Intelligent grounding device and method for electrified railway overhead line system

Abstract

The invention discloses an intelligent grounding device and method for an electrified railway catenary, the intelligent grounding device comprises a grounding hook capable of being hung on the catenary and a grounding clamp capable of being detachably unlocked and locked on a steel rail, the grounding hook and the grounding clamp share one locking piece, and when the grounding clamp is clamped on the steel rail, the locking piece is locked on the grounding clamp. A grounding signal of the grounding end is triggered, and limiting on the locking piece is relieved, so that the locking piece is in a pull-out state; after the locking piece is pulled out, the grounding clamp is locked on the steel rail; when the grounding clamp is pulled out by the locking piece, the grounding hook is hung on the contact network, and the grounding hook triggers a grounding signal of a line end, so that a forced grounding operation sequence is realized. According to the technical scheme, the operation process of hanging the grounding wire is forcibly standardized, manual operation steps are reduced to eliminate risks caused by manual operation, and the safety and efficiency of electrified railway maintenance operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrified railway safety equipment, and in particular to an intelligent grounding device and method for an electrified railway contact network. Background Art

[0002] With the rapid development of electrified railways, maintenance work along these lines is increasing. Therefore, improving operational safety and efficiency along these lines is crucial. During electrified railway construction and maintenance, to ensure the safety of workers and equipment, rails must be reliably grounded after the catenary is de-energized to prevent potential safety hazards caused by residual voltage and lightning induction. Existing grounding clamps often utilize a single, manual, mechanical structure. The manual operation of attaching the ground wire is cumbersome and carries the risk of accidental attachment or removal. Summary of the Invention

[0003] The present invention provides an intelligent grounding device and method for an electrified railway contact network, which can be beneficial to enforcing and standardizing the operating procedures for hanging ground wires, reducing manual operation steps to eliminate the risks brought by human operation, and preventing the situation where the ground wire is hung before the grounding end is grounded. At the same time, it can also avoid the situation where the grounding end is removed before the hanging ground wire is removed, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0004] In a first aspect, an embodiment of the present invention provides an intelligent grounding device for an electrified railway contact network, comprising a grounding hook that can be hooked on the contact network and a grounding clip that can be detachably unlocked from the rail. The grounding hook and the grounding clip share a locking piece. When the grounding clip is clamped on the rail, a grounding signal at the grounding end is triggered, and the limit on the locking piece is released, so that the locking piece is in a removable state. After the locking piece is pulled out, the grounding clip is locked to the rail. The locking piece pulls out the grounding clip, the grounding hook is hooked on the contact network, and the grounding hook triggers the grounding signal at the line end to achieve a mandatory grounding operation sequence.

[0005] The technical solution of the present invention adopts the method of using a common locking piece for the grounding hook and the grounding clamp. When the grounding clamp is clamped on the rail, it can trigger the grounding signal of the grounding end and release the limit of the grounding clamp on the locking piece, so that the locking piece can be pulled out of the grounding clamp; after the locking piece is pulled out of the grounding clamp, the grounding clamp is locked to the rail; after the locking piece pulls out the grounding clamp, the grounding hook can be hooked on the contact network, and the grounding hook triggers the grounding signal at the line end. By using a common locking piece for the grounding hook and the grounding clamp, it is conducive to enforcing and standardizing the operation process of hanging the ground wire, reducing manual operation steps to eliminate the risks brought by human operation, and preventing the situation where the ground wire is hung without grounding the ground end. At the same time, it can also avoid the situation where the grounding end is removed when the hanging ground wire is not removed, which is conducive to improving the safety and efficiency of electrified railway maintenance operations.

[0006] According to the aforementioned embodiments of the first aspect of the present invention, the grounding clip is connected to the grounding hook via a first wire, and the locking member is connected to the grounding hook via a second wire. The length of the second wire is shorter than the length of the first wire, so that the grounding hook's hooking operation is restricted by the position of the locking member. When the grounding clip is not clamped to the rail, the locking member is confined within the grounding clip and cannot be removed, preventing the grounding hook from hooking onto the contact network. When the grounding hook is not separated from the contact network, the locking member cannot be inserted back into the grounding clip due to the length of the second wire, and the locking member cannot release the grounding clip from the rail, preventing the grounding clip from being removed from the rail. By setting the length of the second wire shorter than the length of the first wire, the technical solution of the present invention ensures that when the grounding clip is not clamped to the rail, the locking member is located within the grounding clip and cannot be removed, and the grounding hook cannot be hooked onto the contact network due to the length of the second wire. When the grounding hook is not removed from the contact network, the locking member is confined by the second wire and can only be located outside the grounding clip and cannot be inserted back into the grounding clip, preventing the locking member from releasing the grounding clip and removing it from the rail. Only after the grounding hook of the contact network is removed can the locking part be inserted back into the grounding clip to unlock the grounding clip. This can help to enforce the standardization of the operating procedures for hanging the grounding wire, reduce manual operation steps and eliminate the risks brought by human operation.

[0007] According to the aforementioned embodiment of the first aspect of the present invention, the intelligent grounding device further includes a grounding rod. The grounding clip includes a clip module and an intelligent detection module. The clip module is movably mounted on one side of the grounding rod. The clip module includes a body and a first locking portion and a second locking portion, which are transmission-connected to a locking member. The first locking portion can unlock the locking member, and the second locking portion can unlock the connection between the grounding clip and the rail. When the grounding clip is locked to the rail, at least a portion of the first locking portion is pressed into the body by the rail, allowing the locking member to be removed from the body and driving the second locking portion to abut the grounding rod, securing the grounding clip to the rail and enabling the grounding hook to be hooked to the contact network. When the grounding hook is separated from the contact network, the locking member can be inserted back into the body, lifting at least a portion of the second locking portion and separating it from the grounding rod, thereby driving at least a portion of the first locking portion to withdraw from the body, unlocking the connection between the grounding clip and the rail. At least part of the structure of the intelligent detection module is arranged on the first locking part, which is used to detect whether the grounding clip is effectively grounded. At least part of the structure of the first locking part can trigger at least part of the structure of the intelligent detection module to detect the grounding state of the grounding clip. The technical solution of the present invention is to provide a clamping module, which includes a main body and a first locking part and a second locking part that are transmission-connected to the locking member. The locking member is pluggable in the main body. When the grounding clamp is engaged with the rail, at least a portion of the structure of the first locking part is squeezed by the rail and moved into the main body, thereby releasing the limit on the locking member, allowing the locking member to be pulled out of the main body, and driving the second locking part to abut against the grounding rod to limit the movement of the grounding rod, thereby preventing the clamping module from moving on the grounding rod, thereby limiting the grounding clamp to the rail and preventing the grounding clamp from detaching from the rail. It can ensure that when the grounding clamp is not clamped to the rail, the grounding hook cannot be hooked on the contact network, and when the grounding hook of the contact network is not removed, the grounding clamp cannot be removed from the rail. It can be conducive to enforcing and standardizing the operation process of hanging the ground wire, reducing manual operation steps to eliminate the risks brought by human operation, preventing the ground wire from being hung without grounding the grounding end, and also preventing the grounding end from being removed without removing the hung ground wire. By setting up an intelligent detection module, it is helpful to ensure the effective grounding of the grounding clamp and detect the grounding status, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0008] According to the aforementioned embodiment of the first aspect of the present invention, the first locking portion includes a first transmission pin and a first limit block connected to each other, which are used to abut against the locking member and limit the movement of the locking member. The second locking portion includes a second limit block and a second transmission pin connected to each other. When the locking member is separated from the second locking portion, the second locking portion can abut against the grounding rod to limit the movement of the grounding rod. When the grounding clamp is engaged with the rail, the first transmission pin is squeezed by the rail and moves into the body. The first transmission pin drives the first limit block to move so that the first limit block is separated from the locking member, thereby releasing the restriction on the locking member, allowing the locking member to be pulled out of the body and separated from the second limit block, releasing the restriction on the second limit block, and the second limit block drives the second transmission pin to move in the body and abut against the grounding rod to limit the movement of the grounding rod, thereby limiting the grounding clamp to the rail. In the technical solution of the present invention, the first transmission pin can drive the first limit block to move, thereby locking or unlocking the locking member, allowing the locking member to be located within or removed from the body. When the grounding clamp is not clamped to the rail, the locking member is located within the body and cannot be removed, and the grounding hook cannot be hooked onto the contact network. When the grounding hook of the contact network is not removed, the locking member is located outside the body and cannot be inserted back into the body. Both the first locking portion and the second locking portion remain locked, and the grounding clamp cannot be removed from the rail. This can help to enforce and standardize the operating procedures for hooking the ground wire, reduce manual operation steps to eliminate the risks brought by human operation, and help improve the safety of electrified railway maintenance operations.

