Electrode clamping self-adaptive clamping device

Abstract

The utility model relates to an electrode clamping self-adaptive clamping device, which comprises a fixed seat, a clamping part, a driving device and frame bodies, the two frame bodies are connected in a relatively rotating way, the driving device is respectively connected with the two frame bodies and drives the two frame bodies to move relatively, the two frame bodies are respectively and fixedly connected with the fixed seat, and the clamping part is fixedly connected with the fixed seat. The clamping parts and the fixing seats are universally connected through connecting pieces, and the corresponding clamping parts of the two frame bodies are oppositely arranged. The clamping part rotates universally relative to the fixed seat so as to adapt to the graphite electrode with the vertical axis and the front-back axis inclined in angle, and the clamp can be automatically aligned with the graphite electrode under the driving of the driving device, so that the clamping part can be completely attached to the planes of the left side and the right side of the graphite electrode; the graphite electrode is prevented from being damaged due to the fact that the clamping part excessively extrudes the graphite electrode, electric energy loss caused by the fact that the non-fitting contact area is too small is avoided, and the automatic searching function is short in clamping time, high in efficiency and free of manual adjustment.

Description

Technical Field

[0001] The utility model relates to the field of power supply devices for Acheson graphitization furnaces, in particular to an electrode clamping adaptive clamping device. Background Technique

[0002] The Acheson graphitization furnace uses carbon baked products and resistance materials as the furnace core, and passes alternating current to produce artificial graphite products in a resistance furnace. When the current passes through the resistance of the furnace core, electrical energy is converted into heat energy, heating the carbon baked products to a high temperature of 2300-3000 °C to complete the graphitization process and form artificial graphite products. The Chinese name is AC graphitization furnace, which is also habitually called Acheson furnace.

[0003] The Acheson furnace operates intermittently. During a production cycle, it has to go through processes such as furnace charging, power supply, cooling, furnace discharging, and maintenance, which takes a total of 12-15 days, and the power supply is only 3-5 days. Generally, one transformer can be configured with 5-7 furnaces of the same specification to form a furnace group, and a furnace group is a production unit. During production, the transformer operates continuously, and the furnaces operate alternately; usually, one furnace in a furnace group is in the power-on state, and the other several furnaces are in the states of furnace charging, cooling, loading and unloading, or maintenance; after one furnace finishes working, power is supplied to the next furnace.

[0004] At the furnace head and furnace tail of each furnace, multiple rows and columns of rectangular graphite electrodes protrude (as Figure 16 shown), and the electrodes are used for wiring; at both ends of the furnace group, a set of rectangular cross-section busbars (aluminum bars) are suspended and installed, and the transformer supplies power to the furnace group through the busbars. Each furnace group is usually equipped with two Acheson furnace power supply vehicles, which can travel along the rails on the ground at both ends of the furnace group and can stay at the end of any furnace in the furnace group; this power supply vehicle is equivalent to a moving large combined switch, connecting the transformer power supply busbar (the busbar is divided into two types: upper-mounted and lower-mounted) and the graphite electrode of the furnace to supply power to the furnace.

[0005] A busbar clamping mechanism and an electrode clamping mechanism are provided on the power supply vehicle, which can clamp the power supply busbar and the graphite electrode of the furnace respectively; the busbar clamping mechanism and the electrode clamping mechanism are connected by a conductive copper plate or a cable. Due to the masonry error of the Acheson furnace and long-term use, the position of the graphite electrode may change or skew; similarly, the installation error of the busbar relative to the furnace and long-term use will also cause the position of the busbar to change and skew. As Figure 16 shown, Figure 16 in the upper left and upper right corners, the graphite electrodes 9 have changed their positions, and in the lower left and lower right corners, the graphite electrodes 9 have skewed.

[0006] If the contact surface between the electrode clamping mechanism and the electrode does not match, the graphite electrode is prone to breakage under eccentric load, shortening its service life; it will also cause additional power loss due to poor contact. If the contact between the busbar clamping mechanism and the clamping surface of the busbar is poor, it will cause excessive oxidation of the busbar and additional power loss. Therefore, it is required that both the busbar and the electrode clamping mechanisms have a follow-up function that can follow the deflection of the busbar or graphite electrode, so that the clamping mechanism is always in close contact with the busbar and the electrode, and clamps stably and reliably. Summary of the Invention

[0007] The present invention aims to solve the above problems and provides an electrode clamping adaptive clamping device that solves the above problems.

