CN110219522B - Ground wire lock and unlocking key - Google Patents

Abstract

The invention provides a ground wire lock and an unlocking key. Wherein, the ground wire lock includes: the lock body is provided with a ground wire hole for inserting a ground wire head and an extension part for preventing the unlocking key from exiting the lock body; a movable member; unlocking the rotating shaft; the limiting piece is movably arranged in the lock body and is provided with a locking position and an unlocking position, when the unlocking rotating shaft rotates to the avoiding position, the limiting piece moves to the locking position, a first limiting part of the limiting piece stretches into the ground wire hole, and a second limiting part of the limiting piece moves to the rotating path of the unlocking rotating shaft so as to lock the unlocking rotating shaft, when the ground wire head stretches into the ground wire hole, the ground wire head extrudes the first limiting part and enables the limiting piece to be switched to the unlocking position, the first limiting part withdraws from the ground wire hole, and the second limiting part withdraws from the rotation of the unlocking rotating shaft, so that the unlocking rotating shaft can move to the stopping position. The invention solves the problem that the grounding lock in the prior art can not prevent overhauling personnel from performing idle running operation.

Description

Ground wire lock and unlocking key

Technical Field

The invention relates to the technical field of rail transit, in particular to a ground wire lock and an unlocking key.

Background

Currently, in the rail transit industry, when overhauling, an overhauling personnel must ground a high-voltage line in order to ensure personal safety of the overhauling personnel. In the five-prevention, the grounding process of the maintainer can be controlled by utilizing a grounding lock. Namely, after the maintainer needs to complete the disconnecting switch of the isolating switch, the computer key can unlock the grounding lock after receiving the disconnecting switch disconnecting instruction, and the maintainer can perform grounding wire at the moment. The lock can prevent misoperation of grounding of an maintainer under the condition that the disconnecting link is not disconnected. However, such locks have the disadvantage that the computer key can be directly pulled out after the computer key is unlocked, and the computer key can be operated in the next step. However, whether the ground wire head is connected to the ground wire pile or whether the ground wire head is connected and fastened with the ground wire pile is reliable or not can not be judged and controlled, so that an maintainer is likely to perform idle running operation (namely, after a computer key is unlocked, the ground wire head is not connected or locked, namely, a link of skipping the ground wire) to generate potential safety hazards.

Disclosure of Invention

The invention mainly aims to provide a ground wire lock and an unlocking key, which are used for solving the problem that a ground lock in the prior art cannot prevent overhauling personnel from performing idle running operation.

To achieve the above object, according to one aspect of the present invention, there is provided a ground wire lock comprising: the lock body is provided with a ground wire hole for inserting a ground wire head and an extension part for preventing the unlocking key from exiting the lock body; the movable piece is movably arranged in the lock body, at least one part of the movable piece can extend into the ground wire hole and prevent the ground wire head from extending into or exiting from the lock body; the unlocking rotating shaft is rotatably arranged in the lock body and is switched to an avoidance position of the avoidance moving piece from a stop position of the stop moving piece under the drive of an unlocking key; the limiting piece is movably arranged in the lock body and is provided with a locking position and an unlocking position, when the unlocking rotating shaft rotates to the avoiding position, the limiting piece moves to the locking position, a first limiting part of the limiting piece stretches into the ground wire hole, and a second limiting part of the limiting piece moves to the rotating path of the unlocking rotating shaft so as to lock the unlocking rotating shaft, when the ground wire head stretches into the ground wire hole, the ground wire head extrudes the first limiting part and enables the limiting piece to be switched to the unlocking position, the first limiting part withdraws from the ground wire hole, and the second limiting part withdraws from the rotation of the unlocking rotating shaft, so that the unlocking rotating shaft can move to the stopping position.

Further, the ground wire lock further comprises a first reset piece, two ends of the first reset piece are respectively in butt joint with the lock body and the movable piece, and reset force extending into the ground wire hole is provided for the movable piece.

Further, the ground wire lock further comprises a second reset piece, two ends of the second reset piece are respectively in butt joint with the lock body and the limiting piece, and reset force for the limiting piece to move to the locking position is provided.

Further, the ground wire lock further comprises a third reset piece, two ends of the third reset piece are respectively in butt joint with the lock body and the unlocking rotating shaft, and torsion force for rotating the unlocking rotating shaft to a stop position is provided.

