Displacement compensation type integral crowned tooth coupling
Technical Field
The invention belongs to the technical field of petroleum drilling equipment, and particularly relates to a displacement compensation type integral crowned tooth coupling.
Background
Along with the rapid development of petroleum exploration equipment, the development strength of petroleum drilling machines and core matching equipment is increased, the design requirement on a coupler which is the most frequently applied universal component in a mechanical equipment transmission shaft system is higher and higher, and the coupler mainly comprises two types of a rigid coupler and a flexible coupler. The rigid coupling does not have the capability of compensating the relative offset of the axes of the two shafts to be connected and has no damping performance. The flexible coupling has certain compensation displacement capacity, the compensation amount can be changed along with different types, and couplings generally meeting the requirements comprise a cross universal coupling, a large-torque crowned tooth coupling and the like.
As an improvement, the torque of the cross coupling can reach the allowable use range, but the bearing impact performance is poor, the coupling allows a larger included angle between two shafts, when the shafts run, the included angle is changed, normal transmission can still be realized, and when the included angle is too large, the transmission efficiency is obviously reduced. And the service life of the coupler is short.
As an improvement, the angular compensation of the drum-shaped tooth type coupler is larger than that of a straight tooth type coupler, the drum-shaped tooth type coupler is widely adopted at home and abroad, but the inner tooth sleeve of the drum-shaped tooth type coupler which is commonly used at present is generally in a two-lobe type, and the shear stress is transmitted through a flange connection reaming bolt, so that the requirement on the strength of the reaming bolt is higher. Meanwhile, the accuracy of the coaxiality of the installation of the drum-shaped tooth type coupler has important influences on the running, vibration, noise and service life of the speed reducer and the power end, particularly has larger influence on the service life of the coupler, so that the machining and installation accuracy of the coupler is required to be ensured in the machining and installation processes, and the two-petal coupler needs to be installed and then provided with a reamed hole, so that the requirements on the installation and machining capacity are higher. In order to prolong the service life of the coupler, improve the working performance of a transmission shaft system, reduce the assembly difficulty and the like, the research on the integral coupler which is large in bearing capacity, simple in structure, small in radial size and low in installation difficulty is of great significance. In summary, the existing coupler has the problems of high strength requirement on the reaming bolt and high requirements on installation and field processing.
Disclosure of Invention
The invention aims to provide a displacement compensation type integral crowned tooth coupler, which solves the problems of high strength requirement on a reaming bolt and high installation and field processing requirements of the existing coupler.
The technical scheme adopted by the invention is that,
the utility model provides an integral crown gear coupling of displacement compensation type, includes the ring gear, the inside wall of ring gear is provided with interior crown gear, the inside wall cover of ring gear is equipped with first outer tooth cover and second outer tooth cover respectively, first outer tooth cover and second outer tooth cover are connected with the ring gear meshing, the both ends of ring gear are disposed respectively along the circumference of first outer tooth cover and second outer tooth cover and are compressed tightly the subassembly, compress tightly the subassembly and pass through the end cover subassembly with first outer tooth cover and second outer tooth cover with detachable mode fixed in the ring gear.
The ring gear is of an integral structure.
And a hold-down bolt is arranged between the hold-down assembly and the end cover assembly and the inner gear ring and used for pressing the first outer gear sleeve and the second outer gear sleeve on the inner gear sleeve through the hold-down assembly and the end cover assembly.
The pressing assembly comprises a first pressing cover and a second pressing cover, the end cover assembly comprises a first end cover and a second end cover, and the first pressing cover, the second pressing cover, the first end cover and the second end cover are connected with the inner gear ring through pressing bolts.
And a sealing ring is arranged between the first end cover and the second end cover.
The side wall of the inner gear sleeve is provided with a lubricating oil nozzle.
Tooling holes are formed in the first outer gear sleeve and the second outer gear sleeve.
