Cemented carbide composite roll

Abstract

The present application relates to a kind of cemented carbide composite roller.A kind of cemented carbide composite roller, including roll shaft, roll ring and spacer ring, roll shaft is equipped with first stop and second stop, the roll shaft includes at least two sequentially arranged assembly section in axial direction, roll ring and spacer ring are arranged on the assembly section, assembly section is between first stop and second stop, the outer diameter of assembly section in adjacent two assembly sections close to first stop is greater than the outer diameter of assembly section close to second stop;The end of assembly section in adjacent two assembly sections close to second stop is provided with third stop, the partial outer diameter or entire outer diameter of the third stop is less than the outer diameter of the spacer ring or roll ring, and the spacer ring and roll ring are limited between adjacent two third stops or between third stop and first stop or between third stop and second stop.The present application has the advantages of facilitating assembly, ensuring assembly effect, and facilitating staff to observe and judge the wear degree of middle section of composite roller.

Description

TECHNICAL FIELD

[0001] The present application relates to a cemented carbide composite roller, in particular to a cemented carbide composite roller which is convenient to observe whether it is worn to the extent of being scrapped. BACKGROUND

[0002] The cemented carbide composite roller is a consumable product, and when the outer circle is worn to the extent of being scrapped, the composite roller will be replaced. The composite roller disclosed in the patents with publication numbers CN209238695U, CN207076772U, etc. comprises a roller shaft, a roller ring and a spacer ring, and an elastic sealing ring is arranged between the roller ring and the spacer ring. When the roller ring and the spacer ring of the composite roller are worn to the extent that the sealing ring can be seen, it means that the composite roller has been scrapped. In order not to affect production, the composite roller will be replaced before the sealing ring is worn, and therefore relevant observation structures which are convenient for workers to observe and have an outer diameter slightly larger than that of the sealing ring are arranged on the composite roller.

[0003] The composite roller disclosed in the patents with publication numbers CN209334445U, CN100406145C, etc. is provided with a stopper at each end of the roller shaft, and the roller ring and the spacer ring are located between the two stoppers. One of the stoppers is a nut, and the other is integrally formed on the shaft, or both of the stoppers are nuts. Whether the roller ring is scrapped can be judged by observing whether the outer diameters of the stoppers are similar to those of the spacer ring and the roller ring.

[0004] However, the relevant structures for observation and comparison in the above-mentioned solutions are arranged on both sides of all the roller rings and spacer rings, far from the middle section of the composite roller, and it is difficult to judge the wear degree of the roller ring and the spacer ring located in the middle section of the composite roller. The patent with publication number CN220635808U discloses a composite roller comprising a roller shaft, and a limiting ring part extending outward in the circumferential direction is arranged in the middle section of the roller shaft. This solution can judge whether the roller ring is scrapped by comparing and observing the outer diameter of the limiting ring part with that of the similar roller ring or spacer ring.

[0005] However, the composite roller of this solution needs to be turned back and forth during assembly in order to be loaded with the roller ring and the spacer ring from both sides. Since the composite roller is heavy, the assembly is troublesome. The fixed angle of the composite roller needs to be turned by the matching assembly auxiliary equipment, which increases the production cost and makes the production more troublesome. Meanwhile, for the composite roller which needs to be provided with multiple observation structures (such as a longer composite roller), it is difficult to adopt the solution of arranging an integrally formed limiting ring part in the middle section of the composite roller. SUMMARY

[0006] The purpose of the present application is to provide a cemented carbide composite roller which is convenient to assemble, can guarantee the assembly effect, and is convenient for workers to observe and judge the wear degree of the middle section of the composite roller.

[0007] In order to achieve the above object, the present application adopts the following technical scheme: A hard alloy composite roller comprises a roller shaft, a roller ring and a spacer ring, the roller shaft is provided with a first stopper and a second stopper, the roller shaft comprises at least two assembly segments arranged in sequence along the axial direction, the roller ring and the spacer ring are arranged on the assembly segments, the assembly segments are located between the first stopper and the second stopper, the outer diameter of the assembly segment close to the first stopper among the adjacent two assembly segments is greater than the outer diameter of the assembly segment close to the second stopper, the end of the assembly segment close to the second stopper among the adjacent two assembly segments is provided with a third stopper, the partial outer diameter or the whole outer diameter of the third stopper is smaller than the outer diameter of the spacer ring or the roller ring, and the spacer ring and the roller ring are limited between the adjacent two third stoppers or between the third stopper and the first stopper or between the third stopper and the second stopper.

