CN114475704A

CN114475704A - Electric switch machine

Info

Publication number: CN114475704A
Application number: CN202210287298.3A
Authority: CN
Inventors: 王小毅; 张树东
Original assignee: Tianjin Railway Signal Co Ltd
Current assignee: Tianjin Railway Signal Co Ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-05-13

Abstract

The invention discloses an electric switch machine, which belongs to the technical field of switch machines and comprises an indication rod, an action rod and a power assembly, wherein the action rod is provided with a locking mechanism, the indication rod is provided with a contact assembly, the power assembly comprises a toggle plate, a motor for driving the toggle plate to move and a transmission system; the locking mechanism comprises a locking body and a locking hook; an inserting hole is horizontally formed in the locking body along the motion direction of the action rod, a through hole is formed in the locking body, the inserting hole is communicated with the through hole through a communicating hole, a locking roller is arranged in the communicating hole, a stop block is arranged above the locking roller in the locking body, and a groove matched with the locking roller is formed in the front end of the locking hook. The invention ensures the locking action of the action rod to be effective and reliable, has the protection effect on the extrusion cutting pin and avoids the phenomenon of abnormal fracture; the stability and the precision of transmission are ensured, the structure is compact, and the device can be suitable for more severe limit requirements; the conversion efficiency and the stability of the dynamic and static contact points are improved.

Description

Electric switch machine

Technical Field

The invention belongs to the technical field of switch machines, and particularly relates to an electric switch machine.

Background

The point switch is an important signal basic device for reliably switching the position of the turnout, changing the opening direction of the turnout, locking the switch point and reflecting the position of the turnout, and can well ensure the driving safety, improve the transportation efficiency and improve the labor intensity of driving personnel.

The locking mechanism arranged on the action rod in the point switch is used for ensuring that the action rod locks the position of the action rod when moving to the positions at two ends, and the existing locking mechanism cannot ensure the effectiveness and reliability of the locking of the action rod at the positions at two ends; a squeezing pin is arranged between the existing locking mechanism and an action rod, so that when a switch is squeezed or the instantaneous impact force is too large, the switch machine is protected from being damaged. The extrusion cutting pin is safe and reliable with the extrusion cutting force unchanged, and is the device with the simplest structure and process. However, in the using process of the point switch, the pinch-cut pin is directly stressed, the train wheels vibrate when passing through the pinch-cut pin, the pinch-cut pin is in a vibration abrasion state for a long time, the phenomenon of abnormal fracture is easy to occur, and the normal operation of the point switch cannot be ensured;

electric switches powered by electric motors generally use mechanical transmission to transmit power. The existing switch machine power guide mechanism has a long transmission chain, so that the structure is complex, the transmission precision and stability cannot be ensured, the occupied space and the volume are large, and the strict limit requirement cannot be met; the existing switch machine power guide mechanism does not have a protection mechanism, and when abnormal jamming occurs in switch conversion, the switch machine is easily damaged;

the dynamic and static contact group device in the point switch is applied to the railway point switch for controlling the position of a turnout and realizing the electric chain reaction, and the dynamic and static contact group is an extremely important electric component. The structure sensitivity of the movable and static contact group device for the existing switch machine for triggering the conversion of the movable and static contacts is poor, so that the conversion efficiency is low, and the phenomenon of blocking is easy to occur; and the switching is inconvenient, and the reliability and stability of position holding are poor;

during the switching process of the turnout, the turnout position is indicated by the cooperation of an indicating rod connected to the switch rail or the point rail and a contact group. The existing indication rod adopts a structure of splicing main and auxiliary rods, so that the rigidity is poor, and the situation that the indication rod is bent and deformed due to the fact that a turnout is squeezed easily occurs after the indication rod is used for many times; and the strength and rigidity of the joint of the existing indicating rod and the turnout are poor, and the existing indicating rod is easy to break in the stress process, so that the safety and the reliability of equipment are influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the electric switch machine which can ensure the locking action of the action rod to be effective and reliable, has the protection effect on the pinch-cut pin and avoids the phenomenon of abnormal fracture; the device ensures the stability and precision of transmission, has compact structure and small and exquisite appearance, and can be suitable for more severe limit requirements; the conversion efficiency and stability of the movable and static contacts are improved, the switching between actions and an indicating circuit is realized, the switching is convenient, and the switching between the movable and static contacts is in place and reliable; the rigidity of the display rod is improved and the display rod is not easy to deform.

The invention is realized in the way that the electric switch machine comprises a display rod, an action rod and a power assembly for driving the display rod and the action rod to act, wherein the action rod is provided with a locking mechanism for locking the action rod at two end positions, the display rod is provided with a contact assembly,

the power assembly comprises a toggle plate, a motor and a transmission system, wherein the toggle plate is used for driving the action rod to act and toggle the locking mechanism and the contact assembly;

the locking mechanism comprises a locking body which is sleeved on the action rod and is connected with the action rod through an extrusion pin and an extrusion component, and a locking hook which is arranged on the inner wall of the box body of the point switch and can realize locking action with the locking body; an insertion hole for inserting a lock hook is horizontally formed in the locking body along the motion direction of the action rod, a through hole for penetrating through the toggle plate is formed in the locking body, the insertion hole is communicated with the through hole through a communication hole, a locking roller capable of moving up and down in the communication hole is arranged in the communication hole, a stop block used for limiting the locking roller is arranged above the locking roller in the locking body, and a groove matched with the locking roller is formed in the front end of the lock hook.

Furthermore, the two ends of the locking body are provided with squeezing components on one side close to the contact assembly, inserts are embedded in the action rod at positions opposite to the squeezing components, clamping grooves are formed in the inserts, the squeezing components comprise first elastic pieces, clamping columns and steering blocks, the first elastic pieces are arranged in the locking body, the steering blocks rotate through steering pins, one end of each steering block abuts against the corresponding first elastic piece, and the other end of each steering block pushes the corresponding clamping column to be closely attached to the corresponding clamping groove.

