reliable locking action of the operating rod, protects the extrusion pin, and avoids abnormal breakage; ensures the stability and precision of the transmission, has a compact structure, and can be applied to more stringent limit requirements; and improves the conversion efficiency and stability of the dynamic and static contacts.

Description

Technical Field

[0001] The present invention belongs to the technical field of switch machines, and in particular relates to an electric switch machine. Background Art

[0002] A switch machine is an important signal infrastructure equipment used to reliably switch the position of the switch, change the direction of the switch opening, lock the switch point rail, and reflect the position of the switch. It can well ensure driving safety, improve transportation efficiency, and improve the labor intensity of drivers.

[0003] The locking mechanism provided on the operating rod in the switch is used to ensure that the operating rod is locked when it moves to the two end positions, but the existing locking mechanism cannot ensure that the operating rod is locked effectively and reliably at the two end positions; a shear pin is provided between the existing locking mechanism and the operating rod to protect the switch from being damaged when the switch is squeezed or the instantaneous impact force is too large. The shear pin is a device with a constant shear force, is safe and reliable, and has the simplest structure and process. However, during the use of the switch, since the shear pin is directly subjected to force, vibration is generated when the train wheels pass through, and the shear pin is in a state of vibration and wear for a long time, and is very prone to abnormal breakage, making it impossible to ensure the normal operation of the switch;

[0004] Electric switch machines, powered by electric motors, typically use mechanical transmission to transmit power. However, existing switch power guide mechanisms have lengthy transmission chains, making their structures complex and unable to guarantee transmission accuracy and stability. Furthermore, they occupy a large volume and cannot meet stringent limit requirements. Existing switch power guide mechanisms lack protection mechanisms, making them susceptible to damage when abnormal jamming occurs during turnout switching.

[0005] The static and dynamic contact assembly in a switch machine is used to control the position of the turnout and realize the electrical chain reaction. The static and dynamic contact assembly is an extremely important electrical component in railway switch machines. Existing switch machines use static and dynamic contact assemblies to install the static and dynamic contacts. The structure that triggers the dynamic and static contact switching has poor sensitivity, resulting in low conversion efficiency and prone to jamming. In addition, the switching is inconvenient and the reliability and stability of position maintenance are poor.

[0006] During the switch switching process, the switch position is indicated by the cooperation of a rod and a contact assembly connected to the point rail or point rail. However, the existing rod, which is a combination of a main rod and a secondary rod, has poor rigidity and is prone to bending and deformation after repeated use due to the stress of the switch. Furthermore, the connection between the rod and the switch is weak in strength and rigidity, and is prone to fracture when subjected to stress, compromising the safety and reliability of the equipment. Summary of the Invention

[0007] In response to the problems existing in the prior art, the present invention provides an electric switch machine, which can ensure the effective and reliable locking action of the action rod, protect the extrusion pin, and avoid abnormal breakage; ensure the stability and accuracy of the transmission, have a compact structure, a small appearance, and can be applied to more stringent limit requirements; improve the conversion efficiency and stability of the dynamic and static contacts, realize the switching of the action and indication circuits, and the switching is convenient and the switching of the dynamic and static contacts is reliable; improve the rigidity of the indication rod, and it is not easy to deform.

[0008] The present invention is implemented as follows: an electric switch includes an indicating rod, an operating rod, and a power assembly for driving the indicating rod and the operating rod. The operating rod is provided with a locking mechanism for locking the operating rod at both ends. The indicating rod is provided with a contact assembly.

[0009] The power assembly includes a motor and a transmission system for driving the action rod to move and toggle the locking mechanism and the toggle plate of the contact assembly to drive the toggle plate to perform linear motion;

[0010] The locking mechanism includes a locking body which is sleeved on the operating rod and connected to the operating rod through an extrusion pin and an extrusion assembly, a lock hook which is arranged on the inner wall of the switch machine housing and can realize a locking action with the locking body; an insertion hole for inserting the lock hook is horizontally provided in the locking body along the movement direction of the operating rod, a through hole for penetrating the toggle plate is provided on the locking body, the insertion hole and the through hole are connected by a connecting hole, a locking roller which can move up and down in the connecting hole is provided in the connecting hole, a block for limiting the locking roller is provided in the locking body above the locking roller, and a groove matching the locking roller is provided at the front end of the lock hook.

[0011] Furthermore, an extrusion assembly is provided at both ends of the locking body near one side of the contact assembly, an insert is embedded in the action rod at a position relative to the extrusion assembly, a clamping groove is provided on the insert, and the extrusion assembly includes a first elastic member arranged in the locking body, a clamping column and a steering block arranged by rotating the steering pin, one end of the steering block is against the first elastic member, and the other end pushes the clamping column to fit tightly into the clamping groove.

[0012] Furthermore, the locking body is provided with a break indication component on one side close to the contact assembly, and the break indication component includes a break indication push rod vertically arranged in the locking body, a through hole is axially opened on the break indication push rod, a first rotating wheel is arranged in the through hole by rotating through a rotating shaft, a horizontal push rod is horizontally arranged in the locking body, a trapezoidal groove is provided on the insert in the action rod, a second rotating wheel is arranged at one end of the horizontal push rod by rotating through a rotating shaft, the second rotating wheel is tangent to the contact surface of the trapezoidal groove, the other end of the horizontal push rod is arranged in the through hole, and a contact inclined surface tangent to the first rotating wheel is provided, and a spring is sleeved on the break indication push rod, and the upper end of the spring is connected to the lower surface of the horizontal push rod.

[0013] Furthermore, the transmission system includes a reducer connected to the motor, the output end of the reducer is connected to a ball screw, a push plate sleeve is provided on the nut of the ball screw, the toggle plate is installed on the push plate sleeve, and the output shaft of the motor and the input shaft of the reducer are connected through a friction coupling.

[0014] Furthermore, a linear guide rail is provided on the side wall of the switch machine housing, a slider is provided on the linear guide rail, and the slider is connected to the side wall of the push plate sleeve; a self-lubricating slide is provided between the push plate sleeve and the bottom shell of the switch machine housing.

