CN211957948U - Clamping type grounding device - Google Patents

Abstract

The utility model is suitable for an earthing device discloses a card formula earthing device, card formula earthing device including the clamp splice part that is used for the centre gripping rail, be used for adjusting the clamp splice part of clamp splice part and with the ground connection stake that the clamp splice part is connected and is used for connecting the ground wire, clamp splice part integrated into one piece has and is used for connecting the base portion of ground connection stake. The utility model provides a card formula earthing device, it has simple structure, simple to operate and the good characteristics of reliability.

Description

Clamping type grounding device

Technical Field

The utility model belongs to the earthing device field especially relates to a card formula earthing device.

Background

In the electrical field, when a power failure inspection is required, in order to prevent a sudden incoming call or an attack of remaining electricity in the equipment, it is necessary to provide a ground wire at a specific position of the electrical equipment and then ground the ground wire (also referred to simply as the ground wire). The grounding operation of a contact net in rail transit is generally to install a grounding device on a rail (return rail), namely to connect the return rail with the contact net during maintenance so as to ensure the personal safety of operating personnel.

Prior application No. 201420287291.2, issued as 2014 12, 17 discloses a grounding device for contact net, which clamps a rail by a clamp assembly, connects a connecting piece to the clamp assembly by a fastener, connects a grounding pile at the other end of the connecting piece, and grounds the rail by the clamp assembly-connecting piece-grounding pile. The required spare part of this scheme is more, and the structure is comparatively complicated, and the installation procedure is loaded down with trivial details, and the cost is higher to train can produce vibrations when moving on the rail, long-time vibrations can make the connection between connection piece and the anchor clamps subassembly take place not hard up, appears the connection piece even and breaks away from the anchor clamps subassembly, leads to rail (return current rail) to lose the ground connection effect, seriously threatens operation personnel's personal safety.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem at least, provide a card formula earthing device, its simple structure, simple to operate and reliability are good.

The technical scheme of the utility model is that: a clamping type grounding device comprises a clamping block part used for clamping a rail, a clamping part used for adjusting the clamping block part and a grounding pile connected with the clamping block part and used for connecting a ground wire, wherein a base part used for connecting the grounding pile is integrally formed on the clamping block part.

Optionally, the clamping block component includes a first clamping block and a second clamping block which are oppositely arranged, a clamping groove structure is arranged on one side of the first clamping block, which is opposite to the second clamping block, and the base portion is connected to one side of the first clamping block, which is opposite to the second clamping block.

Optionally, the clamping component includes a screw rod connected to the first clamping block and the second clamping block, and an adjusting nut threadedly connected to the screw rod and used for adjusting the distance between the first clamping block and the second clamping block.

Optionally, the grounding stud comprises a grounding post fixedly connected to the base portion and a wing nut screwed to the grounding post and used for locking the ground wire.

Optionally, a lock seat is integrally formed on the top surface of the base portion, and a lock for limiting rotation of the wing nut or preventing the wing nut from disengaging from the ground stud is arranged on the lock seat.

Optionally, the lock comprises a lock pin which can extend into the movement travel space of the wing nut to limit the rotation or axial movement of the wing nut, and a driving part for driving the lock pin to extend and retract.

Optionally, the lock seat and the grounding stud are oppositely arranged from one side close to the clamping block part to the other side along the top surface of the base part, the lock is higher than the grounding stud, and the lock pin is opposite to the grounding stud.

Optionally, one side of the base part is connected to the clamping block member, the other side of the base part is used for connecting the grounding stud, and the locking seat is located between the grounding stud and the clamping block member.

Optionally, the lock is provided with a dust cover, and/or the bottom surface of the clamping block component is provided with an insulating pad.

Optionally, the top surface of the base portion is a slope surface with a height gradually decreasing from a side close to the clamping block member to a side far from the clamping block member.