[0009] According to the aforementioned embodiment of the first aspect of the present invention, the main body includes a clamping portion for clamping the rail, and the first transmission pin can extend or retract into the clamping portion, and drive the first limit block to move within the main body to abut or separate from the locking member. When the grounding clamp is not engaged with the rail, the first transmission pin protrudes from the main body, and the first limit block abuts against the locking member to limit the movement of the locking member, and the locking member is in a non-removable state. The first locking portion also includes a first elastic member, which is sleeved on the outside of the first transmission pin and provides an elastic reset force for the movement of the first transmission pin.

[0010] According to the aforementioned embodiment of the first aspect of the present invention, a locking groove is provided on the outer periphery of the locking member, and the first limiting block includes a first connecting portion and a limiting portion. The first connecting portion is connected to the first transmission pin, and the limiting portion is located in the locking groove to limit the removal of the locking member from the body. The limiting portion is separated from the locking groove to release the restriction on the locking member within the body. In the technical solution of the present invention, the first limiting block can lock or unlock the locking member, allowing the locking member to be located within or removed from the body, thereby making the grounding clip detachable from the rail. This is conducive to enforcing and standardizing the operating procedures for hanging ground wires, reducing manual operation steps to eliminate the risks brought about by human operation, and is conducive to improving the safety of electrified railway maintenance operations.

[0011] According to the aforementioned embodiment of the first aspect of the present invention, the grounding clamp further includes a drive shaft and a fastener, the drive shaft is coaxially connected to the grounding rod, the fastener is cooperatively connected to the drive shaft, and rotating the fastener can drive the drive shaft to move, thereby driving the clamp module to move on the grounding rod, so that the grounding clamp can clamp the rail.

[0012] According to the aforementioned embodiment of the first aspect of the present invention, the locking member abuts against or separates from the second limit block to limit or drive the second limit block to move, thereby driving the second transmission pin to move within the body. The second locking portion also includes: a second elastic member, the second elastic member is sleeved on the outside of the second transmission pin, and provides an elastic reset force for the second transmission pin. When the grounding clamp is not engaged with the rail, the locking member is inserted into the body and abuts against the second limit block to limit the movement of the second limit block; when the grounding clamp is engaged with the rail, the locking member can be pulled out of the body and separated from the second limit block to release the limit on the second limit block. The second limit block moves under the elastic action of the second elastic member and drives the second transmission pin to move, so that the second transmission pin abuts against the drive shaft to limit the rotation of the drive shaft. In the technical solution of the present invention, when the locking member is pulled out of the body, it can drive the second limit block to move, thereby driving the second locking part to move and abut against the drive shaft to limit the movement of the grounding rod, preventing the clamping module from moving on the grounding rod, thereby limiting the grounding clamp to the rail and preventing the grounding clamp from detaching from the rail. It can ensure that when the grounding clamp is not clamped to the rail, the grounding hook cannot be hooked on the contact network, and when the grounding hook of the contact network is not removed, the grounding clamp cannot be removed from the rail. It can help to enforce and standardize the operating procedures for hanging ground wires, reduce manual operation steps, and eliminate the risks brought by human operation.

[0013] According to the aforementioned embodiment of the first aspect of the present invention, a plurality of limiting tooth grooves are provided around the outer circumference of the drive shaft, and a second connecting portion is provided on the side of the second transmission pin close to the drive shaft. The outer peripheral shape of the second connecting portion is matched with the inner wall shape of any limiting tooth groove, and the second connecting portion can be matched with any limiting tooth groove to limit the rotation of the drive shaft.

[0014] According to the aforementioned embodiment of the first aspect of the present invention, the intelligent detection module includes a first detection unit and a second detection unit. The first detection unit includes a metal detection part and an insulating part, which are used to detect whether the grounding clamp is effectively grounded. The detection part is embedded in the first transmission pin near one end of the rail, and the insulating part is provided on the periphery of the detection part. The second detection unit includes a detection pin and an induction component, which are used to detect the grounding state of the grounding clamp; the detection pin is connected to the first limit block in a transmission manner. The technical solution of the present invention is to set up a first detection unit and a second detection unit. The first detection unit can detect whether the grounding clamp is effectively grounded. The detection pin is connected to the first limit block in a transmission manner and can trigger the second detection unit to detect the grounding state of the grounding clamp, which is beneficial to ensure the effective grounding of the grounding clamp and detect the grounding state, and is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0015] According to the aforementioned embodiments of the first aspect of the present invention, the detection unit is electrically connected to the interior of the intelligent detection module via a first conductive wire. A second conductive wire is also provided within the body and electrically connected to the interior of the intelligent detection module. The intelligent detection module determines whether the rail meets the preset insulation and rust-stripping conditions by detecting the resistance between the first and second conductive wires. The technical solution of the present invention, by providing the first and second conductive wires, allows the intelligent detection module to determine whether the rail meets the preset insulation and rust-stripping conditions by detecting the resistance between the first and second conductive wires, thereby detecting whether the grounding clamp is effectively grounded, thereby improving the safety and efficiency of electrified railway maintenance operations.

[0016] According to the aforementioned embodiment of the first aspect of the present invention, the sensing component includes: a micro switch and a trigger member, the trigger member includes a first end and a second end arranged opposite to each other, the first end can trigger the micro switch, and the second end is arranged to contact the detection pin; wherein, when the grounding clamp is not engaged with the rail, the first transmission pin protrudes from the clamping portion, and the first end does not trigger the micro switch; when the grounding clamp is engaged with the rail, the first transmission pin is squeezed by the rail and moves, and drives the first limit block to push the detection pin to displace, and the detection pin drives the second end to move, thereby driving the first end to trigger the micro switch to generate a grounding state signal. The technical solution of the present invention is to provide a micro switch and a trigger member, when the grounding clamp is not engaged with the rail, the first end does not trigger the micro switch; when the grounding clamp is engaged with the rail, the first transmission pin is squeezed by the rail and moves, and drives the detection pin to displace, and the detection pin drives the second end to move, thereby driving the first end to trigger the micro switch to generate a grounding state signal, thereby detecting the grounding state of the grounding clamp, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0017] According to the aforementioned embodiment of the first aspect of the present invention, the second detection unit also includes: a third elastic member, which is sleeved on the outside of the detection pin, and when the grounding clamp is not engaged with the rail, the detection pin extends toward the side where the trigger member is located under the elastic action of the third elastic member; and a limit pin, which is arranged in the main body, and the limit pin is located on the side of the detection pin close to the trigger member, and the limit pin can limit the extension length of the detection pin.