[0015] Furthermore, the motor is arranged above the ball screw via a mounting plate, the mounting plate is a rectangular plate, and a set of adjacent sides of the mounting plate is fixedly connected to the switch machine housing;

[0016] The reducer includes a gear set distributed in a vertical direction, and the mounting plate is provided with an opening for the gear set to pass through.

[0017] Furthermore, the push plate sleeve includes an upper sleeve body and a lower sleeve body connected by fasteners, and a placement cavity for accommodating the nut is formed between the upper sleeve body and the lower sleeve body.

[0018] Furthermore, the contact assembly includes a contact seat base and a movable contact bracket rotatably arranged on the contact seat base via a rotating shaft, a movable contact group is arranged on the upper end of the movable contact bracket, a static contact group is arranged on the contact seat base, a lifting block is arranged on the side of the movable contact bracket close to the actuating rod, and a lifting portion is arranged on the lifting block for rotating the movable contact bracket;

[0019] The contact base base is provided with a locking mechanism that can be engaged with the lifting block on one side close to the lifting block, and the locking mechanism includes a protrusion provided on the contact base base, a placement groove is provided in the protrusion, and a locking block is provided in the placement groove; the locking surface of the lifting block is provided with a locking step surface that can cooperate with the locking block;

[0020] A second elastic member is provided between the engaging block and the placement slot along the movement direction of the engaging block, and a pushing portion for pushing the engaging block to move along the placement slot extends from the engaging surface of the engaging block.

[0021] Furthermore, the moving contact bracket is provided with a mating leg that can cooperate with the indicating rod. The mating leg is arranged between the two side walls of the moving contact bracket and is placed in the base of the contact seat. The connection between the mating leg and the rotating shaft is integrally provided with an inspection block that can engage with the inspection notch on the indicating rod; the end of the inspection block is provided with a clamping part, and a supporting roller is provided on one side of the clamping part.

[0022] Furthermore, the movable contact bracket includes a left bracket and a right bracket that are arranged opposite to each other, and the left bracket and the right bracket are connected by a tension spring;

[0023] The lifting portion is provided with a toggle roller which is rotatable via a rotating shaft; the pushing portion is provided with a pushing roller which is rotatable via a rotating shaft.

[0024] Furthermore, the indicating rod includes a hollow indicating outer rod and an indicating inner rod arranged inside the indicating outer rod, the indicating outer rod is provided with a semicircular arc cut, the end of the indicating inner rod is placed in the semicircular arc cut, the end of the indicating inner rod is connected with an inner rod connecting block, the inner rod connecting block and the indicating outer rod located at the position of the semicircular arc cut are spliced into a complete circular cross-section; the splicing of the inner rod connecting block and the indicating outer rod is provided with an inspection notch for inserting the inspection block on the moving contact bracket.

[0025] Furthermore, an outer rod notch and an outer rod guide groove are provided on the splicing surface at the semicircular arc cutout representing the outer rod, and a slope surface is provided on the end of the outer rod guide groove away from the outer rod notch; an inner rod notch and an inner rod guide groove are provided on the splicing surface of the inner rod connecting block, and a slope surface is provided on the end of the inner rod guide groove away from the inner rod notch; the outer rod notch and the inner rod guide groove form an inspection notch, and the inner rod notch and the outer rod guide groove form another inspection notch.

[0026] Furthermore, the connecting end of the outer rod is provided with a sleeve connecting piece for connecting to the point rail or the heart rail, the connecting end of the outer rod is a semicircular tube, a filling block is provided in the semicircular tube, and the sleeve connecting piece is installed on the outer rod and the filling block through fasteners.

[0027] Furthermore, the connecting end of the inner rod is provided with an inner rod connecting piece for connecting to the point rail or the heart rail through a fastener, and the connecting end of the inner rod is a semi-cylindrical structure.

[0028] Furthermore, the inner rod is provided with an annular groove, and the annular groove is provided with a wear-resistant sleeve;

[0029] An O-ring is provided between the hollow outer indicating rod and the inner indicating rod.

[0030] Furthermore, one end of the block is rotatably arranged in the locking body through a rotating shaft, and the other end extends into the insertion hole and can be against the locking roller; a torsion spring for resetting the block is provided on the block, and the two ends of the torsion spring are respectively arranged on the locking body and the block.

[0031] Furthermore, the toggle plate includes a connecting portion for connecting to the push plate sleeve, a penetrating portion penetrating the locking body and a toggle portion of the toggle contact assembly. The cross-section of the penetrating portion is a trapezoidal structure, and the toggle portion is provided with a trapezoidal support plate and a toggle head.

[0032] Furthermore, two locking hooks are provided, and the two locking hooks are relatively arranged on both sides of the inner wall of the switch machine box along the movement direction of the actuating rod; and the contact surface between the locking hook and the insertion hole is provided with a wear-resistant sheet.

[0033] The present invention has the following advantages and technical effects: Due to the adoption of the above technical solution, the stability and accuracy of the transmission can be guaranteed, the structure is compact, the appearance is small, and it can be applied to more stringent limit requirements, and it can protect the switch machine, avoid damage to the switch machine, and improve the safety of the equipment;

[0034] The locking mechanism ensures the effective and reliable locking action of the action rod, improving the stability and reliability of the equipment; it can protect the extrusion pin to avoid abnormal breakage, and has a break indication function;

[0035] The contact assembly can improve the conversion efficiency and stability of the dynamic and static contacts, realize the switching of the action and indication circuits, and the switching is convenient and the switching of the dynamic and static contacts is reliable;

[0036] The indicating rod adopts the structural design of sleeved outer rod and inner rod, which improves the rigidity of the indicating rod and makes it less prone to deformation, thus avoiding the bending and deformation of the indicating rod due to squeezing of the turnout after repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric switch provided by an embodiment of the present invention;

[0038] Figure 2 This is a three-dimensional diagram of the overall structure of the powertrain provided by an embodiment of the present invention;

[0039] Figure 3 This is a front view of the overall structure of the powertrain provided by an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the connection between the push plate sleeve and the slider provided in an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the push plate sleeve structure provided by an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the mounting plate structure provided by an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the installation of a power assembly provided by an embodiment of the present invention within a switch machine housing;

