Carbon brush assembly and automatic battery replacing device with same

Abstract

The utility model discloses a carbon brush assembly, which comprises a mounting rack, a support group, a limiting structure, a first tension spring, a second tension spring and a central shaft, and transversely arranged chutes are symmetrically arranged at two ends of the mounting rack; the support set comprises a first support and a second support, the inner sides of the first support and the second support are movably connected to the mounting frame through first connecting shafts, the first connecting shafts are in sliding fit with the corresponding sliding grooves, and the outer sides of the first support and the second support are rotationally connected with carbon brushes through second connecting shafts respectively. The limiting structure is arranged on the bracket group or the mounting frame and is used for limiting the rotation range of the carbon brush; the first tension springs are connected to the first connecting shafts on the two sides and used for providing acting force for the first connecting shafts on the two sides to be close to each other. The second tension spring is used for providing acting force for closing the second connecting shafts on the two sides; compared with the prior art, a better buffering effect is achieved, and the service life is prevented from being shortened due to frequent hard contact of the carbon brush.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement devices, and in particular to a carbon brush assembly and an automatic battery replacement device having the same. Background Art

[0002] The existing tire crane cable reel photoelectric automatic docking device, such as the Chinese patent application publication number CN107265297A, changes the original design of the tire crane requiring two sets of devices for power and communication by centrally installing the photoelectric automatic docking in a finger-holding plug and socket box. It can not only realize electrical connection, but also automatically dock optical fibers simultaneously. When power needs to be replaced, the tire crane uses a manipulator to clamp the plug box and automatically dock the plug box with the socket box, and automatically replaces the power by docking the conductive sheet in the plug box with the carbon brush assembly in the socket box. However, when the plug box is inserted for docking, the conductive plate and the carbon brush in the plug box will be in rigid contact or even collide, thus affecting the service life of the carbon brush. On the other hand, sometimes the conductive plate or the carbon brush is tilted, resulting in different contact areas between the carbon brushes on both sides and the corresponding conductive plates, resulting in unstable voltage. For this reason, technicians install springs between the carbon brush and the carbon brush mounting frame in the socket box to play a certain buffering role. However, due to the small compression of the spring, the expansion and contraction of the carbon brush is limited, so it will still be in hard contact with the conductive plate. At the same time, there is still the problem of the size of the contact surface between the two carbon brushes and the conductive plate, so improvement is still needed. Summary of the invention

[0003] The purpose of the utility model is to provide a carbon brush assembly and an automatic power replacement device having the same. By arranging a telescopic device between the mounting frame and the carbon brush, the utility model has a better buffering effect than the prior art, and prevents the carbon brush from being frequently hard-contacted and thus shortening its service life.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a carbon brush assembly, including

[0005] The mounting frame has symmetrically arranged horizontal slide grooves at both ends;

[0006] The bracket group includes a first bracket and a second bracket, wherein the inner sides of the first bracket and the second bracket are movably connected to the mounting frame through a first connecting shaft, the first connecting shaft is slidably matched with the corresponding slide groove, and the outer sides of the first bracket and the second bracket are rotatably connected to carbon brushes through the second connecting shaft;

[0007] The limiting structure is arranged on the bracket group or the mounting frame to limit the range of rotation of the carbon brush;

[0008] A first tension spring, connected to the first connecting shafts on both sides, for providing a force for the first connecting shafts on both sides to move closer to each other;

[0009] The second tension spring is used to provide a force for the second connecting shafts on both sides to move closer to each other.

[0010] Furthermore, it also includes a central axis, which is installed at the front side recess where the first bracket and the second bracket intersect through a connecting plate, and the rotation angle of the bracket group is limited by the central axis.

[0011] Furthermore, the bracket group is provided with two groups and is spaced apart on the upper and lower sides of the mounting frame. The inner sides of the two bracket groups are respectively installed on the upper and lower ends of the first connecting shaft. The two first brackets of the two bracket groups are rotatably connected to the corresponding carbon brushes through the second connecting shaft, and the two second brackets of the two bracket groups are rotatably connected to the corresponding carbon brushes through the second connecting shaft.

