On-line grinding device for welding wheel

Abstract

The invention belongs to the technical field of welding wheel machining, and discloses a welding wheel online grinding device which comprises a machining base, a machine table is fixed to the top end of the machining base, a welding machine grinding wheel is installed in the machine table, a grinding mechanism is installed at one end of a connecting plate, an adjusting mechanism is installed at one end of the grinding mechanism, and a pressurizing mechanism is installed at one end of the adjusting mechanism. Through cooperation of structures such as an extension frame, a first connecting rod and a limiting groove, the device can open a fixing pin to put down the first connecting rod, so that a small grinding wheel is attached to the edge of a welding machine grinding wheel, a compressed air pipe is connected with an air conveying connector, and air is conveyed to a pneumatic motor through a second connecting rod; and after use, the first connecting rod is reset, the fixing pin is inserted into the limiting groove to reset the small grinding wheel, and therefore grinding of the welding machine grinding wheel is completed, and the purpose that the device can conveniently conduct on-line grinding on the welding machine grinding wheel is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding wheel processing, in particular to an online welding wheel grinding device. Background Art

[0002] The silicon steel unit is a continuous annealing unit. During production, the strip heads and tails need to be welded together to ensure production continuity. However, after long-term use, the amount of burrs on the welding wheel surface increases dramatically, and it is easy to adhere to a large amount of welding slag, affecting the welding quality. The disassembly time is long when replacing it, and there is a risk of scratching the strip.

[0003] When the welding wheel has a large defect, offline grinding is usually adopted. However, offline grinding requires the welding wheel to be removed from the welding machine, which increases the workload of the operator. When the unit runs at a fast pace, there is not enough time to replace the welding wheel. Therefore, the online grinding quality of the welding wheel plays a vital role in ensuring the stability of the welding quality. Therefore, an online grinding equipment is needed to process the welding wheel.

[0004] It is necessary to make a small grinding wheel above the welding machine grinding wheel, and install a small pneumatic motor above the grinding wheel to drive the small grinding wheel to rotate. When slight burrs, oxides, welding slag and other adhesions are found on the welding wheel, the grinding wheel fixing pin can be opened, the starting valve can be opened with one hand, and the small grinding wheel can be moved to the edge of the welding wheel with the other hand to start automatic grinding, which shortens the time of manual disassembly and grinding, and enables the equipment to apply pressure through the lever to make it automatically grind. Summary of the Invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides an online grinding device for welding wheels.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an online grinding device for a welding wheel, comprising a processing seat, a machine table fixed at the top of the processing seat, a welding machine grinding wheel installed inside the machine table, a connecting plate fixed at the top of the processing seat, a grinding mechanism installed at one end of the connecting plate, an adjustment mechanism installed at one end of the grinding mechanism, and a pressurizing mechanism installed at one end of the adjustment mechanism;

[0007] The grinding mechanism includes an extension frame, a first connecting rod and a limiting groove, the extension frame is fixed to the top end of the connecting plate, the first connecting rod is rotatably connected to the inside of the extension frame, one end of the first connecting rod is provided with a limiting groove, a fixing pin is installed on the outside of the extension frame, an air motor is fixed to the outside of the first connecting rod, a small grinding wheel is fixed to the rotating end of the air motor, the input end of the air motor is connected to the second connecting rod, and one end of the second connecting rod is connected to the air supply interface;

[0008] The adjustment mechanism includes an extension bar, a slot and an adjustment block. The extension bar is fixed to the outside of the first connecting rod. The extension bar is provided with a slot inside. The extension bar is movably connected to the adjustment block inside.

[0009] Preferably, the width of the small grinding wheel is equal to the width of the welding machine grinding wheel, and the diameter of the small grinding wheel is 8 cm.