[0044] Figure 8 1 is a schematic diagram of the structure of the toggle plate provided in an embodiment of the present invention;

[0045] Figure 9 This is a schematic diagram of the installation of the locking mechanism provided by an embodiment of the present invention within a switch housing;

[0046] Figure 10 1 is a schematic structural diagram of a locking mechanism provided by an embodiment of the present invention;

[0047] Figure 11 is a cross-sectional view of a locking mechanism provided by an embodiment of the present invention;

[0048] Figure 12 Schematic diagram of the action rod structure provided by an embodiment of the present invention;

[0049] Figure 13 Schematic diagram of the lock hook structure provided by an embodiment of the present invention;

[0050] Figure 14 This is a schematic diagram of the connection between the extrusion assembly, the break indication assembly and the action rod provided in an embodiment of the present invention;

[0051] Figure 15 is a cross-sectional view of a component provided by an embodiment of the present invention;

[0052] Figure 16 is a schematic diagram of the three-dimensional structure of the contact assembly provided by an embodiment of the present invention;

[0053] Figure 17 This is a schematic structural diagram of a contact base and a locking mechanism provided by an embodiment of the present invention;

[0054] Figure 18 1 is a schematic diagram of the structure of a moving contact bracket provided by an embodiment of the present invention;

[0055] Figure 19 This is a schematic diagram of the structure of the matching legs and the inspection block provided by an embodiment of the present invention;

[0056] Figure 20 This is a front view of the overall structure of the contact assembly provided by an embodiment of the present invention;

[0057] Figure 21This is a three-dimensional diagram of the overall structure of the display rod provided by an embodiment of the present invention;

[0058] Figure 22 is a schematic diagram showing the structure of an outer rod provided by an embodiment of the present invention;

[0059] Figure 23 It is a schematic diagram showing the inner rod structure provided by an embodiment of the present invention.

[0060] In the figure, 1. Power assembly; 2. Locking mechanism; 3. Actuating rod; 4. Indicating rod; 5. Contact assembly; 6. Switch housing; 7. Motor; 8. Friction coupling; 9. Reducer; 9-1. Gear set; 10. Mounting plate; 10-1. Opening; 11. Ball screw; 11-1. Nut; 12. Push plate housing; 12-1. Upper housing; 12-2. Lower housing; 13. Linear guide; 14. Slider; 15. Toggle plate; 15-1. Connecting portion; 15-2. Through portion; 15-3. Toggle portion; 15-4. Toggle head; 15-5. Trapezoidal support plate. 16. Self-lubricating slide; 17. Locking body; 17-1. Insertion hole; 17-2. Connecting hole; 17-3. Through hole; 18. Lock hook; 18-1. Groove; 18-2. Wear-resistant sheet; 19. Extrusion pin; 20. Extrusion assembly; 20-1. First elastic member; 20-2. Steering block; 20-3. Clamping column; 21. Break indication assembly; 21-1. Break indication push rod; 21-2. Through hole; 21-3. First rotating wheel; 21-4. Transverse push rod; 21-5. Second rotating wheel; 21-6. Contact slope; 21-7 Spring; 22. Stopper; 23. Locking roller; 24, insert; 24-1, snap-fit groove; 24-2, trapezoidal groove; 25, contact seat base; 26, movable contact bracket; 26-1, matching leg; 26-2, supporting roller; 26-3, inspection block; 26-4, snap-fit portion; 26-5, left bracket; 26-6, right bracket; 27, rotating shaft; 28, lifting block; 28-1, lifting portion; 28-2, toggle roller; 28-3, snap-fit step surface; 29, snap-fit mechanism; 29-1, protrusion; 29-2, placement groove; 29-3, snap-fit block; 29-4, second elastic member; 2 9-5, pushing part; 29-6, pushing roller; 30, moving contact group; 31, static contact group; 32, tension spring; 33, indicating outer rod; 33-1, semicircular arc incision; 33-2, outer rod notch; 33-3, outer rod guide groove; 33-4, indicating the connecting end of the outer rod; 33-5, sleeve connector; 33-6, filling block; 34, indicating inner rod; 34-1, indicating the connecting end of the inner rod; 34-2, inner rod connector; 34-3, annular groove; 35, inner rod connecting block; 35-1, inner rod notch; 35-2, inner rod guide groove; 36, check the notch. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0062] like Figures 1 to 23 As shown, the present application provides an electric switch, including an indicating rod 4, an operating rod 3 and a power assembly 1 for driving the indicating rod 4 and the operating rod 3 to operate, the operating rod 3 is provided with a locking mechanism 2 for locking the operating rod 3 at both end positions, and the indicating rod 4 is provided with a contact assembly 5.

[0063] like Figures 2 to 8 As shown, the power assembly 1 includes a toggle plate 15 for driving the action rod 3 and toggling the locking mechanism 2 and the contact assembly 5, a motor 7 and a transmission system for driving the toggle plate 15 to perform linear motion; the transmission system includes a reducer 9 connected to the motor 7, the output end of the reducer 9 is connected to a ball screw 11, a push plate sleeve 12 is provided on the nut 11-1 of the ball screw 11, the toggle plate 15 is installed on the push plate sleeve 12, and the toggle plate 15 is installed on the push plate sleeve 12. It includes a connecting portion 15-1 for connecting to the push plate sleeve 12, a penetrating portion 15-2 penetrating the locking body 17 and a toggle portion 15-3 for toggle the contact assembly 5. The cross-section of the penetrating portion 15-2 is a trapezoidal structure. A trapezoidal support plate 15-5 and a toggle head 15-4 are provided on the toggle portion 15-3. The trapezoidal support plate 15-5 and the penetrating portion 15-2 are arranged perpendicular to each other, and the toggle head 15-4 is horizontally arranged on the side of the trapezoidal support plate 15-5 close to the contact assembly 5.