Furthermore, a fracture representation component is arranged on one side, close to the contact assembly, of the locking body and comprises a fracture representation ejector rod vertically arranged in the locking body, a through hole is formed in the fracture representation ejector rod in the axial direction, a first rotating wheel is rotatably arranged in the through hole through a rotating shaft, a transverse ejector rod is horizontally arranged in the locking body, a trapezoidal groove is formed in an insert in the action rod, a second rotating wheel is rotatably arranged at one end of the transverse ejector rod through the rotating shaft and is tangent to the contact surface of the trapezoidal groove, the other end of the transverse ejector rod is arranged in the through hole and is provided with a contact inclined surface tangent to the first rotating wheel, a spring is sleeved on the fracture representation ejector rod, and the upper end of the spring is connected with the lower surface of the transverse ejector rod.

Furthermore, the transmission system comprises a speed reducer connected with a motor, the output end of the speed reducer is connected with a ball screw, a nut of the ball screw is provided with a push plate sleeve, the poking plate is arranged on the push plate sleeve, and the output shaft of the motor is connected with the input shaft of the speed reducer through a friction coupler.

Further, a linear guide rail is arranged on the side wall of the switch machine box body, a sliding block is arranged on the linear guide rail, and the sliding block is connected with the side wall of the push plate sleeve; and a self-lubricating sliding plate is arranged between the push plate sleeve and the bottom shell of the switch machine box body.

Furthermore, the motor is arranged above the ball screw through an installation plate, the installation plate is a rectangular plate, and one group of adjacent edges of the installation plate is fixedly connected with the switch box body;

the reduction gear includes along the gear train of vertical direction distribution, be provided with the opening that is used for the gear train to run through on the mounting panel.

Furthermore, the push plate sleeve comprises an upper sleeve body and a lower sleeve body which are connected through a fastener, and a placing cavity for containing the nut is formed between the upper sleeve body and the lower sleeve body.

Furthermore, the contact assembly comprises a contact base body and a movable contact support rotatably arranged on the contact base body through a rotating shaft, a movable contact group is arranged at the upper end of the movable contact support, a fixed contact group is arranged on the contact base body, a supporting block is arranged on one side, close to the action rod, of the movable contact support, and a supporting part used for stirring the movable contact support to rotate is arranged on the supporting block;

a clamping mechanism which can be clamped with the supporting block is arranged on one side, close to the supporting block, of the contact base substrate, the clamping mechanism comprises a protruding portion arranged on the contact base substrate, a placing groove is arranged in the protruding portion, and a clamping block is arranged in the placing groove; a clamping step surface matched with the clamping block is arranged on the clamping surface of the supporting block;

and a second elastic piece is arranged between the clamping block and the placing groove along the movement direction of the clamping block, and a pushing part for pushing the clamping block to move along the placing groove is extended from the clamping surface of the clamping block.

Furthermore, a matching supporting leg capable of being matched with the indicating rod is arranged on the movable contact support, the matching supporting leg is arranged between two side walls of the movable contact support and is arranged in the contact base body, and an inspection block capable of being clamped with an inspection notch in the indicating rod is integrally arranged at the joint of the matching supporting leg and the rotating shaft; the tail end of the inspection block is provided with a clamping part, and one side of the clamping part is provided with a supporting roller.

Furthermore, the movable contact point bracket comprises a left bracket and a right bracket which are oppositely arranged, and the left bracket and the right bracket are connected through a tension spring;

the supporting part is rotatably provided with a poking roller through a rotating shaft; the pushing portion is provided with a pushing roller through a rotating shaft in a rotating mode.

Furthermore, the indication rod comprises a hollow indication outer rod and an indication inner rod arranged in the indication outer rod, a semicircular cut is formed in the indication outer rod, the tail end of the indication inner rod is arranged in the semicircular cut, the tail end of the indication inner rod is connected with an inner rod connecting block, and the inner rod connecting block and the indication outer rod positioned at the semicircular cut are spliced into a complete circular section; and an inspection notch used for being inserted into the inspection block on the movable contact support is formed at the splicing part of the inner connecting block and the outer indicating rod.

Furthermore, an outer rod notch and an outer rod guide groove are arranged on the splicing surface of the semicircular arc cut of the outer rod, and a slope surface is arranged at one end, far away from the outer rod notch, of the outer rod guide groove; an inner rod notch and an inner rod guide groove are formed in the splicing surface of the inner rod connecting block, and a slope surface is arranged at one end, away from the inner rod notch, of the inner rod guide groove; 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.

Furthermore, the connecting end of the representation outer rod is provided with a sleeve connecting piece used for connecting the switch rail or the point rail, the connecting end of the representation outer rod is a semicircular pipe, a filling block is arranged in the semicircular pipe, and the sleeve connecting piece is arranged on the representation outer rod and the filling block through a fastening piece.

Furthermore, the connecting end of the indication inner rod is provided with an inner rod connecting piece used for connecting a switch rail or a point rail through a fastener, and the connecting end of the indication inner rod is of a semi-cylindrical structure.

Furthermore, an annular groove is formed in the indication inner rod, and a wear-resistant sleeve is arranged on the annular groove;

an O-shaped ring is arranged between the hollow type representation outer rod and the representation inner rod.

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

Furthermore, the poking plate comprises a connecting part used for being connected with the push plate sleeve, a penetrating part penetrating through the locking body and a poking part poking the contact assembly, the cross section of the penetrating part is of a trapezoidal structure, and a trapezoidal supporting plate and a poking head are arranged on the poking part.

Furthermore, the two lock hooks are arranged on two sides of the inner wall of the switch machine box body along the motion direction of the action rod; and a wear-resistant sheet is arranged on the contact surface of the latch hook and the insertion hole.

