High-strength ring gear for engineering machinery

Abstract

The utility model discloses a kind of high-strength engineering machinery gear rings, it is related to gear ring technical field, including outer gear ring component, the outer gear ring component includes outer gear ring main body, the inside of outer gear ring main body is opened with helical tooth slot around, the rear side of outer gear ring main body is integrally formed with backplate, the inside of outer gear ring main body is provided with inner gear ring component, the inner gear ring component includes inner gear ring main body, the inside of outer gear ring main body is set to inner gear ring main body, the front side of inner gear ring main body is provided with bolt through arrangement.The beneficial effects of the utility model are that when the part structure of gear ring is worn, outer gear ring main body can be directly replaced alone, without replacing as a whole, save cost, without gear ring whole dismounting, greatly save the time of gear ring dismounting replacement, simultaneously, inner gear ring main body and outer gear ring main body can be independently installed and used, improve the application range of gear ring.

Description

Technical Field

[0001] This utility model relates to the field of gear ring technology, and in particular to a high-strength gear ring for engineering machinery. Background Technology

[0002] Ring gears are a type of annular gear, widely used in slewing bearings, planetary gear systems, and large transmission devices. Their core functions are to transmit torque, achieve smooth meshing, and withstand radial and axial loads. Currently, ring gears used in construction machinery experience varying degrees of wear after a period of use due to the high pressure and transmitted torque they are subjected to.

[0003] The existing gear rings for engineering machinery have the following problems: The gear ring is a one-piece structure that cannot be disassembled. During use, if part of the gear ring is worn, the whole structure needs to be replaced. This not only increases the cost, but also requires the entire gear ring to be removed and a new gear ring to be installed, which is a very cumbersome operation.

[0004] Gear rings have only one tooth structure and can only mesh with one tooth profile. The range of applications for gears is limited. If the tooth structure of the gear ring needs to be changed, the entire gear ring must be disassembled and replaced, making it unsuitable for different occasions. Utility Model Content

[0005] In view of the problems existing in the current high-strength gear rings for engineering machinery, this utility model is proposed.

[0006] Therefore, the problem to be solved by this utility model is that the gear ring is an integral structure that cannot be disassembled, and the gear ring has only one tooth structure, which can only mesh with one tooth shape.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-strength gear ring for engineering machinery, including an outer gear ring assembly, the outer gear ring assembly including an outer gear ring body, the inner side of the outer gear ring body being provided with a circumferential oblique tooth groove, the rear side of the outer gear ring body being integrally formed with a back plate, the inner gear ring assembly being disposed inside the outer gear ring body, the inner gear ring assembly including an inner gear ring body, the inner gear ring body being disposed inside the outer gear ring body, and a bolt being provided through the front side of the inner gear ring body.

[0008] As a preferred embodiment of the high-strength engineering machinery gear ring of this utility model, the outer ring of the outer gear ring body is provided with straight teeth, the outer ring of the inner gear ring body is provided with oblique teeth, and the inner gear ring body is fitted into the inner cavity of the oblique tooth groove.

[0009] As a preferred embodiment of the high-strength engineering machinery gear ring of this utility model, annular grooves are provided on both the front and rear sides of the back plate, and through holes are provided inside the annular grooves.

[0010] As a preferred embodiment of the high-strength engineering machinery gear ring of this utility model, the inner ring of the back plate is provided with a limiting groove, the rear side of the inner gear ring body is integrally formed with a limiting plate, the limiting plate and the limiting groove are positioned correspondingly, and the limiting plate and the inner cavity of the limiting groove are fitted together.

[0011] As a preferred embodiment of the high-strength engineering machinery gear ring of this utility model, the back plate has threaded holes on its surface, and there are three threaded holes and three limiting plates, which are arranged in an alternating manner.

[0012] As a preferred embodiment of the high-strength gear ring for engineering machinery described in this utility model, a bolt groove is provided on the front side of the main body of the internal gear ring, the position of the bolt groove corresponds to the position of the threaded hole, and the rear side of the bolt passes through the bolt groove and is threadedly connected to the inner wall of the threaded hole.

