CN110701200A - A displacement compensation type integral drum gear coupling - Google Patents

Abstract

The invention discloses a displacement compensation type integral drum-shaped tooth coupling, which comprises an inner gear ring, the inner side wall of the inner gear ring is provided with inner drum teeth, and the inner side wall of the inner gear ring is sleeved with a first outer gear sleeve and the second outer gear sleeve, the first outer gear sleeve and the second outer gear sleeve are meshed and connected with the inner gear ring, and the two ends of the inner gear ring are respectively arranged with pressure The compression assembly fixes the first outer gear sleeve and the second outer gear sleeve to the inner gear ring in a detachable manner through the end cover assembly; the displacement compensation type integral drum gear coupling of the present invention reduces the The difficulty of installation and maintenance improves the accuracy of installation and reduces the difficulty of processing.

Description

A displacement compensation type integral drum gear coupling

technical field

The invention belongs to the technical field of oil drilling equipment, and particularly relates to a displacement compensation type integral drum-shaped tooth coupling.

Background technique

With the rapid development of oil exploration equipment development and the increasing development of oil drilling rigs and core supporting equipment, the design requirements for couplings, the most frequently used general components in mechanical equipment transmission shafting, are getting higher and higher. There are two main types of couplings: rigid couplings and flexible couplings. Rigid couplings do not have the ability to compensate for the relative offset of the axes of the two coupled shafts, nor do they have buffering and shock absorption properties. The flexible coupling has a certain ability to compensate for displacement, and the amount of compensation can vary with different models. Generally, the couplings that meet this requirement include cross-type universal couplings and high-torque drum tooth couplings.

As an improvement, the torque of the cross coupling can reach the allowable range, but the bearing impact performance is poor, and this coupling allows a large angle between the two shafts. When the shaft is running, the angle If the change occurs, the transmission can still be normal. When the included angle is too large, the transmission efficiency will be significantly reduced. And this type of coupling has a short life.

As an improvement, the angular compensation of the drum gear coupling is greater than that of the straight gear coupling. The drum gear coupling is widely used at home and abroad, but the inner gear of the drum gear coupling is currently more commonly used The tooth sleeve is generally two-lobed type, and the shear stress is transmitted through the flange connection of the reamed bolt, so the strength of the reamed bolt is required to be high. At the same time, the accuracy of the coaxiality of the drum gear coupling has an important influence on the operation, vibration, noise and service life of the reducer and power end, especially the service life of the coupling itself. In the process of processing and installation, it is required to ensure its processing and installation accuracy. The two-lobed coupling needs to be installed and then prepared with reamed holes, which requires high installation and processing capabilities. In order to prolong the service life of the coupling, improve the working performance of the transmission shaft, and reduce the difficulty of assembly, it is of great significance to study an integral coupling with large bearing capacity, simple structure, small radial size and low installation difficulty. To sum up, the current coupling has the problems of high requirements on the strength of reaming bolts, high requirements on installation and on-site processing.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a displacement-compensated integral drum-shaped tooth coupling, which solves the problems that the current coupling has high requirements on the strength of reaming bolts, and high requirements for installation and on-site processing.

The technical scheme adopted in the present invention is,

A displacement compensation type integral drum-shaped tooth coupling includes an inner gear ring, the inner side wall of the inner gear ring is provided with inner drum teeth, and the inner side wall of the inner gear ring is respectively sleeved with a first outer gear sleeve and a second outer gear sleeve. The outer gear sleeve, the first outer gear sleeve and the second outer gear sleeve are meshed and connected with the inner gear ring, and two ends of the inner gear ring are respectively provided with pressing components along the circumferential direction of the first outer gear sleeve and the second outer gear sleeve, The pressing assembly fixes the first outer gear sleeve and the second outer gear sleeve to the inner gear ring in a detachable manner through the end cover assembly.

The ring gear is an integral structure.

A compression bolt is arranged between the compression assembly and the end cover assembly and the inner gear ring, and the compression bolt is used to compress the first outer gear sleeve and the second outer gear sleeve to the inner gear sleeve through the compression assembly and the end cover assembly .

The pressing assembly includes a first pressing cap and a second pressing cap, the end cap assembly comprises a first end cap and a second end cap, the first pressing cap, the second pressing cap, the first end cap and the second end cap and the inner teeth The rings are connected by compression bolts.

A sealing ring is arranged between the first end cap and the second end cap.

The side wall of the inner gear sleeve is provided with a lubricating oil nipple.

Both the first outer gear sleeve and the second outer gear sleeve are provided with tooling holes.

Drum-shaped teeth or straight teeth are arranged on both sides of the inner wall of the inner gear sleeve.

