Rotary Joint for Wet Clutch of Mechanical Press

Abstract

The present invention discloses a rotary joint for a wet clutch of a mechanical press, which includes an intermediate rotating shaft, a flange, a rotary sealing ring, a deep groove ball bearing I, a housing, a spacer sleeve, a deep groove ball bearing II and a pressure plate. The intermediate rotating shaft is fixed on the housing through the deep groove ball bearing I and the deep groove ball bearing II to achieve rotation. The flange is fixed on the oil receiving box of the press through inner hexagon socket head cap screws and is connected to the housing through inner hexagon socket head cap screws I. The spacer sleeve is fixed on the housing through a threaded cylindrical pin. There is a clearance fit between the intermediate rotating shaft and the spacer sleeve. A combined sealing ring is provided on the spacer sleeve. The rotary sealing ring is fixed on the intermediate rotating shaft through interference fit. The structure of the present invention is simple, easy to process, convenient for installation and maintenance, can solve the problems of mutual mixing of pressure oil and lubricating oil in the rotary joint and inability to maintain pressure, and has good economy and reliability.

Description

Technical Field

[0001] The present invention relates to a rotary joint device for a wet clutch of a mechanical press, which is applied to the forging industry and belongs to the technical field of mechanical presses. Background Art

[0002] Currently, hydraulic oil needs to be input into rotating devices on many equipment as a power source, lubricant or coolant for other components. The rotary joint for the wet clutch of a mechanical press is a device for inputting pressure oil and lubricating oil into the rotating clutch. In the existing rotary joint structure, a sealing ring is used to seal between the intermediate rotating shaft and the non-rotating housing. The sealing ring is prone to wear, and it is easy to have the phenomenon that the pressure oil and lubricating oil are mutually in series, and the pressure maintaining effect is poor, resulting in insufficient oil pressure of the pressure oil input into the clutch and too high oil pressure of the lubricating oil, which causes the wet clutch to fail to work properly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rotary joint for a wet clutch of a mechanical press aiming at the defects existing in the prior art.

[0004] To solve this technical problem, the present invention provides a rotary joint for a wet clutch of a mechanical press, which includes an intermediate rotating shaft, a flange, a rotary sealing ring, a deep groove ball bearing I, a housing, a spacer sleeve, a deep groove ball bearing II and a pressure plate. The deep groove ball bearing I and the deep groove ball bearing II are fixed on the housing by a hole retaining ring I, a hole retaining ring II and a shaft retaining ring; the pressure plate is fixed on the housing by an internal hexagon socket head cap screw II, and the inner stop surface thereof fixes the deep groove ball bearing II; the intermediate rotating shaft is fixed on the housing through the deep groove ball bearing I and the deep groove ball bearing II and realizes rotation. The flange is fixed on the oil receiving box of the press by an internal hexagon socket head cap screw and is connected to the housing by an internal hexagon socket head cap screw I; the spacer sleeve is fixed on the housing by a threaded cylindrical pin. There is a clearance fit between the intermediate rotating shaft and the spacer sleeve. A combined sealing ring is provided on the spacer sleeve. The rotary sealing ring is fixed on the intermediate rotating shaft by interference fit; pressure oil and lubricating oil inlet grooves, a pressure oil outlet hole, a lubricating oil outlet hole I and a lubricating oil outlet hole II are provided on the intermediate rotating shaft; pressure equalizing grooves are uniformly distributed radially on the intermediate rotating shaft; the lubricating oil and the pressure oil enter the interior of the rotary joint through the lubricating oil inlet hole and the pressure oil inlet hole on the housing, then pass through the through holes on the spacer sleeve, enter the intermediate rotating shaft rotating together with the high-speed shaft, and then flow into the wet clutch from the pressure oil outlet hole, the lubricating oil outlet hole I and the lubricating oil outlet hole II thereon, so as to achieve the purpose of supplying oil to the rotating clutch.

[0005] The spacer sleeve is provided with through holes, and the housing is provided with a pressure oil inlet hole and a lubricating oil inlet hole. The lubricating oil inlet hole and the pressure oil inlet hole are aligned with the holes on the spacer sleeve.

[0006] The intermediate rotating shaft is fixed on the high-speed shaft of the press by external hexagon screws, and a first sealing ring and a second sealing ring are used to ensure no leakage between the high-speed shaft and the intermediate rotating shaft.

