Grounding contact device

Abstract

The embodiment of the invention provides a grounding contact device. The grounding contact device comprises a mounting base; the end, far away from the ground, of the fixed copper bar is mounted on the mounting base; the arc-shaped bending movable copper bar is elastically suspended and connected to the near-ground end of the fixed copper bar through the elastic assembly; the arc-shaped bent movable copper bar comprises arc-shaped parts which are oppositely arranged on the fixed copper bar at intervals, a first bent part which is bent from one end of each arc-shaped part and is in contact with the fixed copper bar, and a second bent part which is bent from the other end of each arc-shaped part and is used for being in contact with a grounding copper bar in the cabinet; wherein the elastic assembly is configured to elastically suspend the arc-shaped bending movable copper bar on a fixed copper bar, so that the second bending part can dynamically and electrically contact with a grounding copper bar in the cabinet in a pressure self-adjusting manner by taking the first bending part as a fulcrum.

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the technical field of medium and high voltage switchgear equipment, and specifically relate to a grounding contact device. Background Art

[0002] The grounding contact device is an important component in the power system to ensure safe grounding, achieving potential balance and fault protection through forced grounding. The existing contact devices have the following problems: 1. Due to installation errors, the alignment with the grounding copper bar or contact inside the cabinet is inaccurate, resulting in severe wear or contact failure; 2. Long-term forced sliding with the copper bar inside the cabinet leads to a decrease in the contact pressure between the two materials (such as copper alloy), generating contact gaps; 3. If the contact between the contact and the copper bar inside the cabinet is not tight, under fault current, the arc energy may weld or vaporize the material, causing surface burning or melting; 4. During transportation or experiments of the equipment, severe vibration may cause excessive force on the contact, resulting in deformation and contact failure; 5. When the contact resistance is uneven or a large current passes through, heat concentration may cause material annealing or melting.

[0003] Therefore, how to solve the above problems has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0004] Embodiments of the present disclosure aim to at least solve one of the technical problems existing in the prior art, and provide a grounding contact device.

[0005] In one aspect of the embodiments of the present disclosure, a grounding contact device is provided, including: An installation base; A fixed copper bar, the remote end of the fixed copper bar is installed on the installation base; An arc-shaped bent movable copper bar and an elastic component, the arc-shaped bent movable copper bar is elastically suspended by the elastic component at the near-ground end of the fixed copper bar, the arc-shaped bent movable copper bar includes an arc portion relatively spaced apart from the fixed copper bar, a first bent portion bent from one end of the arc portion and in contact with the fixed copper bar, and a second bent portion bent from the other end of the arc portion and used for contacting the grounding copper bar inside the cabinet; Wherein, the elastic component is configured to elastically suspend the arc-shaped bent movable copper bar on the fixed copper bar, so that the second bent portion can dynamically electrically contact the grounding copper bar inside the cabinet with pressure self-adjustment taking the first bent portion as a fulcrum.

[0006] Optionally, the installation base includes a horizontal plate corresponding to the fixed copper bar, and a vertical plate bent and extended from one end of the horizontal plate, and a first installation hole is opened on the horizontal plate; a through hole is opened at the position of the fixed copper bar corresponding to the first installation hole; The grounding contact device further comprises a first connecting member, wherein the first connecting member penetrates the through hole and the first mounting hole in sequence to fix the fixed copper busbar to the mounting base.

[0007] Optionally, the fixed copper busbar includes a first fixed copper platform provided with the through hole, a first bent copper portion bent and extended from one end of the first fixed copper platform, a second fixed copper platform extended from one end of the first bent copper portion away from the first fixed copper platform, a second bent copper portion bent and extended from one end of the second fixed copper platform away from the first bent copper portion, and a third fixed copper platform extended from one end of the second bent copper portion away from the second fixed copper platform; Among them, the top surface of the second fixed copper platform is in contact with the first bending portion, and the elastic component is connected to the third fixed copper platform and elastically suspends the arc-shaped bending movable copper bar on the fixed copper bar.

