High-strength powder metallurgy combined inner gear ring and preparation method thereof

Abstract

The invention discloses a high-strength powder metallurgy combined inner gear ring and a preparation method thereof, and relates to the technical field of inner gear rings, the high-strength powder metallurgy combined inner gear ring is composed of a section gear ring, a connecting rod, a second embedding rod and a third embedding rod, and an embedding groove is formed in the top of the section gear ring; and mounting grooves are symmetrically formed in the front face and the back face of the section gear ring, second embedding rods are symmetrically installed on the back faces of the connecting rods, and first embedding holes are formed in the inner walls of the back faces of the mounting grooves in a penetrating mode. The four gear ring sections are spliced into the ring shape, then the fixing rods are inserted into the front faces of the gear ring sections and inserted into the third embedding holes, the second embedding rods are inserted into the first embedding holes, and therefore the four gear ring sections can be spliced together to form the combined inner gear ring, and when one gear ring section on the combined inner gear ring is damaged, only the single gear ring section needs to be replaced, and the replacement efficiency is greatly improved. Material waste and fund waste caused by the fact that the whole inner gear ring needs to be replaced when one position of a traditional inner gear ring is damaged are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of internal gear rings, in particular to a high-strength powder metallurgy combined internal gear ring and a preparation method thereof. Background Art

[0002] The inner ring gear is the outer ring gear of the planetary gear. The convex teeth on its inner wall mesh with the outer gear inside the inner ring gear, so that the kinetic energy can be transmitted. When the integrated inner ring gear is damaged in one place, the entire inner ring gear needs to be replaced. The replacement procedure is cumbersome and wastes money.

[0003] The defects of the existing internal gear ring are: 1. Prior art JP2005291237A discloses an internal gear of an internal gear integrated in the inner ring of a bearing. This technology does not have a structure for separately splicing the internal gear ring. When one part of the internal gear ring is damaged, the entire internal gear ring needs to be replaced, which is troublesome and wastes money. Therefore, a high-strength powder metallurgy composite internal gear ring is needed to solve this problem by dividing the internal gear ring into multiple sections and splicing them.

[0004] 2. The prior art JPH0798045A discloses an inner ring gear and its manufacturing. If the inner ring gear is divided into multiple sections and then the multiple sections are spliced ​​together to obtain the inner ring gear, the multiple parts of the inner ring gear are prone to forward and backward displacement during operation, causing the spliced ​​parts of the inner ring gear to be more worn and affecting the life of the inner ring gear. Therefore, a high-strength powder metallurgy composite inner ring gear that can reduce the wear of the spliced ​​parts of the spliced ​​inner ring gear is needed to solve this problem.

[0005] 3. Prior art US20070197340A1 discloses an inner ring gear with an integrated hub portion and a method for manufacturing the same. This technology does not have a structure that is convenient for replacing the inner ring gear. When the inner ring gear is divided into several sections, it is necessary to splice the multiple sections of the partial inner ring gear structure into a complete inner ring gear. The multiple sections need to be connected by bolts. The bolt connection method requires turning the bolts multiple times, and the process is complicated. Therefore, a high-strength powder metallurgy composite inner ring gear that can facilitate disassembly and installation of the spliced ​​inner ring gear is needed to solve this problem.

[0006] 4. The prior art CN106122446B discloses an inner gear ring and unit teeth constituting the inner gear ring, which reduces the processing difficulty in the preparation process. If this technology divides the inner gear ring into multiple sections and then splices the multiple sections into a complete spliced ​​inner gear ring, the inner gear ring will easily cause friction and heat between the connecting parts during operation, thereby aggravating the loss of the inner gear ring. Therefore, a high-strength powder metallurgy composite inner gear ring is needed to dissipate the heat of the contact parts of each component of the spliced ​​inner gear ring in time to solve this problem. Summary of the invention