[0018] In a second aspect, an embodiment of the present invention provides a grounding method for an electrified railway contact network, and the grounding method is performed by an intelligent grounding device according to any of the aforementioned embodiments of the first aspect of the present invention. The grounding method includes: clamping the grounding clamp to the rail in place, at least part of the structure of the grounding clamp is squeezed by the rail to release the limit on the locking piece, so that the locking piece is in a pull-out state; pulling out the locking piece from the grounding clamp, limiting the grounding clamp to the rail, the hooking operation of the grounding hook is limited by the position of the locking piece, when the locking piece is in the pulled-out unlocked state, the grounding hook can perform the operation of hooking the contact network; inserting the locking piece into the grounding hook, and hooking the grounding hook to the contact network, the grounding hook triggers the grounding signal at the line end, the locking piece cannot be inserted back into the grounding clamp due to the hooking state of the grounding hook, the locking piece cannot unlock the clamping of the grounding clamp and the rail, and the grounding clamp cannot be removed from the rail, so as to realize a mandatory grounding operation sequence; separating the grounding hook from the contact network, the locking piece can be inserted back into the grounding clamp due to the unhooked state of the grounding hook to unlock the clamping of the grounding clamp and the rail.

[0019] The technical solution of the present invention clamps the grounding clip to the rail in place, and at least part of the structure of the grounding clip is squeezed by the rail to release the limit on the locking piece, so that the locking piece is in a pull-out state; the locking piece is pulled out from the grounding clip to limit the grounding clip to the rail, and the hanging operation of the grounding hook is limited by the position of the locking piece. When the locking piece is in the pulled-out unlocked state, the grounding hook can perform the operation of hanging the contact network; the locking piece is inserted into the grounding hook, and the grounding hook is hung on the contact network. The grounding hook triggers the grounding signal at the line end. The locking piece cannot be inserted back into the grounding clip due to the hanging state of the grounding hook. The locking piece cannot unlock the clamping of the grounding clip and the rail, and the grounding clip cannot be removed from the rail, so as to realize a mandatory grounding operation sequence; the grounding hook is separated from the contact network. The locking piece can be inserted back into the grounding clip due to the unhooked state of the grounding hook to unlock the clamping of the grounding clip and the rail. By using the same locking part for the grounding hook and the grounding clip, it is helpful to enforce and standardize the operation process of hanging the ground wire, reduce manual operation steps to eliminate the risks brought by human operation, and prevent the situation where the ground wire is hung without grounding the ground end. At the same time, it can also avoid the situation where the ground end is removed before the ground wire is hung, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0020] According to the aforementioned embodiment of the second aspect of the present invention, the grounding method further includes: when the grounding clamp does not clamp the rail, the locking piece is locked in the grounding clamp and is in an unremovable state, and the grounding hook cannot be hooked to the contact network because the locking piece is in the unremovable state in the grounding clamp.

[0021] The technical solution of the present invention ensures that when the grounding hook and the grounding clamp share a locking piece, the locking piece is located in the body and cannot be pulled out, and the grounding hook cannot be hooked on the contact network when the grounding clamp is not clamped to the rail. When the grounding hook of the contact network is not removed, the grounding clamp cannot be removed from the rail. Only after the grounding hook of the contact network is removed can the locking piece be inserted back into the body, thereby unlocking the grounding clamp. This can help to enforce and standardize the operating procedures for hanging the ground wire, reduce manual operation steps to eliminate the risks brought by human operation, and prevent the situation where the grounding wire is hung without grounding the grounding end. It can also avoid the situation where the grounding end is removed without removing the hanging ground wire. The intelligent detection module can detect whether the grounding clamp is effectively grounded and the grounding status, which is conducive to improving the safety and efficiency of electrified railway maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an intelligent grounding device for an electrified railway contact network according to the present invention;

[0024] Figure 2 This is a schematic diagram of the operation process of the intelligent grounding device of the present invention;

[0025] Figure 3 This is a schematic cross-sectional structural diagram of a clamping module in an embodiment of an intelligent grounding device of the present invention;

[0026] Figure 4 This is a structural diagram of a locking member in an embodiment of the intelligent grounding device of the present invention;

[0027] Figure 5 This is a structural diagram of the first locking portion in an embodiment of the intelligent grounding device of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of an embodiment of the intelligent grounding device of the present invention when installed on a rail;

[0029] Figure 7This is a schematic cross-sectional view of the locking member of an embodiment of the intelligent grounding device of the present invention;

[0030] Figure 8 This is a schematic structural diagram of a drive shaft in an embodiment of an intelligent grounding device of the present invention;

[0031] Figure 9 This is a structural diagram of the second locking portion in an embodiment of the intelligent grounding device of the present invention;

[0032] Figure 10 This is a schematic structural diagram of a first conductor of an embodiment of an intelligent grounding device of the present invention;

[0033] Figure 11 This is a schematic structural diagram of the second conductor of an embodiment of the intelligent grounding device of the present invention;

[0034] Figure 12 This is a schematic diagram of the cover structure in one embodiment of the intelligent grounding device of the present invention;

[0035] Figure 13 A schematic diagram of an untriggered micro switch in an embodiment of the intelligent grounding device of the present invention;

[0036] Figure 14 A schematic diagram showing a first angle of triggering a micro switch in an embodiment of an intelligent grounding device of the present invention;

[0037] Figure 15 A second angle schematic diagram of triggering a micro switch in an embodiment of the intelligent grounding device of the present invention;

[0038] Figure 16 This is a schematic structural diagram of a detection pin in an embodiment of an intelligent grounding device of the present invention;

[0039] Figure 17 This is a schematic structural diagram of a triggering member in an embodiment of an intelligent grounding device of the present invention;

[0040] Figure 18 This is a schematic diagram of the installation of an intelligent detection module in an embodiment of an intelligent grounding device of the present invention;

[0041] Figure 19 This is a schematic diagram of a waterproof structure within an intelligent detection module of an embodiment of an intelligent grounding device of the present invention;

[0042] Figure 20 Schematic diagram of the process steps of an embodiment of the grounding method of the present invention.

[0043] Description of Figure Numbers:

[0044] Grounding clip - 100, rail - 200, grounding hook - 300, contact network - 400;

[0045] Grounding rod 110, clamping module 120, intelligent detection module 130, drive shaft 140, fastener 150, first wire 310, second wire 320, storage unit 330;

[0046] Main body 121, locking member 122, first locking portion 123, second locking portion 124, cover 125, wiring lug 126, detection portion 131, insulating member 132, first wire 133, second wire 134, micro switch 135, detection pin 136, trigger member 137, third elastic member 138, limit pin 139, limit tooth groove 141;

[0047] Clamping portion 1211, locking groove 1221, first transmission pin 1231, first limiting block 1232, first elastic member 1233, second limiting block 1241, second transmission pin 1242, second elastic member 1243, groove 1361, first end 1371, second end 1372;

[0048] First connecting portion 12321, limiting portion 12322, notch 12411, second connecting portion 12421;

[0049] Waterproof structure-S1, silicone pad-S2, threading hole-S3, hexagon socket screw-S4.

[0050] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] Electrified railway overhead lines typically carry high voltage, requiring grounding to eliminate the voltage during maintenance. Existing grounding techniques rely on manual installation of ground wires, which involves derusting the rails, manually securing grounding clips to the rails, and then attaching the ground wires to the overhead line. However, manual operation can easily lead to errors (such as attaching wires before grounding or releasing grounding clips before removing wires), potentially causing electric shock.

