A grounding contact device

Abstract

Embodiments of the present disclosure provide a grounding contact device, including: a mounting base; a fixed copper bar, the remote end of the fixed copper bar being mounted on the mounting base; an arc-shaped bent movable copper bar and an elastic component, the arc-shaped bent movable copper bar being elastically suspended and connected to the near-earth end of the fixed copper bar through the elastic component, the arc-shaped bent movable copper bar including 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 configured to be in contact with 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 with the first bent portion 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 particularly 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, and realizes potential balance and fault protection through forced grounding. The existing contact devices have the following problems:

[0003] 1. Due to installation errors, the alignment with the grounding copper bar or contact inside the cabinet is inaccurate, resulting in serious wear or contact failure; 2. Long-term over-force 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 a contact gap; 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 the transportation or experiment of the equipment, severe vibration may cause the contact to be overstressed and deformed, resulting in contact failure; 5. When the contact resistance is uneven or a large current passes through, heat concentration may cause material annealing or melting.

[0004] Therefore, how to solve the above problems has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0005] 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.

[0006] One aspect of the embodiments of the present disclosure provides a grounding contact device, including:

[0007] An installation base;

[0008] A fixed copper bar, the remote end of the fixed copper bar is installed on the installation base;

[0009] An arc-shaped bent movable copper bar and an elastic component, the arc-shaped bent movable copper bar is elastically suspended to the near-earth end of the fixed copper bar through the elastic component, 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;

[0010] 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.

[0011] Optionally, the mounting 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. The horizontal plate is provided with a first mounting hole; the fixed copper bar is provided with a through hole at a position corresponding to the first mounting hole;

[0012] The grounding contact device further includes a first connecting member. Wherein, the first connecting member sequentially passes through the through hole and the first mounting hole to fix the fixed copper bar to the mounting base.

[0013] Optionally, 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;

[0014] 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-shaped bent movable copper bar on the fixed copper bar.

[0015] Optionally, 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 a gradient manner 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.

[0016] Optionally, the arc-shaped 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 toward the direction close to the third fixed copper platform. One end of the vertical row away from the horizontal row extends below the third fixed copper platform;

[0017] Wherein, the first bent portion is bent and formed from one end of the horizontal row away from the vertical row toward the direction away from the second fixed copper platform and abuts against the second fixed copper platform, and the second bent portion is bent and formed from one end of the vertical row away from the horizontal row toward the direction away from the third fixed copper platform.

[0018] Optionally, 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.

[0019] Optionally, the fixed copper bar and the arc-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-bent movable copper bar from the side of the fixed copper bar facing away from the arc-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-bent movable copper bar and the nut.

[0020] 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.

[0021] Furthermore, it further includes: a limit shell, which is arranged on the side of the arc-bent movable copper bar facing away from the fixed copper bar, and the limit shell is spaced from the arc-bent movable copper bar and connected to the fixed copper bar; a limit hole is arranged at a position corresponding to the through hole on the limit shell. Wherein, the screw rod passes through the limit hole and is connected to the nut, and the first elastic member is elastically compressed between the limit shell and the nut.

[0022] Optionally, the contact device includes two fixed copper bars arranged at intervals, and two arc-bent movable copper bars, wherein the two arc-bent movable copper bars are connected to the two fixed copper bars in one-to-one correspondence.

[0023] The beneficial effects of the embodiments of the present disclosure include:

[0024] The present invention adopts the design of an arc-bent movable copper bar + elastic component, realizes the alignment error compensation between the arc-bent movable copper bar and the cabinet internal grounding copper bar, and ensures the reliable contact between the arc-bent movable copper bar and the cabinet internal grounding copper bar. Through the lever-type pressure adjustable grounding structure composed of an elastic component + an arc-bent movable copper bar + a fixed copper bar, the effective maintenance of the contact pressure between the arc-bent movable copper bar and the cabinet internal grounding copper bar 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

[0025] Figure 1 It is a schematic structural diagram of a grounding contact device according to an embodiment of the present disclosure;

[0026] Figure 2 It is a schematic structural diagram of a grounding contact device according to an embodiment of the present disclosure;

[0027] Figure 3 It is a schematic structural diagram of an arc-bent movable copper bar according to an embodiment of the present disclosure;

[0028] Figure 4 Structural schematic diagram of a movable copper column according to an embodiment of the present disclosure.