The invention has the advantages and technical effects that: by adopting the technical scheme, the transmission stability and precision can be ensured, the structure is compact, the appearance is small and exquisite, the device can meet the more severe limit requirement, the switch machine can be protected, the switch machine is prevented from being damaged, and the safety of equipment is improved;

the locking mechanism ensures the locking action of the action rod to be effective and reliable, and improves the stability and reliability of the equipment; the extrusion cutting pin can be protected, the phenomenon of abnormal fracture is avoided, and the extrusion cutting pin has a fracture indication function;

the contact assembly can improve the conversion efficiency and stability of the movable and static contacts, realize the switching of actions and indicating circuits, is convenient to switch and is reliable in switching of the movable and static contacts;

the display rod adopts the structural design of the socket joint of the display outer rod and the display inner rod, the rigidity of the display rod is improved, the display rod is not easy to deform, and the situation that the display rod is bent and deformed due to the fact that the turnout is squeezed after being used for many times is avoided.

Drawings

Fig. 1 is a schematic perspective view of an electric switch machine according to an embodiment of the present invention;

FIG. 2 is a perspective view of the overall structure of the powertrain provided by the embodiment of the present invention;

FIG. 3 is a front view of the overall structure of the powertrain according to the embodiment of the present invention;

FIG. 4 is a schematic view of the connection between the push plate sleeve and the sliding block according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a push plate sleeve structure provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of a mounting plate structure provided in an embodiment of the present invention;

fig. 7 is a schematic view of the installation of the power assembly in the switch machine box according to the embodiment of the invention;

FIG. 8 is a schematic diagram of a toggle plate structure provided in an embodiment of the present invention;

fig. 9 is a schematic view of the installation of the locking mechanism in the box of the switch machine according to the embodiment of the invention;

FIG. 10 is a schematic structural view of a locking mechanism provided in accordance with an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a locking mechanism provided by an embodiment of the present invention;

FIG. 12 is a schematic view of an actuator lever according to an embodiment of the present invention;

FIG. 13 is a schematic view of a latch hook structure provided by an embodiment of the present invention;

FIG. 14 is a schematic view of the connection of the break-out assembly and break-show assembly to the actuating rod provided by the present embodiment;

FIG. 15 is a cross-sectional view of a break-away representation assembly provided by an embodiment of the present invention;

fig. 16 is a schematic perspective view of a contact assembly according to an embodiment of the present invention;

fig. 17 is a schematic structural view of a contact base and a fastening mechanism according to an embodiment of the invention;

FIG. 18 is a schematic structural diagram of a movable contact support according to an embodiment of the present invention;

FIG. 19 is a schematic view of a mating leg and an inspection block provided by an embodiment of the invention;

fig. 20 is a front view of the overall construction of a contact assembly according to an embodiment of the present invention;

FIG. 21 is a perspective view showing the overall construction of the rod provided by the embodiment of the present invention;

FIG. 22 is a schematic diagram illustrating the construction of an outer rod provided by an embodiment of the present invention;

fig. 23 is a schematic diagram illustrating an inner rod structure according to an embodiment of the present invention.

In the figure, 1, a power assembly; 2. a locking mechanism; 3. an action lever; 4. a presentation lever; 5. a contact assembly; 6. a switch machine box body; 7. a motor; 8. a friction coupling; 9. a speed reducer; 9-1, a gear set; 10. mounting a plate; 10-1, opening; 11. a ball screw; 11-1, a nut; 12. a push plate sleeve; 12-1, an upper sleeve body; 12-2, a lower sleeve body; 13. a linear guide rail; 14. a slider; 15. a poking plate; 15-1, a connecting part; 15-2, a penetration; 15-3, a toggle part; 15-4, a toggle head; 15-5, a trapezoidal supporting plate; 16. self-lubricating sliding plates; 17. a locking body; 17-1, inserting hole; 17-2, a communicating hole; 17-3, a through hole; 18. a latch hook; 18-1, a groove; 18-2, abrasion resistant sheet; 19. a pinch-off pin; 20. squeezing and removing the component; 20-1, a first elastic member; 20-2, a steering block; 20-3, clamping columns; 21. an outage representation component; 21-1, broken represents a mandril; 21-2, through holes; 21-3, a first runner; 21-4, a transverse ejector rod; 21-5, a second runner; 21-6, contact inclined plane; 21-7 springs; 22. a stopper; 23. locking the roller; 24. an insert; 24-1, a clamping groove; 24-2, trapezoidal grooves; 25. a contact base substrate; 26. a movable contact point bracket; 26-1, mating legs; 26-2, carrying a roller; 26-3, a check block; 26-4, a clamping part; 26-5, a left bracket; 26-6, right bracket; 27. a rotating shaft; 28. supporting the block; 28-1, a support part; 28-2, shifting the roller; 28-3, clamping the step surface; 29. a clamping mechanism; 29-1, a projection; 29-2, placing grooves; 29-3, a clamping block; 29-4, a second elastic member; 29-5, a pushing part; 29-6, pushing the roller; 30. a movable contact group; 31. a stationary contact group; 32. a tension spring; 33. represents an outer rod; 33-1, a semicircular arc notch; 33-2, outer rod gap; 33-3, outer rod guide grooves; 33-4, showing the connecting end of the outer rod; 33-5, a sleeve connector; 33-6, filling blocks; 34. an inner rod is shown; 34-1, the connecting end of the inner rod; 34-2, an inner rod connecting piece; 34-3, an annular groove; 35. an inner rod connecting block; 35-1, an inner rod notch; 35-2, an inner rod guide groove; 36. the gap is checked.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 23, the present application provides an electric switch machine including a indication rod 4, an operation rod 3, and a power train 1 for driving the indication rod 4 and the operation rod 3 to operate, wherein the operation rod 3 is provided with a locking mechanism 2 for locking the operation rod 3 at both end positions, and the indication rod 4 is provided with a contact assembly 5.