[0008] An electrode clamping adaptive clamping device includes: a fixed seat, a clamping part, a driving device, and a frame body. Two frame bodies are rotatably connected relatively. The driving device is respectively connected to the two frame bodies and drives the two frame bodies to move relatively. The two frame bodies are respectively fixedly connected to the fixed seat. The clamping part and the fixed seat are connected by a universal joint, and the clamping parts corresponding to the two frame bodies are arranged facing each other.

[0009] Furthermore, it also includes a clamp post and a positioning rod. The frame body includes a fixed frame and a driving part. The fixed seat is fixedly installed on the fixed frame. The driving part includes a support arm and a cross arm. The fixed frame is fixedly connected to the support arm. The side of the support arm close to the fixed frame is fixedly connected to the cross arm. The two cross arms are respectively rotatably connected to the same positioning rod. The positioning rod is fixedly connected to the clamp post. The two ends of the driving device are respectively rotatably connected to the end of the support arm away from the fixed frame.

[0010] Furthermore, the driving part further includes a first fixed shaft. The first fixed shaft is fixedly connected to the support arm. The driving device is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The piston rod and the cylinder body of the driving device are respectively hinged to different first fixed shafts.

[0011] Furthermore, the frame body includes a fixed frame and a driving part. The driving part includes a connecting arm, a support rod, a second fixed shaft and a connecting shaft. The fixed frames on both sides are respectively hinged and installed at both ends of the support rod. A second fixed shaft is fixedly installed between the two support rods. The center of the second fixed shaft is fixedly connected to the cylinder body of the driving device. The driving device is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The end of the fixed frame away from the clamping part is hinged to the connecting arm. The connecting shaft passes through the two connecting arms, and the two connecting arms are rotatably connected through the connecting shaft. The piston rod of the driving device is hinged to the connecting shaft.

[0012] Further, the frame body includes a fixed frame and a driving part. The driving part includes a connecting rod, a rotating arm, and a rotating shaft. The rotating arm is fixedly connected to one end of the fixed frame away from the clamping part. The connecting rod passes through through holes at one ends of the left and right rotating arms away from the fixed frame, and the diameter of the connecting rod is smaller than the inner diameter of the through holes. The rotating arm is rotatably connected to the rotating shaft.

[0013] Further, the connecting piece includes a first spherical part and a second spherical part. The first spherical part is fixed relative to the fixed seat. The first spherical part forms a first spherical surface. The second spherical part is fixed relative to the clamping part. The second spherical part forms a second spherical surface. The first spherical surface and the second spherical surface are in contact with each other.

[0014] Further, a limiting piece is further included. The limiting piece is used to limit the second spherical part from separating from the contact with the first spherical part.

[0015] Further, the limiting piece includes a nut, a gasket, an elastic element, and a threaded part. The threaded part passes through the fixed seat and is threadedly connected to the second spherical part. One end of the elastic element is in contact with the fixed seat or the first spherical part, and the other end is in contact with the gasket. The nut is threadedly connected to the threaded part and is in contact with one end of the gasket away from the elastic element.

[0016] Further, the clamping part includes an electrode plate and a water tank. The electrode plate and the water tank are fixedly connected. The second spherical part is fixedly connected to the water tank.

[0017] Further, a lubricating oil cup is further included. The fixed seat forms a first through hole. The first spherical part forms a second through hole. The first through hole and the second through hole are communicated with each other. The lubricating oil cup is inserted into the first through hole and is fixedly connected to the fixed seat.

[0018] The utility model has the following advantages:

[0019] 1. The two clamping plates can move in the left and right directions to adapt to the graphite electrode with position changes in the left and right directions, so that both sides of the graphite electrode are in contact with the clamping part and the forces on both sides are uniform, solving the problems of non - contact on the other side and excessive force on the other side caused by the position offset of the graphite electrode.

[0020] 2. The clamping part rotates in all directions relative to the fixed seat to adapt to the graphite electrode with angular deviations of the vertical axis and the front - rear axis. The clamp can automatically align with the graphite electrode under the drive of the driving device, enabling the clamping part to completely fit the left and right flat surfaces of the graphite electrode, avoiding damage to the graphite electrode caused by excessive extrusion of the clamping part and avoiding power loss caused by too small non - fitting contact area. The automatic alignment function takes less time and has high efficiency during clamping and does not require manual adjustment;

[0021] 3. Only one positioning rod is used as a rotating shaft to hinge the two frames and fix them to the clamp strut. There is no need for the drive rod in the prior art. Compared with the prior art, it has a simple structure, more flexible automatic alignment, simpler manufacturing, and lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0023] Figure 1 : Three-dimensional structure schematic diagram of the clamp;

