Gear repair method and gear structure

Abstract

The present invention belongs to the technical field of gear repair, and discloses a gear repair method and a gear structure. The gear repair method includes: S1, the side of the gear body connected to the lock ring is the mating surface, the damaged lock ring on the mating surface is removed, and the mating surface is polished and flattened; S2, threaded holes and positioning grooves are respectively opened on the mating surface along the axial direction of the gear body; S3, a new lock ring is made, and according to the relative position relationship between the threaded hole and the positioning groove, a connecting through hole for the bolt to pass through and a protrusion matching the positioning groove are processed on the new lock ring. The gear structure can realize the rapid disassembly and assembly of the new lock ring and the gear body. When the new lock ring is damaged, it can be disassembled and repaired separately, which saves time, labor and cost; at the same time, the new lock ring is plugged into the positioning groove through the protrusion, which can stably transmit the torque to the gear body and then transmit it to the outside, avoiding the stress concentration caused by the bolt connection, so that the gear structure is reliable and durable.

Description

Technical Field

[0001] The present invention relates to the technical field of gear repair, and in particular to a gear repair method and a gear structure. Background Art

[0002] When the gear is transmitting, it is often locked and fixed with the shaft by a locking ring, in which the locking ring and the gear body are drilled and milled as one, so as to achieve effective transmission between the shaft and the gear body and ensure the stability of the gear body along the axial direction. However, due to reasons such as excessive load on the gear body or fatigue failure of the locking ring, the locking ring may be broken and damaged during use, so that the gear loses its transmission function.

[0003] For the above problems, since the gear body and the locking ring are mostly integrated structures, the locking ring cannot be disassembled and replaced separately. Therefore, manufacturers often reprocess the entire gear structure for replacement, and the undamaged gear body cannot be reused, which will cause waste of parts; at the same time, processing the entire gear structure will increase production costs and be time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to provide a gear repair method and a gear structure, which can dismantle a damaged lock ring and replace it separately, which is convenient and fast and can reduce maintenance costs.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Gear repair methods, including:

[0007] S1. The side of the gear body connected to the lock ring is the mating surface. Remove the damaged lock ring on the mating surface and grind the mating surface flat.

[0008] S2. A threaded hole and a positioning groove are respectively provided on the mating surface along the axial direction of the gear body;

[0009] S3, making a new lock ring, and processing a connecting through hole for the bolt to pass through and a protrusion matching the positioning groove on the new lock ring according to the relative position relationship between the threaded hole and the positioning groove.

[0010] Preferably, the gear repair method further comprises:

[0011] S4. Place the new lock ring against the mating surface, clamp the protrusion in the positioning groove, pass the rod of the bolt through the connecting through hole and threadedly connect it with the threaded hole, and tighten the bolt so that the head of the bolt presses against the new lock ring along the axial direction of the new lock ring.

[0012] Preferably, a plurality of the threaded holes and the connecting through holes are provided, and the plurality of connecting through holes correspond one to one to the plurality of threaded holes.

[0013] Preferably, two threaded holes are provided, and the two threaded holes are symmetrically arranged with respect to the positioning groove.

[0014] Preferably, the positioning groove extends along the radial direction of the gear body.

[0015] Preferably, both end surfaces of the protrusion along the length direction are flush with the inner circumferential surface of the new locking ring and the outer circumferential surface of the new locking ring respectively.

[0016] Preferably, the connecting through hole is a countersunk hole.

[0017] Preferably, the protrusion and the opening of the new locking ring are located on two opposite sides of the axis of the new locking ring.

[0018] Preferably, the new locking ring is made of stainless steel.

[0019] The gear structure is repaired by using the above-mentioned gear repair method.

[0020] The beneficial effects of the present invention are:

[0021] The gear repair method provided by the present invention first removes the damaged locking ring on the gear body and grinds the mating surface of the gear body to be smooth; since a positioning groove is provided axially on the mating surface of the gear body, and a protrusion matching the positioning groove is processed on the newly manufactured new locking ring, the new locking ring is circumferentially fixed to the gear body through the cooperation between the protrusion and the positioning groove, and when the new locking ring rotates with the shaft, the torque can be effectively transmitted to the gear body through the plug-in cooperation between the protrusion and the positioning groove, thereby driving the gear body to rotate; since a threaded hole is also provided axially on the mating surface of the gear body, and a connecting through hole for the passage of a bolt is processed on the newly manufactured new locking ring, a bolt can be used to pass through the connecting through hole and be threadedly connected to the gear body to fasten the gear body and the new locking ring together, thereby realizing a detachable connection between the gear body and the new locking ring, and when the new locking ring is damaged, the new locking ring can be conveniently separated from the gear body and replaced or repaired alone, without the need to reprocess the entire gear structure, thereby saving time and effort and greatly reducing the maintenance cost.