[0012] Furthermore, the mounting frame is respectively connected to outer sides of the two groups of bracket groups corresponding to the connecting plates, and the two connecting plates are provided with guide grooves arranged along the front-to-back direction. The central axis extends from the upper connecting plate to the lower connecting plate and slides with the guide grooves on the two connecting plates. The two ends of the central axis are respectively provided with limit rings for limiting its vertical movement, and the central axis is arranged between the front side recess at the intersection of the first bracket and the second bracket and the second tension spring.

[0013] Furthermore, a carbon brush mounting frame is fixedly connected to the rear sides of the two carbon brushes, and the carbon brush mounting frame is provided with a sleeve portion sleeved on the outer periphery of the second connecting shaft, and the two ends of the second tension spring are correspondingly connected to the sleeve portions on both sides.

[0014] Furthermore, the second connecting shaft is vertically arranged into a structure that is larger in the middle and smaller at both ends, so that the carbon brush can swing circumferentially relative to the second connecting shaft.

[0015] Furthermore, the limiting structure includes a limiting hook arranged on the outside of the first bracket and the second bracket, and the limiting hook and the carbon brush mounting frame limit the angle of rotation of the carbon brush toward the outside relative to the second connecting shaft through limiting cooperation, and the second tension spring limits the angle of rotation of the carbon brush toward the inside equivalent to the second connecting shaft through limiting cooperation with the carbon brush or the carbon brush mounting frame.

[0016] Furthermore, the first bracket is configured as a straight bar, and the second bracket includes a mounting frame connecting section, an intermediate section and a carbon brush connecting section which are connected in sequence, wherein the carbon brush connecting section of the second bracket is located at the same height as the first bracket, the mounting frame connecting section is lower than the carbon brush connecting section, and the mounting frame connecting section is provided with a pad which fits with the first bracket.

[0017] Furthermore, the expansion and contraction amount of the two carbon brushes toward one side of the mounting frame is A, wherein 10 mm≤A≤20 mm.

[0018] Furthermore, when the battery is replaced and docked, the carbon brushes on both sides are compressed, and the central axis slides backward along the guide groove driven by the second tension spring. At this time, the bracket group shrinks backward under the action of the carbon brushes and the central axis to overcome the elastic force of the first tension spring; when the battery is replaced and docked, the pressure acting on the surface of the carbon brush disappears. At this time, the first connecting shafts on both sides are reset under the action of the first tension spring and drive the support frame to reset and extend.

[0019] Furthermore, an automatic power replacement device includes a socket box, a plug box and a manipulator, wherein the socket box is provided with an insulating plate and the carbon brush assembly as described above, wherein the carbon brush assembly is provided with multiple groups and is vertically spaced and fixed on the insulating plate, and insulating partitions are provided at positions corresponding to adjacent carbon brush assemblies on the insulating plate.

[0020] Furthermore, channels for the carbon brush connecting wires to pass through are respectively provided on both sides of the insulating plate corresponding to each group of carbon brush assemblies.

[0021] Furthermore, the carbon brush assembly is fixedly connected to the insulating plate via a mounting frame.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The carbon brush assembly and the automatic power replacement device having the same of the utility model have a better buffering effect than the prior art by arranging a telescopic device between the mounting frame and the carbon brush, thereby preventing the carbon brush from being frequently hard-contacted and thus shortening its service life;

[0024] 2. The carbon brush assembly of the utility model and the automatic power replacement device having the same are provided with a second tension spring between the two carbon brushes, which can improve the automatic alignment ability of the two carbon brushes and ensure that the two carbon brushes are in better contact with the conductive plate in the plug box. At the same time, the center axis is set at the front side notch where the first bracket and the second bracket intersect. Compared with being set at the intersection of the first bracket and the second bracket, the setting of the center axis makes the two carbon brushes more flexible and have stronger alignment ability, thereby ensuring that the contact surface between the two carbon brushes and the conductive plate is equivalent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first-view structural schematic diagram of the carbon brush assembly of the utility model.

[0026] Figure 2 It is a top view of the carbon brush assembly of the utility model.