[0055] The present invention provides an intelligent grounding device and method for an electrified railway contact network, which can be beneficial to enforcing and standardizing the operating procedures for hanging ground wires, reducing manual operation steps to eliminate the risks brought by human operation, and preventing the situation where the ground wire is hung before the grounding end is grounded. At the same time, it can also avoid the situation where the grounding end is removed before the hanging ground wire is removed, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0056] like Figures 1 to 2 As shown, an embodiment of the present invention provides an intelligent grounding device for an electrified railway contact network, comprising a grounding hook 300 that can be hooked to the contact network 400 and a grounding clamp 100 that can be detachably unlocked from the rail 200. The grounding hook 300 and the grounding clamp 100 share a locking member 122. When the grounding clamp 100 is clamped to the rail 200, a grounding signal at the grounding end is triggered, and the limit on the locking member 122 is released, so that the locking member 122 is in a removable state; after the locking member 122 is pulled out, the grounding clamp 100 is locked to the rail 200; the locking member 122 pulls out the grounding clamp 100, and the grounding hook 300 is hooked to the contact network 400. The grounding hook 300 triggers the grounding signal at the line end to implement a mandatory grounding operation sequence.

[0057] The technical solution of the present invention adopts the method of using a common locking member 122 for the grounding hook 300 and the grounding clip 100. When the grounding clip 100 is clamped on the rail 200, the grounding signal of the grounding end can be triggered, and the limit of the grounding clip 100 on the locking member 122 is released, so that the locking member 122 can be pulled out of the grounding clip 100. After the locking member 122 is pulled out of the grounding clip 100, the grounding hook 300 is locked to the rail 200. After the locking member 122 is pulled out of the grounding clip 100, the grounding hook 300 is locked. 00 can be hung on the contact network 400, and the grounding hook 300 triggers the grounding signal at the line end. By sharing a locking part 122 with the grounding hook 300 and the grounding clip 100, it can be helpful to enforce and standardize the operating procedures for hanging the ground wire, reduce manual operation steps to eliminate the risks brought by human operation, and prevent the situation where the ground wire is hung without grounding the ground end. At the same time, it can also avoid the situation where the grounding end is removed before the hanging ground wire is removed, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0058] like Figure 2 As shown, the grounding clip 100 is connected to the grounding hook 300 via a first wire 310, and the locking member 122 is connected to the grounding hook 300 via a second wire 320. The second wire 320 is shorter than the first wire 310, so that the hooking operation of the grounding hook 300 is restricted by the position of the locking member 122. When the grounding clip 100 is not clamped to the rail 200, the locking member 122 is trapped in the grounding clip 100 and cannot be removed, and the grounding hook 300 cannot be hooked onto the contact network 400. When the grounding hook 300 is not separated from the contact network 400, the locking member 122 cannot be inserted back into the grounding clip 100 due to the length of the second wire 320. The locking member 122 cannot release the clamping connection between the grounding clip 100 and the rail 200, and the grounding clip 100 cannot be removed from the rail 200. The grounding clip 100 is bound to the grounding hook 300 through the locking piece 122. When the grounding clip 100 is locked in place with the rail 200, the locking piece 122 can be pulled out of the grounding clip 100 to lock the grounding clip 100, and the grounding hook 300 can be connected to the contact network 400; when the grounding hook 300 is separated from the contact network 400, the locking piece 122 can be inserted back into the grounding clip 100 to unlock the grounding clip 100.

[0059] The technical solution of the present invention, by setting the length of the second wire 320 shorter than that of the first wire 310, allows the locking member 122 to be removed from the grounding clamp 100 only after the grounding clamp 100 is clamped to the rail 200. Only then can the grounding hook 300, with the locking member 122, be hooked onto the contact wire 400. When the grounding hook 300 is attached to the contact wire 400, the second wire 320 is shorter than the first wire 310. The locking member 122 is constrained by the second wire 320 and can only be positioned outside the grounding clamp 100 and cannot be inserted back into the grounding clamp 100. Furthermore, the grounding clamp 100 cannot be removed from the rail 200. Only after the grounding hook 300 is removed from the contact wire 400 can the locking member 122 be inserted back into the grounding clamp 100, thereby unlocking the grounding clamp 100. This helps enforce standardized procedures for grounding wire attachment, reduces manual steps, and eliminates risks associated with human intervention.

[0060] Furthermore, if Figure 2 As shown, a storage portion 330 for storing the locking piece 122 is also provided on the insulating rod of the grounding hook 300. When the grounding hook 300 is hooked on the contact network 400, the locking piece 122 is pulled out from the grounding clip 100 and can be placed in the storage portion 330 to avoid the loss of the locking piece 122 and improve the convenience of operation.

[0061] like Figures 1 to 7 As shown, the intelligent grounding device also includes a grounding rod 110. The grounding clamp 100 includes a clamping module 120 and an intelligent detection module 130. The clamping module 120 is movably mounted on one side of the grounding rod 110. The clamping module 120 includes a body 121 and a first locking portion 123 and a second locking portion 124 that are drivingly connected to a locking member 122. The locking member 122 is pluggable into the body 121. The first locking portion 123 can unlock the locking member 122, while the second locking portion 124 can unlock the connection between the grounding clamp 100 and the rail 200.

[0062] like Figures 5 to 9 As shown, the first locking portion 123 includes a first drive pin 1231 and a first limit block 1232 connected to each other, which are used to abut against the locking member 122 and limit the movement of the locking member 122. The first drive pin 1231 and the first limit block 1232 are connected by a thread, or can be connected by other means. The first drive pin 1231 can drive the first limit block 1232 to move within the body 121.

[0063] like Figure 9 As shown, the second locking portion 124 includes: a second limiting block 1241 and a second driving pin 1242, as shown in FIG. Figure 3As shown, the locking member 122 abuts or separates from the second limit block 1241 to limit or drive the movement of the second limit block 1241, thereby driving the second transmission pin 1242 to move within the body. When the locking member 122 is separated from the second limit block 1241, the second transmission pin 1242 can abut against the grounding rod 110 to limit the movement of the grounding rod 110. In this embodiment, the second transmission pin 1242 and the second limit block 1241 are connected by screws, and can also be connected by other means. The second limit block 1241 can drive the second transmission pin 1242 to move within the body 121. The first transmission pin 1231 is arranged to protrude from the clamping portion 1211. The first locking portion 123 and the second locking portion 124 are respectively in transmission connection with the locking member 122.

[0064] When the grounding clamp 100 and the rail 200 are clamped in place, Figures 6 and 7 As shown, the first transmission pin 1231 is squeezed by the rail 200 and moves into the main body 121. The first transmission pin 1231 drives the first limit block 1232 to move so that the first limit block 1232 is separated from the locking member 122, thereby releasing the limit on the locking member 122, so that the locking member 122 can be pulled out of the main body 121 and separated from the second limit block 1241, releasing the limit on the second limit block 1241, and the second limit block 1241 drives the second transmission pin 1242 to displace in the main body 121, and abuts against the grounding rod 110 to limit the movement of the grounding rod 110, thereby limiting the grounding clip 100 to the rail 200, and the grounding hook 300 can be hung with the contact network 400. When the grounding hook 300 is separated from the contact network 400, the locking piece 122 can be inserted back into the body 121, so that the second transmission pin 1242 of the second locking portion 124 is lifted and separated from the grounding rod 110, thereby unlocking the connection between the grounding clip 100 and the rail 200.