[0007] Advantages: The structure of the present invention is simple, easy to process, convenient for installation and maintenance, can solve the problems of mutual mixing of pressure oil and lubricating oil in the rotary joint and inability to maintain pressure, and has good economy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is the main structural schematic view of the present invention;

[0009] Figure 2 for the present invention Figure 1 is an enlarged schematic view of part X;

[0010] Figure 3 for the present invention Figure 1 is a sectional view taken along line A-A of the present invention.

[0011] In the figure: 1 intermediate rotating shaft, 2 flange, 3 rotary sealing ring, 4 deep groove ball bearing I, 5 housing, 6 spacer sleeve, 7 sealing ring, 8 retaining ring for hole I, 9 deep groove ball bearing II, 10 pressure plate, 11 shaft retaining ring, 12 cylindrical pin, 13 combined sealing ring, 14 retaining ring for hole II, 15 first sealing ring, 16 second sealing ring, 17 internal hexagon socket head cap screw I, 18 internal hexagon socket head cap screw II; A lubricating oil inlet hole, B pressure oil inlet hole, C lubricating oil and pressure oil drain hole, D pressure oil outlet hole, E first lubricating oil outlet hole, F second lubricating oil outlet hole, equalizing groove G. DETAILED DESCRIPTION OF THE INVENTION

[0012] The following will describe the present invention in detail with reference to the drawings and embodiments.

[0013] As Figures 1 - 3 shown, the present invention provides a rotary joint for a wet clutch of a mechanical press, including an intermediate rotating shaft 1, a flange 2, a rotary sealing ring 3, a deep groove ball bearing I 4, a housing 5, a spacer sleeve 6, a deep groove ball bearing II 9 and a pressure plate 10. The intermediate rotating shaft 1 is fixed on the housing 5 through the deep groove ball bearing I 4 and the deep groove ball bearing II 9 and realizes rotation. The flange 2 is fixed on the oil receiving box of the press by internal hexagon socket head cap screws and is connected to the housing 5 through the internal hexagon socket head cap screw I 17; the spacer sleeve 6 is fixed on the housing 5 by a threaded cylindrical pin 12 to ensure that the spacer sleeve 6 does not rotate with the intermediate rotating shaft 1; there is a clearance fit between the intermediate rotating shaft 1 and the spacer sleeve 6, and the oil pressure stability of the pressure oil and the lubricating oil is ensured by means of clearance sealing; a combined sealing ring 13 is provided on the spacer sleeve 6 to ensure that the lubricating oil does not leak out; the rotary sealing ring 3 is fixed on the intermediate rotating shaft 1 by interference fit.

[0014] A sealing ring 7 is provided on the spacer sleeve 6 to prevent the mutual leakage of pressure oil and lubricating oil in the gap between the spacer sleeve 6 and the housing 5. The housing 5 is provided with lubricating oil and pressure oil drain holes C to ensure the timely discharge of the leaked lubricating oil and pressure oil.

[0015] The intermediate rotating shaft 1 is provided with a pressure oil and lubricating oil inlet groove, a pressure oil outlet hole D, a first lubricating oil outlet hole E, and a second lubricating oil outlet hole F.

[0016] The intermediate rotating shaft 1 is radially and uniformly provided with pressure equalizing grooves G, such as Figure 1 at X as shown in Figure 2 the figure, which can make the radial pressure distribution uniform, reduce the hydraulic clamping force, improve the centering property, and reduce the leakage of pressure oil.

[0017] The spacer sleeve 6 is provided with through holes, and the housing 5 is provided with a pressure oil inlet hole B and a lubricating oil inlet hole A. The lubricating oil inlet hole A and the pressure oil inlet hole B are aligned with the holes on the spacer sleeve 6.

[0018] The first deep groove ball bearing 4 and the second deep groove ball bearing 9 are fixed on the housing 5 by a first hole retaining ring 8, a second hole retaining ring 14, and a shaft retaining ring 11; the pressure plate 10 is fixed on the housing 5 by hexagon socket head cap screws two 18, and the inner stop holds the second deep groove ball bearing 9 in place.

[0019] The intermediate rotating shaft 1 is fixed on the high-speed shaft of the press by external hexagon screws, and a first sealing ring 15 and a second sealing ring 16 are used to ensure no leakage between the high-speed shaft and the intermediate rotating shaft 1.