As shown in fig. 2 to 8, the power assembly 1 includes a toggle plate 15 for driving the actuating rod 3 to actuate and toggle the locking mechanism 2 and the contact assembly 5, a motor 7 for driving the toggle plate 15 to make a linear motion, and a transmission system; the transmission system comprises a speed reducer 9 connected with a motor 7, the output end of the speed reducer 9 is connected with a ball screw 11, a push plate sleeve 12 is arranged on a nut 11-1 of the ball screw 11, a poking plate 15 is installed on the push plate sleeve 12, the poking plate 15 comprises a connecting portion 15-1 used for being connected with the push plate sleeve 12, a penetrating portion 15-2 penetrating through a locking body 17 and a poking portion 15-3 poking a contact assembly 5, the cross section of the penetrating portion 15-2 is of a trapezoidal structure, a trapezoidal supporting plate 15-5 and a poking head 15-4 are arranged on the poking portion 15-3, the trapezoidal supporting plate 15-5 and the penetrating portion 15-2 are arranged in a mutually perpendicular mode, and the poking head 15-4 is horizontally arranged on one side, close to the contact assembly 5, of the trapezoidal supporting plate 15-5.

The output shaft of the motor 7 is connected with the input shaft of the speed reducer 9 through a friction coupling 8; the switch machine box body 6 is characterized in that a linear guide rail 13 is arranged on the side wall of the switch machine box body 6, a sliding block 14 is arranged on the linear guide rail 13, and the sliding block 14 is connected with the side wall of the push plate sleeve 12. Through the linear guide rail 13 and the sliding block 14, when the ball screw 11 drives the push plate sleeve 12 to act, the side wall of the push plate sleeve 12 moves on the linear guide rail 13 through the sliding block 14, and the linear guide rail 13 and the sliding block 14 play roles in guiding and fixing, so that the service life of the ball screw 11 is prolonged, and the transmission stability is ensured; the motor 7 is arranged above the ball screw through a mounting plate 10, the speed reducer 9 comprises gear sets 9-1 distributed in the vertical direction, and openings 10-1 for the gear sets 9-1 to penetrate through are formed in the mounting plate 10. Through the structural layout, the structure is more compact, the overall size is reduced, and the stricter limit requirement is met; a self-lubricating sliding plate 16 is arranged between the push plate sleeve 12 and a bottom shell of the switch machine box body 6, the lower surface of the push plate sleeve 12 moves on the self-lubricating sliding plate 16, shaking of the push plate sleeve 12 during action is avoided, and power conversion is more stable and reliable. The push plate sleeve 12 comprises an upper sleeve body 12-1 and a lower sleeve body 12-2 which are connected through a fastening piece, and a placing cavity for containing the nut 11-1 is formed between the upper sleeve body 12-1 and the lower sleeve body 12-2. The upper sleeve body 12-1 and the lower sleeve body 12-2 are arranged, so that the connection reliability between the nut 11-1 in the ball screw 11 and the push plate sleeve 12 can be improved, and the transmission stability is improved; the mounting plate 10 is a rectangular plate, and a group of adjacent edges of the mounting plate 10 are fixedly connected with the switch box body 6, so that one corner of the mounting plate 10 is arranged in a suspension mode, vibration generated by the motor 7 is partially offset through the suspension position, and vibration and noise of the whole device are reduced.

The arranged friction coupling 8 plays a role in transmission and protection, and when in work, the friction plate of the friction coupling 8 is in a pressing state to play a role in transmission; when the turnout is abnormally blocked during switching, the friction coupler 8 is timely disengaged, so that the point switch is prevented from being damaged, and the protection effect is achieved. The friction coupling 8 improves the performance of the point switch and ensures the driving safety; the friction coupling 8 is arranged on an output shaft of the motor 7, and the motor 7 directly drives the friction coupling 8 and then drives the speed reducer 9 to drive the ball screw 11. Therefore, the pressing force of the friction plate in the friction coupler 8 is greatly reduced, the adhesion of the friction plate is effectively avoided, and the phenomenon of unstable friction of the friction coupler 8 during static and dynamic conversion is overcome.

As shown in fig. 9 to 15, the locking mechanism 2 includes a locking body 17 sleeved on the actuating rod 3 and connected to the actuating rod 3 through an extrusion pin 19 and an extrusion component 20, and two locking hooks 18 disposed on the inner wall of the switch machine box 6 and capable of locking with the locking body 17, wherein the two locking hooks 18 are disposed on two sides of the inner wall of the switch machine box 6 along the movement direction of the actuating rod 3; an insertion hole 17-1 for inserting the latch hook 18 is horizontally arranged in the latch body 17 along the moving direction of the action rod 3, the contact surface of the latch hook 18 and the insertion hole 17-1 is provided with a wear-resistant sheet 18-2, preferably, the wear-resistant sheet 18-2 is a wear-resistant copper sheet, the locking body 17 is provided with a through hole 17-3 for the toggle plate 15 to penetrate through, the through part 15-2 of the toggle plate 15 penetrates through the locking body 17 through the through hole 17-3, the insertion hole 17-1 is communicated with the through hole 17-3 through a communication hole 17-2, a locking roller 23 which can move up and down in the communication hole 17-2 is arranged in the communication hole 17-2, a stop 22 for limiting the locking roller 23 is arranged above the locking roller 23 in the locking body 17, the front end of the locking hook 18 is provided with a groove 18-1 matched with the locking roller 23. One end of the stop block 22 is rotatably arranged in the locking body 17 through a rotating shaft, and the other end of the stop block extends into the insertion hole 17-1 and can be abutted against the locking roller 23; the stopper 22 is provided with a torsion spring for resetting the stopper 22, and two ends of the torsion spring are respectively arranged on the locking body 17 and the stopper 22. Two locking rollers 23 are also arranged and are respectively positioned at two ends of the transverse position of the through hole 17-3, so that when the action rod 3 is locked at the two ends, the two locking rollers 23 are respectively matched with the two locking hooks 18.

