A pilot wheel and a torque converter

Abstract

The present invention relates to the technical field of hydraulic torque converters, and specifically discloses a stator and a hydraulic torque converter. The stator includes an inner ring, an outer ring, a blade adjusting assembly, and a first driving member. The outer ring is coaxially sleeved on the inner ring and is spaced from the inner ring; the blade adjusting assembly is arranged between the inner ring and the outer ring. The blade adjusting assembly includes a first fixed blade, a first telescopic blade, and a first elastic member. One end of the first fixed blade is fixedly connected to the outer ring. The first telescopic blade is arranged on the first fixed blade and is slidably connected to the first fixed blade. The first elastic member drives the first telescopic blade to move in the direction of extending into the first fixed blade; the first driver drives the first telescopic blade to move in the direction of extending out of the first fixed blade. When the stator works, the first driver and the first elastic member can work together to control the extension amount of the first telescopic blade and adjust the flow rate during the operation of the hydraulic torque converter. Thereby, the hydraulic torque converter can be used in different working gears.

Description

Technical Field

[0001] The present invention relates to the technical field of torque converters, and particularly to a stator and a torque converter. Background Art

[0002] Due to the stepless speed change and torque conversion functions of the torque converter, it is widely used as a transmission device between various prime movers and working machines. For example, it is used as a transmission device for road transportation vehicles (cars, buses, trucks, tanks, etc.) and railway transportation vehicles (main line diesel locomotives, high-speed trains, shunting locomotives, etc.). In addition, it is also applied in construction machinery (cranes, excavators, loaders, bulldozers, tractors, etc.), mining machinery (oil drills, drilling machines, crushers, etc.) and large ships. Therefore, the torque converter has great practical value in modern industry. Especially for the recently developed hydraulic reversing shunting locomotive, which can change the running direction of the locomotive without stopping, this advantage is unparalleled by electric drive and mechanical drive diesel locomotives.

[0003] As Figure 1 shown, the torque converter has three working wheels, namely the pump impeller 300, the turbine 200 and the stator 100. Among them, the structures of the pump impeller 300 and the turbine 200 are basically the same as those of the hydraulic coupling; the stator 100 is located between the pump impeller 300 and the turbine 200, and maintains a certain axial clearance from the pump impeller 300 and the turbine 200, and is fixed to the transmission housing through the stator 100 fixing sleeve. When the engine runs, it drives the housing of the torque converter and the pump impeller 300 to rotate together. The hydraulic oil in the pump impeller 300 rushes from the outer edge of the pump impeller 300 blades towards the turbine 200 under the action of centrifugal force, and flows along the turbine 200 blades towards the stator 100, and then flows back into the inner edge of the pump impeller 300 blades through the stator 100 blades, forming a circulating liquid flow. The function of the stator 100 is to change the output torque on the turbine 200. Since the hydraulic oil flowing from the lower edge of the turbine 200 blades towards the stator 100 still has a relatively large impact force, as long as the blades of the pump impeller 300, the turbine 200 and the stator 100 are designed into a certain shape and angle, the above-mentioned impact force can be used to increase the output torque of the turbine 200.

[0004] However, the conventional torque converter cannot adjust the output speed and torque of the output shaft. Once manufactured, it has its own corresponding output characteristics, which in turn leads to limited adjustment ability of the torque converter for the output speed and torque. Summary of the Invention

[0005] The purpose of the present invention is to provide a stator and a torque converter to solve the problem that in the related art, the torque converter cannot adjust the output speed and torque of the output shaft. Once manufactured, it has its own corresponding output characteristics, which in turn leads to limited adjustment ability of the torque converter for the output speed and torque.

[0006] On the one hand, the present invention provides a guide wheel, which includes:

[0007] An inner ring and an outer ring, the outer ring is coaxially sleeved on the inner ring and is spaced from the inner ring;

[0008] A blade adjustment assembly, the blade adjustment assembly is arranged between the inner ring and the outer ring, the blade adjustment assembly includes a first fixed blade, a first telescopic blade and a first elastic member, the first fixed blade is a tubular structure, one end of the first fixed blade is fixedly connected to the outer ring, the first telescopic blade is inserted into the first fixed blade from the other end of the first fixed blade and is slidably connected to the first fixed blade, and the first elastic member drives the first telescopic blade to move in the direction of extending into the first fixed blade;

[0009] A first driver, the first driver drives the first telescopic blade to move in the direction of extending out of the first fixed blade.

