Lightweight hoisting machinery speed reducer

Abstract

The utility model relates to the technical field of hoisting machinery components, and discloses a light-weight hoisting machinery speed reducer which comprises an installation frame, a gear speed reducing mechanism is arranged in the installation frame, the installation frame comprises a magnesium alloy rectangular frame, and magnesium alloy shells are fixedly installed at the front end and the rear end of the magnesium alloy rectangular frame respectively. A first bearing seat is fixedly installed on one side of the top end of the magnesium alloy rectangular frame, and two first bearing seats are symmetrically and fixedly installed on one side of the bottom end of the magnesium alloy rectangular frame. The installation frame and the outer shell body of the whole speed reducer are made of magnesium alloy materials, the whole strength is guaranteed, meanwhile, the self weight is reduced, in addition, the gear speed reduction structural design that the spur gears, the gear sets and the planetary gear sets are combined is adopted in the whole, three-dimensional compact arrangement can be carried out, and compared with parallel arrangement, the structure is simple, and the structure is compact. And the occupied space is small, the dead weight of the whole speed reducer structure can be further reduced, and the speed reducer can meet the light-weight installation requirement.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery component technology, specifically a lightweight lifting machinery reducer. Background Technology

[0002] The reducer of lifting machinery is the core transmission component of lifting equipment (such as cranes, hoists, and elevators). It is mainly used to reduce the motor speed and amplify the torque to meet the low-speed heavy load requirements of lifting operations. It is usually a gear reducer with high transmission efficiency (over 90%) and compact structure. It is usually set in a combination of spur and helical gears.

[0003] The existing lifting machinery reducers still have the following problems when in use: Because they usually adopt a cast iron housing structure design, although they have good compressive strength, their actual weight is relatively large. At the same time, the internal multi-stage spur gear and helical gear reduction structure design with parallel arrangement occupies a lot of space, resulting in a large overall size and weight of the reducer, which cannot meet the requirements of lightweight installation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a lightweight lifting machinery reducer, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight lifting machinery reducer, including a mounting frame, within which a gear reduction mechanism is provided. The mounting frame includes a magnesium alloy rectangular frame, with a magnesium alloy housing fixedly installed at each of the front and rear ends of the magnesium alloy rectangular frame. A first bearing seat is fixedly installed on one side of the top of the magnesium alloy rectangular frame, and two first bearing seats are symmetrically fixedly installed on one side of the bottom of the magnesium alloy rectangular frame. A second bearing seat is fixedly installed at each of the upper and lower ends of one side of the magnesium alloy rectangular frame. The same power input shaft is slidably connected within the two symmetrically arranged first bearing seats on one side. A reduction gear is rotatably connected within the first bearing seat on the other side. A first reduction gear set is rotatably connected within the lower second bearing seat, and a power output shaft is rotatably connected within the upper second bearing seat. A second reduction gear set is fixedly connected to the bottom end of the power output shaft. A planetary gear reduction set is provided between the first reduction gear set and the second reduction gear set.

[0008] As a further embodiment of this utility model: two transmission gears are fixedly sleeved on the outer wall of the power input shaft from top to bottom. The two transmission gears are respectively matched with the reduction gear and the upper gear pair of the second reduction gear set, and the lower transmission gear meshes with the reduction gear.

[0009] As a further embodiment of this utility model: the other side of the reduction gear is meshed with the lower gear pair of the first reduction gear set, the planetary gear reduction set includes a planet carrier rotatably mounted between the first reduction gear set and the second reduction gear set, and a planet gear is rotatably connected to each end of the planet carrier. The upper ends of the two planet gears are meshed with the lower gear pair of the second reduction gear set, and the lower ends of the two planet gears are meshed with the upper gear pair of the first reduction gear set.