[0007] One purpose of the present application is to provide a high-strength powder metallurgy composite internal gear ring and a preparation method thereof, which can solve the technical problems raised in the prior art.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-strength powder metallurgy combined internal gear ring, the high-strength powder metallurgy combined internal gear ring is composed of a segment gear ring, a connecting rod, a second interlocking rod and a third interlocking rod, the top of the segment gear ring is provided with an interlocking groove, the front and back sides of the segment gear ring are symmetrically provided with mounting grooves, the back side of the connecting rod is symmetrically provided with a second interlocking rod, both sides of the connecting rod are symmetrically provided with fourth interlocking holes, a spring is installed on one side inner wall of the fourth interlocking hole, one end of the spring is provided with a third interlocking rod, a protrusion is installed on the front side of the third interlocking rod, an interlocking hole one is penetrated through the back inner wall of the mounting groove, and the second interlocking rod is located inside the first interlocking hole, an interlocking hole two is provided on one side inner wall of the mounting groove, and the third interlocking rod is located inside the second interlocking hole.

[0009] Preferably, convex teeth are arranged on the inner wall of the segment gear ring, and a through hole is penetrated through the front side of the segment gear ring.

[0010] Preferably, the high-strength powder metallurgy composite internal gear ring also includes a chimeric block and a fixing rod, a chimeric block is installed on one side of the segment gear ring, and the chimeric block is located inside the chimeric groove at the top of the adjacent segment gear ring, a fixing rod is installed through the front side of the segment gear ring, and one end of the fixing rod passes through the back side of the segment gear ring, a chimeric hole three is opened through the front side of the chimeric block, and the fixing rod is located on the inner side of the chimeric hole three.

[0011] Preferably, the interior of the mounting groove is filled with thermal conductive silicone grease.

[0012] Preferably, a leak-proof membrane is symmetrically installed on the front side of the segment gear ring, and the leak-proof membrane is located in front of the installation groove.

[0013] Preferably, the leakproof film is a polyvinyl chloride film or a polyethylene film.

[0014] Preferably, the outer side of the fixing rod is coated with glue.

[0015] Preferably, the adhesive is hot melt adhesive.

[0016] Preferably, the method for preparing the high-strength powder metallurgy composite internal gear ring comprises the following steps: S1. Forming a one-piece workpiece having a segmented gear ring, an engaging block, a convex tooth, an engaging groove and a mounting groove by a powder metallurgy method; S2, using a drilling machine to respectively machine a through hole, a first embedding hole, a second embedding hole, and a third embedding hole on the one-piece workpiece obtained in step S1; S3, using a powder metallurgy method to form a workpiece having a connecting rod, a second interlocking rod, a fourth interlocking hole and a protrusion, and then connecting the spring to the inner wall of one side of the fourth interlocking hole by hot melt adhesive, and welding the other end of the spring to the third interlocking rod; S4, splice the four segment gear rings into a ring shape, and fit the interlocking blocks into the interlocking grooves of the adjacent segment gear rings, then apply hot melt adhesive to the outside of the fixing rod, and then insert the fixing rod into the front of the segment gear ring and into the third interlocking hole; S5. Insert the second interlocking rod of the workpiece in step S3 into the first interlocking hole, and then insert the third interlocking rod into the second interlocking hole, so as to facilitate the connection of two adjacent segment gear rings. The moving protrusion drives the third interlocking rod to be pulled out of the second interlocking hole to facilitate the disassembly and replacement of the segment gear ring.

[0017] Preferably, the S5 further includes the following steps: S51, filling the inside of the installation groove with thermal conductive silicone grease, and then gluing the anti-leakage film to the front and back sides of the segment gear ring to seal the installation groove by gluing.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention splices four segment gear rings into a ring shape, then inserts a fixing rod into the front face of the segment gear ring and into the inside of the third interlocking hole, and inserts the second interlocking rod into the inside of the first interlocking hole, so that the four segment gear rings can be spliced ​​together to form a combined internal gear ring. When a segment gear ring on the combined internal gear ring is damaged, only a single segment gear ring needs to be replaced, thereby reducing the material waste and capital waste caused by the need to replace the entire internal gear ring when one segment gear ring is damaged in the traditional internal gear ring.

