A compression gearbox main oil pump structure

Abstract

The application relates to the technical field of main oil pump structures, and discloses a compression gear box main oil pump structure, which is characterized in that when a main motor driving shaft is started, only the starting from static to rotation of the main load is realized, the starting of the main oil pump needs the main motor driving shaft to rotate to a certain rotating speed, then the transmission drive can be formed, the linkage effect between the components is formed by using the mechanical structure, the synergy is good, and the application is more practical, the compression gear box main oil pump structure comprises a main oil pump, a gear box body and a main motor driving shaft, the main motor driving shaft is rotationally connected in the gear box body, the right end of the main motor driving shaft extends to the right side of the gear box body, a reduced diameter section is arranged on the main motor driving shaft, a driven cylinder is rotationally connected on the reduced diameter section, a centrifugal contact driving assembly is installed on the reduced diameter section, the centrifugal contact driving assembly is matched with the driven cylinder, the driven cylinder is installed with an internal driving gear, the internal driving gear is located in the interior of the gear box body, the main oil pump is installed at the right end of the gear box body, and the pump shaft of the main oil pump extends into the interior of the gear box body.

Description

Technical Field

[0001] This invention relates to the field of main oil pump structure technology, specifically to a compression gearbox main oil pump structure. Background Technology

[0002] As is well known, the compression gearbox main oil pump structure is a transmission structure used between the main oil pump and the gearbox.

[0003] A search revealed that Chinese patent CN110821877A, published on February 21, 2020, discloses a connection structure for a mechanical oil pump in a geared compressor. The structure includes a connecting plate, a bearing housing, and a rotating shaft. The bearing housing is detachably connected to the connecting plate, which is used to fix the main oil pump. The rotating shaft is rotatably connected within the bearing housing. One end of the rotating shaft is fixed to the driven gear in the gearbox, while the other end is detachably connected to the main oil pump and drives it. In use, when the main oil pump is damaged and needs to be replaced separately, the main oil pump can be replaced simply by removing it from the connecting plate and separating the rotating shaft from the main oil pump. This eliminates the need to remove the compressor gearbox cover, thus solving the problem of inconvenient main oil pump replacement in existing installation structures.

[0004] While the aforementioned existing technical solutions have achieved the transmission structure between the geared compressor and the mechanical oil pump, the main power output of the compressor's compression gearbox is the impeller and other structures that form air compression. Therefore, the drive of the main oil pump is only an auxiliary structure formed for the lubrication of the compression gearbox. Thus, it is crucial to reduce the additional load at the moment of initial external power input and ensure the stable and efficient start-up of the impeller and other main loads in the compression gearbox. The aforementioned technical solutions address this aspect relatively little. Therefore, it is also essential to further optimize the transmission structure between the main oil pump and the gearbox, ensure stable and efficient impeller drive, effectively reduce the instantaneous transmission force at the moment the compression gearbox begins to move, and reduce the transmission loss between the multiple gears that drive each other within the compression gearbox. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a compression gearbox main oil pump structure. When the main motor drive shaft starts, it only initiates the main load from a standstill to rotation. However, the main oil pump requires the main motor drive shaft to rotate to a certain speed before transmission can be established. By utilizing the mechanical structure, a linkage effect is formed between the various components, resulting in better coordination and greater practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a compression gearbox main oil pump structure, including a main oil pump, a gearbox body, and a main motor drive shaft. The main motor drive shaft is rotatably connected to the gearbox body, and the right end of the main motor drive shaft extends to the right side of the gearbox body. A reduced diameter section is provided on the main motor drive shaft, and a driven cylinder is rotatably connected to the reduced diameter section. A centrifugal contact drive assembly is installed on the reduced diameter section, and the centrifugal contact drive assembly matches the driven cylinder. An internal drive gear is installed on the driven cylinder, and the internal drive gear is located inside the gearbox body. The main oil pump is installed at the right end of the gearbox body, and its pump shaft extends into the interior of the gearbox body. An internal driven gear is installed on the pump shaft, and the internal driven gear is also located inside the gearbox body. The internal driven gear and the internal drive gear mesh with each other.

[0009] Based on the aforementioned scheme, the centrifugal contact drive assembly includes multiple centrifugal frames, multiple wedge-shaped grooves are provided on the reduced diameter section, the multiple centrifugal frames are rotatably connected in the multiple wedge-shaped grooves, a reset structure is connected to each of the multiple centrifugal frames, the multiple reset structures are connected to the reduced diameter section, a friction surface is provided on each of the multiple centrifugal frames, and a contact drive ring matching the friction surface is provided on the inner side of the driven cylinder.

