Anodic oxidation immersion device for photovoltaic aluminum alloy processing

Abstract

The invention relates to the field of aluminum alloy anodic oxidation equipment, and discloses an anodic oxidation immersion device for photovoltaic aluminum alloy machining, the anodic oxidation immersion device comprises an electrolytic tank and a fixing device used for immersing an aluminum alloy plate into the electrolytic tank, the fixing device comprises a hanging beam, and two longitudinal adjusting devices are arranged at the bottom of the hanging beam; the longitudinal adjusting device is driven to rotate through a swing air cylinder fixedly installed on the hanging beam, a clamping device is arranged at the bottom of the longitudinal adjusting device and comprises a conductive clamping plate I and a conductive clamping plate II, and a plurality of supporting transverse shafts which are longitudinally arranged at equal intervals are arranged between the conductive clamping plate I and the conductive clamping plate II. The two clamping devices are driven by the two swing air cylinders to rotate correspondingly, the clamping positions of the aluminum alloy plate clamped by the supporting transverse shaft and the conductive clamping plate I are changed, the clamped part of the aluminum alloy plate can be subjected to anodic oxidation treatment, and therefore the anodic oxidation treatment quality of the aluminum alloy plate is improved.

Description

Technical Field

[0001] This application relates to the field of anodic oxidation equipment for aluminum alloys, and particularly to an anodic oxidation immersion device for processing photovoltaic aluminum alloys. Background Art

[0002] Aluminum alloy is a common aluminum product used in the photovoltaic field, and is usually used in solar photovoltaic brackets, solar power stations, and solar panels. When processing aluminum alloy, anodic oxidation treatment is required, that is, the aluminum alloy is immersed in an electrolyte such as sulfuric acid, and a voltage is applied to form a dense aluminum oxide protective film on the surface of the aluminum alloy, thereby improving its corrosion resistance, hardness, and wear resistance. Among them, aluminum alloy plates are usually used for photovoltaic brackets. When anodic oxidation treatment is performed on the aluminum alloy plate, the aluminum alloy plate is hoisted into the electrolyte in the electrolytic cell by a hoisting device, and is clamped by a clamping device for power supply.

[0003] Since the aluminum alloy plate needs to be kept energized during anodic oxidation, the clamped part and the conductive part of the aluminum alloy plate cannot be in contact with the electrolyte for anodic oxidation treatment, so that there are still untreated parts on the surface of the aluminum alloy plate after anodic oxidation treatment. When the aluminum alloy is applied to a photovoltaic bracket, the parts that have not been anodized for a long time are easily corroded, which affects the overall stability of the photovoltaic bracket. Moreover, the smaller the area of the energized part of the aluminum alloy plate, the easier it is to have poor electrical conductivity, while the larger the energized part, the larger the area that has not been oxidized, and the easier the subsequent aluminum alloy is to be corroded. Summary of the Invention

[0004] This application provides an anodic oxidation immersion device for processing photovoltaic aluminum alloys, which has the advantage that the surface of the aluminum alloy plate can be completely anodized, and is used to solve the problem that in the existing anodic oxidation equipment, when clamping the aluminum alloy and keeping the aluminum alloy plate energized, the energized part of the aluminum alloy plate is not anodized, and a stable oxide film cannot be formed.

[0005] To achieve the above object, this application adopts the following technical solution: An anodic oxidation immersion device for processing photovoltaic aluminum alloys includes an electrolytic cell and a fixing device for immersing the aluminum alloy plate into the electrolytic cell. The fixing device includes a suspension beam, and cables are respectively fixedly installed at both ends of the suspension beam. Two longitudinal adjustment devices are provided at the bottom of the suspension beam, and the two longitudinal adjustment devices are respectively close to both ends of the suspension beam. The longitudinal adjustment device is driven to rotate by a swing cylinder fixedly installed on the suspension beam, and a clamping device is provided at the bottom of the longitudinal adjustment device.

[0006] The clamping device includes a conductive clamping plate I and a conductive clamping plate II, and a number of support cross shafts arranged longitudinally at equal intervals are provided between the conductive clamping plate I and the conductive clamping plate II. After the aluminum alloy plate to be anodized is sequentially placed on the support cross shafts, two swing cylinders are respectively used to drive the two clamping devices to rotate in opposite directions, so that the support cross shafts and the conductive clamping plate I in the two clamping devices clamp the aluminum alloy plate to be anodized, and anodizing treatment is carried out in the electrolytic cell. And by respectively driving the two clamping devices to rotate in the opposite direction relative to the previous rotation direction through the two swing cylinders, the clamping positions of the aluminum alloy plate by the support cross shafts and the conductive clamping plate I are changed. By controlling the rotation of the conductive clamping plate I and the conductive clamping plate II before and after two times, the clamping positions of the aluminum alloy plate are changed, so that the surface of the aluminum alloy plate can be fully anodized, and the problem that the overall service life of the aluminum alloy plate is affected because the clamped part of the aluminum alloy plate is not anodized and is prone to corrosion at the unanodized part when applied to the photovoltaic field, especially the support of outdoor photovoltaic panels, in the later stage is avoided.

[0007] Further, the clamping device further includes two limiting cross plates, the support cross shafts are fixedly arranged between the two limiting cross plates, sliding grooves are formed in both the conductive clamping plate I and the conductive clamping plate II, the number of the sliding grooves is the same as that of the support cross shafts, and the sliding grooves are movably sleeved with the corresponding support cross shafts. Through the arrangement of the support cross shafts, it is convenient to separate and support the aluminum alloy plate to be processed, and it is convenient to change the clamping part of the aluminum alloy plate subsequently. And through the matching design of the sliding grooves and the support cross shafts, so that after the conductive clamping plate I and the conductive clamping plate II clamp the aluminum alloy plate, the aluminum alloy plate can move relative to the support cross shafts and separate, ensuring that the supported part of the aluminum alloy plate can also contact the electrolyte for anodizing treatment, and further improving the quality of the anodizing treatment of the aluminum alloy.

[0008] Further, the outer sides of the conductive clamping plate I and the conductive clamping plate II are respectively movably connected to the inner sides of the two limiting cross plates, and conductive blocks are fixedly installed on the tops of the conductive clamping plate I and the conductive clamping plate II. After one of the conductive blocks is energized through a wire, after the conductive clamping plate I and the conductive clamping plate II clamp the aluminum alloy plate to be processed, the aluminum alloy plate can be energized for anodizing treatment.

[0009] Furthermore, the longitudinal adjustment device includes a positioning cross plate fixedly connected to the output rotating shaft of the swing cylinder, and the positioning cross plate is movably connected to the bottom of the hanging beam. Positioning vertical plates are fixedly installed at both ends of the positioning cross plate, and the two positioning vertical plates are respectively fixedly connected to the two limiting cross plates. A hydraulic cylinder for driving the conductive clamping plate I and the conductive clamping plate II to longitudinally move relative to the limiting cross plate is provided between the two longitudinal adjustment devices. Through the setting of the swing cylinder, the rotation angles of the conductive clamping plate I and the conductive clamping plate II can be accurately controlled, so as to form a stable clamping state for the aluminum alloy plate, make the power-on state stable during the anodic oxidation of the aluminum alloy plate, and thus ensure the quality of the anodic oxidation treatment of the aluminum alloy plate.

[0010] Furthermore, a limiting plate is fixedly installed between the two positioning vertical plates, the hydraulic cylinder is fixedly installed on the limiting plate, the piston shaft of the hydraulic cylinder extends below the limiting plate and is fixedly connected with a linkage rod, the bottom end of the linkage rod is fixedly connected with a linkage shaft, the bottom end of the linkage shaft is fixedly connected with a coupling sleeve, the bottom end of the coupling sleeve is fixedly connected with a slider, and the conductive block is fixedly connected with the slider.

[0011] Furthermore, grooves adapted to the two positioning vertical plates are respectively formed in the middle of both ends of the slider to ensure that the slider can stably move longitudinally along the two positioning vertical plates.

[0012] Furthermore, the positioning vertical plates, the slider and the linkage rod are all made of insulating materials. Through the connection setting of the insulating positioning vertical plates, the slider and the linkage rod, while driving the conductive clamping plate I and the conductive clamping plate II to drive the aluminum alloy plate to longitudinally move relative to the limiting cross plate, it can also avoid the problem of the structures such as the hydraulic cylinder and the swing cylinder used for driving being electrified and malfunctioning, ensuring that only the conductive clamping plates, the conductive blocks and the aluminum alloy plate in the electrolyte tank are in the electrified state during the anodic oxidation of the aluminum alloy, and guaranteeing the overall safety of the equipment.

[0013] Furthermore, the structures of the conductive clamping plate I and the conductive clamping plate II are exactly the same, and both ends of the opposite sides of the conductive clamping plate I and the conductive clamping plate II are designed as smooth inclined surfaces. When the output rotating shaft of the swing cylinder is driven to drive the longitudinal adjustment device and the clamping device as a whole to rotate, the inclined surfaces of the conductive clamping plate I and the conductive clamping plate II can just completely fit the side surfaces of the aluminum alloy plate, ensuring the stable clamping of the aluminum alloy plate and also guaranteeing good conductivity between the aluminum alloy plate and the two clamping plates, and improving the anodic oxidation quality of the aluminum alloy plate.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. An anodic oxidation immersion device for photovoltaic aluminum alloy processing provided by the present application. By setting two clamping devices including a support cross-axis and a conductive clamping plate I, and the two clamping devices are respectively driven to rotate by two swing cylinders. The aluminum alloy plate to be anodized is placed between the two clamping devices. The two swing cylinders respectively drive the two clamping devices to rotate in opposite directions, so that the support cross-axis and the conductive clamping plate I in the two clamping devices clamp the aluminum alloy to be anodized, and anodic oxidation treatment is carried out in the electrolytic cell. And by driving the two clamping devices to rotate in the opposite direction relative to the previous rotation direction respectively through the two swing cylinders, the clamping position of the aluminum alloy plate by the support cross-axis and the conductive clamping plate I is changed, so that the previously clamped part of the aluminum alloy plate can also be subjected to anodic oxidation treatment, thereby improving the processing quality of the aluminum alloy plate. Compared with the existing anodic oxidation equipment for aluminum alloy processing, it avoids the problem that the clamped and electrified part of the aluminum alloy plate cannot contact the electrolyte in the electrolytic cell for anodic oxidation reaction, resulting in reduced corrosion resistance due to the inability to form an oxide film at the clamped part of the aluminum alloy plate.

[0016] 2. An anodic oxidation immersion device for photovoltaic aluminum alloy processing provided by the present application. By setting two groups of conductive clamping plates I and conductive clamping plates II to rotate in opposite directions to clamp the aluminum alloy plate, and cooperating with the smooth inclined surface design at both opposite ends of the conductive clamping plate I and the conductive clamping plate II, the area where the conductive clamping plate I and the conductive clamping plate II can fit to the side of the aluminum alloy plate can be set to an appropriate size. And while ensuring that the surface of the aluminum alloy plate can be completely subjected to anodic oxidation treatment, it is ensured that the current can freely pass through the clamping parts of the conductive block, the conductive clamping plate I, the conductive clamping plate II and the aluminum alloy plate, thereby avoiding the problem of poor conductivity due to too small contact area and the problem of too large area where the aluminum alloy plate cannot form an oxide film due to too large contact area, and further improving the anodic oxidation quality of the aluminum alloy plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts:

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 is Figure 1 the top view of;

[0020] Figure 3 is Figure 1 the structural connection schematic diagram between the hanging beam and the clamping device in;

[0021] Figure 4 One of the longitudinal adjustment devices and the clamping device in Figure 3 Structural diagram;

[0022] Figure 5 One of the Figure 4 Schematic structural diagram of the longitudinal adjustment device in

[0023] Figure 6 One of the Figure 4 Overall structural schematic diagram of the limit horizontal plate and the support horizontal axis in

[0024] Figure 7 One of the Figure 4 Schematic connection structure diagram of two conductive clamping plates and a conductive block in

[0025] Figure 8 One of the Figure 4 Top view of two conductive clamping plates in

[0026] Figure 9 Schematic structural diagram of an aluminum alloy plate to be processed in a clamped state in this application;

[0027] Figure 10 Schematic structural diagram of the aluminum alloy plate to be processed in another clamped state in this application.

