Silicone oil clutch and method of mounting same

Abstract

This invention provides a silicone oil clutch, comprising a housing, a rotating shaft, a pulley, a front cover, and an electromagnetic coil. The rotating shaft is rotatably mounted on the housing. The pulley is movably connected to the rotating shaft through a shaft hole. The front cover is fixedly mounted on the upper end face of the pulley, forming a closed cavity between the pulley and the pulley. A driven plate, a distribution plate, and a valve plate are sequentially installed from top to bottom within this cavity. The upper surface of the driven plate and the lower surface of the front cover are each provided with multiple concentric annular protrusions. An annular groove is formed between adjacent annular protrusions. The annular protrusions of the front cover and the driven plate intersect and enter into each other's annular grooves. A flange is screwed to the center of the driven plate. The flange has a manual adjustment mechanism to control the gap between the driven plate and the flange. The flange is fixedly connected to the rotating shaft. This invention allows for adjustment and locking of the end-face gap value during assembly, thereby achieving precise control of the end-face gap torque.

Description

Technical Field

[0001] This invention relates to the field of silicone oil clutch technology, specifically to a silicone oil clutch and its installation method. Background Technology

[0002] Silicone oil clutches use silicone oil as the transmission medium, such as... Figure 1 As shown, after the driving and driven plates of the silicone oil clutch are installed and mated, torque can be transmitted through silicone oil. The torque transmitted by the silicone oil clutch is calculated in two parts: one is the torque transmitted by the clearance between the cylindrical surfaces of the labyrinth groove; the other is the torque transmitted by the clearance between the end faces of the labyrinth groove. The torque transmitted by the labyrinth groove friction pair is the sum of the torque T1 transmitted by all end face clearances and the torque T2 transmitted by the cylindrical surface clearance.

[0003] Therefore, a larger oil film thickness h results in a smaller end-face clearance torque, while a smaller oil film thickness h results in a larger end-face clearance torque. Thus, controlling the oil film thickness has a significant impact on torque.

[0004] In existing technologies, most clearance dimensions are achieved through assembly. Once assembled, the product's torque cannot be adjusted. On the other hand, there are inherent errors (positional errors, dimensional errors, and cumulative errors) during the assembly process, and tool and gauge errors during the measurement process. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a silicone oil clutch that can precisely control the torque of the end face gap, and to provide an installation method for the silicone oil clutch.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a silicone oil clutch, comprising a housing, a rotating shaft, a pulley, a front cover, and an electromagnetic coil. The rotating shaft is rotatably mounted on the housing. The pulley is movably connected to the rotating shaft through a shaft hole. The front cover is fixedly mounted on the upper end face of the pulley and forms a closed cavity with the pulley. A driven plate, a distribution plate, and a valve plate are sequentially installed from top to bottom in the cavity. The upper surface of the driven plate and the lower surface of the front cover are provided with multiple concentric annular protrusions. An annular groove is formed between two adjacent annular protrusions. The annular protrusions of the front cover and the annular protrusions of the driven plate intersect each other and enter into the annular grooves of each other. A flange is installed in the middle of the driven plate by screws. The flange is provided with a manual adjustment mechanism to control the gap between the driven plate and the flange. The flange is fixedly connected to the rotating shaft.

[0007] The beneficial effects of the present invention are as follows: Since a flange is installed in the middle of the driven plate by screws, and the flange is fixedly connected to the rotating shaft, the flange is provided with a manual adjustment mechanism to control the gap between the driven plate and the flange, thereby changing the gap between the driven plate and the front cover. In this way, the end face gap value - oil film thickness h can be adjusted and locked during the assembly process, thereby achieving precise control of the clutch end face gap torque.

