Electric hooking lock device structure for turnout locking

Abstract

The utility model discloses an electric hooking lock device structure for turnout locking. The electric hooking lock device structure comprises a main body frame, a motor, a speed reducer, a coupler, a locking block, a connecting rail and a lock hook. The scheme has the advantages of being simple in structure, convenient to operate, reliable in locking and the like, and is an indispensable part in a modern railway signal system; meanwhile, due to the fact that electric driving is adopted, manual intervention is not needed in the using process, and working efficiency and safety are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit operation and maintenance equipment, in particular to an electric hook lock structure for turnout locking. Background Art

[0002] Turnouts can be divided into internal locking turnouts and external locking turnouts according to the locking method. Internal locking means that when the turnout is driven by the switch machine to a certain position, the locking device inside the switch machine locks the connecting rod connecting the turnout point rail (heart rail), thereby indirectly locking the turnout. External locking means that when the turnout is driven by the switch machine to a certain position, the locking device outside the switch machine directly locks the point rail and the base rail (heart rail and wing rail) together.

[0003] As a locking device, the hook lock is mainly used for locking the turnout in the field of rail transportation. For example, the Chinese patent document publication number CN115075064A provides a hook lock for a tramway turnout, which includes a close-fitting hook lock and a repelling hook lock for an integral point rail seat. The front end of the point rail seat is respectively formed with a rail-blocking side and a basic rail side on both sides of the rail opening; the close-fitting hook lock includes a first close-fitting abutment member abutting against the rail-blocking side, a second close-fitting abutment member abutting against the basic rail side, and a and a close-fitting tension adjustment screw connecting the first close-fitting abutment and the second close-fitting abutment. In the close-fitting state, the front end of the pointed rail is pressed against the base rail side through the second close-fitting abutment. The repulsive hook lock comprises a first repulsive abutment that abuts against the side of the blocking rail, a second repulsive abutment that abuts against the side of the base rail, and a repulsive tension adjustment screw connecting the first repulsive abutment and the second repulsive abutment. In the repulsive state, the front end of the pointed rail is pressed against the side of the blocking rail through the first repulsive abutment. The hook lock in the document has a simple structure, is easy to operate, and is easy to implement.

[0004] However, the current mainstream turnout hook locks are to manually attach the turnout to the point rail (movable heart rail) and fasten it to the base rail (wing rail), fixing the point rail in a certain position to lock the route. During subway operation, when the signal system fails and emergency measures are required to lock the turnout, the traditional turnout hook lock requires the staff to bring the hook lock to the site to manually install the hook lock, tighten the locking nut, and add an anti-dismantling lock. The whole process is cumbersome, the distance is long, and it takes a long time, which requires a high level of operator quality.

[0005] Considering the safety of operation and maintenance personnel, timely locking, and work efficiency, a hook lock that can be remotely powered needs to be developed and promoted. This will eliminate the need for manual installation at the track operation site during the operation and maintenance process, greatly improving work efficiency and safety. Summary of the invention

[0006] The utility model provides an electric hook lock structure for locking a turnout, which is used to solve the problems of personnel safety, locking timeliness and work efficiency in the prior art.

[0007] In order to solve the above-mentioned technical problems, the technical solution of the utility model is:

[0008] An electric hook lock structure for turnout locking, comprising a main frame, a motor, a reducer, a coupling, a locking block, a connecting rail and a lock hook;

[0009] The main frame is penetrated along its axial direction, and the left and right side walls of the main frame are symmetrically hollowed out with guide limit grooves along the axial direction, and the main frame is slidably connected with the connecting rail;

[0010] A coupling is connected between the output end of the motor and the reducer, the output end housing of the reducer is fixedly connected to one end of the main frame, the output shaft of the reducer is connected to a transmission screw, a screw nut is installed on the transmission screw, convex strips are provided on the left and right sides of the screw nut, the convex strips are limited and slid in the guide limit grooves on the corresponding sides, and the screw nut is fixedly connected to the end of the connecting rail away from the turnout;

[0011] The locking hook is fixedly connected to one end of the connecting rail facing the turnout, and the locking block is fixedly connected to the end face of the main frame facing the locking hook; under the output drive of the reducer, the transmission screw rotates so that the locking block moves toward the locking hook along the guide limit groove, and simultaneously pushes the connecting rail away from the turnout, and the distance between the locking hook and the locking block is reduced, so that the basic rail and the point rail are pressed together.