[0027] Figure 3 It is a second perspective structural schematic diagram of the carbon brush assembly of the utility model.

[0028] Figure 4 It is a schematic diagram of the installation structure of the second connecting shaft of the utility model.

[0029] Figure 5It is a schematic structural diagram of the socket box of the present utility model.

[0030] Figure 6 It is a front view of the socket box of the present utility model.

[0031] Figure 7 It is a front view of the overall structural plug box of the present utility model.

[0032] In the figure: 10, mounting frame; 11, sliding groove; 20, bracket group; 21, first bracket; 22, second bracket; 221, mounting frame connection section; 222, middle section; 223, carbon brush connection section; 224, spacer block; 23, first connecting shaft; 24, second connecting shaft; 30, carbon brush; 31, carbon brush mounting frame; 32, sleeve part; 40, limit hook; 50, first tension spring; 60, second tension spring; 70, central axis; 71, connecting plate; 72, guide groove; 80, insulating plate; 81, channel; 82, insulating partition; 90, socket box; 100, plug box; 1001, conductive plate. Detailed implementation manners

[0033] The present utility model will be further described below with reference to the accompanying drawings.

[0034] As Figure 1-7 shown, a carbon brush assembly includes a mounting frame 10, a bracket group 20, a limiting structure, a first tension spring 50, a second tension spring 60 and a central axis 70. Transversely arranged sliding grooves 11 are symmetrically provided at both ends of the mounting frame 10. Specifically, the mounting frame 10 has a U-shaped structure, and a hollow part is provided in the middle thereof.

[0035] The bracket group 20 includes a first bracket 21 and a second bracket 22. The inner sides of the first bracket 21 and the second bracket 22 are movably connected to the mounting frame 10 through a first connecting shaft 23. The first connecting shaft 23 is slidably matched with the corresponding sliding groove 11. That is to say, the first connecting shaft 23 can slide horizontally along the sliding groove 11. Limiting parts for restricting its vertical movement are provided at the upper and lower ends of the first connecting shaft 23. Carbon brushes 30 are respectively rotatably connected to the outer sides of the first bracket 21 and the second bracket 22 through a second connecting shaft 24. When the first connecting shaft 23 and the second connecting shaft 24 slide relative to the sliding groove 11, the first bracket 21 and the second bracket 22 will be driven to perform telescopic actions, thereby driving the carbon brushes 30 to telescopically move back and forth. Similarly, when the carbon brushes 30 are pressed, the first bracket 21 and the second bracket 22 will be driven to telescopically move backward, thereby driving the first connecting shaft 23 to slide along the corresponding sliding groove 11.

[0036] The limiting structure is arranged on the bracket group 20 or the mounting frame 10 and is used to limit the rotation range of the carbon brushes 30, that is, to prevent the carbon brushes 30 from rotating excessively outward or flipping excessively inward, thereby affecting the contact area between the carbon brushes 30 and the conductive plate 1001 of the plug box 100.

[0037] The first tension spring 50 is connected to the first connecting shafts 23 on both sides, and is used to provide a force for the first connecting shafts 23 on both sides to move closer to each other. In order to limit the connecting part of the first tension spring 50, the utility model forms an annular cavity in the middle of the first connecting shaft 23, and limits the connecting part of the first tension spring 50 through the end surfaces on both sides of the annular cavity to prevent it from moving up and down. Specifically, limiting sleeves are arranged on the upper and lower sides of the first connecting shaft 23 to form an annular cavity between the two limiting sleeves, or a limiting sleeve is arranged on the outside of the first connecting shaft 23, and an annular cavity is directly formed in the middle of the limiting sleeve.