An extruding-out component 20 is arranged at one side of two ends of the locking body 17 close to the contact assembly 5, an insert 24 is embedded in the action rod 3 at a position opposite to the extruding-out component 20, a clamping groove 24-1 is formed in the insert 24, the extruding-out component 20 comprises a first elastic part 20-1, a clamping column 20-3 and a steering block 20-2 which is rotatably arranged through a steering pin, the first elastic part 20-1 is abutted against one end of the steering block 20-2, and the clamping column 20-3 is pushed to be closely attached into the clamping groove 24-1 by the other end of the steering block 20-2. The turning block 20-2 is a sector structure. The first elastic member 20-1 is a disc spring. The squeezing-out components 20 are arranged in two groups and are symmetrically arranged on two sides of the broken representation component 21.

A broken representation component 21 is arranged on one side of the locking body 17 close to the contact assembly 5, the broken representation component 21 comprises a broken representation ejector rod 21-1 vertically arranged in the locking body 17, a through hole 21-2 is axially formed in the broken representation ejector rod 21-1, a first rotating wheel 21-3 is rotatably arranged in the through hole 21-2 through a rotating shaft, a transverse ejector rod 21-4 is horizontally arranged in the locking body 17, a trapezoidal groove 24-2 is formed in an insert 24 in the action rod 3, a second rotating wheel 21-5 is rotatably arranged at one end of the transverse ejector rod 21-4 through the rotating shaft, the second rotating wheel 21-5 is tangent to a contact surface of the trapezoidal groove 24-2, the other end of the transverse ejector rod 21-4 is arranged 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 broken representation ejector rod 21-1 is sleeved with a spring 21-7, and the upper end of the spring 21-7 is connected with the lower surface of the transverse ejector rod 21-4.

The locking action of the action rod 3 at the two ends can be ensured through the arranged locking hook 18, the locking body 17 and the internal components; the arranged stop block 22 and the torsion spring can realize that the stop block 22 rotates under the pushing of the locking hook 18 after the locking body 17 enters the locking position, and the locking roller 23 is supported by the penetrating part 15-2 of the toggle plate 15 and clamped in the groove 18-1 of the locking hook 18 to realize locking action; when the locking roller is separated from the locking position, the stop block 22 is reset under the action of the torsion spring to continue to limit the locking roller 23, the structure is simple and light, effective rotation and limiting in the action process can be ensured, the phenomenon of blockage due to blocking is avoided, and the stability is improved;

the locking body 17 is effectively and actively connected with the push plate sleeve 12 and the poking plate 15 in the power system in the force transmission process, the moment is short, the locking is effective and reliable, all component forces are automatically decomposed by the inside of the locking body 17, and no relation exists between the component forces and the outside; the direct friction phenomenon of ferrous metal is avoided in the force transmission and locking process, so that the friction resistance is reduced, and the requirement of maintenance is met.

Through the crowded subassembly 20 that takes off that sets up, play the guard action to crowded cutter pin, need not additionally to install protection device. Through the crowded subassembly 20 that takes off that sets up on the locking body 17, can avoid processing and the crowded device that takes off of installation on action bars 3, can effectual improvement action bars 3's intensity, guarantee the job stabilization nature and the reliability of action bars 3 and equipment. Through the first elastic part 20-1, the steering block 20-2 and the clamping column 20-3 arranged in the squeezing component 20, one end of the first elastic part 20-1 is limited and adjusted through a plug, the clamping column 20-3 is tightly attached to the clamping groove 24-1 of the insert 24 in the action rod 3 under the pushing of the first elastic part 20-1 and the steering block 20-2, the locking body 17 can be effectively connected with the action rod 3, and the normal turnout switching action can be smoothly completed; the disc spring device is arranged in the squeezing component 20, so that the impact force generated when the wheel passes through can be fully absorbed, the damage caused by long-term vibration is avoided, and the reliable connection is ensured.

As shown in fig. 16 to 20, the contact assembly 5 includes a contact base 25 and a movable contact support 26 rotatably disposed on the contact base 25 through a rotating shaft 27, a movable contact group 30 is disposed at an upper end of the movable contact support 26, a stationary contact group 31 is disposed on the contact base 25, a supporting block 28 is disposed on one side of the movable contact support 26 close to the actuating rod 3, a supporting portion 28-1 for rotating the movable contact support 26 is disposed on the supporting block 28, and a toggle roller 28-2 is rotatably disposed on the supporting portion 28-1 through a rotating shaft;

a clamping mechanism 29 which can be clamped with the supporting block 28 is arranged on one side, close to the supporting block 28, of the contact seat base body 25, the clamping mechanism 29 comprises a protruding portion 29-1 arranged on the contact seat base body 25, a placing groove 29-2 is arranged in the protruding portion 29-1, and a clamping block 29-3 is arranged in the placing groove 29-2; a clamping step surface 28-3 matched with the clamping block 29-3 is arranged on the clamping surface of the supporting block 28;

a second elastic piece 29-4 is arranged between the clamping block 29-3 and the placing groove 29-2 along the moving direction of the clamping block 29-3, a pushing part 29-5 for pushing the clamping block 29-3 to move along the placing groove 29-2 extends from the clamping surface of the clamping block 29-3, and a pushing roller 29-6 is rotatably arranged on the pushing part 29-5 through a rotating shaft;

the movable contact support 26 is provided with a matching supporting leg 26-1 which can be matched with the indication rod 4, the matching supporting leg 26-1 is arranged between two side walls of the movable contact support 26 and is arranged in the contact base substrate 25, the joint of the matching supporting leg 26-1 and the rotating shaft 27 is integrally provided with an inspection block 26-3 which can be clamped with an inspection notch 36 on the indication rod 4, the tail end of the inspection block 26-3 is provided with a clamping part 26-4, and one side of the clamping part 26-4 is provided with a supporting roller 26-2; the included angle between the inspection block 26-3 and the matched supporting leg 26-1 is 100-110 degrees, and the preferred included angle is 106 degrees.

The movable contact point bracket 26 comprises a left bracket 26-5 and a right bracket 26-6 which are oppositely arranged, and the left bracket 26-5 and the right bracket 26-6 are connected through a tension spring 32.