[0010] As a preferred technical solution of the guide wheel, the outer ring is provided with a first flow channel, and the first flow channel is communicated with the first fixed blade;

[0011] The first driver is a hydraulic pump, and the first driver is communicated with the first flow channel.

[0012] As a preferred technical solution of the guide wheel, the blade adjustment assembly further includes a second fixed blade, a second telescopic blade and a second elastic member, the second fixed blade is a tubular structure, one end of the second fixed blade is fixedly connected to the inner ring, the second telescopic blade is inserted into the second fixed blade from the other end of the second fixed blade and is slidably connected to the second fixed blade, and the second elastic member drives the second telescopic blade to move in the direction of extending into the second fixed blade;

[0013] The guide wheel further includes a second driver, and the second driver drives the second telescopic blade to move in the direction of extending out of the second fixed blade.

[0014] As a preferred technical solution of the guide wheel, the inner ring is provided with a second flow channel, and the second flow channel is communicated with the second fixed blade;

[0015] The second driver is a hydraulic pump, and the second driver is communicated with the second flow channel.

[0016] As a preferred technical solution of the guide wheel, the first telescopic blade and the second telescopic blade are opposite, and the second telescopic blade and the first telescopic blade have a first state of abutting against each other and a second state of being separated from each other, and the first fixed blade and the second fixed blade are spaced apart.

[0017] As a preferred technical solution of the guide wheel, the telescopic directions of the first telescopic blade and the second telescopic blade are both the radial direction of the inner ring.

[0018] As a preferred technical solution of the guide wheel, a slot is provided on the side wall of the first telescopic blade opposite to the second telescopic blade, and a plug board is provided on the side wall of the second telescopic blade opposite to the first telescopic blade. When the first telescopic blade and the second telescopic blade are in the first state, the plug board and the slot are inserted into each other.

[0019] As a preferred technical solution of the guide wheel, the blade adjusting assembly further includes a connecting piece, and the connecting piece fixedly connects the first fixed blade and the second fixed blade.

[0020] As a preferred technical solution of the guide wheel, a plurality of blade adjusting assemblies are provided, and the plurality of blade adjusting assemblies are arranged at equal angular intervals around the circumferential wall of the inner ring.

[0021] On the other hand, the present invention provides a hydraulic torque converter, including the guide wheel in any of the above solutions.

[0022] The beneficial effects of the present invention are as follows:

[0023] The present invention provides a guide wheel and a hydraulic torque converter. The guide wheel includes an inner ring, an outer ring, a blade adjusting assembly and a first driving member. The outer ring is coaxially sleeved on the inner ring and is spaced from the inner ring. The blade adjusting assembly is arranged between the inner ring and the outer ring. The blade adjusting assembly includes a first fixed blade, a first telescopic blade and a first elastic member. The first fixed blade is a tubular structure. One end of the first fixed blade is fixedly connected to the outer ring. The first telescopic blade is inserted into the first fixed blade from the other end of the first fixed blade and is slidably connected to the first fixed blade. The first elastic member drives the first telescopic blade to move in the direction of extending into the first fixed blade. The first driver drives the first telescopic blade to move in the direction of extending out of the first fixed blade. When the guide wheel works, the extension amount of the first telescopic blade can be controlled through the coordinated work of the first driver and the first elastic member, thereby changing the size of the blade formed by the first fixed blade and the first telescopic blade, and further adjusting the flow rate during the operation of the hydraulic torque converter. Thus, the hydraulic torque converter can be used in different working gears. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a hydraulic torque converter in the prior art;

[0025] Figure 2 It is a cross-sectional view of the guide wheel in the embodiment of the present invention;

[0026] Figure 3 It is a partial schematic diagram of the guide wheel in the embodiment of the present invention (the first telescopic blade and the second telescopic blade are in the first state);

[0027] Figure 4 This is a partial schematic diagram of the guide wheel in the embodiment of the present invention (the first telescopic blade and the second telescopic blade are in the second state).

