CN216842793U

CN216842793U - Synchronous automatic clutch oil supply slip ring suitable for high rotating speed

Info

Publication number: CN216842793U
Application number: CN202123217169.7U
Authority: CN
Inventors: 陈克鑫; 王学志; 闫泽; 曲盛楠; 战庆欣; 戴维泽; 张祥; 王春玲
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-28
Anticipated expiration: 2031-12-09

Abstract

The utility model provides a synchronous automatic clutch oil feed sliding ring suitable for high rotational speed includes fuel feeding sliding ring and sliding ring mounting groove, the sliding ring mounting groove is located synchronous automatic separation and reunion's connecting axle, set up the axial oilhole on the connecting axle, through oil collecting ring groove and sliding ring mounting groove intercommunication, the sliding ring subassembly adopts the subdivision formula structure, be provided with fuel feeding joint and limit structure on the sliding ring subassembly outside, it has tin bronze material with the surface casting of sliding ring mounting groove cooperation part, the axial runner that the equipartition was seted up to the sliding ring internal surface is used for the lubrication fitting surface, the sliding ring subassembly floats and installs in the sliding ring mounting groove, and follow pivoted connecting axle through the gag lever post restriction of being connected with the mount and rotate. The utility model discloses a be applicable to the synchronous automatic clutch of high rotational speed of concatenating in the unit shafting, this kind of fuel feeding sliding ring simple structure rotates the epaxial runner of connecting and uses the axial runner to be the main, has reduced synchronous automatic clutch to the requirement of oil feed pressure, makes the lubricating system of unit simpler.

Description

Synchronous automatic clutch oil supply slip ring suitable for high rotating speed

Technical Field

The utility model relates to an oil supply sliding ring, especially a synchronous automatic clutch oil supply sliding ring suitable for high rotational speed.

Background

The synchronous automatic clutch is widely applied as connecting equipment in a mechanical system, the structure of the clutch is complex, a torque transmission gear and a ratchet pawl mechanism in the synchronous automatic clutch must work under a lubricating condition to ensure long-term reliable operation, due to the structural characteristics of the synchronous automatic clutch, the ratchet pawl is generally arranged on the innermost layer of the clutch, an oil supply structure must supply lubricating oil to the position of the ratchet pawl, and if the oil supply structure cannot supply the oil to the deep inside of the clutch, the position of the ratchet pawl of the clutch needs to be changed to adapt to the oil supply structure of the clutch, so that the radial design size of the clutch is overlarge, the design waste is caused, and the dynamic characteristic of a shafting where the clutch is located is adversely affected.

The synchronous automatic clutch is generally arranged in a gear box or directly connected in series in an equipment shafting, when the synchronous automatic clutch is arranged in the gear box, the shafting in the gear box where the clutch is arranged generally has a free end, the free end is not connected with other equipment, an axial oil circuit hole can be processed in the center of the shaft end, one section of the hole is connected with the clutch, the other end of the hole is connected with an oil supply pipe, and lubricating oil can be supplied to the deepest part of the clutch by the oil supply mode.

However, when the clutch is directly connected in series in the equipment shafting, no lubricating oil pipe is installed at the free end, the oil supply structure shown in fig. 1 is adopted at present, a lubricating flow channel is arranged at the support bearing of the input shaft of the clutch, the lubricating oil enters the synchronous automatic clutch through the radial oil hole on the input shaft, and under the high-speed working condition, the input shaft is in a rotating state and is influenced by centrifugal force, and the centrifugal pressure P omega generated by the fluid in the sections from R1 to R2 in the oil hole of the input shaft at the inlet of the radial oil hole needs to be overcome in the process of supplying the lubricating oil to the clutch.