[0010] Preferably, a supporting block is fixed to the bottom end of the adjusting block, the internal movably connected to the third connecting rod of the adjusting block, the external part of the third connecting rod is fixed with a knob, the external part of the third connecting rod is fixed with a gear, the internal movably connected to the first card block of the adjusting block, the internal movably connected to the second card block of the adjusting block, the unlocking and locking of the card block can be completed only by manually rotating the knob, the operation is simple and convenient, and the efficiency of pressure regulation during the grinding process is improved, a plurality of groups of equally spaced and symmetrically distributed card slots are provided on the extension bar, when the adjusting block slides to different card slot positions, the relative distance between the counterweight block and the small grinding wheel changes, when the counterweight block is away from the small grinding wheel, the lever principle increases the pressure, and when it approaches, the pressure decreases, thereby realizing precise control of the grinding pressure, which can be flexibly adjusted according to the degree of wear in different areas of the welding machine grinding wheel.

[0011] Preferably, a sliding groove is provided inside the extension bar, the inner wall of the adjustment block fits into the outer wall of the extension bar, the adjustment block and the extension bar are slidably connected, and the sliding groove inside the extension bar provides a clear guide path for the sliding of the adjustment block. At the same time, the design of the inner wall of the adjustment block fitting into the outer wall of the extension bar ensures a close fit between the two. This structure makes the sliding process of the adjustment block on the extension bar more stable and smooth, avoiding possible shaking or deviation during sliding, thereby ensuring the accuracy of the position adjustment of the counterweight block.

[0012] Preferably, the card slots are provided in two groups, and the card slots are symmetrically distributed about the central axis of the extension strip; the card slots are provided in several groups, and the card slots are arranged at equal intervals.

[0013] Preferably, the third connecting rod and the adjusting block are rotatably connected, and the knobs are provided with two groups, and the knobs are symmetrically distributed about the central axis of the third connecting rod, the outer walls of the first clamping block and the second clamping block fit the inner wall of the adjusting block, the first clamping block and the adjusting block are slidingly connected, and the second clamping block and the adjusting block are slidingly connected. The two groups of knobs are symmetrically distributed about the central axis of the third connecting rod, which is convenient for the operator to apply force with both hands synchronously, avoid torque deviation caused by unilateral rotation, make the knob rotation process smoother, and reduce the difficulty of operation. At the same time, the symmetrical structure can evenly transmit the rotational force, ensure that the third connecting rod drives the gear to rotate synchronously, and avoid jamming caused by uneven force.

[0014] Preferably, the outer wall of the gear is provided with several groups of teeth, the outer wall of the first block is provided with several groups of teeth, the outer wall of the second block is provided with several groups of teeth, the gear is meshed with the first block, and the gear is meshed with the second block.

[0015] Preferably, the pressure mechanism includes a mounting bracket, a mounting seat and a limit block, the mounting bracket is movably connected to the inside of the support block, the bottom end of the mounting bracket is fixed with a mounting seat, the top end of the mounting seat is fixed with a limit block, the internal thread of the mounting seat is connected to the limit plate, a limit rod is provided inside the limit plate, the bottom end of the limit rod is fixed with a counterweight block, the limit plate is connected to the mounting seat by a thread, and when the limit plate is rotated, it moves along the axis of the mounting seat, and when the limit plate moves toward the top end of the mounting seat, the inclined surface at the top will squeeze the inclined surface at the bottom end of the limit block, causing the four groups of open angles of the limit block to shrink, thereby clamping the limit rod and fixing the counterweight block. Reverse rotation can loosen the limit, making it easy to disassemble the counterweight block. Installation and disassembly can be completed without additional tools, thereby improving operational efficiency.

[0016] Preferably, two groups of mounting seats are provided, and the mounting seats are symmetrically distributed about the central axis of the mounting frame. The bottom end of the limiting block is provided with an inclined surface, and the top end of the limiting plate is provided with an inclined surface.

