CN212455411U

CN212455411U - Gear wheel

Info

Publication number: CN212455411U
Application number: CN202021204375.7U
Authority: CN
Inventors: 胡圣登; 刘利军; 谭海波
Original assignee: Sany Petroleum Intelligent Equipment Co Ltd
Current assignee: Sany Petroleum Intelligent Equipment Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-02
Anticipated expiration: 2030-06-24

Abstract

The utility model belongs to the technical field of the gear technique and specifically relates to a gear is related to. The utility model provides a gear, it includes: the gear ring, the spoke structure and the power transmission structure; the peripheral surface of the gear ring is provided with teeth, and the gear ring is annular; spoke structure and power transmission structure all are located the intra-annular of ring gear, and the power transmission structure is connected with the ring gear through spoke structure, and wherein, power transmission structure and spoke structure fixed connection, spoke structure can dismantle fixed connection with the ring gear. By separating the toothed portion of the gear, i.e., the ring gear from the spoke structure and the power transmission structure, the blank of the toothed ring gear can be manufactured by ring forging, so that the consistency of the forging is improved to a certain extent.

Description

Gear wheel

Technical Field

The utility model belongs to the technical field of the gear technique and specifically relates to a gear is related to.

Background

Gears are mechanical elements that continuously mesh to transmit motion and power, and are toothed mechanical parts that can mesh with each other. At present, a large gear (with the diameter larger than 1m) is integrally forged when a gear blank is manufactured, the blank is manufactured by a method of cutting and reducing materials, and in order to reduce the weight of the whole gear, a lightening hole is generally symmetrically designed in the center of a spoke.

The blank of the large gear is generally difficult to stamp by selecting proper forging equipment, free forging is usually selected, the free forging is performed by means of some simple processes such as hammering, upsetting, drawing and the like, the working labor intensity is high, and the consistency of the blank product of the forged piece is not high. Therefore, the problem of poor consistency of forgings often occurs to large gears with large blank volumes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear to solve the great large gear of blank volume that exists among the prior art, often can appear the relatively poor technical problem of forging uniformity.

The utility model provides a gear, it includes: the gear ring, the spoke structure and the power transmission structure; the peripheral surface of the gear ring is provided with teeth, and the gear ring is annular; the spoke structure with the power transmission structure all is located the intra-annular of ring gear, just the power transmission structure passes through the spoke structure with the ring gear is connected, wherein, the power transmission structure with spoke structure fixed connection, the spoke structure with fixed connection can be dismantled to the ring gear.

In any of the above technical solutions, further, the spoke structure includes an annular ring and a plurality of spokes; one end of the spoke is connected with the annular ring, and the other end of the spoke is connected with the power transmission structure.

In any of the above technical solutions, further, the inner surface of the ring gear has a mounting boss extending in the radial direction of the ring gear, and the mounting boss is detachably and fixedly connected to the annular ring through a fastener.

In any of the above technical solutions, further, the fastener is a bolt or a screw.

In any one of the above technical solutions, further, the mounting boss is annular, and the mounting boss has at least one step for radially positioning the annular ring.

In any of the above technical solutions, further, the power transmission structure is a columnar structure, and an annular boss is provided on an outer circumferential surface of the columnar structure;

the spokes and the annular boss are welded or detachably and fixedly connected.

In any of the above technical solutions, further, the power transmission structure has a shaft hole;

the shaft hole is provided with an internal spline or a key groove; or/and the power transfer structure has a mounting flange.

In any of the above technical solutions, further, the spokes are made of rectangular steel or tubing.

In any of the above technical solutions, further, a positioning structure is disposed between the mounting boss and the annular ring, and is used for positioning the assembly between the mounting boss and the annular ring.

In any of the above technical solutions, further, the positioning structure includes a positioning pin and positioning holes disposed on the mounting boss and the annular ring; the positioning holes of the mounting boss and the positioning holes of the annular ring are inserted through the positioning pins.

Compared with the prior art, the beneficial effects of the utility model mainly lie in:

the utility model provides a gear, it includes: the gear ring, the spoke structure and the power transmission structure; the peripheral surface of the gear ring is provided with teeth, and the gear ring is annular; spoke structure and power transmission structure all are located the intra-annular of ring gear, and the power transmission structure is connected with the ring gear through spoke structure, and wherein, power transmission structure and spoke structure fixed connection, spoke structure can dismantle fixed connection with the ring gear. By separating the toothed portion of the gear, i.e., the ring gear from the spoke structure and the power transmission structure, the blank of the toothed ring gear can be manufactured by ring forging, so that the consistency of the forging is improved to a certain extent.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an assembly view of a gear according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an exploded view of a gear according to a first embodiment of the present invention;

fig. 4 is a cross-sectional view of a ring gear according to a first embodiment of the present invention;

fig. 5 is a schematic view of a spoke structure and a power transmission structure after being assembled according to an embodiment of the present invention.