[0024] Figure 2 : Figure 1 Three-dimensional structure schematic diagram of a part of the clamp;

[0025] Figure 3 : Figure 1 Front view structure schematic diagram of the clamp;

[0026] Figure 4 : Three-dimensional exploded structure schematic diagram of the clamping plate;

[0027] Figure 5 : Figure 4 Three-dimensional sectional structure schematic diagram of a part of the clamping plate;

[0028] Figure 6 : Figure 4 Three-dimensional structure schematic diagram of a part of the clamping plate;

[0029] Figure 7 : Figure 6 Sectional three-dimensional structure schematic diagram of...;

[0030] Figure 8 : Figure 7 Partial enlarged view of part A in...;

[0031] Figure 9 : First top view structure schematic diagram of the clamp;

[0032] Figure 10 : Second top view structure schematic diagram of the clamp;

[0033] Figure 11 : Three-dimensional structure schematic diagram of the clamping plate;

[0034] Figure 12 : Figure 11 Three-dimensional sectional structure schematic diagram of the clamping plate;

[0035] Figure 13 : Figure 12 Partial enlarged view at B in the middle;

[0036] Figure 14 : Figure 11 Schematic diagram of the partial sectional structure of the clamping plate;

[0037] Figure 15 :Schematic three-dimensional structure diagram of the clamp assembly;

[0038] Figure 16 :Front view structure schematic diagram of the graphite electrode. Specific implementation manner

[0039] The present utility model will be further described below in conjunction with the accompanying drawings and examples:

[0040] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly defined 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 a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model.

[0043] As Figures 1 to 15 shown, an electrode clamping adaptive clamping device includes: a fixed seat 2, a clamping portion 3, a driving device 5, a clamp pillar 6, and a frame body. The two frame bodies are relatively rotatably connected. The driving device 5 is respectively connected to the two frame bodies and drives the two frame bodies to move relatively. The two frame bodies are respectively fixedly connected to the fixed seat 2. The clamping portion 3 and the fixed seat 2 are universally connected by a connecting member. The clamping portions 3 corresponding to the two frame bodies are arranged facing each other.

[0044] Optionally, it further includes a clamp support column 6 and a positioning rod 421. The frame body includes a fixed frame 1 and a driving part 4. The fixed seat 2 is fixedly installed on the fixed frame 1. The driving part 4 includes a support arm 41 and a cross arm 42. The fixed frame 1 is fixedly connected to the support arm 41. The side surface of the support arm 41 near one end of the fixed frame 1 is fixedly connected to the cross arm 42. The two cross arms 42 are respectively rotatably connected to the same positioning rod 421. The positioning rod 421 is fixedly connected to the clamp support column 6. The two ends of the driving device 5 are respectively rotatably connected to the ends of the support arm 41 away from the fixed frame 1.

[0045] As Figure 15 shown, when it is necessary to clamp the graphite electrode 9 through the clamping part 3, the position of the positioning rod 421 is fixed. The driving device 5 drives the two frame bodies and the two clamping parts 3 to move towards each other, and the two clamping parts 3 clamp the graphite electrode 9 therebetween.

[0046] Preferably, the clamp support column 6 is fixedly connected with a fixing plate 61, and the upper and lower ends of the positioning rod 421 are respectively fixedly connected to the fixing plate 61.

[0047] Preferably, the driving part 4 further includes a first fixed shaft 43. The first fixed shaft 43 is fixedly connected to the support arm 41. The driving device 5 is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The piston rod and the cylinder body of the driving device 5 are respectively hinged to different first fixed shafts 43.

[0048] Optionally, as Figure 9 shown, the frame body includes a fixed frame 1 and a driving part 4. The driving part 4 includes a connecting arm 44, a support rod 45, a second fixed shaft 46 and a connecting shaft 47. The fixed frames 1 on both sides are respectively hinged and installed at both ends of the support rod 45. A second fixed shaft 46 is fixedly installed between the two support rods 45. The center of the second fixed shaft 46 is fixedly connected to the cylinder body of the driving device 5. The driving device 5 is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The end of the fixed frame 1 away from the clamping part 3 is hinged to the connecting arm 44. The connecting shaft 47 passes through the two connecting arms 44, and the two connecting arms 44 are rotatably connected through the connecting shaft 47. The piston rod of the driving device 5 is hinged to the connecting shaft 47.