Wherein P ω is 1/2 ρ (ω/60 ρ 2 pi) 2 (R1^2-R2^2)/1000000, wherein,

r1, half outside diameter of oil inlet hole, m

R2, inner radius of oil inlet hole, m

Rho, oil density, kg/m ^3

Omega, rotational speed, r/min

Therefore, the minimum oil supply pressure > P omega at the position of the clutch oil supply requirement R1 is realized, and the higher the rotating speed is, the larger the shaft diameter is, and the higher the value of P omega is. The problem of difficult oil supply limits the application of the synchronous automatic clutch in a high-rotating-speed tandem shafting, and needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of the difficulty of supplying oil in the shafting of high-speed concatenating of current synchronous automatic clutch, providing an oil supply sliding ring.

The patent of the utility model provides a solve the technical scheme that its technical problem adopted and be:

the oil supply slip ring for the synchronous automatic clutch suitable for high rotating speed comprises a slip ring assembly and a slip ring mounting groove, wherein the slip ring mounting groove is positioned on a connecting shaft of the synchronous automatic clutch; an annular groove and an axial oil hole are formed in a connecting shaft of the synchronous automatic clutch, and lubricating oil is supplied from an oil supply joint, flows through the lubricating oil hole in the connecting shaft and finally enters the synchronous automatic clutch; an oil collecting ring groove with a certain width is arranged at the joint of the ring groove and the axial oil hole, the width K of the oil collecting ring groove is larger than 3mm, and the maximum outer diameter size of the oil collecting ring groove, the radial outer side size of the axial oil hole and the radial outer side size of an oil groove in the oil supply sliding ring are all L and are kept consistent to ensure the axial circulation of lubricating oil; the slip ring component adopts a split mechanism with a split surface, a slip ring base body I is connected with a slip ring base body II through bolts and positioning pins, an oil supply joint and a limiting structure are arranged on the outer side of the slip ring component, the limiting structure is realized through a limiting rod, one side of the limiting rod is sleeved on the connecting sleeve I in a clearance fit mode, the connecting sleeve I is fixed on the slip ring base body II through bolt connection, the other side of the limiting rod is sleeved on the connecting sleeve II in a clearance fit mode, the connecting sleeve II is fixed on a fixing frame through bolt connection, the clearance between the limiting rod and the connecting sleeve I and the clearance between the limiting rod and the connecting sleeve II at the position H are larger than 1mm, the limiting rod can play a role of rotating the slip ring without bearing the quality of the oil supply slip ring, the quality of the oil supply slip ring is borne by a connecting shaft, the condition that the slip ring is positioned is avoided, and the slip ring connecting shaft generates overlarge additional force.

Furthermore, three matching surfaces, namely a radial matching surface and two axial matching surfaces, exist between the sliding ring assembly and the ring groove on the connecting shaft, the diameter clearance/axial straight neck ratio at the position D of the radial matching surface is 1.5-2 per thousand, and the clearance typical value at the position J of the axial matching is 0.1-0.3mm, wherein a base body I casting alloy layer I and a base body I casting alloy layer III on the sliding ring base body I, and a base body II casting alloy layer I, a base body II casting alloy layer II and a base body II casting alloy layer III on the sliding ring base body II improve the running-in performance of the contact surface of the sliding ring assembly and the connecting shaft; the matching surface is lubricated by lubricating oil supplied by the oil supply connector, 4-8 flow passages are uniformly distributed in the oil supply sliding ring in the sliding ring base body I and the sliding ring base body II, the cross section of each flow passage is arc-shaped, one flow passage is communicated with an oil way of the oil supply connector, and the flow passages are used for ensuring that the matching surface is effectively lubricated and enough lubricating oil enters the axial oil holes.

The beneficial effects of the utility model are that, to the synchronous automatic clutch of the high rotational speed of tandem connection formula, this kind of fuel feeding sliding ring simple structure, the runner on the rotation piece uses the axial runner to be main, has reduced synchronous automatic clutch to the requirement of oil feed pressure, makes the lubricating system of synchronous automatic clutch application unit simpler.

