CN117901415A - Vulcanizing method for joint of steel wire rope core conveyer belt and joint of steel wire rope core conveyer belt - Google Patents
Vulcanizing method for joint of steel wire rope core conveyer belt and joint of steel wire rope core conveyer belt Download PDFInfo
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- CN117901415A CN117901415A CN202410208425.5A CN202410208425A CN117901415A CN 117901415 A CN117901415 A CN 117901415A CN 202410208425 A CN202410208425 A CN 202410208425A CN 117901415 A CN117901415 A CN 117901415A
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- steel wire
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 152
- 239000010959 steel Substances 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004073 vulcanization Methods 0.000 claims abstract description 42
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 81
- 238000005520 cutting process Methods 0.000 claims description 54
- 239000012790 adhesive layer Substances 0.000 claims description 32
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 18
- 229920000715 Mucilage Polymers 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 abstract description 60
- 239000003245 coal Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000032258 transport Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
Abstract
The application provides a vulcanization method of a steel wire rope core conveyer belt joint and a steel wire rope core conveyer belt joint, relating to the technical field of cementing methods of steel wire rope core conveyer belts, comprising the following steps: the vulcanizing platform of the vulcanizing machine is respectively provided with a joint platform along the two ends of the length direction of the vulcanizing platform, and the upper surface of the joint platform is flush with the upper surface of the vulcanizing platform to form a working table; placing the belt head of the steel wire rope core conveying belt adjacent to the fracture on a workbench surface and processing to obtain a joint to be glued; splicing the two joints to be glued on the vulcanization platform along the length direction of the vulcanization platform, and gluing the joints into joint parts by using a gluing piece; vulcanizing the joint part by a vulcanizing machine to form a vulcanized joint, and continuously vulcanizing the next joint part after confirming that the quality of the vulcanized joint is qualified; and numbering the vulcanized joint marks with qualified quality. The application adopts a vulcanization mode to realize good butt joint between the joints of the tearing conveyor belt, so that the conveyor belt with the steel wire rope core can normally feed and transport coal, and the production efficiency of the coal mine is ensured.
Description
Technical Field
The application relates to the technical field of cementing methods of steel wire rope core conveying belts, in particular to a vulcanizing method of a steel wire rope core conveying belt joint and a steel wire rope core conveying belt joint.
Background
Coal mines are one of the main energy industries, wherein a steel wire rope core conveyer belt is taken as an important component in coal mine production operation, and the operation condition directly affects the coal mine production efficiency. In order to save mine funds, the conveyer belt is often repaired again after being torn or damaged by an ironware in the running process so as to prolong the service life of the conveyer belt. Therefore, in the related art, fasteners are often adopted for stitching the damaged conveyor belt, but when the amount of coal conveyed by the conveyor belt stitched by the method is too large, secondary damage is easily caused to the joint of the conveyor belt, so that the joint of the conveyor belt is continuously torn, and the conveyor belt cannot normally feed and transport coal, thereby influencing the production efficiency of the coal mine.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, an embodiment of one aspect of the present invention provides a method for vulcanizing a joint of a steel wire rope core conveyor belt, which adopts a vulcanization mode to realize good butt joint between joints of a tearing conveyor belt, so that the steel wire rope core conveyor belt can normally feed and transport coal, and the production efficiency of a coal mine is ensured.
An embodiment of another aspect of the present invention provides a wire rope core conveyor belt joint.
The vulcanizing method for the joint of the steel wire rope core conveyer belt comprises the following steps:
Joint platforms are respectively arranged at two ends of a vulcanizing platform of the vulcanizing machine along the length direction of the vulcanizing platform, and the upper surface of the joint platform is flush with the upper surface of the vulcanizing platform to form a working table;
Placing the belt head of the steel wire rope core conveying belt adjacent to the fracture on the workbench surface and processing the belt head to obtain a joint to be glued;
splicing the two joints to be glued on the vulcanization platform along the length direction of the vulcanization platform, and gluing the joints to form joint parts by using a gluing piece;
Vulcanizing the joint part by the vulcanizing machine to form a vulcanized joint, and continuing vulcanizing the next joint part after confirming that the quality of the vulcanized joint is qualified;
and numbering the vulcanized joint marks with qualified quality.
According to the method for vulcanizing the joints of the steel wire rope core conveyer belt, the working table surface formed by matching the vulcanizing platform and the joint platform provides an operation field for butt joint between the belt heads of the steel wire rope core conveyer belt, and good butt joint between the joints of the torn conveyer belt is realized by sequentially carrying out treatment, splicing, vulcanization and marking numbering on the working table surface, meanwhile, the vulcanized parts of the steel wire rope core conveyer belt can be regularly overhauled in the later use process so as to further ensure the operation safety of the steel wire rope core conveyer belt, and the coal conveying performance of the steel wire rope core conveyer belt can be primarily judged according to the positions and the number of the marking numbering on the steel wire rope core conveyer belt.
In some embodiments, the length direction of the joint platform, the length direction of the joint to be glued, and the length direction of the vulcanization platform are consistent, wherein the length of the joint platform is L, the length of the joint to be glued is L, L is greater than or equal to 3L, and the width of the joint platform and the width of the vulcanization platform are both greater than the width of the joint to be glued.
