Wear-resistant powder metallurgy gear ring

Abstract

The utility model discloses a wear-resistant powder metallurgy gear ring, which belongs to the technical field of gear ring transmission and comprises at least two fan-shaped rings, a plurality of sawteeth and a limiting mechanism. One end of each fan-shaped ring is provided with a dovetail groove, and the other end of each fan-shaped ring is provided with a dovetail protruding block connected with the corresponding dovetail groove in a clamped mode. The fan-shaped rings are detachably connected through the head ends and the tail ends to form a whole circular ring; all the sawteeth are arranged on the arc-shaped side wall of the fan-shaped ring; the limiting mechanisms are arranged on the two sides of the fan-shaped ring and used for preventing the fan-shaped ring from axially deviating.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gear ring drive technical field especially relates to a wear -resisting powder metallurgy gear ring. BACKGROUND

[0002] Gear ring is the key component in gear drive system, is widely used in the field such as automobile, engineering machinery, aerospace, its main function is to transmit power and change speed, and the wear resistance and reliability of gear ring directly influence the service life and performance of drive system;In practical application, some parts (such as addendum, dedendum, tooth surface etc.) of gear ring are easy to wear due to long-term operation;In order to improve the service life and maintenance convenience of gear ring in the prior art, the gear ring that can be disassembled is designed to allow the part that is worn more to be replaced individually, and the entire gear ring does not need to be replaced, for example, the patent with publication number CN209725149U discloses a combined gear ring structure, which realizes detachable function through dovetail groove, and is convenient for maintenance and replacement of gear ring;

[0003] However, the patent document only relies on dovetail groove for positioning, and does not design axial limiting structure, which leads to the possibility of axial deviation of gear ring during operation, affecting the stability and reliability of drive system, and even possibly causing interference between gear ring and adjacent components, causing equipment failure;

[0004] In view of the deficiencies of the prior art, the utility model provides a wear -resisting powder metallurgy gear ring, to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art, and provides a wear -resisting powder metallurgy gear ring, which can prevent the separated partial gear ring from axial deviation during operation.

[0006] To achieve the above object, the utility model is adopted with the following technical scheme:

[0007] A wear -resisting powder metallurgy gear ring, comprising:

[0008] At least two sector rings, one end of each sector ring is provided with a dovetail groove, and the other end is provided with a dovetail protruding block connected with the dovetail groove;Each sector ring is formed into a whole circular ring through detachable connection of the first end and the second end;

[0009] A plurality of sawteeth, each sawtooth is arranged on the arc-shaped side wall of the sector ring;

[0010] And a limiting mechanism is arranged on both sides of the sector ring to prevent axial deviation of the sector ring.

[0011] Preferably, the limiting mechanism comprises a pair of limiting components, and the limiting components are arranged on both sides of the sector ring respectively.

[0012] The limiting assembly comprises:

[0013] Two rotating seats are arranged at intervals and are arranged on one side of the sector ring, and rotating holes are formed in the rotating seats;

[0014] A rotating rod is rotatably connected to the rotating holes of the two rotating seats;

[0015] A limiting plate is connected to one end of the rotating rod and is detachably connected to the adjacent sector ring through a fastener.

[0016] Preferably, at least one threaded hole is formed in the end of the limiting plate away from the rotating seat, threaded grooves are formed in the two sides of each sector ring, the threaded grooves correspond to the threaded holes in position, and the threaded directions are consistent.

[0017] Preferably, the fastener comprises a screw, and a threaded section of the screw is threadedly connected to the threaded hole and the threaded groove in sequence.

[0018] Preferably, the limiting mechanism further comprises an abutting plate, the abutting plate is arranged on the side of the limiting plate close to the sector ring, one side of the abutting plate abuts against the sector ring, at least one round hole is formed in the abutting plate, the round hole corresponds to the threaded hole in position, and the diameter of the round hole is greater than that of the threaded hole.

[0019] Preferably, each sawtooth is made of wear-resistant powder metallurgy.

[0020] Preferably, the number of the limiting assemblies is the same as that of the sector rings.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] 1. The limiting mechanism is arranged on the two sides of the sector ring, comprises a pair of limiting assemblies, the limiting plate in the limiting assembly is connected to the adjacent two sector rings through the fastener after being rotated, and the axial deviation of the sector ring is effectively prevented on the basis of the detachable tooth ring in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the utility model.

[0024] Figure 2 is a local enlarged view A of the utility model.

[0025] Figure 3 is a disconnected view of the utility model.

[0026] Figure 4 is a local enlarged view B of the utility model.

[0027] wherein:

[0028] 1, fan ring; 11, dovetail groove; 12, dovetail convex block; 13, threaded groove; 2, sawtooth; 3, limiting mechanism; 31, rotating seat; 311, rotating hole; 32, rotating rod; 33, limiting plate; 331, threaded hole; 34, abutting plate; 341, round hole; 35, screw. DETAILED DESCRIPTION

[0029] The utility model will be described further, combining with the drawings. The following examples are only for more clearly explaining the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0030] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0031] In the description of the utility model, it is understood that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Reference Figures 1-4 The embodiment provides a wear-resistant powder metallurgy gear ring, comprising:

[0033] At least two fan rings 1, one end of each of the fan rings 1 is provided with a dovetail groove 11, and the other end is provided with a dovetail convex block 12 connected with the dovetail groove 11; each of the fan rings 1 is formed into a whole circular ring through detachable connection of the first end and the second end;

[0034] A plurality of sawteeth 2 are arranged on the arc-shaped side wall of the fan ring 1.

[0035] And a limiting mechanism 3 is arranged on both sides of the fan ring 1, and is used for preventing the fan ring 1 from being axially deviated.

