Cross ring coupling

Abstract

The utility model discloses a cross-shaped ring coupling which comprises a spacer ring and half couplings arranged on the two faces of the spacer ring, the two faces of the spacer ring are respectively provided with a line-shaped line groove passing through the axis, the line-shaped line grooves are distributed in a cross-shaped structure in a mutually perpendicular mode, and the two faces of the spacer ring respectively form cross-shaped ring faces. Each half coupling is provided with a pair of integrally-formed bosses, the bosses are tightly assembled at the two ends of the straight line groove, the half couplings are in butt joint with the cross ring face, oil storage through holes are formed in the bosses in a penetrating mode, and the two ends of each oil storage through hole right face the side wall of the straight line groove. By means of the mode, the oil storage through holes are formed in the boss to enhance the lubricating effect of the joint face so as to reduce abrasion and prolong the service life, meanwhile, the arc-shaped edge grooves and the arc-shaped edge strips are additionally arranged to enhance friction force, power transmission precision and reliability are guaranteed, and the whole coupler can stably operate for a long time.

Description

Technical Field

[0001] This utility model relates to the field of couplings, and in particular to a cross-ring coupling. Background Technology

[0002] A cross-type coupling consists of a pair of half-couplings and a spacer ring assembled using a cross-ring interlocking structure. The half-couplings have threaded holes on their sides, and the drive shaft is secured with hexagonal head screws to achieve torque transmission and alignment. Because the half-couplings are made of metal and the spacer ring is made of plastic, the mating surfaces of the spacer ring and the boss experience significant wear under prolonged forward and reverse rotation. This manifests as powder shedding after a period of use. Furthermore, both the boss and the spacer ring have smooth mating surfaces, and under prolonged forward and reverse rotation, the increased wear on these surfaces leads to a significant decrease in friction. This results in a decline in the transmission accuracy of the cross-type coupling. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a cross-ring coupling that enhances the lubrication effect of the mating surface by opening an oil storage through hole on the boss to reduce wear and extend service life. At the same time, it adds arc-shaped grooves and arc-shaped ribs to enhance friction, ensure the accuracy and reliability of power transmission, and enable the entire coupling to operate stably for a long time.

[0004] To solve the above-mentioned technical problems, the present invention provides a cross-ring coupling, comprising a spacer ring and half-couplings disposed on both sides of the spacer ring. Each side of the spacer ring has a groove passing through the shaft center, and the grooves are distributed perpendicularly to each other in a cross shape. The two sides of the spacer ring respectively form a cross-ring surface. The half-couplings are provided with a pair of integrally formed bosses, which are tightly fitted at both ends of the grooves. The half-couplings are in contact with the cross-ring surfaces. An oil storage through hole is provided through the bosses, and the two ends of the oil storage through hole are directly opposite the sidewalls of the grooves.

[0005] In a preferred embodiment of this utility model, the oil storage through hole is filled with grease, and the grease has a thick consistency covering the mating surface of the boss and the slot.

[0006] In a preferred embodiment of the present invention, the boss has a plurality of circular recesses on the side wall that engages with the slotted groove, and the slotted groove has a plurality of circular protrusions on the side wall that engages with the boss, and the circular recesses and protrusions are matched and interlocked one by one.

[0007] In a preferred embodiment of the present invention, the boss has a plurality of arc-shaped grooves on the side wall that engages with the straight groove, and the straight groove has a plurality of arc-shaped ribs on the side wall that engages with the boss, and the arc-shaped grooves and arc-shaped ribs are interlocked in a one-to-one manner.

[0008] In a preferred embodiment of the present invention, the arc-shaped grooves are symmetrically opened on both sides of the oil storage through hole, and at least two arc-shaped grooves are provided on each side of the oil storage through hole.

[0009] In a preferred embodiment of this utility model, the depths of the slots are equal, and the width of the slots is smaller than the inner diameter of the spacer ring.