[0029] In the figure, 1 is an installation base; 2 is a fixed copper bar; 3 is an arc-bent movable copper bar; 4 is an elastic component; 5 is a first connecting piece; 6 is a protrusion; 7 is a movable copper column; 8 is a second elastic member; 9 is a limiting shell; 10 is a second connecting piece; 11 is a horizontal plate; 12 is a vertical plate; 21 is a first fixed copper platform; 22 is a first bent copper part; 23 is a second fixed copper platform; 24 is a second bent copper part; 25 is a third fixed copper platform; 31 is an arc part; 32 is a first bent part; 33 is a second bent part; 311 is a horizontal row; 312 is a vertical row; 41 is a screw; 42 is a nut; 43 is a first elastic member; 44 is a first limiting sleeve; 45 is a second limiting sleeve; 71 is a column body; 72 is a column cap. Detailed implementation manners

[0030] 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.

[0031] The implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principle 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 specified, 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 convenience of describing 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 understood as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood 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.

[0032] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 situations.

[0033] As Figures 1-3As shown in the figure, a grounding contact device includes an installation 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 installed on the installation base 1.

[0034] 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 disposed relatively and spaced apart from 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.

[0035] Among them, 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 with the first bent portion 32 as a fulcrum. It can be understood that the remote 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.

[0036] The present invention adopts the design of the arc-bent movable copper bar 3 + the elastic component 4 to realize the alignment error compensation between the arc-bent movable copper bar 3 and the grounding copper bar in the cabinet, and ensure 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.

[0037] In some embodiments, the installation base 1 includes a horizontal plate 11 corresponding to the fixed copper bar 2, and a vertical plate 12 bent and extended from one end of the horizontal plate 11. A first installation hole is opened on the horizontal plate 11, and a through hole is opened at the position of the fixed copper bar 2 corresponding to the first installation hole.

[0038] The grounding contact device further includes a first connecting member 5. Among them, the first connecting member 5 sequentially passes through the through hole and the first installation hole to fix the fixed copper bar 2 to the installation base 1.

[0039] In a specific embodiment, two first installation holes are opened on the horizontal plate 11 at intervals, two through holes are correspondingly opened at the position of the fixed copper bar 2 corresponding to the horizontal plate 11, and the two first installation holes and the two through holes are in one-to-one correspondence and coaxial. The first connecting members 5 are two and respectively pass through the first installation hole and the through hole to fixedly connect the horizontal plate 11 and the fixed copper bar 2.

[0040] In some other embodiments, a second mounting hole is further formed in the vertical plate 12, and the contact device further includes a second connecting member 10. Wherein, the mounting base 1 is fixedly connected to the in-cab trolley by the cooperation and installation of the second connecting member 10 and the second mounting hole.

[0041] In one embodiment, both the first connecting member 5 and the second connecting member 10 are threaded connecting members.

[0042] Specifically refer 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.

[0043] 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-bent movable copper busbar 3 on the fixed copper busbar 2.

[0044] 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 horizontal 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 horizontal 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.

[0045] 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.

[0046] 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 can provide sufficient installation and elastic movement space for the movable copper column 7 to ensure its effective contact with the arc-bent movable copper busbar 3.

[0047] Specifically refer toFigure 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 interval from the third fixed copper platform 25, and a vertical row 312 extending and bending from one end of the horizontal row 311 away from the first bending portion 32 toward 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 flow guiding structure.