[0036] Specifically, in the embodiment, the limiting mechanism 3 comprises a pair of limiting assemblies, and the limiting assemblies are arranged on two sides of the fan-shaped ring 1 respectively.

[0037] The limiting assembly comprises:

[0038] Two rotating seats 31 which are arranged at intervals and are arranged on one side of the fan-shaped ring 1, and rotating holes 311 are formed in the rotating seats 31;

[0039] A rotating rod 32 which is rotatably connected to the rotating holes 311 of the two rotating seats 31;

[0040] A limiting plate 33 which is connected to the rotating rod 32 at one end and is detachably connected to the adjacent fan-shaped ring 1 through a fastener at the other end.

[0041] Further, at least one threaded hole 331 is formed in the end of the limiting plate 33 which is away from the rotating seat 31, threaded grooves 13 are formed on the two sides of each fan-shaped ring 1, and the threaded grooves 13 correspond to the positions of the threaded holes 331.

[0042] It should be noted that, in the embodiment, the fastener comprises a screw 35, and the threaded section of the screw 35 is threadedly connected to the threaded hole 331 and the threaded groove 13 in sequence.

[0043] In order to increase the stability of the limiting mechanism 3, in the embodiment, the limiting mechanism 3 further comprises an abutting plate 34 which is arranged on the side of the limiting plate 33 which is close to the fan-shaped ring 1, one side of the abutting plate 34 abuts against the fan-shaped ring 1, at least one circular hole 341 is formed in the abutting plate 34, the circular hole 341 corresponds to the position of the threaded hole 331, and the diameter of the circular hole 341 is greater than the diameter of the threaded hole 331.

[0044] In order to improve the wear resistance of the gear ring, in the embodiment, each sawtooth 2 is made of wear-resistant powder metallurgy.

[0045] It should be noted that, in the embodiment, the number of the limiting assemblies is the same as that of the fan-shaped rings 1, and each limiting assembly is four.

[0046] In the embodiment, the limiting mechanism 3 is designed, the limiting mechanism 3 is arranged on the two sides of the fan-shaped ring 1, comprises a pair of limiting assemblies, the limiting plate 33 in the limiting assembly is connected to the adjacent two fan-shaped rings 1 through the fastener after being rotated, and on the basis of the detachable gear ring in the prior art, the axial deviation of the fan-shaped ring 1 is effectively prevented.

[0047] Working principle: preferably, when replacing part of the gear ring, first remove the corresponding screw 35 through the tool, then rotate the limiting plate 33, remove the sector ring 1 that needs to be replaced, clamp the new sector ring 1 after removal, then rotate the limiting plate 33 back, and install the screw 35 back.

[0048] In summary, the detachable sector ring 1 structure and the axial limiting mechanism 3 solve the problem of axial deviation of the existing gear ring, reduce the maintenance cost, enhance the stability and reliability of the transmission system, and have wide applicability.

[0049] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should be considered as the protection range of the present application.

Claims

1. A wear resistant powder metallurgy gear ring, characterized in that, The utility model relates to a kind of sawtoothed wheel, including: At least two fan rings (1), one end of each of the fan ring (1) is provided with dovetail groove (11), and the other end is provided with dovetail convex block (12) connected with dovetail groove (11);Each of the fan ring (1) is formed into a whole circular ring by detachable connection of head and tail end; A plurality of sawteeth (2), each of the sawteeth (2) is arranged on the arc-shaped side wall of the fan ring (1); And limiting mechanism (3), the limiting mechanism (3) is arranged on both sides of the fan ring (1), for preventing fan ring (1) axial deviation.

2. The wear-resistant powder metallurgy gear ring of claim 1, wherein, The limiting mechanism (3) includes a pair of limiting components, and the limiting components are respectively arranged on both sides of the fan ring (1); The limiting component includes: Two rotation seats (31) are arranged at intervals, and the rotation seats (31) are arranged on one side of the fan ring (1), and the rotation holes (311) are formed in the rotation seats (31); Rotating rod (32), both ends of the rotating rod (32) are rotatably connected in the rotation holes (311) of the two rotation seats (31); Limiting plate (33), one end of the limiting plate (33) is connected with the rotating rod (32), and the other end is detachably connected with the adjacent fan ring (1) by fastener.

3. The wear-resistant powder metallurgy gear ring of claim 2, wherein, The end of the limiting plate (33) away from the rotation seat (31) is provided with at least one threaded hole (331), and the threaded grooves (13) are formed in both sides of each of the fan rings (1), and the positions of the threaded grooves (13) correspond to the threaded holes (331), and the threaded directions are consistent.

4. The wear-resistant powder metallurgy gear ring of claim 3, wherein, The fastener includes screw (35), and the threaded section of the screw (35) is sequentially threadedly connected in the threaded hole (331) and the threaded groove (13).

5. The wear resistant powder metallurgy gear ring of claim 3, wherein, The limiting mechanism (3) further includes abutting plate (34), the abutting plate (34) is arranged on the side of the limiting plate (33) close to the fan ring (1), and one side of the abutting plate (34) abuts against the fan ring (1);And the abutting plate (34) is provided with at least one circular hole (341), the circular hole (341) corresponds to the position of the threaded hole (331), and the diameter of the circular hole (341) is greater than the diameter of the threaded hole (331).

6. The wear resistant powder metallurgy gear ring of claim 1, wherein, Each of the sawteeth (2) is made of wear-resistant powder metallurgy.

7. The wear resistant powder metallurgy gear ring of claim 2, wherein, The number of the limiting component and the fan ring (1) is same.

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