[0017] Preferably, the inner wall of the limit plate fits the outer wall of the limit rod, the limit plate and the limit rod are slidably connected, a mounting seat is fixed to the bottom end of the counterweight block, two groups of limit rods are provided, and the limit rods are symmetrically distributed about the central axis of the counterweight block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention cooperates with structures such as an extension frame, a first connecting rod, and a limiting groove, so that the device can open the fixing pin to lower the first connecting rod, so that the small grinding wheel fits the edge of the welding machine grinding wheel, connect the compressed air air pipe to the air supply interface, and supply air to the pneumatic motor through the second connecting rod, so that the pneumatic motor rotates and drives the small grinding wheel to rotate, and slowly rotates the welding machine grinding wheel so that the edge of the welding machine grinding wheel is fully polished by the small grinding wheel. After use, the first connecting rod is returned to its position, and the fixing pin is inserted into the limiting groove to reset the small grinding wheel, thereby completing the grinding of the welding machine grinding wheel, thereby achieving the purpose of facilitating the device to perform online grinding of the welding machine grinding wheel.

[0020] The present invention cooperates with structures such as extension strips, slots, and adjustment blocks, so that the device can drive the gear to rotate by rotating the knob, thereby driving the first and second blocks to contract, so that the first and second blocks are separated from the interior of the slots. At this time, the adjustment block can be slid to adjust the position of the adjustment block, and then adjust the position of the counterweight block. After the position is adjusted, the first and second blocks are reset and inserted into the slots at the corresponding positions, so as to achieve the purpose of facilitating the device to quickly adjust the pressure by adjusting the position of the counterweight block.

[0021] The present invention cooperates with structures such as the mounting frame, the mounting seat, and the limit block, so that the device can insert the limit rod into the interior of the limit plate, rotate the limit plate, and move the limit plate toward the mounting seat, and then squeeze the inclined surface at the bottom end of the limit block through the inclined surface opened at the top of the limit plate, so that the four groups of open angles of the limit block are contracted, and then the limit rod is fixed, thereby completing the installation of the counterweight block and the mounting frame, thereby achieving the purpose of facilitating the device to further adjust the pressure by changing the number of counterweight blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic structural diagram of the grinding assembly of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the grinding assembly of the present invention from the right side;

[0025] Figure 4 Schematic diagram of the structure of the grinding mechanism of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the regulating mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0028] Figure 7 This is a schematic diagram of the explosion structure of the pressurizing mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of a partial explosion structure of the pressurizing mechanism of the present invention;

[0030] Figure 9 It is a schematic diagram of the partially exploded structure of the pressurizing mechanism of the present invention viewed from above.

[0031] In the figure: 1. Processing seat; 2. Machine table; 3. Welding machine grinding wheel; 4. Connecting plate; 5. Grinding mechanism; 501. Extension frame; 502. First connecting rod; 503. Limiting groove; 504. Fixing pin; 505. Pneumatic motor; 506. Small grinding wheel; 507. Second connecting rod; 508. Air supply interface; 6. Adjusting mechanism; 601. Extension bar; 602. Slot; 603. Adjusting block; 604. Support block; 605. Third connecting rod; 606. Knob; 607. Gear; 608. First clamping block; 609. Second clamping block; 7. Pressurizing mechanism; 701. Mounting frame; 702. Mounting seat; 703. Limiting block; 704. Limiting plate; 705. Limiting rod; 706. Counterweight. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown, the present invention provides an online grinding device for a welding wheel, comprising a processing seat 1, a machine table 2 is fixed on the top of the processing seat 1, a welding machine grinding wheel 3 is installed inside the machine table 2, a connecting plate 4 is fixed on the top of the processing seat 1, a grinding mechanism 5 is installed at one end of the connecting plate 4, an adjusting mechanism 6 is installed at one end of the grinding mechanism 5, and a pressurizing mechanism 7 is installed at one end of the adjusting mechanism 6.