[0008] Optionally, the fixed copper busbar is in a strip shape, and along the length extension direction of the fixed copper busbar from the first fixed copper platform to the third fixed copper platform, the first fixed copper platform, the second fixed copper platform and the third fixed copper platform are connected in sequence with a gradient through the first bent copper portion and the second bent copper portion, and the gradients of the first fixed copper platform, the second fixed copper platform and the third fixed copper platform decrease successively.

[0009] Optionally, the arc-shaped portion includes a horizontal row connected to the first bending portion and arranged relatively spaced apart from the third fixed copper platform, and a vertical row extending from one end of the horizontal row away from the first bending portion toward the third fixed copper platform, and the end of the vertical row away from the horizontal row extends to below the third fixed copper platform; Among them, the first bending portion is bent from one end of the horizontal row away from the vertical row toward a direction away from the second fixed copper platform and abuts against the second fixed copper platform, and the second bending portion is bent from one end of the vertical row away from the horizontal row toward a direction away from the third fixed copper platform.

[0010] Optionally, a silver-plated protrusion abutting against the second fixed copper platform is further provided on the surface of the first bent portion facing the second fixed copper platform.

[0011] Optionally, the fixed copper bar and the arc-shaped bending movable copper bar are both provided with coaxial through-holes, and the elastic component includes a screw rod which is penetrated through the through-holes of the fixed copper bar and the arc-shaped bending movable copper bar in sequence from the side of the fixed copper bar away from the arc-shaped bending movable copper bar, a nut connected to the top of the screw rod, and a first elastic member which is sleeved on the screw rod and elastically compressed between the arc-shaped bending movable copper bar and the nut.

[0012] Optionally, the third fixed copper platform is provided with a movable hole corresponding to the position of the horizontal row. The contact device further includes a movable copper column axially movably connected in the movable hole, and a second elastic member elastically compressed between the third fixed copper platform and the movable copper column. Wherein, the movable copper column elastically supports the horizontal row through the second elastic member.

[0013] Furthermore, it further includes: a limiting shell, which is arranged on the side of the arc-bent movable copper row away from the fixed copper row, and the limiting shell is arranged at a distance from the arc-bent movable copper row and connected to the fixed copper row; a limiting hole is arranged at a position corresponding to the perforation on the limiting shell. Wherein, the screw passes through the limiting hole and is connected to the nut, and the first elastic member is elastically compressed between the limiting shell body and the nut.

[0014] Optionally, the contact device includes two fixed copper rows arranged at a distance, and two arc-bent movable copper rows, wherein the two arc-bent movable copper rows are correspondingly connected to the two fixed copper rows one by one.

[0015] The beneficial effects of the embodiments of the present disclosure include: The present invention adopts the design of arc-bent movable copper row + elastic component, realizes the alignment error compensation between the arc-bent movable copper row and the grounding copper row in the cabinet, and ensures the reliable contact between the arc-bent movable copper row and the grounding copper row in the cabinet. Through the lever-type pressure adjustable grounding structure composed of elastic component + arc-bent movable copper row + fixed copper row, the effective maintenance of the contact pressure between the arc-bent movable copper row and the grounding copper row in the cabinet is realized, and this setting can be applied to vibration working conditions, thereby ensuring the use reliability under vibration working conditions. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a grounding contact device according to an embodiment of the present disclosure; Figure 2 It is a schematic structural diagram of a grounding contact device according to an embodiment of the present disclosure; Figure 3 It is a schematic structural diagram of an arc-bent movable copper row according to an embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of a movable copper column according to an embodiment of the present disclosure.