[0028] In the figure:

[0029] 100, guide wheel; 200, turbine; 300, pump wheel;

[0030] 1, outer ring; 11, first flow channel;

[0031] 2, inner ring; 21, second flow channel;

[0032] 3, blade adjustment assembly; 31, first fixed blade; 32, first telescopic blade; 33, first elastic member; 34, second fixed blade; 35, second telescopic blade; 36, second elastic member; 37, connecting member. Detailed implementation manners

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0037] This embodiment discloses a hydraulic torque converter. Without changing the rotatable turbine 200 and the pump wheel 300, by designing a stator 100 with adjustable blade sizes to change the flow rate of the hydraulic torque converter, and by adjusting the blade sizes, the flow rate of the hydraulic torque converter during operation is adjusted. Thus, the torque converter can be used in different working gears.

[0038] Such as Figures 2 to 4As shown in the figure, this embodiment provides a guide wheel. The guide wheel 100 includes an inner ring 2, an outer ring 1, a blade adjustment assembly 3, and a first drive member. The outer ring 1 is coaxially sleeved on the inner ring 2 and is spaced apart from the inner ring 2. The blade adjustment assembly 3 is disposed between the inner ring 2 and the outer ring 1. The blade adjustment assembly 3 includes a first fixed blade 31, a first telescopic blade 32, and a first elastic member 33. The first fixed blade 31 is a tubular structure. One end of the first fixed blade 31 is fixedly connected to the outer ring 1. The first telescopic blade 32 is inserted into the first fixed blade 31 from the other end of the first fixed blade 31 and is slidably connected to the first fixed blade 31. The first elastic member 33 drives the first telescopic blade 32 to move in the direction of extending into the first fixed blade 31. The first driver drives the first telescopic blade 32 to move in the direction of extending out of the first fixed blade 31. When the guide wheel 100 works, the first driver and the first elastic member 33 can work together to control the extension amount of the first telescopic blade 32 extending out of the first fixed blade 31, thereby changing the size of the blade formed by the first fixed blade 31 and the first telescopic blade 32, and adjusting the flow rate during the operation of the torque converter. Thus, the torque converter can be used in different working gears. Specifically, when it is necessary to increase the blade of the guide wheel 100, the first driver overcomes the elastic force of the first elastic member 33 to make the first telescopic blade 32 extend out of the first fixed blade 31. Furthermore, the first telescopic blade 32 can extend out of the first fixed blade 31 by any distance, thereby changing the size of the blade formed by the first fixed blade 31 and the first telescopic blade 32. When it is necessary to retract the first telescopic blade 32 into the first fixed blade 31, the driving force of the first driver is removed, and then the first elastic member 33 can drive the first telescopic blade 32 to retract into the first fixed blade 31. Specifically, the first elastic member 33 is a spiral spring. In other embodiments, the first elastic member 33 can also be elastic rubber, an elastic plate, etc.

[0039] Optionally, the outer ring 1 is provided with a first flow channel 11, and the first flow channel 11 is communicated with the first fixed blade 31. The first driver is a hydraulic pump, and the first driver is communicated with the first flow channel 11. In this embodiment, the liquid outlet of the first driver is communicated with the first flow channel 11, and the liquid inlet of the first driver is communicated with the liquid storage pot. The first driver pumps the working liquid in the liquid storage pot into the first flow channel 11. Then, the working liquid flows into the first fixed blade 31, and then the working liquid can drive the first telescopic blade 32 located in the first fixed blade 31 to extend out of the first fixed blade 31. In other embodiments, the first driver can also be an air pump.

[0040] Optionally, the vane adjustment assembly 3 further includes a second fixed vane 34, a second telescopic vane 35, and a second elastic member 36. The second fixed vane 34 is a tubular structure. One end of the second fixed vane 34 is fixedly connected to the inner ring 2. The second telescopic vane 35 is inserted into the second fixed vane 34 from the other end of the second fixed vane 34 and is slidably connected to the second fixed vane 34. The second elastic member 36 drives the second telescopic vane 35 to move in the direction of extending into the second fixed vane 34. The guide wheel 100 further includes a second driver, and the second driver drives the second telescopic vane 35 to move in the direction of extending out of the second fixed vane 34. In this embodiment, when it is necessary to increase the vanes of the guide wheel 100, the second driver overcomes the elastic force of the second elastic member 36, so that the second telescopic vane 35 extends out of the second fixed vane 34. Furthermore, the second telescopic vane 35 can extend out of the second fixed vane 34 by any distance, and thus the size of the vanes formed by the second fixed vane 34 and the second telescopic vane 35 can be changed. When it is necessary to retract the second telescopic vane 35 into the second fixed vane 34, the driving force of the second driver is removed, and then the second elastic member 36 can drive the second telescopic vane 35 to retract into the second fixed vane 34. Specifically, the second elastic member 36 is a helical spring. In other embodiments, the second elastic member 36 can also be elastic rubber, an elastic plate, etc. Therefore, by adjusting the respective extension amounts of the first telescopic vane 32 and the second telescopic vane 35, the flow rate during the operation of the torque converter can be controlled.