[0010] In a preferred embodiment of this utility model, the height of the boss does not exceed the depth of the slot, and the length of the boss is less than the wall thickness of the half coupling.

[0011] In a preferred embodiment of this utility model, each half coupling is pre-embedded with an internal hexagonal head screw, the internal hexagonal head screw is parallel to the boss on the same side, and the internal hexagonal head screws are perpendicular to each other.

[0012] In a preferred embodiment of this utility model, the boss is aligned with the outer edge of the half coupling, and a clamping cut is provided at the axis of symmetry of the boss, the clamping cut being perpendicular to the internal hexagonal head screw.

[0013] The beneficial effects of this utility model are as follows: The cross ring coupling provided by this utility model enhances the lubrication effect of the mating surface by opening an oil storage through hole on the boss to reduce wear and extend service life. At the same time, the addition of arc-shaped grooves and arc-shaped ribs enhances friction, ensures the accuracy and reliability of power transmission, and enables the entire coupling to operate stably for a long time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0015] Figure 1 This is an overall structural diagram of a preferred embodiment of the cross-ring coupling of this utility model;

[0016] Figure 2 This is a diagram of the spacer ring structure of a preferred embodiment of the cross-ring coupling of this utility model;

[0017] Figure 3This is a structural diagram of a half-coupling of a preferred embodiment of the cross-ring coupling of this utility model. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1-3 As shown, the embodiments of this utility model include:

[0020] A cross-ring coupling includes a spacer ring 1 and half-couplings 2 disposed on both sides of the spacer ring 1. Each side of the spacer ring 1 has a groove 3 passing through the shaft center. The grooves 3 are distributed perpendicularly to each other in a cross shape. The two sides of the spacer ring 1 respectively form cross-ring surfaces 4. The half-couplings 2 are provided with a pair of integrally formed bosses 5. The bosses 5 are tightly fitted at both ends of the grooves 3. The half-couplings 2 are connected to the cross-ring surfaces 4. An oil storage hole 6 is formed through the bosses 5. The two ends of the oil storage hole 6 are directly opposite the sidewalls of the grooves 3.

[0021] The oil storage hole 6 is filled with grease 7, and the grease 7 has a thick consistency and covers the mating surface of the boss 5 and the slot 3.

[0022] Furthermore, the boss 5 has several circular recesses on the side wall that engages with the slot 3, and the slot 3 has several circular protrusions on the side wall that engages with the boss 5. The circular recesses and protrusions are interlocked and matched one by one.

[0023] Furthermore, the boss 5 has several arc-shaped grooves 8 on the side wall that engages with the straight groove 3, and the straight groove 3 has several arc-shaped ribs 9 on the side wall that engages with the boss 5. The arc-shaped grooves 8 and arc-shaped ribs 9 are interlocked and matched one by one.

[0024] Furthermore, the arc-shaped grooves 8 are symmetrically opened on both sides of the oil storage through hole 6, and at least two arc-shaped grooves 8 are provided on each side of the oil storage through hole 6.

[0025] Furthermore, the depth of the groove 3 is equal, and the width of the groove 3 is smaller than the inner diameter of the spacer ring 1.

[0026] Furthermore, the height of the boss 5 does not exceed the depth of the slot 3, and the length of the boss 5 is less than the wall thickness of the half coupling 2.

[0027] Furthermore, each half-coupling 2 is pre-embedded with an internal hexagonal head screw 10, which is parallel to the boss 5 on the same side and perpendicular to each other.

[0028] Furthermore, the boss 5 is aligned with the outer edge of the half coupling 2, and a clamping cut is provided at the axis of symmetry of the boss 5. The clamping cut is perpendicular to the internal hexagonal head screw 10.

[0029] The assembly process of this product is simple and easy to operate, including the following installation steps:

[0030] Step 1: First, inject the low-viscosity grease 7 into the oil reservoir holes 6 of the two half-couplings 2, and then tighten the spacer ring 1 with the half-couplings 2.

