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CN-224214592-U - Oldham coupling

CN224214592UCN 224214592 UCN224214592 UCN 224214592UCN-224214592-U

Abstract

The utility model discloses an Oldham coupling which comprises a spacing ring and half couplings arranged on two sides of the spacing ring, wherein two sides of the spacing ring are respectively provided with a linear slot passing through an axle center, the linear slots are vertically distributed in a cross-shaped structure, two sides of the spacing ring respectively form a cross ring surface, the half couplings are provided with a pair of integrally formed bosses, the bosses are tightly matched with two ends of the linear slots, the half couplings are in butt joint with the cross ring surface, the bosses are penetratingly provided with oil storage through holes, and two ends of the oil storage through holes are opposite to the side walls of the linear slots. Through the mode, the oil storage through hole is formed in the boss to enhance the lubrication effect of the joint surface so as to reduce abrasion and prolong the service life, and meanwhile, the arc-shaped prismatic grooves and the arc-shaped prismatic strips are additionally arranged to enhance the friction force, so that the power transmission precision and reliability are ensured, and the whole coupling can stably operate for a long time.

Inventors

  • XU SHIJUN
  • WAN ZHIYONG

Assignees

  • 苏州怡合达自动化科技有限公司

Dates

Publication Date
20260508
Application Date
20250619

Claims (9)

  1. 1. The utility model provides a cross ring shaft coupling, its characterized in that includes the spacer ring and sets up the half shaft coupling at the spacer ring both sides, a word wire casing through the axle center has respectively been seted up at the both sides of spacer ring, a word wire casing is with cross structure mutually perpendicular distribution, the both sides of spacer ring form the cross anchor ring respectively, half shaft coupling is provided with a pair of integrated into one piece's boss, boss close-fitting is at the both ends of a word wire casing, half shaft coupling and cross anchor ring butt joint, run through on the boss and seted up the oil storage through-hole, the both ends of oil storage through-hole just to the lateral wall of a word wire casing.
  2. 2. The oldham coupling according to claim 1, wherein grease is poured into the oil storage through hole, and the grease consistency covers the joint surface of the boss and the linear groove.
  3. 3. The oldham coupling according to claim 1, wherein said boss has a plurality of circular pits formed in a side wall thereof which is engaged with said linear slot, said linear slot has a plurality of circular bumps formed in a side wall thereof which is engaged with said boss, said circular pits and circular bumps being snap-fitted in one-to-one correspondence.
  4. 4. The oldham coupling according to claim 1, wherein said boss has a plurality of arcuate ribs on a side wall thereof engaging said linear slot, said linear slot has a plurality of arcuate ribs on a side wall thereof engaging said boss, said arcuate ribs and arcuate ribs are snap fit one to one.
  5. 5. The oldham coupling according to claim 4, wherein the arcuate prismatic grooves are symmetrically formed on both sides of the oil storage through hole, and at least two arcuate prismatic grooves are provided on each side of the oil storage through hole.
  6. 6. The oldham coupling according to claim 1, wherein the linear grooves are of equal depth, the width of the linear grooves being less than the inner diameter of the spacer ring.
  7. 7. The oldham coupling according to claim 1, wherein the height of the boss does not exceed the depth of the linear groove, and the length of the boss is less than the wall thickness of the half coupling.
  8. 8. The oldham coupling according to claim 1, wherein each half coupling is pre-embedded with a hexagon socket head cap screw, wherein the hexagon socket head cap screws are parallel to the boss on the same side, and the hexagon socket head cap screws are perpendicular to each other.
  9. 9. The oldham coupling according to claim 8, wherein the boss is aligned with the outer edge of the coupling half, and wherein a hoop notch is formed in the boss at the symmetry axis, and wherein the hoop notch is perpendicular to the hexagon socket head cap screw.