In some embodiments, the steel wire rope core conveyer belt extends along the length direction of the working table, and the process of placing the belt head of the steel wire rope core conveyer belt adjacent to the fracture on the working table and processing the belt head to obtain the joint to be glued specifically comprises the following steps:
determining a centerline of the tape head;
making a splice reference line and a cut line on each of the upper and lower surfaces of the tape head according to the center line and by a splice length;
peeling a wire rope from the tape head according to the joint datum line and the cutting line;
According to the determined splicing size of the joint to be spliced, cutting off marks are made on each steel wire rope, and cutting off is carried out, so that the joint to be spliced is formed;
And carrying out surface treatment on the joint to be spliced to obtain the joint to be spliced.
In some embodiments, the determining the center line of the belt head specifically includes finding out the center point of each position in the width direction of the belt head at three positions where the distance between the belt head and the wire rope core conveying belt is greater than 1 meter along the length direction of the wire rope core conveying belt, ensuring that the connecting lines of the three center points are straight lines, obtaining the center line, and marking out.
In some embodiments, the making of the joint reference line and the cutting line on each of the upper surface and the lower surface of the tape head according to the center line and in terms of the joint length is specifically:
a reference line is arranged on the belt head along the length direction perpendicular to the steel wire rope core conveying belt;
Drawing the joint datum line on the head adjacent to the tape head by taking the datum line as a benchmark, so that an included angle is formed between the joint datum line and the datum line;
And measuring the joint length along the length direction of the steel wire rope core conveyer belt by taking the joint datum line as a starting end, marking, and drawing the cutting line parallel to the joint datum line on the steel wire rope core conveyer belt by the marking.
In some embodiments, the stripping the wire rope from the tape head according to the joint reference line and the cutting line is specifically:
cutting the belt edges of the belt head to the cutting line along the length direction of the steel wire rope core conveyer belt by the head of the belt head;
cutting off the adhesive layer of the belt head along the cutting line until the adhesive layer is adjacent to the steel wire rope, and forming a cutting surface forming an included angle with the length direction of the steel wire rope core conveyer belt;
Stripping the adhesive layer of the tape head from the cutting surface towards the head direction of the tape head to expose all the steel wire ropes;
any two adjacent steel wire ropes are separated one by one from the head of the belt head towards the direction of the cutting surface, and redundant sizing materials adhered on each steel wire rope are scraped completely.
In some embodiments, the surface treatment is performed on the joint to be spliced to obtain the joint to be spliced, specifically, the cutting surface and the peripheral wall surface of the steel wire rope are polished to be rough surfaces, and adhesive foam attached to the cutting surface and the peripheral wall surface of the steel wire rope is removed to obtain the joint to be spliced.
In some embodiments, the process of splicing the two joints to be glued on the vulcanizing platform along the length direction of the vulcanizing platform and gluing the two joints to be glued into a joint part by using a glue joint part specifically comprises the following steps:
placing the two joints to be glued on the vulcanization platform and butting the two joints to be glued along the length direction of the vulcanization platform;
checking the central lines of the two joints to be glued until the two joints are collinear;
fixing the two joints to be glued on the vulcanization platform by using a clamp;
Turning all the steel wire ropes of the two joints to be glued to two sides, and paving clean white cloth on the two sides in advance;
Dipping the No. 120 gasoline with a clean brush, cleaning the joint to be glued, uniformly coating two to three mucilage times on the joint to be glued after the No. 120 gasoline volatilizes, and coating the mucilage of the next mucilage time after the mucilage of the previous mucilage time is dried;
Cutting a covering rubber and a core rubber sheet with corresponding sizes according to the joint length and the cutting surface, wiping the covering rubber and the core rubber sheet with No. 120 gasoline on the vulcanization platform in advance, airing, bonding the core rubber sheet on the covering rubber, firmly pressing the core rubber sheet, wherein the ends of the covering rubber sheet and the core rubber sheet are staggered in parallel by about 20 mm, wiping the surface of the core rubber sheet, which is away from the covering rubber, with No. 120 gasoline, and airing to prepare the cementing piece;
Placing the cementing piece on the vulcanization platform, putting down all the steel wire ropes of the two joints to be cemented, and pressing the steel wire ropes on the surface of the core rubber sheet, which is away from the covering rubber;
correcting the central lines of the two joints to be glued;
relatively fixing one or two steel wire ropes in the middle of the two joints to be glued, splicing the steel wire ropes one by one from the middle of the joints to be glued to two sides, and ensuring that the steel wire ropes are tensioned and straightened one by one and are uniformly arranged;
coating one or two times of mucilage on the steel wire rope, airing, and using the core rubber sheet to repair two sides of the joint to be glued along the width direction of the belt head to be flush with the belt edge of the original steel wire rope core conveyer belt;
And then, attaching the glue joint pieces to the upper surfaces of the steel wire ropes of the two joints to be glued, and ensuring that the thickness range of the steel wire rope core conveyer belt before vulcanization is 27-29 mm to form the joint part.