[0012] Furthermore, it also includes a ratchet, which is located at the end of the main frame and is passed through the axis of the transmission screw. The ratchet is relatively fixed to the transmission screw. The ratchet is correspondingly provided with a non-return pawl, and a release component is provided corresponding to the non-return pawl.

[0013] Furthermore, the release assembly includes an electromagnet and a release switch, wherein the release switch is connected to the non-return pawl, and when the electromagnet is powered on, it generates a magnetic attraction force on the release switch, thereby driving the non-return pawl to disengage from the tooth groove of the ratchet wheel.

[0014] Furthermore, when the lock hook is in a locked state, a locked switch is provided on the main frame corresponding to the end face position of the lead screw nut away from the lock hook; when the locking block and the lock hook are in a released state, a released switch is provided on the main frame corresponding to the end face position of the lead screw nut close to the lock hook; the control lines of the locked switch and the released switch are both connected to a junction box, the junction box is typically connected to a hook lock controller, and the hook lock controller is communicatively connected to a remote controller.

[0015] Furthermore, a pressure sensor is provided on the screw nut, and a pressure detection surface is provided on the main frame. During the locking process of the lock hook, the pressure applied to the pressure detection surface is detected by the pressure sensor to obtain the pressure between the lock hook and the locking block, and the circuit of the pressure sensor is also connected to the junction box.

[0016] Furthermore, the main frame is hollowed out at the top and bottom, and a protective cover is installed on the top surface of the main frame.

[0017] Furthermore, it also includes a mounting base, the main frame is mounted on one side of the mounting base, and the other side of the mounting base is sunken and used for mounting the motor and the reducer.

[0018] Furthermore, the mounting base is mounted on the roadbed by expansion bolts or chemical anchor bolts, and the main frame, motor and reducer are all floatingly connected to the mounting base.

[0019] Furthermore, the locking hook and the locking block are made of insulating material.

[0020] The electric hook lock proposed in this case is driven by electricity to achieve fast and accurate locking of the turnout. This solution is mainly used in railway signal systems to ensure the safety of trains during travel. When the control signal is received, the motor starts working and transmits power to the locking component through the reducer and coupling to lock or unlock the turnout. This solution has the advantages of simple structure, easy operation, and reliable locking. It is an indispensable part of the modern railway signal system. At the same time, since it is powered by electricity, no manual intervention is required during use, which greatly improves work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an electric hook lock in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] The electric hook lock structure for locking a turnout proposed in this patent is installed on the side of the turnout. The number and position of the electric hook lock structure correspond to the required traction point setting. It is used for locking various turnouts and movable core turnouts. It includes a main frame 4, a motor 3, a reducer 1, a coupling 16, a locking block 14, a connecting rail 15 and a locking hook 6 basic assembly. The locking block 14 and the locking hook 6 press the point rail and the base rail to achieve the locking of the turnout. The motor 3 is controlled by the nearest hook lock controller. The command input of the hook lock controller can be sent by a remote controller located remotely in the control center. The remote controller also receives data uploaded from the hook lock controller. The remote controller can also display the status of the electric hook lock. It can also manually input commands to the hook lock controller at a certain distance from the electric hook lock. In order to ensure that the control command can reliably act on the electric hook lock, a wired connection is preferred, especially the wireless communication method should be carefully selected between the electric hook lock and the hook lock controller.

[0025] like Figure 1 In the embodiment shown, the main frame 4 is penetrated along its axial direction, and the left and right side walls of the main frame 4 are symmetrically hollowed out with guide limit grooves 40 along the axial direction. The main frame 4 is slidably connected to the connecting rail 15, and the connecting rail 15 can be inserted into the lower part of the main frame 4 to leave space for installing other components.

[0026] A coupling 16 is connected between the output end of the motor 3 and the reducer 1, the output end outer shell of the reducer 1 is fixedly connected to one end of the main frame 4, the output shaft of the reducer 1 is connected to a transmission screw 8, a screw nut 7 is installed on the transmission screw 8, and convex strips 70 are provided on the left and right sides of the screw nut 7. The convex strips 70 are limitedly slid in the guide limiting groove 40 on the corresponding side, and the screw nut 7 is fixedly connected to the end of the connecting rail 15 away from the turnout.

[0027] The coupling 16, reducer 1, transmission screw 8 and screw nut 7 are the main parts of the driving force transmission of this scheme, which converts rotational motion into linear motion, and torque into thrust, driving the lock hook 6 to disengage from the pointed rail or press the pointed rail. The motor 3 of this scheme adopts a DC brushless motor 3 with Hall output, which is convenient for detecting the operating status and alarming when a fault occurs; the encoder of the motor 3 is used as the source of working status detection, and the outer shell of the motor 3 should have certain waterproof and dustproof properties. The reducer 1 preferably adopts a turbine reducer 1, which is convenient for use with various motors 3, continuously variable transmissions and other transmission products; at the same time, the worm wheel and worm have self-locking characteristics.