The utility model provides a card formula earthing device through connecting the ground connection stake in integrated into one piece in the base portion of clamp splice part, makes ground connection stake and the centre gripping be connected more stably between the clamp splice part of rail to let the electric current on the contact net pass through the ground wire and this device conducts to rail (return current rail), even through the produced vibrations of long-time train operation, the ground wire still can connect steadily in this device, and compare in prior art, the utility model discloses the spare part of scheme is less, and the structure is more simple, convenient assembling.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a card-type grounding device according to an embodiment of the present invention;

fig. 2 is an exploded view of a card-type grounding device according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a clip type grounding device according to an embodiment of the present invention when a rail is assembled;

fig. 4 is a schematic perspective view of a first clamping block and a base portion of a card-type grounding device according to an embodiment of the present invention.

In the figure:

1. a clamp block member; 11. a first clamping block; 12. a second clamp block; 13. a slot structure; 14. an insulating base;

2. a clamping member; 21. a screw; 22. adjusting the nut;

3. a base part; 31. grounding piles; 311. a ground post; 312. a butterfly nut; 313. clamping the nut; 314. a spring washer; 315. a mounting seat; 3151. mounting holes;

32. a lock seat; 33. a lock; 331. a lock pin; 332. a key interface; 333. a dust cover; 34. a top surface;

4. a rail; 5. and a ground line.

Detailed Description

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

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is based on the orientation or positional relationship shown in the drawings or the conventional placement state or use state, and it is only for convenience of description and simplification of the description, but does not indicate or imply that the structures, features, devices or elements referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition in the present disclosure.

As shown in fig. 1 to fig. 3, the embodiment of the utility model provides a card formula earthing device can be applied to "ground connection" of contact net in rail transit transports such as high-speed railway, subway. It can understand ground, the utility model discloses in the embodiment "ground connection of contact net" not directly be connected contact net and ground, but be connected return current rail in with the rail 4 with the ground wire with the contact net, the upper end and the contact net of ground wire 5 are connected when overhauing, the return current rail is connected with the lower extreme of ground wire 5 through the card formula earthing device of this embodiment. The clamping type grounding device comprises a clamping block component 1 for clamping a rail 4, a clamping component 2 for adjusting the clamping block component 1, and a grounding pile 31 which is connected with the clamping block component 1 and is used for connecting a ground wire 5 (only the lower end head of the ground wire is shown in the schematic diagram of fig. 3, the wire body and the upper end head of the ground wire are omitted), namely, the ground wire 5 is connected with a return rail and a contact line in the rail 4, as shown in fig. 3, the clamping block component 1 is adjusted through the clamping component 2 to clamp the clamping block component 1 on the rail 4, and the clamping component 2 can adjust the clamping block component 1 to adapt to rails 4 of different models (sizes); referring to fig. 1, the clamp block member 1 is integrally formed with a base portion 3 for connecting a grounding stud 31, the grounding stud 31 is connected with the clamp block member 1 through the base portion 3, so that a stable connection of the grounding stud 31-the base portion 3-the clamp block member 1 can be formed between the ground wire 5 and the rail 4, current on a catenary can be conducted to the rail 4 (return rail) through the ground wire 5 and the connection, and the base portion 3 integrally formed with the clamp block member 1 does not loosen due to vibration generated by train operation or contact failure with the clamp block member 1, so that the grounding stud 31 and the clamp block member 1 are always stably and reliably connected. When the grounding device is installed on a rail 4, only the clamping part 2 needs to be adjusted firstly to enable the clamping block part 1 to be clamped on the rail 4, and then the ground wire 5 is connected to the grounding pile 31. The embodiment of the utility model provides a card formula earthing device compares in prior art, and it has simple structure, simple to operate and the good characteristics of reliability.

It should be noted that, the rail 4 is generally provided with two in parallel, one of them or two are return rails, and for convenience of description, except for other descriptions, this embodiment all takes the installation as an example in a return rail, but is not the limit of the present invention, and in specific application, this earthing device also can be applied to the return rail that independently sets up alone.