[0064] The output shaft of the motor 7 is connected to the input shaft of the reducer 9 via a friction coupling 8. A linear guide 13 is provided on the side wall of the switch housing 6. A slider 14 is provided on the linear guide 13. The slider 14 is connected to the side wall of the push plate sleeve 12. Through the linear guide 13 and the slider 14, when the ball screw 11 drives the push plate sleeve 12 to move, the side wall of the push plate sleeve 12 moves on the linear guide 13 via the slider 14. The linear guide 13 and the slider 14 serve as a guide and fixation, extending the service life of the ball screw 11 and ensuring transmission stability. The motor 7 is mounted above the ball screw via a mounting plate 10. The reducer 9 includes a gear set 9-1 distributed in a vertical direction. The mounting plate 10 is provided with an opening 10-1 for the gear set 9-1 to pass through. This structural layout makes the structure more compact, reduces the overall size, and meets more stringent limit requirements. A self-lubricating slide 16 is provided between the push plate sleeve 12 and the bottom shell of the switch machine housing 6. The lower surface of the push plate sleeve 12 moves on the self-lubricating slide 16, preventing the push plate sleeve 12 from shaking during operation and ensuring more stable and reliable power conversion. The push plate sleeve 12 includes an upper sleeve 12-1 and a lower sleeve 12-2 connected by fasteners. A placement cavity for accommodating the nut 11-1 is formed between the upper sleeve 12-1 and the lower sleeve 12-2. The upper sleeve 12-1 and the lower sleeve 12-2 can improve the reliability of the connection between the nut 11-1 and the push plate sleeve 12 in the ball screw 11, and improve the smoothness of the transmission; the mounting plate 10 is a rectangular plate, and a group of adjacent edges of the mounting plate 10 are fixedly connected to the switch machine case 6, so that one corner of the mounting plate 10 is suspended, and the vibration generated by the motor 7 is partially offset by the suspended part, thereby reducing the vibration and noise of the entire device.

[0065] The friction coupling 8 serves both transmission and protection functions. During operation, the friction plates of the friction coupling 8 are compressed, providing transmission. If a jam occurs during a switch shift, the friction coupling 8 disengages promptly, preventing damage to the switch and providing protection. This improves the performance of the switch and ensures safe operation. The friction coupling 8 is mounted on the output shaft of the motor 7, which directly drives the friction coupling 8, which in turn drives the speed reducer 9, which drives the ball screw 11. This significantly reduces the compression force on the friction plates in the friction coupling 8, effectively preventing adhesion and overcoming the friction instability of the friction coupling 8 during static-dynamic switching.

[0066] like Figures 9 to 15The locking mechanism 2 shown includes a locking body 17 which is sleeved on the operating rod 3 and connected to the operating rod 3 by an extrusion pin 19 and an extrusion assembly 20, and a lock hook 18 which is arranged on the inner wall of the switch housing 6 and can realize a locking action with the locking body 17. The lock hooks 18 are provided with two, and the two lock hooks 18 are relatively arranged on both sides of the inner wall of the switch housing 6 along the movement direction of the operating rod 3; an insertion hole 17-1 for inserting the lock hook 18 is horizontally provided in the locking body 17 along the movement direction of the operating rod 3, and a wear-resistant sheet 18-2 is provided on the contact surface between the lock hook 18 and the insertion hole 17-1. Preferably, the wear-resistant sheet 18-2 is a wear-resistant sheet. The locking body 17 is provided with a through-hole 17-3 for the toggle plate 15 to pass through. Specifically, the through-hole 15-2 of the toggle plate 15 extends through the locking body 17 through the through-hole 17-3. The insertion hole 17-1 and the through-hole 17-3 are connected by a connecting hole 17-2. A locking roller 23 is disposed within the connecting hole 17-2, which can move up and down within the connecting hole 17-2. A stopper 22 is disposed above the locking roller 23 within the locking body 17 to limit the locking roller 23. The front end of the locking hook 18 is provided with a groove 18-1 that matches the locking roller 23. One end of the stopper 22 is rotatably mounted within the locking body 17 via a rotating shaft, and the other end extends into the insertion hole 17-1 and can abut against the locking roller 23. A torsion spring is provided on the stopper 22 to reset the stopper 22. The ends of the torsion spring are respectively disposed on the locking body 17 and the stopper 22. There are also two locking rollers 23 , which are located at both ends of the through hole 17 - 3 lateral position, so that when the action rod 3 is locked at both ends, the two locking rollers 23 cooperate with the two locking hooks 18 respectively.

[0067] The locking body 17 is provided with an extrusion assembly 20 at both ends near the contact assembly 5. An insert 24 is embedded in the operating rod 3 at a position opposite to the extrusion assembly 20. The insert 24 is provided with a snap-in groove 24-1. The extrusion assembly 20 includes a first elastic member 20-1 disposed within the locking body 17, a snap-in column 20-3, and a steering block 20-2 that is pivotally arranged via a steering pin. One end of the steering block 20-2 abuts against the first elastic member 20-1, and the other end pushes the snap-in column 20-3 into close contact with the snap-in groove 24-1. The steering block 20-2 has a fan-shaped structure. The first elastic member 20-1 is a disc spring. Two groups of extrusion assemblies 20 are provided, symmetrically arranged on both sides of the break indication assembly 21.

[0068] The locking body 17 is provided with a break indication component 21 on the side close to the contact assembly 5. The break indication component 21 includes a break indication push rod 21-1 vertically arranged in the locking body 17, a through hole 21-2 is axially opened on the break indication push rod 21-1, a first rotating wheel 21-3 is arranged in the through hole 21-2 through a rotating shaft, a horizontal push rod 21-4 is horizontally arranged in the locking body 17, and a trapezoidal groove 24- is provided on the insert 24 in the action rod 3. 2. One end of the horizontal push rod 21-4 is provided with a second rotating wheel 21-5 through a rotating shaft. The second rotating wheel 21-5 is tangent to the contact surface of the trapezoidal groove 24-2. The other end of the horizontal push rod 21-4 is set in the through hole 21-2 and is provided with a contact inclined surface 21-6 tangent to the first rotating wheel 21-3. The cross-sectional view shows that a spring 21-7 is sleeved on the push rod 21-1, and the upper end of the spring 21-7 is connected to the lower surface of the horizontal push rod 21-4.