Both sides of the inner wall of the inner gear sleeve are provided with crowned teeth or straight teeth.
The outer walls of the first outer gear sleeve and the second outer gear sleeve are provided with crowned teeth or straight teeth
The invention has the beneficial effects that: the displacement compensation type integral crowned tooth coupler has the advantages of radial, axial and angular equiaxial deviation compensation capability, low requirement on the strength of a reaming bolt, compact structure, small turning radius, high bearing capacity, stable transmission, high transmission efficiency and convenience in disassembly and assembly. The transmission device is particularly suitable for shafting transmission of various machines such as petroleum, chemical engineering, general machinery and the like, and mainly comprises:
(1) the invention has the axial deviation compensation capability in radial direction, axial direction and angular direction, meets the use requirement of shafting transmission which can generate displacement, does not need to move a connecting shaft when replacing a wearing part, is easy to align and adjust, and reduces the difficulty of installation and maintenance.
(2) The invention adopts the bolt to carry out compression and limiting, the bolt does not bear shear stress, and the strength requirement and the installation precision requirement on the reaming bolt are reduced.
(3) The inner gear ring is integral, and a reaming hole, a reaming bolt and a connecting flange do not need to be prepared, so that the processing difficulty is reduced. The rotary radius is small, the volume is small, the rotary inertia is small, and the external dimension and the weight are smaller than the values recommended by the industry standard. The design requirements of simple design and compact structure of the oil drilling equipment are met.
Drawings
FIG. 1 is a schematic front view of a displacement compensating, integral crowned tooth coupling of the present invention;
FIG. 2 is an assembly schematic of a displacement compensating, integral crowned tooth coupling of the present invention;
FIG. 3 is a schematic cross-sectional view A-A of a displacement compensating integral crowned tooth coupling of the present invention;
fig. 4 is a schematic illustration of the disassembly and assembly of a displacement compensating integral crowned tooth coupling of the present invention.
In the figure, 1 is an inner gear ring, 2 is a first outer gear sleeve, 3 is a second outer gear sleeve, 4 is a first gland, 5 is a first end cover, 6 is a second end cover, 7 is a second gland, 8 is a compression bolt, 9 is a lubricating oil nozzle, and 10 is a sealing ring.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides an integral crown gear coupling of displacement compensation type, including ring gear 1, the inside wall of ring gear 1 is provided with interior crown gear, the inside wall that ring gear 1 is close to both ends is equipped with first outer tooth cover 2 and second outer tooth cover 3 respectively, first outer tooth cover 2 and second outer tooth cover are connected with ring gear 1 meshing, ring gear 1's both ends dispose respectively along first outer tooth cover 2 and second outer tooth cover 3 circumference and compress tightly the subassembly, compress tightly the subassembly and pass through the end cover subassembly with first outer tooth cover 2 and second outer tooth cover 3 with detachable mode fixed in ring gear 1.
Further, the ring gear 1 is of an integral structure.
The inner gear ring 1 in the displacement compensation type integral crowned tooth coupler is arranged to be integral, a reaming hole, a reaming bolt and a connecting flange do not need to be prepared, and the processing difficulty is reduced
Further, a pressing bolt 8 is arranged between the pressing component and the end cover component and the inner gear ring 1, and the pressing bolt 8 is used for pressing the first outer gear sleeve 2 and the second outer gear sleeve 3 to the inner gear sleeve 1 through the pressing component and the end cover component.
According to the displacement compensation type integral crowned tooth coupler, the compression bolt 8 is adopted for compression and limiting, the compression bolt 8 is only used for fastening, the limiting function is achieved, and the requirements on the strength and the installation accuracy of a reaming bolt due to reduction of shearing stress are not born.
Further, the pressing assembly comprises a first pressing cover 4 and a second pressing cover 7, the end cover assembly comprises a first end cover 5 and a second end cover 6, and the first pressing cover 4, the second pressing cover 7, the first end cover 5 and the second end cover 6 are connected with the inner gear ring 1 through pressing bolts 8.