[0048] Among them, the first bending portion 32 is bent from one end of the horizontal row 311 away from the vertical row 312 in a 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 in a direction away from the third fixed copper platform 25.

[0049] In some embodiments, a silver-plated protrusion 6 abutting 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.

[0050] 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 sequentially passing through the through holes of the fixed copper row 2 and the arc-bent movable copper row 3 from a 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.

[0051] In some embodiments, the first elastic member 43 is a spring.

[0052] 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. Among them, the movable copper column 7 elastically supports the horizontal row 311 through the second elastic member 8.

[0053] 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 disposed at the top end of the column body 71 and abutting against the arc-bent movable copper row 3. Among them, the second elastic member 8 is elastically compressed between the column cap 72 and the third fixed copper platform 25.

[0054] Specific reference Figure 1, in some embodiments, the contact device further includes a limiting shell 9, the limiting shell 9 is arranged on the side of the arc-bent movable copper row 3 away from the fixed copper row 2, and the limiting shell 9 is arranged at an interval with the arc-bent movable copper row 3 and connected to the fixed copper row 2. A limiting hole is arranged at the position corresponding to the perforation on the limiting shell 9. Wherein, the screw rod 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.

[0055] In some embodiments, the contact device includes two fixed copper rows 2 arranged at an interval, and two arc-bent movable copper rows 3, wherein the two arc-bent movable copper rows 3 are connected to the two fixed copper rows 2 in one-to-one correspondence.

[0056] 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 rod 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 rod 41 and clamped between the top end of the first elastic member 43 and the nut 42.

[0057] Specifically, the main purpose 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.

[0058] The upper part of the arc-bent movable copper row 3 adopts the elastic component 4 design, and the arc-bent movable copper row 3 is elastically suspended and connected to the near-ground end of the fixed copper row 2, so that the second bent portion 33 of the arc-bent movable copper row 3 can move up and down during the process of inserting into the grounding copper row 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-bent movable copper row 3 while being able to move up and down and freely adjust itself during the insertion process with the grounding copper row in the cabinet.

[0059] In the present invention, by adopting the structure of the arc-bent movable copper row 3, only by ensuring the alignment method of the second bent portion 33 can the alignment accuracy be effectively improved.

[0060] Specifically, by adopting the arc-bent movable copper row 3, only the second bent portion 33 on one side of the arc-bent movable copper row 3 needs to be aligned with the grounding copper row 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 row in the cabinet is reduced, but also it is easy to align with the grounding copper row in the cabinet, and the wear can be reduced during the alignment and insertion process.

[0061] 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 avoiding excessive contact force during the plugging process of the arc-shaped bending movable copper bus 3 with the grounding copper bus in the cabinet, which may cause the arc-shaped bending movable copper bus 3 to deform or break.

[0062] 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.

[0063] When the arc-shaped bent movable copper busbar 3 is aligned 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.

[0064] The third fixed copper platform 25 of the fixed copper busbar 2 of the present application is provided with a movable copper column 7. The movable copper column 7 is elastically supported by the second elastic member 8 and the arc-shaped movable copper busbar 3. 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. On the other hand, it prevents the arc-shaped 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 positioned 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 movable copper busbar 3 in real time, avoiding poor contact in such extreme situations. The movable copper column 7 plays a double protection role in the contact process, and the double interlocking guarantees contact.

[0065] In summary, the beneficial effects of this application include:

[0066] 1. The arc-shaped bending movable copper busbar 3 of this solution adopts a one-side contact method and is subjected to force on only one side, which can prevent bending and deformation under vibration during transportation.

[0067] 2. The arc-shaped movable copper busbar 3 is elastically suspended and connected to the fixed copper busbar 2. In this movable assembly method, the arc-shaped movable copper busbar 3 moves when subjected to force, thereby avoiding deformation or breakage caused by force extrusion.

[0068] 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.