[0017] In the figure, 1 is the mounting base; 2 is the fixed copper bar; 3 is the arc-bent movable copper bar; 4 is the elastic component; 5 is the first connecting piece; 6 is the protrusion; 7 is the movable copper post; 8 is the second elastic piece; 9 is the limiting shell; 10 is the second connecting piece; 11 is the horizontal plate; 12 is the vertical plate; 21 is the first fixed copper platform; 22 is the first bent copper part; 23 is the second fixed copper platform; 24 is the second bent copper part; 25 is the third fixed copper platform; 31 is the arc part; 32 is the first bent part; 33 is the second bent part; 311 is the horizontal row; 312 is the vertical row; 41 is the screw; 42 is the nut; 43 is the first elastic piece; 44 is the first limiting sleeve; 45 is the second limiting sleeve; 71 is the column body; 72 is the column cap. Detailed implementation manners

[0018] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0019] The following further describes in detail the implementation manners of the present application in conjunction with the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that unless otherwise stated, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship for the sole purpose of facilitating the description of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0020] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0021] As Figures 1-3 shown, a grounding contact device includes a mounting base 1, a fixed copper bar 2, an arc-bent movable copper bar 3, and an elastic component 4. The remote end of the fixed copper bar 2 is mounted on the mounting base 1.

[0022] The arc-bent movable copper bar 3 is elastically suspended and connected to the near-ground end of the fixed copper bar 2 through the elastic component 4. The arc-bent movable copper bar 3 includes an arc portion 31 relatively and spacedly arranged on the fixed copper bar 2, a first bent portion 32 bent from one end of the arc portion 31 and in contact with the fixed copper bar 2, and a second bent portion 33 bent from the other end of the arc portion 31 and used for contacting the grounding copper bar in the cabinet.

[0023] Wherein, the elastic component 4 is configured to elastically suspend the arc-bent movable copper bar 3 on the fixed copper bar 2, so that the second bent portion 33 can dynamically electrically contact the grounding copper bar in the cabinet with pressure self-adjustment taking the first bent portion 32 as a fulcrum. It can be understood that the far-ground end of the fixed copper bar 2 is the end away from the grounding copper bar in the cabinet, and the near-ground end of the fixed copper bar 2 is the end close to the grounding copper bar in the cabinet.

[0024] The present invention adopts the design of the arc-bent movable copper bar 3 + the elastic component 4, realizing the alignment error compensation between the arc-bent movable copper bar 3 and the grounding copper bar in the cabinet, and ensuring the reliable contact between the arc-bent movable copper bar 3 and the grounding copper bar in the cabinet. Through the lever-type pressure-adjustable grounding structure composed of the elastic component 4 + the arc-bent movable copper bar 3 + the fixed copper bar 2, the effective maintenance of the contact pressure between the arc-bent movable copper bar 3 and the grounding copper bar in the cabinet is realized, and this setting can be applied to the vibration working condition, thereby ensuring the use reliability under the vibration working condition.

[0025] In some embodiments, the mounting base 1 includes a cross plate 11 correspondingly arranged with the fixed copper bar 2, and a vertical plate 12 bent and extended from one end of the cross plate 11. A first mounting hole is opened on the cross plate 11, and a through hole is opened at the position of the fixed copper bar 2 corresponding to the first mounting hole.

[0026] The grounding contact device further includes a first connecting piece 5. Wherein, the first connecting piece 5 sequentially passes through the through hole and the first mounting hole to fix the fixed copper bar 2 to the mounting base 1.

[0027] In a specific embodiment, two first mounting holes are opened on the cross plate 11 at intervals, two through holes are correspondingly opened at the position of the fixed copper bar 2 corresponding to the cross plate 11, and the two first mounting holes and the two through holes are in one-to-one correspondence and coaxial. The first connecting pieces 5 are two and respectively pass through the first mounting holes and the through holes to fixedly connect the cross plate 11 and the fixed copper bar 2.

[0028] In some other embodiments, a second mounting hole is further opened on the vertical plate 12, and the contact device further includes a second connecting piece 10. Wherein, the mounting base 1 is fixedly connected to the handcart in the cabinet by using the cooperation and installation of the second connecting piece 10 and the second mounting hole.

[0029] In one embodiment, both the first connecting member 5 and the second connecting member 10 are threaded connecting members.