[0019] 2. The present invention enables the interlocking block to be interlocked in the interlocking groove of the adjacent segment gear ring, and then the outer side of the fixing rod is coated with hot melt adhesive, and the fixing rod is inserted into the segment gear ring and the interlocking block. The interlocking block can avoid the mutual displacement of the two adjacent segment gear rings by interlocking into the interlocking groove. The fixing rod can be inserted into the segment gear ring and the interlocking block, thereby avoiding the interlocking block from moving left and right in the interlocking groove, and further ensuring the stability of the connection between the two adjacent segment gear rings.

[0020] 3. The present invention then inserts the interlocking rod three into the interlocking hole two, thereby conveniently connecting two adjacent segment gear rings, and drives the interlocking rod three to be pulled out of the interlocking hole two by moving the protrusion, so as to facilitate the disassembly and replacement of the segment gear ring.

[0021] 4. The present invention fills the inside of the installation groove with thermal grease, and the thermal grease is used to conduct heat to the contact portion between the connecting rod and the segment gear ring inside the installation groove, thereby increasing the heat transfer speed from the connecting rod to the segment gear ring, thereby reducing the damage caused by heat accumulation of the connecting rod, thereby increasing the service life of the combined inner gear ring, and then using a gluing method to glue a leak-proof film to the front and back sides of the segment gear ring to seal the installation groove, thereby reducing the leakage of the thermal grease inside the installation groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the segment gear ring splicing structure of the present invention; Figure 3 It is a schematic diagram of the structure of the segment gear ring of the present invention; Figure 4 It is the radial diagram of the segment gear ring of the present invention; Figure 5 It is a schematic diagram of the structure of A of the present invention; Figure 6 It is a schematic diagram of the connecting rod structure of the present invention; Figure 7 It is a schematic diagram of the three structures of the interlocking rod of the present invention; Figure 8 Schematic diagram of the chimeric block structure of the present invention Fig. 9 It is a flow chart of the preparation method of the present invention.

[0023] In the figure: 1, segmented gear ring; 2, interlocking block; 3, convex tooth; 4, through hole; 5, interlocking groove; 6, mounting groove; 7, connecting rod; 8, interlocking rod two; 9, interlocking hole four; 10, spring; 11, interlocking rod three; 12, convex block; 13, interlocking hole one; 14, interlocking hole two; 15, fixing rod; 16, interlocking hole three; 17, leak-proof membrane. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8A high-strength powder metallurgy combined internal gear ring, the high-strength powder metallurgy combined internal gear ring consists of a segment gear ring 1, a connecting rod 7, a second interlocking rod 8 and a third interlocking rod 11. An interlocking groove 5 is provided on the top of the segment gear ring 1, and a mounting groove 6 is symmetrically provided on the front and back of the segment gear ring 1. The second interlocking rod 8 is symmetrically provided on the back of the connecting rod 7. Interlocking holes 9 are symmetrically provided on both sides of the connecting rod 7. A spring 10 is provided on the inner wall of one side of the interlocking hole 9. An interlocking rod 3 11 is provided on one end of the spring 10. A convex block 12 is provided on the front of the third interlocking rod 11. An interlocking hole 13 is provided on the inner wall of the back side of the mounting groove 6, and the second interlocking rod 8 is located inside the first interlocking hole 13. An interlocking hole 2 14 is provided on the inner wall of one side of the mounting groove 6, and the third interlocking rod 11 is located inside the second interlocking hole 14. Four segment gear rings 1 are spliced ​​into an annular combined internal gear ring, and the convex tooth 3 can be engaged with an external gear placed inside the segment gear ring 1. The engaging groove 5 can provide an engaging position for the engaging block 2, and the mounting groove 6 can provide a storage space for the connecting rod 7. The connecting rod 7 can connect the two engaging rods 2 8, and the engaging rod 2 8 can be engaged into the engaging hole 1 13, so that two adjacent segment gear rings 1 are spliced ​​together. The engaging hole 4 9 can provide an installation position for the spring 10, and at the same time can provide a guide for the engaging rod 3 11, and provide a storage space for the engaging rod 3 11. The engaging rod 3 11 can fix the connecting rod 7 by engaging into the engaging hole 2 14 to prevent the connecting rod 7 and the engaging rod 2 8 from falling off from the mounting groove 6. The protrusion 12 can provide a pushing position for people to push the engaging rod 3 11, so that people can push the protrusion 12 to drive the engaging rod 3 11 to leave the engaging hole 2 14. The engaging hole 13 can provide an insertion position for the engaging rod 2 8, and the engaging hole 2 14 can provide an insertion position for the engaging rod 3 11.