[0069] The provided lock hook 18, lock body 17 and internal components can ensure that the action rod 3 can be locked at both end positions; the provided stopper 22 and torsion spring can ensure that when the lock body 17 enters the locked position, the stopper 22 rotates under the push of the lock hook 18, and the locking roller 23 is lifted by the through-hole 15-2 of the toggle plate 15 and engaged in the groove 18-1 of the lock hook 18, thereby achieving the locking action; and when the lock is out of the locked position, the torsion spring causes the stopper 22 to return to its original position and continue to limit the locking roller 23. This structure is simple and lightweight, can ensure effective rotation and limiting during the operation, avoids jamming and clogging, and improves stability;

[0070] During the force transmission process, the locking body 17 is effectively and actively connected with the push plate sleeve 12 and the toggle plate 15 in the power system, with short torque, effective and reliable locking, and all component forces are automatically decomposed by the inside of the locking body 17 without any connection with the outside world; there is no direct friction of ferrous metal during the force transmission and locking process, which not only reduces frictional resistance but also ensures that there is no need for maintenance.

[0071] The extrusion assembly 20 provided protects the extrusion pin without the need for additional protective devices. The extrusion assembly 20 provided on the locking body 17 avoids the need for processing and installing an extrusion device on the actuating rod 3, effectively improving the strength of the actuating rod 3 and ensuring the operational stability and reliability of the actuating rod 3 and the equipment. The first elastic member 20-1, the steering block 20-2, and the clamping column 20-3 provided in the extrusion assembly 20 limit and adjust one end of the first elastic member 20-1 via a screw plug. Driven by the first elastic member 20-1 and the steering block 20-2, the clamping column 20-3 fits snugly into the clamping groove 24-1 of the insert 24 in the actuating rod 3, effectively connecting the locking body 17 and the actuating rod 3 and smoothly completing the normal turnout switching action. The extrusion assembly 20 is provided with a disc spring device that can fully absorb the impact force of the wheels passing through, avoiding damage caused by long-term vibration and ensuring a reliable connection.

[0072] like Figures 16 to 20 As shown, the contact assembly 5 includes a contact seat base 25 and a movable contact bracket 26 rotatably provided on the contact seat base 25 via a rotating shaft 27. A movable contact group 30 is provided at the upper end of the movable contact bracket 26. A static contact group 31 is provided on the contact seat base 25. A lifting block 28 is provided on the side of the movable contact bracket 26 close to the actuating rod 3. The lifting block 28 is provided with a lifting portion 28-1 for rotating the movable contact bracket 26. A driving roller 28-2 is rotatably provided on the lifting portion 28-1 via a rotating shaft.

[0073] A locking mechanism 29 is provided on the side of the contact base 25 close to the lifting block 28, which can be engaged with the lifting block 28. The locking mechanism 29 includes a protrusion 29-1 provided on the contact base 25, a placement groove 29-2 is provided in the protrusion 29-1, and a locking block 29-3 is provided in the placement groove 29-2; the locking surface of the lifting block 28 is provided with a locking step surface 28-3 that can cooperate with the locking block 29-3;

[0074] A second elastic member 29-4 is provided between the engaging block 29-3 and the placement slot 29-2 along the movement direction of the engaging block 29-3. A pushing portion 29-5 extends from the engaging surface of the engaging block 29-3 to push the engaging block 29-3 along the placement slot 29-2. A pushing roller 29-6 is provided on the pushing portion 29-5 to rotate via a rotating shaft.

[0075] The moving contact bracket 26 is provided with a mating leg 26-1 that can cooperate with the indicating rod 4. The mating leg 26-1 is arranged between the two side walls of the moving contact bracket 26 and is placed in the contact seat base 25. The connection between the mating leg 26-1 and the rotating shaft 27 is integrally provided with an inspection block 26-3 that can engage with the inspection notch 36 on the indicating rod 4. The end of the inspection block 26-3 is provided with a locking portion 26-4, and a supporting roller 26-2 is provided on one side of the locking portion 26-4; the angle between the inspection block 26-3 and the mating leg 26-1 is 100~110°, and the preferred angle is 106°.

[0076] The movable contact bracket 26 includes a left bracket 26 - 5 and a right bracket 26 - 6 that are oppositely disposed. The left bracket 26 - 5 and the right bracket 26 - 6 are connected via a tension spring 32 .

[0077] By means of the provided engaging mechanism 29 and the lifting block 28, and the toggling action of the toggle plate 15 on the lifting block 28 and the engaging mechanism 29, the conversion of the dynamic and static contacts is triggered. The structural design is ingenious, the triggering mechanism is sensitive, the conversion efficiency of the dynamic and static contacts is improved, and the occurrence of jamming is avoided; and by means of the provided engaging block 29-3 and the engaging step surface 28-3 on the lifting block 28, the position can be effectively fixed, and the reliability and stability of the position maintenance can be improved; by means of the provided toggle roller 28-2 and the pushing roller 29-6, while ensuring the conversion of the dynamic and static contacts being triggered, the forward movement of the toggle plate 15 can also be ensured to be unobstructed.

[0078] like Figures 21 to 23 As shown, the indicating rod 4 includes an indicating outer rod 33 and an indicating inner rod 34 arranged in the indicating outer rod 33, the indicating outer rod 33 is provided with a semicircular cutout 33-1, the end of the indicating inner rod 34 is placed in the semicircular cutout 33-1, the end of the indicating inner rod 34 is connected with an inner rod connecting block 35, the inner rod connecting block 35 and the indicating outer rod 33 located at the position of the semicircular cutout 33-1 are spliced into a complete circular cross-section; the splicing of the inner rod connecting block 35 and the indicating outer rod 33 is provided with an inspection notch 36 for inserting the inspection block 26-3 on the moving contact bracket 26.