The outer walls of the first outer tooth sleeve and the second outer tooth sleeve are provided with drum teeth or straight teeth

The beneficial effects of the present invention are as follows: the displacement compensation type integral drum gear coupling of the present invention has radial, axial and angular equiaxed axis deviation compensation capabilities, has lower requirements on the strength of reaming bolts, has a compact structure, and can be rotated Small radius, large bearing capacity, stable transmission, high transmission efficiency, and convenient disassembly and assembly. Especially suitable for shafting transmission of various types of machinery such as petroleum, chemical industry, general machinery, etc., mainly reflected in:

(1) The present invention has radial, axial and angular equiaxed axis deviation compensation capabilities, meets the use requirements of shafting transmission that can generate displacement, and does not need to move the connecting shaft when replacing the wearing parts, and the centering adjustment is easy, Reduce the difficulty of installation and maintenance.

(2) The present invention uses bolts for compression limiting, and the bolts do not bear shear stress, thereby reducing the strength requirements and installation accuracy requirements for the reaming bolts.

(3) The inner gear ring of the present invention is integral, and does not need to prepare reaming holes, reaming bolts and connecting flanges, which reduces the difficulty of processing. The radius of gyration is small, the volume is small, the moment of inertia is small, and the overall size and weight are smaller than the recommended values of industry standards. It meets the design needs of simple and compact structure of oil drilling equipment.

Description of drawings

1 is a schematic front view of a displacement compensation type integral drum-shaped tooth coupling of the present invention;

Fig. 2 is the assembly schematic diagram of a displacement compensation type integral drum tooth coupling of the present invention;

Fig. 3 is the A-A sectional schematic diagram of a displacement compensation type integral drum tooth coupling of the present invention;

FIG. 4 is a schematic diagram of disassembly and assembly of a displacement compensation type integral drum tooth coupling according to the present invention.

In the figure, 1. inner gear ring, 2. first outer gear sleeve, 3. second outer gear sleeve, 4. first gland, 5. first end cap, 6. second end cap, 7. second pressure Cover, 8. Compression bolt, 9. Lubricating oil nipple, 10. Sealing ring.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

A displacement compensation type integral drum-shaped tooth coupling includes an inner gear ring 1, the inner side wall of the inner gear ring 1 is provided with inner drum teeth, and the inner side walls of the inner gear ring 1 near both ends are respectively sleeved with a first outer ring gear. The tooth sleeve 2 and the second outer tooth sleeve 3, the first outer tooth sleeve 2 and the second outer tooth sleeve are meshed and connected with the inner gear ring 1, and the two ends of the inner gear ring 1 are along the first outer tooth sleeve 2 and the second outer tooth sleeve. The sleeves 3 are respectively provided with compression assemblies in the circumferential direction, and the compression assemblies fix the first outer tooth sleeve 2 and the second outer tooth sleeve 3 to the inner gear ring 1 in a detachable manner through the end cover assembly.

Further, the ring gear 1 is an integral structure.

The inner gear ring 1 in the displacement compensation type integral drum gear coupling of the present invention is set as an integral type, and there is no need to prepare reaming holes, reaming bolts and connecting flanges, which reduces the difficulty of processing

Further, a compression bolt 8 is arranged between the compression assembly and the end cover assembly and the inner gear 1, and the compression bolt 8 is used for connecting the first outer gear sleeve 2 and the second outer tooth through the compression assembly and the end cover assembly. The sleeve 3 is pressed against the inner gear sleeve 1.

In a displacement compensation type integral drum-shaped tooth coupling of the present invention, the pressing bolt 8 is used for pressing and limiting. The strength requirements and installation accuracy requirements of the hole bolts.

Further, the pressing assembly includes a first pressing cap 4 and a second pressing cap 7, the end cap assembly includes a first end cap 5 and a second end cap 6, the first pressing cap 4, the second pressing cap 7, the first end cap The cover 5 and the second end cover 6 are connected with the ring gear 1 by pressing bolts 8 .

The displacement compensation type integral drum-shaped tooth coupling of the present invention adopts an end cover group and a pressure cover group, which further stabilizes the coupling.

Further, a sealing ring 10 is arranged between the first end cover 5 and the second end cover 6 .

A displacement compensation type integral drum gear coupling of the present invention is provided with a sealing ring 10, which can further improve the precision of the coupling.

Further, the side wall of the first outer gear sleeve 2 is provided with a lubricating oil nipple 9 .

A displacement compensation type integral drum gear coupling of the present invention is provided with a lubricating oil nipple 9, through which lubricating oil or grease is added to lubricate, and two sealing rings 10 are used for sealing, thereby reducing oil leakage phenomenon, to achieve the effect of green environmental protection.

Further, both the first outer gear sleeve 2 and the second outer gear sleeve 3 are provided with tooling holes.

The displacement compensation type integral drum-shaped tooth coupling of the present invention is provided with a plurality of tooling holes, which facilitates the disassembly and assembly of the device and improves the disassembly and assembly efficiency.

The outer walls of the first outer tooth sleeve 2 and the second outer tooth sleeve 3 are both provided with drum-shaped teeth or straight teeth.

