Roller way on-line maintenance method and roller way on-line maintenance device

Abstract

The invention discloses a roller way on-line maintenance method and a roller way on-line maintenance device. A roller with a wear recess in a roller way rotates, the wear recess of the rotating roller is welded until the wear recess is filled with a filled solder, the roller does not need to be detached from the roller way, the wear recess can be welded in cooperation with rotation of the roller, and the wear recess can be welded in the wear recess. And the absolute value of the difference between the height of the filled solder and the depth of the wear recess conforms to the set threshold range, so that the solder filled in the wear recess almost has no height difference with the peripheral wall of the roller, and after the wear recess is filled with the solder, the roller of the roller way can be normally put into use. According to the roller way, the rollers of the roller way do not need to be disassembled, the time period of welding and roller maintenance is completed in the roller rotating process, the efficiency of roller maintenance completed through welding and filling is high, the maintenance time of the roller way is shortened, the maintenance efficiency can be effectively improved, and the technical problems that the maintenance time of the rollers is long and the maintenance efficiency is low are solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of transportation equipment, and in particular, relates to an online roller maintenance method and an online roller maintenance device. Background Art

[0002] The roller table is a transport equipment that uses the rotation of cylindrical rollers to transport rolled products. After long-term transportation of rolled products, the peripheral walls of the rollers in the roller table are easily worn by the rolled products, and coaxial wear depressions are formed on the peripheral walls of the rollers. The wear depressions will reduce the roller surface elevation of the rollers and make the surface of the roller table uneven. The roundness of the rollers will decrease, and the rollers need to be maintained.

[0003] At present, in order to ensure the conveying efficiency of the roller conveyor, a large number of worn rollers need to be disassembled and replaced uniformly. However, this maintenance method requires a lot of manpower and time to dismantle the worn rollers, resulting in a large maintenance workload, long maintenance time and low efficiency. Summary of the invention

[0004] The present application aims to at least to some extent solve the technical problem of long roller maintenance time and low efficiency. To this end, the present application provides a roller online maintenance method and roller online maintenance device.

[0005] The embodiment of the present application provides an online roller maintenance method, which is applied to repair rollers with wear depressions in a conveyor roller, comprising:

[0006] Rotating the roller having the wear depression in the roller table;

[0007] Solder is filled into the wear depression by welding, and the absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range.

[0008] In some or certain embodiments, rotating the roller having the wear depression in the roller track comprises:

[0009] The roller having the wear depression in the roller path is rotated at a uniform speed.

[0010] In some or certain embodiments, the step of welding the wear recess to the solder filling the wear recess comprises:

[0011] The welding speed is the same as the rotation speed of the rollers.

[0012] In some or certain embodiments, the wear depression is an annular depression coaxial with the roller, and the step of filling the wear depression with solder by welding comprises:

[0013] Each time the roller rotates one circle, an annular weld is formed on the wear depression;

[0014] The rollers are rotated multiple times until multiple layers of the annular weld beads form the filled weld material that fills the wear depressions.

[0015] In some or certain embodiments, the wear depression is an annular depression coaxial with the roller, and the step of filling the wear depression with solder by welding comprises:

[0016] Each time the roller rotates one circle, an annular weld is formed on the wear depression, and the annular weld is a wavy annular weld;

[0017] The roller rotates for multiple turns until multiple layers of the annular welds form the filled solder that fills the wear depression, and along the axial direction of the roller, two sides of the filled solder are respectively connected to two sides of the wear depression.

[0018] In some or certain embodiments, the set threshold range is 0 to 0.1 mm.

[0019] In some or certain embodiments, after the solder is filled into the wear depression by welding to form the filled solder, the roller table online maintenance method further includes:

[0020] The filled solder is ground until the filled solder is flush with the peripheral wall of the roller.

