Magnetic particle flaw detector and pedal loosening and clamping device thereof

Abstract

The invention provides a magnetic particle flaw detector and a pedal loosening and clamping device thereof. The pedal loosening and clamping device comprises a pedal rod device, a steel wire rope pulley device and an elastic force adjusting device, the steel wire rope pulley device connects a steel wire rope with the foot rest lever device through a first pulley yoke, and the foot rest lever device triggers loosening and clamping operation. The inside of the elasticity adjusting device is connected with an electrode shaft, the steel wire rope pulley device connects a steel wire rope with the electrode shaft through a second pulley yoke, synchronous movement of the foot rest lever device and the electrode shaft is achieved through the steel wire rope, and overall loosening and clamping are achieved in cooperation with an electrode disc. And the loosening and clamping pressure is adjusted through the elastic force adjusting device. The loosening and clamping device solves the problems that the clamping force of an existing loosening and clamping device for magnetic powder inspection is not easy to adjust, excessive clamping is easy to occur or the clamping force is insufficient, a power supply or an air source needs to be configured, and loosening and clamping inspection of a workpiece is inconvenient, and has the characteristics of being convenient to operate and improving the clamping effect and the clamping efficiency.

Description

Technical Field

[0001] This invention relates to the field of magnetic particle flaw detector manufacturing technology, specifically to a magnetic particle flaw detector and its foot-operated clamp release device. Background Technology

[0002] The clamping release device is one of the most important parts of a magnetic particle inspection machine system. Its function is to clamp the workpiece for magnetic particle inspection. The clamping force is critical; too much force can deform the workpiece, while too little force will result in insufficient clamping and, due to the small contact area, potential sparking during magnetization. The clamping release device mainly consists of an electrode disk, electrode shaft, bearing sleeve, and clamping power source. Traditional clamping release devices use either pneumatic or electric clamping power sources, both of which have difficult-to-adjust pressure. These issues frequently arise, significantly impacting and limiting the efficiency of the inspection machine. Furthermore, pneumatic systems require an air source, and electric systems require an additional motor, placing higher demands on the factory layout and significantly impacting efficiency and energy conservation.

[0003] Therefore, it is necessary to provide a novel clamping device for magnetic particle flaw detectors to solve the aforementioned technical problems. Currently, no descriptions or reports of similar technologies have been found, and no similar domestic or international materials have been collected. Summary of the Invention

[0004] To address the aforementioned shortcomings in the prior art, this invention provides a magnetic particle flaw detector and its foot-operated clamp release device.

[0005] According to one aspect of the present invention, a foot-operated release device for a magnetic particle flaw detector is provided, comprising: a foot pedal device, a wire rope pulley device, and a spring force adjustment device; wherein:

[0006] The wire rope pulley device connects the wire rope to the foot pedal device through the first pulley frame, and the foot pedal device triggers the release operation.

[0007] The internal part of the elastic adjustment device is connected to an electrode shaft. The wire rope pulley device connects the wire rope to the electrode shaft through a second pulley frame. The wire rope enables the synchronous movement of the foot pedal device and the electrode shaft, which, together with the electrode plate, achieves overall clamping and releasing. The clamping and releasing pressure is adjusted by the elastic adjustment device.

[0008] According to another aspect of the present invention, a magnetic particle inspection machine is provided, which uses the foot-operated clamping device described above to clamp the workpiece to be tested.

[0009] Preferably, the starting position of the wire rope is the bottom bed position, and it is connected to the eye bolt in sequence through the first pulley frame and the second pulley frame inside the fixed box. The eye bolt is fixed on the electrode shaft to form an integral part. The electrode shaft is fixedly connected to an electrode disk and forms a clamping mechanism with another electrode disk set on the other side. The clamping pressure is adjusted by the elastic adjustment device.

[0010] By adopting the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art:

[0011] The magnetic particle flaw detector and its foot-operated clamp release device provided by this invention, through the foot pedal, fulcrum bracket, U-shaped clamp, wire rope, pin, sleeve, wire rope, pulley groove, pulley frame, pulley pin, lifting eye bolt, electrode shaft, and electrode disk, are installed stably, ensuring that they will not change after long-term use. Moreover, they are easy to install and disassemble, solving the key and difficult problems of the clamping and loosening components of the magnetic particle flaw detector, and achieving the effects of convenient operation and improved clamp release efficiency.