Description

Oldham coupling Technical Field The utility model relates to the field of couplings, in particular to an Oldham coupling. Background The cross coupling is formed by assembling a pair of half couplings and a spacing ring through a cross ring buckle structure, threaded holes are formed in the side faces of the half couplings, and the functions of torque transmission and deviation correction are achieved through a mode that a driving shaft is locked by inner hexagonal cylindrical head screws. Because the material of the half-coupling is metal, and the spacing ring is plastic, after the two are tightly matched through the cross ring surface, under the long-time positive and negative rotation condition, the matching surface of the spacing ring and the boss is seriously worn, and the situation that the cross ring coupling falls off after being used for a period of time is particularly shown. In addition, the matching surface of the coupling boss and the spacer ring is a smooth surface, the spacer ring is also a smooth surface, the coupling boss and the spacer ring are tightly matched through a cross ring surface, and under the condition of long-time positive and negative rotation, when the gap is increased due to abrasion of the matching surface of the spacer ring and the boss, the friction force can be obviously reduced. The transmission accuracy of the cross-shaped ring coupler is reduced. Disclosure of utility model The utility model mainly solves the technical problem of providing the cross-shaped ring coupler, which enhances the lubrication effect of a joint surface by arranging the oil storage through hole on the boss so as to reduce abrasion and prolong the service life, and meanwhile, the arc-shaped prismatic grooves and the arc-shaped prismatic ribs are additionally arranged so as to enhance the friction force, thereby ensuring the power transmission precision and reliability and enabling the whole coupler to run stably for a long time. In order to solve the technical problems, the cross-shaped ring coupler comprises a spacing ring and half couplers arranged on two sides of the spacing ring, wherein two sides of the spacing ring are respectively provided with a line slot passing through an axle center, the line slots are distributed in a cross-shaped structure in a mutually perpendicular mode, two sides of the spacing ring respectively form a cross-shaped ring surface, the half couplers are provided with a pair of integrally formed bosses, the bosses are tightly matched with two ends of the line slot, the half couplers are in butt joint with the cross-shaped ring surface, oil storage through holes are formed in the bosses in a penetrating mode, and two ends of the oil storage through holes are opposite to the side walls of the line slot. In a preferred embodiment of the present utility model, grease is poured into the oil storage through hole, and the grease consistency covers the joint surface of the boss and the linear slot. In a preferred embodiment of the utility model, the boss is provided with a plurality of circular concave points on the side wall jointed with the linear wire groove, the linear wire groove is provided with a plurality of circular convex points on the side wall jointed with the boss, and the circular concave points and the circular convex points are in one-to-one corresponding buckling fit. In a preferred embodiment of the utility model, the boss is provided with a plurality of arc-shaped prismatic grooves on the side wall jointed with the linear slot, the linear slot is provided with a plurality of arc-shaped prismatic bars on the side wall jointed with the boss, and the arc-shaped prismatic grooves and the arc-shaped prismatic bars are correspondingly buckled and matched one by one. In a preferred embodiment of the present utility model, the arc-shaped grooves are symmetrically formed on two sides of the oil storage through hole, and at least two arc-shaped grooves are disposed on each side of the oil storage through hole. In a preferred embodiment of the present utility model, the depth of the word line grooves is equal, and the width of the word line grooves is smaller than the inner diameter of the spacer ring. In a preferred embodiment of the utility model, the height of the boss does not exceed the depth of the linear slot, and the length of the boss is less than the wall thickness of the coupling half. In a preferred embodiment of the present utility model, each coupling half is pre-embedded with an inner hexagonal cylindrical head screw, the inner hexagonal cylindrical head screw is parallel to the boss on the same side, and the inner hexagonal cylindrical head screws are mutually perpendicular. In a preferred embodiment of the utility model, the boss is aligned to the outer edge of the half coupling, and the symmetrical axis of the boss is provided with a hoop notch which is perpendicular to the hexagon socket head cap screw. The cross-shaped ring coupler has the benefici