CN101639098A

CN101639098A - Short rzeppa synchronous universal coupling

Info

Publication number: CN101639098A
Application number: CN200810048686A
Authority: CN
Inventors: 王朝襄; 易平
Original assignee: XIANGFAN BOYA MACHINERY CO Ltd
Current assignee: XIANGFAN BOYA MACHINERY CO Ltd
Priority date: 2008-07-29
Filing date: 2008-07-29
Publication date: 2010-02-03

Abstract

The invention provides a short rzeppa synchronous universal coupling, which is mainly used for the power transmission with short distance, small inclination angle and high rotating speed in the metallurgical, heavy-duty, mining, lifting, transportation machinery and other industries. The coupling consists of two all-sealed rzeppa universal joints which mesh with each other through two outer ringsprovided with teeth on the end surfaces and are fastened through a bolt, wherein an inner hole of an inner ring is a spline or keyway hole and is matched with corresponding shaft extension to achive the transmission of a driving/driven end; a steel ball is arranged between the inner ring and the outer rings; the steel ball is arranged in a window of a cage; the cage is embedded between the inner ring and the outer rings; a link bolt does not bear shear force formed by torque transmission ; and torque is transmitted to the driven end through an inner-ring channel of the driving end, the steel ball and an outer-ring channel. The coupling has the advantages of constant-speed transmission, smooth operation, compact structure, high bearing capacity, great angular compensation (generally up to 5degrees), strong adaptability to field work, convenient installation and adjustment, improvement on internal friction and wear, longer life span and capability of effectively preventing vibration from causing bolts to loosen.

Description

Short rzeppa synchronous universal coupling

Affiliated technical field

The present invention relates to the short rzeppa synchronous universal coupling in the mechanical transmission fields.

Background technique

Hooks coupling universal coupling commonly used in the modern industry mainly contains types such as cross-axle universal shaft coupling, crown gear coupling, synchro-nizing universal coupling with ball and sacker.Short type Hooks coupling universal coupling commonly used is mainly crown gear coupling, and it is very short that crown gear coupling can allow the diaxon pitch arrangement to get, and is used widely in transmission system; Synchro-nizing universal coupling with ball and sacker is because of having good synchronism and bigger operating angle, and the application in China the recent two decades has obtained fast development.Be that example illustrates problem and the deficiency that it exists below with the crown gear coupling in application.Fig. 1 is the structure diagram of crown gear coupling, develop by the development of ordinary straight gear coupling, have all standards and series product at home, outward, be mainly used in short distance, small inclination, the high-revolving power transmission of industries such as metallurgy, heavy type, mine, lifting, Transport Machinery.It is made up of parts such as two cydariform external tooth covers and a pair of straight-tooth internal tooth gear rings, the engagement transmitting torque of inner, external tooth, and carry out the relativity shift that axis swing (title angular displacement) compensates two transmission axis by cydariform external tooth cover and straight-tooth ring gear.Crown gear coupling has compact structure, bearing capacity height, advantage that rotary inertia is little, but the angular compensatory amount is little, generally be not more than 1.5 °, higher to installation precision and transmission system rigidity requirement, install and adjust difficulty, use in the bigger environment of vibrations and easily produce tooth surface abrasion destruction, attachment bolt is also loosening easily in the use, has increased and has safeguarded user cost.

Summary of the invention

For overcoming the deficiencies in the prior art, it is the short rzeppa synchronous universal coupling of independent all-sealed structure that goal of the invention of the present invention is to provide a kind of cycle surface band tooth engagement, single ball cage universal joint, the work pivot angle that crown gear coupling exists is little to solve, adjustment and installation precision require high, vibration sensing is easily produced working flank wear-out failure problem in using, reduce coupling simultaneously and use installation to adjust difficulty and technology cost, and overcome the loosening easily defective of attachment bolt.

Technical program of the present invention lies in: two inner rings cooperate with corresponding shaft extension and connect, and realization connects and transmission of power with master and slave moving axis, and inner ring has splined hole or dowel hole, realizes the transmission joint with master and slave moved end; Have the flange boss on the external cylindrical surface of outer ring, with two and above bolt two outer rings are fixed together on the flange boss, the outer ring is arranged on the extroversion of inner ring, it is characterized in that: two groups of steel balls are housed between inner ring and the outer ring, steel ball is installed in the window of retainer, and retainer is embedded between inner ring and the outer ring.