Further, the unlocking rotating shaft is provided with a stop part, the stop part can move to a movement path of the movable piece, when the unlocking rotating shaft is located at the stop position, the stop part moves to the movement path of the movable piece and locks the movable piece at a position extending into the ground wire hole, and when the unlocking rotating shaft is located at the avoiding position, the stop part avoids the movement of the movable piece, and the movable piece can move freely.

Further, the unlocking rotating shaft is further provided with a protruding portion, the protruding portion is arranged on the circumferential surface of the unlocking rotating shaft, or the protruding portion is arranged on the end face of the unlocking rotating shaft and is eccentrically arranged with the unlocking rotating shaft, and when the limiting piece is located at the locking position, the second limiting portion is abutted with the protruding portion to prevent the unlocking rotating shaft from rotating.

Further, one end of the movable piece and/or the first limiting part extending into the ground wire hole is provided with a guide inclined plane, and when the ground wire head extends into the ground wire hole, the ground wire head extrudes the guide inclined plane so as to drive the movable piece and/or the first limiting part to withdraw from the ground wire hole.

Further, the ground wire lock further includes: a baffle; the fastener, the separation blade is located the one end that the moving part kept away from the ground wire hole to can dismantle with the moving part through the fastener and be connected, in order to control the moving part and stretch into the distance in the ground wire hole.

Further, the ground wire lock further includes: the magnetic steel component is movably arranged in the lock body, and at least one part of the magnetic steel component extends into the ground wire hole and can slide under the drive of the ground wire head; the wireless code chip is arranged in the lock body and can sense the position of the magnetic steel component so as to convey different code values according to the position of the magnetic steel component.

Further, the magnetic steel assembly includes: magnetic steel; the magnetic steel installation seat is provided with magnetic steel and drives the magnetic steel to synchronously move; the trigger rod is connected with the magnetic steel mounting seat, and at least one part of the trigger rod extends into the ground wire hole and can move under the extrusion of the ground wire head; and the two ends of the fourth reset piece are respectively abutted with the lock body and the trigger rod, and provide reset force extending into the ground wire hole for the trigger rod.

Further, the lock body is provided with an unlocking hole for inserting an unlocking key, the ground wire lock further comprises a dustproof component, and the dustproof component is movably connected with the lock body and can be covered at the unlocking hole to shield the unlocking hole.

Further, the ground wire lock further comprises a lock pile, wherein the lock pile is connected with the lock body and can be used for installing the ground wire lock on a track.

According to another aspect of the present invention, there is provided an unlocking key for unlocking the above ground wire lock, the unlocking key comprising: the first groove is axially formed along the unlocking key, and when the unlocking key is inserted into the lock body of the ground wire lock, the extending part of the lock body extends into the first groove; and when the unlocking key drives the unlocking rotating shaft of the ground wire lock to rotate, the extending part extends into the second groove, and the extending part is stopped by the inner wall of the second groove so as to prevent the unlocking key from exiting the lock body.