[0008] The first stopper can be a part integrally formed with the roller shaft, can be a mechanical nut fixed on the roller shaft, the second stopper can adopt a mechanical nut of a conventional hard alloy composite roller, and the third stopper can adopt a mechanical nut or a hydraulic nut.

[0009] The staff can not only observe and compare through the first stopper and the second stopper on both sides, but also judge whether the middle section of the composite roller is greatly worn or worn to the extent close to the scrapped degree through the comparison between the outer diameter of the third stopper and the outer diameter of the roller ring and the spacer ring; if the part of the third stopper smaller than the outer diameter of the roller ring is worn, it indicates that the composite roller is close to or reaches the scrapped state. Through the third stopper, the partial or whole outer diameter of which is smaller than the outer diameter of the spacer ring or the roller ring, the staff can judge the wear degree of the middle section of the composite roller through the relative outer diameter change of the third stopper and the roller ring or the spacer ring, so that the replacement can be timely performed, and the production accident caused by excessive wear can be avoided.

[0010] When the hard alloy composite roller of the present application needs to be assembled, the end of the roller shaft for fixing the second stopper is upward, the end with the first stopper is downward, the roller shaft is fixed through a clamp or other conventional ways, then the roller ring and the spacer ring are assembled on the assembly segment closest to the first stopper, then a third stopper is assembled, the spacer ring and the roller ring at the lowermost assembly segment are compressed, then the roller ring and the spacer ring at the second assembly segment from bottom to top are assembled, then the third stopper or the second stopper is assembled according to the number of assembly segments, so that the assembly and locking of the spacer ring and the roller ring on two assembly segments or even more assembly segments can be realized. When the composite roller of the present application is assembled, the composite roller does not need to be turned over by 180 degrees through auxiliary equipment, only needs to be assembled in sequence along the axial direction through conventional ways, so that the process is simplified, and the production cost is lower.

[0011] Preferably, the third stopper comprises an axial first part and an axial second part in the axial direction, the outer diameter of the axial first part is larger than that of the axial second part, and the outer diameter of the axial second part is smaller than that of the spacer ring or the roller ring.

[0012] The different outer diameters of the axial first part and the axial second part of the third stopper make the third stopper better fit the adjacent roller ring or spacer ring, provide better positioning and fixing, enhance the cooperation between the third stopper and the roller ring or spacer ring, and improve the stability and durability of the composite roller.

[0013] Preferably, the third stopper is a hydraulic nut, the axial first part is provided with a pressing port, and the axial second part is provided with a receiving groove for receiving a movable assembly, the receiving groove being in communication with the pressing port.

[0014] The pressing port provided on the axial first part of the third stopper can bear higher pressure, thereby providing greater pre-tightening force and ensuring the stability of the carbide roller ring during use.

[0015] Preferably, the third stopper is matched with a spacer ring, the spacer ring is limited between the third stopper on one assembly section and the spacer ring or roller ring on another assembly section, and the inner diameter of the spacer ring is smaller than that of the adjacent spacer ring or roller ring.

[0016] The use of the spacer ring can provide additional support and protection between the third stopper and the roller ring or spacer ring, enhance the stability of the structure, reduce wear and tear, and improve the durability of the composite roller. The thickness of the spacer ring can be selected according to actual needs and processing and production errors.

[0017] Preferably, the outer diameter of the spacer ring is smaller than that of the axial second part, the spacer ring is provided with an adjusting ring on the circumferential outer side, the inner diameter of the adjusting ring is smaller than that of the axial second part, a sealing ring is arranged between the one side end face of the adjusting ring and the third stopper on one assembly section, and another sealing ring is arranged between the other side end face of the adjusting ring and the spacer ring or roller ring on another assembly section.

