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CN-224222671-U - Gear box casting structure and gear box

CN224222671UCN 224222671 UCN224222671 UCN 224222671UCN-224222671-U

Abstract

The utility model discloses a gearbox casting structure and a gearbox, which comprise a box body and a box cover, wherein the box body and the box cover are independent casting pieces and are covered to form a containing cavity, the containing cavity comprises a first cavity and a second cavity, first shaft holes are symmetrically formed in two side walls of the first cavity, second shaft holes are symmetrically formed in two side walls of the second cavity, and the center distance between the first shaft holes and the second shaft holes is adjustable. According to the utility model, the first shaft hole and the second shaft hole are respectively formed in the corresponding positions of the first cavity and the second cavity, the universal production of gear box castings is realized through a modularized casting process and the design of adjustable center distance of the same casting shaft hole, the requirements of different models of the serialization unit can be adapted only by adjusting the positions and the sizes of the shaft holes through mechanical processing, the development types and the processing procedures of the mold are reduced, the production period is obviously shortened, the manufacturing cost is reduced, the assembly error and the deformation are reduced, and the production efficiency and the quality of the unit are improved.

Inventors

  • CUI YONG
  • WANG YI
  • NIU DAYONG
  • LIU XIAOMING
  • WANG GE
  • Bing Xiaoshi
  • REN HAO
  • LU SHUYUAN

Assignees

  • 沈阳鼓风机集团齿轮压缩机有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (10)

  1. 1. The utility model provides a gear box casting structure, its characterized in that, includes box (2) and case lid (1), box (2) with case lid (1) are independent casting and cover and form and hold the cavity after closing, hold the cavity including first cavity (100) and second cavity (200), first shaft hole (310) are offered to symmetry on the both sides wall of first cavity (100), second shaft hole (320) are offered to symmetry on the both sides wall of second cavity (200), first shaft hole (310) with the centre-to-centre spacing of second shaft hole (320) is adjustable.
  2. 2. The gearbox casting structure according to claim 1, wherein the cross section of the first chamber (100) and the second chamber (200) is kidney-shaped, and the long axis direction of the first chamber (100) and the second chamber (200) is perpendicular to the axis of the driving shaft (3).
  3. 3. The gearbox casting structure of claim 2, wherein the first chamber (100) and the second chamber (200) each comprise two symmetrical semicircular ends and a parallel extending straight connecting section, both ends of the straight connecting section being tangentially connected to the diametrical edges of the two semicircular ends, respectively.
  4. 4. A gearbox casting structure according to claim 3, wherein the gearbox casting structure fabrication material comprises ductile iron.
  5. 5. The gearbox casting structure of claim 2, wherein the case cover (1) comprises a first half cavity (110) and a third half cavity (210), the case (2) comprises a second half cavity (120) and a fourth half cavity (220), the first chamber (100) comprises the first half cavity (110) and the second half cavity (120), and the second chamber (200) comprises the third half cavity (210) and the fourth half cavity (220).
  6. 6. The gearbox casting structure according to claim 2, wherein third shaft holes (330) corresponding to the driving shaft (3) are symmetrically formed on two side walls of the accommodating chamber, and an axis of the third shaft holes (330) is located between the first chamber (100) and the second chamber (200) and parallel to an axis of the first shaft holes (310) and the second shaft holes (320).
  7. 7. The gearbox casting structure of claim 6, wherein the gear box casting structure comprises a gear box casting structure, Along the long axis direction of the first chamber (100) and the second chamber (200), the minimum distance between the axis of the first shaft hole (310) and the axis of the third shaft hole (330) is A, and the maximum distance between the axis of the first shaft hole (310) and the axis of the third shaft hole (330) is A+Deltaa, wherein, 1<A +Deltaa is A less than or equal to 1.14; Along the long axis direction of the first chamber (100) and the second chamber (200), the minimum distance between the axis of the second shaft hole (320) and the axis of the third shaft hole (330) is B, and the maximum distance between the axis of the second shaft hole (320) and the axis of the third shaft hole (330) is B+Deltab, wherein 1<B +Deltab is less than or equal to 1.15.
  8. 8. A gearbox comprising a gearbox casting structure according to any one of claims 1 to 7.
  9. 9. The gearbox as recited in claim 8, comprising: The driving shaft (3), the driving shaft (3) is arranged in the third shaft hole (330), and the driving shaft (3) is provided with a driving gear (31); The first driven shaft (4), the first driven shaft (4) is arranged in a first shaft hole (310), a first driven gear (41) positioned in the first cavity (100) is arranged on the first driven shaft (4), and the driving gear (31) is meshed with the first driven gear (41); The second driven shaft (5), second driven shaft (5) set up in second shaft hole (320), be equipped with on second driven shaft (5) and be located second driven gear (51) of second cavity (200), driving gear (31) with second driven gear (51) meshing.
  10. 10. Gearbox according to claim 9, characterized in that the box (2) comprises several lubrication channels (6), several lubrication channels (6) extending to the first shaft hole (310), the second shaft hole (320) and the third shaft hole (330), respectively.