[0028] In the figure: 1, electrolytic cell; 2, suspension beam; 3, cable; 4, swing cylinder; 5, longitudinal adjustment device; 51, positioning horizontal plate; 52, positioning vertical plate; 53, slider; 54, coupling sleeve; 55, limiting plate; 56, hydraulic cylinder; 57, linkage rod; 58, linkage shaft; 6, clamping device; 61, limit horizontal plate; 62, conductive block; 63, support horizontal axis; 64, conductive clamping plate I; 65, conductive clamping plate II; 66, chute. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1 - 2, An anodic oxidation immersion device for processing photovoltaic aluminum alloy, comprising an electrolytic cell 1 and a fixing device for immersing an aluminum alloy plate into the electrolyte in the electrolytic cell 1 for anodic oxidation. The fixing device includes a suspension beam 2. Cables 3 are respectively fixedly installed at both ends of the suspension beam 2. The tops of the two cables 3 are connected to a hoisting device (the hoisting device that controls the lifting of the suspension beam 2 through the cables 3 is a prior art. Since the inventive point of this application is not to solve the lifting problem, it will not be elaborated here and the hoisting device is not shown in the figure). The hoisting device controls the lifting of the suspension beam 2 through the cables 3. Two swing cylinders 4 are fixedly installed at the top of the suspension beam 2. The two swing cylinders 4 are respectively close to both ends of the suspension beam 2. The output rotating shafts of the two swing cylinders 4 respectively extend below the suspension beam 2 and are fixedly installed with longitudinal adjustment devices 5. The bottoms of the two longitudinal adjustment devices 5 are respectively fixedly installed with clamping devices 6. The aluminum alloy plate is placed between the two clamping devices 6, carried by the two clamping devices 6, and immersed into the electrolyte in the electrolytic cell 1 as the suspension beam 2 moves downward.

[0031] Please refer to Figures 3 - 5 , The longitudinal adjustment device 5 includes a positioning cross plate 51 fixedly connected to the output rotating shaft of the swing cylinder 4. The top of the positioning cross plate 51 is movably connected to the bottom of the suspension beam 2. Positioning vertical plates 52 are respectively fixedly installed at both ends of the positioning cross plate 51. A slider 53 is movably installed between the two positioning vertical plates 52. The slider 53 is close to the bottom ends of the positioning vertical plates 52, and grooves adapted to the two positioning vertical plates 52 are respectively formed in the middle parts of both ends of the slider 53 to ensure that the slider 53 can stably move along the two positioning vertical plates 52. A coupling sleeve 54 is fixedly installed at the top of the slider 53. A limiting plate 55 located above the coupling sleeve 54 is fixedly installed between the two positioning vertical plates 52. A hydraulic cylinder 56 is fixedly installed at the top of the limiting plate 55. The piston shaft of the hydraulic cylinder 56 extends below the limiting plate 55 and is fixedly connected to a linkage rod 57. The bottom end of the linkage rod 57 is fixedly connected to a linkage shaft 58. The bottom end of the linkage shaft 58 is fixedly connected to the coupling sleeve 54. The clamping device 6 is fixedly installed at the bottom of the slider 53. By driving the output rotating shaft of the swing cylinder 4 to drive the positioning cross plate 51 to rotate, the longitudinal adjustment device 5 as a whole can be driven to rotate, and the setting of the swing cylinder 4 facilitates accurate control of the rotation angle. The hydraulic cylinder 56 is used to drive the piston shaft to drive the linkage rod 57 to move longitudinally, thereby driving the clamping device 6 to move longitudinally.