The surface of contact of two outer rings of the present invention is a toothing, is meshing with each other by the end face tooth and realizes drive end and driven end transmission of power; Bolt only plays the effect of fastening two outer rings, does not bear the shearing force that transmitting torque forms.

The retainer both sides that the present invention is embedded with steel ball are equipped with the sealing system that oil sealing and sealing baffle, hole are formed with back-up ring respectively, and gland is equipped with in the outer end of sealing system, on the screw of gland oil nozzle is housed.

On inner ring of the present invention, the outer ring, have many to be oval or circular straight flute road respectively along the circumference cross section that evenly distributes with the steel ball contact position.Torque is transmitted through the raceway groove of bear inner ring grooved railway, steel ball, outer ring.

Coupling of the present invention is to carry out transmission of torque by the steel ball on inside and outside circle and the retainer therebetween, realize independent hermetically sealed with oil sealing and sealing baffle, hole with the combination of back-up ring, strong to reach the suitable ability of environment, have bigger work pivot angle, the purpose of easy installation and removal.

The present invention combines the structural feature of general synchro-nizing universal coupling with ball and sacker and crown gear coupling, has synchro-nizing universal coupling with ball and sacker constant-speed transmission, running concurrently steadily and crown gear coupling compact structure, advantage that bearing capacity is big; Substitute crowned teeth as force transfer element with steel ball, increased coupling angular compensatory ability, generally can reach 5 ° (limited by sealing configuration, as adopt special sealing, the angular compensatory amount can reach 8 °), significantly reduced to install and adjusted difficulty, improved internal friction, wear condition, prolonged working life, the field work adaptive capacity is strong; Two outer rings are meshing with each other by the end face tooth, have eliminated the suffered shearing force of attachment bolt, effectively prevent to produce because of vibration causes the phenomenon of bolt looseness.

Description of drawings

Fig. 1 is the structure diagram of prior art crown gear coupling;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is an inner ring structural representation of the present invention;

Fig. 5 is the side view of Fig. 4;

Fig. 6 is a retainer structural representation of the present invention;

Fig. 7 is an outer ring structure schematic representation of the present invention.

Embodiment

As Fig. 2, shown in Figure 3, the present invention is made up of with back-up ring 8, gland 9, oil nozzle 10 inner ring 1, oil sealing 2, retainer 3, steel ball 4, outer ring 5, bolt 6, sealing baffle 7, hole; Inner ring 1 has spline through hole or band keyway endoporus to cooperate connection with corresponding shaft extension, and have a sphere ring boss on inner ring 1 external diameter, match with the inner ball surface of