[0049] When the clamping environment of the graphite electrode 9 is different, different driving parts 4 can be selected to meet the requirement of driving the clamping plate to clamp the electrode. The position of the support rod 45 needs to remain unchanged. The piston rod of the driving device 5 extends outwards and pushes the connecting shaft 47 away from the support rod 45. Since both ends of the support rod 45 are hinged to the fixed frame 1, when the piston rod of the driving device 5 pushes the connecting shaft 47 to move away from the support rod 45, the connecting arms 44 on both sides rotate and push the end of the fixed frame 1 away from the clamping part 3 to move outwards. The two fixed frames 1 approach each other, and the graphite electrode 9 is clamped through the clamping part 3.

[0050] Optionally, as Figure 10 shown, the frame body includes a fixed frame 1 and a driving part 4. The driving part 4 includes a connecting rod 40, a rotating arm 48 and a rotating shaft 49. The rotating arm 48 is fixedly connected to one end of the fixed frame 1 away from the clamping part 3. The connecting rod 40 passes through the through holes at one ends of the left and right rotating arms 48 away from the fixed frame 1, and the diameter of the connecting rod 40 is smaller than the inner diameter of the through hole. The rotating arm 48 is rotatably connected to the rotating shaft 49. The rotating shaft 49 is fixedly connected to the clamp support column 6, and the rotating arm 48 is rotatably connected to the rotating shaft 49. When the piston rod of the driving device 5 moves inward, the piston rod pulls the connecting rod 40 and drives the fixed frames 1 on both sides to rotate inward, and the two clamping parts 3 approach each other to clamp the graphite electrode 9.

[0051] Optionally, the connecting piece is a universal joint, and the two ends of the universal joint are respectively fixedly connected or rotatably connected to the clamping part 3 and the fixed seat 2. When the two ends of the universal joint are fixedly connected to the clamping part 3 and the fixed seat 2, the clamping part 3 has two degrees of rotational freedom; when one end of the universal joint is rotatably connected to the clamping part 3 or the fixed seat 2, the clamping part 3 has three degrees of rotational freedom.

[0052] Optionally, the connecting piece includes a first spherical part 22 and a second spherical part 33. The first spherical part 22 is fixed relative to the fixed seat 2, the first spherical part 22 is formed with a first spherical surface 221, the second spherical part 33 is fixed relative to the clamping part 3, the second spherical part 33 is formed with a second spherical surface 331, and the first spherical surface 221 and the second spherical surface 331 are in contact with each other.

[0053] When clamping the electrode, the first spherical surface 221 and the second spherical surface 331 are always in close contact, and the spherical casting 33 can enable the clamping part 3 to have an inclination range, which can be used to clamp the graphite electrode 9 with an uneven surface or a certain inclination angle, and the second spherical part 33 can be adaptively rotated and adjusted according to the graphite electrode 9 to ensure the stability of clamping.

[0054] Optionally, as Figures 4 to 8 shown, the first spherical surface 221 of the first spherical part 22 is a spherical concave surface, and the second spherical surface 331 of the second spherical part 33 is a spherical convex surface.

[0055] Optionally, as Figures 12 to 14 shown, the first spherical surface 221 of the first spherical part 22 is a spherical convex surface, and the second spherical surface 331 of the second spherical part 33 is a spherical concave surface.

[0056] Wherein, the radii of the spherical convex surface and the spherical concave surface are the same.

[0057] Furthermore, a limiting part 23 is further included, and the limiting part is used to limit the second spherical part 33 from disengaging from the contact with the first spherical part 22.

[0058] Further, the limiting member 23 includes a nut 231, a gasket 232, an elastic element 233, and a threaded member 234. The threaded member 234 passes through the fixed seat 2 and is threadedly connected to the second spherical member 33. One end of the elastic element 233 contacts the fixed seat 2 or the first spherical member 22, and the other end contacts the gasket 232. The nut 231 is threadedly connected to the threaded member 234 and contacts the end of the gasket 232 away from the elastic element 233.

[0059] Optionally, as Figure 7 and Figure 8 shown, the first spherical member 22 and the fixed seat 2 are respectively provided with through holes. The threaded member 234 passes through the through holes of the first spherical member 22 and the fixed seat 2, and its diameter is smaller than the inner diameters of the two through holes, so that the threaded member 234 can have a certain inclination angle in the through holes. Among them, the inner diameter of the through hole of the first spherical member 22 is smaller than the inner diameter of the through hole of the fixed seat 2. One end of the elastic element 233 contacts the first spherical member 22 and is smaller than its through hole inner diameter, and the other end of the elastic element 233 contacts the gasket 232. The diameters of the gasket 232 and the nut 231 are smaller than the inner diameter of the through hole of the fixed seat 2.