[0021] The present application provides an online roller maintenance device for implementing the above-mentioned online roller maintenance method, and the online roller maintenance device comprises:

[0022] A driving mechanism, which is fixedly connected to the frame of the roller table and is provided with a driving part for driving the roller to roll;

[0023] The welding machine is spaced apart from the driving mechanism and is provided with a movable welding gun for welding the wear depression.

[0024] In some or certain embodiments, the driving mechanism comprises:

[0025] A driving element, comprising a base and a driving shaft rotatable relative to the base;

[0026] A driving wheel is coaxially connected to the driving shaft, and a peripheral wall thereof abuts against the roller, and the peripheral wall of the driving wheel is configured as the driving portion.

[0027] In some or certain embodiments, the driving mechanism further comprises:

[0028] The bracket is supported on the frame of the roller table and is fixedly connected to the machine base.

[0029] Advantageous effects provided by one or more embodiments of the present application:

[0030] When a wear depression appears on the roller in the roller conveyor, the roller conveyor can stop conveying the rolled piece, rotate the roller with the wear depression in the roller conveyor, and weld the wear depression of the rotating roller until the wear depression is filled with solder. The roller does not need to be disassembled from the roller conveyor. The wear depression can be welded and placed in the wear depression with the rotation of the roller. The absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range, so that there is almost no height difference between the filled solder in the wear depression and the peripheral wall of the roller. After the wear depression of the roller is filled with the filled solder, the roller of the roller conveyor can be put into use normally. There is no need to disassemble the roller of the roller conveyor. The welding is completed during the rotation of the roller. The time period for roller maintenance is shortened, and the efficiency of roller maintenance is also high. The maintenance time of the roller conveyor is shortened and the maintenance efficiency can be effectively improved, which solves the technical problems of long roller maintenance time and low efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the use status of a roller conveyor in some embodiments or certain embodiments of the present application is shown.

[0033] Figure 2 A side view of a roller conveyor in some embodiments or certain embodiments of the present application is shown.

[0034] Figure 3 A half-section view of a roller in some embodiments or certain embodiments of the present application is shown.

[0035] Figure 4 A flow chart of an online roller maintenance method in some embodiments or certain embodiments of the present application is shown.

[0036] Figure 5 A structural schematic diagram of an online roller maintenance device in some embodiments or certain embodiments of the present application is shown.

[0037] Figure 6 A schematic diagram of the structure of a driving mechanism in some embodiments or certain embodiments of the present application is shown.

[0038] Explanation of the accompanying drawings: 1. driving mechanism; 11. driving part; 12. driving element; 13. driving wheel; 14. bracket; 141. telescopic rod; 142. connecting plate; 2. welding machine; 21. welding gun; 10. roller; 101. wear depression; 20. frame; 100. rolled product. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] The present application will be described below with reference to the accompanying drawings:

[0044] For ease of understanding, we first provide Figure 1 and Figure 2 , Figure 1 A schematic diagram of a roller table in use in some embodiments or certain embodiments of the present application is shown. Figure 2A side view of a roller conveyor in some embodiments or certain embodiments of the present application is shown. Figure 1 and Figure 2 In the figure, the rollers 10 in the roller conveyor are all placed with workpieces 100. When the workpiece 100 with a certain length is transported by the roller conveyor, it will contact the peripheral walls of at least two rollers 10. There is friction between the rollers 10 and the workpiece 100. Corresponding wear depressions 101 are likely to appear at the contact parts of the rollers 10 and the workpiece 100.

[0045] Figure 3 A half-section view of a roller in some embodiments or certain embodiments of the present application is shown, with reference to Figure 3 , Figure 3 1 shows a wear depression 101 on the roller 10. The wear depression 101 can be repaired by the roller table online repair method described below. Figure 3 The wear recess 101 shown in FIG. 1 is an annular recess, and the following description will be based on the case where the wear recess 101 is an annular recess.

[0046] Figure 4 A flow chart of a roller conveyor online maintenance method in some embodiments or certain embodiments of the present application is shown, with reference to Figure 4 The embodiment of the present application provides an online roller maintenance method, which is used to repair rollers with wear depressions in a conveyor roller, comprising:

[0047] S101: Rotate the roller with the wear depression in the roller table.