[0032] Please refer to Figure 4 , Figure 6 and Figure 7, the clamping device 6 includes two limiting cross plates 61 and a conductive block 62. The two limiting cross plates 61 are respectively fixedly installed at the bottom ends of the two positioning vertical plates 52, and the conductive block 62 is fixedly installed at the bottom end of the slider 53. A number of support cross shafts 63 arranged longitudinally at equal intervals are fixedly arranged between the two limiting cross plates 61, and the number of the support cross shafts 63 is not less than two. On both sides of the bottom of the conductive block 62, there are respectively a conductive clamping plate I 64 and a conductive clamping plate II 65, and the outer side walls of the conductive clamping plate I 64 and the conductive clamping plate II 65 are respectively movably connected to the inner side walls of the two limiting cross plates 61. The conductive clamping plate I 64 and the conductive clamping plate II 65 are both provided with chutes 66 having the same number and being adapted to the support cross shafts 63. One of the conductive blocks 62 is electrically connected to a wire, and this wire can be wound around the outside of the clamping device 6 and the longitudinal adjustment device 5, and the wire is electrically connected to the negative wire on the side far from the hanging beam 2 in the electrolytic cell 1 in the same circuit.

[0033] Please refer to Figure 4 and Figure 8 , the structures of the conductive clamping plate I 64 and the conductive clamping plate II 65 are completely the same, and both ends of the opposite sides of the conductive clamping plate I 64 and the conductive clamping plate II 65 are designed as smooth inclined surfaces. When the output rotating shaft drives the longitudinal adjustment device 5 and the clamping device 6 to rotate integrally through the swing cylinder 4, so that the inclined surfaces of the conductive clamping plate I 64 and the conductive clamping plate II 65 can exactly fit the side surface of the aluminum alloy plate, while ensuring the stable clamping of the aluminum alloy plate, it also ensures good electrical conductivity between the aluminum alloy plate and the two clamping plates, improving the anodic oxidation quality of the aluminum alloy plate.

[0034] During use, the aluminum alloy plate is sequentially placed on the support cross shafts 63 in the two clamping devices 6 at both ends of the hanging beam 2. The two swing cylinders 4 respectively drive the output rotating shafts to rotate in opposite directions, driving the longitudinal adjustment device 5 and the clamping device 6 to rotate integrally, so that the two clamping devices 6 can clamp the aluminum alloy plate, that is, in the state as shown in Figure 9 , to ensure that the aluminum alloy plate can maintain a stable energized state subsequently. When controlling the hanging beam 2 to descend, the longitudinal adjustment device 5 and the clamping device 6 integrally drive the aluminum alloy plate to be immersed in the electrolyte in the electrolytic cell 1 for anodic oxidation treatment. Then, the two swing cylinders 4 respectively drive the output rotating shafts to continue to rotate, and this time the rotation directions of the output rotating shafts of the two swing cylinders 4 driving the longitudinal adjustment device 5 and the clamping device 6 are opposite to the rotation directions of the longitudinal adjustment device 5 and the clamping device 6 in the previous time, so that the two clamping devices 6 clamp the aluminum alloy plate as shown in Figure 10Clamp the aluminum alloy plate in the shown state, change the position of the aluminum alloy plate clamped by the two clamping plates, so as to keep the aluminum alloy plate energized for anodic oxidation. At the same time, the problem that the clamped part of the aluminum alloy plate cannot be anodized is solved. And the piston shaft is driven by the hydraulic cylinder 56 to drive the conductive block 62, the conductive clamping plate I 64, the conductive clamping plate II 65, and the aluminum alloy plate as a whole to move longitudinally relative to the limit cross plate 61 and the support cross shaft 63, so that the part of the aluminum alloy plate supported by the support cross shaft 63 can also contact the electrolyte for anodic oxidation, further improving the overall oxidation treatment quality of the aluminum alloy plate.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anodic oxidation immersion device for photovoltaic aluminum alloy processing, characterized in that: The invention comprises an electrolytic cell (1) and a fixing device for immersing an aluminum alloy plate into the electrolytic cell (1), wherein the fixing device comprises a suspension beam (2), cables (3) are fixedly mounted at both ends of the suspension beam (2), two longitudinal adjustment devices (5) are arranged at the bottom of the suspension beam (2), the two longitudinal adjustment devices (5) are respectively close to the two ends of the suspension beam (2), and the longitudinal adjustment devices (5) are driven to rotate by a swing cylinder (4) fixedly mounted on the suspension beam (2), and a clamping device (6) is arranged at the bottom of the longitudinal adjustment device (5); The clamping device (6) comprises a conductive clamping plate I (64) and a conductive clamping plate II (65), and a plurality of equidistantly arranged longitudinal support transverse shafts (63) are provided between the conductive clamping plate I (64) and the conductive clamping plate II (65). After the aluminum alloy plates to be anodized are placed on the support transverse shafts (63) in turn, the two clamping devices (6) are driven by two swing cylinders (4) to rotate in opposite directions to each other, so that the support transverse shafts (63) and the conductive clamping plate I (64) in the two clamping devices (6) clamp the aluminum alloy to be anodized, and anodization treatment is performed in the electrolytic cell (1). The two swing cylinders (4) drive the two clamping devices (6) to rotate in the opposite direction relative to the previous rotation direction, so as to change the clamping position of the aluminum alloy plate by the support transverse shaft (63) and the conductive clamping plate I (64).

2. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 1 is characterized in that: The clamping device (6) further comprises two limiting transverse plates (61), the supporting transverse axis (63) being fixedly arranged between the two limiting transverse plates (61), the conductive clamping plate I (64) and the conductive clamping plate II (65) being both provided with sliding grooves (66), the number of the sliding grooves (66) being the same as the number of the supporting transverse axis (63), and the sliding grooves (66) being movably sleeved with the corresponding supporting transverse axis (63).

3. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 2 is characterized in that: The outer sides of the conductive clamping plate I (64) and the conductive clamping plate II (65) are respectively movably connected to the inner sides of the two limit horizontal plates (61), and the tops of the conductive clamping plate I (64) and the conductive clamping plate II (65) are fixedly mounted with conductive blocks (62).

4. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 2 is characterized in that: The longitudinal adjustment device (5) comprises a positioning transverse plate (51) fixedly connected to the output shaft of the swing cylinder (4), and the positioning transverse plate (51) is movably connected to the bottom of the suspension beam (2), and positioning vertical plates (52) are respectively fixedly installed at both ends of the positioning transverse plate (51), and the two positioning vertical plates (52) are respectively fixedly connected to two limit transverse plates (61), and a hydraulic cylinder (56) is provided between the two longitudinal adjustment devices (5) for driving the conductive clamping plate I (64) and the conductive clamping plate II (65) to move longitudinally relative to the limit transverse plate (61).

5. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 4 is characterized in that: A limiting plate (55) is fixedly installed between the two positioning vertical plates (52), the hydraulic cylinder (56) is fixedly installed on the limiting plate (55), the piston shaft of the hydraulic cylinder (56) extends to the bottom of the limiting plate (55) and is fixedly connected to a linkage rod (57), the bottom end of the linkage rod (57) is fixedly connected to a linkage shaft (58), the bottom end of the linkage shaft (58) is fixedly connected to a coupling sleeve (54), the bottom end of the coupling sleeve (54) is fixedly connected to a slider (53), and the conductive block (62) is fixedly connected to the slider (53).

6. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 5, characterized in that: Grooves matching the two positioning vertical plates (52) are respectively formed in the middle of the two ends of the sliding block (53).

7. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 5, characterized in that: The positioning vertical plate (52), the sliding block (53) and the linkage rod (57) are all made of insulating materials.

8. The anodizing immersion device for photovoltaic aluminum alloy processing according to claim 1, characterized in that: The structures of the conductive clamping plate I (64) and the conductive clamping plate II (65) are completely the same, and both ends of the conductive clamping plate I (64) and the conductive clamping plate II (65) facing each other are designed as smooth inclined surfaces.

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