By the technical scheme, when the lock body is not unlocked by the unlocking key through the mutual matching and mutual limitation among the extension part, the movable part, the unlocking rotating shaft and the limiting part, the ground wire head cannot be inserted into or taken down from the ground wire lock, and when the ground wire head can be freely installed or taken down on the ground wire lock, the unlocking key cannot be taken down on the ground wire lock, so that the maintenance personnel is prevented from performing idle running operation. The specific process is as follows: when the ground wire lock is not unlocked, a part of the movable piece stretches into the ground wire hole, and the unlocking rotating shaft is positioned at the stop position, so that the unlocking rotating shaft blocks the movement of the movable piece, so that the part of the movable piece can not move in the ground wire hole, and the movable piece which cannot move blocks the movement of the ground wire head, so that the ground wire head cannot be mounted on the ground wire lock or removed from the ground wire lock at the moment; when the ground wire head is required to be mounted on or removed from the ground wire lock, the unlocking key is inserted into the ground wire lock, the unlocking key is rotated to drive the unlocking rotating shaft to move together, so that the unlocking rotating shaft moves from the stop position to the avoiding position, in the process, the unlocking key is blocked by the extending part to be pulled out of the ground wire lock and cannot be pulled out normally, the second limiting part of the limiting part moves to the rotating path of the unlocking rotating shaft, so that the unlocking rotating shaft and the unlocking key cannot be reversed, the unlocking key is locked on the ground wire lock, meanwhile, the first limiting part of the limiting part stretches into the ground wire hole, the ground wire lock is unlocked, then the ground wire head can be mounted on the ground wire lock, or pulled out of the ground wire lock, in the process, the ground wire head can squeeze the first limiting part, the first limiting part is pulled out of the ground wire hole, the whole limiting part is switched from the locking position to the unlocking position, the second limiting part is pulled out of the rotating path of the unlocking rotating shaft, the unlocking rotating shaft and the unlocking key can be rotated normally, namely, the unlocking key can be removed from the ground wire lock after the ground wire lock is mounted or removed, the unlocking key is reset, and the unlocking rotating shaft can be reset, and the moving part can be moved into the moving position again, and the moving shaft can be kept in the unlocking position. The arrangement mode can effectively prevent an maintainer from taking out the unlocking key to carry out next maintenance operation under the condition that the grounding wire head is not connected or the grounding wire head is not connected. After the mechanical mechanism is designed to force an maintainer to connect a grounding wire, the maintainer can take out an unlocking key to carry out next maintenance operation. Therefore, compared with the common grounding lock, the ground wire lock has the function of preventing idle operation, prevents misoperation, ensures the operation safety of maintenance personnel, simplifies the ground wire lock mechanism, has compact structure and small lock body, has better reliability, greatly reduces the production and manufacturing cost and the assembly complexity, and improves the reliability and the service life of the ground wire lock.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 shows a schematic view of the ground wire lock of the present invention mated with a ground wire head;

FIG. 2 shows an exploded view of FIG. 1;

FIG. 3 shows a schematic view of the ground lock of FIG. 1 mounted on a rail;

FIG. 4 is an exploded view of a portion of the structure of the ground lock of FIG. 1;

FIG. 5 is an exploded view of another part of the structure of the ground lock of FIG. 1;

FIG. 6 shows a schematic view of the ground lock of FIG. 1 when not unlocked;

fig. 7 shows an enlarged view at P in fig. 6;

fig. 8 shows a schematic view of the ground wire lock of fig. 1 in an unlocked configuration;

FIG. 9 shows an enlarged view at Q in FIG. 8;

fig. 10 is a schematic view showing a structure in which the ground wire head of the ground wire lock of fig. 1 can be inserted after unlocking;

FIG. 11 is a schematic view showing the structure of the ground wire lock in FIG. 1 in which the ground wire head can be pulled out after unlocking;

FIG. 12 is a schematic view showing the structure of the ground lock of FIG. 1 when the ground wire is pulled out;

FIG. 13 is a schematic view showing the structure of the ground lock concealed portion lock body in FIG. 12;

FIG. 14 shows a top view of FIG. 12; and

fig. 15 is a schematic diagram showing a structure of the ground lock of fig. 12 for unlocking the unlocking key after the ground wire lock is pulled out of the ground wire head.

Wherein the above figures include the following reference numerals:

10. a lock body; 11. a ground wire hole; 12. an extension; 20. a movable member; 30. unlocking the rotating shaft; 31. a stop portion; 32. a boss; 40. a limiting piece; 41. a first limit part; 42. a second limit part; 50. a first reset member; 60. a second reset member; 70. a third reset member; 80. a baffle; 90. a fastener; 101. magnetic steel; 102. a magnetic steel mounting seat; 103. a trigger lever; 104. a fourth reset member; 110. a wireless chip; 120. a dust-proof assembly; 130. locking piles; 140. a ground wire head; 150. unlocking the key; 151. a first groove; 152. and a second groove.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.

The invention provides a ground wire lock and an unlocking key, which aim to solve the problem that a ground lock in the prior art cannot prevent overhauling personnel from performing idle running operation.