[0079] An outer rod notch 33-2 and an outer rod guide groove 33-3 are provided on the joint surface at the semicircular arc cutout 33-1, and a slope surface is provided on the end of the outer rod guide groove 33-3 away from the outer rod notch 33-2; an inner rod notch 35-1 and an inner rod guide groove 35-2 are provided on the joint surface of the inner rod connecting block 35, and a slope surface is provided on the end of the inner rod guide groove 35-2 away from the inner rod notch 35-1; the outer rod notch 33-2 and the inner rod guide groove 35-2 form an inspection notch 36, and the inner rod notch 35-1 and the outer rod guide groove 33-3 form another inspection notch 36.

[0080] The connecting end 33-4 of the outer rod is provided with a sleeve connecting piece 33-5 for connecting to the point rail or the heart rail. The connecting end 33-4 of the outer rod is a semicircular tube, and a filling block 33-6 is provided in the semicircular tube. The sleeve connecting piece 33-5 is installed on the outer rod 33 and the filling block 33-6 through fasteners.

[0081] The connecting end 34 - 1 representing the inner rod is provided with an inner rod connecting piece 34 - 2 for connecting to a point rail or a heart rail via a fastener, and the connecting end 34 - 1 representing the inner rod is a semi-cylindrical structure.

[0082] The inner rod 34 is provided with an annular groove 34-3, which is fitted with a wear-resistant sleeve. An O-ring is positioned between the hollow outer rod 33 and the inner rod 34. This improves the wear resistance between the inner and outer rods 34, ensuring smoother and more accurate display operations, enhancing safety and reliability, and extending service life. The O-ring is positioned between the hollow outer rod 33 and the inner rod 34 to enhance sealing between the two rods.

[0083] An inspection notch 36 is provided at the joint of the outer rod 33 and the inner rod 34, which can cooperate with the structure on the moving contact bracket 26 to realize the position indication of the turnout during the switching process; the connecting end 33-4 of the outer rod is a semicircular tube, and a filling block 33-6 is provided in the semicircular tube, which enhances the strength and rigidity of the connecting end of the outer rod 33, avoids breakage during the force application process, and improves safety and reliability.

[0084] During operation, the motor 7 directly drives the friction coupling 8. The friction plate of the friction coupling 8 is in a compressed state, driving the reducer 9 to drive the ball screw 11 to rotate. The nut 11-1 on the ball screw 11 reciprocates along the screw, thereby driving the push plate sleeve 12 and the toggle plate 151 on the push plate sleeve 12 to move, thereby realizing the function of the toggle plate 15 to toggle the dynamic and static contacts.

[0085] The power assembly 1 of the switch machine drives the toggle plate 15 to move, and the through portion 15-2 of the toggle plate 15 drives the locking body 17 and the action rod 3 to move through the through hole 17-3. When the movement gradually approaches the two end positions, the through portion 15-2 of the toggle plate 15 moves to the end position of the through hole 17-3. Since the cross section of the through portion 15-2 is trapezoidal, the inclined surface of the side wall of the through portion 15-2 gradually lifts the locking roller 23 upward. At the same time, the lock hook 18 is inserted into the insertion hole 17-1 of the locking body 17, pushing the stopper 22, and the stopper 2 2 is rotated to cancel the restriction on the locking roller 23. When the locking roller 23 is engaged in the groove 18-1 of the lock hook 18, the locking action of the action rod 3 at the end is completed. When the locking position is released, the through portion 15-2 of the toggle plate 15 moves toward the center of the through hole 17-3, and the locking roller 23 moves downward along an oblique side of the through portion 15-2 and disengages from the groove 18-1 of the lock hook 18. The lock hook 18 disengages from the insertion hole 17-1. Under the action of the torsion spring, the gear is reset to continue to restrict the locking roller 23.

[0086] The shear pin has a certain gap when in use, and is in a stress-free state, to ensure the stability of the shear force. During normal operation, the shear assembly 20 is responsible for the connection and force bearing work. Specifically, one end of the first elastic member 20-1 is limited and adjusted by a screw plug. Under the push of the first elastic member 20-1 and the steering block 20-2, the clamping column 20-3 is tightly attached to the clamping groove 24-1 of the inner insert 24 of the operating rod 3, which can effectively connect the locking body 17 and the operating rod 3, and smoothly complete the normal switch switching operation. When the shear force exceeds 12-15KN, the shear assembly 20 is disengaged, and the shear pin is responsible for the force bearing work. Specifically, when subjected to a shearing force greater than 12-15 kN, the clamping post 20-3, which was originally tightly attached to the clamping groove 24-1, disengages from the clamping groove 24-1, pushing the steering block 20-2 to rotate and compress the first elastic member 20-1. When the switch is squeezed or the instantaneous impact force is too great, the shearing pin cuts off, and the locking body 17 separates from the operating rod 3, thereby protecting the switch from damage. At this time, the second runner 21-5 in the horizontal push rod 21-4 moves along the trapezoidal groove 24-2 and disengages from the trapezoidal groove 24-2, the horizontal push rod 21-4 moves forward, and the first runner 21-3 moves upward along the contact slope 21-6 on the horizontal push rod 21-4. The spring 21-7 pulls the horizontal push rod 21-4 downward, causing the breakage indicator push rod 21-1 to be ejected. The break indicating push rod 21 - 1 is pushed out to lift the lifting block 28 on the moving contact bracket 26 , triggering the switching of the moving and static contacts, thereby realizing the break indicating function.

[0087] When the toggle plate 15 moves from left to right, the moving contact group 30 on the left bracket 26-5 is connected to the left side of the corresponding static contact group 31. When the toggle plate 15 moves from left to right, since the locking block 29-3 in the locking mechanism 29 at the left bracket 26-5 is in the placement groove 29-2 under the action of the lifting block 28, the toggle head 15-4 of the toggle part 15-3 of the toggle plate 15 will not push the pushing part 29-5 of the locking block 29-3, but continue to move to the right; when it moves to the lifting block 28 of the left bracket 26-5, the trapezoidal support plate 15-5 of the toggle plate 15 pushes the toggle roller 28-2 of the lifting part 28-1, and lifts the lifting block 28 upward and causes the left bracket 26-5 to rotate around the rotating shaft 27. As the left bracket 26-5 rotates, the contact area between the lifting block 28 and the locking block 29-3 gradually decreases until it contacts the locking step. Under the action of the second elastic member 29-4, the locking block 29-3 pops outward along the placement groove 29-2, so that the locking block 29-3 is locked with the locking step surface 28-3. The moving contact group 30 on the left bracket 26-5 is connected to the right side of the corresponding static contact group 31 and its position is fixed.