[0041] Optionally, the inner ring 2 is provided with a second flow channel 21, and the second flow channel 21 communicates with the second fixed vane 34. The second driver is a hydraulic pump, and the second driver communicates with the second flow channel 21. In this embodiment, the liquid outlet of the second driver communicates with the second flow channel 21, and the liquid inlet of the second driver communicates with the liquid storage pot. The second driver pumps the working liquid in the liquid storage pot into the second flow channel 21, and then the working liquid flows into the second fixed vane 34. Immediately, the working liquid can drive the second telescopic vane 35 located in the second fixed vane 34 to extend out of the second fixed vane 34. In other embodiments, the second driver can also be an air pump.

[0042] Optionally, the first telescopic blade 32 and the second telescopic blade 35 face each other, and the second telescopic blade 35 and the first telescopic blade 32 have a first state of abutting against each other and a second state of separating from each other. The first fixed blade 31 and the second fixed blade 34 are arranged at intervals. In this embodiment, when the first telescopic blade 32 and the second telescopic blade 35 are in the first state, the first telescopic blade 32, the second telescopic blade 35, the first fixed blade 31 and the second fixed blade 34 form a complete large blade. Thereby, the fluid flow rate of the torque converter can be effectively increased. Compared with the impeller 100 of a conventional torque converter, the impeller 100 of this torque converter can be applied to a system with a large power change and can adapt to different working conditions. At the same time, the impeller 100 adopts a structure in which the first telescopic blade 32 and the second telescopic blade 35 are arranged opposite to each other, so that the pushing distance of the first telescopic blade 32 and the second telescopic blade 35 is reduced, and the side shear force received by the impeller 100 is reduced. When the impeller 100 works, it is more stable and durable, and the structure is reasonable. By only changing the impeller 100, the torque converter can be applied to a system with a large power change. Its manufacturing cost is low, the application range is wide, and the probability of conversion and application is relatively high.

[0043] Optionally, the telescopic directions of the first telescopic blade 32 and the second telescopic blade 35 are both the radial direction of the inner ring 2. In this embodiment, this setting can shorten the sliding stroke of the first telescopic blade 32 and the second telescopic blade 35 approaching each other, and thereby can improve the fluid flow rate adjustment efficiency of the torque converter. In other embodiments, the telescopic directions of the first telescopic blade 32 and the second telescopic blade 35 may not be along the radial direction of the inner ring 2.

[0044] When the first telescopic blade 32 and the second telescopic blade 35 are in the first state, the first telescopic blade 32 and the second telescopic blade 35 abut against each other. Thus, the fluid impact force received by the first telescopic blade 32 and the second telescopic blade 35 is the largest at this time. To prevent problems such as breakage and deformation of the first telescopic blade 32 and the second telescopic blade 35, optionally, a slot is provided on the side wall of the first telescopic blade 32 opposite to the second telescopic blade 35, and a plug board is provided on the side wall of the second telescopic blade 35 opposite to the first telescopic blade 32. When the first telescopic blade 32 and the second telescopic blade 35 are in the first state, the plug board and the slot are inserted. This setting can improve the overall strength of the first telescopic blade 32 and the second telescopic blade 35 when the first telescopic blade 32 and the second telescopic blade 35 are in the first state. Prevent problems such as bending.

[0045] Optionally, the blade adjusting assembly 3 further includes a connecting member 37 that fixedly connects the first fixed blade 31 and the second fixed blade 34. In this embodiment, the connecting member 37 is two connecting bars that are spaced apart. One end of each of the two connecting bars is fixedly connected to the first fixed blade 31, and the other end of each of the two connecting bars is fixedly connected to the second fixed blade 34. This arrangement can keep the outer ring 1 and the inner ring 2 coaxially spaced apart.