[0060] Optionally, as Figure 12 and Figure 14 shown, the fixed seat 2 is formed with a stepped hole. One end of the elastic element 233 is located in the stepped hole and contacts the stepped surface. The other end of the elastic element 233 contacts the gasket 232. The minimum inner diameter of the threaded member 234 is smaller, and the threaded member 234 can swing a certain angle in the stepped hole.

[0061] Preferably, the elastic element 233 is a disc spring. The advantages of the disc spring are small axial dimension and large elastic force; one of the two nuts 231 close to the disc spring can adjust the magnitude of the disc spring force to ensure reliable contact (compression) of the spherical pair while allowing flexible rotation; when adjusted to the appropriate state, tighten the second nut 231 to play an anti-loosening role.

[0062] Further, the clamping portion 3 includes an electrode plate 31 and a water tank 32. The electrode plate 31 and the water tank 32 are fixedly connected, and the second spherical member 33 is fixedly connected to the water tank 32. Since the electrode plate 31 will generate a certain amount of heat (80 - 90 °C) when energized, in order to dissipate the heat of the electrode plate 31 in time, therefore, a water tank 32 is installed on one side of the electrode plate 31, and a coolant is injected into the water tank 32 for timely cooling of the electrode plate 31.

[0063] Further, it further includes a connector 34. The water tank 32 includes a first copper plate 321, a second copper plate 322 and side members 324. A water storage cavity 323 is formed among the first copper plate 321, the second copper plate 322 and the side members 324. The two sides of the side members 324 are respectively fixedly connected to the first copper plate 321 and the second copper plate 322. The connector 34 is fixedly connected to the water tank 32 and is in communication with the water storage cavity 323. The connector 34 is connected to a cold source. The coolant enters the water tank 32 from one connector 34, and flows out of the water storage cavity 323 from the other connector 34 after absorbing heat. The cold source at least includes a water pump and a water storage tank. The output end of the water pump is communicated with one connector 34, and the input end of the water pump is communicated with the water storage tank. The water pump is used to pump the coolant in the water storage tank into the water tank 32. Preferably, the water storage tank is a heat exchanger.

[0064] Further, it further includes a lubricating oil cup 24. The fixed seat 2 is formed with a first through hole 21, and the first spherical part 22 is formed with a second through hole 222. The first through hole 21 and the second through hole 222 are in communication. The lubricating oil cup 24 is inserted into the first through hole 21 and is fixedly connected to the fixed seat 2. High-quality medium carbon steel is selected for the ball head part. After heat treatment, both the hardness and wear resistance are improved. After heat treatment, the contact surfaces of the ball concave and the ball convex are ground repeatedly to achieve a very high roughness. At the same time, high-temperature resistant lubricating grease is regularly added to the contact surface of the spherical pair through the lubricating oil cup 24. Through these measures, the friction force between the spherical pairs is greatly reduced, and the rotation resistance of the electrode plate 31 following the graphite electrode 9 is greatly reduced.

[0065] When the trolley travels along the track to the end of a certain furnace in the Acheson furnace group and touches the limit switch to stop moving, the openings of the two clamping parts 3 are exactly aligned with the connecting furnace end graphite electrode 9, but there is a safety distance left between the clamping part 3 and the end of the graphite electrode 9. When power needs to be supplied, the hydraulic cylinder pushes the clamp support column 6 to move linearly towards the graphite electrode 9 until the graphite electrode 9 is located between the two electrode plates 31 of the clamp and then the clamp support column 6 stops moving. The graphite electrodes 9 are usually arranged in multiple rows and columns, so the number and arrangement dimensions of the clamping devices are the same as those of the graphite electrodes 9. If the position dimension of the graphite electrode 9 deviates or the electrode is skewed due to the masonry error of the furnace 91 or the installation error of the busbar, the clamping part 3 rotates around the fixed seat 2 and automatically aligns and fits with the graphite electrode 9.

[0066] The above illustrates the present invention by way of example, but the present invention is not limited to the above specific embodiments. Any modification or variation based on the present invention falls within the scope of protection required by the present invention.