The displacement compensation type integral crowned tooth coupling adopts the end cover group and the gland group, and plays a role in further stabilizing the coupling.
Further, a seal ring 10 is arranged between the first end cap 5 and the second end cap 6.
The displacement compensation type integral crowned tooth coupling is provided with the sealing ring 10, so that the precision of the coupling can be further improved.
Further, a lubricating oil nozzle 9 is arranged on the side wall of the first outer gear sleeve 2.
The displacement compensation type integral crowned tooth coupling is internally provided with the lubricating oil nozzle 9, lubricating oil or grease is filled into the lubricating oil nozzle 9 for lubrication, and the two sealing rings 10 are used for sealing, so that the oil leakage phenomenon is reduced, and the green and environment-friendly effect is achieved.
Further, the tooling holes are formed in the first outer gear sleeve 2 and the second outer gear sleeve 3.
A plurality of tool holes are formed in the displacement compensation type integral crowned tooth coupler, so that the device is convenient to disassemble and assemble, and the disassembling and assembling efficiency is improved.
The outer walls of the first outer gear sleeve 2 and the second outer gear sleeve 3 are both provided with crowned teeth or straight teeth.
The displacement compensation type integral crowned teeth coupler is provided with the crowned teeth, the torque transmission function of the coupler is optimized through meshing of the crowned teeth, when two axes do not have angular displacement, the coupler has a radial compensation function, and when the two axes do not have radial displacement, the axes of the external tooth shaft sleeve have the angular compensation function.
The working principle of the displacement compensation type integral crowned tooth coupling is as follows:
referring to fig. 1, the coupler and the shaft are connected through splines or flat keys and other keys, the axial length of the coupler can be reduced through a spline connection mode, the processing difficulty is low through a flat key connection mode, and the processing cost can be reduced. And is also suitable for other key connections.
Referring to fig. 2, torque is transmitted by the engagement of the inner gear ring 1 with the first and second outer gear sleeves 2, 3 through the internal and external teeth, and the relative displacement of the two associated transmission axes is compensated by the axis oscillation of the gear rings of the first and second outer gear sleeves 2, 3. The drum degree of the crowned tooth in the length direction is in direct proportion to the angular displacement, and the larger the drum degree is, the larger the compensation displacement is. The outer teeth are spherical surfaces, the centers of the spherical surfaces are on the gear axis, the tooth side gaps are large, the crowned tooth coupling allows large angular displacement to be generated, the capacity of transmitting torque is improved by improving the contact condition of the crowned teeth, and the service life is prolonged. Two ends of the first end cover 5 and the first gland 4, and two ends of the second end cover 6 and the second gland 7 are respectively compressed by the compression bolts 8. The first outer gear sleeve 2 and the second outer gear sleeve 3 can be crowned teeth and straight teeth.
Referring to fig. 3, lubricating oil or grease is filled through the lubricating oil nozzle 9 for lubrication, and the two sealing rings 10 are used for sealing, so that the oil leakage phenomenon is avoided, and the environment is protected.
Referring to fig. 4, during dismounting and maintenance, the inner gear ring 1 moves leftwards, the right pressing bolt 8 is unscrewed, the second end cover 6, the second pressing cover 7 and the sealing ring 10 are disengaged, and then the inner gear ring 1 moves leftwards until the inner gear ring 1 is disengaged from the second outer gear sleeve 3, otherwise, the operation is feasible. As can be seen from the figure, the first outer gear sleeve 2 and the second outer gear sleeve 3 are both provided with tool holes for dismounting and the like.
The invention adopts the integral inner gear ring and the two outer gear sleeves to realize the torque transmission function of the coupler, has compact structure, small rotation diameter and large bearing capacity, reduces the strength requirement and the installation difficulty of the reaming bolt, saves the installation space and has better practicability.