As shown in fig. 1 to 15, a ground wire lock includes a lock body 10, a movable member 20, an unlocking rotation shaft 30, and a stopper 40, the lock body 10 having a ground wire hole 11 into which a ground wire head 140 is inserted and an extension 12 that blocks an unlocking key 150 from being withdrawn from the lock body 10, the extension 12 stopping the unlocking key 150 to block the unlocking key 150 from being withdrawn from the lock body 10 when the unlocking key 150 unlocks the ground wire lock; the movable piece 20 is movably arranged in the lock body 10, and at least one part of the movable piece 20 can extend into the ground wire hole 11 so as to lock the ground wire end 140 on the lock body 10 or prevent the ground wire end 140 from exiting the lock body 10; the unlocking rotary shaft 30 is rotatably arranged in the lock body 10 and is driven by the unlocking key 150 to be switched from a stop position of the stop movable piece 20 to a dodge position of the dodge movable piece 20; the limiting piece 40 is movably arranged in the lock body 10 and has a locking position and an unlocking position, when the unlocking rotating shaft 30 rotates to the avoiding position, the limiting piece 40 moves to the locking position, the first limiting portion 41 of the limiting piece 40 stretches into the ground wire hole 11, the second limiting portion 42 of the limiting piece 40 moves to the rotating path of the unlocking rotating shaft 30 to lock the unlocking rotating shaft 30 to the avoiding position, when the ground wire head 140 stretches into the ground wire hole 11, the ground wire head 140 presses the first limiting portion 41 and enables the limiting piece 40 to be switched to the unlocking position, the first limiting portion 41 withdraws from the ground wire hole 11, the second limiting portion 42 avoids the rotation of the unlocking rotating shaft 30, and the unlocking rotating shaft 30 can move to the stopping position.

In this embodiment, through the mutual cooperation and mutual limitation among the extension portion 12, the movable member 20, the unlocking rotation shaft 30 and the limiting member 40, when the unlocking key 150 does not unlock the lock body 10, the ground wire head 140 cannot be inserted into or removed from the ground wire lock, and when the ground wire head 140 can be freely mounted or removed from the ground wire lock, the unlocking key 150 cannot be removed from the ground wire lock, thereby preventing the overhauling personnel from performing idle running operation. The specific process is as follows: when the ground wire lock is not unlocked, a part of the movable member 20 extends into the ground wire hole 11, and because the unlocking rotating shaft 30 is located at the stop position, the unlocking rotating shaft 30 blocks the movement of the movable member 20, so that a part of the movable member 20 keeps the inside of the ground wire hole 11 immovable, and the movable member 20 which cannot move blocks the movement of the ground wire head 140, so that the ground wire head 140 cannot be mounted on the ground wire lock or the ground wire head 140 cannot be removed from the ground wire lock at this time, as shown in fig. 6 and 7; when the ground wire head 140 needs to be mounted on or removed from the ground wire lock, the unlocking key 150 is inserted into the ground wire lock, the unlocking key 150 is rotated, the unlocking key 150 drives the unlocking spindle 30 to move together, so that the unlocking spindle 30 moves from the stop position to the avoidance position, in the process, the movement of the unlocking key 150 to pull out the ground wire lock is blocked by the protruding part 12 and cannot be pulled out normally, thereby locking the unlocking key 150, as shown in fig. 10 and 11, the second limiting part 42 of the limiting part 40 moves onto the rotating path of the unlocking spindle 30, as shown in fig. 8 and 9, so that the unlocking spindle 30 and the unlocking key 150 cannot be reversed, thereby locking the unlocking key 150 on the ground wire lock, simultaneously the first limiting part 41 of the limiting part 40 stretches into the ground wire hole 11, the ground wire lock unlocking is completed, the ground wire head 140 may then be mounted to or removed from the ground wire lock, during which the ground wire head 140 may press the first limiting portion 41, as shown in fig. 12 and 13, such that the first limiting portion 41 exits the ground wire hole 11, the limiting member 40 is entirely switched from the locking position to the unlocking position, the second limiting portion 42 exits the rotational path of the unlocking shaft 30, the unlocking shaft 30 and the unlocking key 150 may be normally rotated, as shown in fig. 14 and 15, the unlocking key 150 may be removed from the ground wire lock after the ground wire head 140 is mounted or removed, the unlocking shaft 30 is reset after the unlocking key 150 is removed, the unlocking shaft 30 re-stops the movement of the movable member 20, the movable member 20 is maintained at the position extending into the ground wire hole 11, and the ground wire lock is restored to the state shown in fig. 6 and 7. The above arrangement can effectively prevent the maintainer from taking out the unlocking key 150 for the next maintenance operation when the grounding wire end 140 is not connected or the grounding wire end 140 is not connected. After the mechanical mechanism is designed to force the maintainer to connect the grounding wire, the unlocking key 150 can be taken out for the next maintenance operation. Therefore, compared with the common grounding lock, the ground wire lock has the function of preventing idle operation, prevents misoperation, ensures the operation safety of maintenance personnel, simplifies the ground wire lock mechanism, has compact structure and small lock body, has better reliability, greatly reduces the production and manufacturing cost and the assembly complexity, and improves the reliability and the service life of the ground wire lock.