Specifically, as shown in fig. 1, the clamping block component 1 comprises a first clamping block 11 and a second clamping block 12 which are oppositely arranged, and a clamping groove structure 13 is arranged on one side of the first clamping block 11, which is opposite to one side of the second clamping block 12, and referring to fig. 3, when the rail is installed, the first clamping block 11 and the second clamping block 12 are respectively placed on two sides of the rail 4 by adjusting the clamping component 2, and the distance between the first clamping block 11 and the second clamping block 12 is adjusted by the clamping component 2, so that the first clamping block 11 and the second clamping block 12 are close to the rail 4, and the rail 4 is clamped in the clamping groove structure 13; and the base part 3 is connected to the side of the first clamping block 11 opposite to the second clamping block 12, so that the clamping block part 1 and the grounding pile 31 can not interfere with each other when the grounding device is installed.

In this embodiment, all the components in the first clamping block 11 and the second clamping block 12 can be made of metal materials with good electrical conductivity, such as iron, copper, aluminum and alloys thereof, unless otherwise stated. In other embodiments, the first clamping block 11 and the second clamping block 12 may also be made of stainless steel with good corrosion resistance. In a specific application, the first clamping block 11 can be placed on the outward side of the rail 4, that is, the grounding pile 31 is located on the outer side of the rail 4, so as to facilitate the connection of the ground wire 5, and simultaneously avoid the ground wire 5 or the grounding pile 31 and the like from influencing the running of the train.

Specifically, as shown in fig. 3, the slot structure 13 may be a C-shaped or L-shaped structure or other structures that can be engaged with the rail 4, and the slot structures 13 of the first clamping block 11 and the second clamping block 12 may be arranged in a mirror symmetry manner, so that when the rail 4 is clamped, the slot structures 13 can be respectively clamped on two sides of the rail 4. Of course, in a specific application, the first clamping block 11 and the second clamping block 12 may also be two oppositely arranged clamping plates.

Specifically, as shown in fig. 3, the clamping component 2 includes two screws 21 connected to the first clamping block 11 and the second clamping block 12, and two adjusting nuts 22 threadedly connected to the screws 21 and used for adjusting the distance between the first clamping block 11 and the second clamping block 12, as shown in fig. 2, in this embodiment, the screws 21 are arranged in parallel, and each screw 21 penetrates through the second clamping block 12 and is fixedly connected to the first clamping block 11, the first clamping block 11 can be fixedly connected to an end of the screw 21, or can be threadedly connected to the screw 21, and the adjusting nut 22 is connected to the other end of the screw 21, that is, the adjusting nut 22 is located on a side of the second clamping block 12 opposite to the first clamping block 11. In a specific application, when the device is not mounted on the rail 4, the second clamping block 12 can slide between the first clamping block 11 and the adjusting nut 22, and during mounting, the adjusting nut 22 is firstly dismounted, the second clamping block 12 is removed, then the screw 21 is threaded through the bottom of the rail 4, then the second clamping block 12 is mounted, the second clamping block 12 is slid to a proper position, the rail 4 is clamped into the clamping groove structure 13, then the adjusting nut 22 is mounted, and the adjusting nut 22 is rotated to enable the second clamping block 12 to be continuously close to the rail 4 until the adjusting nut 22 is completely locked, namely the first clamping block 11 and the second clamping block 12 completely clamp the rail 4.

In a specific application, as a possible alternative, the first clamping block 11 can also be slidably connected to the screw rod 21, two ends of the screw rod 21 respectively penetrate through the first clamping block 11 and the second clamping block 12, and meanwhile, the two ends of the screw rod 21 are provided with the adjusting nuts 22, so that when the grounding device is installed, the clamping block component 1 can be adjusted on the inner side of the rail 4 (namely, the middle of the two rails 4) and can also be adjusted on the outer side of the rail 4, the operability of an operator is improved, and the installation or the disassembly of the grounding device is facilitated.