Icon:

101-a gear ring; 102-a spoke structure; 103-power transfer structure; 104-tooth; 105-an annular ring; 106-spokes; 107-mounting a boss; 108-a bolt; 109-mounting holes; 110-a first-level step surface; 111-an annular boss; 112-shaft hole; 113-internal splines; 114-a locating hole; 115-locating pins; 116-a nut; 117-washer.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 5, the present invention provides a gear, including: a ring gear 101, a spoke structure 102, and a power transmission structure 103; the outer peripheral surface of the ring gear 101 has teeth 104, and the ring gear 101 is annular; spoke structure 102 and power transmission structure 103 are all located the intra-annular of ring gear 101, and power transmission structure 103 is connected with ring gear 101 through spoke structure 102, and wherein, power transmission structure 103 and spoke structure 102 fixed connection, spoke structure 102 can dismantle fixed connection with ring gear 101. The peripheral surface of the ring gear 101 is provided with a plurality of teeth uniformly arranged along the circumferential direction thereof so as to be engaged with teeth of other mechanical structures, thereby realizing power transmission of the gear. The power transmission structure 103 is used for being connected with other mechanical structures to realize power transmission of the gear. The ring gear 101 is disposed coaxially with the power transmission structure 103.

The embodiment of the utility model provides a gear, part (being ring gear 101) and spoke structure 102 and power transmission structure through having the tooth with the gear part parts to make the blank of ring gear 101 that has the tooth can adopt the ring to forge and make, with the uniformity that improves the forging to a certain extent, blank manufacturing process and cost are more conventional forging integral type gear blank simple process, cost-economy in addition. The gear adopts the structure of pin-connected panel, when each part breaks down, can adopt local change to continue to use like this, avoids local destruction back whole to scrap.

In an alternative version of this embodiment, the spoke structure 102 includes an annular ring 105 and a plurality of spokes 106; one end of the spokes 106 is connected to the annular ring 105, and the other end of the spokes 106 is connected to the power transmission structure 103. By employing a plurality of spokes 106, the weight of the gear is advantageously reduced.

Specifically, the plurality of spokes 106 are uniformly spaced along the inner ring of the annular ring 105, and the central angles formed between two adjacent spokes 106 are all equal, so that lightening holes are formed between two adjacent spokes 106, thereby being beneficial to lightening the weight of the gear. One end of the spoke 106 is fixedly connected to the annular ring 105 by welding or fasteners, such as bolts 108 or screws.

In an alternative of this embodiment, the inner surface of the ring gear 101 has a mounting boss 107 extending in the radial direction of the ring gear 101, and the mounting boss 107 is detachably and fixedly connected with the annular ring 105 through a fastener. Therefore, the gear ring 101 and the spoke structure 102 can be detachably connected, and when the gear ring 101 or the spoke structure 102 needs to be replaced, maintenance and replacement are facilitated.

Specifically, the mounting boss 107 extends in the direction of the center of the ring gear 101. The mounting boss 107 is detachably and fixedly connected with the annular ring 105 through a fastener, and the adopted fastener can be a bolt 108 or a screw, so that later maintenance is facilitated.

In an alternative scheme of this embodiment, the mounting boss 107 and the annular ring 105 each have a plurality of mounting holes 109 for bolts 108 or screws to pass through, and the plurality of mounting holes 109 on the mounting boss 107 and the plurality of mounting holes 109 on the annular ring 105 are equal in number and correspond to each other one by one, so that fasteners can be inserted into the mounting holes 109, that is, after the mounting holes 109 on the mounting boss 107 and the mounting holes 109 on the annular ring 105 correspond to each other one by one, the fasteners can be inserted into the mounting holes 109. The bolt 108 is threadedly coupled to a nut 116, which may have a washer 117 mounted thereon.

The mounting holes 109 may be provided as unthreaded holes or internally threaded as desired.

In an alternative to this embodiment, the mounting boss 107 is annular, and the mounting boss 107 has at least one step for radially positioning the annular ring 105. This avoids wobbling of the annular ring 105 in the radial direction.

Specifically, the mounting boss 107 has a primary step having a primary step face 110, and the annular ring 105 is in contact with the primary step face 110 when mounted; after the first step is arranged, a recess is formed on the mounting boss 107, and the annular ring 105 is limited in the recess, so that the radial positioning of the annular ring is realized.

In an alternative scheme of this embodiment, the power transmission structure 103 is a columnar structure, and an annular boss 111 is arranged on the outer peripheral surface of the columnar structure; the spokes 106 and the annular boss 111 are welded or detachably and fixedly connected. This arrangement facilitates mounting between the spokes 106 and the power transmission structure 103. After the spoke structure 102 and the power transmission structure 103 are fixedly connected by welding, the spoke structure 102 and the power transmission structure 103 form an intermediate structure.

Specifically, when the spokes 106 and the annular boss 111 are detachably connected, the detachable connection can be realized by using bolts 108 or screws. The annular ring 105 is arranged coaxially with the cylindrical structure.

In an alternative to this embodiment, the power transmission structure 103 has a shaft hole 112; the shaft bore 112 has internal splines 113 or keyways. This enables the power transmission structure 103 to be connected to other shaft structures.

Specifically, the shaft hole 112 is provided coaxially with the ring gear 101.