Description

Gear box casting structure and gear box Technical Field The utility model relates to the technical field of gearboxes, in particular to a gearbox casting structure and a gearbox. Background The performance of the multi-shaft cantilever impeller type centrifugal compressor as a core component of high-rotation-speed power equipment directly depends on the reliability and efficiency of a parallel-shaft gear box, the gear box is required to provide accurate speed increasing and power transmission functions for a high-speed rotor, and the traditional manufacturing mode is mainly divided into two types, namely welding type and casting type. However, the welded gear box needs to undergo multiple processes, and has long production period, high cost and large limitation. Although the casting technology can reduce the processing links through integrated forming, the traditional casting gear box is difficult to adapt to the diversified requirements of the multi-shaft cantilever compressor due to non-standardized design. Meanwhile, the casting process needs high mould investment in the initial stage, the existing casting process cannot balance the contradiction between the customized demand and the large-scale production, and the utility model provides a new solution to the problems. Disclosure of utility model The present utility model is directed to overcoming at least one of the above-mentioned drawbacks by providing a gearbox casting structure and a gearbox. The aim of the utility model can be achieved by adopting the following technical scheme: The application provides a gearbox casting structure, which comprises a box body and a box cover, wherein the box body and the box cover are independent casting pieces and are covered to form a containing cavity, the containing cavity comprises a first cavity and a second cavity, first shaft holes are symmetrically formed in two side walls of the first cavity, second shaft holes are symmetrically formed in two side walls of the second cavity, and the center distance between the first shaft holes and the second shaft holes is adjustable. In one embodiment, the cross sections of the first chamber and the second chamber are waist-shaped, and the long axis directions of the first chamber and the second chamber are perpendicular to the axis of the driving shaft. In one embodiment, the first chamber and the second chamber each comprise two symmetrical semicircular ends and a parallel linear connecting section, and two ends of the linear connecting section are respectively connected with the diameter edges of the two semicircular ends in a tangent way. In one embodiment, the gearbox cast construction material comprises ductile iron. In one embodiment, the case cover includes a first half cavity and a third half cavity, the case includes a second half cavity and a fourth half cavity, the first chamber includes the first half cavity and the second half cavity, and the second chamber includes the third half cavity and the fourth half cavity. In one embodiment, the two side walls of the accommodating chamber are symmetrically provided with third shaft holes corresponding to the driving shaft, and the axes of the third shaft holes are positioned between the first chamber and the second chamber and parallel to the axes of the first shaft holes and the second shaft holes. In one embodiment, the minimum distance between the first shaft hole axis and the third shaft hole axis along the long axis direction of the first chamber and the second chamber is A, and the maximum distance between the first shaft hole axis and the third shaft hole axis is A+Deltaa, wherein 1<A +Deltaa is less than or equal to 1.14; and in the long axis direction of the first chamber and the second chamber, the minimum distance between the axis of the second shaft hole and the axis of the third shaft hole is B, and the maximum distance between the axis of the second shaft hole and the axis of the third shaft hole is B+Deltab, wherein B is less than or equal to 1.15. In a second aspect of the application there is provided a gearbox comprising the gearbox casting structure of any of the first aspects. In one possible embodiment, the gearbox comprises: the driving shaft is arranged in the third shaft hole, and a driving gear is arranged on the driving shaft; The first driven shaft is arranged in the first shaft hole, a first driven gear positioned in the first cavity is arranged on the first driven shaft, and the driving gear is meshed with the first driven gear; The second driven shaft is arranged in the second shaft hole, a second driven gear positioned in the second cavity is arranged on the second driven shaft, and the driving gear is meshed with the second driven gear. In one embodiment, the case includes a plurality of lubrication oil passages extending to the first shaft hole, the second shaft hole, and the third shaft hole, respectively. According to the utility model, the gearbox casting structure and the gearbo