[0018] The adjusting ring and the sealing ring on the spacer ring provide better sealing performance, prevent leakage of lubricating oil or cooling liquid, improve the sealing performance of the roller shaft, and reduce maintenance costs and environmental pollution. The adjusting ring can be any existing component with adjustable axial thickness to further ensure the support force between the third stopper and the roller ring or spacer ring close to the first stopper and improve the locking effect of the components on the roller shaft.

[0019] Preferably, the adjusting ring comprises two adjusting ring monomers arranged oppositely, the end faces of the two adjusting ring monomers adjacent to each other are both provided with a plurality of ring-shaped and uniformly spaced matching teeth, the matching teeth have inclined matching surfaces, and the two adjusting ring monomers are fixed by fasteners to maintain the distance between the opposite axial end faces of the adjusting ring.

[0020] The matching teeth on the adjusting ring and the fastener provide adjustable pre-tightening force, which can adjust the pressure on the roller ring and the spacer ring as needed. Through the above-mentioned flexible pre-tightening force adjustment, it is helpful to adapt to different working conditions and improve the service life of the roller ring and the spacer ring. Among them, by tightly fitting the fastener between the two adjusting ring monomers, the distance between the two adjusting ring monomers is maintained; the relative movement of the two adjusting ring monomers can be limited by punching a hole at the abutting position of the matching teeth and tightly fitting a pin-shaped fastener at the hole; or a sheet-shaped or triangular cross-section fastener with a corresponding thickness is selected according to the size of the gap between the two adjusting ring monomers to achieve the distraction fixation of the two adjusting ring monomers.

[0021] As a preferred, the axial two-part circumferential outer side has an extending protrusion extending in the axial direction, and the axial two-part circumferential inner side constitutes a relief groove for accommodating the connection of the adjacent two assembly segments.

[0022] The extending protrusion and the relief groove on the spacer ring provide the necessary space for assembly, simplify the assembly process, and allow the assembly segments of the roller shaft to be adjacent without the need for burr polishing.

[0023] As a preferred, the roller rings are all the same in shape and size, and the circumferential inner side of the assembly segment adjacent to the second stopper in the adjacent two assembly segments is provided with a matching ring, and each matching ring is limited between the adjacent two spacer rings or between the spacer ring and the first stopper or the second stopper or the third stopper.

[0024] The roller rings are the same in shape and size, which improves the consistency and interchangeability of the roller rings and simplifies the maintenance and replacement process. The design of the matching ring makes the positioning of the roller ring on the assembly segment more accurate.

[0025] The present application has the advantages of convenient assembly, guaranteed assembly effect, and convenient observation and judgment of the wear degree of the middle segment of the composite roller by the worker. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a sectional view of an embodiment of the present application.

[0027] Figure 2 It is an enlarged view of the adjacent position of the two assembly segments of an embodiment of the present application.

[0028] Figure 3 It is a structure schematic diagram of an adjusting ring before use of an embodiment of the present application.

[0029] Figure 4 It is a structure schematic diagram of an adjusting ring after use of an embodiment of the present application.

[0030] Figure 5 It is another structure schematic diagram of an adjusting ring after use of an embodiment of the present application. DETAILED DESCRIPTION

[0031] The application will be further described in the light of the drawings and specific embodiments.

[0032] As shown in the drawings, Figure 1 and Figure 2 The embodiment discloses a cemented carbide composite roll, which comprises a roll shaft 1, a roll ring 2 and a spacer ring 3, the roll shaft 1 is provided with a first stop 11 and a second stop 12, the roll shaft 1 itself comprises two assembly segments 10 arranged in sequence along the axial direction, the roll ring 2 and the spacer ring 3 are arranged on the assembly segments 10, the assembly segments 10 are located between the first stop 11 and the second stop 12, the outer diameter of the assembly segment close to the first stop 11 is greater than that of the assembly segment close to the second stop 12, and the end of the assembly segment close to the second stop 12 is provided with a third stop 4. The spacer ring and the roll ring on the assembly segment close to the second stop 12 are limited between the third stop 4 and the second stop 12, and the spacer ring and the roll ring on the assembly segment close to the first stop 11 are limited between the third stop 4 and the first stop 11.