[0022] The gear structure provided by the present invention is repaired using the above-mentioned gear repair method. The gear structure can realize rapid disassembly and assembly of the new locking ring and the gear body. When the new locking ring is damaged, it can be removed separately and repaired or replaced, saving time, labor and cost. At the same time, the new locking ring is plugged into the positioning groove through the protrusion, which can stably transmit the torque to the gear body and then transmit it to the outside, avoiding the stress concentration caused by the bolt connection, so that the gear structure is reliable and durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a first-view structural schematic diagram of a gear body and a new lock ring provided in a specific embodiment of the present invention;

[0024] Figure 2 It is a second perspective structural schematic diagram of the gear body and the new lock ring provided in a specific embodiment of the present invention.

[0025] In the figure:

[0026] 100-shaft hole;

[0027] 200-opening;

[0028] 300-locking screw hole;

[0029] 1-gear body; 11-threaded hole; 12-positioning groove;

[0030] 2-new locking ring; 21-connecting through hole; 22-bump. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] like Figure 1 and Figure 2 As shown, the present invention provides a gear repair method, which includes:

[0036] S1. The side of the gear body 1 connected to the lock ring is the mating surface. Remove the damaged lock ring on the mating surface and grind the mating surface flat. In this embodiment, the lock ring and the gear body 1 are integrally milled. When the lock ring is damaged, the staff uses milling to completely remove the damaged lock ring on the mating surface, thereby retaining the intact gear body 1; then the staff uses a grinding workpiece to grind the mating surface flat to facilitate the subsequent installation of a new lock ring 2.

[0037] S2. A threaded hole 11 and a positioning groove 12 are respectively formed on the mating surface along the axial direction of the gear body 1. In this embodiment, a threaded hole 11 and a positioning groove 12 are respectively formed on the polished mating surface along the axial direction of the gear body 1.

[0038] S3, make a new lock ring 2, and according to the relative position relationship between the threaded hole 11 and the positioning groove 12, process the connecting through hole 21 for the bolt to pass through and the protrusion 22 matching the positioning groove 12 on the new lock ring 2. In this embodiment, to make the new lock ring 2, the staff drills the connecting through hole 21 on the new lock ring 2 along the axial direction of the new lock ring 2, and processes the protrusion 22 on the new lock ring 2; specifically, the relative position of the connecting through hole 21 and the protrusion 22 on the new lock ring 2 is the same as the relative position of the threaded hole 11 and the positioning groove 12 on the matching surface of the gear body 1, and the protrusion 22 can be inserted into the positioning groove 12 in matching with the positioning groove 12, and the connecting through hole 21 is used for the bolt to pass through, thereby realizing the detachable connection and circumferential fixation of the new lock ring 2 and the gear body 1. It can be understood that the gear body 1 and the new lock ring 2 are both annular structures, and both have an axial hole 100 at the center position for the transmission shaft to pass through; when in use, the assembled gear body 1 and the new lock ring 2 are installed on the transmission shaft through the axial hole 100, and the rotation of the transmission shaft will drive the gear body 1 to rotate through the new lock ring 2, thereby effectively outputting torque.

[0039] In the above gear repair method, the damaged lock ring on the gear body 1 is first removed, and the mating surface of the gear body 1 is polished and smoothed; since a positioning groove 12 is provided on the mating surface of the gear body 1 in the axial direction, and a convex block 22 matching the positioning groove 12 is processed on the newly manufactured new lock ring 2, the new lock ring 2 is circumferentially fixed to the gear body 1 through the cooperation between the convex block 22 and the positioning groove 12. When the new lock ring 2 rotates with the shaft, the torque can be effectively transmitted to the gear body 1 through the plug-in cooperation between the convex block 22 and the positioning groove 12, thereby driving the gear body 1 to rotate; since the gear A threaded hole 11 is also provided on the mating surface of the wheel body 1 along the axial direction, and a connecting through hole 21 for the passage of bolts is processed on the newly manufactured new locking ring 2. Therefore, bolts can be used to pass through the connecting through hole 21 and be threadedly connected to the gear body 1 to fasten the gear body 1 and the new locking ring 2 together along the axial direction, thereby realizing a detachable connection between the gear body 1 and the new locking ring 2. When the new locking ring 2 is damaged, the new locking ring 2 can be easily separated from the gear body 1 and replaced or repaired alone without reprocessing the entire gear structure, which saves time and effort and greatly reduces maintenance costs.