In some embodiments, the vulcanizing the joint portion by the vulcanizing machine forms a vulcanized joint, and after confirming that the quality of the vulcanized joint is acceptable, the process of continuing to vulcanize the next joint portion specifically includes:
The vulcanizing machine and the stop iron are installed, so that the inner side distance of the stop iron is consistent with the width of the belt head, and the heating plate of the vulcanizing machine is adjusted to be pressed on the joint part;
Starting a pressurizing pump of the vulcanizing machine to pressurize the joint part until the pressure reaches more than 2MPa, and controlling a heating plate of the vulcanizing machine to heat;
When the temperature of the heating plate of the vulcanizing machine is raised to 130 ℃, exhausting once, continuously raising the temperature to 140 ℃, exhausting once again, and when the temperature is raised to 148 ℃, starting to calculate the vulcanizing time;
during vulcanization, the temperature of the heating plate is kept at 148+/-2 ℃ for 45-50 minutes, so that the vulcanized joint is formed;
Controlling the heating plate to stop heating, keeping the pressure of the pressurizing pump on the vulcanized joint to be not less than 2Mpa, and keeping the heating plate far away from the vulcanized joint after the temperature of the vulcanized joint is reduced to 40 ℃;
And after the quality of the vulcanized joint is qualified, continuously vulcanizing the next joint part.
The joint of the steel wire rope core conveyer belt comprises a steel wire rope core joint layer, a reinforcing layer, a core adhesive layer and a covering adhesive layer.
The steel wire rope core joint layer extends along a first direction, the reinforcing layer extends along the width direction of the steel wire rope core joint layer, and the steel wire rope core joint layer and the reinforcing layer are distributed along the thickness direction of the steel wire rope core joint layer and are embedded in the core rubber layer;
The two covering adhesive layers are positioned on two sides of the core adhesive layer along the thickness direction of the steel wire rope core joint layer, and the covering adhesive layers are connected with the core adhesive layers.
According to the steel wire rope core conveyer belt joint, the steel wire rope core joint layer, the reinforcing layer, the core adhesive layer and the covering adhesive layer are matched to form the steel wire rope core conveyer belt joint, and compared with the prior art, the steel wire rope core conveyer belt joint has the advantages that the reinforcing layer is added, and the extending direction of the reinforcing layer is perpendicular to the extending direction of the steel wire rope core joint layer, so that pulling force along the length direction and the width direction of the steel wire rope core conveyer belt is formed between the reinforcing layer and the steel wire rope core conveyer belt, the steel wire rope core conveyer belt cannot be easily torn when the later-stage steel wire rope core conveyer belt transports coal, and the structural strength of the whole steel wire rope core conveyer belt joint is improved.
In some embodiments, the wire rope core joint layer includes a first joint and a second joint extending along the first direction, each of the first joint and the second joint having a plurality of wire rope joint pairs arranged at intervals along a width direction of the wire rope core joint layer;
Each wire rope joint pair comprises a first wire rope and a second wire rope which are distributed at intervals along the width direction of the wire rope core joint layer, the length of the first wire rope is smaller than that of the second wire rope, the first wire ropes of the first joint and the first wire ropes of the second joint are in one-to-one correspondence, free ends of the first wire ropes and the second wire ropes of the first joint are distributed at intervals along the first direction, butt joints are defined, and the second wire ropes of the first joint and the second wire ropes of the second joint are distributed at intervals along the width direction of the wire rope core joint layer.
In some embodiments, the length of the reinforcing layer is equal to the width of the rope core joint layer, the width of the reinforcing layer being greater than the gap of the butt seam.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
FIG. 1 is a schematic layout of a curing platform, a joint platform and a joint section according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a joint portion according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a steel cord conveyor belt joint in accordance with an embodiment of the present invention.
Reference numerals: 1. vulcanizing platform 2, joint platform, 3, joint part, 4, wire rope core joint layer, 41, first joint, 42, second joint, 411, wire rope joint pair, 4111, first wire rope, 4112, second wire rope, 5, reinforcing layer, 6, core glue layer, 7, covering glue layer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 and 2, the method for vulcanizing the joint of the steel wire rope core conveyer belt according to the embodiment of the invention comprises the following steps:
S1, joint platforms 2 are respectively arranged at two ends of a vulcanizing platform 1 of a vulcanizing machine along the length direction of the vulcanizing platform 1 to form a workbench, and the upper surface of the joint platform 2 forming the workbench surface is level with the upper surface of the vulcanizing platform 1, so that the butt joint between steel wire rope core conveying belts is facilitated;
S2, placing a belt head of the steel wire rope core conveying belt adjacent to the fracture on a workbench surface and processing the belt head to obtain a joint to be glued;
S3, splicing the two joints to be glued on the vulcanization platform 1 along the length direction of the vulcanization platform 1, and gluing the joints to form a joint part 3 by using a gluing piece;
S4, vulcanizing the joint part 3 by a vulcanizing machine to form a vulcanized joint, and after confirming that the quality of the vulcanized joint is qualified, continuously vulcanizing the next joint part 3, otherwise, continuously vulcanizing the vulcanized joint again or repeating the step S2 and the step S3 and re-vulcanizing;
s5, marking and numbering the vulcanized joint with qualified quality, wherein the marking and numbering needs to be bright in color and not easy to abrade, so as to ensure the reliable overhaul of the performance of the steel wire rope core conveyer belt in the later period.