[0065] The technical solution of the present invention is to set a clamping module 120, which includes a main body 121 and a first locking portion 123 and a second locking portion 124 that are transmission-connected to a locking member 122. The locking member 122 can be plugged into the main body 121. When the grounding clamp 100 is clamped with the rail 200, the first transmission pin 1231 is squeezed by the rail 200 and moves into the main body 121 to release the limit on the locking member 122, so that the locking member 122 can be pulled out of the main body 121 and drive the second locking portion 124 to abut against the grounding rod 110 to limit the movement of the grounding rod 110, thereby preventing the clamping module 120 from being locked on the grounding rod 110. 10, thereby limiting the grounding clamp 100 to the rail 200, preventing the grounding clamp 100 from being separated from the rail 200, and ensuring that when the grounding clamp 100 is not clamped to the rail 200, the grounding hook 300 cannot be hung on the contact network 400, and when the grounding hook 300 of the contact network 400 is not removed, the grounding clamp 100 cannot be removed from the rail 200, which can be conducive to enforcing and standardizing the operation process of hanging the ground wire, reducing manual operation steps to eliminate the risks brought by human operation, and preventing the situation where the ground wire is hung without grounding the ground terminal, and also preventing the situation where the ground terminal is removed from the ground when the hanging ground wire is not removed.

[0066] In the technical solution of the present invention, the first transmission pin 1231 can drive the first limit block 1232 to move, thereby locking or unlocking the locking member 122, allowing the locking member 122 to be located within or removed from the body 121. When the grounding clamp 100 is not clamped to the rail 200, the locking member 122 is located within the body 121 and cannot be removed, and the grounding hook 300 cannot be hooked onto the contact network 400. When the grounding hook 300 is not removed from the contact network 400, the locking member 122 is located outside the body 121 and cannot be inserted back into the body 121. The first locking portion 123 and the second locking portion 124 both remain locked, and the grounding clamp 100 cannot be removed from the rail 200. This can help to enforce and standardize the operating procedures for hooking ground wires, reduce manual operation steps to eliminate the risks brought about by human operation, and help improve the safety of electrified railway maintenance operations.

[0067] Furthermore, if Figure 15 As shown, a waterproof structure S1 (such as an O-ring) is provided between the first driving pin 1231 and the body 121 to improve the waterproof level and vibration resistance of the clamping module 120 .

[0068] like Figures 6 and 7 As shown, the body 121 includes a clamping portion 1211 for clamping the rail 200, and the first transmission pin 1231 can extend or retract into the clamping portion 1211, and drive the first limit block 1232 to move in the body 121 to abut or separate from the locking member 122. Figure 10As shown, when the grounding clamp 100 is not engaged with the rail 200, the first drive pin 1231 protrudes from the clamping portion 1211, and the first limit block 1232 abuts against the locking member 122 to restrict its movement, rendering the locking member 122 in an unremovable state. The first locking portion 123 also includes a first elastic member 1233, which is sleeved around the first drive pin 1231 and provides an elastic restoring force for its movement. Under the elastic force of the first elastic member 1233, the first drive pin 1231 is pushed outward from the body 121.

[0069] like Figure 4 As shown, the outer periphery of the locking member 122 is provided with a locking groove 1221. Figure 5 As shown, the first limiting block 1232 includes a first connecting portion 12321 and a limiting portion 12322. The first connecting portion 12321 is connected to the first driving pin 1231. The limiting portion 12322 is located in the locking groove 1221 to limit the locking member 122 from being removed from the body 121. The limiting portion 12322 is separated from the locking groove 1221 to release the restriction on the locking member 122 in the body 121. When the grounding clamp 100 is not engaged with the rail 200, the limiting portion 12322 is engaged in the locking groove 1221, preventing the locking member 122 from being removed from the body 121. Only when the clamping portion 1211 fully clamps the rail 200 does the locking groove 1221 release the restriction on the locking member 122, allowing the locking member 122 to be removed. In the technical solution of the present invention, the first limit block 1232 can lock or unlock the locking member 122, so that the locking member 122 can be located in the main body 121 or pulled out from the main body 121, so that the grounding clip 100 can be detached from the rail 200, which is conducive to enforcing and standardizing the operating procedures for hanging ground wires, reducing manual operation steps to eliminate the risks brought by human operation, and is conducive to improving the safety of electrified railway maintenance operations.

[0070] like Figure 1 As shown, the grounding clamp 100 further includes a driving shaft 140 and a fastener 150. The driving shaft 140 is coaxially connected to the grounding rod 110 through a thread. Figure 13 as well as Figure 18 As shown, waterproof structures S1 (such as O-rings) are provided on both sides of the connection to enhance waterproof and vibration resistance. Fastener 150 is coupled to drive shaft 140. Rotating fastener 150 drives drive shaft 140 to move, thereby driving clamp module 120 to move on grounding rod 110, allowing grounding clamp 100 to clamp rail 200.

[0071] When the locking member 122 is removed from the grounding clamp 100, the drive shaft 140 is locked by the second locking portion 124 and cannot rotate. This prevents the fastener 150 from being loosened, nor can the grounding clamp 100 be loosened. Only after the grounding hook 300 of the contact network 400 is removed can the locking member 122 be inserted back into the grounding clamp 100, unlocking the drive shaft 140 and, in turn, loosening the fastener 150 to unlock the grounding clamp 100. This process mechanically constrains the connection sequence of the grounding hook 300, helping to enforce a standardized process for grounding wire connection, reducing manual steps and eliminating the risks associated with human intervention.

[0072] Specifically, the fastener 150 in this embodiment is a butterfly nut that mates with the threads of the grounding rod 110 to facilitate quick on-site tightening or removal of the grounding clip 100. Rotation of the butterfly nut drives rotation of the drive shaft 140, enabling forward and backward movement of the grounding clip 100 on the grounding rod 110. The butterfly nut and drive shaft 140 are flatly aligned and are locked with a set screw to ensure synchronous rotation of the drive shaft 140 and the butterfly nut.

[0073] like Figure 3 As shown, the second locking portion further includes a second elastic member 1243 sleeved on the outside of the second transmission pin 1242 to provide elastic restoring force for the second transmission pin 1242. Specifically, a notch 12411 is further provided at the abutment between the second limit block 1241 and the locking member 122. The notch 12411 has an inclined surface that mates with the end of the locking member 122, thereby preventing the second limit block 1241 from affecting the movement of the locking member 122.

[0074] like Figure 3 As shown, when the grounding clamp 100 is not engaged with the rail 200, the locking piece 122 is inserted into the main body 121 and abuts against the second limit block 1241, limiting the second limit block 1241 to the upper inner part of the main body 121. At this time, the second transmission pin 1242 is also lifted and separated from the drive shaft 140, avoiding the abutment between the second transmission pin 1242 and the drive shaft 140. At this time, the rotation of the drive shaft 140 is not restricted.

[0075] like Figures 6 and 7 As shown, when the grounding clamp 100 and the rail 200 are clamped in place, the locking piece 122 can be pulled out from the main body 121 and separated from the second limit block 1241 to release the limit on the second limit block 1241. The second limit block 1241 moves under the elastic action of the second elastic piece 1243 and drives the second transmission pin 1242 to move, so that the second transmission pin 1242 abuts against the drive shaft 140 to limit the rotation of the drive shaft 140.

[0076] In the technical solution of the present invention, when the locking piece 122 is pulled out of the main body 121, it can drive the second limit block 1241 to move, thereby driving the second locking part 124 to move and abut against the drive shaft 140 to limit the movement of the grounding rod 110, preventing the clamping module 120 from moving on the grounding rod 110, thereby limiting the grounding clamp 100 to the rail 200, preventing the grounding clamp 100 from detaching from the rail 200, and ensuring that when the grounding clamp 100 does not clamp the rail 200, the grounding hook 300 cannot be hung on the contact network 400, and when the grounding hook 300 of the contact network 400 is not removed, the grounding clamp 100 cannot be removed from the rail 200, which can be conducive to enforcing and standardizing the operating procedures for hanging ground wires, reducing manual operation steps and eliminating the risks brought by human operation.

