阅读说明：本技术 减速机及使用该减速机的卷扬设备 (Speed reducer and hoisting equipment using same ) 是由 浦秋林 肖军宝 贾广利 于 2020-06-30 设计创作，主要内容包括：本发明涉及减速机技术领域,尤其是涉及一种减速机及使用该减速机的卷扬设备。减速机包括至少一个行星轮系,所述行星轮系包括太阳轮、多个行星轮和行星架；每个所述行星轮系中,所述太阳轮与所述行星轮相啮合,所述行星轮安装于所述行星架上；各所述行星轮系由初级输入至末级输出的方向依次传动连接；位于末级的所述行星轮系的行星架包括主体及与所述主体相连接的多个悬臂行星轴,多个所述悬臂行星轴的开放端之间通过挡板相连接。卷扬设备,其包括如所述的减速机。本发明有利于降低悬臂行星轴受力后产生变形的可能性,从而避免安装在其上的行星轮和行星轴承过早失效。(The invention relates to the technical field of speed reducers, in particular to a speed reducer and hoisting equipment using the same. The speed reducer comprises at least one planetary gear train, wherein the planetary gear train comprises a sun gear, a plurality of planetary gears and a planetary carrier; in each planetary gear train, the sun gear is meshed with the planet gear, and the planet gear is arranged on the planet carrier; each planetary gear train is sequentially connected in a transmission way from a primary input direction to a final output direction; the planet carrier of the planetary gear train at the final stage comprises a main body and a plurality of cantilever planet shafts connected with the main body, and the open ends of the cantilever planet shafts are connected through a baffle plate. Hoisting equipment comprising a speed reducer as described. The invention is beneficial to reducing the possibility of deformation of the cantilever planet shaft after being stressed, thereby avoiding the premature failure of the planet wheel and the planet bearing arranged on the cantilever planet shaft.)

1. The speed reducer is characterized by comprising at least one planetary gear train, wherein the planetary gear train comprises a sun gear, a plurality of planet gears and a planet carrier; in each planetary gear train, the sun gear is meshed with the planet gear, and the planet gear is arranged on the planet carrier; each planetary gear train is sequentially connected in a transmission way from a primary input direction to a final output direction; the planet carrier of the planetary gear train at the final stage comprises a main body (102) and a plurality of cantilever planet shafts (101) connected with the main body (102), and the open ends of the cantilever planet shafts (101) are connected through a baffle plate (103).

2. A reducer according to claim 1, wherein a first mounting hole (104) is formed in an end surface of an open end of a cantilever planet shaft (101) of a carrier of the planetary gear train at the final stage, a plate surface of the baffle plate (103) has an extension shaft (105) extending in a first direction, and the first direction is arranged at an angle to the plate surface of the baffle plate (103); the protruding shaft (105) is inserted into the first mounting hole (104).

3. A reducer according to claim 1 or 2, in which the shield (103) is fixedly connected to the cantilever planet shaft (101) of the planet carrier of the planetary gear train in the final stage by fasteners.

4. A reducer according to claim 1 or 2, in which in the last planetary gear train, the cantilevered planet shaft (101) of its planet carrier is sleeved with a first double row bearing (109), and its planet wheels are mounted on its planet carrier by means of the first double row bearing (109).

5. A reducer according to claim 1 or 2, wherein the number of planetary gear trains is three, the three planetary gear trains being a primary planetary gear train, a secondary planetary gear train, and a final planetary gear train, respectively; the planet carrier of the primary planetary gear train is fixedly connected with the sun gear of the secondary planetary gear train, and the planet carrier of the secondary planetary gear train is fixedly connected with the sun gear of the final planetary gear train.

6. A reducer according to claim 5, wherein the secondary planetary gear train has a second double row bearing (110) sleeved on the planet shaft of its planet carrier, and its planet gears are mounted on its planet carrier by the second double row bearing (110).