Through the arrangement of the clamping mechanism 29 and the supporting block 28, the conversion of the movable and static contacts is triggered through the stirring action of the stirring plate 15 on the supporting block 28 and the clamping mechanism 29, the structural design is ingenious, the triggering mechanism is sensitive, the conversion efficiency of the movable and static contacts is improved, and the blocking condition is avoided; the fixing of the position can be effectively ensured and the reliability and the stability of the position holding can be improved through the arranged clamping block 29-3 and the clamping step surface 28-3 on the supporting block 28; through the arranged toggle roller 28-2 and the push roller 29-6, the switching of the movable and static contacts is ensured, and meanwhile, the advancing process of the toggle plate 15 is not hindered.

As shown in fig. 21 to 23, the indication rod 4 includes an indication outer rod 33 and an indication inner rod 34 disposed in the indication outer rod 33, a semicircular cut 33-1 is disposed on the indication outer rod 33, the end of the indication inner rod 34 is disposed in the semicircular cut 33-1, the end of the indication inner rod 34 is connected with an inner rod joint block 35, and the inner rod joint block 35 and the indication outer rod 33 located at the semicircular cut 33-1 are spliced into a complete circular cross section; an inspection notch 36 for inserting the inspection block 26-3 on the movable contact support 26 is arranged at the joint of the inner connecting block 35 and the outer indicating rod 33.

An outer rod notch 33-2 and an outer rod guide groove 33-3 are arranged on the splicing surface at the semicircular arc notch 33-1, and a slope surface is arranged at one end of the outer rod guide groove 33-3, which is far away from the outer rod notch 33-2; an inner rod notch 35-1 and an inner rod guide groove 35-2 are formed in the splicing surface of the inner rod connecting block 35, and a slope surface is arranged at one end, away from the inner rod notch 35-1, of the inner rod guide groove 35-2; the outer rod notch 33-2 and the inner rod guide groove 35-2 form one inspection notch 36, and the inner rod notch 35-1 and the outer rod guide groove 33-3 form another inspection notch 36.

The connecting end 33-4 of the outer rod is provided with a sleeve connecting piece 33-5 for connecting the switch rail or the point rail, the connecting end 33-4 of the outer rod is a semicircular pipe, a filling block 33-6 is arranged in the semicircular pipe, and the sleeve connecting piece 33-5 is arranged on the outer rod 33 and the filling block 33-6 through fasteners.

The connecting end 34-1 of the representation inner rod is provided with an inner rod connecting piece 34-2 used for connecting a switch rail or a point rail through a fastener, and the connecting end 34-1 of the representation inner rod is of a semi-cylindrical structure.

An annular groove 34-3 is formed in the indication inner rod 34, and a wear-resistant sleeve is arranged on the annular groove 34-3; an O-shaped ring is arranged between the hollow representation outer rod 33 and the representation inner rod 34. The wear resistance between the inner display rod 34 and the outer display rod 33 can be improved, the display action is smoother and more accurate, the safety and the reliability are improved, and the service life is prolonged. An O-ring is provided between the hollow display outer rod 33 and the display inner rod 34, and the sealing property between the display outer rod 33 and the display inner rod 34 is improved.

An inspection notch 36 is arranged at the splicing position of the outer indication rod 33 and the inner indication rod 34 and can be matched with the structure on the movable contact point bracket 26 to realize the position indication of the turnout in the conversion process; the connecting end 33-4 of the outer rod is a semicircular pipe, and the filling block 33-6 is arranged in the semicircular pipe, so that the strength and rigidity of the connecting end of the outer rod 33 are enhanced, the outer rod is prevented from being broken in a stress process, and the safety and the reliability are improved.

When the device works, the motor 7 directly drives the friction coupler 8, the friction plate of the friction coupler 8 is in a compression state, the speed reducer 9 is driven to drive the ball screw 11 to rotate, the nut 11-1 on the ball screw 11 reciprocates along the screw, and then the push plate sleeve 12 and the shifting plate 151 on the push plate sleeve 12 are driven to move, so that the effect that the shifting plate 15 shifts moving and static contacts is achieved.

The power assembly 1 of the switch machine drives the toggle plate 15 to move, the penetrating part 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 to the positions at two ends, the penetrating part 15-2 of the toggle plate 15 moves to the end position of the through hole 17-3, because the cross section of the penetrating part 15-2 is trapezoidal, the inclined plane of the side wall of the penetrating part 15-2 gradually lifts up the locking roller 23, meanwhile, the locking hook 18 is inserted into the insertion hole 17-1 of the locking body 17, the stop block 22 is pushed, the stop block 22 rotates, the limit of the locking roller 23 is cancelled, and when the locking roller 23 is clamped in the groove 18-1 of the locking hook 18, the locking action of the action rod 3 at the end is completed; when the locking position is released, the penetrating part 15-2 of the poking plate 15 moves towards the center of the penetrating hole 17-3, the locking roller 23 moves downwards along one inclined edge of the penetrating part 15-2 and is separated from the groove 18-1 of the locking hook 18, the locking hook 18 is separated from the inserting hole 17-1, and the blocking return is enabled to continue to limit the locking roller 23 under the action of the torsion spring.