[0038] The second tension spring 60 is used to provide a force for the second connecting shafts 24 on both sides to move closer to each other. The second tension spring 60 is arranged between the two carbon brushes 30, which can improve the automatic alignment ability of the two carbon brushes 30 and ensure that the two carbon brushes 30 are in better contact with the conductive plate 1001 in the plug box 100. The central axis 70 is installed at the front side recess where the first bracket 21 and the second bracket 22 intersect through the connecting plate 71. The rotation angle of the bracket group 20 is limited by the central axis 70. The central axis 70 is arranged at the front side recess where the first bracket 21 and the second bracket 22 intersect. Compared with being arranged at the intersection of the first bracket 21 and the second bracket 22, the arrangement of the central axis 70 makes the two carbon brushes 30 more flexible and has a stronger alignment ability, thereby ensuring that the contact surface between the two carbon brushes 30 and the conductive plate 1001 is equivalent.

[0039] The carbon brush assembly and the automatic power replacement device having the same of the utility model have a better buffering effect than the prior art by arranging a telescopic device between the mounting frame 10 and the carbon brush 30, thereby preventing the carbon brush 30 from being frequently hard-contacted and thus shortening its service life.

[0040] The bracket group 20 is provided with two groups and is arranged at intervals on the upper and lower sides of the mounting frame 10. The inner sides of the two bracket groups 20 are respectively installed at the upper and lower ends of the first connecting shaft 23. Specifically, the first connecting shaft 23 is a bolt, and the bolt is provided with a smooth rod portion and a threaded portion. The first bracket 21 or the second bracket 22 is installed on the smooth rod portion, and the first bracket 21 and the second bracket 22 are fixed to the mounting frame 10 by the cooperation of the fixing nut and the threaded portion, so that the bracket group 20 can slide laterally along the slide groove 11 through the first connecting shaft 23. Since there is a certain damping after the threaded cooperation between the nut and the threaded portion, that is, the bracket group 20 has a certain damping force when rotating relative to the first connecting shaft 23, the bracket group 20 cannot rotate relative to the first connecting shaft 23 or can only rotate slightly relative to the first connecting shaft 23.

[0041] The two first brackets 21 of the two bracket groups 20 are rotatably connected to the corresponding carbon brushes 30 through the second connecting shaft 24, and the two second brackets 22 of the two bracket groups 20 are rotatably connected to the corresponding carbon brushes 30 through the second connecting shaft 24. By setting up two support groups, the carbon brushes 30 can be supported more stably and the carbon brushes 30 can be supported more stably to be extended and retracted.

[0042] The amount of expansion and contraction of the two carbon brushes 30 toward one side of the mounting frame 10 is A, where 10mm≤A≤20mm. Preferably, the amount of expansion and contraction A of the carbon brushes 30 toward one side of the mounting frame 10 is 15mm. Through this setting, when the battery is replaced and docked, the two carbon brushes 30 can be moved toward the side of the mounting frame 10 after being pressed, and at the same time, the two carbon brushes 30 are separated from each other under the action of the bracket group 20. During this movement, the carbon brushes 30 have sufficient time to automatically calibrate with the conductive sheet docking surface of the plug box 100, ensuring full contact with the conductive sheet, and also effectively ensuring the contact effect with the conductive sheet.

[0043] The mounting frame 10 is respectively connected to the outer sides of the two groups of bracket groups 20, and the two connecting plates 71 are provided with guide grooves 72 arranged along the front and rear directions. The central axis 70 extends from the upper connecting plate 71 to the lower connecting plate 71 and slides with the guide grooves 72 on the two connecting plates 71. The two ends of the central axis 70 are respectively provided with limit rings for limiting its vertical movement. The central axis 70 is arranged between the front side recess where the first bracket 21 and the second bracket 22 intersect and the second tension spring 60. Specifically, the connecting plate 71 is arranged on the upper and lower sides of the mounting frame 10. When the carbon brush 30 is compressed, the second tension spring 60 will drive the central axis 70 to move backward along the guide groove 72. When the bracket group 20 is reset under the action of the first tension spring 50, the end surface of the front side recess where the bracket group 20 intersects will drive the central axis 70 to move forward.