[0028] The inner wall of the segment gear ring 1 is provided with convex teeth 3, and the front side of the segment gear ring 1 is penetrated with a through hole 4, which can be a channel for inserting bolts. The convex teeth 3 can mesh with the external gear placed inside the segment gear ring 1, thereby transmitting kinetic energy.

[0029] The high-strength powder metallurgy composite internal gear ring also includes a chimeric block 2 and a fixing rod 15. A chimeric block 2 is installed on one side of the segment gear ring 1, and the chimeric block 2 is located inside the chimeric groove 5 at the top of the adjacent segment gear ring 1. A fixing rod 15 is installed through the front of the segment gear ring 1, and one end of the fixing rod 15 passes through the back of the segment gear ring 1. A chimeric hole three 16 is opened through the front of the chimeric block 2, and the fixing rod 15 is located on the inner side of the chimeric hole three 16. The chimeric block 2 can be inserted into the chimeric groove 5 to avoid the mutual displacement of the two adjacent segment gear rings 1. The fixing rod 15 can be inserted into the segment gear ring 1 and the chimeric block 2, thereby avoiding the chimeric block 2 from moving left and right in the chimeric groove 5, further ensuring the stability of the connection between the two adjacent segment gear rings 1. The chimeric hole three 16 can provide an insertion position for the fixing rod 15.

[0030] The inside of the mounting groove 6 is filled with thermal grease, which is used to conduct heat to the contact portion between the connecting rod 7 and the segment gear ring 1 inside the mounting groove 6, thereby increasing the heat transfer rate from the connecting rod 7 to the segment gear ring 1, thereby reducing the damage caused by heat accumulation of the connecting rod 7, thereby increasing the service life of the combined inner gear ring.

[0031] A leakproof membrane 17 is symmetrically installed on the front of the segment gear ring 1, and the leakproof membrane 17 is located in front of the installation groove 6. The leakproof membrane 17 can reduce the leakage of thermal grease inside the installation groove 6. The leakproof membrane 17 is one of polyvinyl chloride film or polyethylene film.

[0032] The outer side of the fixing rod 15 is coated with glue, which is hot melt glue.

[0033] The preparation method of the high-strength powder metallurgy composite internal gear ring comprises the following steps: S1, forming an integral workpiece having a segment gear ring 1, a fitting block 2, a convex tooth 3, a fitting groove 5 and a mounting groove 6 by a powder metallurgy method; S2, using a drilling machine tool to respectively process a through hole 4, a first embedding hole 13, a second embedding hole 14 and a third embedding hole 16 on the integral workpiece obtained in step S1; S3, using a powder metallurgy method to form a workpiece having a connecting rod 7, a second interlocking rod 8, a fourth interlocking hole 9 and a protrusion 12, and then connecting a spring 10 to an inner wall of one side of the fourth interlocking hole 9 by hot melt adhesive, and welding the other end of the spring 10 to the third interlocking rod 11; S4, splice four segment gear rings 1 into a ring shape, and fit the fitting blocks 2 into the fitting grooves 5 of the adjacent segment gear rings 1, then apply hot melt adhesive to the outside of the fixing rod 15, and then insert the fixing rod 15 into the front of the segment gear ring 1 and into the fitting hole 3 16; S5. Insert the second interlocking rod 8 of the workpiece in step S3 into the first interlocking hole 13, and then insert the third interlocking rod 11 into the second interlocking hole 14, so as to facilitate the connection of two adjacent segment gear rings 1. The segment gear rings 1 can be conveniently disassembled and replaced by driving the third interlocking rod 11 to be pulled out of the second interlocking hole 14 by moving the protrusion 12.

[0034] S5 also includes the following steps: S51, filling the interior of the installation groove 6 with heat-conducting silicone grease, and then gluing the anti-leakage membrane 17 to the front and back sides of the segment gear ring 1 to seal the installation groove 6 by gluing.