[0088] Continuing to move rightward, when it reaches the right bracket 26-6, the movable contact group 30 on the right bracket 26-6 is connected to the left side of the corresponding static contact group 31, and the lifting block 28 on the right bracket 26-6 is engaged with the engaging mechanism 29. During the rightward movement, the trapezoidal support plate 15-5 of the toggle plate 15 passes through the toggle roller 28-2 on the right bracket 26-6, and does not cause the lifting block 28 and the right bracket 26-6 to rotate. Continuing to move to the right, the toggle head 15-4 of the toggle plate 15 passes through the pushing roller 29-6 of the pushing portion 29-5 of the locking block 29-3, pushing the pushing portion 29-5 to move into the placement groove 29-2, compressing the second elastic member 29-4. When the locking block 29-3 is pushed into the placement groove 29-2, the locking step surface 28-3 of the lifting block 28 on the right bracket 26-6 is no longer locked with the locking block 29-3. Under the action of the tension spring 32, the moving contact group 30 on the right bracket 26-6 is connected to the right side of the corresponding static contact group 31.

[0089] The switch power assembly 1 drives the actuating rod 3 to operate, and the actuating rod 3 drives the switch to move. The outer rod 33 and the inner rod 34 in the indicating rod 4 are connected to the switch point rail or the heart rail through the sleeve connecting member 33-5 and the inner rod connecting member 34-2 respectively. When the toggle plate 15 in the power assembly 1 drives the action to move from the left end to the right end, when it reaches the leftmost end, the inspection block 26-3 on the left bracket 26-5 in the dynamic and static contact group 31 is inserted into another inspection gap 36 formed by the inner rod gap 35-1 and the outer rod guide groove 33-3. As the action rod 3 moves to the right, the switch is driven and then the outer rod 33 in the indicating rod 4 is driven to move. At this time, the trapezoidal support plate 15-5 of the toggle plate 15 lifts the lifting block 28 of the left bracket 26-5, causing the left bracket 26-5 to rotate, and the supporting roller 26-2 in the left bracket 26-5 moves along the slope surface in the outer rod guide groove 33-3. The inspection block 26-3 disengages from the inspection gap 36, disconnecting the original indicating contact, and realizing the contact group conversion.

[0090] Continuing to move to the right, the supporting roller 26-2 on the right bracket 26-6 moves along the slope surface of the inner rod guide groove 35-2. At this time, the toggle head 15-4 of the toggle plate 15 pushes the engaging mechanism 29, and the engaging step surface 28-3 of the lifting block 28 on the right bracket 26-6 is no longer engaged with the engaging block 29-3. Under the action of the tension spring 32, the moving contact group 30 on the right bracket 26-6 is connected to the right side of the corresponding static contact group 31, and the inspection block 26-3 of the right bracket 26-6 falls into the outer rod notch 33-2 and the inner rod guide groove 35-2 to form an inspection notch 36, connecting the new position indication.

[0091] The present invention has the following advantages and technical effects: Due to the adoption of the above technical solution, the stability and accuracy of the transmission can be guaranteed, the structure is compact, the appearance is small, and it can be applied to more stringent limit requirements, and it can protect the switch machine, avoid damage to the switch machine, and improve the safety of the equipment;

[0092] The locking mechanism 2 ensures the effective and reliable locking action of the action rod 3, thereby improving the stability and reliability of the equipment; it can protect the extrusion pin 19 to avoid abnormal breakage, and has a break indication function;

[0093] The contact assembly 5 can improve the conversion efficiency and stability of the dynamic and static contacts, realize the switching of the action and the display circuit, and the switching is convenient and the switching of the dynamic and static contacts is reliable;

[0094] The indicating rod 4 adopts a structural design of a sleeved indicating outer rod 33 and an indicating inner rod 34, which improves the rigidity of the indicating rod 4 and is not easy to deform, thereby avoiding the bending and deformation of the indicating rod 4 due to squeezing of the turnout after repeated use.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric switch, comprising an indicator rod, an operating rod, and a power assembly for driving the indicator rod and the operating rod, wherein the operating rod is provided with a locking mechanism for locking the operating rod at both ends, and the indicator rod is provided with a contact assembly, characterized in that: The power assembly includes a motor and a transmission system for driving the action rod to move and toggle the locking mechanism and the toggle plate of the contact assembly to drive the toggle plate to perform linear motion; The locking mechanism includes a locking body which is sleeved on the operating rod and connected to the operating rod through an extrusion pin and an extrusion assembly, a lock hook which is arranged on the inner wall of the switch housing and can realize a locking action with the locking body; an insertion hole for inserting the lock hook is horizontally provided in the locking body along the movement direction of the operating rod, a through hole for penetrating the toggle plate is provided on the locking body, the insertion hole and the through hole are connected by a connecting hole, a locking roller which can move up and down in the connecting hole is provided in the connecting hole, a stopper for limiting the locking roller is provided above the locking roller in the locking body, and a groove which matches the locking roller is provided at the front end of the lock hook; An extrusion assembly is provided at one side of the contact assembly at both ends of the locking body, an insert is embedded in the actuating rod at a position opposite to the extrusion assembly, and a clamping groove is provided on the insert. The extrusion assembly includes a first elastic member arranged in the locking body, a clamping column, and a steering block rotatably arranged by a steering pin, one end of the steering block abuts against the first elastic member, and the other end pushes the clamping column to fit tightly into the clamping groove; A break indication component is provided at one side of the contact assembly at both ends of the locking body, and the break indication component includes a break indication push rod vertically arranged in the locking body, a through hole is axially opened on the break indication push rod, a first rotating wheel is arranged in the through hole through a rotating shaft, a horizontal push rod is horizontally arranged in the locking body, a trapezoidal groove is provided on the insert in the action rod, a second rotating wheel is arranged at one end of the horizontal push rod through a rotating shaft, the second rotating wheel is tangent to the contact surface of the trapezoidal groove, the other end of the horizontal push rod is arranged in the through hole, and a contact inclined surface tangent to the first rotating wheel is provided, a spring is sleeved on the break indication push rod, and the upper end of the spring is connected to the lower surface of the horizontal push rod.

