A special reducer for a crane hoisting mechanism

Abstract

The utility model discloses a special speed reducer of crane hoisting mechanism, it includes the speed reducer box body, the input tooth axle of detachable assembly in the speed reducer box body and the first tooth axle, second tooth axle and output shaft that arrange set gradually in the inside of speed reducer box body, the second tooth axle is engaged transmission with first tooth axle, and the output shaft is engaged transmission with second tooth axle, the first input chamber and the second input chamber of adjacent are seted up in the inside of speed reducer box body, when the input tooth axle is assembled in the first input chamber, the input tooth axle is engaged transmission with first tooth axle through transmission tooth axle, and forms five axle linkage state, when the input tooth axle is assembled in the second input chamber, the input tooth axle is engaged transmission with first tooth axle, and forms four axle linkage state, the utility model discloses through single box body can realize multiple center distance replacement, effectively reduces the cost of speed reducer selection type, and the more wide scope of application.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a special speed reducer for crane hoisting mechanisms. Background Technology

[0002] The hoisting mechanism of a crane typically consists of a motor-driven wire rope drum that is reduced in speed and torque by a reducer. The input shafts of the motor and reducer are connected by a coupling, and the drum is connected to and directly supported by the output shaft of the reducer via a drum coupling. The drum and motor are located on the same side of the reducer. The design and selection of the crane's hoisting mechanism involves choosing a matching motor and reducer model based on the drum's working torque, speed, and working level. After determining the motor specifications, a reducer with a suitable center distance and load-bearing capacity is selected, taking into account the space requirements that prevent interference with the drum's dimensions.

[0003] Currently, the commonly used H-series standard industrial gearboxes are widely used in the crane industry due to their compact structure, reliable performance, and numerous manufacturers. However, because of their compact structure and high load-bearing capacity, some models with limited space for the motor and drum have to use larger models with excessive load-bearing capacity to meet center distance requirements, resulting in wasted selection and increased overall manufacturing costs. Especially when the center distances of the motor and drum vary, different gearbox reducers often need to be selected for individual adaptation, leading to higher reducer costs and wasted gearbox models. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a special reducer for crane hoisting mechanism. It can realize multiple center distance changes through a single housing, effectively reducing the cost of reducer selection and having a wider range of applications.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A special reducer for crane hoisting mechanism includes a reducer housing, an input gear shaft detachably assembled inside the reducer housing, and a first gear shaft, a second gear shaft, and an output shaft arranged sequentially inside the reducer housing. The second gear shaft meshes with the first gear shaft for transmission, and the output shaft meshes with the second gear shaft for transmission; The reducer housing has adjacent first and second input cavities. When the input gear shaft is assembled in the first input cavity, the input gear shaft meshes with the first gear shaft through the transmission gear shaft, forming a five-axis linkage state; When the input gear shaft is assembled in the second input cavity, the input gear shaft meshes with the first gear shaft and forms a four-axis linkage state.

[0006] Furthermore, the transmission gear shaft is assembled in the second input cavity in a five-axis linkage state.

[0007] Furthermore, in the five-axis configuration, the outer ends of the first and second input cavities are sealed with a first cap. In quadcopter mode, the outer ends of the first and second input cavities are sealed by a second cover.

[0008] Furthermore, a first gear is provided on the first gear shaft, a second gear is provided on the second gear shaft, and an output gear is provided on the output shaft; The output gear meshes with the toothed section of the second gear shaft, and the second gear meshes with the toothed section of the first gear shaft.

[0009] Furthermore, a transmission gear is provided on the transmission gear shaft; In the five-axis configuration, the first gear meshes with the toothed section of the transmission gear shaft, and the transmission gear meshes with the toothed section of the input gear shaft. In the four-axis configuration, the first gear meshes with the toothed section of the input gear shaft.

[0010] Furthermore, the output gear is located inside the front side of the reducer housing, and the second gear shaft with toothed section is located at the front. The second gear is located at the rear of the second gear shaft, and the toothed section of the first gear shaft is located at the rear.

[0011] Furthermore, the first gear is disposed at the front of the first gear shaft, the toothed section of the transmission gear shaft is located at the front, and the transmission gear is disposed at the rear of the transmission gear shaft; In the five-axis configuration, the toothed section of the input gear shaft is located inside the rear side of the reducer housing; In the four-axis configuration, the toothed section of the input gear shaft is located inside the front of the reducer housing.

[0012] Furthermore, the front end of the output shaft extends out of the reducer housing, and the input gear shaft is a double-ended input with both the front and rear ends extending out of the reducer housing.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects: 1. This utility model utilizes the adjacent design of the first and second input chambers within the reducer housing. By using detachable input and transmission gear shafts, a five-axis linkage reducer with a large center distance can be formed by installing the input gear shaft into the first input chamber and the transmission gear shaft into the second input chamber. Conversely, by installing the input gear shaft into the second input chamber and removing the transmission gear shaft, a four-axis linkage reducer with a small center distance can be formed. Thus, by selecting the position of the input gear shaft, various center distance requirements can be met. Only a single reducer housing is needed, enabling multiple uses in one unit, effectively reducing the cost of reducer selection, and broadening the application range.