In specific application, the number of the screw rods 21 can be set according to actual requirements, one screw rod can be set, a plurality of screw rods can also be set, and correspondingly, the number of the adjusting nuts 22 can also be selected according to requirements.

Specifically, as shown in fig. 1, the grounding peg 31 is disposed on the top surface 34 of the base portion 3, and the grounding peg 31 includes a grounding post 311 fixedly connected to the base portion 3 and a wing nut 312 screwed to the grounding post 311 and used for locking the ground wire 5. The end of the ground wire 5 is generally a metal collar with a through hole, and referring to fig. 3, when the ground wire 5 is connected, the metal collar is sleeved on the ground post 311, and then the butterfly nut 312 is installed and manually screwed to lock the metal collar on the ground post 311, so that the ground wire 5 and the ground post 311 are stably connected. In particular applications, other standard or non-standard nuts, such as pentagonal or hexagonal nuts, may be used instead of wing nut 312.

In a specific application, as shown in fig. 3, a clamping nut 313 and a spring washer 314 may be sequentially disposed below the wing nut 312, after the ground wire 5 is connected, the clamping nut 313 and the spring washer 314 are located below the ground wire 5, so that the ground wire 5 may be pressed by the wing nut 312 and the clamping nut 313, a sufficient contact area may be provided between the ground wire 5 and the grounding stud 31, stability of connection between the grounding stud 31 and the ground wire 5 is ensured, and the spring washer 314 may prevent the clamping nut 313 from loosening, so that the clamping nut 313 and the wing nut 312 may maintain good connection with the grounding stud 311 even after a long-time vibration, thereby improving reliability of the device.

Specifically, as shown in fig. 1 and 4, a lock seat 32 is integrally formed on the top surface 34 of the base portion 3, and a lock 33 for restricting the rotation of the wing nut 312 or preventing the wing nut 312 from coming off the ground stud 311 is provided on the lock seat 32. When the contact net needs to be grounded, the ground wire 5 is connected with the grounding post 311 and the butterfly nut 312 is used for locking the ground wire 5, and then the rotation of the butterfly nut 312 can be limited or the butterfly nut 312 is limited to be separated from the grounding post 311 through the lock 33, so that the butterfly nut 312 is prevented from being unscrewed or separated from the grounding post 311 by others, and the safety of the device is improved. When the contact net has no grounding requirement, the butterfly nut 312 can be connected with the grounding post 311, and the lock 33 is used for limiting the butterfly nut 312 to be separated from the grounding post 311, so that the loss of the butterfly nut 312 is avoided.

Specifically, as shown in fig. 1, lock 33 includes lock pin 331 capable of extending into the movement travel space of wing nut 312 to limit rotation or axial movement of wing nut 312, and a driving member (not shown) for driving lock pin 331 to extend and retract. When the wing nut 312 rotates on the ground post 311, a cylindrical movement space without a barrier needs to be provided around the ground post 311, and the lock 33 can drive the lock pin 331 to extend into the movement space of the wing nut 312 through the driving member, so as to prevent the wing nut 312 from rotating or prevent the wing nut 312 from separating from the ground post 311, thereby preventing an unauthorized person from unscrewing the wing nut 312 by mistake.

In a specific application, the grounding rod 311 may be perpendicular to the lower end surface of the first clamping block 11, that is, the grounding rod 311 is perpendicular to the placing surface of the grounding device, and the locking pin 331 may be driven by the driving component to perform a telescopic motion perpendicular to the grounding rod 311.

Specifically, as shown in fig. 1, one side of the base part 3 is connected to the insert member 1, the other side of the base part 3 is used for connecting the grounding stud 31, and the lock seat 32 is located between the grounding stud 31 and the insert member 1, and the lock pin 331 of the lock 33 faces the grounding stud 31. The grounding piles 31 are arranged on the outermost side of the base part 3, so that the lock 33 or the rail 4 can be prevented from interfering with the installation connection of the ground wire 5, and the installation by an operator is facilitated.