Drawings

The following further describes the present invention with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a conventional oil supply for a clutch;

FIG. 2 is an axial cross-sectional view of the oil feed slide ring;

FIG. 3 is a cross-sectional view I (section A-A in FIG. 2) of the vertical axis of the oil feeding slip ring;

FIG. 4 is a sectional view II (section B-B in FIG. 2) of the vertical axis of the oil feed slip ring;

fig. 5 is an external view of the slip ring assembly with the connecting shaft removed.

In the figure, 100 sliding bearings, 200 input shafts, 210 radial oil holes, 300 synchronous automatic clutches, 11 connecting shafts, 11a oil collecting ring grooves, 21 sliding ring substrates I, 21a, substrate I cast alloy layers I, 21b, substrate I cast alloy layers II, 21c, substrate I cast alloy layers III, 22 sliding ring substrates II, 22a, substrate II cast alloy layers I, 22b, substrate II cast alloy layers II, 22c, substrate II cast alloy layers III, 31 limiting rods, 32 connecting sleeves I, 33 connecting sleeves II, 41 oil supply joints, 51 fixing frames and 60 synchronous automatic clutches are shown.

Detailed Description

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

In fig. 2, the oil supply slip ring includes two parts, a slip ring assembly and a slip ring mounting groove, the slip ring mounting groove is located on the connecting shaft 11 of the synchronous automatic clutch 60, and the other parts form the slip ring assembly. An annular groove and an axial oil hole are formed in a connecting shaft (11) of the clutch, and lubricating oil is supplied from an oil supply joint 41, flows through the lubricating oil hole in the connecting shaft 11 and finally enters the synchronous automatic clutch 60. In order to ensure that lubricating oil can be effectively supplied to the axial oil hole on the connecting shaft 11, an oil collecting ring groove 11a with a certain width is arranged at the joint of the ring groove and the axial oil hole, the width K of the oil collecting ring groove 11a is larger than 3mm, the maximum outer diameter size of the oil collecting ring groove 11a, the radial outer side size of the axial oil hole and the radial outer side size of an oil groove in the oil supply sliding ring are L, and the three sizes are consistent and are used for ensuring the axial circulation of the lubricating oil. Under the working condition of high rotating speed, the oil hole on the connecting shaft 11 in the structure shown in fig. 2 is axial, compared with the structure shown in fig. 1, the oil supply for the clutch does not need to overcome P omega, and the minimum pressure at the diameter L required by the oil supply for the clutch in fig. 2P_L＞0And (4) finishing.

Three matching surfaces, namely a radial matching surface and two axial matching surfaces, exist in the ring grooves on the sliding ring assemblies and the connecting shaft 11 in the figures 2, 4 and 5, the ratio of the diameter clearance to the axial straight neck at the radial matching surface D is 1.5-2 per thousand, and the connecting shaft 11 and the sliding ring are in a fluid dynamic pressure lubrication state in the high-speed running state of the connecting shaft 11, so that the direct contact between the friction surfaces is avoided, and the service life of the sliding ring assemblies is prolonged. The typical value of the gap at the axial matching J position is 0.1-0.3mm, the working gap is used for meeting the lubricating requirement of a working surface, the damage of the matching surface caused by high-speed rotation of the connecting shaft 11 is avoided, meanwhile, the gap is not too large, so that the leakage amount of lubricating oil passing through the gap is not too large, wherein a base body I casting alloy layer I21 a, a base body II casting alloy layer II 22b and a base body I casting alloy layer III 21c on the sliding ring base body 21 are adopted, a base body II casting alloy layer I22 a, a base body II casting alloy layer II 22b and a base body II casting alloy layer III 22c on the sliding ring base body 22 are made of casting tin bronze materials or other antifriction materials, and the antifriction materials can improve the running-in performance of the contact surface of the sliding ring assembly and the connecting shaft 11, reduce the friction and the abrasion of the contact surface and prolong the service life of the sliding ring. The mating surface is lubricated by lubricating oil supplied by the oil supply joint. And 4-8 flow passages which are uniformly distributed circumferentially are formed in the slip ring base body I21 and the slip ring base body II 22 in the oil supply slip ring, the cross section of each flow passage is arc-shaped, one flow passage is communicated with an oil passage of the oil supply joint 41, and the flow passages are used for ensuring that the matching surface is effectively lubricated and enough lubricating oil enters the axial oil holes.