[0020] The working principle of the present invention:

[0021] Lubricating oil and pressure oil enter the inside of the rotary joint through the lubricating oil inlet hole A and the pressure oil inlet hole B on the housing 5, then pass through the through holes on the spacer sleeve 6, enter the intermediate rotating shaft 1 that rotates with the high-speed shaft, and then flow into the wet clutch from the pressure oil outlet hole D, the first lubricating oil outlet hole E, and the second lubricating oil outlet hole F on it, achieving the purpose of supplying oil to the rotating clutch. The intermediate rotating shaft 1 is provided with pressure equalizing grooves G, such as Figure 2 shown in the figure. The main function of the pressure equalizing grooves G is to make the radial pressure distribution uniform, reduce the hydraulic clamping force, improve the centering property, and be able to reduce the leakage of pressure oil. The intermediate rotating shaft 1 and the spacer sleeve 6 are in clearance fit, and the clearance seal method is used to ensure the stable oil pressure of the pressure oil and the lubricating oil. The clearance amount is ensured through tolerance fit, and the size of the clearance amount is the key to achieving pressure retention; the drain port on the housing 5 guides the leaked pressure oil and lubricating oil inside the rotary joint back to the fuel tank.

[0022] The structure of the present invention is simple, easy to process, convenient for installation and maintenance, can solve the problems of mutual leakage of pressure oil and lubricating oil in the rotary joint and inability to maintain pressure, and has good economy and reliability.

[0023] The above embodiments of the present invention are only illustrative and not exclusive. All changes within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A rotary joint for a wet clutch of a mechanical press, characterized in that: It includes an intermediate rotating shaft (1), a flange plate (2), a rotary sealing ring (3), a deep groove ball bearing I (4), a housing (5), a spacer sleeve (6), a deep groove ball bearing II (9) and a pressure plate (10). The deep groove ball bearing I (4) and the deep groove ball bearing II (9) are fixed on the housing (5) by a hole retaining ring I (8), a hole retaining ring II (14) and a shaft retaining ring (11); the pressure plate (10) is fixed on the housing (5) by an internal hexagonal socket head screw II (18), and the internal stop bore fixes the deep groove ball bearing II (9); the intermediate rotating shaft (1) is fixed on the housing (5) by the deep groove ball bearing I (4) and the deep groove ball bearing II (9) and realizes rotation. The flange plate (2) is fixed on the oil receiving box of the press by an internal hexagonal socket head screw and is connected to the housing (5) by an internal hexagonal socket head screw I (17); the spacer sleeve (6) is fixed on the housing (5) by a threaded cylindrical pin (12). There is a clearance fit between the intermediate rotating shaft (1) and the spacer sleeve (6). A combined sealing ring (13) is provided on the spacer sleeve (6). The rotary sealing ring (3) is fixed on the intermediate rotating shaft (1) by interference fit; pressure oil and lubricating oil inlet grooves, a pressure oil outlet hole (D), a lubricating oil outlet hole I (E) and a lubricating oil outlet hole II (F) are provided on the intermediate rotating shaft (1); pressure equalizing grooves (G) are uniformly distributed radially on the intermediate rotating shaft (1); lubricating oil and pressure oil enter the inside of the rotary joint through the lubricating oil inlet hole (A) and the pressure oil inlet hole (B) on the housing (5), then pass through the through holes on the spacer sleeve (6) and enter the intermediate rotating shaft (1) that rotates together with the high-speed shaft, and then flow into the wet clutch from the pressure oil outlet hole (D), the lubricating oil outlet hole I (E) and the lubricating oil outlet hole II (F) on it, achieving the purpose of supplying oil to the rotating clutch.

2. The rotary joint for a wet clutch of a mechanical press according to claim 1, wherein: The spacer sleeve (6) is provided with through holes. The housing (5) is provided with a pressure oil inlet hole (B) and a lubricating oil inlet hole (A). The lubricating oil inlet hole (A) and the pressure oil inlet hole (B) are aligned with the holes on the spacer sleeve (6).

3. A rotary joint for a wet clutch of a mechanical press according to claim 1 or 2, characterized in that: The intermediate rotating shaft (1) is fixed on the high-speed shaft of the press by an external hexagonal screw. A sealing ring I (15) and a sealing ring II (16) are used to ensure no leakage between the high-speed shaft and the intermediate rotating shaft (1).

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