[0077] like Figure 8 As shown, a plurality of limiting tooth grooves 141 are arranged around the outer circumference of the driving shaft 140. Figures 13 and 14 As shown, the second transmission pin 1242 is provided with a second connecting portion 12421 on a side near the drive shaft 140. The outer periphery of the second connecting portion 12421 matches the inner wall shape of any limiting tooth groove 141, and the second connecting portion 12421 can engage with any limiting tooth groove 141 to limit the rotation of the drive shaft 140. When the locking member 122 is removed, the second transmission pin 1242, under the action of the second elastic member 1243, falls into the limiting tooth groove 141 of the drive shaft 140 (or may fall on the toothed surface of the drive shaft 140; a slight rotation of the fastener 150 will cause the second transmission pin 1242 to fall into the limiting tooth groove 141 of the drive shaft 140). At this time, the drive shaft 140 is locked and cannot rotate, and the fastener 150 is also unable to rotate. This ensures that the grounding clip 100 cannot be loosened from the rail 200 when the locking member 122 is not inserted. Then the locking member 122 can be pulled out, and the grounding hook 300 is hung on the contact network 400, thereby completing the operation of grounding the contact network 400.

[0078] like Figure 2 As shown, when removing the grounding clip 100, the grounding hook 300 must be removed first, and then the locking piece 122 bound to the grounding hook 300 is inserted back into the body 121. After being inserted into the body 121, the second limit block 1241 is lifted by the locking piece 122, thereby driving the second transmission pin 1242 to be lifted upward and withdrawn from the limit tooth groove 141 of the drive shaft 140, thereby unlocking the rotation of the drive shaft 140, and rotating the fastener 150 to remove the grounding clip 100 from the rail 200.

[0079] like Figure 10As shown, the intelligent detection module 130 includes a first detection unit and a second detection unit. The first detection unit includes a metal detector 131 and an insulating member 132, which are used to detect whether the grounding clamp 100 is effectively grounded. The detector 131 is embedded in the end of the first drive pin 1231 near the rail 200. The first drive pin 1231 can trigger the detector 131 to detect the grounding status of the grounding clamp. The detector 131 can detect the insulation layer and rust on the surface of the rail 200. The insulating member 132 is located on the periphery of the detector 131.

[0080] like Figures 13 to 17 As shown, the second detection unit includes a detection pin 136 and a sensing component for detecting the grounding status of the grounding clamp 100; the detection pin 136 is in driving connection with the first limit block 1232. The technical solution of the present invention provides a first detection unit and a second detection unit. The first detection unit can detect whether the grounding clamp 100 is effectively grounded, and the detection pin 136 is in driving connection with the first limit block 1232, which can trigger the second detection unit to detect the grounding status of the grounding clamp 100. This helps ensure the effective grounding of the grounding clamp 100 and improves the safety and efficiency of electrified railway maintenance operations.

[0081] The first driving pin 1231 is insulated from the body 121 by the insulating member 132 . Specifically, the insulating member 132 may be provided by wrapping the detection portion 131 with a nylon sleeve.

[0082] like Figure 10 As shown, the detection unit 131 is electrically connected to the inside of the intelligent detection module 130 via a first wire 133. Figure 11 As shown, a second wire 134 electrically connected to the inside of the intelligent detection module 130 is further provided inside the main body 121. The first wire 133 and the second wire 134 are located at opposite ends of the main body 121 (such as the first wire 133 is located on the left side of the main body 121, and the second wire 134 is located on the right side of the main body 121). The intelligent detection module 130 determines whether the rail 200 meets the preset insulation and rust grinding conditions by detecting the resistance between the first wire 133 and the second wire 134. If the detection unit 131 measures that the resistance exceeds the limit, the intelligent detection module 130 will issue an alarm and the rail 200 needs to be re-grinded until the test passes before continuing the operation to avoid invalid grounding.

[0083] The technical solution of the present invention is to provide a first conductor 133 and a second conductor 134. The intelligent detection module 130 detects the resistance between the first conductor 133 and the second conductor 134 and compares it with a preset resistance threshold to determine whether the rail 200 meets the preset insulation and rust grinding conditions, thereby being able to detect whether the grounding clamp 100 is effectively grounded, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0084] like Figures 13 to 17 As shown, the sensing component includes a micro switch 135 and a trigger 137. Figures 13 to 15 As shown, the second driving pin 1242 can trigger the second detection unit to detect the grounding state of the grounding clip 100 .

[0085] like Figure 17 As shown, the trigger member 137 includes a first end 1371 and a second end 1372 that are oppositely disposed. Figures 13 and 14 As shown, the first end 1371 can trigger the micro switch 135, and the second end 1372 is arranged in contact with the detection pin 136. Furthermore, a reset torsion spring is provided on the trigger member 137 to drive the trigger member 137 to reset.

[0086] The normally open node of the micro switch 135 is used to detect the grounding status of the grounding clip 100. The connecting wire of the micro switch 135 is sent into the main body 121 through the wire groove on the main body 121, and then passes through the wire hole S3 of the cover plate 125 to enter the intelligent detection module 130. The grounding status of the grounding clip 100 is judged by the triggering state of the micro switch 135.

[0087] like Figure 10 As well as Figures 13 to 15 As shown, when the grounding clamp 100 is not engaged with the rail 200, the first transmission pin 1231 protrudes from the clamping portion 1211, and the first end 1371 does not trigger the micro switch 135; when the grounding clamp 100 is engaged with the rail 200, the first transmission pin 1231 is squeezed by the rail 200 and moves, and pushes the detection pin 136 to move, and the detection pin 136 drives the second end 1372 to move, thereby driving the first end 1371 to trigger the micro switch 135 to generate a grounding status signal.

[0088] The technical solution of the present invention is to set a microswitch 135, a detection pin 136 and a trigger member 137. When the grounding clamp 100 is not engaged with the rail 200, the first end 1371 does not trigger the microswitch 135; when the grounding clamp 100 is engaged with the rail 200, the first transmission pin 1231 is squeezed by the rail 200 and moves, and pushes the detection pin 136 to move. The detection pin 136 drives the second end 1372 to move, thereby driving the first end 1371 to trigger the microswitch 135 to generate a grounding status signal, thereby being able to detect the grounding status of the grounding clamp 100, which is beneficial to improving the safety and efficiency of electrified railway maintenance operations.

[0089] like Figure 13 as well as Figure 15As shown, the second detection unit further includes: a third elastic member 138 and a limit pin 139. The third elastic member 138 is sleeved on the outside of the detection pin 136. When the grounding clamp 100 is not engaged with the rail 200, the detection pin 136 extends toward the side where the trigger member 137 is located under the elastic action of the third elastic member 138. The limit pin 139 is provided in the body 121. The limit pin 139 is located on the side of the detection pin 136 close to the trigger member 137. The limit pin 139 can limit the extension length of the detection pin 136. Specifically, as shown in FIG. Figure 16 As shown, the detection pin 136 has a groove 1361 , and the limiting pin 139 is located in the groove 1361 to limit the extension length of the detection pin 136 .

[0090] Furthermore, the intelligent detection module 130 also includes a positioning communication unit for uploading the detection results and positioning information to the background system in real time, thereby improving efficiency and safety traceability.