[0010] As a further improvement of this utility model: each end of the mounting frame is fixedly connected to a mounting base, and two mounting holes are symmetrically opened between the two side walls of the mounting base.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the mounting frame and outer shell of the overall reducer are made of magnesium alloy, which reduces the weight while ensuring the overall strength. In addition, the overall gear reduction structure design combines spur gears, gear sets and planetary gear sets, which can be arranged in a compact three-dimensional manner. Compared with the parallel arrangement, it occupies less space, which can further reduce the weight of the overall reducer structure and make the reducer meet the requirements of lightweight installation.

[0013] 2. In this utility model, two-stage gear reduction transmission can be performed. The input gear shaft is equipped with two transmission gears, which can respectively transmit power to the first-stage gear reduction structure and the second-stage gear reduction structure to achieve reduction transmission with different speed ratios, which is quite convenient. Attached Figure Description

[0014] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0015] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0016] Figure 3 This is a perspective view of the mounting frame and gear reduction mechanism of this utility model.

[0017] In the diagram: 1. Mounting frame; 2. Gear reduction mechanism; 3. Magnesium alloy housing; 4. Mounting base; 5. Mounting hole; 11. Magnesium alloy rectangular frame; 12. First bearing housing; 13. Second bearing housing; 21. Power input shaft; 22. Transmission gear; 23. Reduction gear; 24. Power output shaft; 25. First reduction gear set; 26. Second reduction gear set; 27. Planetary carrier; 28. Planetary gear. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figures 1-3In this embodiment of the utility model, the lightweight lifting machinery reducer includes a mounting frame 1, a gear reduction mechanism 2 is provided inside the mounting frame 1, the mounting frame 1 includes a magnesium alloy rectangular frame 11, a magnesium alloy housing 3 is fixedly installed at each of the front and rear ends of the magnesium alloy rectangular frame 11, a first bearing seat 12 is fixedly installed on one side of the top of the magnesium alloy rectangular frame 11, two first bearing seats 12 are symmetrically fixedly installed on one side of the bottom of the magnesium alloy rectangular frame 11, a second bearing seat 13 is fixedly installed at each of the upper and lower ends of one side of the magnesium alloy rectangular frame 11, the same power input shaft 21 is slidably connected in the two first bearing seats 12 arranged symmetrically on one side, and a reduction gear 23 is rotatably connected in the first bearing seat 12 on the other side. The first reduction gear set 25 is rotatably connected inside the second bearing housing 13, and the power output shaft 24 is rotatably connected inside the upper second bearing housing 13. The bottom end of the power output shaft 24 is fixedly connected to the second reduction gear set 26. A planetary gear reduction set is provided between the first reduction gear set 25 and the second reduction gear set 26. The mounting frame 1 and the outer shell of the entire reducer are made of magnesium alloy, which reduces the weight while ensuring the overall strength. In addition, the overall gear reduction structure design combines spur gears, gear sets and planetary gear sets, which can be arranged in a three-dimensional and compact manner. Compared with the parallel arrangement, it occupies less space, which can further reduce the weight of the overall reducer structure and make the reducer meet the requirements of lightweight installation.

[0022] Two transmission gears 22 are fixedly sleeved on the outer wall of the power input shaft 21 from top to bottom. The two transmission gears 22 are matched with the reduction gear 23 and the upper gear pair of the second reduction gear set 26, respectively. The lower transmission gear 22 meshes with the reduction gear 23. The power input shaft 21 can input power, which can drive the upper and lower transmission gears 22 to rotate. The lower transmission gear 22 can drive the reduction gear 23 to rotate, thereby achieving deceleration.

[0023] The other side of the reduction gear 23 is meshed with the lower gear pair of the first reduction gear set 25. The planetary gear reduction set includes a planet carrier 27 rotatably mounted between the first reduction gear set 25 and the second reduction gear set 26. Each end of the planet carrier 27 is rotatably connected to a planet gear 28. The upper ends of the two planet gears 28 are meshed with the lower gear pair of the second reduction gear set 26, and the lower ends of the two planet gears 28 are meshed with the upper gear pair of the first reduction gear set 25. When the reduction gear 23 rotates, it can drive the first reduction gear set 25 below to rotate, which in turn drives the planetary gear reduction set to rotate, and finally drives the second reduction gear set 26 to rotate, thereby realizing the reduction power output of the power output shaft 24.