[0048] S102: Filling the wear depression with solder by welding, and the absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range.

[0049] When a wear depression appears on the roller in the roller conveyor, the roller conveyor can stop conveying the rolled piece, rotate the roller with the wear depression in the roller conveyor, and weld the wear depression of the rotating roller until the wear depression is filled with solder. The roller does not need to be disassembled from the roller conveyor. The wear depression can be welded and placed in the wear depression with the rotation of the roller. The absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range, so that there is almost no height difference between the filled solder in the wear depression and the peripheral wall of the roller. After the wear depression of the roller is filled with the filled solder, the roller of the roller conveyor can be put into use normally. There is no need to disassemble the roller of the roller conveyor. The welding is completed during the rotation of the roller. The time period for roller maintenance is shortened, and the efficiency of roller maintenance is also high. The maintenance time of the roller conveyor is shortened and the maintenance efficiency can be effectively improved, which solves the technical problems of long roller maintenance time and low efficiency to a certain extent.

[0050] In addition, the above method can greatly reduce the maintenance cost of the roller table compared to the method of uniformly replacing the rollers with worn and concave parts with complete rollers. The rollers with worn and concave parts can also be reused to reduce resource waste. Especially for rollers with coaxial annular concave parts formed due to long-term use, welding the rollers during rotation can effectively improve the maintenance efficiency of the rollers.

[0051] It should be noted that the rotation of the roller in the present application is rotation around the axis of the roller itself. During the rotation of the roller in the roller table, different parts of the wear depression on the roller can rotate to contact the welding gun of the welding machine or welding equipment, so the welding machine or welding equipment can complete the filling of the wear depression. The roller table does not transport rolled pieces, and the equipment used to transport rolled pieces in front of the roller table can be stopped and the rolled pieces are not transported to the roller table.

[0052] In step S101 of some or certain embodiments, rotating the roller having the wear depression in the roller table includes:

[0053] Make the rollers with wear depressions on the roller table rotate at a constant speed.

[0054] The roller rotates at a constant speed, which is easy to control on the one hand, and can make the contact between the wear depression of the roller and the welding gun used for welding, such as a welding machine or different welding equipment, more stable on the other hand, so as to improve the quality of the solder filled in the wear depression, which is beneficial to increase the service life of the roller after maintenance.

[0055] In some or certain embodiments, the roller table can be operated so that all rollers in the roller table rotate, that is, rollers with wear depressions in the roller table will also rotate. Repairs can be performed in conjunction with a welding machine or welding equipment.

[0056] It should be noted that the operation of rollers with wear and depressions in the roller table can be achieved by disconnecting the power supply to the roller table and then restarting the operation to rotate the rollers, or by disconnecting the power supply to the roller table and then driving the rollers in the roller table to rotate through auxiliary equipment.

[0057] In some or certain embodiments, the roller may be driven by a transmission mechanism or a driving element, etc., which can realize the rotation of the roller.

[0058] In some or certain embodiments, the rotation speed of the roller may be 50 mm / min to 200 mm / min, which is convenient for realizing rotation maintenance and the quality of the obtained filled solder is also good.

[0059] In some or certain embodiments, for rollers with wear depressions of a certain width and depth, for example, rollers with a wear depression width of 10 mm to 30 mm and a wear depression depth of 2 mm to 5 mm, multi-layer multi-pass welding is required for welding. When multi-layer multi-pass welding is used for welding, the thickness of each annular weld can be 1 mm to 1.5 mm. While ensuring the quality of the final filled solder, the forming efficiency of the filled solder is improved, which is conducive to improving the maintenance efficiency of the roller.

[0060] In some or certain embodiments, in the welding equipment for welding, the welding wire used by the welding gun may be one of welding low carbon steel welding wire, welding low alloy steel welding wire or welding low alloy steel high strength steel welding wire, and the welding parameters may be welding current, welding wire diameter, welding speed, etc. The welding efficiency is high and the welding quality is good.