[0091] like Figure 18 As shown, in this embodiment, the intelligent detection module 130 is connected to the clamping module 120 through a number of connecting screws. Specifically, the intelligent detection module 130 is connected to the clamping module 120 through four hexagon socket screws S4. A cover plate 125 is also provided on the connection surface between the clamping module 120 and the intelligent detection module 130. Wire holes S3 are respectively provided on the connection surface of the cover plate 125 and the intelligent detection module 130 to connect the wires electrically connected to the first detection unit and the second detection unit. A waterproof structure S1 (such as foam glue) is provided around the wire hole S3 of the intelligent detection module 130 to prevent loosening and waterproofing. Figure 11 As shown, a silicone pad S2 is also provided on the cover 125 to enhance shockproof and waterproof capabilities to protect internal circuits.

[0092] Furthermore, if Figure 19 As shown, the upper cover and battery cover of the intelligent detection module 130 are respectively provided with a waterproof structure S1 (such as a silicone ring), and other waterproof structures S1 can also be provided to improve the waterproof level of the clip module 120, extend the service life of the intelligent detection module 130, enhance the stability and reliability of the device in harsh environments, and enable the grounding clip 100 to be suitable for different environments.

[0093] Next, the specific working steps of the intelligent grounding device are described.

[0094] like Figure 2As shown, when a grounding wire needs to be connected, maintenance personnel align the grounding clamp 100 with the rail 200 and rotate the fastener 150 to drive the clamping portion 1211 to clamp the rail 200. After clamping, the first drive pin 1231 is compressed and retracted, and the first limit block 1232 separates from the locking groove 1221, allowing the locking member 122 to be unlocked and removed. The metal detection unit 131 detects whether the rail 200 meets the grounding requirements. The first drive pin 1231 drives the detection pin 136 to move, thereby driving the trigger member 137 to trigger the microswitch 135, generating a grounding status signal.

[0095] After the locking piece 122 is pulled out, the restriction on the second limit block 1241 is released, the second limit block 1241 moves downward and drives the second transmission pin 1242 to move downward and get stuck in the limit tooth groove 141 of the drive shaft 140, and the drive shaft 140 cannot rotate. At this time, the grounding clip 100 is locked to the rail 200 and cannot be removed.

[0096] Next, hang the ground wire to the contact network 400 to complete the grounding of the contact network 400.

[0097] When the ground wire needs to be removed, first remove the ground hook 300 and insert the locking piece 122 back into the main body 121. The locking piece 122 drives the second limit block 1241 to move upward and drives the second transmission pin 1242 to move upward and leave the limit tooth groove 141, thereby releasing the rotation restriction of the drive shaft 140. At this time, the rotating fastener 150 can remove the ground clip 100 from the rail 200.

[0098] like Figure 20 As shown, an embodiment of the present invention further provides a grounding method for an electrified railway contact network, which is performed by an intelligent grounding device according to any of the aforementioned embodiments of the present invention. The grounding method includes steps S100 to S400.

[0099] In step S100 , the grounding clip 100 is clamped to the rail 200 , and at least a portion of the grounding clip 100 is squeezed by the rail 200 to release the position restriction on the locking member 122 , so that the locking member 122 can be pulled out.

[0100] In step S200, the locking piece 122 is pulled out from the grounding clamp 100, and the grounding clamp 100 is restricted to the rail 200. The hooking operation of the grounding hook 300 is restricted by the position of the locking piece 122. When the locking piece 122 is in the pulled-out unlocked state, the grounding hook 300 can perform the operation of hooking the contact network 400.

[0101] In step S300, the locking member 122 is inserted into the grounding hook 300, and the grounding hook 300 is hooked on the contact network 400. The grounding hook 300 triggers the grounding signal at the line end. The locking member 122 cannot be inserted back into the grounding clip 100 due to the hooking state of the grounding hook 300. The locking member 122 cannot unlock the connection between the grounding clip 100 and the rail 200, and the grounding clip 100 cannot be removed from the rail 200, thereby realizing a mandatory grounding operation sequence.

[0102] In step S400 , the grounding hook 300 is separated from the contact network 400 . Since the grounding hook 300 is not hooked, the locking member 122 can be inserted back into the grounding clip 100 to unlock the connection between the grounding clip 100 and the rail 200 .

[0103] The technical solution of the present invention, by sharing a locking part 122 between the grounding hook 300 and the grounding clip 100, can help to enforce and standardize the operation process of hanging the ground wire, reduce manual operation steps to eliminate the risks brought by human operation, and prevent the situation where the ground wire is hung without grounding the ground end. At the same time, it can also avoid the situation where the ground end is removed from the ground before the hanging ground wire is removed, which is conducive to improving the safety and efficiency of electrified railway maintenance operations.

[0104] The grounding method further includes step S500. In step S500, when the grounding clamp 100 is not clamped to the rail 200, the locking member 122 is locked in the grounding clamp 100 and cannot be removed. Therefore, the grounding hook 300 cannot be hooked to the contact network 400 because the locking member 122 is in the grounding clamp 100 and cannot be removed.

[0105] By sharing a locking member 122 for the grounding hook 300 and the grounding clip 100, the present invention ensures that when the grounding clip 100 is not clamped to the rail 200, the locking member 122 is located within the body 121 and cannot be removed, preventing the grounding hook 300 from hooking onto the contact wire 400. The grounding clip 100 cannot be removed from the rail 200 unless the grounding hook 300 is removed from the contact wire 400. Only after the grounding hook 300 is removed from the contact wire 400 can the locking member 122 be inserted back into the body 121, thereby unlocking the grounding clip 100. This means that "wires cannot be hooked without clamping the rail 200, and the grounding clip 100 cannot be released without removing the wires." This helps enforce standardized procedures for hooking ground wires, reduces manual steps, and eliminates risks associated with human intervention. This prevents hooking a ground wire without grounding the grounding terminal, and also prevents disconnecting the grounding terminal before disconnecting the hooked ground wire. The intelligent detection module 130 can detect whether the grounding clamp 100 is effectively grounded and the grounding status, judge the surface condition of the rail 200, and avoid blind grounding in areas with excessive insulation or rust, which is conducive to improving the safety and efficiency of electrified railway maintenance operations.

[0106] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Intelligent grounding device for electrified railway contact network, including: A grounding hook that can be hooked on the contact network, and a grounding clip that can be detachably unlocked from the rail, wherein the grounding hook and the grounding clip share a locking piece. When the grounding clip is clamped on the rail, the grounding signal of the grounding end is triggered, the limit of the locking member is released, and the locking member is in a pull-out state; after the locking member is pulled out, the grounding clip is locked to the rail; the locking member pulls out the grounding clip, the grounding hook is hooked on the contact network, and the grounding hook triggers the grounding signal of the line end to realize a mandatory grounding operation sequence.

2. The intelligent grounding device according to claim 1, characterized in that: The grounding clip is connected to the grounding hook via a first wire, and the locking member is connected to the grounding hook via a second wire. The length of the second wire is shorter than the length of the first wire, so that the hooking operation of the grounding hook is limited by the position of the locking member. When the grounding clip is not clamped to the rail, the locking piece is limited in the grounding clip and is in a non-removable state, and the grounding hook cannot be hooked on the contact network; when the grounding hook is not separated from the contact network, the locking piece cannot be inserted back into the grounding clip due to the length limitation of the second wire, the locking piece cannot unlock the connection between the grounding clip and the rail, and the grounding clip cannot be removed from the rail.