[0024] The mounting frame 1 is fixedly connected to a mounting base 4 at each end. The mounting base 4 has two mounting holes 5 symmetrically opened between its two side walls. The entire reducer can be installed on a crane by using the mounting holes 5 on the mounting base 4 on both sides to cooperate with the mounting components.

[0025] The working principle of this utility model is as follows: The integral reducer can be installed on a crane by mounting the mounting holes 5 on the mounting seats 4 on both sides and the mounting components. The power input shaft 21 can be connected to an external drive device to input power, which can drive the upper and lower transmission gears 22 to rotate. The lower transmission gear 22 can drive the reduction gear 23 to rotate, thereby reducing speed. The rotation of the reduction gear 23 can drive the lower first reduction gear set 25 to rotate, which in turn drives the planetary gear reduction set to rotate, and finally drives the second reduction gear set 26 to rotate, thereby realizing the reduction power output of the power output shaft 24. Alternatively, the power input shaft 21 can be moved to disengage the lower transmission gear 22 from the reduction gear 23 and make the upper transmission gear 22 mesh with the upper gear pair of the second reduction gear set 26 to perform reduction transmission work, so as to realize reduction transmission work with different speed ratios, which is more convenient.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight lifting machinery reducer, comprising a mounting frame (1), wherein a gear reduction mechanism (2) is provided within the mounting frame (1); characterized in that The mounting frame (1) includes a magnesium alloy rectangular frame (11), and a magnesium alloy shell (3) is fixedly installed at each of the front and rear ends of the magnesium alloy rectangular frame (11). A first bearing seat (12) is fixedly installed on one side of the top of the magnesium alloy rectangular frame (11), and two first bearing seats (12) are fixedly installed symmetrically on one side of the bottom of the magnesium alloy rectangular frame (11). A second bearing seat (13) is fixedly installed at each of the upper and lower ends of one side of the magnesium alloy rectangular frame (11). Two first bearing seats (12) arranged symmetrically on one side are slidably connected to the same power input shaft (21), and a reduction gear (23) is rotatably connected to the first bearing seat (12) on the other side. A first reduction gear set (25) is rotatably connected inside the second bearing housing (13) below, and a power output shaft (24) is rotatably connected inside the second bearing housing (13) above. A second reduction gear set (26) is fixedly connected to the bottom end of the power output shaft (24), and a planetary gear reduction set is provided between the first reduction gear set (25) and the second reduction gear set (26).

2. The lightweight hoisting machinery speed reducer of claim 1, wherein: Two transmission gears (22) are fixedly sleeved on the outer wall of the power input shaft (21) from top to bottom.

3. The lightweight hoisting machine reduction machine of claim 2, wherein: The two transmission gears (22) are respectively matched with the reduction gear (23) and the upper gear pair of the second reduction gear set (26), and the lower transmission gear (22) meshes with the reduction gear (23).

4. The lightweight hoisting machine reduction machine of claim 1, wherein: The reduction gear (23) meshes with the gear pair below the first reduction gear set (25) on the other side.

5. The lightweight hoisting machinery reduction machine of claim 1, wherein: The planetary gear reduction assembly includes a planet carrier (27) rotatably mounted between a first reduction gear set (25) and a second reduction gear set (26), with a planetary gear (28) rotatably connected to each end of the planet carrier (27).

6. The lightweight hoisting machine reduction machine of claim 5, wherein: The upper ends of the two planetary gears (28) are meshed with the lower gear pair of the second reduction gear set (26), and the lower ends of the two planetary gears (28) are meshed with the upper gear pair of the first reduction gear set (25).

7. The lightweight hoisting machinery reduction machine of claim 1, wherein: The mounting frame (1) is fixedly connected to a mounting base (4) at each end, and two mounting holes (5) are opened between the two side walls of the mounting base (4) in a vertically symmetrical manner.

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