[0008] In one embodiment, the manual adjustment mechanism includes two adjusting screws, four lower inclined wedges, and four upper inclined wedges located on the four lower inclined wedges. Each adjusting screw includes a sprocket and a forward / reverse threaded screw. Two lower inclined wedges are mounted at both ends of the same adjusting screw. When the adjusting screw is rotated, the two lower inclined wedges on the same adjusting screw move in opposite directions along the adjusting screw, causing the upper inclined wedges that cooperate with the lower inclined wedges to move upward or downward accordingly. The sprockets of the two adjusting screws are connected by a chain drive. During operation, rotating any one adjusting screw allows the four lower and four upper inclined wedges to move synchronously, ensuring that the gap between the driven plate and the flange remains uniform.

[0009] In one embodiment, the end face of the sprocket is provided with an internal hexagonal blind hole.

[0010] In one embodiment, the flange includes a rectangular portion and a sleeve portion located in the middle of the rectangular portion, the manual adjustment mechanism is mounted on the rectangular portion, and the sleeve portion of the flange is fitted onto the rotating shaft and fixed thereon.

[0011] In one embodiment, the rectangular portion of the flange is provided with four grooves for installing four lower inclined wedges and four upper inclined wedges.

[0012] The present invention relates to the installation method of the above-mentioned silicone oil clutch, which includes the following steps:

[0013] S1. Assemble the pulley, valve plate, and oil distribution plate onto the rotating shaft in sequence;

[0014] S2. Assemble the flange onto the shaft bearing;

[0015] S3. Pre-fix the driven plate to the flange with screws;

[0016] S4. Use a gauge to measure the distance L1 from the annular protrusion end face of the front cover to the front cover mounting surface, and use a gauge to measure the distance L2 from the annular groove of the driven plate to the pulley mounting surface. Subtract L1 from L2 to obtain the end face clearance value - oil film thickness h.

[0017] S5. If the oil film thickness h does not meet the torque design requirements, the gap between the driven plate and the flange can be changed by adjusting the manual adjustment mechanism on the flange, thereby changing the distance L2 from the annular groove of the driven plate to the pulley mounting surface, and thus obtaining the ideal oil film thickness h. After that, the driven plate and the flange are locked with screws and silicone oil medium is injected.

[0018] S6. Place the front cover over the pulley and tighten it with bolts to complete the assembly of the silicone oil clutch. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the combined structure of the driving and driven discs of a silicone oil clutch.

[0020] Figure 2 This is a cross-sectional view of the silicone oil clutch water pump in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0022] Figure 4 This is a schematic diagram of the flange three-dimensional structure in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the flange explosion structure in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the flange planar structure in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 Schematic diagram of the XX-line cross-sectional structure in the diagram;

[0026] The attached figures are labeled as follows:

[0027] 1. Impeller; 2. Water seal; 3. Housing; 4. Pump seal ring; 5. Signal wheel; 6. Speed ​​sensor; 7. Shaft; 8. Excitation coil; 9. Pulley; 10. Silicone oil medium; 11. Valve plate; 12. Oil distribution plate; 13. Flange; 14. Screw; 15. Driven plate; 16. Front cover; 17. Clutch seal ring; 18. Bolt; 131. Rectangular part; 132. Sleeve part; 133. Adjusting screw; 134. Lower inclined wedge; 135. Upper inclined wedge; 136. Chain. Detailed Implementation

[0028] To facilitate understanding by those skilled in the art, the invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the invention.

[0029] It should be noted in advance that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly in this invention. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] Figure 2 The diagram shows a water pump employing a silicone oil clutch, comprising an impeller 1, a water seal 2, a housing 3, a water pump sealing ring 4, a signal wheel 5, a speed sensor 6, a rotating shaft 7, an excitation coil 8, a pulley 9, a silicone oil medium 10, a valve plate 11, an oil distribution plate 12, a flange 13, screws 14, a driven plate 15, a front cover 16, a clutch sealing ring 17, and bolts 18. The rotating shaft 7 is a shaft-connected bearing, rotatably mounted on the housing 3, with its lower end fixedly connected to the impeller 1. The pulley 9 is movably connected to the rotating shaft 7 through a shaft hole, and the front cover 16 is fixedly mounted on the upper end face of the pulley 9 and connected to the pulley 9. A closed cavity is formed between the two parts, and the driven plate 15, the oil distribution plate 12, and the valve plate 11 are installed sequentially from top to bottom in this cavity. The upper surface of the driven plate 15 and the lower surface of the front cover 16 are both provided with multiple concentric annular protrusions. An annular groove is formed between two adjacent annular protrusions. The annular protrusions of the front cover 16 and the annular protrusions of the driven plate 15 intersect and enter into each other's annular grooves. A flange 13 is installed in the middle of the driven plate 15 by screws 14. The flange 13 is provided with a manual adjustment mechanism to control the gap between the driven plate 15 and the flange 13. The flange 13 is fixedly connected to the upper end of the rotating shaft 7. In this embodiment, the front cover 16 serves as the driving plate of the clutch, and the driven plate 15 serves as the driven plate of the clutch.