[0061] In step S102 of some or certain embodiments, filling the wear depression with solder by welding includes:

[0062] The welding speed is the same as the rotation speed of the roller.

[0063] The welding speed is the same as the rotation speed of the roller, which is beneficial to improving the quality of the solder filled in the wear depression, so as to improve the use quality of the roller.

[0064] In some or certain embodiments, when the roller rotates at a constant speed, a welding gun of a welding machine or welding equipment used for welding may be opposite to the wear depression, and a welding wire of the welding gun may extend into the wear depression. The position of the welding gun may be almost fixed, and during the rotation of the roller, the welding gun may achieve a constant speed welding of the wear depression.

[0065] In some or certain embodiments, filling the wear recess with solder by welding may also include:

[0066] Each time the roller rotates one circle, an annular weld bead is formed in the wear depression; the roller rotates multiple circles until multiple layers of annular weld bead form the filled weld that fills the wear depression.

[0067] For wear depressions with smaller widths, the two sides of the straight annular weld can be connected to the two sides of the wear depression. During the roller rotation process, each circle will form an annular weld, and each annular weld is stacked on the previous annular weld until the wear depression is finally filled with solder. The welding is fast, and the quality of the filled solder is good, which can reduce the maintenance time of the roller and reduce the frequency of roller maintenance.

[0068] In some or certain embodiments, depending on the width of the wear depression, multi-layer and multi-pass welding can be used to fill the wear depression, thereby improving the quality of the filled solder and reducing the frequency of roller maintenance.

[0069] In some or certain embodiments, filling the wear depression with solder by welding in step S102 may include:

[0070] Every time the roller rotates one circle, an annular weld is formed in the wear depression, and the annular weld is a wavy annular weld; the roller rotates multiple circles until multiple layers of annular welds are formed to form a filling solder that fills the wear depression, and along the axial direction of the roller, both sides of the filling solder are respectively connected to both sides of the wear depression.

[0071] A wavy annular weld is formed in the wear depression. After the annular weld is stacked, the two sides of the filled solder are connected to the two sides of the wear depression respectively. The absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range, which can meet the roller's support requirements for the rolled piece. In addition, the time required for welding with this filled solder is shorter, which can further shorten the single maintenance cycle of the roller, effectively shorten the maintenance time required for the roller, and effectively improve the maintenance efficiency of the roller.

[0072] In some or certain embodiments, if there are multiple rollers in the roller table with wear depressions, the multiple rollers can be welded and repaired synchronously. If the wear depression of each roller is small in width and shallow in depth, for example, the width of the wear depression is 2mm to 10mm and the depth of the wear depression is 0.5mm to 2mm, a single-layer annular weld is welded in the wear depression during welding, and the single-layer annular weld forms a filling solder. High efficiency and fast maintenance.

[0073] In some or certain embodiments, a plurality of circular weld beads connected in sequence along the circumference of the wear depression may be formed in the wear depression, and the circular weld beads as a whole form a filled solder that fills the wear depression. When the height is close to the peripheral wall of the roller and the two sides of the weld bead are respectively connected to the two sides of the wear depression, the maintenance of the roller can also be completed, meeting the normal transportation requirements of the roller.

[0074] In some or certain embodiments, the welding of wear depressions can be completed by, for example, a welding robot or welding equipment of different models and specifications. The welding robot or welding equipment can also be flexibly configured according to the width of the wear depression and the diameter of the roller, so that the maintenance of the roller is also more flexible.

[0075] In some or certain embodiments, the threshold value range is set to 0-0.1 mm. Setting the threshold value range to correspond to the data range in this section can effectively improve the surface quality of the roller obtained after maintenance and improve the maintenance effect.