[0010] Based on the aforementioned scheme, each of the multiple reset structures includes a connector, which is connected to a multiple centrifuge frame. Each connector is connected to a sliding column. The reduced diameter section has multiple slots, and each slot has an elastic spring fixedly connected to it. Each elastic spring is connected to a multiple sliding column.

[0011] Based on the aforementioned scheme, a first connecting post and a second connecting post are fixedly connected to each of the multiple connectors, and a first guide strip hole and a second guide strip hole are opened on each of the multiple centrifuge racks. The multiple first connecting posts are respectively connected to the multiple first guide strip holes, and the multiple second connecting posts are respectively connected to the multiple second guide strip holes.

[0012] Based on the aforementioned scheme, multiple first connecting posts and second connecting posts are rotatably connected to guide strip frames, and multiple guide strip frames are slidably connected in multiple first guide strip holes and multiple second guide strip holes, respectively.

[0013] Based on the aforementioned scheme, both ends of the driven cylinder are provided with annular grooves, and two connecting rings are fixedly connected inside the main motor drive shaft, with the two connecting rings respectively connected to the two annular grooves.

[0014] Based on the aforementioned scheme, each of the multiple wedge-shaped grooves is fixedly connected to a fixed shaft, and the multiple centrifuge frames are rotatably connected to the multiple fixed shafts respectively.

[0015] Based on the aforementioned scheme, the driven cylinder is divided into two semi-cylinder structures, and the two semi-cylinder structures are fixedly assembled and connected by multiple connecting bolts.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a main oil pump structure for a compression gearbox, which has the following advantages:

[0018] In this invention, the transmission structure between the driven cylinder and the main oil pump is formed by the cooperation of the internal driven gear and the internal driving gear. The transmission structure between the reduced diameter section and the driven cylinder is formed by the design of the centrifugal contact drive component. When the main motor drive shaft starts from a standstill, there is no driving effect between the reduced diameter section and the driven cylinder. When the main motor drive shaft starts, it only realizes the start of the main load from standstill to rotation. However, when the speed of the main motor drive shaft is higher than the set speed, the centrifugal contact drive component can realize the transmission drive between the reduced diameter section and the driven cylinder. By utilizing the mechanical structure, a linkage effect is formed between the components, which has good coordination and is more practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention, which is mounted relative to the compression gearbox.

[0020] Figure 2 This is a partial cross-sectional structural diagram of the main motor drive shaft, the reduced diameter section, and the driven cylinder of the present invention.

[0021] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A;

[0022] Figure 4 This is a three-dimensional structural schematic diagram showing a partial cross-section of the main motor drive shaft, the reduced diameter section, and the driven cylinder of the present invention.

[0023] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B;

[0024] Figure 6 This is a three-dimensional structural schematic diagram showing a partial cross-section of the reduced diameter section, centrifuge frame, and connecting parts of the present invention.

[0025] Figure 7 This is a partially exploded three-dimensional structural diagram of the fit between the reduced diameter section, connector, and sliding column of the present invention.

[0026] Figure 8 This is a three-dimensional structural schematic diagram showing a partial cross-section of the reduced diameter section of the present invention;

[0027] Figure 9This is a three-dimensional structural diagram of the driven cylinder and connecting bolts of the present invention.

[0028] In the diagram: 1. Main oil pump; 2. Gearbox housing; 3. Main motor drive shaft; 4. Reduced diameter section; 5. Driven cylinder; 6. Internal drive gear; 7. Internal driven gear; 8. Centrifugal frame; 9. Wedge groove; 10. Friction surface; 11. Contact drive ring; 12. Connecting piece; 13. Sliding column; 14. Hole groove; 15. Elastic spring; 16. First connecting column; 17. Second connecting column; 18. First guide bar hole; 19. Second guide bar hole; 20. Guide bar bracket; 21. Annular groove; 22. Connecting ring; 23. Fixed shaft; 24. Connecting bolt. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example

[0031] Please see the appendix Figure 1 - Appendix Figure 9 A compression gearbox main oil pump structure includes a main oil pump 1, a gearbox body 2, and a main motor drive shaft 3. The main motor drive shaft 3 is rotatably connected inside the gearbox body 2, and its right end extends to the right side of the gearbox body 2. A reduced diameter section 4 is provided on the main motor drive shaft 3, and a driven cylinder 5 is rotatably connected to the reduced diameter section 4. A centrifugal contact drive assembly is installed on the reduced diameter section 4 and is matched with the driven cylinder 5. The centrifugal contact drive assembly includes multiple centrifugal frames 8. Multiple wedge-shaped grooves 9 are formed on the reduced diameter section 4, and the multiple centrifugal frames 8 are rotatably connected to the multiple wedge-shaped grooves 9. Each of the multiple centrifugal frames 8 is connected to a reset structure, and the multiple reset structures are connected to the reduced diameter section 4. The centrifugal frame 8 is connected, and each of the multiple centrifugal frames 8 is provided with a friction surface 10. The inner side of the driven cylinder 5 is provided with a contact drive ring 11 that matches the friction surface 10. Through the design of the centrifugal contact drive assembly, a transmission structure is formed between the reduced diameter section 4 and the driven cylinder 5. When the main motor drive shaft 3 starts from a standstill, there is no driving effect between the reduced diameter section 4 and the driven cylinder 5. When the main motor drive shaft 3 starts, it only realizes the start of the main load from standstill to rotation. However, when the speed of the main motor drive shaft 3 is higher than the set speed, the centrifugal contact drive assembly can realize the transmission drive between the reduced diameter section 4 and the driven cylinder 5. By utilizing the mechanical structure, a linkage effect is formed between the components, which has good coordination and is more practical.