According to the method for vulcanizing the joints of the steel wire rope core conveyer belt, the working table surface formed by the cooperation of the vulcanizing platform 1 and the joint platform 2 provides an operation field for butt joint between the belt heads of the steel wire rope core conveyer belt, and good butt joint between the joints of the tearing conveyer belt is realized by sequentially carrying out treatment, splicing, vulcanization and marking numbering on the working table surface, meanwhile, the vulcanizing parts on the steel wire rope core conveyer belt can be regularly overhauled in the later use process so as to further ensure the operation safety of the steel wire rope core conveyer belt, and the coal conveying performance of the steel wire rope core conveyer belt can be primarily judged according to the positions and the number of the marking numbering on the steel wire rope core conveyer belt.
Specifically, the lengthwise direction of the cure platform 1 may be the left-right direction in fig. 1. The number of the vulcanized joints with qualified quality can be marked according to the sequence of vulcanization, and a basis is further provided for later understanding of the working years of the joints, namely, the number of the vulcanized joints with long vulcanization years is positioned before in the numerical sequence, and the number of the vulcanized joints with short vulcanization years is positioned after in the numerical sequence.
It should be noted that, the quality of the vulcanized joint may be determined by detecting the conditions of the vulcanized joint, including the strength, the surface abrasion state, and the like, and the specific detection method may be adopted in the art.
As shown in fig. 1, in order to widen the working range of the working table, the vulcanizing treatment of the tape heads with various length specifications is satisfied, in some embodiments, the length direction of the joint platform 2 and the length direction of the joint to be glued are consistent with the length direction of the vulcanizing platform 1, that is, the left-right direction in fig. 1, wherein the length of the joint platform 2 is L, the length of the joint to be glued is L, L is greater than or equal to 3L, the width of the joint platform 2 and the width of the vulcanizing platform 1 are both greater than the width of the joint to be glued, so that the two joints to be glued can be spread flat on the working table, and the subsequent straightening and uniform arrangement butt joint operation between the two joints is facilitated.
As shown in fig. 1, in some embodiments, the wire-rope core conveyor extends along the length of the work surface, i.e., the length of the wire-rope core conveyor may be in the left-right direction in fig. 1. The process of the step S2 specifically includes:
a. the central line of the belt heads is determined, so that centering and butt joint can be conveniently realized between the belt heads in the later period, and the coal conveying performance of the steel wire rope core conveying belt is ensured;
b. A joint reference line and a cutting line are formed on each of the upper and lower surfaces of the head according to the center line and according to the joint length, wherein the joint length is determined by the specific design of the conveying bearing capacity required to be achieved by the steel wire rope core conveying belt, and the design method can be adopted by the prior art. The upper and lower surfaces of the tape head may be in the up-down direction in fig. 1. The setting of the joint datum line can facilitate marking the cutting line according to the joint length;
c. peeling the wire rope from the belt head according to the joint datum line and the cutting line;
d. And according to the determined splicing size of the joint to be spliced, cutting off marks are made on each steel wire rope, cutting off is carried out, and the joint to be spliced is formed, wherein the splicing size of the joint to be spliced is based on the guarantee of the bearing strength of the splicing part, and the joint to be spliced can be specifically designed correspondingly according to the prior art in the field. In addition, the cut-off mark needs to be vivid and not easy to erase;
e. And carrying out surface treatment on the joint to be spliced to obtain the joint to be glued.
In some embodiments, as shown in fig. 2, step a is specifically to find the center point of each position in the width direction of the belt head at three positions where the distance between the belt head and the wire rope core is greater than 1 meter along the length direction of the wire rope core conveyer belt, ensure that the connecting line of the three center points is a straight line, obtain the center line, and mark the center line by scribing.
Specifically, the width direction of the tape head may be the front-rear direction in fig. 2. The center line may be a clear colored and less erasable mark.
It can be understood that, because the belt edge of the steel wire rope core conveyer belt is severely worn and uneven in level, in order to ensure that the edge of the steel wire rope core conveyer belt in the width direction is on a horizontal line after being butted, the found central line is more accurate by taking a three-point mode.
As shown in fig. 1 and 2, in some embodiments, the step b specifically includes:
i. marking a reference line on the belt head along the length direction of the vertical steel wire rope core conveyer belt, namely marking the reference line along the front-back direction in fig. 2, so that the reference line vertically intersects with the center line of the belt head;
ii. The joint reference line is drawn on the head adjacent to the tape head with reference to the reference line such that the joint reference line forms an angle α with the reference line, wherein the angle α may be one of 0 °, 16 °, 22 °, 30 'and 25 °, preferably the angle α=22° 30'. The joint datum line intersects the central line;
And iii, taking the joint datum line as an initial end, measuring the joint length along the length direction of the steel wire rope core conveyer belt, marking a cutting line of the parallel joint datum line on the steel wire rope core conveyer belt by the mark, measuring the joint length along the left-right direction in fig. 2 at the intersection point of the joint datum line and the central line for facilitating the drawing of the cutting line, and marking on the central line.
Specifically, the reference line, the joint reference line, and the cutting line may be marked with marks that are vivid in color and are not easily erased.