[0030] Specifically referring to Figure 2 , in some embodiments, the fixed copper busbar 2 includes a first fixed copper platform 21 provided with the through hole, a first bent copper portion 22 bent and extending from one end of the first fixed copper platform 21, a second fixed copper platform 23 extending from one end of the first bent copper portion 22 away from the first fixed copper platform 21, a second bent copper portion 24 bent and extending from one end of the second fixed copper platform 23 away from the first bent copper portion 22, and a third fixed copper platform 25 extending from one end of the second bent copper portion 24 away from the second fixed copper platform 23.

[0031] Wherein, the top surface of the second fixed copper platform 23 abuts against the first bent portion 32, and the elastic component 4 is connected to the third fixed copper platform 25 and elastically suspends the arc-shaped bent movable copper row 3 on the fixed copper busbar 2.

[0032] Specifically, the first bent copper portion 22 is bent and extends from one end of the first fixed copper platform 21 in a direction away from the cross plate 11, the second fixed copper platform 23 extends horizontally from one end of the first bent copper portion 22 away from the first fixed copper platform 21, the second bent copper portion 24 is bent and extends at a right angle from one end of the second fixed copper platform 23 away from the first bent copper portion 22 in a direction away from the cross plate 11, and the third fixed copper platform 25 extends horizontally from one end of the second bent copper portion 24 away from the second fixed copper platform 23.

[0033] In some embodiments, the fixed copper busbar 2 is strip-shaped. Along the length extension direction of the first fixed copper platform 21 to the third fixed copper platform 25 of the fixed copper busbar 2, the first fixed copper platform 21, the second fixed copper platform 23, and the third fixed copper platform 25 are sequentially connected in a gradient manner through the first bent copper portion 22 and the second bent copper portion 24, and the gradients of the first fixed copper platform 21, the second fixed copper platform 23, and the third fixed copper platform 25 decrease successively.

[0034] In the present invention, the second fixed copper platform 23, the second bent copper portion 24, and the third fixed copper platform 25 form a Z-shaped structure. This structure setting can provide sufficient installation and elastic movement space for the movable copper column 7 to ensure its effective contact with the arc-shaped bent movable copper row 3.

[0035] Specifically referring to Figure 3, in some embodiments, the arc portion 31 includes a horizontal row 311 connected to the first bending portion 32 and disposed at a relatively spaced position with respect to the third fixed copper platform 25, and a vertical row 312 that bends and extends from one end of the horizontal row 311 away from the first bending portion 32 toward the direction close to the third fixed copper platform 25. One end of the vertical row 312 away from the horizontal row 311 extends below the third fixed copper platform 25. It can be understood that the horizontal row 311 and the vertical row 312 together form an arc-shaped diversion structure.

[0036] Wherein, the first bending portion 32 is bent from one end of the horizontal row 311 away from the vertical row 312 toward the direction away from the second fixed copper platform 23 and abuts against the second fixed copper platform 23, and the second bending portion 33 is bent from one end of the vertical row 312 away from the horizontal row 311 toward the direction away from the third fixed copper platform 25.

[0037] , in some embodiments, a silver-plated protrusion 6 that abuts against the second fixed copper platform 23 is further convexly provided on the surface of the first bending portion 32 facing the second fixed copper platform 23.

[0038] , in some embodiments, the fixed copper row 2 and the arc-bent movable copper row 3 are both provided with coaxial through holes. The elastic component 4 includes a screw rod 41 that sequentially passes through the through holes of the fixed copper row 2 and the arc-bent movable copper row 3 from the side of the fixed copper row 2 away from the arc-bent movable copper row 3, a nut 42 connected to the top end of the screw rod 41, and a first elastic member 43 sleeved on the screw rod 41 and elastically compressed between the arc-bent movable copper row 3 and the nut 42.

[0039] , in some embodiments, the first elastic member 43 is a spring.