When the extrusion cutting pin is used, a certain gap is formed, and the extrusion cutting pin is in an unstressed state, so that the stability of extrusion cutting force is ensured. During normal action, the squeezing-out component 20 is used for carrying out connection stress work, specifically, one end of the first elastic part 20-1 is limited and adjusted through a plug, the clamping column 20-3 is tightly attached to the clamping groove 24-1 of the insert 24 in the action rod 3 under the pushing of the first elastic part 20-1 and the steering block 20-2, the locking body 17 can be effectively connected with the action rod 3, and normal turnout switching action can be smoothly completed; when the extrusion cutting force is larger than 12-15KN, the extrusion component 20 is separated, and the extrusion cutting pin bears the force to work. Specifically, when the clamping force larger than 12-15KN is applied, the clamping column 20-3 originally and closely attached in the clamping groove 24-1 is separated from the clamping groove 24-1, and the steering block 20-2 is pushed to rotate to compress the first elastic piece 20-1; when the switch is jammed or the instantaneous impact force is too large, the pinch-off pin is cut off, and the locking body 17 is separated from the action rod 3, so that the switch machine is protected from being damaged. At the moment, the second rotating wheel 21-5 in the cross ejector rod 21-4 moves along the trapezoidal groove 24-2 and is separated from the trapezoidal groove 24-2, the cross ejector rod 21-4 moves forwards, the first rotating wheel 21-3 moves upwards along the contact inclined surface 21-6 on the cross ejector rod 21-4, and the spring 21-7 pulls the cross ejector rod 21-4 downwards, so that the cross ejector rod 21-1 is ejected out. The off-state indication ejector rod 21-1 ejects out to lift the supporting block 28 on the movable contact support 26, and the movable and static contacts are triggered to be converted, so that the off-state indication function is realized.

When the toggle plate 15 moves from left to right, the movable contact group 30 on the left bracket 26-5 is connected with the left side of the corresponding static contact group 31, and when the toggle plate 15 moves from left to right, because the clamping block 29-3 in the clamping mechanism 29 at the left bracket 26-5 is positioned in the placing groove 29-2 under the action of the supporting block 28, the toggle head 15-4 of the toggle part 15-3 of the toggle plate 15 cannot push the pushing part 29-5 of the clamping block 29-3, but continues to move right; when moving to the supporting 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 supporting part 28-1 and upwardly holds the supporting block 28 and rotates the left bracket 26-5 about the rotating shaft 27. Along with the rotation of the left bracket 26-5, the attaching area of the supporting block 28 and the clamping block 29-3 is gradually reduced until the supporting block is contacted with the clamping step, the clamping block 29-3 is outwards popped out along the placing groove 29-2 under the action of the second elastic element 29-4, so that the clamping block 29-3 is clamped with the clamping step surface 28-3, and the movable contact point group 30 on the left bracket 26-5 is connected with the right side of the corresponding static contact point group 31 and fixes the position of the movable contact point group.

And the moving point group 30 on the right bracket 26-6 is connected with the left side of the corresponding static point group 31 when the moving point group moves to the right bracket 26-6, and the supporting block 28 on the right bracket 26-6 is clamped with the clamping mechanism 29. During the process of moving to the right, the trapezoidal supporting plate 15-5 of the poking plate 15 passes through the poking roller 28-2 on the right bracket 26-6 and cannot support the supporting block 28 and the right bracket 26-6 to rotate. And the moving head 15-4 of the moving plate 15 moves continuously rightwards, the moving head 29-4 passes through the pushing roller 29-6 of the pushing part 29-5 of the clamping block 29-3, the pushing part 29-5 is pushed to move towards the placing groove 29-2, the second elastic element 29-4 is compressed, when the clamping block 29-3 is pushed into the placing groove 29-2, the clamping step surface 28-3 of the supporting block 28 on the right bracket 26-6 is not clamped with the clamping block 29-3 any more, and the movable contact group 30 on the right bracket 26-6 is connected with the right side of the corresponding static contact group 31 under the action of the tension spring 32.

The switch machine power assembly 1 drives the action rod 3 to act, the action rod 3 drives the turnout to move, and the indication outer rod 33 and the indication inner rod 34 in the indication rod 4 are respectively connected with a point rail or a point rail of the turnout through a sleeve connecting piece 33-5 and an inner rod connecting piece 34-2. When the shifting plate 15 in the power assembly 1 drives the action to move from the left end to the right end, when the action is at the leftmost end, the check block 26-3 on the left support 26-5 in the movable and static contact group 31 is inserted into another check notch 36 formed by the inner rod notch 35-1 and the outer rod guide groove 33-3, along with the rightward movement of the action rod 3, the turnout is driven to further drive the outer rod 33 in the indication rod 4 to move, at the moment, the trapezoidal support plate 15-5 of the shifting plate 15 lifts the lifting block 28 of the left support 26-5, so that the left support 26-5 rotates, the lifting roller 26-2 in the left support 26-5 moves along the slope surface in the outer rod guide groove 33-3, the check block 26-3 is separated from the check notch 36, the original indication contact is disconnected, and the contact group conversion is realized.

And the right bracket 26-6 moves continuously rightwards, 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 the moment, the toggle head 15-4 of the toggle plate 15 pushes the clamping mechanism 29, the clamping step surface 28-3 of the supporting block 28 on the right bracket 26-6 is not clamped with the clamping block 29-3, the movable contact point group 30 on the right bracket 26-6 is connected with the right side of the corresponding static contact point group 31 under the action of the tension spring 32, the check block 26-3 of the right bracket 26-6 falls into the check notch 36 formed by the outer rod notch 33-2 and the inner rod guide groove 35-2, and the indication of a new position is switched on.

the locking mechanism 2 ensures the locking action of the action rod 3 to be effective and reliable, and improves the stability and reliability of the equipment; the extrusion cutting pin 19 can be protected, the phenomenon of abnormal fracture is avoided, and the extrusion cutting pin has a fracture indication function;

the contact assembly 5 can improve the conversion efficiency and stability of the moving and static contacts, realize the switching of the action and the indicating circuit, and has convenient switching and reliable switching of the moving and static contacts;

the display rod 4 adopts the sleeve joint structure design of the display outer rod 33 and the display inner rod 34, so that the rigidity of the display rod 4 is improved, the display rod is not easy to deform, and the situation that the display rod 4 is bent and deformed due to the fact that a turnout is squeezed after multiple times of use is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An electric switch machine, comprising a display rod, an action rod and a power assembly for driving the display rod and the action rod to act, wherein the action rod is provided with a locking mechanism for locking the action rod at two end positions, the display rod is provided with a contact assembly, the electric switch machine is characterized in that,

2. The electric switch machine as claimed in claim 1, wherein the locking body has a push-off member at both ends thereof near the side of the contact assembly, an insert is embedded in the actuating rod opposite to the push-off member, the insert is provided with a locking groove, the push-off member includes a first elastic member, a locking post and a turning block rotatably disposed through a turning pin, the turning block abuts against the first elastic member at one end, and pushes the locking post to be closely fitted in the locking groove at the other end.