[0035] Embodiment 1: 1. Forming a one-piece workpiece having a segment gear ring 1, an engaging block 2, a convex tooth 3, an engaging groove 5 and a mounting groove 6 by a powder metallurgy method; 2. Using a drilling machine tool, a through hole 4, a first embedding hole 13, a second embedding hole 14 and a third embedding hole 16 are respectively processed on the integral workpiece obtained in step 1; 3. Using a powder metallurgy method to form a workpiece having a connecting rod 7, a second interlocking rod 8, a fourth interlocking hole 9 and a protrusion 12, and then connecting a spring 10 to an inner wall of one side of the fourth interlocking hole 9 by hot melt adhesive, and welding the other end of the spring 10 to the third interlocking rod 11; Fourth, four segment gear rings 1 are spliced ​​into a ring shape, and the interlocking blocks 2 are interlocked in the interlocking grooves 5 of the adjacent segment gear rings 1, and then the outside of the fixing rod 15 is coated with hot melt adhesive, and then the fixing rod 15 is inserted into the front of the segment gear ring 1 and into the interlocking hole 3 16; 5. Insert the second interlocking rod 8 of the workpiece in step 3 into the first interlocking hole 13, and then insert the third interlocking rod 11 into the second interlocking hole 14, so as to facilitate the connection of two adjacent segment gear rings 1, and drive the third interlocking rod 11 to be pulled out of the second interlocking hole 14 by moving the protrusion 12 to facilitate the disassembly and replacement of the segment gear ring 1; 6. Fill the installation groove 6 with heat-conducting silicone grease, and then glue the anti-leakage membrane 17 to the front and back sides of the segment gear ring 1 to seal the installation groove 6 by gluing.

[0036] Embodiment 2: 1. Forming a one-piece workpiece having a segment gear ring 1, an engaging block 2, a convex tooth 3, an engaging groove 5 and a mounting groove 6 by a powder metallurgy method; 2. Using a drilling machine tool, a through hole 4, a first embedding hole 13, a second embedding hole 14 and a third embedding hole 16 are respectively processed on the integral workpiece obtained in step 1; 3. Using a powder metallurgy method to form a workpiece having a connecting rod 7, a second interlocking rod 8, a fourth interlocking hole 9 and a protrusion 12, and then connecting a spring 10 to an inner wall of one side of the fourth interlocking hole 9 by hot melt adhesive, and welding the other end of the spring 10 to the third interlocking rod 11; Fourth, four segment gear rings 1 are spliced ​​into a ring shape, and the interlocking blocks 2 are interlocked in the interlocking grooves 5 of the adjacent segment gear rings 1, and then the outside of the fixing rod 15 is coated with hot melt adhesive, and then the fixing rod 15 is inserted into the front of the segment gear ring 1 and into the interlocking hole 3 16; 5. Insert the interlocking rod 2 8 of the workpiece in step 3 into the interlocking hole 13, and then insert the interlocking rod 3 11 into the interlocking hole 2 14, so as to conveniently connect two adjacent segment gear rings 1, and drive the interlocking rod 3 11 to be pulled out of the interlocking hole 2 14 by moving the protrusion 12 to facilitate the disassembly and replacement of the segment gear ring 1.

[0037] Embodiment three: 1. Forming a one-piece workpiece having a segment gear ring 1, an engaging block 2, a convex tooth 3, an engaging groove 5 and a mounting groove 6 by a powder metallurgy method; 2. Using a drilling machine tool, a through hole 4, a first embedding hole 13, a second embedding hole 14 and a third embedding hole 16 are respectively processed on the integral workpiece obtained in step 1; 3. Splice four segment gear rings 1 into a ring shape, and fit the interlocking blocks 2 into the interlocking grooves 5 of the adjacent segment gear rings 1, then apply hot melt adhesive to the outside of the fixing rod 15, and then insert the fixing rod 15 into the front of the segment gear ring 1 and into the interlocking hole 3 16; Fourth, fill the installation groove 6 with heat-conducting silicone grease, and then glue the anti-leakage membrane 17 to the front and back sides of the segment gear ring 1 by gluing to seal the installation groove 6.