[0034] like Figures 1 to 9 As shown, the grinding mechanism 5 includes an extension frame 501, a first connecting rod 502 and a limiting groove 503. The extension frame 501 is fixed to the top of the connecting plate 4. The interior of the extension frame 501 is rotatably connected to the first connecting rod 502. One end of the first connecting rod 502 is provided with a limiting groove 503. A fixing pin 504 is installed on the outside of the extension frame 501. An air motor 505 is fixed to the outside of the first connecting rod 502. A small grinding wheel 506 is fixed to the rotating end of the air motor 505. The input end of the air motor 505 is connected to the second connecting rod 507. One end of the second connecting rod 507 is connected to the gas transmission interface 508. The width of the small grinding wheel 506 is equal to the width of the welding machine grinding wheel 3, and the diameter of the small grinding wheel 506 is 8 cm.

[0035] The above scheme is adopted: when burrs, oxides, welding slag and other adhesions are found on the welding machine grinding wheel 3, the fixing pin 504 is opened to lower the first connecting rod 502, so that the small grinding wheel 506 is attached to the edge of the welding machine grinding wheel 3, the compressed air pipe is connected to the air supply interface 508, and air is supplied to the air motor 505 through the second connecting rod 507, so that the air motor 505 rotates and drives the small grinding wheel 506 to rotate, and slowly rotates the welding machine grinding wheel 3 so that the edge of the welding machine grinding wheel 3 is fully polished by the small grinding wheel 506. After use, the first connecting rod 502 is returned to its position, and the fixing pin 504 is inserted into the limit groove 503 to align the welding machine grinding wheel 3. The small grinding wheel 506 is reset to complete the grinding of the welding machine grinding wheel 3. The wear state of the small grinding wheel 506 can be observed during the grinding process. When the edge of the grinding wheel is found to be blunt, the position of the counterweight block 706 is slid by adjusting the mechanism 6, and the grinding pressure is increased or decreased by using the lever principle. After the grinding is completed, in addition to returning the first connecting rod 502 to its original position, the counterweight block 706 can be rotated and removed by the limit plate 704 of the pressurizing mechanism 7 to avoid long-term load-bearing causing plastic deformation of the extension bar 601. At the same time, compressed air is used to blow out the welding slag residue in the gas supply interface 508 and the second connecting rod 507 to prepare for the next online grinding.

[0036] like Figures 1 to 7 As shown, the adjustment mechanism 6 includes an extension bar 601, a slot 602 and an adjustment block 603. The extension bar 601 is fixed to the outside of the first connecting rod 502. A slot 602 is provided inside the extension bar 601. The extension bar 601 is movably connected to the adjustment block 603. A sliding groove is provided inside the extension bar 601. The inner wall of the adjustment block 603 fits the outer wall of the extension bar 601. The adjustment block 603 and the extension bar 601 are slidably connected. There are two groups of slots 602, and the slots 602 are symmetrically distributed about the central axis of the extension bar 601. There are several groups of slots 602, and the slots 602 are arranged at equal intervals.

[0037] like Figures 1 to 7As shown, the bottom end of the adjustment block 603 is fixed with a support block 604, the interior of the adjustment block 603 is movably connected to a third connecting rod 605, the exterior of the third connecting rod 605 is fixed with a knob 606, the exterior of the third connecting rod 605 is fixed with a gear 607, the interior of the adjustment block 603 is movably connected to a first clamping block 608, the interior of the adjustment block 603 is movably connected to a second clamping block 609, the third connecting rod 605 and the adjustment block 603 are rotatably connected, and the knob 606 is provided in two groups, the knob 606 is about the third connecting rod The central axis of 605 is symmetrically distributed, the outer walls of the first block 608 and the second block 609 fit the inner wall of the adjustment block 603, the first block 608 and the adjustment block 603 are slidingly connected, the second block 609 and the adjustment block 603 are slidingly connected, the outer wall of the gear 607 is provided with several groups of teeth, the outer wall of the first block 608 is provided with several groups of teeth, the outer wall of the second block 609 is provided with several groups of teeth, the gear 607 and the first block 608 are meshed and connected, and the gear 607 and the second block 609 are meshed and connected.