[0012] The magnetic particle flaw detector and its foot-operated clamp release device provided by this invention can adjust the clamp release pressure through an optical axis, linear bearing, push plate, pressure ring, spring and locking ring, without the need for additional power or air source, and has the characteristics of convenient implementation and energy saving.

[0013] The magnetic particle flaw detector and its foot-operated clamp release device provided by this invention have an optical shaft made of chrome-plated 45# steel, which has the characteristics of stable properties, pure steel quality, low inclusion content, and surface hardness of 58-60 degrees after chrome plating. The push plate and pressure ring slider are made of high-strength steel, which has the characteristics of high hardness and good wear resistance, and can improve its service life. Attached Figure Description

[0014] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of the magnetic particle flaw detector and its foot-operated clamp release device in a preferred embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the foot pedal device in a preferred embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the steel wire rope pulley device in a preferred embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the elasticity adjustment device in a preferred embodiment of the present invention.

[0019] In the diagram: 1 is the foot pedal device; 2 is the wire rope pulley device; 3 is the elastic adjustment device; 4 is the bed position; 5 is the wire rope; 6 is the pulley frame; 7 is the electrode shaft; 8 is the foot pedal; 9 is the U-shaped clamp; 10 is the pin; 11 is the sleeve; 12 is the fixed box; 13 is the pulley pin; 16 is the lifting eye bolt; 18 is the electrode plate; 19 is the shaft support; 20 is the optical shaft; 21 is the linear bearing; 22 is the push plate; 23 is the pressure ring; 24 is the spring; 25 is the locking ring. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below: These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0021] In the existing technology, the clamping release device for magnetic particle inspection usually has problems such as difficulty in adjusting the clamping force, easy over-clamping or insufficient clamping force, and the need to configure a power supply or air supply, which makes it inconvenient to release and inspect workpieces.

[0022] To address the aforementioned problems, one embodiment of the present invention provides a foot-operated clamp release device for a magnetic particle flaw detector. This device utilizes a foot pedal to trigger the clamp release mechanism, a wire rope pulley device to drive the electrode disk to release the clamp, and an elastic force adjustment device to adjust the clamping force. It has the advantages of convenient operation, improved clamping effect, and improved clamping efficiency.

[0023] Specifically, such as Figures 1-4 As shown, the foot-operated release device for a magnetic particle flaw detector provided in this embodiment may include: a foot pedal device 1, a wire rope pulley device 2, and a spring adjustment device 3; wherein:

[0024] The wire rope pulley device 2 connects the wire rope 5 to the foot pedal device 1 through the first pulley frame, and triggers the release operation through the foot pedal device 1;

[0025] The inside of the elastic adjustment device 3 is connected to an electrode shaft 7. The wire rope pulley device 2 connects the wire rope 5 to the electrode shaft 7 through the second pulley frame. The wire rope 5 enables the synchronous movement of the foot pedal device 1 and the electrode shaft 7, which, together with the electrode plate 18, enables the overall clamping and releasing. The clamping and releasing pressure is adjusted by the elastic adjustment device 3.

[0026] In some preferred embodiments, the foot pedal device 1 includes: a foot pedal 8, a U-shaped clamp 9, a pin 10, and a sleeve 11; wherein:

[0027] The foot pedal 8 adopts a U-shaped steel pipe structure, and the open end of the U-shaped steel pipe structure is integrated with the steel sleeve 11; the U-shaped clamp 9 is configured on the foot pedal 8 for connection with the steel wire rope 5; the pin 10 is installed inside the sleeve 11 and is connected and fixed through the mounting holes symmetrically opened at both ends and the matching fasteners.

[0028] By driving the foot pedal 8, the U-shaped clamp 9 drives the steel wire rope 5 to move, thereby triggering the clamp release operation.

[0029] In some preferred embodiments, the U-shaped clip 9 is internally fitted with a nylon sleeve for insulation.

[0030] In some preferred embodiments, a movable gap is provided between the pin 10 and the sleeve 11.