[0013] The beneficial effects of this utility model are as follows: The gear ring is divided into two parts: an outer gear ring body and an inner gear ring body. An oblique tooth groove is opened inside the outer gear ring body, so that the inner gear ring body can be embedded into the oblique tooth groove and merged. It is fixed with bolts so that it can be used as a whole. When part of the gear ring structure is worn, the outer gear ring body can be replaced directly, reducing maintenance costs by more than 50%. There is no need to replace the whole thing, saving costs. There is also no need to disassemble the entire gear ring, which greatly saves time in disassembling and replacing the gear ring. At the same time, the inner gear ring body and the outer gear ring body can be installed and used independently, which improves the applicability of the gear ring. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a gear ring used in high-strength engineering machinery.

[0016] Figure 2 This is a rear-view three-dimensional structural diagram of a gear ring used in high-strength engineering machinery.

[0017] Figure 3 This is a three-dimensional exploded view of a gear ring for high-strength engineering machinery.

[0018] Figure 4 This is a rear-view three-dimensional schematic diagram of the exploded structure of a gear ring for high-strength engineering machinery.

[0019] In the diagram: 1. External gear ring assembly; 101. External gear ring body; 102. Back plate; 103. Annular groove; 104. Through hole; 105. Threaded hole; 106. Limiting groove; 107. Inclined tooth groove; 2. Internal gear ring assembly; 201. Internal gear ring body; 202. Bolt groove; 203. Bolt; 204. Limiting plate. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Reference Figures 1-4 A high-strength gear ring for engineering machinery includes an outer gear ring assembly 1, which includes an outer gear ring body 101. The outer gear ring body 101 has a circumferentially formed oblique tooth groove 107 inside. A back plate 102 is integrally formed on the rear side of the outer gear ring body 101. An inner gear ring assembly 2 is disposed inside the outer gear ring body 101. The inner gear ring assembly 2 includes an inner gear ring body 201, which is disposed inside the outer gear ring body 101. A bolt 203 is provided through the front side of the inner gear ring body 201.

[0023] It should be noted that the outer ring of the outer gear ring body 101 is provided with straight teeth, and the outer ring of the inner gear ring body 201 is provided with oblique teeth. The inner gear ring body 201 is fitted into the inner cavity of the oblique tooth groove 107.

[0024] Specifically, the straight tooth structure and the helical tooth structure of the outer gear ring body 101 and the inner gear ring body 201 can adapt to two different types of gear transmission connection methods, which greatly improves the applicability of traditional gear rings.

[0025] Furthermore, the material of the outer gear ring body 101 is 42CrMo, and it is processed by forging blank → CNC milling → medium frequency quenching process. The bending strength is ≥1200MPa and the fatigue life is 10^7 cycles. The internal gear ring body 201 is made of 20CrMnTi and undergoes carburizing and quenching process, which improves its wear resistance by 3 times. The back plate 102 is made of Q355B steel plate and is laser-cut and stress-relief annealed, with a flatness of ≤0.1mm / m². Bolt 203 is a 12.9 grade high-strength bolt with a molybdenum disulfide coating.

[0026] It should be noted that annular grooves 103 are provided on both the front and rear sides of the back plate 102, and through holes 104 are provided inside the annular grooves 103.

[0027] Specifically, the annular groove 103 and the through hole 104 are provided for installing the external gear ring body 101 when it is used alone. Simply insert the mounting screw through the through hole 104 to install it in the desired position.

[0028] It should be noted that the inner ring of the back plate 102 has a limiting groove 106, and the rear side of the inner gear ring body 201 is integrally formed with a limiting plate 204. The limiting plate 204 and the limiting groove 106 are positioned correspondingly, and the limiting plate 204 and the inner cavity of the limiting groove 106 are fitted together.

[0029] Specifically, the limiting groove 106 is used to limit the limiting plate 204, so that the inner gear ring body 201 can be quickly aligned with the outer gear ring body 101 for installation, and the inner gear ring body 201 and the outer gear ring body 101 can be interlocked during rotation so that the two do not rotate relative to each other.