[0044] The rear sides of the two carbon brushes 30 are fixedly connected with a carbon brush mounting bracket 31, and the carbon brush mounting bracket 31 is provided with a sleeve portion 32 sleeved on the outer periphery of the second connecting shaft 24. The two ends of the second tension spring 60 are connected to the sleeve portions 32 on both sides. Further, the limiting structure includes a limiting hook 40 arranged on the outside of the first bracket 21 and the second bracket 22. The limiting hook 40 and the carbon brush mounting bracket 31 are used to limit the angle of rotation of the carbon brush 30 relative to the second connecting shaft 24 toward the outside. The second tension spring 60 limits the angle of rotation of the carbon brush 30 equivalent to the second connecting shaft 24 toward the inside by limiting the carbon brush 30 through the limiting cooperation with the carbon brush 30 or the carbon brush mounting bracket 31.

[0045] The second connecting shaft 24 is arranged in the vertical direction to be a structure with a larger middle and smaller two ends, so that the carbon brush 30 can swing circumferentially relative to the second connecting shaft 24. Specifically, the second connecting shaft 24 includes an upper section, a middle section and a lower section in sequence. The height of the middle section is smaller, and the outer diameter of the middle section is adapted to or slightly smaller than the inner diameter of the sleeve section 32. The outer diameter of the upper section shrinks upward from the side adjacent to the middle section, and the outer diameter of the lower section shrinks downward from the side adjacent to the middle section, so that gaps are left between the upper section and the sleeve section 32 and between the lower section and the sleeve section 32, respectively, so that the carbon brush 30 has a margin for circumferential swing relative to the sleeve section 32, thereby effectively improving the automatic calibration ability of the carbon brush 30 during battery replacement and docking, and ensuring that the two carbon brushes 30 are in full contact with the conductive sheet of the plug box 100.

[0046] The first bracket 21 is configured to be a straight bar type, and the second bracket 22 includes a mounting frame connecting section 221, an intermediate section 222 and a carbon brush connecting section 223 connected in sequence, wherein the carbon brush connecting section 223 of the second bracket 22 is located at the same height as the first bracket 21, the mounting frame connecting section 221 is lower than the carbon brush connecting section 223, and the mounting frame connecting section 221 is provided with a pad 224 that fits with the first bracket 21. The purpose of this setting is to make the battery replacement end faces of the two carbon brushes 30 at the same height, and at the same time can solve the problem of interference when the first bracket 21 and the second bracket 22 are installed.

[0047] When the battery is replaced and docked, the carbon brushes 30 on both sides are compressed, and the center shaft 70 slides backward along the guide groove 72 driven by the second tension spring 60. At this time, the bracket group 20 overcomes the elastic force of the first tension spring 50 and shrinks backward under the action of the carbon brushes 30 and the center shaft 70; when the battery is replaced and docked, the pressure acting on the surface of the carbon brush 30 disappears. At this time, the first connecting shafts 23 on both sides are reset under the action of the first tension spring 50 and drive the support frame to reset and extend.

[0048] An automatic power replacement device includes a socket box 90, a plug box 100 and a manipulator. The socket box 90 is provided with an insulating plate 80 and the carbon brush assembly as described above. The carbon brush assembly is provided with multiple groups and is vertically spaced and fixed on the insulating plate 80. The insulating plate 80 is provided with insulating partitions 82 at positions corresponding to adjacent carbon brush assemblies.

[0049] The insulating plate 80 is provided with channels 81 for the carbon brush 30 connecting wires to pass through on both sides corresponding to each group of carbon brush assemblies. The channel 81 is provided to facilitate the carbon brush 30 connecting wires of the carbon brush 30 assembly to be led out to the outside. Furthermore, the carbon brush assembly is fixedly connected to the insulating plate 80 through the mounting frame 10.

[0050] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A carbon brush assembly, characterized in that: include The mounting frame (10) has symmetrically disposed transverse sliding grooves (11) at both ends; A bracket group (20) comprises a first bracket (21) and a second bracket (22), wherein the inner sides of the first bracket (21) and the second bracket (22) are movably connected to the mounting frame (10) via a first connecting shaft (23), the first connecting shaft (23) is slidably matched with the corresponding slide groove (11), and the outer sides of the first bracket (21) and the second bracket (22) are rotatably connected to carbon brushes (30) via a second connecting shaft (24); A limiting structure, arranged on the bracket group (20) or the mounting frame (10), and used to limit the range of rotation of the carbon brush (30); A first tension spring (50) connected to the first connecting shafts (23) on both sides, and used to provide a force for the first connecting shafts (23) on both sides to move closer to each other; The second tension spring (60) is used to provide a force for the second connecting shafts (24) on both sides to move closer to each other.