As shown in fig. 1 and 2, in some embodiments, the step c specifically includes:
1) Cutting the tape edges of the tape head from the head of the tape head to the cutting line along the length direction of the steel wire rope core conveyer belt, wherein the head of the tape head is the free end of the tape head, the tape edges of the tape head are the adhesive layers adjacent to the outermost steel wire rope in the tape head, and the tape edges on the two sides of the tape head are firstly cut off, so that the subsequent treatment of the adhesive layers on the surfaces of the tape head in the up-down direction in the figure 1 can be facilitated;
2) Cutting down a cutter along a cutting line, cutting off an adhesive layer of the tape head until the adhesive layer is adjacent to the steel wire rope, and cutting the steel wire rope, so that a cutting surface forming an included angle beta with the length direction of the steel wire rope core conveyer belt is formed, wherein the included angle beta can be 30 degrees or 60 degrees, the operation is particularly carried out according to the actual requirements of the site, the cutting surface can extend in a gradually inclined direction from the upper surface of the tape head to the lower surface of the tape head, and the inclined direction forms an obtuse angle with the upper surface or the lower surface of the corresponding tape head;
3) Stripping the adhesive layer of the tape head from the cutting surface towards the head of the tape head to expose all the steel wire ropes;
4) Any two adjacent steel wire ropes are separated one by one from the head of the belt head towards the direction of the cutting surface, and excessive sizing materials adhered on each steel wire rope are scraped completely, so that the influence of the adhered excessive sizing materials on the connection reliability between the steel wire ropes and the adhesive layer is effectively avoided, and the butt joint quality of the steel wire rope core conveyer belt is ensured.
As shown in fig. 1 and fig. 2, in some embodiments, the step e specifically includes polishing the cut surface and the peripheral wall surface of the steel wire rope into rough surfaces, so as to increase the contact area between the subsequent adhesive layer and the cut surface as well as between the cut surface and the steel wire rope, further enhance the connection reliability, ensure the structural strength of the steel wire rope core conveyer belt, and clean adhesive foam attached to the cut surface and the steel wire rope, prevent the adhesive foam from affecting the connectivity between the adhesive layer and the steel wire rope, and obtain the joint to be glued.
As shown in fig. 1 and 2, in some embodiments, the process of step S3 is specifically:
1) Placing two joints to be glued on the vulcanization platform 1, and butting along the length direction of the vulcanization platform 1, namely the left-right direction in fig. 1;
2) Checking the central lines of the two joints to be glued until the two joints to be glued are collinear, and initially completing the centering operation between the two joints to be glued;
3) The two joints to be glued are fixed on the vulcanization platform 1 by the clamp, so that the positioning of the joints to be glued on the vulcanization platform 1 is realized, wherein the specific structure of the clamp can adopt the prior art;
4) Turning all the steel wire ropes of the two joints to be glued to two sides, namely pressing the free ends of the steel wire ropes on the upper surface of the belt head, wherein the two sides are the parts of the upper surface of the belt head, which are not stripped of the adhesive layer, and the two sides are paved with clean white cloth in advance;
5) Dipping the No. 120 gasoline with a clean brush, coating the joint to be glued, uniformly coating two to three times of mucilage on the joint to be glued after the No. 120 gasoline volatilizes, and coating the mucilage of the next time after the mucilage of the previous time is dried;
6) Cutting the covering glue and the core film with corresponding sizes according to the length of the joint and the cutting surface, wiping the covering glue and the core film with No. 120 gasoline on a vulcanization platform 1 in advance, airing, adhering the core film on the covering glue, and firmly pressing the core film, wherein the ends of the covering glue and the core film are staggered in parallel by about 20mm so as to ensure the flatness of the joint surface after vulcanization, wiping the surface of the core film, which is away from the covering glue, with No. 120 gasoline, airing, and manufacturing a cementing piece;
7) Placing the cementing piece on the vulcanization platform 1, putting down all the steel wire ropes of the two joints to be cemented, and pressing the steel wire ropes on the surface of the core rubber sheet, which is away from the covering rubber, namely arranging the vulcanization platform 1, the covering rubber, the core rubber sheet and the steel wire ropes in sequence along the up-down direction in fig. 1;
8) Correcting the central lines of the two joints to be glued;
9) Relatively fixing one or two steel wire ropes in the middle of the two joints to be glued, and splicing the steel wire ropes one by one from the middle of the joints to be glued to two sides, wherein the two sides of the joints to be glued are the front-back direction in fig. 2, and the steel wire ropes are ensured to be tensioned and straightened one by one and are uniformly arranged;
10 Smearing one or two times of mucilage on the steel wire rope, airing, and using a core rubber sheet to repair two sides of a joint to be glued along the width direction of the belt head to be flush with the belt edge of the original steel wire rope core conveyer belt;
11 And then the upper surfaces of the two steel wire ropes of the joints to be glued are attached with the gluing piece, so that the thickness range of the steel wire rope core conveyer belt before vulcanization is ensured to be 27-29 mm, and the joint part 3 is formed.
As shown in fig. 1 and 2, in some embodiments, the process of step S4 is specifically:
1) The vulcanizing machine and the stop iron are installed, so that the inner side distance of the stop iron is consistent with the width of the belt head, the belt head is limited in the width direction of the vulcanizing platform 1, namely in the front-back direction in fig. 2, a heating plate of the vulcanizing machine is adjusted to be pressed on the joint part 3, and the joint part 3 is limited in the up-down direction, namely in the up-down direction in fig. 1;
2) Starting a pressurizing pump of the vulcanizing machine to pressurize the joint part 3 until the pressure reaches more than 2MPa, and controlling a heating plate of the vulcanizing machine to heat;
3) When the temperature of the heating plate of the vulcanizing machine is raised to 130 ℃, exhausting once, continuously raising the temperature to 140 ℃, exhausting once again, and when the temperature is raised to 148 ℃, calculating the vulcanizing time so as to ensure the vulcanizing quality;
4) Keeping the temperature of the heating plate at 148+/-2 ℃ during vulcanization, and vulcanizing for 45-50 minutes to form a vulcanized joint;
5) Controlling the heating plate to stop heating, keeping the pressure of the pressurizing pump on the vulcanizing joint to be not less than 2Mpa, and keeping the heating plate away from the vulcanizing joint after the temperature of the vulcanizing joint is reduced to 40 ℃;
6) After confirming that the quality of the vulcanized joint is acceptable, the next joint portion 3 is continuously vulcanized.