[0076] It should be noted that the minimum value in the threshold range can be set slightly smaller than the minimum value in the above data range, and the maximum value in the threshold range can be set slightly larger than the maximum value in the above data range, and the normal maintenance and subsequent normal use of the roller can also be completed. For example, the height of the solder can be 0.1 mm to 0.5 mm smaller than the depth of the annular depression. The normal maintenance and subsequent normal use of the roller can also be completed.

[0077] In some or certain embodiments, after welding the wear depression to fill the wear depression with solder, the roller table online maintenance method further comprises:

[0078] Grind the filler solder until it is flush with the circumferential wall of the roller.

[0079] After the wear depressions are filled with solder, the filled solder is ground until the filled solder is flush with the peripheral wall of the roller, which can further improve the flatness of the peripheral wall of the roller and is beneficial to improving the transportation effect of the roller.

[0080] In some or certain embodiments, the grinding can be performed by a grinder or a polisher, which is beneficial to improving the maintenance efficiency of the roller.

[0081] In some or certain embodiments, before the wear depression is filled with solder by welding, the roller table online maintenance method may include: cleaning the wear depression, which is beneficial to improving the quality of the subsequent solder filling in the wear depression of the roller.

[0082] In some or certain embodiments, the wear depressions may be cleaned by a polishing wheel tool, and the peripheral wall of the roller may also be cleaned at the same time, which is beneficial to improving the quality of the roller after maintenance.

[0083] Based on the same inventive concept, Figure 5 FIG. 1 shows a schematic diagram of a roller conveyor online maintenance device in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 5 The present application provides an online roller maintenance device for implementing the above-mentioned online roller maintenance method. The online roller maintenance device comprises:

[0084] The driving mechanism 1 is fixedly connected to the frame 20 of the roller table and is provided with a driving part 11 for driving the roller 10 to roll.

[0085] The welding machine 2 is spaced apart from the driving mechanism 1 and is provided with a movable welding gun 21 for welding the wear depression 101 .

[0086] The roller table online maintenance method and its effect can be referred to above, and will not be described here in detail. By adding a driving mechanism 1, the roller 10 with the wear depression 101 can be driven separately through the driving part 11 of the driving mechanism 1, which can reduce the maintenance cost required for maintaining the roller 10. The welding machine 2 separated from the driving mechanism 1 can weld and fill the wear depression 101 through the welding gun 21 to complete the maintenance of the roller 10.

[0087] In some or certain embodiments, the welding machine 2 may be a two-person welding machine or a two-guard welding machine, etc. The welding quality of the two-person welding machine is better, and the use cost of the two-guard welding machine is lower.

[0088] Figure 6 FIG. 1 shows a schematic diagram of a driving mechanism in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 6 In some or some embodiments, the driving mechanism 1 comprises:

[0089] The driving element 12 is provided with a base and a driving shaft (not shown) rotatable relative to the base.

[0090] The driving wheel 13 is coaxially connected to the driving shaft, and the peripheral wall thereof abuts against the roller 10 . The peripheral wall of the driving wheel 13 is configured as the driving portion 11 .

[0091] In the driving element 12 of the driving mechanism 1, the machine base plays a supporting role, and the driving shaft can transmit power to the driving wheel 13 coaxially connected to the driving shaft. The peripheral wall of the driving wheel 13 abuts against the roller 10, and the roller 10 can be driven to rotate by friction. The driving mechanism 1 has a simple structure and can drive the roller 10 to rotate at a relatively low speed, which is conducive to achieving stable welding and improving the quality of the solder filled in the wear depression 101.

[0092] In some or certain embodiments, the driving element 12 may be an electric motor or a motor, or the driving element 12 may also be a magnetic cutting machine, and the four magnetic adsorption wheels of the magnetic cutting machine may be configured as the driving wheels 13. It is easy to implement and has low cost. The multiple magnetic adsorption wheels of the magnetic cutting machine may also drive the roller 10 to rotate at a relatively stable speed.

[0093] In some or certain embodiments, the driving mechanism 1 may also include a driving element 12 and a claw connected to the driving shaft of the driving element 12. For rollers of different specifications and models, the claw may clamp one end of a roller 10 in a part of the roller to drive the roller 10 to rotate.