[0033] The first stop 11 of the embodiment is integrally formed on the roll shaft 1, the second stop 12 is a locking nut and is in threaded cooperation with the roll shaft 1, and the third stop 4 is a hydraulic nut and is located at the middle part of the roll shaft 1 and is relatively far away from the second stop 12. During the pressing process, force can be applied to both sides, which can be transmitted to more roll rings 2, thereby improving the use stability of the cemented carbide composite roll.

[0034] The third stop 4 comprises an axial first part 41 and an axial second part 42 along the axial direction, the axial first part 41 is close to the second stop 12, the axial second part 42 is close to the first stop 11, the outer diameter of the axial first part 41 is greater than that of the axial second part 42, and the outer diameter of the axial second part 42 is smaller than the outer diameter of the spacer ring 3 and the outer diameter of the roll ring 2. The axial first part 41 is provided with a pressing port 411, and the axial second part 42 is provided with a containing groove for containing a movable assembly 400, the containing groove is in communication with the pressing port 411. The movable assembly 400 of the embodiment can adopt the movable assembly of the existing hydraulic nut, which comprises a piston and a sealing ring, the sealing ring comprises a high-temperature and high-pressure resistant sealing ring with a circular cross section and a sealing ring with a square cross section, and the sealing rings are both made of rubber.

[0035] The third stop 4 is matched with a grommet 5, the grommet 5 is limited on the circumferential outer side of the assembly segment close to the second stop 12, the grommet 5 is located between the third stop 4 and the roll ring on the assembly segment close to the first stop 11, the inner diameter of the grommet 5 is smaller than that of the roll ring adjacent to the grommet 5, and the outer diameter of the grommet 5 is smaller than the outer diameter of the axial second part 42 of the third stop 4.

[0036] As shown in the drawings, Figures 2 to 5As shown, the grommet 5 is provided with an adjusting ring on the outer side in the circumferential direction, the inner diameter of the adjusting ring is smaller than the outer diameter of the axial second part 42 of the third stopper 4, the adjusting ring comprises two adjusting ring units 6 arranged oppositely, the two adjusting ring units 6 are provided with matching teeth 61 arranged in a ring shape and uniformly spaced on the adjacent end faces, the matching teeth 61 have inclined matching surfaces, and the two adjusting ring units 6 are fixed by fasteners 62 to maintain the distance between the opposite two end faces of the adjusting ring. The grommet 5 has an extending protrusion 51 extending in the axial direction on the outer edge side in the circumferential direction, the connecting part of the two adjacent assembly segments 10 is chamfered, and the inner side in the circumferential direction of the grommet 5 forms a displacement groove for the connecting part of the two adjacent assembly segments, the displacement groove comprises a first displacement groove 52 and a second displacement groove 53, the maximum inner diameter of the first displacement groove 52 is greater than that of the second displacement groove 53, and the first displacement groove 52 and the second displacement groove 53 form a stepped groove structure. As shown in Figure 4 and Figure 5 As shown, the fastener 62 of the embodiment can be in the form of a pin or a sheet, and is fixed by being inserted and tightly fitted between the two adjacent adjusting ring units 6.

[0037] As shown in Figure 1 and Figure 2 The embodiment is provided with a plurality of sealing rings, the sealing rings comprise first sealing rings 18 located on both sides of the adjusting ring, and second sealing rings 19 located between the roll ring 2 and the spacer ring 3 and between the third stopper 4 and the roll ring 2, one of the first sealing rings has the same radial position (height) as the second sealing ring 19, and the other first sealing ring has a different radial position from the second sealing ring 19. There is a first sealing ring 18 between the end face of the adjusting ring and the third stopper 4 and between the other end face of the adjusting ring and the adjacent roll ring, the radial positions of the two first sealing rings 18 are different, and the circumferential inner side of the circumferential outer edge of the first sealing ring at the axial second part 42 of the third stopper 4 is opposite to the circumferential inner side of the circumferential outer edge of the other first sealing ring. The positions of the two first sealing rings on both sides of the adjusting ring are different, and under the same gap cooperation, the gap change of the first sealing ring is small even if there is a tilt during the pressing process, and the resistance of the entire structure to the pressure is greatly improved under the same sealing ring and the same gap cooperation.