[0031] In some preferred embodiments, both the first pulley frame and the second pulley frame are provided with pulley grooves and pulley pins 13. The wire rope 5 is wound in the pulley groove and reciprocates through the pulley pin 13. One end of the wire rope 5 is connected to the foot pedal device 1, and the other end of the wire rope 5 is connected to the electrode shaft 7 through the eye bolt 16. The electrode shaft 7 is fixed to the electrode disk 18 through the center bolt.

[0032] In some preferred embodiments, the elastic adjustment device 3 includes two sets of optical axis groups, each set of optical axis groups including: an optical axis 20, a linear bearing 21, a push plate 22, a pressure ring 23, a spring 24, and a locking ring 25; wherein:

[0033] The optical axis 20 is fixed by the shaft supports 19 at both ends and connected to the push plate 22 by the linear bearing 21. The pressure ring 23 is fixed to the push plate 22. The spring 24 is fitted on the optical axis 20 and is clamped between the pressure ring 23 and the locking ring 25 to set the pressure. The locking ring 25 is locked by the locking screw to ensure that the pressure is adjustable.

[0034] The push plate 22 in the two optical axis groups is an integral structure, and the electrode shaft 7 is fixed at the center of the push plate 22.

[0035] In some preferred embodiments, the shaft support 19 is made of aluminum alloy; the optical shaft 20 is made of chrome-plated 45# steel; the push plate 22 and the pressure ring 23 are made of steel, and the surface of the pressure head portion of the pressure ring 23 is covered with a plastic layer.

[0036] Furthermore, in the above embodiments of the present invention:

[0037] The foot pedal assembly uses a steel pipe bent into a U-shape. The steel pipe has a diameter of 27mm, and the spacing between the U-shapes is 220mm. The bottom is integrated with the sleeve and fixed through two mounting holes spaced 200mm apart. Each foot pedal is equipped with a U-shaped clamp, internally insulated with a nylon sleeve to ensure wear resistance and durability. The U-shaped clamp is used to secure one end of the wire rope, connecting it to the wire rope pulley assembly for convenient and quick positioning, assembly, and disassembly.

[0038] The described wire rope pulley device connects the wire rope to the foot pedal and electrode shaft via a pulley frame fixed to a fixed housing, allowing for synchronized movement. The pulley frame is equipped with pulley pins that can be lubricated to reduce friction and facilitate the reciprocating movement of the wire rope. The electrode shaft is connected to the wire rope using eye bolts, which are grade 8.8 to ensure the mechanism's durability. All mounting bolts in the wire rope pulley device are grade 8.8, saving on manufacturing materials while maintaining the device's physical strength.

[0039] The elastic adjustment device internally houses a fixed optical axis with a diameter of 25mm. Fixed shaft supports are located on both sides of the optical axis, a dual-axis design ensuring stable and reliable support. A push plate is fixed to both optical axes, with an M10 eye bolt hole in the center for securing the eye bolt. A pressure ring is screwed to the push plate and houses an M38 spring, 100mm in length (in the relaxed state). A locking ring with an open optical axis is located behind the spring, allowing adjustment of the spring's tension.

[0040] The foot pedal assembly is made of high-strength stainless steel tubing, and the fixed support is made of high-hardness stainless steel. Both high-strength and high-hardness stainless steel have high physical strength and will not easily deform when subjected to pressure. After long-term use, the surface will not easily develop rust.

[0041] The wire rope is made of industrial-grade high-strength steel wire, which boasts exceptional toughness, durability, and wear resistance, ensuring it will not be damaged by prolonged contact with other mechanisms. This component is a consumable part and can be replaced when damaged or worn beyond its service life. The eye bolt is made of high-strength stainless steel, ensuring it will not be damaged by prolonged contact with other mechanisms. This component is also a consumable part and can be replaced when damaged or worn beyond its service life.

[0042] The shaft support of the elastic adjustment device is made of high-strength aluminum alloy, which is lightweight, sandblasted, and aesthetically pleasing and durable. The optical shaft is made of chrome-plated 45# steel. 45# steel is stable, pure, and has low inclusion content; after chrome plating, its surface hardness reaches 58-60 degrees. The push plate and pressure ring slider are made of high-strength steel to ensure they will not be damaged during prolonged contact. This component is a consumable part and can be replaced when it is damaged or worn beyond its usage requirements. The pressure ring head is covered with a plastic layer to reduce friction and ensure long-term stable operation.