[0031] Step 2: Insert the hex socket head cap screws 10 into the screw holes on the sides of the two half-couplings 2 to complete the assembly.

[0032] To address the shortcomings of existing technologies, this product adds an oil reservoir 6 to the boss 5 of the half-coupling 2. Before installation, low-viscosity grease 7 must be pre-filled into the hole, where it will form a lubricating film within the gap of the assembled product. The spacer ring 1 and the half-coupling 2 are tightly fitted together via a cross-shaped ring surface 4. Under prolonged forward and reverse rotation, the grease 7 continuously flows out through the oil reservoir 6, replenishing the lubrication of the mating surfaces. This significantly reduces wear on the mating surfaces of the spacer ring 1, and the grease also absorbs wear-induced powder. Compared to existing technologies, this product does not experience powder shedding even after extended use, effectively inhibiting wear on the mating surfaces.

[0033] In addition, by further designing the circular protrusions, circular concave points / arc-shaped grooves 8 and arc-shaped ribs 9 to match, the clearance between the mating surfaces of the cross ring coupling will not increase significantly, the friction will not decrease significantly, and the transmission accuracy will not decrease significantly after long-term operation.

[0034] In summary, this utility model provides a cross-ring coupling. By opening an oil storage through hole 6 on the boss 5, the lubrication effect of the mating surface is enhanced to reduce wear and extend service life. At the same time, the addition of arc-shaped grooves 8 and arc-shaped ribs 9 enhances friction, ensures the accuracy and reliability of power transmission, and enables the entire coupling to operate stably for a long time.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cross-ring coupling, characterized in that, The device includes a spacer ring and half-couplings disposed on both sides of the spacer ring. Each side of the spacer ring has a groove passing through the shaft. The grooves are arranged perpendicularly to each other in a cross shape. The two sides of the spacer ring respectively form a cross-shaped ring surface. The half-couplings are provided with a pair of integrally formed bosses. The bosses are tightly fitted at both ends of the grooves. The half-couplings are in contact with the cross-shaped ring surfaces. Oil storage holes are formed through the bosses. The two ends of the oil storage holes are directly opposite the sidewalls of the grooves.

2. The cross-ring coupling according to claim 1, characterized in that, The oil storage through hole is filled with lubricating grease, and the lubricating grease has a thick consistency and covers the mating surface of the boss and the slot.

3. The cross-ring coupling according to claim 1, characterized in that, The boss has several circular recesses on the side wall that engages with the slotted groove, and the slotted groove has several circular protrusions on the side wall that engages with the boss. The circular recesses and protrusions are matched and interlocked one by one.

4. The cross-ring coupling according to claim 1, characterized in that, The boss has several arc-shaped grooves on the side wall that engages with the straight groove, and the straight groove has several arc-shaped ribs on the side wall that engages with the boss. The arc-shaped grooves and arc-shaped ribs are interlocked and matched one by one.

5. The cross-ring coupling according to claim 4, characterized in that, The arc-shaped grooves are symmetrically formed on both sides of the oil storage through hole, and at least two arc-shaped grooves are provided on each side of the oil storage through hole.

6. The cross-ring coupling according to claim 1, characterized in that, The depths of the single-line grooves are equal, and the width of the single-line grooves is smaller than the inner diameter of the spacer ring.

7. The cross-ring coupling according to claim 1, characterized in that, The height of the boss does not exceed the depth of the slot, and the length of the boss is less than the wall thickness of the half coupling.

8. The cross-ring coupling according to claim 1, characterized in that, Each half-coupling has a pre-embedded hexagonal head screw, which is parallel to the boss on the same side and perpendicular to each other.

9. The cross-ring coupling according to claim 8, characterized in that, The boss is aligned with the outer edge of the half coupling, and a clamping cut is provided at the axis of symmetry of the boss. The clamping cut is perpendicular to the internal hexagonal head screw.

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