As shown in fig. 2 and 3, a wire rope core conveyer belt joint according to an embodiment of the present invention includes a wire rope core joint layer 4, a reinforcing layer 5, a core adhesive layer 6, and a cover adhesive layer 7.
Wherein, the wire rope core joint layer 4 extends along a first direction, the reinforcing layer 5 extends along the width direction of the wire rope core joint layer 4, and the wire rope core joint layer 4 and the reinforcing layer 5 are arranged along the thickness direction of the wire rope core joint layer 4 and are all pre-buried in the core glue layer 6.
Wherein, cover the glue film 7 and have two and lie in the both sides of the thickness direction of wire rope core joint layer 4 of core glue film 6, cover the glue film 7 and link to each other with core glue film 6.
According to the steel wire rope core conveyer belt joint provided by the embodiment of the application, the steel wire rope core joint layer 4, the reinforcing layer 5, the core adhesive layer 6 and the covering adhesive layer 7 are matched to form the steel wire rope core conveyer belt joint, and compared with the prior art, the steel wire rope core conveyer belt joint has the advantages that the reinforcing layer 5 is added, and the reinforcing layer 5 is perpendicular to the extending direction of the steel wire rope core joint layer 4, so that the traction force along the length direction and the width direction of the steel wire rope core conveyer belt is formed between the reinforcing layer 5 and the reinforcing layer, so that the later steel wire rope core conveyer belt cannot be easily torn when carrying coal, and the structural strength of the whole steel wire rope core conveyer belt joint is improved.
Specifically, the first direction may be a left-right direction in fig. 2. The width direction of the wire rope core joint layer 4 may be the front-rear direction in fig. 2. The thickness direction of the wire rope core joint layer 4 may be the up-down direction in fig. 3. The wire rope core joint layer 4 can be connected with the reinforcing layer 5 or spaced apart from the reinforcing layer, and when the wire rope core joint layer and the reinforcing layer are spaced apart from each other, a core adhesive layer 6 is filled between the spaced gaps. The reinforcing layer may be a flexible member made of a material having a certain strength and ductility, such as reinforcing cloth.
As shown in fig. 2 and 3, in some embodiments, the wire rope core joint layer 4 includes a first joint 41 and a second joint 42 extending in a first direction, each of the first joint 41 and the second joint 42 having a plurality of wire rope joint pairs 411 arranged at intervals in a width direction of the wire rope core joint layer 4;
Each wire rope joint pair 411 includes a first wire rope 4111 and a second wire rope 4112 which are arranged at intervals along the width direction of the wire rope core joint layer 4, the length of the first wire rope 4111 is smaller than that of the second wire rope 4112, the first wire rope 4111 of the first joint 41 corresponds to the first wire rope 4111 of the second joint 42 one by one, free ends of the two are arranged at intervals along the first direction and define a butt joint, and the second wire rope 4112 of the first joint 41 corresponds to the second wire rope 4112 of the second joint 42 one by one and the two are arranged at intervals along the width direction of the wire rope core joint layer 4.
Specifically, the seam gap may be 5mm. The core glue layer 6 may be filled after curing between the butt seam, any adjacent first wire rope 4111 and second wire rope 4112, and between adjacent two second wire ropes 4112 to achieve a reliable connection between the first joint 41 and the second joint 42. The first wire rope 4111 and the second wire rope 4112 each have a free end and a fixed end arranged opposite in the first direction, the free end of the second wire rope 4112 of the first joint 41 being adjacent to the fixed end of the second wire rope 4112 of the second joint 42, the free end of the second wire rope 4112 of the second joint 42 being adjacent to the fixed end of the second wire rope 4112 of the first joint 41. The free end of the second wire rope 4112 of the first connector 41 and the fixed end (i.e., the root) of the second wire rope 4112 of the second connector 42 may be staggered by 100 mm or 150 mm, and similarly, the free end of the second wire rope 4112 of the second connector 42 and the fixed end of the second wire rope 4112 of the first connector 41 may be staggered by 100 mm or 150 mm, which is also set in practical situations.
In addition, the specific number of the wire rope joint pairs 411 is set according to the width of the wire rope core conveyer joints, wherein only the first wire rope 4111 or the second wire rope 4112 may be included in the wire rope joint pair 411 at the most edge in the width direction of the wire rope core conveyer joints.
It can be understood that the first steel wire rope 4111 of the first connector 41 and the first steel wire rope 4111 of the second connector 42 are arranged in a butt joint manner, the second steel wire rope 4112 of the first connector 41 and the second steel wire rope 4112 of the second connector 42 are arranged in a lap joint manner, and the steel wire rope core connector layer 4 adopts the splicing manner, compared with the connection manner of only mutually butt joint between the first connector 41 and the second connector 42, so that the vulcanized steel wire rope core conveyer belt connector has high hardness, and is easy to damage when running to the driving roller.