As shown in fig. 5, the ground wire lock further includes a first reset element 50, and two ends of the first reset element 50 respectively abut against the lock body 10 and the movable element 20, and provide a reset force for the movable element 20 to extend into the ground wire hole 11. The first restoring member 50 is preferably a linear spring, and the first restoring member 50 is sleeved on the movable member 20, so that the movable member 20 always has a movement trend of extending into the ground wire hole 11, and thus the movable member 20 is driven to automatically restore when the ground wire head 140 does not press the movable member 20.

In this embodiment, the ground wire lock further includes a second reset element 60, where two ends of the second reset element 60 respectively abut against the lock body 10 and the limiting element 40, and provide a reset force for the limiting element 40 to move to the locking position. The second reset member 60 is similar to the first reset member 50, and is preferably a linear spring, and the second reset member 60 can make the limiting member 40 always have a movement trend of moving to the locking position, so that when the unlocking key 150 drives the unlocking rotating shaft 30 to rotate to the avoiding position, the limiting member 40 can automatically move to the locking position under the driving of the second reset member 60.

In this embodiment, the ground wire lock further includes a third reset member 70, two ends of the third reset member 70 respectively abut against the lock body 10 and the unlocking rotation shaft 30, and provide a torsion force for the unlocking rotation shaft 30 to rotate to the stop position. Since the unlocking shaft 30 rotates relative to the lock body 10, the third reset member 70 is preferably a torsion spring, and the torsion spring is sleeved on the third reset member 70, so that the unlocking shaft 30 always has a movement trend of rotating to the stop position, and the local thread end 140 presses the second limiting portion 42, so that when the limiting member 40 moves to the unlocking position, the third reset member 70 can drive the unlocking shaft 30 to automatically rotate reversely to the stop position.

It should be noted that, the ground wire lock of this embodiment needs to be used in cooperation with the corresponding ground wire head 140, as shown in fig. 13 and 14, the ground wire head 140 is provided with a concave portion into which the movable member 20 extends, and two sides of the concave portion are convex portions along the axial direction of the ground wire head 140, when the ground wire head 140 is mounted on the ground wire lock, the movable member 20 extends into the concave portion, and when the ground wire head 140 is inserted into or pulled out of the ground wire lock, the convex portions squeeze the movable member 20, so that the movable member 20 exits the ground wire hole 11.

The unlocking shaft 30 of the present embodiment has a stopper 31 extending in the radial direction, and the stopper 31 can move onto the movement path of the movable member 20 or away from the movement path of the movable member 20 in response to the rotation of the unlocking shaft 30, thereby controlling the movement of the movable member 20. When the unlocking rotating shaft 30 is located at the stopping position, the stopping part 31 moves to the movement path of the movable piece 20, the stopping part 31 prevents the movable piece 20 from exiting the ground wire hole 11, so that the movable piece 20 is locked at a position extending into the ground wire hole 11, and when the unlocking rotating shaft 30 is located at the avoiding position, the stopping part 31 avoids the movement of the movable piece 20, and the movable piece 20 can move freely.

As shown in fig. 7, the unlocking shaft 30 further has a protrusion 32, the protrusion 32 is disposed on an end surface of the unlocking shaft 30 and is eccentrically disposed with the unlocking shaft 30, when the unlocking shaft 30 is not rotated to the avoidance position, the protrusion 32 is always abutted against the protrusion 32 under the action of the second reset member 60, but does not affect the movement of the protrusion 32, when the unlocking shaft 30 is rotated to the avoidance position, the limiter 40 is moved to the locking position under the action of the second reset member 60, the protrusion 32 is dislocated with the second limiter 42, and the second limiter 42 extends into the movement path of the protrusion 32 and is abutted against the side surface of the protrusion 32, thereby blocking the reverse rotation of the unlocking shaft 30 and locking the unlocking shaft 30 to the avoidance position. Of course, the boss 32 may be provided on the circumferential surface of the unlocking rotation shaft 30 and protrude in the radial direction of the unlocking rotation shaft 30.