[0040] , in some embodiments, the third fixed copper platform 25 is provided with a movable hole at a position corresponding to the horizontal row 311. The contact device further includes a movable copper column 7 axially movably connected in the movable hole, and a second elastic member 8 elastically compressed between the third fixed copper platform 25 and the movable copper column 7. Wherein, the movable copper column 7 elastically supports the horizontal row 311 through the second elastic member 8.

[0041] Reference Figure 4 , in some embodiments, the movable copper column 7 includes a column body 71 movably connected in the movable hole of the third fixed copper platform 25, and a column cap 72 provided at the top end of the column body 71 and abutting against the arc-bent movable copper row 3. Wherein, the second elastic member 8 is elastically compressed between the column cap 72 and the third fixed copper platform 25.

[0042] Specific reference Figure 1, in some embodiments, the contact device further includes a limiting shell 9, the limiting shell 9 is disposed on a side of the arc-shaped bent movable copper bar 3 away from the fixed copper bar 2, and the limiting shell 9 is spaced from the arc-shaped bent movable copper bar 3 and connected to the fixed copper bar 2. A limiting hole is provided at a position corresponding to the perforation on the limiting shell 9. Wherein, the screw 41 passes through the limiting hole and is connected to the nut 42, and the first elastic member 43 is elastically compressed between the body of the limiting shell 9 and the nut 42.

[0043] In some embodiments, the contact device includes two fixed copper bars 2 disposed at a distance from each other, and two arc-shaped bent movable copper bars 3. Among them, the two arc-shaped bent movable copper bars 3 are respectively connected to the two fixed copper bars 2 in a one-to-one correspondence.

[0044] In some embodiments, the contact device further includes a first limiting sleeve 44 and a second limiting sleeve 45. The first limiting sleeve 44 is sleeved on the screw 41 and clamped between the limiting shell 9 and the bottom end of the first elastic member 43. The second limiting sleeve 45 is sleeved on the screw 41 and clamped between the top end of the first elastic member 43 and the nut 42.

[0045] Specifically, the main object of the present invention is to address the above-mentioned technical deficiencies and propose a grounding contact device with a simple structure, convenient installation, and long service life.

[0046] The upper part of the arc-shaped bent movable copper bar 3 is designed with an elastic component 4, and the arc-shaped bent movable copper bar 3 is elastically suspended and connected to the near-ground end of the fixed copper bar 2, so that the second bent portion 33 of the arc-shaped bent movable copper bar 3 can move up and down during the process of inserting into the grounding copper bar in the cabinet, avoiding misalignment during contact or serious deformation and wear of the second bent portion 33 caused by excessive contact force. In addition, even if there is a positioning error in the second bent portion 33, it can dynamically move up and down and self-adjust the alignment position through the elastic force provided by the first elastic member 43, and this setting makes the wear of the second bent portion 33 smaller. Furthermore, the first elastic member 43 can lock the arc-shaped bent movable copper bar 3 while being able to move up and down and freely adjust itself during the insertion process with the grounding copper bar in the cabinet.

[0047] In the present invention, by adopting the structure of the arc-shaped bent movable copper bar 3, only by ensuring the alignment method of the second bent portion 33 can the alignment accuracy be effectively improved.

[0048] Specifically, by adopting the arc-shaped bent movable copper bar 3, only the second bent portion 33 on one side of the arc-shaped bent movable copper bar 3 needs to be aligned with the grounding copper bar in the cabinet. In this way, not only the mutual force during the sliding contact process between the second bent portion 33 and the grounding copper bar in the cabinet is reduced, but also it is easy to align with the grounding copper bar in the cabinet, and the wear can be reduced during the alignment and insertion process.

[0049] In the present invention, the arc-shaped bending movable copper bus 3 is elastically suspended and connected to the fixed copper bus 2 through the elastic component 4, and the elastic deformation of the elastic component 4 plays a role of giving way and buffering during the process of plugging the arc-shaped bending movable copper bus 3 with the grounding copper bus in the cabinet, thereby preventing the arc-shaped bending movable copper bus 3 from being deformed or broken due to excessive contact force during the process of plugging the arc-shaped bending movable copper bus 3 with the grounding copper bus in the cabinet.