[0038] Embodiment 4: 1. Forming a one-piece workpiece having a segment gear ring 1, an engaging block 2, a convex tooth 3, an engaging groove 5 and a mounting groove 6 by a powder metallurgy method; 2. Using a drilling machine tool, a through hole 4, a first embedding hole 13, a second embedding hole 14 and a third embedding hole 16 are respectively processed on the integral workpiece obtained in step 1; 3. Forming a workpiece having a connecting rod 7, a second interlocking rod 8 and a protrusion 12 by a powder metallurgy method; Fourth, four segment gear rings 1 are spliced ​​into a ring shape, and the interlocking blocks 2 are interlocked in the interlocking grooves 5 of the adjacent segment gear rings 1, and then the outside of the fixing rod 15 is coated with hot melt adhesive, and then the fixing rod 15 is inserted into the front of the segment gear ring 1 and into the interlocking hole 3 16; 5. Insert the second interlocking rod 8 of the workpiece in step 3 into the first interlocking hole 13; 6. Fill the installation groove 6 with heat-conducting silicone grease, and then glue the anti-leakage membrane 17 to the front and back sides of the segment gear ring 1 to seal the installation groove 6 by gluing.

[0039] Working principle: Before using the high-strength powder metallurgy combined internal gear ring, you should first check whether the high-strength powder metallurgy combined internal gear ring has any problems that affect its use. A one-piece workpiece with a segment gear ring 1, a fitting block 2, a convex tooth 3, a fitting groove 5 and a mounting groove 6 is formed by a powder metallurgy method. A through hole 4, a fitting hole one 13, a fitting hole two 14 and a fitting hole three 16 are respectively processed on the one-piece workpiece by a drilling machine. A workpiece with a connecting rod 7, a fitting rod two 8, a fitting hole four 9 and a convex block 12 is formed by a powder metallurgy method. Then, the spring 10 is connected to the inner wall of one side of the fitting hole four 9 by hot melt adhesive. The other end of the spring 10 is welded to the fitting rod three 11. The four segment gear rings 1 are spliced ​​into a ring shape, and the fitting block 2 is fitted into the fitting groove 5 of the adjacent segment gear ring 1. Then, hot melt adhesive is coated on the outside of the fixing rod 15, and then the fixing rod 15 is inserted into the segment gear ring. 1 and inserted into the three interlocking holes 16. The interlocking block 2 can prevent the two adjacent segment gear rings 1 from interlocking and displacing each other by interlocking into the interlocking groove 5. The fixing rod 15 can be inserted into the segment gear ring 1 and the interlocking block 2, thereby preventing the interlocking block 2 from moving in the left and right directions inside the interlocking groove 5, further ensuring the stability of the connection between the two adjacent segment gear rings 1. The interlocking rod 2 8 is inserted into the one interlocking hole 13, and then the interlocking rod 3 11 is inserted into the two interlocking holes 14, so as to facilitate the connection of the two adjacent segment gear rings 1. The interlocking rod 3 11 is driven to be pulled out of the two interlocking holes 14 by the moving protrusion 12, so as to facilitate the disassembly and replacement of the segment gear ring 1. The installation groove 6 is filled with thermal grease, and then the anti-leakage membrane 17 is glued to the front and back sides of the segment gear ring 1 by a gluing method to seal the installation groove 6, so as to reduce the leakage of the thermal grease inside the installation groove 6.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference signs in the claims should not be regarded as limiting the rights involved.

Claims

1. A high-strength powder metallurgy combined internal gear ring, characterized in that: The high-strength powder metallurgy composite internal gear ring is composed of a segment gear ring (1), a connecting rod (7), a second interlocking rod (8) and a third interlocking rod (11). The top of the segment gear ring (1) is provided with an interlocking groove (5). The front and back sides of the segment gear ring (1) are symmetrically provided with mounting grooves (6). The back side of the connecting rod (7) is symmetrically provided with a second interlocking rod (8). Both sides of the connecting rod (7) are symmetrically provided with fourth interlocking holes (9). One of the fourth interlocking holes (9) is provided with a A spring (10) is installed on the side inner wall, and a fitting rod three (11) is installed on one end of the spring (10), and a protrusion (12) is installed on the front side of the fitting rod three (11). A fitting hole one (13) is penetrated through the inner wall of the back side of the installation groove (6), and the fitting rod two (8) is located inside the fitting hole one (13). A fitting hole two (14) is formed on the inner wall of one side of the installation groove (6), and the fitting rod three (11) is located inside the fitting hole two (14).