In the figures 4 and 5, the slip ring component adopts a split mechanism, the slip ring base I21 is connected with the slip ring base II 22 through bolts and positioning pins, the outer side of the slip ring component is provided with an oil supply joint 41 and a limiting structure, the limiting structure is realized through a limiting rod 31, one side of the limiting rod 31 is sleeved on a connecting sleeve I32 through clearance fit, the connecting sleeve I32 is fixed on the sliding ring base II 22 through bolt connection, the other side of the limiting rod 31 is sleeved on the connecting sleeve II 33 through clearance fit, the connecting sleeve II 33 is fixed on the fixed frame 51 through bolt connection, and the clearance between the limiting rod 31 and the connecting sleeve I32 and the clearance between the limiting rod 31 and the connecting sleeve II 33 at the position H are larger than 1mm, so that the limiting rod 31 can play a role of a slip ring to rotate, but the mass of the oil supply slip ring is not borne, and the mass of the oil supply slip ring is borne by the connecting shaft 11, so that the condition that the slip ring is positioned excessively is avoided, and the slip ring generates overlarge additional force on the connecting shaft 11.

The utility model discloses contain parts such as sliding ring body, sliding ring mounting groove, limit structure and constitute, characterized by sliding ring mounting groove is located synchronous automatic separation and reunion's connecting axle, sets up the axial oilhole on the connecting axle, through oil collecting ring groove and sliding ring mounting groove intercommunication, the sliding ring body floats and installs in the sliding ring mounting groove, rotates along with the connecting axle through outside stop gear restriction sliding ring body. The oil collecting ring groove with a certain depth is arranged at the joint of the ring groove and the axial oil hole, the depth of the oil collecting ring groove is larger than 3mm, and the maximum outer diameter size of the oil collecting ring groove, the radial outer side size of the axial oil hole and the radial outer side size of an oil groove in the sliding ring assembly are kept consistent, so that the axial effective circulation of lubricating oil is ensured. The oil supply slip ring and the slip ring mounting groove on the connecting shaft have three matching surfaces, namely a radial matching surface and two axial matching surfaces, the ratio of the diameter clearance/the axial straight neck at the radial matching surface is 1.5-2 per mill, the typical value of the axial matching clearance is 0.1-0.3mm, and the working surface material at the oil supply slip ring side is tin bronze or other antifriction materials. And 4-8 flow passages are uniformly distributed on the circumference in the oil supply slip ring, the cross section of each flow passage is arc-shaped, and one flow passage is communicated with an oil way of the oil supply joint. The limiting structure is realized through the limiting rod, the box body where the oil supply sliding ring and the clutch are located is connected to the two sides of the limiting rod respectively, a certain installation gap exists between the limiting rod and a connecting pair of the box body where the oil supply sliding ring and the clutch are located, the limiting rod can limit the rotation of the oil supply sliding ring, the quality of the oil supply sliding ring is not limited and borne, the oil supply sliding ring is in a floating state, and the quality of the sliding ring is borne by the connecting shaft.