A displacement compensation type integral drum-shaped tooth coupling of the present invention is provided with drum-shaped teeth, and the torque transmission function of the coupling is optimized through the meshing between the drum-shaped teeth. When the two axes have no angular displacement, The coupling has the function of radial compensation. When the two axes have no radial displacement, the axis of the external gear sleeve has the function of angular compensation.

The working principle of a displacement compensation type integral drum gear coupling of the present invention is as follows:

Referring to Figure 1, the coupling and the shaft are connected by keys such as splines or flat keys. The spline connection can reduce the axial length of the coupling, while the flat key connection is less difficult to process and can reduce processing costs. Also applies to other key connections.

Referring to FIG. 2 , the inner gear 1 is engaged with the first outer gear sleeve 2 and the second outer gear sleeve 3 to transmit torque through the meshing of the inner and outer teeth, and through the teeth of the first outer gear sleeve 2 and the second outer gear sleeve 3 The axis of the ring swings to compensate for the relative displacement of the two-phase transmission axes. The bulge in the length direction of the drum teeth is proportional to the angular displacement. The greater the bulge, the greater the compensation displacement. The outer teeth are spherical, the center of the spherical surface is on the axis of the gear, and the side clearance is large. The drum-shaped tooth coupling allows a larger angular displacement. By improving the contact conditions of the drum-shaped teeth, it improves the ability to transmit torque and prolong the use. life. The two ends are respectively pressed by pressing bolts 8 through the first end cover 5 and the first pressing cover 4 , the second end cover 6 and the second pressing cover 7 . The first outer tooth sleeve 2 and the second outer tooth sleeve 3 can be drum teeth or straight teeth.

Referring to FIG. 3 , lubricating oil or grease is added through the lubricating oil nozzle 9 for lubrication, and two sealing rings 10 are used for sealing, so as to avoid oil leakage and achieve green environmental protection.

Referring to Figure 4, during disassembly and maintenance, the inner gear 1 is moved to the left, and the right compression bolt 8 is loosened to disengage the second end cover 6, the second gland 7 and the sealing ring 10, and then the inner The ring gear 1 moves to the left until the inner ring gear 1 is disengaged from the second outer gear sleeve 3, and vice versa. As can be seen from the figure, both the first outer gear sleeve 2 and the second outer gear sleeve 3 have tooling holes for disassembly and assembly.

The invention adopts an integral inner gear ring and two outer gear sleeves to realize the torque transmission function of the coupling, has a compact structure, a small rotation diameter, a large bearing capacity, and reduces the strength requirements and installation difficulties of the reaming bolts, and saves money. It saves installation space and has better practicability.

Claims (8)

1. The integral crowned tooth coupling is characterized by comprising an inner gear ring (1), inner crowned teeth are arranged on the inner side wall of the inner gear ring (1), a first outer gear sleeve (2) and a second outer gear sleeve (3) are sleeved on the inner side wall of the inner gear ring (1), the first outer gear sleeve (2) and the second outer gear sleeve (3) are meshed with the inner gear ring (1) and connected with each other, pressing components are respectively arranged at two ends of the inner gear ring (1) along the circumferential directions of the first outer gear sleeve (2) and the second outer gear sleeve (3), and the pressing components are fixed on the inner gear ring (1) in a detachable mode through end cover components.

2. A displacement compensating monoblock crowned tooth coupling according to claim 1, characterized in that the inner ring gear (1) is of unitary construction.

3. A displacement compensating integral crowned tooth coupling according to claim 1, characterized in that a hold-down bolt (8) is arranged between the hold-down assembly and the end cap assembly and the inner gear ring (1), the hold-down bolt (8) being used to hold down the first outer sleeve (2) and the second outer sleeve (3) to the inner sleeve (1) via the hold-down assembly and the end cap assembly.

4. A displacement compensating integral crowned tooth coupling according to claim 3, characterized in that the compression assembly comprises a first gland (4) and a second gland (7), the end cap assembly comprises a first end cap (5) and a second end cap (6), and the first gland (4), the second gland (7), the first end cap (5) and the second end cap (6) are connected with the inner gear ring (1) by compression bolts (8).

5. A displacement compensating integral crowned tooth coupling according to claim 4, characterised in that a sealing ring (10) is arranged between the first end cap (5) and the second end cap (6).

6. The displacement compensation type integral crowned tooth coupling as claimed in claim 1, characterized in that the side wall of the inner gear ring (2) is provided with a lubricating oil nozzle (9).

7. The displacement compensation type integral crowned tooth coupling of claim 1, characterized in that the first outer gear sleeve (2) and the second outer gear sleeve (3) are both provided with tooling holes.

8. A displacement compensating integral crowned tooth coupling according to claim 1, characterised in that the outer walls of the first (2) and second (3) outer sleeves are provided with crowned or straight teeth.

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