3. The electric switch machine as claimed in claim 1 or 2, wherein the locking body has a broken indication component at its two ends near the side of the contact assembly, the broken indication component includes a broken indication push rod vertically disposed in the locking body, the broken indication push rod has a through hole axially formed thereon, a first rotating wheel is rotatably disposed in the through hole through a rotating shaft, a cross push rod is horizontally disposed in the locking body, a trapezoidal groove is disposed on an insert block in the actuating rod, one end of the cross push rod is rotatably disposed with a second rotating wheel through a rotating shaft, the second rotating wheel is tangent to the contact surface of the trapezoidal groove, the other end of the cross push rod is disposed in the through hole and is provided with a contact inclined surface tangent to the first rotating wheel, a spring is sleeved on the broken indication push rod, and the upper end of the spring is connected with the lower surface of the cross push rod.

4. The electric switch machine as claimed in claim 1, wherein the transmission system comprises a reducer connected to an electric motor, a ball screw is connected to an output end of the reducer, a push plate sleeve is provided on a nut of the ball screw, the dial plate is mounted on the push plate sleeve, and an output shaft of the electric motor is connected to an input shaft of the reducer through a friction coupling.

5. The electric switch machine as claimed in claim 4, wherein the side walls of the switch machine box are provided with linear guides on which slide blocks are provided, said slide blocks being connected to the push plate sleeves;

and a self-lubricating sliding plate is arranged between the push plate sleeve and the bottom shell of the switch machine box body.

6. The electric switch machine of claim 4, wherein the motor is disposed above the ball screw by a mounting plate, the mounting plate being a rectangular plate, one set of adjacent edges of the mounting plate being fixedly connected to the switch machine housing;

7. The electric switch machine as claimed in claim 4, wherein said push-plate sleeve comprises an upper sleeve body and a lower sleeve body connected by means of fasteners, said upper and lower sleeve bodies defining between them a housing chamber for receiving the nut.

8. The electric switch machine as claimed in claim 1, wherein the contact assembly includes a contact base and a movable contact support rotatably disposed on the contact base through a rotating shaft, the movable contact support having a movable contact set disposed at an upper end thereof, the contact base having a stationary contact set disposed thereon, the movable contact support having a lifting block disposed on a side thereof adjacent to the operating rod, the lifting block having a lifting portion for lifting the movable contact support to rotate;

9. The electric switch machine as claimed in claim 8, wherein said movable contact support is provided with a mating leg capable of mating with the indication rod, said mating leg is disposed between two side walls of the movable contact support and is disposed in the contact base body, and a connection part of said mating leg and the rotation shaft is integrally provided with an inspection block capable of engaging with the inspection notch of the indication rod; the tail end of the inspection block is provided with a clamping part, and one side of the clamping part is provided with a supporting roller.

10. The electric switch machine as claimed in claim 8, wherein the kinematic point supports comprise a left support and a right support which are oppositely arranged and connected through a tension spring;

11. The electric switch machine as claimed in claim 1, wherein the indication rod comprises a hollow indication outer rod and an indication inner rod arranged in the indication outer rod, the indication outer rod is provided with a semi-circular cut, the end of the indication inner rod is arranged in the semi-circular cut, the end of the indication inner rod is connected with an inner rod joint block, and the inner rod joint block is spliced into a complete circular section with the indication outer rod at the position of the semi-circular cut; and an inspection notch used for being inserted into the inspection block on the movable contact support is arranged at the splicing part of the inner rod connecting block and the outer indication rod.

12. The electric switch machine as claimed in claim 11, wherein the splicing surface at the semicircular cut representing the outer rod is provided with an outer rod notch and an outer rod guide groove, and the end of the outer rod guide groove far away from the outer rod notch is provided with a slope surface; an inner rod notch and an inner rod guide groove are formed in the splicing surface of the inner rod connecting block, and a slope surface is arranged at one end, away from the inner rod notch, of the inner rod guide groove; 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.

13. An electric switch machine as claimed in claim 11, characterized in that said connecting ends representing outer bars are provided with outer bar connectors for connecting point rails or point rails, said connecting ends representing outer bars being semi-circular tubes provided with filling blocks, said outer bar connectors being mounted on the representing outer bars and the filling blocks by means of fasteners.

14. An electric switch machine as claimed in claim 11, characterized in that said connecting end of said indicating inner rod is provided with an inner rod coupling member for coupling point rails or point rails by means of fasteners, said connecting end of said indicating inner rod being of semi-cylindrical configuration.

15. An electric switch machine as claimed in claim 11, characterized in that said indication inner rod is provided with an annular groove on which a wear sleeve is provided;

16. The electric switch machine as claimed in claim 1, wherein one end of said block is rotatably disposed in the locking body by means of a rotating shaft, and the other end extends into the insertion hole and is capable of abutting against the locking roller; the stop block is provided with a torsional spring for resetting the stop block, and two ends of the torsional spring are respectively arranged on the locking body and the stop block.

17. The electric switch machine as claimed in claim 1, wherein the striking plate includes a connecting portion for connecting with the push plate sleeve, a penetrating portion penetrating the locking body and a striking portion striking the contact assembly, the penetrating portion having a trapezoidal cross section, and the striking portion is provided with a trapezoidal supporting plate and a striking head.

18. The electric switch machine as claimed in claim 1, characterized in that said two locking hooks are arranged, opposite to each other on both sides of the inner wall of the box of the switch machine in the direction of movement of the actuating rod; and a wear-resistant sheet is arranged on the contact surface of the latch hook and the insertion hole.