Slurry pump pinion shaft

Abstract

The utility model discloses a slurry pump pinion shaft which comprises a pinion shaft body, and gear teeth and a pinion shaft support are arranged on the pinion shaft body. One end or two ends of the pinion shaft body are provided with power connecting ends, and the power connecting ends are provided with connecting structures which are directly connected and matched with a reduction gearbox. The slurry pump pinion shaft provides a new connection mode for the slurry pump and the reduction gearbox, and solves the problems that a traditional slurry pump transmission system is low in efficiency and cannot adapt to the high-load working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of mud pumps in drilling construction. More specifically, the utility model relates to a pinion shaft of a mud pump. Background Technique

[0002] In recent years, continuous breakthroughs have been made in the development of deep shale oil and gas. The requirements for drilling pressure and displacement have increased, posing higher demands on the adaptability and reliability of mud pumps.

[0003] Traditional mud pumps mostly use motors to transmit power to the pinion shaft of the mud pump through belt drive or chain drive. The transmission efficiency of belts and chains is low, and in high-load working conditions, belt slipping and breaking are likely to occur, making it impossible to adapt to the current development trend of high-power and high-load mud pumps. The pinion shaft is one of the most critical transmission components of the mud pump. By changing the structure of the pinion shaft, it is convenient to directly connect the pinion shaft to the reduction box, enabling a new transmission method to be applied to the mud pump, improving the transmission efficiency and the load-bearing capacity of the mud pump, which is of great significance. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pinion shaft of a mud pump, which provides a new connection method between the mud pump and the reduction box, and solves the problems of low efficiency of the traditional mud pump transmission system and inability to adapt to high-load working conditions.

[0005] The technical solution adopted by the utility model to solve this technical problem is: a pinion shaft of a mud pump, including a pinion shaft body, on which teeth and a pinion shaft support are provided; one end or both ends of the pinion shaft body have power connection ends, and connection structures directly connected and matched with the reduction box are provided at the power connection ends.

[0006] As a further scheme of the utility model: the teeth are coaxially arranged on the pinion shaft body, and the teeth are herringbone teeth, helical teeth or straight teeth.

[0007] As a further scheme of the utility model: the pinion shaft support is a cylindrical surface structure coaxial with the central axis of the pinion shaft body.

[0008] As a further scheme of the utility model: the power connection end is an external drum-shaped tooth or external involute spline or external rectangular spline structure integrated with the pinion shaft body.

[0009] As a further scheme of the utility model: the power connection end is an internal drum-shaped tooth or internal involute spline or internal rectangular spline structure integrated with the pinion shaft body.

[0010] As a further solution of the present utility model: the power connection end is a connecting flange, which is installed at the end of the pinion shaft body through bolts and positioning pins.

[0011] As a further solution of the present utility model: the connecting flange includes a connecting spline, a positioning stop, bolt holes and positioning pin holes.

[0012] As a further solution of the present utility model: the connecting spline is one of an internal spline, an external spline, a crowned spline, an involute spline or a rectangular spline.

[0013] The present utility model has at least the following beneficial effects: the power connection end of the mud pump pinion shaft is provided with a connection structure (crowned spline, involute spline, rectangular spline, spline flange) for cooperating with the reduction gearbox, which is used to connect with the output end of the reduction gearbox, receive and transmit the output torque of the reduction gearbox; the teeth on the pinion shaft mesh with the teeth on the large wheel of the mud pump crankshaft to transmit the torque to the mud pump crankshaft, thereby driving the mud pump to operate; the pinion shaft support is used to cooperate with the assembly of rolling bearings and is installed in the bearing seat hole of the mud pump frame to support the pinion shaft.

[0014] This new type of mud pump pinion shaft can be directly connected to the reduction gearbox, which can improve the transmission efficiency and adapt to high-load working conditions compared with traditional mud pumps, and can adapt to the current development trend of high-power and high-load mud pumps.

[0015] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is one of the embodiments provided by the present utility model;

[0017] Figure 2 is the second embodiment provided by the present utility model;

[0018] Figure 3 is a schematic diagram of the power connection end structure of the third embodiment provided by the present utility model;

[0019] Figure 4 is one of the connection flange structure diagrams provided by the present utility model;

[0020] Figure 5 is the second connection flange structure diagram provided by the present utility model.

[0021] Wherein, 1 - power connection end; 1-1 - connecting flange; 1-1-1 - connecting spline; 1-1-2 - positioning stop; 1-1-3 - bolt hole; 1-1-4 - positioning pin hole; 1-2 - connecting bolt; 1-3 - positioning pin; 2 - teeth; 3 - pinion shaft support. Detailed implementation manners

[0022] The present utility model will be described in detail and completely with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present utility model based on these descriptions. Before describing the present utility model with reference to the accompanying drawings, it should be particularly noted that: the technical solutions and technical features provided in each part including the following descriptions of the present utility model can be combined with each other without conflict.