[0043] Based on the same inventive concept, an embodiment of the present invention also provides a magnetic particle inspection machine, which uses the foot-operated clamp release device for magnetic particle inspection provided in the above embodiment of the present invention to clamp the workpiece to be tested.

[0044] In some preferred embodiments, the bottom of the foot pedal device 1 is fixedly installed on the bed position 4 at the bottom of the magnetic particle flaw detector.

[0045] In some preferred embodiments, the first pulley frame and the second pulley frame are respectively fixedly installed inside the fixed housing 12 of the magnetic particle flaw detector at the bottom and side.

[0046] In some preferred embodiments, the starting position of the wire rope 5 is the bed position 4, and it is connected to the eye bolt 16 in sequence through the first pulley frame and the second pulley frame in the fixed housing 12. The eye bolt 16 is fixed on the electrode shaft 7 to form an integral part. The electrode shaft 7 is fixedly connected to an electrode disk 18 and forms a clamping mechanism with another electrode disk set on the other side. The clamping pressure is adjusted by the elastic adjustment device 3.

[0047] The technical solution provided by the above embodiments of the present invention will be further described in detail below with reference to a specific application example and the accompanying drawings.

[0048] In this specific application example, such as Figure 1 As shown, it includes: a foot pedal device 1, a wire rope pulley device 2, a spring adjustment device 3, a bed position 4, a wire rope 5, a pulley frame 6, and an electrode shaft 7. The foot pedal device 1 is connected to the wire rope 5, the pulley frame 6 is fixed to the bed, and the electrode shaft 7 is connected to the wire rope 5 through a lifting eye bolt.

[0049] like Figure 2 As shown, the foot pedal 8 is a U-shaped tube made of stainless steel. The center section of the U-shaped tube is equipped with a U-shaped clamp 9 for connecting with the wire rope 5. The pin 10 has two mounting holes symmetrically opened on the left and right ends, and is fixed to the sleeve 11 by fixing screws to connect them into one piece.

[0050] like Figure 3As shown, the pulley frame 6 is fixed to the bottom and side of the fixed box 16 by screws. The steel wire rope 5 is connected to the electrode shaft 7 by the eye bolt 16. The electrode shaft 7 is fixed to the electrode disk 18 by the center bolt for pressure adjustment to achieve overall clamping and loosening.

[0051] like Figure 4 As shown, the optical axis 20 is fixed by the shaft supports 19 at both ends. The left and right optical axes 20 are connected to the push plate 22 by the bearing 21. The spring 24 is clamped in the middle by the pressure ring 23 and the locking ring 25 to set the pressure. The locking ring 25 is locked by the optical axis opening locking screw to ensure that the pressure is adjustable.

[0052] like Figure 2 As shown, the foot pedal is made of high-strength stainless steel tubing, and the fixed support is made of high-hardness stainless steel. High-strength and high-hardness stainless steel have high physical strength and will not easily deform when squeezed. After long-term use, the surface will not easily rust.

[0053] like Figure 3 As shown, the wire rope is made of industrial-grade high-strength steel wire, which boasts ultra-high toughness, durability, and wear resistance, ensuring it will not be damaged by other mechanisms during prolonged contact. This component is a consumable part and can be replaced when damaged or worn beyond its service requirements. The eye bolt is made of high-strength stainless steel, ensuring it will not be damaged by other mechanisms during prolonged contact. This component is also a consumable part and can be replaced when damaged or worn beyond its service requirements.

[0054] like Figure 4 As shown, the shaft support of the elastic adjustment device is made of high-strength aluminum alloy. Aluminum alloy is lightweight, sandblasted, and aesthetically pleasing and durable. The optical shaft is made of chrome-plated 45# steel. 45# steel is stable, pure, and has low inclusion content; after chrome plating, its surface hardness reaches 58-60 degrees. The push plate and pressure ring slider are made of high-strength steel to ensure they will not be damaged during prolonged contact. This component is a consumable part and can be replaced when it is damaged or worn beyond its usage requirements. The pressure ring head is covered with a plastic layer to reduce friction and ensure long-term stable operation.