3. The intelligent grounding device according to claim 2, characterized in that: The intelligent grounding device further comprises a grounding rod, and the grounding clamp comprises: a clamp module and an intelligent detection module. The clamping module is movably arranged on one side of the grounding rod, and includes a body and a first locking portion and a second locking portion that are transmission-connected to the locking member. The first locking portion can unlock the locking member, and the second locking portion can unlock the connection between the clamp and the rail. When the grounding clamp is locked in place with the rail, at least part of the first locking portion is squeezed by the rail and moves into the body, so that the locking member can be pulled out of the body and the second locking portion is driven to abut against the grounding rod to restrict the grounding clamp to the rail, and the grounding hook can be hooked to the contact network; When the grounding hook is separated from the contact network, the locking member can be inserted back into the body, so that at least a portion of the second locking portion is lifted up and separated from the grounding rod, thereby driving at least a portion of the first locking portion to withdraw from the body, thereby unlocking the connection between the grounding clip and the rail; At least part of the structure of the intelligent detection module is arranged on the first locking part, which is used to detect whether the grounding clip is effectively grounded. At least part of the structure of the first locking part can trigger at least part of the structure of the intelligent detection module to detect the grounding state of the grounding clip.

4. The intelligent grounding device according to claim 3, characterized in that: The first locking portion includes a first transmission pin and a first limiting block connected to each other, and is used to abut against the locking member and limit the movement of the locking member; The second locking portion includes a second limiting block and a second transmission pin connected to each other, and when the locking member is separated from the second locking portion, the second locking portion can abut against the grounding rod to limit the movement of the grounding rod; In which, when the grounding clamp is engaged with the rail, the first transmission pin is squeezed by the rail and moves into the body, and the first transmission pin drives the first limit block to move so that the first limit block is separated from the locking piece, thereby releasing the limit on the locking piece, so that the locking piece can be pulled out of the body and separated from the second limit block, releasing the limit on the second limit block, and the second limit block drives the second transmission pin to move in the body and abut against the grounding rod to limit the movement of the grounding rod, thereby limiting the grounding clamp to the rail.

5. The intelligent grounding device according to claim 4, characterized in that: The main body includes a clamping portion for clamping the rail, the first transmission pin can extend or retract into the clamping portion, and drive the first limit block to move within the main body to abut against or separate from the locking member. When the grounding clamp is not engaged with the rail, the first transmission pin protrudes from the main body, the first limit block abuts against the locking member to restrict the movement of the locking member, and the locking member is in a non-removable state. The first locking portion further includes a first elastic member, which is sleeved on the outside of the first transmission pin and provides an elastic reset force for the movement of the first transmission pin.

6. The intelligent grounding device according to claim 4, characterized in that: A locking groove is provided on the outer periphery of the locking piece, and the first limiting block includes a first connecting portion and a limiting portion, the first connecting portion is connected to the first transmission pin, the limiting portion is located in the locking groove to limit the locking piece from being pulled out of the main body, and the limiting portion is separated from the locking groove to release the restriction on the locking piece in the main body.

7. The intelligent grounding device according to claim 4, characterized in that: The grounding clamp also includes a drive shaft and a fastener. The drive shaft is coaxially connected to the grounding rod, and the fastener is cooperatively connected to the drive shaft. Rotating the fastener can drive the drive shaft to move, thereby driving the clamp module to move on the grounding rod, so that the grounding clamp can clamp the rail.

8. The intelligent grounding device according to claim 7, characterized in that: The locking member abuts against or separates from the second limiting block to limit or drive the second limiting block to move, thereby driving the second transmission pin to move within the body. The second locking portion further includes: A second elastic member is sleeved on the outside of the second transmission pin and provides elastic restoring force for the second transmission pin. Wherein, when the grounding clamp is not engaged with the rail, the locking piece is inserted into the body and abuts against the second limit block to limit the movement of the second limit block; when the grounding clamp is engaged with the rail, the locking piece can be pulled out of the body and separated from the second limit block to release the limit on the second limit block, and the second limit block moves under the elastic action of the second elastic piece and drives the second transmission pin to move, so that the second transmission pin abuts against the drive shaft to limit the rotation of the drive shaft.

9. The intelligent grounding device according to claim 7, characterized in that: A plurality of limiting tooth grooves are provided around the outer circumference of the drive shaft, and a second connecting portion is provided on the side of the second transmission pin close to the drive shaft. The outer peripheral shape of the second connecting portion is matched with the inner wall shape of any of the limiting tooth grooves, and the second connecting portion can be matched with any of the limiting tooth grooves to limit the rotation of the drive shaft.

10. The intelligent grounding device according to claim 5, characterized in that: The intelligent detection module includes a first detection unit and a second detection unit. The first detection unit includes a metal detection portion and an insulating member, and is used to detect whether the grounding clamp is effectively grounded. The detection portion is embedded in one end of the first transmission pin close to the rail, and the insulating member is provided on the periphery of the detection portion. The second detection unit includes a detection pin and a sensing component, and is used to detect the grounding state of the grounding clamp; the detection pin is transmission-connected to the first limit block.

11. The intelligent grounding device according to claim 10, characterized in that: The detection part is electrically connected to the interior of the intelligent detection module through a first wire. A second wire electrically connected to the interior of the intelligent detection module is also provided inside the body. The intelligent detection module determines whether the rail meets the preset insulation and rust grinding conditions by detecting the resistance between the first wire and the second wire.

12. The intelligent grounding device according to claim 10, characterized in that: The sensing component includes: micro switches; and a trigger member, the trigger member comprising a first end and a second end disposed opposite to each other, the first end being capable of triggering the micro switch, and the second end being disposed in contact with the detection pin; Among them, when the grounding clamp is not engaged with the rail, the first transmission pin protrudes from the clamping portion and the first end does not trigger the micro switch; when the grounding clamp is engaged with the rail, the first transmission pin is squeezed by the rail and moves, and drives the first limit block to push the detection pin to displace, and the detection pin pushes the second end to move, thereby driving the first end to trigger the micro switch to generate a grounding status signal.

13. The intelligent grounding device according to claim 12, characterized in that: The second detection unit further includes: a third elastic member, the third elastic member being sleeved on the outside of the detection pin, and when the grounding clamp is not engaged with the rail, the detection pin extends toward the side where the trigger member is located under the elastic action of the third elastic member; and A limit pin is provided in the main body, and the limit pin is located on a side of the detection pin close to the trigger member, and the limit pin can limit the extension length of the detection pin.

14. A grounding method for an electrified railway contact network, characterized in that: The grounding method is performed by the intelligent grounding device according to any one of claims 1 to 13, and the grounding method includes: The grounding clamp is clamped into place with the rail, and at least a portion of the structure of the grounding clamp is squeezed by the rail to release the position restriction on the locking member, so that the locking member is in a pull-out state; Pull out the locking piece from the grounding clamp to restrict the grounding clamp to the rail. The hooking operation of the grounding hook is restricted by the position of the locking piece. When the locking piece is in the pulled-out unlocked state, the grounding hook can perform the operation of hooking the contact network. The locking member is inserted into the grounding hook, and the grounding hook is hooked to the overhead wire. The grounding hook triggers a grounding signal at the line end. The locking member cannot be inserted back into the grounding clip due to the hooked state of the grounding hook. The locking member cannot unlock the connection between the grounding clip and the rail, and the grounding clip cannot be removed from the rail, thereby achieving a mandatory grounding operation sequence. The grounding hook is separated from the contact network, and the locking piece can be inserted back into the grounding clip due to the unhooked state of the grounding hook to unlock the clamping connection between the grounding clip and the rail.

15. The grounding method according to claim 14, wherein: The grounding method further includes: When the grounding clamp does not clamp the rail, the locking piece is locked in the grounding clamp and cannot be pulled out. The grounding hook cannot be hooked to the contact network because the locking piece is in the grounding clamp and cannot be pulled out.

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