It should be noted that, in this embodiment, the power transmission structure 103 is not limited to the connection with other shaft structures by the internal spline 113 or the key groove; a mounting flange can also be arranged on the power transmission structure 103 or an external spline can be arranged on the outer surface of the power transmission structure 103 to realize transmission with other shaft structures or mechanical components.

In the alternative scheme of this embodiment, the spokes 106 are made of rectangular steel or a pipe material, and the rectangular steel or the pipe material is favorable for ensuring the force transmission between the power transmission structure 103 and the ring gear 101 on the basis of reducing the cost, so that the possibility of bending of the spokes 106 caused by torque is reduced.

It should be noted that the spokes 106 are not limited to two types, namely, rectangular steel or tubular steel, and other types of spokes 106 can be freely selected according to actual working conditions to realize the connection function; for the other types of spokes 106, detailed description is omitted.

In an alternative of this embodiment, a positioning structure is provided between the mounting boss 107 and the annular ring 105, and is used for positioning the assembly between the mounting boss 107 and the annular ring 105.

Specifically, the positioning structure includes a positioning pin 115 and a positioning hole 114 provided on the mounting boss 107 and the annular ring 105; the positioning holes 114 of the mounting bosses 107 and the positioning holes 114 of the annular ring 105 are inserted through positioning pins 115. The positioning pin 115 is in interference fit or threaded connection with the positioning hole 114.

In use, the positioning pin 115 is inserted into the positioning hole 114, so that the mounting holes 109 of the mounting bosses 107 and the mounting holes 109 of the annular ring 105 correspond to each other.

It should be noted that the positioning structure is equivalent to a suspension preventing structure, that is, the suspension preventing structure may be configured as required, for example, a positioning boss or a positioning groove is provided on the outer circumferential surface of the annular ring 105, and a corresponding positioning groove matched with the positioning boss of the annular ring 105 is provided on the inner circumferential surface of the ring gear 101, or a positioning boss corresponding to the positioning groove of the annular ring 105 is provided, so that the mounting holes 109 on the mounting bosses 107 and the mounting holes 109 on the annular ring 105 can be in one-to-one correspondence, which facilitates the mounting of the fasteners.

To sum up, the embodiment of the utility model provides a can set up the form of assembling of components of a whole that can function independently with the gear, be ring gear 101, intermediate structure two parts with the gear split. After the whole gear is completely installed, the internal structure of the shaft hole 112 and the teeth of the gear can be finished. When the spoke structure 102 and the power transmission structure 103 adopt a welding mode, the total weight is lighter and lighter compared with that of a traditional integrated middle lightening hole gear, a gear ring 101 blank with external teeth can be manufactured by ring forging, and the blank manufacturing process and cost are simpler than those of a conventional integrated gear blank forging process and are economical; in addition, when each part of the assembled structure breaks down, the assembled structure can be continuously used by adopting local replacement, and the integral scrapping after local damage is avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.

Claims

1. A gear, comprising: a ring gear (101), a spoke structure (102) and a power transmission structure (103); the outer peripheral surface of the gear ring (101) is provided with teeth (104), and the gear ring (101) is annular; the spoke structure (102) and the power transmission structure (103) are both located in a ring of the gear ring (101), the power transmission structure (103) is connected with the gear ring (101) through the spoke structure (102), the power transmission structure (103) is fixedly connected with the spoke structure (102), and the spoke structure (102) is detachably and fixedly connected with the gear ring (101).

2. Gear wheel according to claim 1, characterized in that the spoke structure (102) comprises an annular ring (105) and a plurality of spokes (106); one end of the spoke (106) is connected with the annular ring (105), and the other end of the spoke (106) is connected with the power transmission structure (103).

3. The gear according to claim 2, characterized in that the inner surface of the ring gear (101) has a mounting boss (107) extending in the radial direction of the ring gear (101), the mounting boss (107) being detachably and fixedly connected to the annular ring (105) by means of a fastener.

4. A gear according to claim 3, characterized in that the fastener is a bolt (108) or a screw.

5. Gear wheel according to claim 3, characterised in that the mounting boss (107) is annular and that the mounting boss (107) has at least one step for radial positioning of the annular ring (105).

6. The gear according to any one of claims 2-5, wherein the power transmission structure (103) is a cylindrical structure having an annular boss (111) on its outer circumferential surface;

the spokes (106) are fixedly connected with the annular boss (111) in a welding or detachable mode.

7. Gear wheel according to any of claims 1-5 characterized in that said power transmission structure (103) has a shaft hole (112);

the shaft hole (112) is provided with an internal spline (113) or a key groove; or/and the power transmission structure (103) has a mounting flange.

8. A gear wheel according to any of claims 2-5, characterized in that the spokes (106) are made of rectangular steel or tubing.

9. A gear wheel according to any of claims 3-5, characterized in that positioning structures are provided between the mounting boss (107) and the annular ring (105) for positioning the fit between the mounting boss (107) and the annular ring (105).

10. The gear of claim 9, wherein the positioning structure comprises a positioning pin (115) and a positioning hole (114) provided on the mounting boss (107) and the annular ring (105); the positioning hole (114) of the mounting boss (107) and the positioning hole (114) of the annular ring (105) are inserted through the positioning pin (115).