[0023] In addition, the embodiments of the present utility model involved in the following descriptions are usually only part of the embodiments of the present utility model, rather than all of the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] The following further detailed description of the present utility model is made with reference to the accompanying drawings and embodiments, and the specific implementation process is as follows:

[0025] The present utility model provides a pinion shaft of a mud pump, which includes a pinion shaft body. Gear teeth 2 and a pinion shaft support 3 are arranged on the pinion shaft body; one end or both ends of the pinion shaft body have a power connection end 1, and a connection structure for directly connecting and cooperating with a reduction box is provided at the power connection end. A connection structure (crowned teeth, involute spline, rectangular spline, spline flange) for cooperating with the output end of the reduction box is provided at the power connection end of the pinion shaft of the mud pump, which is used to connect with the output end of the reduction box, receive and transmit the output torque of the reduction box; the gear teeth on the pinion shaft are meshed with the large gear teeth on the crankshaft of the mud pump to transmit the torque to the crankshaft of the mud pump, thereby driving the operation of the mud pump; the pinion shaft support is a cylindrical surface structure coaxial with the central axis of the pinion shaft, which is used to transmit the supporting force provided by the bearing seat of the mud pump frame for the pinion shaft after installing a rolling bearing.

[0026] Figure 1 A specific implementation manner is provided. The pinion shaft includes 1 pinion shaft body, 1 power connection end 1, gear teeth 2, and a pinion shaft support 3. The power connection end 1 is integrally formed with the pinion shaft body. The specific connection structure of the power connection end 1 is an external involute spline, and the power connection end can also be an external crowned tooth or an external rectangular spline.

[0027] Figure 2 A second specific implementation manner is provided. Compared with the first implementation manner, its special feature lies in that the specific connection structure of the power connection end 1 is an internal involute spline. The power connection end can also be an internal crowned tooth or an internal rectangular spline.

[0028] Figure 3A third implementation manner is provided. Compared with the first implementation manner and the second implementation manner, its special feature is that the power connection end is a connecting flange 1-1, which is a split structure with the pinion shaft body. The connecting flange 1-1 is installed at the end of the pinion shaft body through bolts 1-1-2 and positioning pins 1-1-3, and a connecting spline 1-1-1 is provided on the connecting flange 1-1.

[0029] Figure 4 A fourth implementation manner is provided. Compared with the third implementation manner, the structure of the connecting flange is refined, including a connecting spline 1-1-1, a positioning stop 1-1-2, bolt holes 1-1-3, and positioning pin holes 1-1-4. The connecting flange positioning stop 1-1-2 is used to cooperate with the positioning stop on the pinion shaft body. The bolt holes 1-1-3 are used to install the connecting flange 1-1 on the pinion shaft body through bolts 1-2, and the positioning pin holes 1-1-4 are used to install the positioning pin 1-3. Note: The connecting flange 1-1-1 can be an internal drum-shaped tooth or an internal involute spline or an internal rectangular spline.

[0030] Figure 5 A fifth implementation manner is provided. Compared with the fourth implementation manner, its special feature is that the connecting spline 1-1-1 of the connecting flange 1-1 is an external spline, which can be an external drum-shaped tooth or an external involute spline or an external rectangular spline.

[0031] Although the implementation schemes of the present utility model have been disclosed as above, they are not limited to the applications listed in the specification and implementation manners. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A mud pump pinion shaft, comprising a pinion shaft body, characterized in that, The small gear shaft body is provided with gear teeth and a small gear shaft support; one end or both ends of the small gear shaft body have power connection ends, and the power connection ends are provided with connection structures directly connected and matched with the reduction gearbox.

2. The pinion shaft of the mud pump according to claim 1, characterized in that, The gear teeth are coaxially arranged on the small gear shaft body, and the gear teeth are herringbone teeth, helical teeth or straight teeth.

3. The mud pump pinion shaft according to claim 1, characterized in that, The small gear shaft support is a cylindrical surface structure coaxial with the central axis of the small gear shaft body.

4. The pinion shaft of the mud pump according to claim 1, characterized in that, The power connection end is an outer drum-shaped tooth or an outer involute spline or an outer rectangular spline structure integrated with the small gear shaft body.

5. The pinion shaft of the mud pump according to claim 1, characterized in that, The power connection end is an inner drum-shaped tooth or an inner involute spline or an inner rectangular spline structure integrated with the small gear shaft body.

6. The pinion shaft of the mud pump according to claim 1, wherein The power connection end is a connecting flange, which is installed at the end of the small gear shaft body through bolts and positioning pins.

7. The pinion shaft of the mud pump according to claim 6, characterized in that The connecting flange includes a connecting spline, a positioning stop, bolt holes and positioning pin holes.

8. The mud pump pinion shaft according to claim 7, characterized in that, The connecting spline is one of an internal spline, an external spline, a drum-shaped tooth, an involute spline or a rectangular spline.

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