Claims

1. An electrode clamping adaptive clamping device, characterized in that, Comprising: A fixed seat (2), a clamping part (3), a driving device (5) and a frame body. The two frame bodies are relatively rotatably connected. The driving device (5) is respectively connected to the two frame bodies and drives the two frame bodies to move relatively. The two frame bodies are respectively fixedly connected to the fixed seat (2). The clamping part (3) and the fixed seat (2) are universally connected through a connecting member. The clamping parts (3) corresponding to the two frame bodies are arranged facing each other.

2. The self-adaptive clamping device for electrode clamping according to claim 1, wherein: Further comprising a clamp pillar (6) and a positioning rod (421). The frame body includes a fixed frame (1) and a driving part (4). The fixed seat (2) is fixedly installed on the fixed frame (1). The driving part (4) includes a support arm (41) and a cross arm (42). The fixed frame (1) is fixedly connected to the support arm (41). The side surface of the support arm (41) near one end of the fixed frame (1) is fixedly connected to the cross arm (42). The two cross arms (42) are respectively rotatably connected to the same positioning rod (421). The positioning rod (421) is fixedly connected to the clamp pillar (6). The two ends of the driving device (5) are respectively rotatably connected to the ends of the support arm (41) far from the fixed frame (1).

3. The self - adaptive clamping device for electrode clamping according to claim 2, characterized in that: The driving part (4) further includes a first fixed shaft (43). The first fixed shaft (43) is fixedly connected to the support arm (41). The driving device (5) is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The piston rod and the cylinder body of the driving device (5) are respectively hinged to different first fixed shafts (43).

4. An electrode clamping adaptive clamping device according to claim 1, characterized in that: The frame body includes a fixed frame (1) and a driving part (4). The driving part (4) includes a connecting arm (44), a support rod (45), a second fixed shaft (46) and a connecting shaft (47). The fixed frames (1) on both sides are respectively hinged and installed at both ends of the support rod (45). A second fixed shaft (46) is fixedly installed between the two support rods (45). The center of the second fixed shaft (46) is fixedly connected to the cylinder body of the driving device (5). The driving device (5) is a hydraulic cylinder, a pneumatic cylinder or an electric push rod. The end of the fixed frame (1) far from the clamping part (3) is hinged to the connecting arm (44). The connecting shaft (47) passes through the two connecting arms (44). The two connecting arms (44) are rotatably connected through the connecting shaft (47). The piston rod of the driving device (5) is hinged to the connecting shaft (47).

5. An electrode clamping adaptive clamping device according to claim 1, characterized in that: The frame body includes a fixed frame (1) and a driving part (4). The driving part (4) includes a connecting rod (40), a rotating arm (48) and a rotating shaft (49). The rotating arm (48) is fixedly connected to the end of the fixed frame (1) far from the clamping part (3). The connecting rod (40) passes through the through holes at the ends of the left and right rotating arms (48) far from the fixed frame (1), and the diameter of the connecting rod (40) is smaller than the inner diameter of the through holes. The rotating arm (48) is rotatably connected to the rotating shaft (49).

6. The self-adaptive clamping device for electrode clamping according to claim 1, characterized in that: The connecting member includes a first spherical member (22) and a second spherical member (33). The first spherical member (22) is fixed relative to the fixed seat (2). The first spherical member (22) is formed with a first spherical surface (221). The second spherical member (33) is fixed relative to the clamping portion (3). The second spherical member (33) is formed with a second spherical surface (331). The first spherical surface (221) and the second spherical surface (331) are in contact with each other.

7. An electrode clamping adaptive clamping device according to claim 6, characterized in that: It further includes a limiting member (23). The limiting member is used to limit the second spherical member (33) from disengaging from the contact with the first spherical member (22).

8. An electrode clamping adaptive clamping device according to claim 7, characterized in that: The limiting member (23) includes a nut (231), a gasket (232), an elastic element (233) and a threaded member (234). The threaded member (234) passes through the fixed seat (2) and is threadedly connected to the second spherical member (33). One end of the elastic element (233) contacts the fixed seat (2) or the first spherical member (22), and the other end contacts the gasket (232). The nut (231) is threadedly connected to the threaded member (234) and contacts one end of the gasket (232) away from the elastic element (233).

9. An electrode clamping adaptive clamping device according to claim 6, characterized in that: It further includes a lubricating oil cup (24). The fixed seat (2) is formed with a first through hole (21). The first spherical member (22) is formed with a second through hole (222). The first through hole (21) and the second through hole (222) are communicated with each other. The lubricating oil cup (24) is inserted into the first through hole (21) and fixedly connected to the fixed seat (2).

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