As shown in fig. 2 and 3, to further increase the strength of the connection between the first joint 41 and the second joint 42, in some embodiments, the length of the reinforcing layer 5 is equal to the width of the wire rope core joint layer 4, and the width of the reinforcing layer 5 is greater than the gap to the seam.
Specifically, the reinforcing layers 5 may be arranged at least three at intervals along the first direction, wherein the three reinforcing layers 5 are respectively located at the butt seam and the overlapping positions of the free ends and the fixed ends of the adjacent two second steel wire ropes 4112.
It will be appreciated that the connection between the first wire rope 4111, the second wire rope 4112 and the core glue layer 6 forms a pulling force of the wire rope core joint along the first direction, and the connection between the reinforcing layer 5 and the core glue layer 6 forms a pulling force of the wire rope core joint along the width direction of the wire rope core conveyer belt, which are matched, so that the tearing force required when the wire rope core conveyer belt is torn is larger, the tearing difficulty is increased, and the structural strength of the wire rope core conveyer belt is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The vulcanizing method for the joint of the steel wire rope core conveyer belt is characterized by comprising the following steps of:
Joint platforms are respectively arranged at two ends of a vulcanizing platform of the vulcanizing machine along the length direction of the vulcanizing platform, and the upper surface of the joint platform is flush with the upper surface of the vulcanizing platform to form a working table;
Placing the belt head of the steel wire rope core conveying belt adjacent to the fracture on the workbench surface and processing the belt head to obtain a joint to be glued;
splicing the two joints to be glued on the vulcanization platform along the length direction of the vulcanization platform, and gluing the joints to form joint parts by using a gluing piece;
Vulcanizing the joint part by the vulcanizing machine to form a vulcanized joint, and continuing vulcanizing the next joint part after confirming that the quality of the vulcanized joint is qualified;
and numbering the vulcanized joint marks with qualified quality.
2. The method for vulcanizing a joint of a wire rope core conveyer belt according to claim 1, wherein the wire rope core conveyer belt extends along the length direction of the working table, and the process of placing the belt head of the wire rope core conveyer belt adjacent to the fracture on the working table and treating the belt head to obtain the joint to be glued is specifically as follows:
determining a centerline of the tape head;
making a splice reference line and a cut line on each of the upper and lower surfaces of the tape head according to the center line and by a splice length;
peeling a wire rope from the tape head according to the joint datum line and the cutting line;
According to the determined splicing size of the joint to be spliced, cutting off marks are made on each steel wire rope, and cutting off is carried out, so that the joint to be spliced is formed;
And carrying out surface treatment on the joint to be spliced to obtain the joint to be spliced.
3. The method of vulcanizing a wire rope core conveyor belt joint according to claim 2, wherein the joint reference line and the cutting line are formed on each of the upper surface and the lower surface of the belt head according to the center line and in terms of joint length, specifically:
a reference line is arranged on the belt head along the length direction perpendicular to the steel wire rope core conveying belt;
Drawing the joint datum line on the head adjacent to the tape head by taking the datum line as a benchmark, so that an included angle is formed between the joint datum line and the datum line;
And measuring the joint length along the length direction of the steel wire rope core conveyer belt by taking the joint datum line as a starting end, marking, and drawing the cutting line parallel to the joint datum line on the steel wire rope core conveyer belt by the marking.
4. The method for vulcanizing a wire rope core conveyer belt joint according to claim 2, wherein the step of peeling the wire rope from the head according to the joint reference line and the cutting line is specifically:
cutting the belt edges of the belt head to the cutting line along the length direction of the steel wire rope core conveyer belt by the head of the belt head;
cutting off the adhesive layer of the belt head along the cutting line until the adhesive layer is adjacent to the steel wire rope, and forming a cutting surface forming an included angle with the length direction of the steel wire rope core conveyer belt;
Stripping the adhesive layer of the tape head from the cutting surface towards the head direction of the tape head to expose all the steel wire ropes;
any two adjacent steel wire ropes are separated one by one from the head of the belt head towards the direction of the cutting surface, and redundant sizing materials adhered on each steel wire rope are scraped completely.
5. The method for vulcanizing a joint of a wire rope core conveyer belt according to claim 4, wherein the surface treatment is performed on the joint to be spliced to obtain the joint to be spliced, specifically, the cutting surface and the peripheral wall surface of the wire rope are polished to be rough surfaces, and adhesive foams attached to the cutting surface and the peripheral wall surface are removed to obtain the joint to be spliced.