2. A carbon brush assembly according to claim 1, characterized in that: It also includes a central axis (70), which is installed at the front notch where the first bracket (21) and the second bracket (22) intersect through a connecting plate (71), and the rotation angle of the bracket group (20) is limited by the central axis (70).

3. A carbon brush assembly according to claim 2, characterized in that: The bracket groups (20) are provided with two groups and are arranged at intervals on the upper and lower sides of the mounting frame (10); the inner sides of the two bracket groups (20) are respectively mounted on the upper and lower ends of the first connecting shaft (23); the two first brackets (21) of the two bracket groups (20) are rotatably connected to the corresponding carbon brushes (30) via the second connecting shaft (24); and the two second brackets (22) of the two bracket groups (20) are rotatably connected to the corresponding carbon brushes (30) via the second connecting shaft (24).

4. A carbon brush assembly according to claim 3, characterized in that: The mounting frame (10) is connected to connecting plates (71) on the outer sides of the two bracket groups (20) respectively. The two connecting plates (71) are provided with guide grooves (72) arranged along the front-back direction. The central axis (70) extends from the upper connecting plate (71) to the lower connecting plate (71) and is slidably matched with the guide grooves (72) on the two connecting plates (71). The two ends of the central axis (70) are respectively provided with limiting rings for limiting its vertical movement. The central axis (70) is arranged between the front side notch where the first bracket (21) and the second bracket (22) intersect and the second tension spring (60).

5. A carbon brush assembly according to claim 2, characterized in that: The rear sides of the two carbon brushes (30) are fixedly connected to a carbon brush mounting frame (31), and the carbon brush mounting frame (31) is provided with a sleeve portion (32) sleeved on the outer periphery of the second connecting shaft (24), and the two ends of the second tension spring (60) are correspondingly connected to the sleeve portions (32) on both sides.

6. A carbon brush assembly according to claim 5, characterized in that: The second connecting shaft (24) is arranged in a vertical direction to have a structure that is larger in the middle and smaller at both ends, so that the carbon brush (30) can swing circumferentially relative to the second connecting shaft (24).

7. A carbon brush assembly according to claim 5, characterized in that: The limiting structure comprises a limiting hook (40) arranged on the outside of the first bracket (21) and the second bracket (22), and the limiting hook (40) and the carbon brush mounting frame (31) are used to limit the angle of the carbon brush (30) rotating outward relative to the second connecting shaft (24). The second tension spring (60) limits the angle of the carbon brush (30) rotating inward relative to the second connecting shaft (24) by limiting the carbon brush (30) and the carbon brush mounting frame (31).

8. A carbon brush assembly according to claim 2, characterized in that: The first bracket (21) is arranged in a straight bar shape, and the second bracket (22) comprises a mounting frame connecting section (221), an intermediate section (222) and a carbon brush connecting section (223) which are connected in sequence, wherein the carbon brush connecting section (223) of the second bracket (22) is located at the same height as the first bracket (21), the mounting frame connecting section (221) is lower than the carbon brush connecting section (223), and the mounting frame connecting section (221) is provided with a pad (224) which is in contact with the first bracket (21).

9. A carbon brush assembly according to claim 2, characterized in that: The expansion and contraction amount of the two carbon brushes (30) toward one side of the mounting frame (10) is A, wherein 10 mm≤A≤20 mm.

10. An automatic battery replacement device, characterized in that: The invention comprises a socket box (90), a plug box (100) and a manipulator (110); an insulating plate (80) and a carbon brush assembly according to any one of claims 1 to 9 are arranged in the socket box (90); a plurality of groups of carbon brush assemblies are arranged and fixed on the insulating plate (80) at vertical intervals; an insulating partition (82) is arranged on the insulating plate (80) at positions corresponding to adjacent carbon brush assemblies.

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