[0069] Moreover, the movable copper posts 7 of the fixed copper busbar 2 are in contact with the upper arc-shaped bent movable copper busbar 3, increasing the contact points and the current flow area, effectively dispersing part of the current and preventing the current at the main contact point from being too large.

[0070] 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 considered within the protection scope of the present disclosure.

Claims

1. A grounding contact device, characterized in that, include: Install the base; A fixed copper busbar, wherein the distal end of the fixed copper busbar is mounted on the mounting base; An arc-shaped movable copper busbar and an elastic component, wherein the arc-shaped movable copper busbar is elastically suspended and connected to the ground-proximal end of the fixed copper busbar via the elastic component, and the arc-shaped movable copper busbar comprises an arc-shaped portion spaced relatively from the fixed copper busbar, a first bent portion bent from one end of the arc-shaped portion and in contact with the fixed copper busbar, and a second bent portion bent from the other end of the arc-shaped portion and used to contact the grounding copper busbar in the cabinet; The elastic component is configured to elastically suspend the arc-shaped bent movable copper busbar on the fixed copper busbar, so that the second bent portion can use the first bent portion as a fulcrum to self-adjust the pressure and dynamically make electrical contact with the grounding copper busbar in the cabinet; The fixed copper bar and the arc-shaped movable copper bar are both provided with coaxial through-holes, and the elastic component includes a screw rod which sequentially passes through the through-holes of the fixed copper bar and the arc-shaped movable copper bar from a side of the fixed copper bar away from the arc-shaped 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 movable copper bar and the nut; The fixed copper busbar includes a third fixed copper platform, the arc-shaped portion has a horizontal row, and the third fixed copper platform is provided with a movable hole at a position corresponding to the horizontal row. The contact device also includes a movable copper column axially movably connected to 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.

2. The grounding contact device according to claim 1, characterized in that, The mounting base includes a horizontal plate corresponding to the fixed copper busbar, and a vertical plate bent and extended from one end of the horizontal plate, wherein a first mounting hole is formed on the horizontal plate; and a through hole is formed on the fixed copper busbar at a position corresponding to the first mounting hole. The grounding contact device further includes a first connecting member, wherein the first connecting member sequentially penetrates the through hole and the first mounting hole to fix the fixed copper busbar to the mounting base.

3. The grounding contact device according to claim 2, characterized in that, The fixed copper busbar includes a first fixed copper platform provided with the through hole, a first bent copper portion extending from one end of the first fixed copper platform, a second fixed copper platform extending from one end of the first bent copper portion away from the first fixed copper platform, a second bent copper portion extending from one end of the second fixed copper platform away from the first bent copper portion, and a third fixed copper platform extending from one end of the second bent copper portion away from the second fixed copper platform; The top surface of the second fixed copper platform abuts against 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 busbar on the fixed copper busbar.

4. The grounding contact device according to claim 3, characterized in that, The fixed copper busbar is in a strip shape. Along the length extension direction from the first fixed copper platform to the third fixed copper platform of the fixed copper busbar, the first fixed copper platform, the second fixed copper platform and the third fixed copper platform are connected in sequence by 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-shaped portion includes a horizontal row connected to the first bending portion and spaced apart from the third fixed copper platform, and a vertical row extending from an 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.

6. The grounding contact device according to claim 3, wherein, 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.

7. The grounding contact device according to claim 1, characterized in that, Also includes: A limiting shell is provided on the side of the arc-shaped bending movable copper bar away from the fixed copper bar, and the limiting shell is spaced apart from the arc-shaped bending movable copper bar and connected to the fixed copper bar; a limiting hole is provided at a position corresponding to the through-hole of 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 and the nut.

8. The grounding contact device according to claim 6, wherein, The contact device includes two fixed copper bars arranged at intervals, and two arc-shaped bending movable copper bars, wherein the two arc-shaped bending movable copper bars are connected to the two fixed copper bars in a one-to-one correspondence.

Images