[0050] A silver-plated protrusion 6 solder layer is added to the end of the first bending portion 32 of the arc-shaped movable copper busbar 3. The arc-shaped silver-plated protrusion 6 and the fixed copper busbar 2 are in contact and friction with each other, which can reduce the wear of the arc-shaped movable copper busbar 3 and effectively ensure that the arc-shaped movable copper busbar 3 always maintains contact with the fixed copper busbar 2 during the rotation process with the first bending portion 32 as the fulcrum.

[0051] When the arc-bending movable copper busbar 3 is in contact with the contact copper busbar in the cabinet, the position of the copper busbar in the cabinet is generally higher than the grounding contact on the contact device, ensuring that the two can fully contact even in the case of a large error. However, if the height of the copper busbar in the cabinet is too high, the grounding contact will be deflected too much upward, resulting in a gap between the copper busbar and the grounding contact, causing contact failure.

[0052] The third fixed copper platform 25 of the fixed copper busbar 2 of the present application is provided with a movable copper column 7, and the movable copper column 7 is elastically supported by the second elastic member 8 and the arc-shaped bending movable copper busbar 3, wherein the movable copper column 7 is used to disperse the current on the one hand to prevent the current at the main contact point from being too large, and on the other hand to prevent the arc-shaped bending movable copper busbar 3 from being too low to contact the grounding copper busbar in the cabinet when the grounding copper busbar in the cabinet is too high. In this solution, the second elastic member 8 pushes the movable copper column 7 upward according to the elastic force, so that the movable copper column 7 can abut against the arc-shaped bending movable copper busbar 3 in real time, avoiding poor contact in such extreme cases, and the movable copper column 7 plays a double protection role in the contact process, and the double interlocking guarantees the contact.

[0053] In summary, the beneficial effects of this application include: 1. The arc-shaped bending movable copper bar 3 of this solution adopts a one-side contact mode and is subjected to force on only one side, which can prevent bending and deformation under vibration during transportation.

[0054] 2. The arc-shaped bending movable copper bar 3 is elastically suspended and connected to the fixed copper bar 2. In this movable assembly mode, the arc-shaped bending movable copper bar 3 moves after being stressed, which can avoid deformation or breakage caused by stress extrusion.

[0055] In addition, in the design scheme of using two fixed copper busbars 2 and two arc-shaped bent movable copper busbars 3, the second bent portions 33 corresponding to the two arc-shaped bent movable copper busbars 3 are arranged in parallel, which can increase redundant contact points and disperse current to ensure reliable contact with the grounding copper busbar in the cabinet and prevent excessive current concentration.

[0056] Moreover, the movable copper posts 7 of the fixed copper bar 2 are in contact with the upper arc-shaped bent movable copper bar 3, increasing the contact points and the current flow area, effectively dispersing part of the current and preventing excessive current at the main contact point.

[0057] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A grounding contact device, characterized in that, Comprising: Installation base; Fixed copper bar, the remote end of which is installed on the installation base; Arc-bent movable copper bar and elastic component, the arc-bent movable copper bar is elastically suspended by the elastic component at the near-ground end of the fixed copper bar, the arc-bent movable copper bar includes an arc portion relatively and spacedly arranged on the fixed copper bar, a first bent portion bent from one end of the arc portion and contacting the fixed copper bar, and a second bent portion bent from the other end of the arc portion and used for contacting the in-cabinet grounding copper bar; Wherein, the elastic component is configured to elastically suspend the arc-bent movable copper bar on the fixed copper bar, so that the second bent portion can dynamically electrically contact the in-cabinet grounding copper bar with pressure self-adjustment with the first bent portion as a fulcrum.