[0038] The above solution is adopted: when the fixing pin 504 is lowered to grind the welding machine grinding wheel 3, the counterweight block 706 is installed on the extension bar 601, and the weight of the counterweight block 706 makes the small grinding wheel 506 fit tightly with the welding machine grinding wheel 3, so that the user does not need to manually press the small grinding wheel 506 for grinding. By rotating the knob 606, the gear 607 is driven to rotate, and then the first clamping block 608 and the second clamping block 609 are driven to contract, so that the first clamping block 608 and the second clamping block 609 are separated from the interior of the clamping slot 602. At this time, the adjusting block 603 can be slid to adjust the position of the adjusting block 603, and then the position of the counterweight block 706 is adjusted. After the position is adjusted, The first clamping block 608 and the second clamping block 609 are reset so that they are inserted into the clamping slot 602 at the corresponding position. When the counterweight block 706 is close to the small grinding wheel 506, the pressure is reduced, and when the counterweight block 706 is away from the small grinding wheel 506, the pressure is increased, thereby adjusting the force pressing the small grinding wheel 506 without changing the number of small grinding wheels 506. The pressure can be quickly adjusted according to the degree of wear in different areas of the welding machine grinding wheel 3. After the grinding is completed, the limit plate 704 is rotated counterclockwise to remove the excess counterweight block, and the surface roughness of the welding machine grinding wheel 3 is detected with a feeler gauge. If it does not meet the standard, the above steps can be repeated, and the pressure can be accurately adjusted by fine-tuning the position of the counterweight block until the grinding accuracy requirement is met.

[0039] like Figures 1 to 9As shown, the pressurizing mechanism 7 includes a mounting frame 701, a mounting seat 702 and a limit block 703. The mounting frame 701 is movably connected to the inside of the support block 604. The bottom end of the mounting frame 701 is fixed with the mounting seat 702. The top end of the mounting seat 702 is fixed with a limit block 703. The internal thread of the mounting seat 702 is connected to the limit plate 704. The mounting seat 702 is provided with two groups. The mounting seats 702 are symmetrically distributed about the central axis of the mounting frame 701. The limit block 703 A slope is provided at the bottom end of the limit plate 704, a slope is provided at the top end of the limit plate 704, a limit rod 705 is arranged inside the limit plate 704, a counterweight block 706 is fixed to the bottom end of the limit rod 705, the inner wall of the limit plate 704 fits into the outer wall of the limit rod 705, the limit plate 704 and the limit rod 705 are slidably connected, a mounting seat 702 is fixed to the bottom end of the counterweight block 706, two groups of limit rods 705 are provided, and the limit rods 705 are symmetrically distributed about the central axis of the counterweight block 706.

[0040] The above scheme is adopted: after inserting the limit rod 705 into the interior of the limit plate 704, the limit plate 704 is rotated to make the limit plate 704 move toward the mounting seat 702, and then the inclined surface opened at the top of the limit plate 704 squeezes the inclined surface at the bottom end of the limit block 703, so that the four groups of open angles of the limit block 703 are contracted, and then the limit rod 705 is fixed, thereby completing the installation of the counterweight block 706 and the mounting frame 701. When the number of counterweight blocks 706 needs to be increased to increase the pressure, the limit rod 705 at the top of the second group of counterweight blocks 706 is inserted into the mounting seat 702 at the top of the first group of counterweight blocks 706. Repeat the above operation to complete the installation of multiple groups of counterweight blocks 706, and then install different numbers of counterweight blocks 706, so that it can adapt to the grinding of welding machine grinding wheels 3 with different wear degrees.