7. The reducer according to claim 5, further comprising an end cover (120) and a housing (121), wherein the end cover (120) is fixedly connected with one end of the housing (121), the end cover (120) is provided with a first inner gear ring (122), and the planet wheels of the primary planetary gear train are meshed with the first inner gear ring (122);

the housing (121) has a second ring gear (123) and a third ring gear; the planet wheel of the secondary planetary gear train is meshed with the second inner gear ring (123), and the planet wheel of the final planetary gear train is meshed with the third inner gear ring.

8. A reducer according to claim 1 or 2, further comprising a spline housing (124), wherein the axle (125) of the sun gear of the planetary gear train on the primary side is in driving connection with the spline housing (124).

9. A reducer according to claim 1 or 2, further comprising a fixed mount (126), the planet carrier of the planetary gear train at the final stage being fixedly connected to the fixed mount (126).

10. Hoisting device, characterized in that it comprises a reducer according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of speed reducers, in particular to a speed reducer and hoisting equipment using the same.

Background

The hoisting speed reducer is generally applied to hoisting, drilling and other operations of main machines such as cranes, pile machines and the like. The winding speed reducer is arranged in the winding drum and is transmitted to the winding drum through the rotation of the speed reducer to drive the winding drum to rotate, one end of the steel wire rope is wound on the winding drum, and the other end of the steel wire rope is connected with a heavy object; when the winding drum rotates forwards, the steel wire rope is wound by the winding drum, and accordingly, the heavy object is lifted; when the drum is reversed, the wire rope is released and correspondingly the weight is lowered under the action of gravity.

According to different torque magnitudes, the hoisting planetary reducer can be designed into different stages, and the final stage part is most prone to damage and failure faults in the use process due to the fact that the final stage part is stressed most; due to space limitation, a planet carrier of the cantilever planet shaft is generally adopted in the final stage part, but the planet carrier adopting the cantilever planet shaft is easy to deform in the using process, so that the planet wheel and the planet bearing are failed early.

Disclosure of Invention

The invention aims to provide a speed reducer and hoisting equipment using the speed reducer, and aims to solve the technical problem that a planet wheel and a planet bearing are prematurely failed due to the fact that a planet carrier adopting a cantilever planet shaft is easy to deform in the prior art.

The invention provides a speed reducer, which comprises at least one planetary gear train, wherein the planetary gear train comprises a sun gear, a plurality of planetary gears and a planet carrier; in each planetary gear train, the sun gear is meshed with the planet gear, and the planet gear is arranged on the planet carrier; each planetary gear train is sequentially connected in a transmission way from a primary input direction to a final output direction; the planet carrier of the planetary gear train at the final stage comprises a main body and a plurality of cantilever planet shafts connected with the main body, and the open ends of the cantilever planet shafts are connected through a baffle plate. Cage planet carrier structure among the prior art, because need whole casting or forge out, the structure is complicated, and the surplus is big, and processing is also complicated, and the assembly degree of difficulty is big, and the cost is very high. The planet carrier in the form of the cantilever planet shaft adopted by the speed reducer provided by the invention can save space, is convenient to process and assemble, has low cost, and forms a new structure by adding a baffle plate structure at the open end of the cantilever planet shaft, namely, the open ends of a plurality of cantilever planet shafts of the planet carrier are connected into a whole, and because the open ends of the plurality of cantilever planet shafts are connected into a whole, the stress of each cantilever planet shaft is uniformly distributed to form a load balancing mechanism, the open end can not generate obvious bending deformation, and the structure is simple to process and assemble.

In any one of the above technical solutions, further, a first mounting hole is formed in an end surface of an open end of a cantilever planet shaft of a planet carrier of the last-stage planetary gear train, a plate surface of the baffle plate has an extension shaft extending in a first direction, and the first direction and the plate surface of the baffle plate are arranged at an angle; the extension shaft is inserted into the first mounting hole.

In any one of the above technical solutions, further, the baffle plate is fixedly connected to a cantilever planet shaft of the planet carrier of the planetary gear train at the final stage by a fastener.