2. The high-strength powder metallurgy composite internal gear ring according to claim 1, characterized in that: The inner wall of the segment gear ring (1) is provided with protruding teeth (3), and the front surface of the segment gear ring (1) is penetrated by a through hole (4).

3. The high-strength powder metallurgy composite internal gear ring according to claim 1, characterized in that: The high-strength powder metallurgy composite internal gear ring also includes a chimeric block (2) and a fixing rod (15); a chimeric block (2) is installed on one side of the segment gear ring (1), and the chimeric block (2) is located inside the chimeric groove (5) at the top of the adjacent segment gear ring (1); a fixing rod (15) is installed through the front side of the segment gear ring (1), and one end of the fixing rod (15) passes through the back side of the segment gear ring (1); a chimeric hole three (16) is opened through the front side of the chimeric block (2), and the fixing rod (15) is located inside the chimeric hole three (16).

4. The high-strength powder metallurgy composite internal gear ring according to claim 1, characterized in that: The interior of the mounting groove (6) is filled with thermal conductive silicone grease.

5. The high-strength powder metallurgy composite internal gear ring according to claim 1, characterized in that: A leak-proof membrane (17) is symmetrically mounted on the front side of the segment gear ring (1), and the leak-proof membrane (17) is located in front of the mounting groove (6).

6. The high-strength powder metallurgy composite internal gear ring according to claim 5, characterized in that: The leakproof film (17) is a polyvinyl chloride film or a polyethylene film.

7. The high-strength powder metallurgy composite internal gear ring according to claim 1, characterized in that: The outer side of the fixing rod (15) is coated with glue.

8. The high-strength powder metallurgy composite internal gear ring according to claim 7, characterized in that: The glue liquid is hot melt adhesive.

9. A method for preparing a high-strength powder metallurgy composite internal gear ring according to any one of claims 1 to 8, characterized in that: The method for preparing the high-strength powder metallurgy combined internal gear ring comprises the following steps: S1. Forming a one-piece workpiece having a segmented gear ring (1), an engaging block (2), a convex tooth (3), an engaging groove (5) and a mounting groove (6) by a powder metallurgy method; S2, using a drilling machine to respectively machine a through hole (4), a first embedding hole (13), a second embedding hole (14) and a third embedding hole (16) on the one-piece workpiece obtained in step S1; S3, using a powder metallurgy method to form a workpiece having a connecting rod (7), a second interlocking rod (8), a fourth interlocking hole (9) and a protrusion (12), and then connecting a spring (10) to an inner wall of one side of the fourth interlocking hole (9) by hot melt adhesive, and welding the other end of the spring (10) to the third interlocking rod (11); S4, splicing four segment gear rings (1) into a ring shape, and fitting the fitting block (2) into the fitting groove (5) of the adjacent segment gear ring (1), then coating the outer side of the fixing rod (15) with hot melt adhesive, and then inserting the fixing rod (15) into the front side of the segment gear ring (1) and into the fitting hole three (16); S5. Insert the second interlocking rod (8) of the workpiece in step S3 into the first interlocking hole (13), and then insert the third interlocking rod (11) into the second interlocking hole (14), so as to facilitate the connection of two adjacent segment gear rings (1). The segment gear rings (1) can be conveniently disassembled and replaced by driving the third interlocking rod (11) to be withdrawn from the second interlocking hole (14) by moving the protrusion (12).

10. The method for preparing a high-strength powder metallurgy composite internal gear ring according to claim 9, characterized in that: The S5 also includes the following steps: S51, filling the interior of the installation groove (6) with thermal conductive silicone grease, and then gluing the anti-leakage membrane (17) to the front and back sides of the segment gear ring (1) to seal the installation groove (6) by gluing.

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