[0041] The working principle and use process of the present invention are as follows: when burrs, oxides, welding slag and other adhesions are found on the welding machine grinding wheel 3, the fixing pin 504 is opened to lower the first connecting rod 502, so that the small grinding wheel 506 is attached to the edge of the welding machine grinding wheel 3, the compressed air pipe is connected to the air supply interface 508, and the air is supplied to the air motor 505 through the second connecting rod 507, so that the air motor 505 rotates and drives the small grinding wheel 506 to rotate, and slowly rotates the welding machine grinding wheel 3 so that the edge of the welding machine grinding wheel 3 is fully polished by the small grinding wheel 506. After use, the first connecting rod 502 is returned to its position, and the fixing pin 504 is inserted into the limiting groove 503 to align the small grinding wheel The wheel 506 is reset, thereby completing the grinding of the welding machine grinding wheel 3. When the fixing pin 504 is lowered to grind the welding machine grinding wheel 3, the counterweight block 706 is installed on the extension bar 601, and the weight of the counterweight block 706 makes the small grinding wheel 506 fit tightly with the welding machine grinding wheel 3, so that the user does not need to manually press the small grinding wheel 506 for grinding. By rotating the knob 606, the gear 607 is rotated, and then the first clamping block 608 and the second clamping block 609 are contracted, so that the first clamping block 608 and the second clamping block 609 are separated from the interior of the card slot 602. At this time, the sliding adjustment block 603 can adjust the position of the adjustment block 603. After the first clamping block 608 and the second clamping block 609 are reset, the first clamping block 608 and the second clamping block 609 are inserted into the corresponding slot 602. When the counterweight 706 is close to the small grinding wheel 506, the pressure is reduced, and when the counterweight 706 is away from the small grinding wheel 506, the pressure is increased. Thus, the force of pressing the small grinding wheel 506 is adjusted without changing the number of small grinding wheels 506. The pressure can be quickly adjusted according to the degree of wear of different areas of the welding machine grinding wheel 3. After the limiting rod 705 is inserted into the interior of the limiting disk 704, the limiting disk 704 is rotated so that the limiting disk 704 moves toward the mounting seat 702. Then, the inclined surface at the top of the limiting plate 704 squeezes the inclined surface at the bottom of the limiting block 703, causing the four groups of open angles of the limiting block 703 to shrink, and then the limiting rod 705 is fixed, thereby completing the installation of the counterweight block 706 and the mounting frame 701. When the number of counterweight blocks 706 needs to be increased to increase the pressure, the limiting rod 705 at the top of the second group of counterweight blocks 706 is inserted into the mounting seat 702 at the top of the first group of counterweight blocks 706. Repeat the above operation to complete the installation of multiple groups of counterweight blocks 706, and then install different numbers of counterweight blocks 706, so that it can adapt to the grinding of welding machine grinding wheels 3 with different wear degrees.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A welding wheel online grinding device, comprising a processing seat (1), characterized in that: A machine table (2) is fixed on the top of the processing seat (1), a welding machine grinding wheel (3) is installed inside the machine table (2), a connecting plate (4) is fixed on the top of the processing seat (1), a grinding mechanism (5) is installed on one end of the connecting plate (4), an adjusting mechanism (6) is installed on one end of the grinding mechanism (5), and a pressurizing mechanism (7) is installed on one end of the adjusting mechanism (6); The grinding mechanism (5) comprises an extension frame (501), a first connecting rod (502) and a limiting groove (503); the extension frame (501) is fixed to the top end of the connecting plate (4); the first connecting rod (502) is rotatably connected to the interior of the extension frame (501); one end of the first connecting rod (502) is provided with a limiting groove (503); a fixing pin (504) is installed on the exterior of the extension frame (501); an air motor (505) is fixed to the exterior of the first connecting rod (502); a small grinding wheel (506) is fixed to the rotating end of the air motor (505); an input end of the air motor (505) is connected to a second connecting rod (507); one end of the second connecting rod (507) is connected to an air supply interface (508); The adjustment mechanism (6) comprises an extension bar (601), a slot (602) and an adjustment block (603); the extension bar (601) is fixed to the outside of the first connecting rod (502); the extension bar (601) is provided with a slot (602) inside; and the extension bar (601) is movably connected to the adjustment block (603) inside.