[0031] like Figures 4 to 7As shown, the flange 13 includes a rectangular portion 131 and a sleeve portion 132 located in the middle of the rectangular portion 131. A manual adjustment mechanism is installed on the rectangular portion 131. The sleeve portion 132 of the flange 13 is fitted onto the rotating shaft 7 and fixed. The manual adjustment mechanism in this embodiment includes two adjusting screws 133, four lower inclined wedges 134, and four upper inclined wedges 135 located on the four lower inclined wedges 134 respectively. The rectangular portion 131 of the flange 13 is provided with four grooves for installing the four lower inclined wedges 134 and the four upper inclined wedges 135. The adjusting screw 133 includes a sprocket and a forward / reverse threaded screw. The end face of the sprocket has an internal hexagonal blind hole. Two downward-sloping wedges 134 are installed at both ends of the same adjusting screw 133. When the adjusting screw 133 is rotated, the two downward-sloping wedges 134 located on the same adjusting screw 133 will move towards each other or in opposite directions along the adjusting screw 133, thereby causing the upward-sloping wedges 135 that cooperate with the downward-sloping wedges 134 to move upward or downward accordingly. The sprockets of the two adjusting screws 133 are connected by a chain 136. During operation, by rotating any one of the adjusting screws 133, the four downward-sloping wedges 134 and the four upward-sloping wedges 135 can be moved synchronously, thereby ensuring that the gap between the driven plate 15 and the flange 13 is always uniform.

[0032] This embodiment of the installation method for the silicone oil clutch includes the following steps:

[0033] S1. Install the pulley 9, valve plate 11 and oil distribution plate 12 sequentially on the shaft connecting bearing;

[0034] S2. Assemble flange 13 onto the shaft bearing;

[0035] S3. Pre-fix the driven plate 15 to the flange 13 using screws 14;

[0036] S4. For example Figure 3 As shown, the distance L1 from the annular protrusion end face of the front cover 16 to the mounting surface of the front cover 16 is measured with a gauge, and the distance L2 from the annular groove of the driven plate 15 to the mounting surface of the pulley 9 is measured with a gauge. The end face clearance value—oil film thickness h—is obtained by subtracting L1 from L2.

[0037] S5. If the oil film thickness h does not meet the torque design requirements, the gap between the driven plate 15 and the flange 13 can be changed by adjusting the manual adjustment mechanism on the flange 13, thereby changing the distance L2 from the annular groove of the driven plate 15 to the mounting surface of the pulley 9, and thus obtaining the ideal oil film thickness h. Then, the driven plate 15 and the flange 13 are locked with screws 14 and silicone oil medium 10 is injected.

[0038] S6. Place the front cover 16 over the pulley 9 and tighten it with bolts 18 to complete the assembly of the silicone oil clutch.

[0039] Since a flange 13 is installed in the middle of the driven plate 15 by screws 14, and the flange 13 is fixedly connected to the rotating shaft 7, the flange 13 is provided with a manual adjustment mechanism to control the gap between the driven plate 15 and the flange 13, thereby changing the gap between the driven plate 15 and the front cover 16. In this way, the end face gap value - oil film thickness h can be adjusted and locked during the assembly process, thereby achieving precise control of the clutch end face gap torque.