[0055] Furthermore, in this specific application example, the foot pedal release device for the magnetic particle flaw detector involves a foot pedal device 1 with the top fixedly mounted on the machine bed 4, and a wire rope pulley device 2 with its bottom connected to the foot pedal device 1. The wire rope pulley device 2 is characterized in that its bottom is fixed to the machine bed 4, the wire rope pulley device 2 connects the wire rope to the foot pedal via a pulley frame 6, and the elastic adjustment device 3 is internally connected to the electrode shaft 7. The tail end of the electrode shaft 7 is connected to the elastic adjustment device 3 for adjusting the pressure.

[0056] The upper surface of the foot pedal device 1 is fixed to the bed via a sleeve 11, which is 300mm long. Inside the sleeve 11 is a pin 10, 320mm long, made of hollow stainless steel. The end of the hollow tube has a locking hole to lock the pin 10 inside the sleeve 11, preventing it from slipping. Two symmetrical mounting holes, each 8mm in diameter, are provided on the left and right ends of the pin 10. The center of the pin 10 is symmetrical with the sleeve 11, with a 10mm clearance on each side for securing it in the mounting holes.

[0057] The pin 10 has two symmetrical mounting holes on its left and right ends. The sleeve 11 is fixed to the pin 10 through the fixing screw holes, and connected as one unit.

[0058] A pulley bracket 6 is fixed to the side and bottom of the fixed box 12. Two M8 screw holes are opened symmetrically on the left and right for fixing. The pulley pin 13 is fixedly installed on the pulley bracket 6.

[0059] The wire rope 5 is fixed at the bed position 4 and connected to the eye bolt 16 through the pulley frame 6. The eye bolt 16 is M10 in size and is fixed on the electrode shaft 7 to form a whole. The electrode disk 18 is fixedly installed with an M8 bolt, which is used to connect to the electrode shaft 7.

[0060] The shaft support 19 is connected to the optical axis 20. The linear bearing 21 is fixed to the push plate (22) and the pressure ring 23 by M8 bolts. The spring 24 is installed on the optical axis 20. The locking ring 25 is fixed on the optical axis 20 and its position is adjustable. It can be locked on the optical axis 20 by M6 screws.

[0061] The shaft support 19 is made of high-strength aluminum alloy, and the optical shaft 20 is made of chrome-plated 45# steel.

[0062] The wire rope 5 is made of industrial-grade strength and the eye bolt 16 is made of stainless steel.

[0063] The push plate 22 and the slider of the pressure ring 23 are made of steel, and the surface of the pressure head of the pressure ring 23 is covered with a plastic layer.

[0064] The magnetic particle inspection machine and its foot-operated clamping release device provided in the above embodiments of the present invention include a foot pedal device comprising a foot pedal, a fulcrum bracket, a U-shaped clamp, a pin, and a sleeve, used for foot-triggered clamping release operation. A wire rope pulley device comprises a wire rope, a pulley groove, a pulley frame, and a pulley pin, used to drive the electrode disk to release the clamp. A spring force adjustment device comprises an optical shaft, a linear bearing, a push plate, a pressure ring, a spring, and a locking ring, used for adjusting the clamping force. The present invention solves the problems of existing magnetic particle inspection clamping release devices, such as difficulty in adjusting the clamping force, easy over-clamping or insufficient clamping force, the need for a power supply or air supply, and inconvenience in clamping and inspecting workpieces. It achieves the beneficial effects of convenient operation, improved clamping effect and efficiency, and is applicable to the manufacturing technology of magnetic particle inspection machines.

[0065] Any matters not covered in the above embodiments of the present invention are well-known in the art.

