Combined type gear box for herringbone tooth fracturing pump

Abstract

The utility model provides a combined type gear box for a herringbone tooth fracturing pump, which relates to the technical field of gear boxes and comprises a box body, a shaft sleeve is rotatably mounted between two sides of the inner wall of the box body through a first bearing, and a floating sun gear is rotatably mounted between two sides of the inner wall of the box body through a second bearing. A worker controls the shaft sleeve to rotate, so that the shaft sleeve drives the combined herringbone tooth input gear set to rotate by taking the first bearing as a reference, under the meshing action of the combined herringbone tooth input gear set and the combined herringbone tooth intermediate gear set, the floating sun gear drives the planet gear shaft to rotate, the floating sun gear is meshed with the planet gear, and the planet gear is driven to rotate. The planetary gear is meshed with the inner gear ring, so that power is transmitted to the planetary carrier, the output end of the planetary carrier is provided with the inner spline, so that the power can be output to the fracturing pump through the spline, large loads can be transmitted through meshing of the combined herringbone tooth input gear set and the combined herringbone tooth middle gear set, and therefore the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and more specifically, to a combined herringbone tooth fracturing pump gearbox. Background Technology

[0002] A fracturing pump gearbox is a gear transmission device specifically designed for fracturing pumps. It mainly consists of a housing and key components such as parallel input shafts, drive shafts, and planetary gear sets housed within the housing. Existing fracturing pump gearboxes use ordinary gear transmissions, which cannot transmit large loads and require relief grooves, resulting in a relatively loose structure and higher manufacturing costs, thus increasing production costs. Utility Model Content

[0003] The main objective of this invention is to provide a combined herringbone gear fracturing pump gearbox, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A combined herringbone tooth fracturing pump gearbox includes a housing, wherein a bushing is rotatably mounted between the two sides of the inner wall of the housing via a first bearing;

[0006] A floating sun gear is rotatably mounted between the two sides of the inner wall of the box via a second bearing. A planet carrier is provided at one end of the floating sun gear, and a planet gear shaft is provided on one side of the planet carrier. A planet gear is rotatably mounted on the shaft of the planet gear shaft via a third bearing.

[0007] An internal gear ring is provided inside the housing, and the planetary gear meshes with the internal gear ring.

[0008] Preferably, the outer wall of the bushing is provided with a combined herringbone tooth input gear set, and the outer wall of the floating sun gear is provided with a combined herringbone tooth intermediate gear set, the combined herringbone tooth input gear set meshing with the combined herringbone tooth intermediate gear set.

[0009] Preferably, one end of the bushing extends to the outside of the housing.

[0010] Preferably, a baffle is provided on one side of the box.

[0011] Preferably, a wire retaining ring is provided on the outer wall of the floating sun gear near the baffle.

[0012] Preferably, the planetary carrier is rotatably mounted inside the housing via planetary carrier bearings.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The operator controls the shaft sleeve to rotate, which drives the combined herringbone gear input gear set to rotate around the first bearing. Under the meshing action of the combined herringbone gear input gear set and the combined herringbone gear intermediate gear set, the floating sun gear drives the planet gear shaft to rotate. The internal gear ring is fixed to the housing. The floating sun gear meshes with the planet gear. The planet gear transmits power to the planet carrier by meshing with the internal gear ring. The output end of the planet carrier is equipped with an internal spline, so that the power can be output to the fracturing pump through the spline. The transmission is stable. Moreover, through the meshing of the combined herringbone gear input gear set and the combined herringbone gear intermediate gear set, a larger load can be transmitted, thereby reducing production costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a combined herringbone tooth fracturing pump according to the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of a combined herringbone tooth fracturing pump according to the present invention.

[0017] In the diagram: 1. Bushing; 2. First bearing; 3. Combined herringbone input gear set; 4. Combined herringbone intermediate gear set; 5. Second bearing; 6. Floating sun gear; 7. Wire retaining ring; 8. Baffle; 9. Third bearing; 10. Planetary gear; 11. Planetary gear shaft; 12. Internal gear ring; 13. Planetary carrier; 14. Planetary carrier bearing; 15. Housing. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figures 1-2 As shown, a combined herringbone tooth fracturing pump gearbox includes a housing 15, and a bushing 1 is rotatably mounted between the two sides of the inner wall of the housing 15 via a first bearing 2.

[0020] A floating sun gear 6 is rotatably mounted between the two sides of the inner wall of the housing 15 via a second bearing 5. A planet carrier 13 is provided at one end of the floating sun gear 6, and a planet gear shaft 11 is provided on one side of the planet carrier 13. A planet gear 10 is rotatably mounted on the shaft of the planet gear shaft 11 via a third bearing 9.