[0040] Furthermore, the gear repair method further includes: S4, placing the new lock ring 2 against the mating surface, clamping the protrusion 22 in the positioning groove 12, passing the rod of the bolt through the connecting through hole 21 and threading it with the threaded hole 11, and tightening the bolt so that the head of the bolt presses against the new lock ring 2 along the axial direction of the new lock ring 2. In this embodiment, after the gear body 1 and the new lock ring 2 are both processed, the staff places the new lock ring 2 on the gear body 1 along the axial direction, and adjusts the position of the new lock ring 2 so that the protrusion 22 is clamped in the positioning groove 12, so that the new lock ring 2 and the mating surface of the gear body 1 are in contact; since the relative positions of the connecting through hole 21 and the protrusion 22 are the same as the relative positions of the threaded hole 11 and the positioning groove 12 on the mating surface, the connecting through hole 21 is aligned with the threaded hole 11; then the staff uses a bolt to pass through the connecting through hole 21 and threading it with the threaded hole 11, and tightens the bolt so that the head of the bolt presses against the new lock ring 2, thereby achieving the connection and fixation of the new lock ring 2 with the gear body 1.

[0041] Furthermore, multiple threaded holes 11 and connecting through holes 21 are provided, and the multiple connecting through holes 21 correspond one-to-one to the multiple threaded holes 11. In this embodiment, multiple threaded holes 11 are drilled on the gear body 1, and multiple connecting through holes 21 are drilled on the new lock ring 2 corresponding one-to-one to the multiple threaded holes 11. The new lock ring 2 is connected to the gear body 1 by multiple bolts, thereby improving the connection strength and connection stability of the two.

[0042] Specifically, Figure 1 As shown, there are two threaded holes 11, and the two threaded holes 11 are symmetrically arranged about the positioning groove 12. In this embodiment, the gear body 1 is fixed to the new lock ring 2 in the circumferential direction by the plug-in cooperation between the positioning groove 12 and the protrusion 22, that is, the new lock ring 2 drives the gear body 1 to rotate by the circumferential pressure between the positioning groove 12 and the protrusion 22; two threaded holes 11 are drilled symmetrically about the length direction of the positioning groove 12, which improves the connection strength and connection stability between the new lock ring 2 and the gear body 1, and can effectively balance the axial connection strength between the new lock ring 2 and the gear body 1, avoiding stress concentration and uneven force when the protrusion 22 and the positioning groove 12 are pressed in the circumferential direction.

[0043] Furthermore, if Figure 1 As shown, the positioning groove 12 extends radially along the gear body 1. In this embodiment, the positioning groove 12 and the protrusion 22 both extend radially along the gear body 1, avoiding the positioning groove 12 from extending obliquely to form a radial force component, so that the torque of the new lock ring 2 can be fully and effectively transmitted to the gear body 1.

[0044] Specifically, Figure 2As shown, the two end surfaces of the protrusion 22 along the length direction are respectively flush with the inner circumference of the new lock ring 2 and the outer circumference of the new lock ring 2. In this embodiment, the protrusion 22 extends along the radial direction of the new lock ring 2 and the length of the protrusion 22 is the ring width of the new lock ring 2, thereby increasing the contact area between the protrusion 22 and the positioning groove 12, avoiding stress concentration when the new lock ring 2 transmits torque to the gear body 1, thereby preventing the new lock ring 2 from being damaged.

[0045] Furthermore, if Figure 1 As shown, the connecting through hole 21 is a countersunk hole. In this embodiment, the bolt passes through the connecting through hole 21 and is connected to the gear body 1. The head of the bolt is located in the countersunk hole and axially abuts against the new lock ring 2. The design of the countersunk hole can prevent the head of the bolt from being exposed, making the appearance of the entire gear structure beautiful and smooth, and reducing the wear of the bolt, thereby extending the service life of the gear structure. In addition, the threaded hole 11 is a blind hole to prevent the bolt from being too long and affecting the overall installation of the gear structure.