In this embodiment, as shown in fig. 4, the lock seat 32 and the grounding stud 31 are oppositely disposed along the top surface of the base portion 3 from one side close to the clamping block member to the other side, the lock seat 32 protrudes from the top surface 34 (i.e., the upper side surface) of the base portion 3, the lock seat 32 is in a rectangular parallelepiped structure with a hollow center and a planar upper end surface, threaded holes for installing the lock 33 can be disposed on both sides of the lock seat 32, the lock 33 is locked to the lock seat 32 by fasteners, the protruding lock seat 32 can make the height of the lock 33 higher than the grounding stud 31, so that the lock pin 331 can be right opposite to the wing nut 312 or slightly higher than the wing nut 312, and the lock pin 331 can extend into the movement stroke space of the wing nut 312 when extending out, so as to prevent the wing nut 312 from rotating or limit the wing nut 312 from departing from the grounding stud 311.

Specifically, as shown in fig. 2, a key interface 332 that is unlocked by matching with a key is arranged at the upper end of the lock 33, the key can control the driving part through the key interface 332 to drive the lock pin 331 to extend and retract, and a dust cover 333 that fits the shape of the lock 33 is arranged on the lock 33, and the dust cover 333 can cover the whole lock 33, so as to prevent dust from accumulating at the key interface 332 and preventing the lock from being unlocked, and prevent dust or rainwater from invading into the lock 33, thereby prolonging the service life of the lock 33. The position of dust cover 333 corresponding to lock pin 331 is provided with a notch for lock pin 331 to extend and retract, so that the extending lock pin 331 does not affect the installation of dust cover 333.

Specifically, as shown in fig. 4, the top surface 34 of the base portion 3 is a slope surface with a height gradually decreasing from a side close to the clamping block member 1 to a side away from the clamping block member, that is, the top surface 34 provided with the locking seat 32 is a slope surface, however, in other embodiments, the top surface of the base portion 3 may also be a step surface with a height difference, and the locking seat 32 may be located at a position with a higher height. In this embodiment, the locking seat 32 is located on one side (close to the first clamping block 11) of the base part 3 with a higher height, and the grounding stud 31 is located on the other side (outside of the base part 3) of the base part 3 with a lower height, so that the locking seat 32 is higher than the grounding stud 31, and the locking pin 331 on the locking seat 32 is convenient to interfere with the movement of the butterfly nut 312; and because the lock seat 32 and the ground stud 31 are both connected to the inclined plane, the lock seat 32 may protrude from the inclined plane and the upper end surface of the lock seat 32 is a plane, so as to facilitate mounting the lock 33, meanwhile, a mounting seat 315 for mounting the ground stud 311 and having a planar upper end surface may be disposed on the other side of the base portion 3, the mounting seat 315 may be integrally formed or welded on the lower side of the top surface 34 (inclined plane) of the base portion 3, and the middle portion of the mounting seat 315 has a mounting hole 3151 for inserting and fixing the ground stud 311, and the ground stud 311 may be fixedly connected to the base portion 3 through the mounting hole 3151.

In a specific application, the mounting hole 3151 may be a threaded through hole penetrating through the upper and lower end surfaces of the base portion 3 (i.e., penetrating through the top surface 34 of the base portion 3 and the mounting surface of the base portion 3), and the grounding stud 311 may be a bolt, so that the grounding stud 311 may be screwed into the mounting hole 3151 from the lower end surface of the base portion 3 and protrude from the top surface 34 of the base portion 3.

Specifically, as shown in fig. 2, the bottom surface of the clamping block member 1 is provided with an insulating pad 14, in this embodiment, the insulating pads 14 can be mounted on the bottom surfaces of the first clamping block 11, the second clamping block 12 and the base portion 3, so as to achieve the purpose of insulating the grounding device from the ground, and the insulating pads 14 can be made of a material with good insulating property, such as plastic, rubber, etc., so that when the catenary is not in a grounding requirement, the grounding wire 5 only needs to be detached from the grounding pile 31, and the grounding device does not need to be detached from the rail 4, so as to facilitate the grounding of the rail 4 next time. Referring to fig. 2, in the present embodiment, there are two insulating pads 14, one is mounted on the first clamping block 11 and the base portion 3, the other is mounted on the second clamping block 12, and the two insulating pads 14 have a U-shaped cross section and are fastened to the side surfaces of the first clamping block 11, the second clamping block 12 and the base portion 3 by fasteners.