[0032] It should be further explained that each of the multiple reset structures includes a connector 12, which is connected to multiple centrifuge frames 8 respectively. Each connector 12 is connected to a sliding column 13. Multiple slots 14 are formed on the reduced diameter section 4, and elastic springs 15 are fixedly connected within each slot 14. These elastic springs 15 are connected to the sliding columns 13 respectively, facilitating the reset of the centrifuge frame 8 after the reduced diameter section 4 rotates, lowers, and stops, separating it from the rotating contact drive ring 11. This is to prevent failure of the transmission between the reduced diameter section 4 and the driven cylinder 5, and to facilitate the failure of the additional load driving effect when the main motor drive shaft 3 restarts. Each connector 12 is fixedly connected to a first connecting column 16 and a second connecting column 17. Each centrifuge frame 8 has a first guide bar hole 18 and a second guide bar hole 19. Each first connecting post 16 is connected to a plurality of first guide bar holes 18, and each second connecting post 17 is connected to a plurality of second guide bar holes 19, ensuring the connection between the centrifuge frame 8 and the connector 12 while allowing the connection between the two to have the adjustment freedom of the centrifuge frame 8. Each of the plurality of first connecting posts 16 and second connecting posts 17 is rotatably connected to a guide bar frame 20, and the plurality of guide bar frames 20 are slidably connected to the plurality of first guide bar holes 18 and the plurality of second guide bar holes 19. Both ends of the driven cylinder 5 are provided with annular grooves 21. Two connecting rings 22 are fixedly connected inside the main motor drive shaft 3, and the two connecting rings 22 are respectively connected to the two annular grooves 21. Each of the plurality of wedge grooves 9 is fixedly connected to a fixed shaft 23, and the plurality of centrifuge frames 8 are rotatably connected to the plurality of fixed shafts 23.

[0033] It should be further explained that an internal drive gear 6 is installed on the driven cylinder 5. The internal drive gear 6 is located inside the gearbox 2. The main oil pump 1 is installed at the right end of the gearbox 2. The pump shaft of the main oil pump 1 extends into the gearbox 2. An internal driven gear 7 is installed on the pump shaft. The internal driven gear 7 is also located inside the gearbox 2. The internal driven gear 7 and the internal drive gear 6 mesh with each other. Through the cooperation of the internal driven gear 7 and the internal drive gear 6, a transmission structure is formed between the driven cylinder 5 and the main oil pump 1. The driven cylinder 5 is divided into two half-cylinder structures. The two half-cylinder structures are fixedly assembled and connected by multiple connecting bolts 24, which facilitates the assembly of the driven cylinder 5 relative to the reduced diameter section 4.