[0040] To facilitate understanding by those skilled in the art of the improvements made by the invention over the prior art, some of the accompanying drawings and descriptions have been simplified. The above embodiments are preferred implementations of the invention. In addition, the invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the technical solution are within the scope of protection of the invention.

Claims

1. A silicone oil clutch, comprising a housing (3), a rotating shaft (7), a pulley (9), a front cover (16), and an electromagnetic coil, wherein the rotating shaft (7) is rotatably mounted on the housing (3); The pulley (9) is movably connected to the rotating shaft (7) through the shaft hole. The front cover (16) is fixedly installed on the upper end face of the pulley (9) and forms a closed cavity with the pulley (9). The driven plate (15), the oil distribution plate (12) and the valve plate (11) are installed in the cavity from top to bottom. The upper surface of the driven plate (15) and the lower surface of the front cover (16) are provided with multiple concentric annular protrusions. An annular groove is formed between two adjacent annular protrusions. The annular protrusions of the front cover (16) and the annular protrusions of the driven plate (15) intersect each other and enter into the annular groove of the other. Its features are: A flange (13) is mounted on the middle part of the driven plate (15) by screws (14). The flange (13) is provided with a manual adjustment mechanism to control the gap between the driven plate (15) and the flange (13). The flange (13) is fixedly connected to the rotating shaft (7).

2. The silicone oil clutch according to claim 1, characterized in that: The manual adjustment mechanism includes two adjusting screws (133), four lower inclined wedges (134), and four upper inclined wedges (135) located on the four lower inclined wedges (134). The adjusting screw (133) includes a sprocket and a forward and reverse screw. Every two lower inclined wedges (134) are installed at both ends of the same adjusting screw (133). When the adjusting screw (133) is rotated, the two lower inclined wedges (134) located on the same adjusting screw (133) will move towards each other or in opposite directions along the adjusting screw (133), thereby causing the upper inclined wedges (135) that cooperate with the lower inclined wedges (134) to move upward or downward accordingly. The sprockets of the two adjusting screws (133) are connected by a chain (136).

3. The silicone oil clutch according to claim 2, characterized in that: The end face of the sprocket is provided with an internal hexagonal blind hole.

4. The silicone oil clutch according to claim 2, characterized in that: The flange (13) includes a rectangular portion (131) and a sleeve portion (132) located in the middle of the rectangular portion (131). The manual adjustment mechanism is installed on the rectangular portion (131), and the sleeve portion (132) of the flange (13) is fitted onto the rotating shaft (7) and fixed thereon.

5. The silicone oil clutch according to claim 3, characterized in that: The rectangular portion (131) of the flange (13) is provided with four grooves for installing four lower inclined wedges (134) and four upper inclined wedges (135).

6. A method for installing the silicone oil clutch according to any one of claims 1 to 5, characterized in that, Includes the following steps: S1. Install the pulley (9), valve plate (11) and oil distribution plate (12) on the rotating shaft (7) in sequence; S2. Assemble the flange (13) onto the shaft bearing; S3. The driven plate (15) is pre-fixed to the flange (13) with screws (14); S4. Use a gauge to measure the distance L1 from the annular protrusion end face of the front cover (16) to the mounting surface of the front cover (16), and use a gauge to measure the distance L2 from the annular groove of the driven plate (15) to the mounting surface of the pulley (9). Subtract L1 from L2 to obtain the end face gap value - oil film thickness h. S5. If the oil film thickness h does not meet the torque design requirements, the gap between the driven plate (15) and the flange (13) can be changed by adjusting the manual adjustment mechanism on the flange (13), thereby changing the distance L2 from the annular groove of the driven plate (15) to the mounting surface of the pulley (9), and thus obtaining the ideal oil film thickness h. Then, the driven plate (15) and the flange (13) are locked with screws (14) and silicone oil medium (10) is injected. S6. Place the front cover (16) over the pulley (9) and tighten it with bolts (18) to complete the assembly of the silicone oil clutch.

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