[0014] 2. The internal structure of this utility model is compactly arranged. Through the staggered meshing transmission between the gears and tooth shafts, the internal parts layout space is optimized, thereby reducing the overall size and weight and saving the material cost of the box and parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure in the five-axis state of this utility model embodiment; Figure 2 This is a schematic diagram of the internal structure layout in the five-axis state of this utility model embodiment; Figure 3 This is a schematic diagram of the front structure in a four-axis configuration according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure layout in a four-axis configuration according to an embodiment of the present invention; Among them, 1. reducer housing; 101. first input chamber; 102. second input chamber; 2. input gear shaft; 3. first gear shaft; 30. first gear; 4. second gear shaft; 40. second gear; 5. output shaft; 50. output gear; 6. transmission gear shaft; 60. transmission gear; 7. first cover; 8. second cover. Detailed Implementation

[0016] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] like Figure 1-4 As shown in this embodiment, a special reducer for a crane hoisting mechanism is provided. It mainly consists of a reducer housing 1, an input gear shaft 2, a first gear shaft 3, a second gear shaft 4, an output shaft 5, and a transmission gear shaft 6. The transmission gear shaft 6 can be installed or removed depending on the required center distance, and the input gear shaft 2 can be repositioned to meet different center distance requirements.

[0018] Specifically, the input gear shaft 2 is detachably mounted inside the reducer housing 1 on the left side, and is rotatably mounted to the housing via bearings; the first gear shaft 3, the second gear shaft 4, and the output shaft 5 are arranged sequentially from left to right inside the reducer housing 1, located to the right of the input gear shaft 2, and are rotatably mounted to the housing via bearings. The second gear shaft 4 meshes with the first gear shaft 3 for transmission, and the output shaft 5 meshes with the second gear shaft 4 for transmission.

[0019] To accommodate the selective mounting position of the input gear shaft 2, a first input cavity 101 and a second input cavity 102 are adjacent to each other on the left side of the reducer housing 1. The second input cavity 102 is located immediately adjacent to the first gear shaft 3. When the input gear shaft 2 is mounted in the first input cavity 101, the transmission gear shaft 6 is mounted in the second input cavity 102. The input gear shaft 2 engages with the first gear shaft 3 via the transmission gear shaft 6, thus forming a five-axis linkage state to meet the large center distance requirement. When the input gear shaft 2 is mounted in the second input cavity 102, the transmission gear shaft 6 is temporarily removed and not used. The input gear shaft 2 engages with the first gear shaft 3, thus forming a four-axis linkage state to meet the small center distance requirement. In this way, by selecting the position of the input gear shaft 2, various center distance requirements can be achieved. Only a single reducer housing 1 is needed, making it a multi-purpose machine that effectively reduces the cost of reducer selection and has a wider range of applications.

[0020] Different sealing caps are required for the two states mentioned above. Therefore, in this embodiment, the outer ends of the first input cavity 101 and the second input cavity 102 are sealed by the first sealing cap 7 in the five-axis state, and the outer ends of the first input cavity 101 and the second input cavity 102 are sealed by the second sealing cap 8 in the four-axis state. The first sealing cap 7 and the second sealing cap 8 are adaptively matched according to the different positions of the input gear shaft 2.

[0021] To ensure the performance and normal operation of the reducer, in this embodiment, a first gear 30 is mounted on the first gear shaft 3 via a key, a second gear 40 is mounted on the second gear shaft 4 via a key, and an output gear 50 is mounted on the output shaft 5 via a key. The output gear 50 meshes with the toothed section of the second gear shaft 4, and the second gear 40 meshes with the toothed section of the first gear shaft 3. Simultaneously, a transmission gear 60 is mounted on the transmission gear shaft 6 via a key. In the five-axis configuration, the first gear 30 meshes with the toothed section of the transmission gear shaft 6, and the transmission gear 60 meshes with the toothed section of the input gear shaft 2. Thus, the input gear shaft 2, driven by the motor, rotates the transmission gear 60 and the transmission gear shaft 6, which in turn rotates the first gear 30 and the first gear shaft 3, then the second gear 40 and the second gear shaft 4, and finally the output gear 50 and the output shaft 5 to complete the output. In the four-axis mode, the first gear 30 meshes with the toothed section of the input gear shaft 2. Thus, the input gear shaft 2, driven by the motor, directly drives the first gear 30 and the first gear shaft 3 to rotate, which in turn drives the second gear 40 and the second gear shaft 4 to rotate, and finally drives the output gear 50 and the output shaft 5 to rotate to complete the output.