In any of the above technical solutions, further, in the final planetary gear train, a first double-row bearing is sleeved on a cantilever planet shaft of the planet carrier, and the planet wheels are mounted on the planet carrier through the first double-row bearing. Adopt first double row bearing, can increase bearing roller extension, increase bearing roller diameter simultaneously, promoted bearing strength, can wholly promote speed reducer reliability and life-span, simple structure, processing, convenient assembling, with low costs, the innovation point is novel unique, need not great input, the practicality is strong.

In any one of the above technical solutions, further, the number of the planetary gear trains is three, and the three planetary gear trains are a primary planetary gear train, a secondary planetary gear train and a final planetary gear train respectively; the planet carrier of the primary planetary gear train is fixedly connected with the sun gear of the secondary planetary gear train, and the planet carrier of the secondary planetary gear train is fixedly connected with the sun gear of the final planetary gear train.

In any one of the above technical solutions, further, in the secondary planetary gear train, a second double-row bearing is sleeved on a planet shaft of a planet carrier of the secondary planetary gear train, and planet wheels of the secondary planetary gear train are mounted on the planet carrier of the secondary planetary gear train through the second double-row bearing.

In any one of the above technical solutions, further, the speed reducer further includes an end cover and a housing, the end cover is fixedly connected with one end of the housing, the end cover has a first inner gear ring, and the planet wheel of the primary planetary gear train is engaged with the first inner gear ring;

the machine shell is provided with a second inner gear ring and a third inner gear ring; the planet wheel of the secondary planetary gear train is meshed with the second inner gear ring, and the planet wheel of the final planetary gear train is meshed with the third inner gear ring.

In any one of the above technical solutions, further, the speed reducer further includes a spline housing, and an axle of the sun gear of the primary planetary gear train is in transmission connection with the spline housing.

In any one of the above technical solutions, further, the speed reducer further includes a fixed seat, and the planet carrier of the planetary gear train located at the final stage is fixedly connected with the fixed seat.

The invention also provides a hoisting device which comprises the speed reducer.

Compared with the prior art, the invention has the following beneficial effects:

the speed reducer provided by the invention comprises at least one planetary gear train, wherein the planetary gear train comprises a sun gear, a plurality of planetary gears and a planet carrier; in each planetary gear train, the sun gear is meshed with the planet gear, and the planet gear is arranged on the planet carrier; each planetary gear train is sequentially connected in a transmission way from a primary input direction to a final output direction; the planet carrier of the planetary gear train at the final stage comprises a main body and a plurality of cantilever planet shafts connected with the main body, and the open ends of the cantilever planet shafts are connected through a baffle plate. The sun wheel drives the planet wheels on the planet carrier to rotate so as to realize speed reduction, and the planet wheels are sequentially connected in a transmission manner from a primary input direction to a final output direction so as to realize gradual speed reduction.

The invention also provides hoisting equipment which comprises the speed reducer. Based on the analysis, the speed reducer is beneficial to reducing the possibility of deformation of the cantilever planet shaft after being stressed, so that the premature failure of the planet wheel and the planet bearing arranged on the speed reducer is avoided.

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 description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a speed reducer 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 a partially enlarged schematic view of a portion B in fig. 1.

Icon:

101-cantilever planet shaft; 102-a body; 103-a baffle; 104-a first mounting hole; 105-an extension shaft; 106-screw; 107-stepped through holes; 108-a threaded hole; 109-a first double row bearing; 110-a second double row bearing; 111-primary sun gear; 112-primary planet; 113-primary planet carrier; 114-secondary sun gear; 115-secondary planets; 116-secondary planet carrier; 117-final sun gear; 118-final planet; 119-final planet carrier; 120-an end cap; 121-a housing; 122-first ring gear; 123-a second ring gear; 124-spline housing; 125-axle; 126-a fixed seat; 127-double row conical bearing.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention 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 figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.