6. The method for vulcanizing a joint of a wire rope core conveyer belt according to claim 4, wherein the process of splicing the two joints to be bonded on the vulcanizing platform along the length direction of the vulcanizing platform and bonding the joints into a joint part by using a bonding member comprises the following steps:
placing the two joints to be glued on the vulcanization platform and butting the two joints to be glued along the length direction of the vulcanization platform;
checking the central lines of the two joints to be glued until the two joints are collinear;
fixing the two joints to be glued on the vulcanization platform by using a clamp;
Turning all the steel wire ropes of the two joints to be glued to two sides, and paving clean white cloth on the two sides in advance;
Dipping the No. 120 gasoline with a clean brush, cleaning the joint to be glued, uniformly coating two to three mucilage times on the joint to be glued after the No. 120 gasoline volatilizes, and coating the mucilage of the next mucilage time after the mucilage of the previous mucilage time is dried;
Cutting a covering rubber and a core rubber sheet with corresponding sizes according to the joint length and the cutting surface, wiping the covering rubber and the core rubber sheet with No. 120 gasoline on the vulcanization platform in advance, airing, bonding the core rubber sheet on the covering rubber, firmly pressing the core rubber sheet, wherein the ends of the covering rubber sheet and the core rubber sheet are staggered in parallel by about 20 mm, wiping the surface of the core rubber sheet, which is away from the covering rubber, with No. 120 gasoline, and airing to prepare the cementing piece;
Placing the cementing piece on the vulcanization platform, putting down all the steel wire ropes of the two joints to be cemented, and pressing the steel wire ropes on the surface of the core rubber sheet, which is away from the covering rubber;
correcting the central lines of the two joints to be glued;
relatively fixing one or two steel wire ropes in the middle of the two joints to be glued, splicing the steel wire ropes one by one from the middle of the joints to be glued to two sides, and ensuring that the steel wire ropes are tensioned and straightened one by one and are uniformly arranged;
coating one or two times of mucilage on the steel wire rope, airing, and using the core rubber sheet to repair two sides of the joint to be glued along the width direction of the belt head to be flush with the belt edge of the original steel wire rope core conveyer belt;
And then, attaching the glue joint pieces to the upper surfaces of the steel wire ropes of the two joints to be glued, and ensuring that the thickness range of the steel wire rope core conveyer belt before vulcanization is 27-29 mm to form the joint part.
7. The method of vulcanizing a joint of a wire rope core conveyor belt according to any one of claims 1 to 6, wherein the vulcanizing the joint portion by the vulcanizing machine forms a vulcanized joint, and after confirming that the quality of the vulcanized joint is acceptable, continuing the vulcanizing process of the next joint portion is specifically:
The vulcanizing machine and the stop iron are installed, so that the inner side distance of the stop iron is consistent with the width of the belt head, and the heating plate of the vulcanizing machine is adjusted to be pressed on the joint part;
Starting a pressurizing pump of the vulcanizing machine to pressurize the joint part until the pressure reaches more than 2MPa, and controlling a heating plate of the vulcanizing machine to heat;
When the temperature of the heating plate of the vulcanizing machine is raised to 130 ℃, exhausting once, continuously raising the temperature to 140 ℃, exhausting once again, and when the temperature is raised to 148 ℃, starting to calculate the vulcanizing time;
during vulcanization, the temperature of the heating plate is kept at 148+/-2 ℃ for 45-50 minutes, so that the vulcanized joint is formed;
Controlling the heating plate to stop heating, keeping the pressure of the pressurizing pump on the vulcanized joint to be not less than 2Mpa, and keeping the heating plate far away from the vulcanized joint after the temperature of the vulcanized joint is reduced to 40 ℃;
And after the quality of the vulcanized joint is qualified, continuously vulcanizing the next joint part.
8. A wire rope core conveyor belt joint, comprising:
the steel wire rope core joint layer extends along a first direction, the reinforcing layer extends along the width direction of the steel wire rope core joint layer, and the steel wire rope core joint layer and the reinforcing layer are distributed along the thickness direction of the steel wire rope core joint layer and are embedded in the core rubber layer; and
The two covering adhesive layers are positioned on two sides of the core adhesive layer in the thickness direction of the steel wire rope core joint layer, and the covering adhesive layers are connected with the core adhesive layers.
9. The wire rope core conveyer belt joint according to claim 8, wherein the wire rope core joint layer comprises a first joint and a second joint extending in the first direction, each of the first joint and the second joint having a plurality of wire rope joint pairs arranged at intervals in a width direction of the wire rope core joint layer;
Each wire rope joint pair comprises a first wire rope and a second wire rope which are distributed at intervals along the width direction of the wire rope core joint layer, the length of the first wire rope is smaller than that of the second wire rope, the first wire ropes of the first joint and the first wire ropes of the second joint are in one-to-one correspondence, free ends of the first wire ropes and the second wire ropes of the first joint are distributed at intervals along the first direction, butt joints are defined, and the second wire ropes of the first joint and the second wire ropes of the second joint are distributed at intervals along the width direction of the wire rope core joint layer.
10. The wire rope core conveyer belt joint of claim 9, wherein the length of the reinforcing layer is equal to the width of the wire rope core joint layer, the width of the reinforcing layer being greater than the gap of the butt seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410208425.5A CN117901415A (en) | 2024-02-26 | 2024-02-26 | Vulcanizing method for joint of steel wire rope core conveyer belt and joint of steel wire rope core conveyer belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410208425.5A CN117901415A (en) | 2024-02-26 | 2024-02-26 | Vulcanizing method for joint of steel wire rope core conveyer belt and joint of steel wire rope core conveyer belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117901415A true CN117901415A (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410208425.5A Pending CN117901415A (en) | 2024-02-26 | 2024-02-26 | Vulcanizing method for joint of steel wire rope core conveyer belt and joint of steel wire rope core conveyer belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117901415A (en) |
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2024
- 2024-02-26 CN CN202410208425.5A patent/CN117901415A/en active Pending
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