[0034] In summary, the working process of this compression gearbox main oil pump structure is as follows: First, the compression gearbox main oil pump structure is placed at the desired location, and the main motor drive shaft 3 is connected to an external drive device such as an electric motor. When the main motor drive shaft 3 is stationary, the sliding column 13 is inserted into the slot 14 due to the action of the elastic spring 15. Since the connecting piece 12 is connected to the centrifugal frame 8, the elastic spring 15 causes the centrifugal frame 8 to rotate relative to the reduced diameter section 4. In this state, the friction surface 10 on the centrifugal frame 8 is separated from the contact drive frame. When the external drive device starts, driving the main motor drive shaft 3 from a stationary state to a rotating state, the rotating reduced diameter section 4 drives multiple centrifugal frames 8 to rotate synchronously. Since multiple centrifugal frames 8 have a certain positional deviation relative to the axis of the reduced diameter section 4, the centrifugal frames 8 will be subjected to centrifugal force due to the rotation of the reduced diameter section 4. This centrifugal force increases with the increase of the rotational speed of the reduced diameter section 4. Initially, the main motor drive shaft 3 rotates at a low speed, therefore the centrifugal force possessed by the centrifugal frames 8 is insufficient to overcome the centrifugal force. The centrifugal frame 8 rotates due to the elasticity of the spring 15. Therefore, in the initial stage of the rotation of the main motor drive shaft 3, only the main functional load is driven, while the load of the main oil pump 1 is not driven. As the speed of the main motor drive shaft 3 increases, the speed of the multiple centrifugal frames 8 driven by the reduced diameter section 4 also increases. Thus, the centrifugal force borne by the multiple centrifugal frames 8 gradually increases. When the centrifugal force is sufficient to overcome the elastic force of the spring 15 and cause the spring 15 to stretch under force, the centrifugal frame 8 will rotate relative to the reduced diameter section 4, causing the friction surface 10 to approach the contact drive ring 11. When the two form contact and have a certain interaction force, under the action of the relative friction force between the two, the multiple synchronously rotating centrifugal frames 8 can achieve the purpose of driving the driven cylinder 5. In this state, the rotating reduced diameter section 4 can realize the rotation drive of the driven cylinder 5, thereby enabling the rotating main motor drive shaft 3 to realize the rotation drive of the internal drive gear 6. And under the mutual meshing action of the internal drive gear 6 and the internal driven gear 7, the rotating main motor drive shaft 3 realizes the rotation drive of the main oil pump 1.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compression gearbox main oil pump structure, comprising a main oil pump (1), characterized in that, It also includes a gearbox (2) and a main motor drive shaft (3). The main motor drive shaft (3) is rotatably connected inside the gearbox (2), and the right end of the main motor drive shaft (3) extends to the right side of the gearbox (2). A reduced diameter section (4) is provided on the main motor drive shaft (3). A driven cylinder (5) is rotatably connected to the reduced diameter section (4). A centrifugal contact drive assembly is installed on the reduced diameter section (4). The centrifugal contact drive assembly matches the driven cylinder (5). An internal drive gear (6) is installed on the driven cylinder (5). The internal drive gear (6) is positioned... Inside the gearbox (2), the main oil pump (1) is installed at the right end of the gearbox (2). The pump shaft of the main oil pump (1) extends into the inside of the gearbox (2). An internal driven gear (7) is installed on the pump shaft. The internal driven gear (7) is also located inside the gearbox (2). The internal driven gear (7) meshes with the internal drive gear (6). The centrifugal contact drive assembly includes multiple centrifugal frames (8). Multiple wedge-shaped grooves (9) are opened on the reduced diameter section (4). The multiple centrifugal frames (8) are rotatably connected to the multiple wedges. Inside the groove (9), multiple centrifuge racks (8) are connected to reset structures, and multiple reset structures are connected to the reduced diameter section (4). Multiple centrifuge racks (8) are provided with friction surfaces (10). The inner side of the driven cylinder (5) is provided with a contact drive ring (11) that matches the friction surface (10). Multiple reset structures include connecting parts (12). Multiple connecting parts (12) are respectively connected to multiple centrifuge racks (8). Multiple connecting parts (12) are connected with sliding columns (13). Multiple holes and slots (14) are opened on the reduced diameter section (4). Each of the multiple slots (14) is fixedly connected with an elastic spring (15), and each of the multiple elastic springs (15) is connected to a multiple of the multiple sliding columns (13). Each of the multiple connectors (12) is fixedly connected with a first connecting column (16) and a second connecting column (17). Each of the multiple centrifuge racks (8) is provided with a first guide bar hole (18) and a second guide bar hole (19). Each of the multiple first connecting columns (16) is connected to a multiple first guide bar hole (18), and each of the multiple second connecting columns (17) is connected to a multiple second guide bar hole (19).

2. The structure of a compression gearbox main oil pump according to claim 1, characterized in that, Each of the first connecting post (16) and the second connecting post (17) is rotatably connected to a guide bar bracket (20), and the multiple guide bar brackets (20) are slidably connected in multiple first guide bar holes (18) and multiple second guide bar holes (19).

3. The structure of a compression gearbox main oil pump according to claim 2, characterized in that, Both ends of the driven cylinder (5) are provided with annular grooves (21), and two connecting rings (22) are fixedly connected inside the main motor drive shaft (3). The two connecting rings (22) are respectively connected in the two annular grooves (21).

4. The structure of a main oil pump for a compression gearbox according to claim 3, characterized in that, Each of the multiple wedge-shaped grooves (9) is fixedly connected to a fixed shaft (23), and each of the multiple centrifugal frames (8) is rotatably connected to the multiple fixed shafts (23).

5. The structure of a compression gearbox main oil pump according to claim 4, characterized in that, The driven cylinder (5) is divided into two half-cylinder structures, and the two half-cylinder structures are fixedly assembled and connected by multiple connecting bolts (24).

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