[0046] To improve the working efficiency of the guide wheel 100, optionally, a plurality of blade adjusting assemblies 3 are provided, and the plurality of blade adjusting assemblies 3 are arranged at equal angular intervals around the circumferential wall of the inner ring 2. In this embodiment, the first driver simultaneously drives the first telescopic blade 32 in the plurality of blade adjusting assemblies 3 to expand and contract relative to the first fixed blade 31, and the second driver simultaneously drives the second telescopic blade 35 in the plurality of blade adjusting assemblies 3 to expand and contract relative to the second fixed blade 34. Furthermore, this arrangement can ensure the stability of the operation of the guide wheel 100.

[0047] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A guide wheel, characterized in that, it includes: an inner ring (2) and an outer ring (1), the outer ring (1) is coaxially sleeved on the inner ring (2) and is spaced from the inner ring (2); a blade adjusting assembly (3), the blade adjusting assembly (3) is arranged between the inner ring (2) and the outer ring (1), the blade adjusting assembly (3) includes a first fixed blade (31), a first telescopic blade (32) and a first elastic member (33), the first fixed blade (31) is a tubular structure, one end of the first fixed blade (31) is fixedly connected to the outer ring (1), the first telescopic blade (32) is inserted into the first fixed blade (31) from the other end of the first fixed blade (31) and is slidably connected to the first fixed blade (31), and the first elastic member (33) drives the first telescopic blade (32) to move in the direction of extending into the first fixed blade (31); a first driver, the first driver drives the first telescopic blade (32) to move in the direction of extending out of the first fixed blade (31); the blade adjusting assembly (3) further includes a second fixed blade (34), a second telescopic blade (35) and a second elastic member (36), the second fixed blade (34) is a tubular structure, one end of the second fixed blade (34) is fixedly connected to the inner ring (2), the second telescopic blade (35) is inserted into the second fixed blade (34) from the other end of the second fixed blade (34) and is slidably connected to the second fixed blade (34), and the second elastic member (36) drives the second telescopic blade (35) to move in the direction of extending into the second fixed blade (34); the guide wheel further includes a second driver, the second driver drives the second telescopic blade (35) to move in the direction of extending out of the second fixed blade (34); the first telescopic blade (32) and the second telescopic blade (35) face each other, and the second telescopic blade (35) and the first telescopic blade (32) have a first state of abutting against each other and a second state of separating from each other, and the first fixed blade (31) and the second fixed blade (34) are spaced apart.

2. The guide wheel according to claim 1, characterized in that, the outer ring (1) is provided with a first flow channel (11), and the first flow channel (11) is communicated with the first fixed blade (31); the first driver is a hydraulic pump, and the first driver is communicated with the first flow channel (11).

3. The guide wheel according to claim 1, characterized in that, the inner ring (2) is provided with a second flow channel (21), and the second flow channel (21) is communicated with the second fixed blade (34); the second driver is a hydraulic pump, and the second driver is communicated with the second flow channel (21).

4. The guide wheel according to claim 1, characterized in that, the telescopic directions of the first telescopic blade (32) and the second telescopic blade (35) are both in the radial direction of the inner ring (2).

5. The guide wheel according to claim 1, characterized in that, A slot is provided on the side wall of the first telescopic blade (32) opposite to the second telescopic blade (35), and a plug board is provided on the side wall of the second telescopic blade (35) opposite to the first telescopic blade (32). When the first telescopic blade (32) and the second telescopic blade (35) are in the first state, the plug board and the slot are plugged together.

6. The guide wheel according to claim 1, characterized in that, the blade adjusting assembly (3) further includes a connecting member (37), and the connecting member (37) fixedly connects the first fixed blade (31) and the second fixed blade (34).

7. The guide wheel according to any one of claims 1-6, characterized in that, a plurality of the blade adjusting assemblies (3) are provided, and the plurality of blade adjusting assemblies (3) are arranged at equal angular intervals around the circumferential wall of the inner ring (2).

8. A hydrodynamic torque converter, characterized in that, it includes the guide wheel (100) according to any one of claims 1-7.

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