retainer

3,4 liang of groups of steel ball are housed between inner ring 1 and the outer ring 5, and the concrete quantity of steel ball 4 is determined by required transmission capacity and internal geometric size; Have many to be oval or circular straight flute road along the circumference cross section that evenly distributes with steel ball 4 contact position on inner ring 1, the outer ring 5, torque is transmitted (or contrary direction) through the raceway groove of the raceway groove of inner ring 1, steel ball, outer ring 5; Two uniform bolts 6 of outer ring 5 usefulness are fixed together, have the five equilibrium tooth on 5 end faces of outer ring and be used for transmitting torque, 6 on uniform bolt plays 5 effects of two outer rings of fastening connection, the not direct transmitting torque of bolt 6, bolt 6 force-bearing situations have been improved, the tooth-like structure decrease of outer ring 5 end faces the quantity of attachment bolt 6, improved the reliability that connects transferring power, it is independently whole that two half-couplings are respectively had of one's own, the sequence of sanqu songs within a particular musical mode when preventing that the two halves coupling from installing, single hermetic ball cage universal joint can directly corresponding installations, need not to decompose assembling again, give end user's installation, disassembling section is provided convenience, and the endoporus of outer ring 5 matches with the outer spherical surface of retainer 3; Steel ball 4 is installed in the window of retainer 3, the effect of retainer 3 is that the steel ball of being controlled is on the same equidistant point constantly, in the retainer 3, external diameter is respectively and inner ring 1, the part of two spheres that match in outer ring 5, its centre of sphere is symmetric arrangement to steel ball fenestra median plane, this is the structural feature of ball cage coupling, its effect is that the steel ball of being controlled is on the same equidistant point constantly, to reach the effect of constant-speed transmission, torque is imported by the drive end shaft extension, raceway groove through the drive end inner ring, steel ball, the raceway groove of outer ring is to the raceway groove of driven end outer ring, steel ball, the raceway groove of inner ring transmits, and exports through driven moved end shaft extension; Retainer 3 both sides that are embedded with steel ball 4 are equipped with oil sealing 2 and sealing baffle 7 respectively, the sealing system that the hole is formed with back-up ring 8, oil sealing 2 is in the inboard of two glands 9, sealing baffle 7, the hole uses back-up ring 8 at the middle part, gland 9 is equipped with in the outer end of sealing system, oil nozzle 10 is housed on the screw of gland 9, the quantity of oil nozzle 10 is decided as required, gland 9 usefulness screws are contained on the outside end face of outer ring 5, gland 9, oil sealing 2, sealing baffle 7, the independent all-sealed structure of single ball cage universal joint is formed in the hole with back-up ring 8, the inner filling ageing-resistant performance is good, the long-acting lubricating grease that contains extreme pressure agent, this all-sealed structure can prevent effectively that internal lubrication fat from revealing and introduced contaminants enters universal joint inside, can fully ensure the normal operation of coupling.

As Fig. 4, shown in Figure 5, have a sphere ring boss on inner ring 1 external diameter, inner ring 1 has spline through hole or band keyway endoporus to cooperate connection with corresponding shaft extension, has many to be ellipse or circular straight flute road along the circumference cross section that evenly distributes with the contact position of steel ball.

As shown in Figure 6, retainer 3 inside and outside footpaths are respectively the parts of two spheres matching with inner ring, outer ring, and its centre of sphere is symmetric arrangement to steel ball fenestra median plane, and steel ball is installed in the window of retainer 3.

As shown in Figure 7, have the five equilibrium tooth on 5 end faces of outer ring, have many to be oval or circular straight flute road with the contact position of steel ball on the outer ring 5 along the circumference cross section that evenly distributes.

Claims

1, a kind of short rzeppa synchronous universal coupling, two inner rings (1) have splined hole or dowel hole, cooperate with corresponding shaft extension to connect, and realization connects and transmission of power with master and slave moving axis; Have the flange boss on the external cylindrical surface of outer ring (5), with two and above bolt (6) two outer rings (5) are fixed together on the flange boss, outer ring (5) is arranged on the extroversion of inner ring (1), it is characterized in that: between inner ring (1) and outer ring (5) two groups of steel balls (4) are housed, steel ball (4) is installed in the window of retainer (3), and retainer (3) is embedded between inner ring (1) and outer ring (5).

2, short rzeppa synchronous universal coupling according to claim 1 is characterized in that: the surface of contact of two outer rings (5) is a toothing, is meshing with each other by the end face tooth and realizes drive end and driven end transmission of power; Bolt (6) only plays fastening two outer rings (5) effect, does not bear the shearing force that transmitting torque forms.

3, short rzeppa synchronous universal coupling according to claim 1 and 2, it is characterized in that: retainer (3) both sides that are embedded with steel ball (4) are equipped with the sealing system that oil sealing (2) and sealing baffle (7), hole are formed with back-up ring (8) respectively, gland (9) is equipped with in the outer end of sealing system, and oil nozzle (10) is housed on the screw of gland (9).

4, short rzeppa synchronous universal coupling according to claim 3 is characterized in that: inner ring (1), outer ring (5) go up, have respectively along the circumference cross section that evenly distributes with steel ball (4) contact position and be oval or circular straight flute road.Torque is transmitted through the raceway groove of inner ring (1) raceway groove, steel ball (4), outer ring (5).