[0066] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A foot-operated clamp release device for a magnetic particle flaw detector, characterized in that, include: The device includes a foot pedal (1), a wire rope pulley system (2), and a spring adjustment device (3); wherein: The wire rope pulley device (2) connects the wire rope (5) to the foot pedal device (1) through the first pulley frame, and triggers the release operation through the foot pedal device (1); The inside of the elastic adjustment device (3) is connected to an electrode shaft (7). The wire rope pulley device (2) connects the wire rope (5) to the electrode shaft (7) through the second pulley frame. The wire rope (5) enables the synchronous movement of the foot pedal device (1) and the electrode shaft (7), and cooperates with the electrode plate (18) to achieve overall clamping and loosening. The clamping pressure is adjusted by the elastic adjustment device (3).

2. The foot-operated clamp release device for a magnetic particle flaw detector according to claim 1, characterized in that, The foot pedal device (1) includes: a foot pedal (8), a U-shaped clamp (9), a pin (10), and a sleeve (11); wherein: The foot pedal (8) adopts a U-shaped steel pipe structure, and the open end of the U-shaped steel pipe structure is integrated with the steel sleeve (11); the U-shaped clamp (9) is disposed on the foot pedal (8) for connecting with the steel wire rope (5); the pin (10) is installed inside the sleeve (11) and is connected and fixed by mounting holes symmetrically opened at both ends and matching fasteners; By driving the foot pedal (8), the U-shaped clamp (9) drives the wire rope (5) to move, thereby triggering the clamp release operation.

3. The foot-operated clamp release device for a magnetic particle flaw detector according to claim 2, characterized in that, The U-shaped clip (9) is internally fitted with a nylon sleeve for insulation; and / or There is a movable gap between the pin (10) and the sleeve (11).

4. The foot-operated clamp release device for a magnetic particle flaw detector according to claim 1, characterized in that, Both the first pulley frame and the second pulley frame are provided with pulley grooves and pulley pins (13). The steel wire rope (5) is wound in the pulley groove and reciprocates through the pulley pin (13). One end of the steel wire rope (5) is connected to the foot pedal device (1), and the other end of the steel wire rope (5) is connected to the electrode shaft (7) through the eye bolt (16). The electrode shaft (7) is fixed to the electrode disk (18) through the center bolt.

5. The foot-operated clamp release device for a magnetic particle flaw detector according to claim 1, characterized in that, The elastic adjustment device (3) includes two sets of optical axis groups, each set of optical axis groups including: an optical axis (20), a linear bearing (21), a push plate (22), a pressure ring (23), a spring (24), and a locking ring (25); wherein: The optical axis (20) is fixed by the shaft supports (19) at both ends and connected to the push plate (22) by the linear bearing (21). The pressure ring (23) is fixed to the push plate (22). The spring (24) is fitted on the optical axis (20) and is clamped between the pressure ring (23) and the locking ring (25) to set the pressure. The locking ring (25) is locked by the locking screw to ensure that the pressure is adjustable. The push plate (22) in the two optical axis groups is an integral structure, and the electrode shaft (7) is fixed at the center of the push plate (22).

6. The foot-operated clamp release device for a magnetic particle flaw detector according to claim 5, characterized in that, The shaft support (19) is made of aluminum alloy; the optical axis (20) is made of chrome-plated 45# steel; the push plate (22) and the pressure ring (23) are made of steel, and the pressure head part of the pressure ring (23) is covered with a plastic layer.

7. A magnetic particle flaw detector, characterized in that, The foot-operated clamp release device according to any one of claims 1-6 is used to clamp the workpiece to be tested.

8. The magnetic particle flaw detector according to claim 7, characterized in that, The bottom of the foot pedal device (1) is fixedly installed on the bed position (4) at the bottom of the magnetic particle flaw detector.

9. The magnetic particle flaw detector according to claim 7, characterized in that, The first pulley frame and the second pulley frame are respectively fixedly installed on the bottom and side of a fixed box (12) inside the magnetic particle flaw detector.

10. The magnetic particle flaw detector according to claim 7, characterized in that, The starting position of the wire rope (5) is the bed position (4). It is connected to the eye bolt (16) in sequence through the first pulley frame and the second pulley frame in the fixed box (12). The eye bolt (16) is fixed on the electrode shaft (7) to form an integral part. The electrode shaft (7) is fixedly connected to an electrode disk (18) and forms a clamping mechanism with another electrode disk set on the other side. The clamping pressure is adjusted by the elastic adjustment device (3).

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