[0028] The locking hook 6 is fixedly connected to one end of the connecting rail 15 facing the turnout, and the locking block 14 is fixedly connected to the end face of the main frame 4 facing the locking hook 6; under the output drive of the reducer 1, the transmission screw 8 rotates so that the locking block 14 moves toward the locking hook 6 along the guide limit groove 40, and simultaneously pushes the connecting rail 15 away from the turnout, and the distance between the locking hook 6 and the locking block 14 is reduced, so that the basic rail and the point rail are pressed together.

[0029] The structure of this scheme also includes a ratchet, which is located at the end of the main frame 4 and is passed through the axis of the transmission screw 8. The ratchet is relatively fixed to the transmission screw 8, and a non-return pawl is correspondingly provided on the ratchet. After the ratchet is engaged with the non-return pawl, the ratchet can only rotate in one direction and cannot reverse. Therefore, in the locked state, when the power is off or there is no driving power input, mechanical self-locking can be achieved to avoid accidental release and opening of the hook lock. When the lock hook 6 is locked, the motor 3 or external force cannot open the hook lock, and the ratchet must be released before it can act. Therefore, a release component is provided corresponding to the non-return pawl.

[0030] The release assembly can be mechanical, requiring manual operation by the maintenance personnel. In the case of power failure, the hook lock can be loosened with a special wrench to complete the manual release. Preferably, the release assembly can be electrically controlled, including an electromagnet 5 and a release switch 12. The release switch 12 is connected to the non-return pawl. When the electromagnet 5 is powered on, it generates a magnetic attraction to the release switch 12, thereby driving the non-return pawl to disengage from the tooth groove of the ratchet.

[0031] In a preferred embodiment, a position detection of the screw nut 7 is also provided: a position detection switch is provided at a position corresponding to the opening and locking position of the hook lock; when the lock hook 6 is in a locked position, a locked position switch 10 is provided on the main frame 4 corresponding to the end face position of the screw nut 7 away from the lock hook 6; when the locking block 14 and the lock hook 6 are in a released position, a released position switch 11 is provided on the main frame 4 corresponding to the end face position of the screw nut 7 close to the lock hook 6. The detection switch uses an eddy current proximity switch, and the position of the detection switch can be fine-tuned. The control lines of the locked position switch 10 and the released position switch 11 are both connected to a junction box 2, and the junction box 2 is typically connected to a hook lock controller, and the hook lock controller is communicatively connected to a remote controller.

[0032] For the detection setting of the locking force, the extrusion pressure is an important reference data. The screw nut 7 is provided with a pressure sensor 13, and the main frame 4 is provided with a pressure detection surface. During the locking process of the lock hook 6, the pressure on the pressure detection surface is detected by the pressure sensor 13 to obtain the pressure between the lock hook 6 and the locking block 14. The line of the pressure sensor 13 is also connected to the junction box 2. According to TB / T3127-2005, the locking force is ≥20KN (2040kg), so the structural strength of the pressure detection surface considers sufficient redundancy to meet the design requirements.

[0033] The main frame 4 is hollowed out at the top and bottom, and a protective cover is installed on the top surface of the main frame 4 to improve the sealing performance. The transmission structure is sealed to prevent foreign objects from invading and causing jamming; when a fault occurs, the protective cover can be opened for easy maintenance.

[0034] The structure of this scheme also includes a mounting base 9, the main frame 4 is mounted on one side of the mounting base 9, and the other side of the mounting base 9 is sunken and used to mount the motor 3 and the reducer 1. The mounting base 9 is mounted on the roadbed by expansion bolts or chemical anchor bolts, and the main frame 4, the motor 3 and the reducer 1 are all floatingly connected to the mounting base 9. The floating connection can use an existing floating connector to resist vibration. All bolts of this electric hook lock are designed with anti-loosening measures.

[0035] When the rails are polished, there are sparks and oil stains, and a large current may flow through. Therefore, the place in contact with the rails needs to be insulated. The locking hook 6 and the locking block 14 are made of insulating materials.