[0030] It should be noted that the surface of the back plate 102 is provided with threaded holes 105. There are three threaded holes 105 and three limiting plates 204, which are arranged in an alternating manner.

[0031] Specifically, the threaded hole 105 is used to connect the bolt 203, so that the bolt 203 can fix the inner gear ring body 201 inside the outer gear ring body 101, thereby achieving stable installation.

[0032] It should be noted that a bolt groove 202 is provided on the front side of the internal gear ring body 201. The position of the bolt groove 202 corresponds to the position of the threaded hole 105. The rear side of the bolt 203 passes through the bolt groove 202 and is threadedly connected to the inner wall of the threaded hole 105.

[0033] Specifically, the surface of bolt 203 has a cross groove for rotating with a screwdriver to tighten the bolt 203, making it convenient for the user to rotate the bolt 203.

[0034] Furthermore, to prevent uneven preload or vibration-induced loosening caused by bolt 203 breaking, anti-loosening washers and torque wrenches are added to bolt 203 for calibration.

[0035] In use, the gear ring is divided into two parts: an outer gear ring body 101 and an inner gear ring body 201. A helical tooth groove 107 is formed inside the outer gear ring body 101. The limiting groove 106 and the helical tooth groove 107 are cleaned, and MoS2 grease is applied. The inner gear ring body 201 is placed inside the outer gear ring body 101, and the limiting plate 204 is aligned with the limiting groove 106 so that it can be inserted into the helical tooth groove 107 for merging. The limiting plate 204 and the limiting groove 106 are aligned, and the ring is gently tapped until it is fully fitted. At this time, the bolt 203 is passed through the bolt groove 202 and screwed into the threaded hole 105. Then the bolt 203 is tightened to fix the outer gear ring body 101 and the inner gear ring body 201 together, so that they can be used as a whole. When the structure of the gear ring is worn, the bolt 203 can be unscrewed directly, the outer gear ring body 101 can be removed and replaced separately. At the same time, the inner gear ring body 201 and the outer gear ring body 101 can be installed and used independently.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-strength gear ring for engineering machinery, comprising an external gear ring assembly (1), characterized in that: The external gear ring assembly (1) includes an external gear ring body (101), the interior of which is provided with a circumferentially shaped toothed groove (107), and a back plate (102) integrally formed on the rear side of the external gear ring body (101). An internal gear ring assembly (2) is provided inside the external gear ring body (101), the internal gear ring assembly (2) includes an internal gear ring body (201), the internal gear ring body (201) is disposed inside the external gear ring body (101), and a bolt (203) is provided through the front side of the internal gear ring body (201).

2. The high-strength gear ring for engineering machinery as described in claim 1, characterized in that: The outer ring of the outer gear ring body (101) is provided with straight teeth, and the outer ring of the inner gear ring body (201) is provided with oblique teeth. The inner gear ring body (201) is fitted into the inner cavity of the oblique tooth groove (107).

3. The high-strength gear ring for engineering machinery as described in claim 1, characterized in that: The back plate (102) has annular grooves (103) on both the front and rear sides, and a through hole (104) is provided inside the annular grooves (103).

4. The high-strength gear ring for engineering machinery as described in claim 1, characterized in that: The inner ring of the back plate (102) has a limiting groove (106), and the rear side of the inner gear ring body (201) is integrally formed with a limiting plate (204). The limiting plate (204) and the limiting groove (106) are positioned correspondingly, and the limiting plate (204) and the inner cavity of the limiting groove (106) are fitted together.

5. The high-strength gear ring for engineering machinery as described in claim 4, characterized in that: The back plate (102) has threaded holes (105) on its surface. There are three threaded holes (105) and three limiting plates (204), which are arranged in an alternating pattern.

6. The high-strength gear ring for engineering machinery as described in claim 5, characterized in that: The front side of the internal gear ring body (201) is provided with a bolt groove (202), the position of the bolt groove (202) corresponds to the position of the threaded hole (105), and the rear side of the bolt (203) passes through the bolt groove (202) and is threadedly connected to the inner wall of the threaded hole (105).

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