[0022] To further optimize the internal space, in this embodiment, the output gear 50 is located inside the front of the reducer housing 1, and the toothed section of the second gear shaft 4 is located at the front. Figure 2 , Figure 4 Below; the second gear 40 is located at the rear of the second gear shaft 4, and the toothed section of the first gear shaft 3 is located at the rear, that is... Figure 2 , Figure 4 Above the gearbox 3, the first gear 30 is located at the front of the first gear shaft 3, the toothed section of the transmission gear shaft 6 is located at the front, and the transmission gear 60 is located at the rear of the transmission gear shaft 6. In the five-axis configuration, the toothed section of the input gear shaft 2 is located inside the rear of the reducer housing 1; in the four-axis configuration, the toothed section of the input gear shaft 2 is located inside the front of the reducer housing 1. That is, the input gear shaft 2 is installed in reverse order in both configurations. Thus, the internal structure of this embodiment is compactly arranged. Through the staggered meshing transmission between the internal gears and the toothed sections of the gear shafts, the internal parts layout space is optimized, thereby reducing the overall size and weight, and saving on housing and parts material costs.

[0023] In addition, for ease of practical use, in this embodiment, the front end of the output shaft 5 extends out of the reducer housing 1, and the input gear shaft 2 is a double-ended input shaft with both ends extending out of the reducer housing 1. One end of the input gear shaft 2 is connected to the motor, and the other end can be connected to the brake. When the brake is not required, it can also be designed as a single-ended input shaft.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above specific embodiments further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dedicated reducer for crane hoisting mechanisms, characterized in that: It includes a reducer housing (1), an input gear shaft (2) detachably assembled inside the reducer housing (1), and a first gear shaft (3), a second gear shaft (4) and an output shaft (5) arranged sequentially inside the reducer housing (1); The second gear shaft (4) meshes with the first gear shaft (3) for transmission, and the output shaft (5) meshes with the second gear shaft (4) for transmission; The reducer housing (1) has an adjacent first input cavity (101) and a second input cavity (102). When the input gear shaft (2) is assembled in the first input cavity (101), the input gear shaft (2) meshes with the first gear shaft (3) through the transmission gear shaft (6) and forms a five-axis linkage state; When the input gear shaft (2) is assembled in the second input cavity (102), the input gear shaft (2) meshes with the first gear shaft (3) and forms a four-axis linkage state.

2. The reducer for a crane hoisting mechanism according to claim 1, characterized in that: The transmission gear shaft (6) is assembled in the second input cavity (102) in the five-axis linkage state.

3. The reducer for a crane hoisting mechanism according to claim 1, characterized in that: In five-axis mode, the outer ends of the first input cavity (101) and the second input cavity (102) are sealed by the first cover (7); In quadcopter mode, the outer ends of the first input cavity (101) and the second input cavity (102) are sealed by the second cover (8).

4. A special reducer for a crane hoisting mechanism according to claim 1, characterized in that: A first gear (30) is provided on the first gear shaft (3), a second gear (40) is provided on the second gear shaft (4), and an output gear (50) is provided on the output shaft (5). The output gear (50) meshes with the toothed section of the second gear shaft (4), and the second gear (40) meshes with the toothed section of the first gear shaft (3).

5. A special reducer for a crane hoisting mechanism according to claim 4, characterized in that: A transmission gear (60) is provided on the transmission gear shaft (6). In the five-axis state, the first gear (30) meshes with the toothed section of the transmission gear shaft (6), and the transmission gear (60) meshes with the toothed section of the input gear shaft (2); In the four-axis configuration, the first gear (30) meshes with the toothed section of the input gear shaft (2).

6. A special reducer for a crane hoisting mechanism according to claim 5, characterized in that: The output gear (50) is located inside the front side of the reducer housing (1), and the toothed section of the second gear shaft (4) is located at the front. The second gear (40) is located at the rear of the second gear shaft (4), and the toothed section of the first gear shaft (3) is located at the rear.

7. A special reducer for a crane hoisting mechanism according to claim 6, characterized in that: The first gear (30) is located at the front of the first gear shaft (3), the toothed section of the transmission gear shaft (6) is located at the front, and the transmission gear (60) is located at the rear of the transmission gear shaft (6). In the five-axis configuration, the toothed section of the input gear shaft (2) is located inside the rear side of the reducer housing (1); In the four-axis configuration, the toothed section of the input gear shaft (2) is located inside the front side of the reducer housing (1).

8. A special reducer for a crane hoisting mechanism according to claim 1, characterized in that: The front end of the output shaft (5) extends out of the reducer housing (1), and the input gear shaft (2) is a double-ended input with both ends extending out of the reducer housing (1).

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