2. The welding wheel online grinding device according to claim 1, characterized in that: The width of the small grinding wheel (506) is equal to the width of the welding machine grinding wheel (3), and the diameter of the small grinding wheel (506) is 8 cm.

3. The welding wheel online grinding device according to claim 1, characterized in that: A supporting block (604) is fixed to the bottom end of the adjusting block (603), a third connecting rod (605) is movably connected to the inside of the adjusting block (603), a knob (606) is fixed to the outside of the third connecting rod (605), a gear (607) is fixed to the outside of the third connecting rod (605), a first clamping block (608) is movably connected to the inside of the adjusting block (603), and a second clamping block (609) is movably connected to the inside of the adjusting block (603).

4. The welding wheel online grinding device according to claim 1, characterized in that: A sliding groove is provided inside the extension strip (601), the inner wall of the adjustment block (603) is in contact with the outer wall of the extension strip (601), and the adjustment block (603) and the extension strip (601) are slidably connected.

5. The welding wheel online grinding device according to claim 1, characterized in that: The card slots (602) are provided in two groups, and the card slots (602) are symmetrically distributed about the central axis of the extension strip (601). The card slots (602) are provided in several groups, and the card slots (602) are arranged at equal intervals.

6. The welding wheel online grinding device according to claim 3, characterized in that: The third connecting rod (605) and the adjusting block (603) are rotatably connected, and two groups of knobs (606) are provided. The knobs (606) are symmetrically distributed about the central axis of the third connecting rod (605). The outer walls of the first clamping block (608) and the second clamping block (609) fit the inner wall of the adjusting block (603). The first clamping block (608) and the adjusting block (603) are slidably connected, and the second clamping block (609) and the adjusting block (603) are slidably connected.

7. The welding wheel online grinding device according to claim 3, characterized in that: The outer wall of the gear (607) is provided with a plurality of groups of teeth, the outer wall of the first clamping block (608) is provided with a plurality of groups of teeth, and the outer wall of the second clamping block (609) is provided with a plurality of groups of teeth. The gear (607) and the first clamping block (608) are meshed and connected, and the gear (607) and the second clamping block (609) are meshed and connected.

8. The welding wheel online grinding device according to claim 1, characterized in that: The pressurizing mechanism (7) comprises a mounting frame (701), a mounting seat (702) and a limiting block (703); the mounting frame (701) is movably connected to the interior of the support block (604); the mounting seat (702) is fixed at the bottom end of the mounting frame (701); the limiting block (703) is fixed at the top end of the interior of the mounting seat (702); the interior of the mounting seat (702) is threadedly connected to a limiting disk (704); a limiting rod (705) is provided inside the limiting disk (704); and a counterweight (706) is fixed at the bottom end of the limiting rod (705).

9. The welding wheel online grinding device according to claim 8, characterized in that: Two groups of mounting seats (702) are provided. The mounting seats (702) are symmetrically distributed about the central axis of the mounting frame (701). The bottom end of the limiting block (703) is provided with an inclined surface, and the top end of the limiting plate (704) is provided with an inclined surface.

10. The welding wheel online grinding device according to claim 8, characterized in that: The inner wall of the limiting plate (704) fits the outer wall of the limiting rod (705), the limiting plate (704) and the limiting rod (705) are slidably connected, the bottom end of the counterweight (706) is fixed with a mounting seat (702), and the limiting rod (705) is provided with two groups, and the limiting rods (705) are symmetrically distributed about the central axis of the counterweight (706).

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