2. The grounding contact device according to claim 1, characterized in that, The installation base includes a cross plate corresponding to the fixed copper bar, and a vertical plate bent and extended from one end of the cross plate, and a first installation hole is opened on the cross plate; a through hole is opened at the position of the fixed copper bar corresponding to the first installation hole; The grounding contact device further includes a first connecting piece, wherein the first connecting piece sequentially passes through the through hole and the first installation hole to fix the fixed copper bar on the installation base.

3. The grounding contact device according to claim 2, characterized in that, The fixed copper bar includes a first fixed copper platform provided with the through hole, a first bent copper portion bent and extended from one end of the first fixed copper platform, a second fixed copper platform extended from one end of the first bent copper portion away from the first fixed copper platform, a second bent copper portion bent and extended from one end of the second fixed copper platform away from the first bent copper portion, and a third fixed copper platform extended from one end of the second bent copper portion away from the second fixed copper platform; Wherein, the top surface of the second fixed copper platform abuts against the first bent portion, and the elastic component is connected to the third fixed copper platform and elastically suspends the arc-bent movable copper bar on the fixed copper bar.

4. The grounding contact device according to claim 3, characterized in that, The fixed copper bar is strip-shaped, along the length extension direction of the first fixed copper platform to the third fixed copper platform of the fixed copper bar, the first fixed copper platform, the second fixed copper platform and the third fixed copper platform are sequentially connected in gradient through the first bent copper portion and the second bent copper portion, and the gradients of the first fixed copper platform, the second fixed copper platform and the third fixed copper platform decrease successively.

5. The grounding contact device according to claim 4, characterized in that, The arc portion includes a horizontal row connected to the first bent portion and relatively spaced from the third fixed copper platform, and a vertical row bent and extended from one end of the horizontal row away from the first bent portion towards the direction close to the third fixed copper platform, and one end of the vertical row away from the horizontal row extends below the third fixed copper platform; Wherein, the first bent portion is bent from one end of the horizontal row away from the vertical row towards the direction away from the second fixed copper platform and abuts against the second fixed copper platform, and the second bent portion is bent from one end of the vertical row away from the horizontal row towards the direction away from the third fixed copper platform.

6. The grounding contact device according to claim 3, characterized in that, A silver-plated protrusion abutting against the second fixed copper platform is further convexly provided on the surface of the first bent portion facing the second fixed copper platform.

7. The grounding contact device according to claim 1, characterized in that, The fixed copper bar and the arc-shaped bent movable copper bar are both provided with coaxial through holes. The elastic component includes a screw rod that sequentially passes through the through holes of the fixed copper bar and the arc-shaped bent movable copper bar from the side of the fixed copper bar facing away from the arc-shaped bent movable copper bar, a nut connected to the top end of the screw rod, and a first elastic member sleeved on the screw rod and elastically compressed between the arc-shaped bent movable copper bar and the nut.

8. The grounding contact device according to claim 5, characterized in that, The third fixed copper platform is provided with a movable hole corresponding to the position of the horizontal row. The contact device further includes a movable copper column axially movably connected in the movable hole, and a second elastic member elastically compressed between the third fixed copper platform and the movable copper column. Wherein, the movable copper column elastically supports the horizontal row through the second elastic member.

9. The grounding contact device according to claim 7, characterized in that, Further comprising: A limiting shell, the limiting shell is arranged on the side of the arc-shaped bent movable copper bar facing away from the fixed copper bar, and the limiting shell is arranged at an interval from the arc-shaped bent movable copper bar and is connected to the fixed copper bar; a limiting hole is arranged at a position corresponding to the through hole on the limiting shell. Wherein, the screw rod passes through the limiting hole and is connected to the nut, and the first elastic member is elastically compressed between the limiting shell body and the nut.

10. The grounding contact device according to claim 6, characterized in that, The contact device includes two fixed copper bars arranged at an interval, and two arc-shaped bent movable copper bars, wherein the two arc-shaped bent movable copper bars are respectively connected to the two fixed copper bars in one-to-one correspondence.

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