[0038] The shapes and sizes of all the roll rings 2 of the embodiment are the same, the outer diameters and axial lengths of all the spacer rings 3 are the same, the inner diameter of the spacer ring on the assembly segment close to the second stopper 12 is smaller than the inner diameter of the spacer ring on the assembly segment close to the first stopper 11, and the roll ring circumferential inner side on the assembly segment close to the second stopper 12 is provided with a matching ring 7, and the two matching rings 7 of the embodiment are limited between the spacer ring and the second stopper 12 and between the spacer ring and the third stopper 4. Among them, the axial length of the matching ring 7 of the embodiment is smaller than the axial length of the roll ring 2, and the axial length of the matching ring 7 is at least four-fifths of the axial length of the roll ring 2. Among them, the grommet 5, the spacer ring 3 and the matching ring 7 are made of Cr 12The material manufacturing, cooperation ring 7 is installed between the roll ring 2 and the roll shaft 1 through the gap cooperation mode.

[0039] The embodiment has the advantages of convenient assembly, guaranteed assembly effect, and convenient observation and judgment of the wear degree of the middle section of the composite roll by the staff.

Claims

1. A cemented carbide composite roller, comprising a roller shaft, a roller ring and a spacer ring sleeved and fixed on the roller shaft, wherein the roller shaft is provided with a first stop and a second stop, characterized in that: The roller shaft includes at least two assembly sections arranged sequentially along the axial direction. A roller ring and a spacer ring are disposed on the assembly section. The assembly section is located between a first stop and a second stop. The outer diameter of the assembly section closer to the first stop is larger than the outer diameter of the assembly section closer to the second stop in two adjacent assembly sections. A third stop is provided at the end of the assembly section near the second stop in two adjacent assembly sections. Part or all of the outer diameter of the third stop is smaller than the outer diameter of the spacer ring or roller ring. The spacer ring and roller ring are restricted between two adjacent third stops, between the third stop and the first stop, or between the third stop and the second stop.

2. The cemented carbide composite roller according to claim 1, characterized in that: The third stop member includes an axial part and an axial part along the axial direction. The outer diameter of the axial part is larger than the outer diameter of the axial part, and the outer diameter of the axial part is smaller than the outer diameter of the spacer ring or roller ring.

3. The cemented carbide composite roller according to claim 2, characterized in that: The third stop is a hydraulic nut. The first axial part is provided with a pressure port, and the second axial part is provided with a receiving groove for accommodating the movable component. The receiving groove is connected to the pressure port.

4. A cemented carbide composite roller according to claim 2 or 3, characterized in that: The third stop is equipped with a washer ring, which is constrained between the third stop on one assembly section and a spacer ring or roller ring on another assembly section. The inner diameter of the washer ring is smaller than the inner diameter of the adjacent spacer ring or roller ring.

5. A cemented carbide composite roller according to claim 4, characterized in that: The outer diameter of the washer is smaller than the outer diameter of the two axial parts. An adjustment ring is provided on the outer side of the washer. The inner diameter of the adjustment ring is smaller than the outer diameter of the two axial parts. A sealing ring is provided between one end face of the adjustment ring and the third stop on one assembly section, and between the other end face of the adjustment ring and the spacer or roller ring on another assembly section.

6. A cemented carbide composite roller according to claim 5, characterized in that: The adjusting ring includes two adjusting ring units arranged opposite each other. Each of the two adjusting ring units has a ring of evenly spaced mating teeth on its adjacent end faces. The mating teeth have an inclined mating surface. The two adjusting ring units are fixed by fasteners to maintain the distance between the two opposite end faces of the adjusting ring.

7. A cemented carbide composite roller according to claim 4, characterized in that: The outer edge of the gasket has an axially extending protrusion, and the inner circumferential sides of the two axial parts form a clearance groove to allow space at the connection between two adjacent assembly sections.

8. A cemented carbide composite roller according to claim 1, 2, or 3, characterized in that: The roller rings are all the same shape and size. In two adjacent assembly sections, the roller rings of the assembly section closest to the second stop are provided with a mating ring on the inner side of the circumference. Each mating ring is restricted between two adjacent spacers or between the spacer and the first stop, the second stop, or the third stop.

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