The embodiment of the present invention further provides a track system, as shown in fig. 3, the track system includes a rail 4 and the above-mentioned cassette grounding device connected to the rail 4. In a specific application, the track system can be applied to a double-track railway, such as a high-speed railway, a subway and the like, when in use, the grounding device can be installed on return rails, of course, if necessary, the same grounding device can also be commonly used on two return rails, namely, the first clamping block 11 is clamped on the outer side of one rail 4, the second clamping block 12 is clamped on the outer side of the other rail 4, and the clamping component 2 is used for clamping the two return rails simultaneously. In a specific application, the track system can also be applied to a monorail, such as a monorail track system used in urban rail transit.

The embodiment of the utility model provides a card formula earthing device and have this card formula earthing device's rail system, through connect ground connection stake 31 in with 1 integrated into one piece's of clamp splice part base portion 3, make ground connection stake 31 and centre gripping more stable in being connected between the clamp splice part 1 of rail 4 to let the electric current on the contact net pass through ground wire 5 and this device conduction to rail 4 (return current rail), even through the produced vibrations of long-time train operation, ground wire 5 still can connect in this device steadily, and compare in prior art, the utility model discloses the spare part of scheme is less, and the structure is more simple, convenient assembling.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims (10)

1. A clip-type earthing device, comprising a clamping block part for clamping a rail, a clamping part for adjusting the clamping block part, and an earthing stud connected with the clamping block part and for connecting an earth wire, characterized in that the clamping block part is integrally formed with a base part for connecting the earthing stud.

2. The card-type grounding device of claim 1, wherein the clamping block member comprises a first clamping block and a second clamping block which are oppositely arranged, a clamping groove structure is arranged on one side of the first clamping block, which is opposite to the second clamping block, and the base portion is connected to one side of the first clamping block, which is opposite to the second clamping block.

3. The card-type grounding device of claim 2, wherein the clamping member comprises a threaded rod connected to the first clamping block and the second clamping block and an adjusting nut threadedly connected to the threaded rod for adjusting a spacing between the first clamping block and the second clamping block.

4. A card-type grounding device as in claim 1, wherein said grounding stud comprises a grounding post fixedly connected to said base portion and a wing nut threadedly connected to said grounding post and adapted to capture said ground wire.

5. The card-type grounding device of claim 4, wherein a lock seat is integrally formed on the top surface of the base portion, and a lock for limiting the rotation of the wing nut or the separation of the wing nut from the grounding post is disposed on the lock seat.

6. The card-type grounding device of claim 5, wherein the lock comprises a locking pin extending into a movement stroke space of the wing nut to limit the rotation or axial movement of the wing nut, and a driving member for driving the locking pin to extend and retract.

7. The card grounding assembly of claim 6, wherein said locking seat and said grounding stud are oppositely disposed along a top surface of said base portion from one side adjacent to said clamp block member to the other side, and said locking seat is higher than said grounding stud, said locking pin being aligned with said grounding stud.

8. The card grounding device of claim 5, wherein one side of said base portion is connected to said block member, the other side of said base portion is used for connecting said grounding stud, and said locking seat is located between said grounding stud and said block member.

9. The card grounding device of claim 5, wherein said lock is provided with a dust cover and/or said clamp block member is provided with an insulating pad on its bottom surface.

10. A card-type grounding device as claimed in any one of claims 1 to 9, wherein the top surface of said base portion is a slope whose height gradually decreases from a side close to said block member to a side remote from said block member.

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