[0036] In some embodiments, the installation space required for the electric hook lock is only 200mm*1440mm*80mm, and the reducer 1 part can be installed on the left or right side of the turnout according to the site conditions. After installing the electric hook lock and the hook lock controller in the correct position, debug to confirm whether the electric hook lock can be locked normally. If not, adjust the installation position of the locking detection iron sheet until it can be locked normally. After the locking function is normal, debug to confirm whether the electric hook lock can be released normally. If it cannot be released normally, adjust the position of the release detection iron sheet until it can be released normally.

[0037] Then, copy the device number on the hook lock controller and record its installation location information, find the corresponding device number in the remote controller and enter its corresponding device information.

[0038] When a locking command is issued, the hook lock controller controls the motor 3 to rotate forward, and the moving distance calculated by the encoder of the motor 3 is detected by the locking in place switch 10, and the action continues until the pressure value reaches 20KN, and then the motor 3 is turned off. When a release command is issued, the hook lock controller controls the ratchet to release, and then controls the motor 3 to reverse, and judges the moving distance calculated by the encoder of the motor 3. When it is detected that the release is in place and the pressure is less than 500N, it is determined that the release is successful.

[0039] The embodiment scheme on record can be modified to obtain a repulsion type electric hook lock, which will not be described in detail in this case.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An electric hook lock structure for turnout locking, characterized in that: It includes a main frame, a motor, a reducer, a coupling, a locking block, a connecting rail and a locking hook; The main frame is penetrated along its axial direction, and the left and right side walls of the main frame are symmetrically hollowed out with guide limit grooves along the axial direction, and the main frame is slidably connected with the connecting rail; A coupling is connected between the output end of the motor and the reducer, the output end housing of the reducer is fixedly connected to one end of the main frame, the output shaft of the reducer is connected to a transmission screw, a screw nut is installed on the transmission screw, convex strips are provided on the left and right sides of the screw nut, the convex strips are limited and slid in the guide limit grooves on the corresponding sides, and the screw nut is fixedly connected to the end of the connecting rail away from the turnout; The locking hook is fixedly connected to one end of the connecting rail facing the turnout, and the locking block is fixedly connected to the end face of the main frame facing the locking hook; under the output drive of the reducer, the transmission screw rotates so that the locking block moves toward the locking hook along the guide limit groove, and simultaneously pushes the connecting rail away from the turnout, and the distance between the locking hook and the locking block is reduced, so that the basic rail and the point rail are pressed together.

2. The electric hook lock structure for turnout locking according to claim 1 is characterized in that: It also includes a ratchet, which is located at the end of the main frame and is passed through the axis of the transmission screw. The ratchet is relatively fixed to the transmission screw. The ratchet is correspondingly provided with a non-return pawl, and a release component is correspondingly provided with the non-return pawl.

3. The electric hook lock structure for turnout locking according to claim 2 is characterized in that: The release assembly includes an electromagnet and a release switch, wherein the release switch is connected to the non-return pawl. When the electromagnet is powered on, a magnetic attraction is generated on the release switch, thereby driving the non-return pawl to disengage from the tooth groove of the ratchet wheel.

4. The electric hook lock structure for turnout locking according to claim 1, characterized in that: When the lock hook is in a locked state, a locked switch is provided on the main frame corresponding to the end face position of the lead screw nut away from the lock hook; when the locking block and the lock hook are in a released state, a released switch is provided on the main frame corresponding to the end face position of the lead screw nut close to the lock hook; the control lines of the locked switch and the released switch are both connected to a junction box, the junction box is typically connected to a hook lock controller, and the hook lock controller is communicatively connected to a remote controller.

5. The electric hook lock structure for turnout locking according to claim 4 is characterized in that: A pressure sensor is provided on the screw nut, and a pressure detection surface is provided on the main frame. During the locking process of the lock hook, the pressure between the lock hook and the locking block is obtained by detecting the pressure on the pressure detection surface through the pressure sensor, and the circuit of the pressure sensor is also connected to the junction box.

6. The electric hook lock structure for turnout locking according to claim 1, characterized in that: The main frame is hollowed out at the top and bottom, and a protective cover is installed on the top surface of the main frame.

7. The electric hook lock structure for turnout locking according to claim 1, characterized in that: It also includes a mounting base, the main body frame is mounted on one side of the mounting base, and the other side of the mounting base is sunken and used for mounting the motor and the reducer.

8. The electric hook lock structure for turnout locking according to claim 7, characterized in that: The installation base is installed on the roadbed through expansion bolts or chemical anchor bolts, and the main frame, motor and reducer are all floatingly connected to the installation base.

9. An electric hook lock structure for turnout locking according to any one of claims 1 to 8, characterized in that: The locking hook and the locking block are made of insulating material.

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