Optionally, an end of the movable member 20 and/or the first limiting portion 41 extending into the ground wire hole 11 has a guiding inclined plane, and when the ground wire head 140 extends into the ground wire hole 11, the ground wire head 140 presses the guiding inclined plane to drive the movable member 20 and/or the first limiting portion 41 to withdraw from the ground wire hole 11. The guiding slope allows the ground wire head 140 to more smoothly push the movable member 20 and the first limiting portion 41. Preferably, the movable member 20 and the portion of the first limiting portion 41 extending into the ground wire hole 11 are hemispherical, and the hemispherical cambered surface forms a guiding inclined plane, however, the hemispherical shape may be replaced by a conical shape or other shapes capable of forming an inclined plane.

In this embodiment, the ground wire lock further includes a blocking piece 80 and a fastening piece 90, where the blocking piece 80 is located at an end of the movable piece 20 far away from the ground wire hole 11, and is detachably connected to the movable piece 20 through the fastening piece 90, so as to control a distance that the movable piece 20 stretches into the ground wire hole 11. The baffle 80 is circular and is provided with a through hole, the maximum diameter of the baffle 80 is larger than the diameter of a mounting hole for mounting the movable piece 20 on the lock body 10, the fastener 90 is a screw, a threaded hole is formed in one end of the movable piece 20, which is away from the guiding inclined plane, during mounting, the movable piece 20 stretches into the mounting hole, then the baffle 80 is sleeved at one end of the movable piece 20, which is far away from the ground wire hole 11, and the baffle 80 is tightly connected with the movable piece 20 by the screw. The above-mentioned setting mode can be convenient for the installation of moving part 20, and separation blade 80 can also restrict moving part 20 and stretch into the distance in ground wire hole 11 simultaneously, avoids moving part 20 to stretch into the too big problem that leads to the inefficacy of distance in ground wire hole 11 under the effect of first restoring member 50.

As shown in fig. 5, the ground wire lock further includes a magnetic steel component and a wireless chip 110, where the magnetic steel component is movably disposed in the lock body 10, and at least a portion of the magnetic steel component extends into the ground wire hole 11 and can slide under the drive of the ground wire head 140; the wireless code chip 110 is arranged in the lock body 10 and can sense the position of the magnetic steel assembly so as to convey different code values according to the position of the magnetic steel assembly, and the computer judges the state of the ground wire lock at the moment according to the code value conveyed by the wireless code chip 110, so that the control of the ground wire lock is realized.

Specifically, the magnetic steel assembly comprises a magnetic steel 101, a magnetic steel mounting seat 102, a trigger rod 103 and a fourth reset piece 104, wherein the magnetic steel 101 is mounted on the magnetic steel mounting seat 102 and drives the magnetic steel 101 to synchronously move; the trigger rod 103 is connected with the magnetic steel mounting seat 102 through a fastening screw, at least one part of the trigger rod 103 extends into the ground wire hole 11 from the bottom of the ground wire hole 11, when the local wire head 140 extends into the ground wire hole 11, the ground wire head 140 extrudes the trigger rod 103, so that the trigger rod 103 drives the magnetic steel 101 to slide through the magnetic steel mounting seat 102, the wireless code chip 110 senses the position of the magnetic steel 101 to change, and the output code value is changed; the fourth reset element 104 is preferably a linear spring, the fourth reset element 104 is sleeved on the trigger lever 103, and two ends of the fourth reset element are respectively abutted against the lock body 10 and the trigger lever 103, so that when the ground wire head 140 is pulled out of the ground wire hole 11, the trigger lever 103 is driven to extend into the ground wire hole 11, the trigger lever 103 drives the magnetic steel 101 to move to an initial position, the position of the wireless code chip 110 sensing the magnetic steel 101 is changed, and the code value originally output is recovered.

As shown in fig. 4, the lock body 10 has an unlocking hole into which the unlocking key 150 is inserted, and the ground wire lock further includes a dust-proof component 120, where the dust-proof component 120 is movably connected with the lock body 10 and can be covered at the unlocking hole to block the unlocking hole.

Specifically, the dustproof assembly 120 includes a dustproof cover, a rotating pin and an elastic sheet, wherein the dustproof cover is pivotally connected with the lock body 10 through the rotating pin, the elastic sheet is also sleeved on the rotating pin, and two sides of the elastic sheet are respectively abutted against the lock body 10 and the dustproof cover, and the dustproof cover can be automatically opened or closed due to a certain elastic force of the elastic sheet, so that the reliability and the service life of the ground wire lock are improved due to the arrangement of the dustproof assembly 120.