[0094] In some or certain embodiments, the driving mechanism 1 further comprises:

[0095] The bracket 14 is supported on the frame 20 of the roller table and is fixedly connected to the base.

[0096] The bracket 14 can provide a support point for the driving element 12, and brackets 14 of different shapes can also change the position of the driving element 12, which is conducive to driving rollers 10 of different diameters and improving the flexibility of the roller table online maintenance device.

[0097] In some or certain embodiments, the driving mechanism 1 may also be provided with two brackets 14 distributed on both sides of the base of the driving element 12, each bracket 14 includes at least two telescopic rods 141 arranged side by side and a connecting plate 142 fixedly connected to one end of at least two telescopic rods 141, and the connecting plate 142 is detachably connected to the base. The telescopic rods 141 may also be supported on the cover plate of the roller spacing. The height of the driving mechanism 1 can be adjusted, which is conducive to the application of driving rollers 10 of different diameters, and improves the flexibility of the roller online maintenance device.

[0098] It should be noted that the cover plate of the roller table spacing is a part of the frame 20 of the roller table.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0100] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A roller table online maintenance method, characterized in that: Used to repair rollers with wear and depressions in conveyor roller tables, including: Rotating the roller having the wear depression in the roller table; Solder is filled into the wear depression by welding, and the absolute value of the difference between the height of the filled solder and the depth of the wear depression meets the set threshold range.

2. The roller table online maintenance method according to claim 1, characterized in that: The step of rotating the roller having the wear depression in the roller path comprises: The roller having the wear depression in the roller table is rotated at a uniform speed.

3. The roller table online maintenance method according to claim 2, characterized in that: The method of filling the wear depression with solder by welding comprises: The welding speed is the same as the rotation speed of the rollers.

4. The roller conveyor online maintenance method according to any one of claims 1 to 3, characterized in that: The wear depression is an annular depression coaxial with the roller, and the step of filling the wear depression with solder by welding includes: Each time the roller rotates one circle, an annular weld bead is formed on the wear depression; The rollers are rotated multiple times until multiple layers of the annular weld beads form the filled weld material that fills the wear depressions.

5. The roller conveyor online maintenance method according to any one of claims 1 to 3, characterized in that: The wear depression is an annular depression coaxial with the roller, and the step of filling the wear depression with solder by welding includes: Each time the roller rotates one circle, an annular weld is formed on the wear depression, and the annular weld is a wavy annular weld; The roller rotates for multiple turns until multiple layers of the annular welds form the filled solder that fills the wear depression, and along the axial direction of the roller, two sides of the filled solder are respectively connected to two sides of the wear depression.

6. The roller table online maintenance method according to any one of claims 1 to 3, characterized in that: The set threshold range is 0 to 0.1 mm.

7. The roller conveyor online maintenance method according to any one of claims 1 to 3, characterized in that: After the solder is filled into the wear depression by welding to form the filled solder, the roller table online maintenance method further includes: The filled solder is ground until the filled solder is flush with the peripheral wall of the roller.

8. A roller table online maintenance device, characterized in that: Used to implement the roller conveyor online maintenance method according to any one of claims 1 to 7, the roller conveyor online maintenance device comprises: A driving mechanism, which is fixedly connected to the frame of the roller table and is provided with a driving part for driving the roller to roll; The welding machine is spaced apart from the driving mechanism and is provided with a movable welding gun for welding the wear depression.

9. The roller table online maintenance device according to claim 8, characterized in that: The driving mechanism comprises: A driving element, comprising a base and a driving shaft rotatable relative to the base; A driving wheel is coaxially connected to the driving shaft, and a peripheral wall thereof abuts against the roller, and the peripheral wall of the driving wheel is configured as the driving portion.

10. The roller table online maintenance device according to claim 9, characterized in that: The driving mechanism further comprises: The bracket is supported on the frame of the roller table and is fixedly connected to the machine base.

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