An oil supply slip ring of a synchronous automatic clutch suitable for high rotating speed. The oil-collecting sliding ring is composed of an oil-supplying sliding ring and a sliding ring mounting groove, the sliding ring mounting groove is located on a connecting shaft of synchronous automatic clutch, an axial oil hole is formed in the connecting shaft, the oil-collecting ring groove with a certain width is communicated with the sliding ring mounting groove, the sliding ring assembly is of a split structure, an oil-supplying connector and a limiting structure are arranged on the outer side of the sliding ring assembly, tin bronze materials are cast on the surfaces of the sliding ring and the sliding ring mounting groove matching part, axial flow channels which are uniformly distributed are formed in the inner surface of the sliding ring and used for lubricating the matching surface, the sliding ring assembly is installed in the sliding ring mounting groove in a floating mode, and the floating sliding ring is limited by a limiting rod connected with a fixing frame to rotate along with the rotating connecting shaft. The utility model discloses a be applicable to the synchronous automatic clutch of high rotational speed of concatenating in the unit shafting, this kind of fuel feeding sliding ring simple structure rotates the epaxial runner of connecting and uses the axial runner to be the main, has reduced synchronous automatic clutch to the requirement of oil feed pressure, makes the lubricating system of unit simpler.

Claims

1. The oil supply slip ring for the synchronous automatic clutch is suitable for high rotating speed and is characterized by comprising a slip ring assembly and a slip ring mounting groove, wherein the slip ring mounting groove is positioned on a connecting shaft (11) of the synchronous automatic clutch (60); an annular groove and an axial oil hole are formed in a connecting shaft (11) of the synchronous automatic clutch (60), lubricating oil is supplied from an oil supply joint (41), flows through the lubricating oil hole in the connecting shaft (11) and finally enters the synchronous automatic clutch (60); an oil collecting ring groove (11a) with a certain width is arranged at the joint of the ring groove and the axial oil hole, the width K of the oil collecting ring groove (11a) is larger than 3mm, and the maximum outer diameter size of the oil collecting ring groove (11a), the radial outer side size of the axial oil hole and the radial outer side size of an oil groove in the oil supply sliding ring are L and are consistent to ensure the axial circulation of lubricating oil; the slip ring component adopts a split mechanism with a split middle section, a slip ring base body I (21) is connected with a slip ring base body II (22) through bolts and positioning pins, an oil supply joint (41) and a limiting structure are arranged on the outer side of the slip ring component, the limiting structure is realized through a limiting rod (31), one side of the limiting rod (31) is sleeved on the connecting sleeve I (32) through clearance fit, the connecting sleeve I (32) is fixed on the slip ring base body II (22) through bolt connection, the other side of the limiting rod (31) is sleeved on the connecting sleeve II (33) through clearance fit, the connecting sleeve II (33) is fixed on a fixing frame (51) through bolt connection, the clearance between the limiting rod (31) and the connecting sleeve I (32) and between the limiting rod (31) and the connecting sleeve II (33) at the H position is larger than 1mm, so that the limiting rod (31) can start up to rotate the slip ring without supplying oil, the quality of the slip ring is borne by a connecting shaft (11), the condition that the slip ring is positioned excessively is avoided, so that the slip ring generates overlarge additional force on the connecting shaft (11).

2. The automatic synchronous clutch oil supply slip ring suitable for high rotating speed of claim 1, characterized in that there are three matching surfaces between the slip ring component and the ring groove on the connecting shaft (11), one radial matching surface and two axial matching surfaces, the diameter clearance/axial straight neck ratio at the radial matching surface D is 1.5-2 per thousand, the clearance typical value at the axial matching J is 0.1-0.3mm, wherein the casting alloy layer i (21a) of the base body i and the casting alloy layer iii (21c) of the base body i on the slip ring base body i (21), the casting alloy layer i (22a) of the base body ii, the casting alloy layer ii (22b) of the base body ii and the casting alloy layer iii (22c) of the base body ii on the slip ring base body ii (22) improve the running-in property of the contact surface between the slip ring component and the connecting shaft (11); the matching surface is lubricated by lubricating oil supplied by the oil supply connector (41), 4-8 flow channels are uniformly distributed on the circumference in the sliding ring substrate I (21) and the sliding ring substrate II (22) in the oil supply sliding ring, the cross section of each flow channel is in an arc shape, one flow channel is communicated with an oil way of the oil supply connector (41), and the flow channels are used for ensuring that the matching surface is effectively lubricated and enough lubricating oil enters the axial oil hole.