Optionally, the lock body 10 includes, in addition to the lock body formed by the above components, a housing surrounding the components and a base body matched with a part of the components, where the lock body is matched with the ground wire head 140, and most of the components of the ground wire lock are disposed in the housing, so as to protect the components, and the housing is preferably disposed separately, so as to facilitate the installation of the components therein, and the base body may be used to install part of the components, for example, one base body is provided for installing the wireless chip 110, another base body is provided for installing the second reset member 60, so as to facilitate the assembly of the ground wire lock.

As shown in fig. 1 to 3, the ground lock further includes a lock post 130, and the lock post 130 is connected to the lock body 10 and is capable of mounting the ground lock on a rail. The installation mode of the lock pile 130 can be set according to the requirement, for example, the lock pile 130 can be adsorbed on the rail in a magnetic attraction mode, or bolt holes can be formed in the lock pile 130, and the ground wire lock is installed on the rail through bolts.

The embodiment further provides an unlocking key 150, which is configured to cooperate with the above ground wire lock, the unlocking key 150 includes, in addition to an unlocking structure that cooperates with the unlocking spindle 30, a first groove 151 that is axially opened along the unlocking key 150 and a second groove 152 that is circumferentially opened along the unlocking key 150, when the unlocking key 150 is axially inserted into the lock body 10 of the ground wire lock, the protruding portion 12 of the lock body 10 extends into the first groove 151 and moves along the length direction of the first groove 151 until the unlocking key 150 is in contact with the unlocking spindle 30, when the unlocking key 150 drives the unlocking spindle 30 of the ground wire lock to rotate, the protruding portion 12 enters into the second groove 152 from the first groove 151, and because the second groove 152 is circumferentially opened, the inner wall of the second groove 152 stops the protruding portion 12, and the unlocking key 150 cannot be pulled out of the lock body 10 without reversing the unlocking key 150, and at this time, the reversing of the unlocking key 150 is limited by the limiting member 40, so as to limit the unlocking key 150 from pulling out of the ground wire lock, thereby achieving the purpose of locking the unlocking key 150 on the ground wire lock. The present embodiment preferably forms the first groove 151 and the second groove 152 in an L shape.

It should be noted that, in the above embodiments, a plurality refers to at least two.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

1. the problem that the grounding lock in the prior art cannot prevent overhauling personnel from performing idle running operation is solved;

2. the device has the function of preventing idle operation, prevents misoperation, and ensures the operation safety of maintenance personnel;

3. the ground wire lock mechanism is simple, the structure is compact, the lock body is small and exquisite, the reliability is better, and the production and manufacturing cost and the assembly complexity are greatly reduced;

4. the reliability and the service life of the ground wire lock are improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A ground wire lock, comprising:

a lock body (10), wherein the lock body (10) is provided with a ground wire hole (11) for inserting a ground wire head (140) and an extension part (12) for preventing an unlocking key (150) from exiting the lock body (10);

the movable piece (20) is movably arranged in the lock body (10), and at least one part of the movable piece (20) can extend into the ground wire hole (11) and prevent the ground wire head (140) from extending into or exiting from the lock body (10);

the unlocking rotating shaft (30) is rotatably arranged in the lock body (10), and is driven by the unlocking key (150) to switch from a stop position for stopping the movable piece (20) to an avoidance position for avoiding the movable piece (20);

the limiting piece (40), limiting piece (40) activity sets up in lock body (10) to have locking position and unblock position, works as unblock pivot (30) rotate to dodge the position time, limiting piece (40) motion extremely locking position, first spacing portion (41) of limiting piece (40) stretch into in ground wire hole (11), and second spacing portion (42) of limiting piece (40) motion extremely on the rotation path of unblock pivot (30), in order to lock unblock pivot (30), works as ground wire head (140) stretch into when ground wire hole (11), ground wire head (140) extrusion first spacing portion (41) and make limiting piece (40) switch to unblock position, first spacing portion (41) withdraw from ground wire hole (11), and second spacing portion (42) unblock pivot (30) rotation, unblock pivot (30) can move to stop position.