[0046] Furthermore, if Figure 2 As shown, the protrusion 22 and the opening 200 of the new lock ring 2 are located on two sides opposite to the axis of the new lock ring 2. In this embodiment, the new lock ring 2 is a C-shaped ring structure, with a through opening 200 in the radial direction, and locking screw holes 300 are drilled in the horizontal direction on the ring body on both sides of the opening 200. After the staff puts the assembled gear body 1 and the new lock ring 2 on the transmission shaft, the locking screws are used to pass through the locking screw holes 300 on the ring body on both sides of the opening 200 in sequence and tightened, so as to firmly lock the new lock ring 2 on the transmission shaft; specifically, the protrusion 22 and the opening 200 of the new lock ring 2 are located on two sides opposite to the axis, that is, the two are symmetrical about the axis of the new lock ring 2, so when the staff uses the locking screws to lock the ring body on both sides of the opening 200, the locking force of the locking screws on the ring body on both sides is the same, thereby avoiding fatigue failure caused by excessive force on one side of the ring body for a long time, thereby extending the service life of the new lock ring 2.

[0047] Furthermore, the new lock ring 2 is made of stainless steel. In this embodiment, the new lock ring 2 is made of 304 stainless steel commonly used in the art, which has strong corrosion resistance, high strength and high temperature resistance, so that the new lock ring 2 has good durability; the gear body 1 is made of 6063 aluminum alloy commonly used in the art, which has excellent processing performance and thermoplasticity, thereby reducing the processing difficulty of the gear body 1.

[0048] like Figure 1 and Figure 2The present invention also provides a gear structure that is repaired using the above-mentioned gear repair method. The gear structure can realize the rapid disassembly and assembly of the new lock ring 2 and the gear body 1. When the new lock ring 2 is damaged, it can be disassembled separately and repaired or replaced, which saves time, labor and cost. At the same time, the new lock ring 2 is plugged into the positioning groove 12 through the protrusion 22 to achieve the circumferential fixation of the new lock ring 2 and the gear body 1, and can stably transmit the torque to the gear body 1 and then transmit it to the outside, avoiding the stress concentration caused by the bolt connection, so that the gear structure is reliable and durable.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gear repair method, characterized in that: include: S1. The side of the gear body (1) connected to the lock ring is the mating surface. The damaged lock ring formed by milling and turning the gear body (1) on the mating surface is removed, and the mating surface is polished and smoothed. S2. A threaded hole (11) and a positioning groove (12) are respectively provided on the mating surface along the axial direction of the gear body (1), wherein the positioning groove (12) extends along the radial direction of the gear body (1); S3, making a new lock ring (2), and processing a connecting through hole (21) for the bolt to pass through and a protrusion (22) matching the positioning groove (12) on the new lock ring (2) according to the relative positional relationship between the threaded hole (11) and the positioning groove (12), the plug-in fit between the positioning groove (12) and the protrusion (22) transmits the torque to the gear body (1), and in the repaired gear, the new lock ring (2) is detachably connected to the gear body (1), and the two end surfaces of the protrusion (22) along the length direction are respectively flush with the inner circumference of the new lock ring (2) and the outer circumference of the new lock ring (2); S4. Place the new lock ring (2) against the mating surface, clamp the protrusion (22) in the positioning groove (12), pass the rod of the bolt through the connecting through hole (21) and threadedly connect it to the threaded hole (11), and tighten the bolt so that the head of the bolt presses against the new lock ring (2) along the axial direction of the new lock ring (2).

2. The gear repair method according to claim 1, characterized in that: A plurality of the threaded holes (11) and the connecting through holes (21) are provided, and the plurality of connecting through holes (21) correspond one-to-one to the plurality of threaded holes (11).

3. The gear repair method according to claim 2, characterized in that: Two threaded holes (11) are provided, and the two threaded holes (11) are symmetrically arranged with respect to the positioning groove (12).

4. The gear repair method according to claim 1, characterized in that: The connecting through hole (21) is a countersunk hole.

5. The gear repair method according to claim 1, characterized in that: The protrusion (22) and the opening (200) of the new locking ring (2) are located on two opposite sides of the axis of the new locking ring (2).

6. The gear repair method according to any one of claims 1 to 5, characterized in that: The new locking ring (2) is made of stainless steel.

7. Gear structure, characterized in that, The gear is repaired by the gear repair method described in any one of claims 1 to 6.

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