CN201326698Y

CN201326698Y - Hoist gearbox of petroleum drilling machine

Info

Publication number: CN201326698Y
Application number: CNU2008202149152U
Authority: CN
Inventors: 曾书生; 万方辉; 吴建中; 董建强; 曹启亮; 贺春; 王礼芳
Original assignee: NANJING GAOTE GEAR BOX MANUFACTURING Co Ltd
Current assignee: NANJING GAOTE GEAR BOX MANUFACTURING Co Ltd
Priority date: 2008-12-25
Filing date: 2008-12-25
Publication date: 2009-10-14
Anticipated expiration: 2018-12-25

Abstract

The utility model relates to a hoist gearbox of a petroleum drilling machine, which comprises a box body. An input shaft, an output shaft and a middle gear shaft which are parallel are supported by bearings in the box body, and the input shaft and the output shaft are stretched out of the box body; wherein the input shaft is a spline shaft, a large spline gear and a small spline gear are supported by the bearings on the input shaft, a spline is arranged on the shaft between the two spline gears, and a spline sleeve is matched on the spline; a small decelerating driving gear and a large decelerating driving gear which are meshed with the large spline gear and the small spline gear are respectively arranged at the two sides of a gear of the middle gear shaft, the two driving gears are fixedly connected with the middle gear shaft by keys, the gear of the middle gear shaft is meshed with an output large gear on the output shaft, and the output large gear is fixedly connected with the output shaft by the key. The hoist gearbox has the advantages that: as a speed regulating mechanism is arranged on the input shaft, the volume of the large and small spline gears is relatively small, and the processing is convenient; as the spline in the speed regulating mechanism can be directly processed on the input shaft, the installation procedures are more simplified; meanwhile, the gearbox has compact structure and small volume.

Description

The petroleum drilling machine winch gear-box

Technical field

The utility model relates to a kind of hoist gear, in particular for the hoist gear that contains gearshift mechanism of oil-well rig.

Background technique

At present, the gear changing mode that is used for the hoist gear of oil-well rig all is provided in a side of intermediate gear shaft, it mainly is to fixedly install a spline on intermediate gear shaft by key, big spline gear 1, little spline gear 4 in the spline both sides are supported on the intermediate gear shaft 9 by bearing 11, big spline gear 1, little spline gear 4 respectively with input shaft 8 on small drive gear 5 and big actuation gear 6, be furnished with the spline housing of stirring by shift fork 32 (referring to Fig. 1) on the spline.In the work, when spline housing did not mesh with large and small spline gear, input shaft just drove large and small spline gear idle running simultaneously; When speed governing, stir shift fork, make one in spline on the intermediate gear shaft and the large and small spline gear to rotate synchronously by spline housing, little spline gear drives, intermediate gear shaft drives the gearwheel on the output shaft, because large and small spline gear is different with the speed ratio little, gearwheel on the input shaft, select different spline gears by shift fork, will obtain different rotating speeds on the output shaft.

Because speed regulating mechanism is located on the intermediate gear shaft, large and small spline gear all is the driven gear that slows down, and relative volume is bigger; Spline in the speed regulating mechanism on the intermediate gear shaft can only be processed separately, and by key location, installation and processing complex procedures.

Summary of the invention

The purpose of this utility model is: be located at speed regulating mechanism in traditional hoist gear that contains gearshift mechanism and exist on the intermediate gear shaft, the big spline of large and small spline gear relative volume needs processing separately to be located by key, the practical problem of installation and processing complex procedures provides a kind of new petroleum drilling machine winch gear-box.

The purpose of this utility model is achieved in that a kind of petroleum drilling machine winch gear-box, comprises casing, on the casing by bearings parallel input shaft, output shaft and intermediate gear shaft, input shaft and output shaft stretch out casing, it is characterized in that:

A) input shaft is a splined shaft, on the input shaft by bearings large and small spline gear, the axle between the large and small spline gear is gone up and to be spline, is furnished with the spline housing of stirring by shift fork on the spline;

B) the gear both sides of intermediate gear shaft are respectively equipped with little, the big actuation gear of deceleration that meshes with large and small spline gear, and described little, big actuation gear is all fixedlyed connected with intermediate gear shaft by key;

C) gear of intermediate gear shaft and the output gearwheel on output shaft engagement, described output gearwheel is fixedlyed connected with output shaft by key.

Advantage of the present utility model is: because speed regulating mechanism is located on the input shaft, the volume of large and small spline gear is less relatively, and is easy to process; Spline in the speed regulating mechanism can directly be processed on input shaft, and installation procedure is more succinct; Compact structure, the volume ratio of gear-box are less.

Description of drawings

Fig. 1 is traditional hoist gear structural representation;

Fig. 2 is the utility model embodiment's a structural representation.

Among the figure: 1, big spline gear, 2, spline housing, 3, shift fork, 4, little spline gear, 5, the deceleration small drive gear, 6, the big actuation gear that slows down, 7, the output gearwheel, 8, input shaft, 9, intermediate gear shaft, 10, output shaft, 11, bearing, 12, casing.

Embodiment

Fig. 2 discloses the utility model embodiment's concrete structure without limitation, below in conjunction with accompanying drawing the utility model is further described.

As seen from Figure 2, casing 12, by bearings parallel input shaft 8, output shaft 10 and intermediate gear shaft 9, input shaft 8 and output shaft 10 stretch out casing 12, wherein: supported big spline gear 1 and little spline gear 4 by bearing 11 on the input shaft 8, axle between the large and small spline gear is gone up to spline, is furnished with the spline housing of stirring by shift fork 3 on the spline; The gear both sides of intermediate gear shaft 9 are respectively equipped with and the deceleration small drive gear 5 of large and small spline gear engagement and the big actuation gear 6 that slows down, and deceleration small drive gear 5 is all fixedlyed connected with intermediate gear shaft 9 by key with the big actuation gear 6 that slows down; Output gearwheel 7 engagements on the gear of intermediate gear shaft 9 and the output shaft 10, described output gearwheel 7 is fixedlyed connected with output shaft 10 by key.

Usage mode and traditional hoist gear are basic identical.In the work, when spline housing 2 does not mesh with large and small spline gear, input shaft idle running, when speed governing, stir shift fork 3, make one in spline on the input shaft and the large and small spline gear to rotate synchronously by spline housing 2, this spline gear drives the actuation gear of engagement in intermediate gear shaft 9, intermediate gear shaft 9 these actuation gears are rotated synchronously, and drive output shaft 10 by output gearwheel 7.Since on large and small spline gear and the intermediate gear shaft 9 engagement speed ratio little, big actuation gear different, by the different spline gear of shift fork selection, will obtain different rotating speeds on the output shaft.

Claims

1, a kind of petroleum drilling machine winch gear-box comprises casing, in the casing by bearings parallel input shaft, output shaft and intermediate gear shaft, input shaft and output shaft stretch out casing, it is characterized in that: