A composite dual-turbine hydraulic torque converter

Abstract

This utility model relates to the field of hydraulic transmission equipment technology, specifically to a composite dual-turbine hydraulic torque converter, comprising a dual-turbine hydraulic torque converter body, an input shaft disposed at the input end of the dual-turbine hydraulic torque converter body, and an output shaft disposed at the output end of the dual-turbine hydraulic torque converter body. Both the input and output shafts are fitted with sealing sleeves, which are detachably mounted on the dual-turbine hydraulic torque converter body. A rigid clamping ring is disposed inside the sealing sleeve and fitted onto the corresponding shaft. An inner sealing ring is disposed between the rigid clamping ring and the front cylindrical body of the sealing sleeve. An inner bushing is disposed on the rear side of the rigid clamping ring. Inner fitting gaskets are disposed on both the inner and outer end faces of the inner bushing. The inner fitting gasket on the inner side fits onto the corresponding shaft, and the inner fitting gasket on the outer end face abuts against the rear side of the rigid clamping ring. This utility model has good sealing performance, achieving the effect of improving sealing reliability and ensuring stable equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission equipment technology, and more specifically, to a composite dual-turbine hydraulic torque converter. Background Technology

[0002] As a core power transmission component in construction machinery, heavy-duty vehicles, and other equipment, the sealing performance of the hydraulic oil inside the composite dual-turbine hydraulic torque converter directly determines the transmission efficiency and equipment reliability. During operation, the input and output shafts need to rotate continuously at high speeds (up to 1500-3000 r / min), and the hydraulic oil inside the torque converter is under high pressure (usually 2-4 MPa). If the seal at the connection between the shaft and the torque converter body fails, it will lead to hydraulic oil leakage, which will not only reduce the output torque and transmission efficiency of the torque converter, but may also cause dry friction damage to core components such as the pump wheel and turbine due to insufficient oil.

[0003] Existing torque converter shafts mostly use a single O-ring or lip seal. This type of sealing structure relies on a single point of contact between the rubber component and the shaft. After long-term high-speed rotation, the rubber is prone to wear and aging, resulting in loss of elasticity and an increase in the sealing gap. Especially when the torque converter starts or stops or the load fluctuates, the axial movement of the shaft will further damage the sealing contact surface, and the hydraulic oil leakage rate is as high as 5%-8%, requiring frequent oil replenishment, which seriously affects the normal operation of the equipment.

[0004] Furthermore, traditional sealing structures are often integrated with the torque converter body or fixed to the shaft by multiple bolts. Replacing the seals requires disassembling the transmission connections of the input and output shafts, and even partially disassembling the torque converter body, resulting in maintenance sessions lasting 2-3 hours. Moreover, disassembly can easily damage the shaft surface or sealing grooves, further degrading sealing performance and increasing equipment maintenance costs and downtime. Therefore, we propose a composite dual-turbine hydraulic torque converter. Utility Model Content

[0005] The purpose of this invention is to provide a composite dual-turbine hydraulic torque converter to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A composite dual-turbine hydraulic torque converter includes a dual-turbine hydraulic torque converter body, an input shaft disposed at the input end of the dual-turbine hydraulic torque converter body, and an output shaft disposed at the output end of the dual-turbine hydraulic torque converter body. Both the input shaft and the output shaft are fitted with sealing sleeves, which are detachably mounted on the dual-turbine hydraulic torque converter body. A rigid clamping ring is disposed inside the sealing sleeve and fitted onto the corresponding shaft. An inner sealing ring is disposed between the rigid clamping ring and the front cylindrical body of the sealing sleeve. An inner bushing is disposed on the rear side of the rigid clamping ring. Inner fitting gaskets are disposed on both the inner and outer end faces of the inner bushing. The inner fitting gasket on the inner side fits onto the corresponding shaft, and the inner fitting gasket on the outer end face abuts against the rear side of the rigid clamping ring.

[0008] Preferably, a through-shaft hole is provided at the center of the front side of the sealing sleeve, and the input shaft and the output shaft pass through the corresponding through-shaft hole.

[0009] Preferably, a fixing ring is fixedly installed on the rear end of the sealing sleeve, and the fixing ring is detachably installed on the side of the housing of the dual-turbine hydraulic torque converter body;

[0010] This feature facilitates the installation and removal of the sealing sleeve, and further makes it easier to disassemble and replace the components inside the sealing sleeve.

[0011] Preferably, a sealing gasket is provided between the retaining ring and the housing of the dual-turbine hydraulic torque converter body, and the retaining ring is pressed against the sealing gasket;

[0012] This feature improves the sealing effect between the retaining ring and the body of the dual-turbine hydraulic torque converter, making leakage less likely.

[0013] Preferably, an annular rotating sleeve is embedded in the through-shaft hole, and the annular rotating sleeve is fitted onto the corresponding input shaft and output shaft.

[0014] Preferably, the two discs of the annular rotating sleeve are located on the inner and outer sides of the front plate of the sealing sleeve, respectively, and multiple springs are provided between the rear side of the inner bushing and the housing of the dual-turbine hydraulic torque converter body.

[0015] Preferably, a threaded ring concentrically arranged with the through-shaft hole is fixedly installed on the front side of the sealing sleeve, and an outer sealing ring is embedded in the threaded ring. The outer sealing ring is sleeved on the corresponding input shaft and output shaft.

[0016] This setting can further improve the sealing effect.

[0017] Preferably, a threaded end cap is threadedly connected to the threaded ring. The threaded end cap is used to limit the outer sealing ring inside the threaded ring. A through hole is provided at the center of the threaded end cap, and the input shaft and the output shaft pass through the corresponding through hole.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, through the setting of a rigid compression ring, inner sealing ring, inner bushing, and inner fitting gasket inside the sealing sleeve, forms a first seal with the rigid compression ring. The inner fitting gaskets on both sides of the inner bushing respectively fit the shaft body and the rigid compression ring to form a second seal. Combined with the sealing gasket between the sealing sleeve and the torque converter body, it achieves multi-layer synergistic sealing, replacing the traditional single-point sealing of a single O-ring or lip seal. This significantly reduces the hydraulic oil leakage rate, avoids the decrease in transmission efficiency and damage to core components caused by leakage, and achieves the effect of improving sealing reliability and ensuring stable operation of equipment.

[0020] 2. This utility model features a detachable sealing sleeve with a fixed ring, a threaded ring, and a threaded end cap. The sealing sleeve can be removed by disassembling the fixed ring, allowing for the replacement of the internal seals. The outer sealing ring can be quickly replaced by unscrewing the threaded end cap. This eliminates the need to disassemble the input shaft, output shaft transmission connectors, or torque converter body, replacing the complex disassembly process of traditional integrated sealing structures. This simplifies maintenance operations and reduces operating costs and downtime.

[0021] 3. This utility model, through the setting of an inner bushing rear spring, an annular rotating sleeve and an inner fitting pad, provides continuous elastic pressure to the inner bushing, so that the inner fitting pad fits tightly against the shaft, compensating for the radial runout and minor errors caused by wear or high-speed rotation of the shaft. The annular rotating sleeve reduces the direct friction between the shaft and the sealing sleeve, avoiding excessive wear or leakage caused by shaft errors in traditional seals, thereby enhancing the adaptability of the sealing structure and extending the service life of the sealing components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0025] Figure 4 This is the second partial structural schematic diagram of the present utility model;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Dual-turbine hydraulic torque converter main body; 10. Input shaft; 11. Output shaft;

[0028] 2. Sealing sleeve; 20. Through-shaft hole; 201. Retaining ring; 202. Sealing gasket; 21. Annular swivel; 22. Inner sealing ring; 23. Rigid clamping ring; 24. Inner bushing; 241. Inner fitting gasket; 25. Spring; 26. Threaded ring; 27. Outer sealing ring; 28. Threaded end cap; 281. Through hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please see Figures 1-4 This utility model provides a technical solution: a composite dual-turbine hydraulic torque converter, including a dual-turbine hydraulic torque converter body 1, an input shaft 10 disposed at the input end of the dual-turbine hydraulic torque converter body 1, and an output shaft 11 disposed at the output end of the dual-turbine hydraulic torque converter body 1. Both the input shaft 10 and the output shaft 11 are fitted with sealing sleeves 2. The sealing sleeves 2 are detachably installed on the dual-turbine hydraulic torque converter body 1, providing an independent sealing space at the connection between the shaft and the body, separating the sealing components from the core transmission components of the torque converter, avoiding the impact of sealing failure on the operation of the internal pump wheel and turbine, and ensuring the overall transmission stability of the torque converter.

[0032] In this embodiment, a rigid clamping ring 23 is provided inside the sealing sleeve 2 and is fitted onto the corresponding shaft. An inner sealing ring 22 is provided between the rigid clamping ring 23 and the front cylinder of the sealing sleeve 2. An inner bushing 24 is provided on the rear side of the rigid clamping ring 23. An inner fitting pad 241 is provided on both the inner side and the outer end face of the inner bushing 24. The inner fitting pad 241 on the inner side fits onto the corresponding shaft, and the inner fitting pad 241 on the outer end face abuts against the rear side of the rigid clamping ring 23. The inner sealing ring 22 forms a first seal between the rigid clamping ring 23 and the sealing sleeve 2. The inner fitting pad 241 on the inner side of the inner bushing 24 fits onto the shaft, and the inner fitting pad 241 on the outer end face abuts against the rigid clamping ring 23 to form a second seal, so that the shaft part achieves double sealing, which greatly reduces the risk of hydraulic oil leakage and avoids the decrease in transmission efficiency caused by leakage.

[0033] like Figures 1-3 As shown, a through-shaft hole 20 is provided at the center of the front side of the sealing sleeve 2. The input shaft 10 and the output shaft 11 pass through the corresponding through-shaft hole 20. An annular rotating sleeve 21 is embedded in the through-shaft hole 20. The annular rotating sleeve 21 can rotate and is fitted on the corresponding input shaft 10 and output shaft 11 and rotatably connected to the shaft body. The two discs of the annular rotating sleeve 21 are located on the inner and outer sides of the front plate of the sealing sleeve 2, respectively. The annular rotating sleeve 21 isolates the shaft body from the sealing sleeve 2, so that the shaft body only rubs against the annular rotating sleeve 21 when rotating at high speed, reducing the wear of the sealing sleeve 2, extending the service life of the sealing sleeve 2, and ensuring smooth rotation of the shaft body.

[0034] like Figure 2 and Figure 3 As shown, a retaining ring 201 is fixedly installed on the rear end of the cylinder of the sealing sleeve 2. The retaining ring 201 is detachably installed on the side of the housing of the dual-turbine hydraulic torque converter body 1 by multiple fastening screws. The sealing sleeve 2 can be removed by removing the retaining ring 201 without disassembling the shaft transmission connection, making the replacement of internal components of the sealing sleeve 2 more convenient and shortening the maintenance time.

[0035] In this embodiment, a sealing gasket 202 is provided between the fixed ring 201 and the housing of the dual-turbine hydraulic torque converter body 1. The fixed ring 201 is pressed onto the sealing gasket 202 to fill the gap between the fixed ring 201 and the housing, preventing hydraulic oil from leaking from the connection between the fixed ring 201 and the housing, further improving the overall sealing effect, and ensuring stable hydraulic oil pressure inside the torque converter.

[0036] Specifically, multiple springs 25 are provided between the rear side of the inner bushing 24 and the housing of the dual-turbine hydraulic torque converter body 1. The springs 25 apply continuous elastic pressure to the bushing 24, so that the inner fitting gasket 241 always fits tightly against the shaft and the rigid clamping ring 23, compensating for the radial runout of the shaft caused by wear or high-speed rotation, avoiding the increase of the sealing gap, and maintaining the long-term stability of the sealing effect.

[0037] Furthermore, a threaded ring 26 concentrically arranged with the through-shaft hole 20 is fixedly installed on the front side of the sealing sleeve 2. An outer sealing ring 27 is embedded in the threaded ring 26. The outer sealing ring 27 is fitted on the corresponding input shaft 10 and output shaft 11. The outer sealing ring 27 forms a third seal on the shaft. A threaded end cap 28 is threadedly connected to the threaded ring 26. The threaded end cap 28 is used to limit the outer sealing ring 27 inside the threaded ring 26. The threaded end cap 28 is fixed to the outside of the outer sealing ring 27 by threads, limiting it inside the threaded ring 26, preventing the outer sealing ring 27 from shifting due to shaft rotation, and further enhancing the reliability of shaft sealing.

[0038] In addition, a through hole 281 is provided at the center of the threaded end cap 28. The input shaft 10 and the output shaft 11 pass through the corresponding through hole 281. The threaded end cap 28 does not affect the normal rotation of the shaft, but also plays an auxiliary guiding role for the shaft, avoiding radial displacement when the shaft rotates at high speed, ensuring that the shaft and the sealing component fit tightly and maintain the sealing effect.

[0039] In use, the composite dual-turbine hydraulic torque converter of this utility model is operated by inserting the annular rotating sleeve 21 into the through-shaft hole 20 of the sealing sleeve 2, and then sequentially placing the inner sealing ring 22, the rigid clamping ring 23, and the inner bushing 24 with the inner fitting gasket 241 onto the input shaft 10 and the output shaft 11, so that the spring 25 on the rear side of the inner bushing 24 presses against the housing of the dual-turbine hydraulic torque converter body 1. The sealing sleeve 2 is then placed on the shaft body and fixed to the housing of the body 1 by the fastening screw of the fixing ring 201, ensuring that the fixing ring 201 presses against the sealing gasket 202. Finally, the outer sealing ring 27 is inserted into the threaded ring 26, and the threaded end cap 28 is screwed on to complete the sealing assembly.

[0040] When the equipment is started, the input shaft 10 receives power and drives the pump wheel inside the main body 1 to rotate. The output shaft 11 transmits power to the load. When the shaft rotates at high speed, the annular sleeve 21 isolates the shaft from the sealing sleeve 2 to reduce wear. The inner sealing ring 22, the inner fitting gasket 241, and the outer sealing ring 27 form a triple seal. The spring 25 compensates for the radial runout of the shaft, ensuring that the hydraulic oil does not leak and maintaining the transmission efficiency.

[0041] When maintenance is required, the outer sealing ring 27 can be replaced by unscrewing the threaded end cap 28; the inner sealing ring 22 and the rigid clamping ring 23 can be replaced by removing the fastening screws of the retaining ring 201 and removing the sealing sleeve 2. There is no need to disassemble the shaft transmission connecting parts. After maintenance, the parts can be reset according to the installation steps and can continue to be used.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A compound type dual turbine hydraulic torque converter, comprising a dual turbine hydraulic torque converter main body (1), an input shaft (10) arranged at an input end of the dual turbine hydraulic torque converter main body (1), and an output shaft (11) arranged at an output end of the dual turbine hydraulic torque converter main body (1), characterized in that: Both the input shaft (10) and the output shaft (11) are fitted with sealing sleeves (2). The sealing sleeves (2) are detachably installed on the main body (1) of the dual-turbine hydraulic torque converter. A rigid clamping ring (23) is provided inside the sealing sleeve (2) and fitted on the corresponding shaft. An inner sealing ring (22) is provided between the rigid clamping ring (23) and the front cylinder of the sealing sleeve (2). An inner bushing (24) is provided on the rear side of the rigid clamping ring (23). An inner fitting pad (241) is provided on both the inner side and the outer end face of the inner bushing (24). The inner fitting pad (241) on the inner side is fitted on the corresponding shaft, and the inner fitting pad (241) on the outer end face abuts against the rear side of the rigid clamping ring (23).

2. The compound twin-turbine hydraulic torque converter of claim 1, wherein: The sealing sleeve (2) has a through hole (20) at the center of the front side, and the input shaft (10) and the output shaft (11) pass through the corresponding through hole (20).

3. The compound twin-turbine hydraulic torque converter of claim 1, wherein: A fixing ring (201) is fixedly installed on the rear end cylinder of the sealing sleeve (2), and the fixing ring (201) is detachably installed on the side of the housing of the dual-turbine hydraulic torque converter body (1).

4. The compound twin-turbine hydraulic torque converter of claim 3, wherein: A sealing gasket (202) is provided between the fixed ring (201) and the housing of the dual-turbine hydraulic torque converter body (1), and the fixed ring (201) is pressed against the sealing gasket (202).

5. The compound twin-turbine hydraulic torque converter of claim 2, wherein: An annular rotating sleeve (21) is embedded in the through-shaft hole (20), and the annular rotating sleeve (21) is fitted on the corresponding input shaft (10) and output shaft (11).

6. The compound twin-turbine hydraulic torque converter of claim 5, wherein: The two discs of the annular rotating sleeve (21) are located on the inner and outer sides of the front plate of the sealing sleeve (2), and multiple springs (25) are provided between the rear side of the inner bushing (24) and the housing of the dual-turbine hydraulic torque converter body (1).

7. The compound twin-turbine hydraulic torque converter of claim 2, wherein: A threaded ring (26) concentrically arranged with the through-shaft hole (20) is fixedly installed on the front side of the sealing sleeve (2). An outer sealing ring (27) is embedded in the threaded ring (26). The outer sealing ring (27) is sleeved on the corresponding input shaft (10) and output shaft (11).

8. The compound twin-turbine hydraulic torque converter of claim 7, wherein: A threaded end cap (28) is threadedly connected to the threaded ring (26). The threaded end cap (28) is used to limit the outer sealing ring (27) inside the threaded ring (26). A through hole (281) is provided at the center of the threaded end cap (28). The input shaft (10) and the output shaft (11) pass through the corresponding through hole (281).

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