2. The electric switch machine according to claim 1, characterized in that: The transmission system includes a reducer connected to the motor, the output end of the reducer is connected to a ball screw, a push plate sleeve is provided on the nut of the ball screw, the toggle plate is installed on the push plate sleeve, and the output shaft of the motor and the input shaft of the reducer are connected through a friction coupling.

3. The electric switch machine according to claim 2, characterized in that: A linear guide rail is provided on the side wall of the switch machine housing, a slider is provided on the linear guide rail, and the slider is connected to the push plate sleeve; A self-lubricating slide plate is provided between the push plate sleeve and the bottom shell of the switch machine box.

4. The electric switch machine according to claim 2, characterized in that: The motor is arranged above the ball screw through a mounting plate, the mounting plate is a rectangular plate, and a set of adjacent sides of the mounting plate is fixedly connected to the switch machine housing; The reducer includes a gear set distributed in a vertical direction, and the mounting plate is provided with an opening for the gear set to pass through.

5. The electric switch machine according to claim 2, characterized in that: The push plate sleeve comprises an upper sleeve body and a lower sleeve body connected by fasteners, and a placement cavity for accommodating a nut is formed between the upper sleeve body and the lower sleeve body.

6. The electric switch machine according to claim 1, characterized in that: The contact assembly includes a contact seat base and a movable contact bracket rotatably arranged on the contact seat base via a rotating shaft, a movable contact group is arranged on the upper end of the movable contact bracket, a static contact group is arranged on the contact seat base, a lifting block is arranged on the side of the movable contact bracket close to the actuating rod, and a lifting portion is arranged on the lifting block for rotating the movable contact bracket; The contact base base is provided with a locking mechanism that can be engaged with the lifting block on one side close to the lifting block, and the locking mechanism includes a protrusion provided on the contact base base, a placement groove is provided in the protrusion, and a locking block is provided in the placement groove; the locking surface of the lifting block is provided with a locking step surface that can cooperate with the locking block; A second elastic member is provided between the engaging block and the placement slot along the movement direction of the engaging block, and a pushing portion for pushing the engaging block to move along the placement slot extends from the engaging surface of the engaging block.

7. The electric switch machine according to claim 6, characterized in that: The moving contact bracket is provided with a mating support leg that can cooperate with the indicating rod. The mating support leg is arranged between the two side walls of the moving contact bracket and is placed in the base of the contact seat. The connection between the mating support leg and the rotating shaft is integrally provided with an inspection block that can engage with the inspection notch on the indicating rod; the end of the inspection block is provided with a clamping part, and a supporting roller is provided on one side of the clamping part.

8. The electric switch machine according to claim 6, characterized in that: The movable contact bracket includes a left bracket and a right bracket that are arranged opposite to each other, and the left bracket and the right bracket are connected by a tension spring; The lifting portion is provided with a toggle roller which is rotatable via a rotating shaft; the pushing portion is provided with a pushing roller which is rotatable via a rotating shaft.

9. The electric switch machine according to claim 1, characterized in that: The indicating rod includes a hollow indicating outer rod and an indicating inner rod arranged inside the indicating outer rod, the indicating outer rod is provided with a semicircular arc cutout, the end of the indicating inner rod is placed in the semicircular arc cutout, the end of the indicating inner rod is connected with an inner rod connecting block, the inner rod connecting block and the indicating outer rod located at the semicircular arc cutout are spliced into a complete circular cross-section; the splicing of the inner rod connecting block and the indicating outer rod is provided with an inspection notch for inserting the inspection block on the moving contact bracket.

10. The electric switch machine according to claim 9, characterized in that: An outer rod notch and an outer rod guide groove are provided on the joint surface of the semicircular arc cutout representing the outer rod, and a slope surface is provided on the end of the outer rod guide groove away from the outer rod notch; an inner rod notch and an inner rod guide groove are provided on the joint surface of the inner rod connecting block, and a slope surface is provided on the end of the inner rod guide groove away from the inner rod notch; the outer rod notch and the inner rod guide groove form an inspection notch, and the inner rod notch and the outer rod guide groove form another inspection notch.

11. The electric switch machine according to claim 9, characterized in that: The connecting end of the outer rod is provided with an outer rod connecting piece for connecting to the point rail or the heart rail. The connecting end of the outer rod is a semicircular tube with a filling block provided inside the semicircular tube. The outer rod connecting piece is installed on the outer rod and the filling block through fasteners.

12. The electric switch machine according to claim 9, characterized in that: The connecting end of the inner rod is provided with an inner rod connecting piece for connecting to the point rail or the heart rail through a fastener, and the connecting end of the inner rod is a semi-cylindrical structure.

13. The electric switch machine according to claim 9, characterized in that: The inner rod is provided with an annular groove, and the annular groove is provided with a wear-resistant sleeve; An O-ring is provided between the hollow outer indicating rod and the inner indicating rod.

14. The electric switch machine according to claim 1, characterized in that: One end of the stopper is rotatably arranged in the locking body through a rotating shaft, and the other end extends into the insertion hole and can resist the locking roller; a torsion spring for resetting the stopper is provided on the stopper, and the two ends of the torsion spring are respectively arranged on the locking body and the stopper.

15. The electric switch machine according to claim 1, characterized in that: The toggle plate includes a connecting portion for connecting with the push plate sleeve, a penetrating portion penetrating the locking body and a toggle portion of the toggle contact assembly. The cross section of the penetrating portion is a trapezoidal structure, and the toggle portion is provided with a trapezoidal supporting plate and a toggle head.

16. The electric switch machine according to claim 1, characterized in that: There are two locking hooks, which are relatively arranged on both sides of the inner wall of the switch machine box along the movement direction of the actuating rod; and the contact surface between the locking hook and the insertion hole is provided with a wear-resistant sheet.

Images