2. The ground wire lock according to claim 1, further comprising a first return member (50), wherein both ends of the first return member (50) are respectively abutted against the lock body (10) and the movable member (20), and provide a return force to the movable member (20) extending into the ground wire hole (11).

3. The ground wire lock of claim 1, further comprising a second return member (60), wherein both ends of the second return member (60) abut the lock body (10) and the stopper (40), respectively, and provide a return force to the stopper (40) for movement to the locking position.

4. The ground wire lock according to claim 1, further comprising a third reset member (70), wherein both ends of the third reset member (70) are respectively abutted against the lock body (10) and the unlocking rotation shaft (30), and provide a torsion force for the unlocking rotation shaft (30) to rotate to the stop position.

5. The ground wire lock according to claim 1, characterized in that the unlocking spindle (30) has a stop (31), the stop (31) being movable onto the movement path of the movable element (20) when the unlocking spindle (30) is in the stop position and locking the movable element (20) in a position protruding into the ground wire hole (11), the stop (31) being free to move when the unlocking spindle (30) is in the evasive position, the movable element (20) being free to move.

6. The ground wire lock according to claim 1, characterized in that the unlocking spindle (30) further has a protruding portion (32), the protruding portion (32) is disposed on a circumferential surface of the unlocking spindle (30), or disposed on an end surface of the unlocking spindle (30) and eccentrically disposed with the unlocking spindle (30), and when the stopper (40) is located at the locking position, the second stopper (42) abuts against the protruding portion (32) to hinder the unlocking spindle (30) from rotating.

7. The ground wire lock according to claim 1, characterized in that one end of the movable member (20) and/or the first limiting part (41) extending into the ground wire hole (11) is provided with a guiding inclined plane, and when the ground wire head (140) extends into the ground wire hole (11), the ground wire head (140) presses the guiding inclined plane to drive the movable member (20) and/or the first limiting part (41) to withdraw from the ground wire hole (11).

8. The ground wire lock of claim 1, further comprising:

a baffle (80);

the retainer sheet (80) is located at one end of the movable piece (20) far away from the ground wire hole (11), and is detachably connected with the movable piece (20) through the retainer sheet (90), so that the distance that the movable piece (20) stretches into the ground wire hole (11) is controlled.

9. The ground wire lock of claim 1, further comprising:

the magnetic steel component is movably arranged in the lock body (10), and at least one part of the magnetic steel component extends into the ground wire hole (11) and can slide under the drive of the ground wire head (140);

the wireless code chip (110) is arranged in the lock body (10) and can sense the position of the magnetic steel component so as to convey different code values according to the position of the magnetic steel component.

10. The ground wire lock of claim 9, wherein the magnetic steel assembly comprises:

a magnetic steel (101);

the magnetic steel mounting seat (102), wherein the magnetic steel (101) is mounted on the magnetic steel mounting seat (102) and drives the magnetic steel (101) to synchronously move;

the trigger rod (103) is connected with the magnetic steel mounting seat (102), and at least one part of the trigger rod (103) stretches into the ground wire hole (11) and can move under the extrusion of the ground wire head (140);

and the two ends of the fourth reset piece (104) are respectively abutted with the lock body (10) and the trigger rod (103) and provide reset force for the trigger rod (103) to extend into the ground wire hole (11).

11. The ground wire lock according to claim 1, characterized in that the lock body (10) has an unlocking hole into which the unlocking key (150) is inserted, the ground wire lock further comprises a dust-proof assembly (120), and the dust-proof assembly (120) is movably connected with the lock body (10) and can be covered at the unlocking hole to shield the unlocking hole.

12. The ground wire lock of claim 1, further comprising a lock post (130), said lock post (130) being connected to said lock body (10) and being capable of mounting said ground wire lock on a track.

13. An unlocking key for unlocking a ground wire lock according to any one of claims 1 to 12, the unlocking key (150) comprising:

a first groove (151) is formed along the axial direction of the unlocking key (150), and when the unlocking key (150) is inserted into the lock body (10) of the ground wire lock, the protruding part (12) of the lock body (10) protrudes into the first groove (151);

and a second groove (152) formed along the circumferential direction of the unlocking key (150), wherein when the unlocking key (150) drives the unlocking rotating shaft (30) of the ground wire lock to rotate, the protruding part (12) stretches into the second groove (152), and the inner wall of the second groove (152) stops the protruding part (12) so as to prevent the unlocking key (150) from withdrawing out of the lock body (10).