[0021] An internal gear ring 12 is provided inside the housing 15, and the planetary gear 10 meshes with the internal gear ring 12.

[0022] The outer wall of the bushing 1 is provided with a combined herringbone tooth input gear set 3, and the outer wall of the floating sun gear 6 is provided with a combined herringbone tooth intermediate gear set 4. The combined herringbone tooth input gear set 3 and the combined herringbone tooth intermediate gear set 4 mesh with each other.

[0023] The operator controls the rotation of the bushing 1, which drives the combined herringbone gear input gear set 3 to rotate around the first bearing 2. Under the meshing action of the combined herringbone gear input gear set 3 and the combined herringbone gear intermediate gear set 4, the floating sun gear 6 drives the planetary gear shaft 11 to rotate. The internal gear ring 12 is fixed to the housing 15. The floating sun gear 6 meshes with the planetary gear 10. The planetary gear 10 transmits power to the planet carrier 13 by meshing with the internal gear ring 12. The output end of the planet carrier 13 is provided with an internal spline, so that the power can be output to the fracturing pump through the spline. The transmission is stable, and through the meshing of the combined herringbone gear input gear set 3 and the combined herringbone gear intermediate gear set 4, a larger load can be transmitted, reducing production costs.

[0024] In another embodiment of this utility model, one end of the bushing 1 extends to the outside of the housing 15.

[0025] By extending one end of the bushing 1 to the outside of the housing 15, it is convenient for the staff to connect the bushing 1 to the power source.

[0026] In another embodiment of this utility model, a baffle 8 is provided on one side of the box 15.

[0027] A wire retaining ring 7 is provided on the outer wall of the floating sun gear 6 near the baffle 8.

[0028] The floating sun gear 6 is a floating component. It can be axially limited by using a wire retaining ring 7 and a baffle 8, which is simple to process and easier to install.

[0029] In another embodiment of this utility model, the planetary carrier 13 is rotatably mounted inside the housing 15 via the planetary carrier bearing 14.

[0030] By setting the planetary carrier bearing 14, the planetary carrier 13 can rotate stably, and the planetary carrier bearing 14 can also support the planetary carrier 13.

[0031] The working principle of a combined herringbone gear fracturing pump gearbox:

[0032] In use, the operator controls the shaft sleeve 1 to rotate, which drives the combined herringbone gear input gear set 3 to rotate around the first bearing 2. Under the meshing action of the combined herringbone gear input gear set 3 and the combined herringbone gear intermediate gear set 4, the floating sun gear 6 drives the planet gear shaft 11 to rotate. The internal gear ring 12 is fixed to the housing 15. The floating sun gear 6 meshes with the planet gear 10. The planet gear 10 transmits power to the planet carrier 13 by meshing with the internal gear ring 12. The output end of the planet carrier 13 is provided with an internal spline, so that the power can be output to the fracturing pump through the spline. The transmission is stable, and through the meshing of the combined herringbone gear input gear set 3 and the combined herringbone gear intermediate gear set 4, a larger load can be transmitted, reducing production costs.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A combined double helical fracturing pump gear box comprising a housing (15), characterized in that: The shaft sleeve (1) is rotatably installed between the two inner walls of the box (15) through the first bearing (2); The floating sun wheel (6) is rotatably installed between the two inner walls of the box (15) through the second bearing (5), one end of the floating sun wheel (6) is provided with the planet carrier (13), one side of the planet carrier (13) is provided with the planet wheel shaft (11), the shaft body of the planet wheel shaft (11) is rotatably installed with the planet gear (10) through the third bearing (9); The box (15) is provided with the inner ring gear (12), the planet gear (10) is engaged with the inner ring gear (12).

2. The combined double-helical gear fracturing pump gearbox according to claim 1, characterized in that: The outer wall of the shaft sleeve (1) is provided with the combined double helical input gear set (3), the outer wall of the floating sun wheel (6) is provided with the combined double helical intermediate gear set (4), the combined double helical input gear set (3) is engaged with the combined double helical intermediate gear set (4).

3. The combined double-helical gear fracturing pump gearbox according to claim 2, characterized in that: One end of the shaft sleeve (1) extends to the outside of the box (15).

4. The combined double-helical gear fracturing pump gearbox according to claim 3, characterized in that: One side of the box (15) is provided with the baffle (8).

5. The combined double herringbone fracturing pump gear box of claim 1, wherein: The outer wall of the floating sun wheel (6) is provided with the steel wire retaining ring (7) near one side of the baffle (8).

6. The combined double herringbone fracturing pump gear box of claim 1, wherein: The planet carrier (13) is rotatably installed in the box (15) through the planet carrier bearing (14).

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