Hydraulic turbine transmission

Abstract

The utility model discloses a hydraulic turbine transmission which comprises a shell, an input shaft, an output shaft, a driving pump wheel, a driven wheel body, an inner guide wheel, an outer guide wheel, a partition block and a driven wheel sliding cylinder adjuster. On the basis of the structural principle of an existing hydraulic torque converter, the driving pump wheel and the driven wheel body are mainly arranged to be in a centrifugal turbine mode to replace a gear structure, then the movable sliding barrel is used for adjusting and controlling flow, liquid can flow through different channels of the driven wheel body, and therefore simple and smooth multi-stage gear shifting speed regulation is achieved. The device is simple and durable in structure, compact in overall structure, light in weight, low in cost and suitable for vehicle types of various sizes.

Description

Technical Field

[0001] The utility model relates to the field of transmissions, in particular to a hydraulic turbine transmission. Background Art

[0002] The hydraulic torque converter is also called "hydraulic torque converter", "turbine torque converter" or "dynamic hydraulic torque converter". It is mainly composed of a pump wheel, a turbine and a guide wheel. The pump wheel is connected to the driving shaft and can convert the mechanical energy input by the driving shaft into the kinetic energy and pressure head of the liquid by the action of centrifugal force for the turbine to do work; the turbine is connected to the driven shaft and can output the kinetic energy of the liquid and the energy contained in the pressure head from the driven shaft; the guide wheel is located between the pump wheel and the turbine and is the reaction element of the hydraulic torque converter. It is used to control the reflux of the liquid from the center of the turbine back to the center of the pump wheel.

[0003] This traditional torque converter has a relatively simple structure, but a major drawback is that the speed range is small. At low speeds, the efficiency of the torque converter is low, and at high speeds, the capacity of the torque converter is limited, so it needs to be improved. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a hydraulic turbine transmission.

[0005] The technical solution of the utility model is as follows: A hydraulic turbine transmission, characterized in that it comprises: a housing, an input shaft, an output shaft, a driving pump wheel, a driven wheel body, an inner guide wheel, an outer guide wheel, a spacer block and a driven wheel pulley regulator;

[0006] The input shaft is rotatably arranged on the left side of the housing, and the output shaft is rotatably arranged on the right side of the housing, and the axes of the input shaft and the output shaft are collinear;

[0007] The active pump wheel is arranged on the left side inside the housing and is fixedly connected to the input shaft. The active pump wheel is composed of a single turbine and has multi-stage supercharging blades with unequal diameters.

[0008] The driven wheel body is arranged on the right side of the housing and is fixedly connected to the output shaft. The driven wheel body includes a plurality of driven turbine groups arranged left and right, and each driven turbine group includes a plurality of turbine blades distributed circumferentially around the output shaft.

[0009] The partition block is arranged between the active pump wheel and the driven wheel body and is sleeved on the output shaft. The partition block, the active pump wheel and the driven wheel body divide the internal space of the housing into an inner channel and an outer channel. The inner guide wheel is arranged in the inner channel, and the outer guide wheel is arranged in the outer channel.

[0010] The driven wheel pulley regulator includes a pulley and a guide ring. A guide port and a guide ring are provided on the outer wall of the pulley. The guide ring is adjacent to the right side of the guide port. The pulley is arranged in the outer channel. The pulley can be slid left and right on the driven wheel body so that the guide port corresponds to any driven turbine group.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] Based on the structural principle of the existing torque converter, this device mainly sets the active pump wheel and the driven wheel body into a centrifugal turbine form instead of the gear structure, and then uses a movable slide cylinder to adjust and control the flow, so that the liquid can flow through different channels of the driven wheel body, thereby realizing simple and smooth multi-stage gear shifting and speed regulation. This device has a simple and durable structure, a compact overall structure, a light weight, and a low cost, and is suitable for all types of large and small vehicles.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the utility model after removing the shell;

[0017] Figure 3 It is a projection schematic diagram of the blade of the utility model;

[0018] Figure 4 It is a schematic diagram of the slide barrel of the utility model.

[0019] Reference numerals:

[0020] 1. Housing; 2. Input shaft; 3. Output shaft; 4. Active pump wheel; 5. Driven wheel body; 6. Inner guide wheel; 7. Outer guide wheel; 8. Separator block; 9. Inner channel; 10. Outer channel; 11. First boss; 12. Second boss; 13. Slide cylinder; 14. Guide port; 15. Guide ring; 16. Tail turbine. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] like Figure 1-Figure 4 The hydraulic turbine transmission shown includes: a housing 1, an input shaft 2, an output shaft 3, a driving pump wheel 4, a driven wheel body 5, an inner guide wheel 6, an outer guide wheel 7, a partition block 8 and a driven wheel pulley 13 regulator.

[0026] The input shaft 2 is rotatably arranged on the left side of the housing 1, and the output shaft 3 is rotatably arranged on the right side of the housing 1, and the axes of the input shaft 2 and the output shaft 3 are colinear. In actual use, the input shaft 2 is generally connected to the power end for inputting power; the output shaft 3 is generally connected to the load end for outputting power, and the input shaft 2 and the output shaft 3 are independent of each other and do not affect each other.

[0027] The driving pump wheel 4 is arranged on the left side inside the shell 1 and is fixedly connected to the input shaft 2. The driving pump wheel 4 is composed of a single set of turbines and has multi-stage booster blades of unequal diameters; the driven wheel body 5 is arranged on the right side inside the shell 1 and is fixedly connected to the output shaft 3. The driven wheel body 5 includes a plurality of groups of driven turbine groups arranged left and right, and each group of driven turbine groups includes a plurality of turbine blades distributed circumferentially around the output shaft 3.

[0028] The partition block 8 is arranged between the active pump wheel 4 and the driven wheel body 5 and is externally mounted on the output shaft 3. The partition block 8, the active pump wheel 4 and the driven wheel body 5 divide the internal space of the shell 1 into an inner channel 9 and an outer channel 10. The inner guide wheel 6 is arranged in the inner channel 9, and the outer guide wheel 7 is arranged in the outer channel 10.

[0029] The driven wheel pulley 13 regulator includes a pulley 13 and a guide ring 15. A guide port 14 and a guide ring 15 are provided on the outer wall of the pulley 13. The guide ring 15 is adjacent to the right side of the guide port 14. The pulley 13 is arranged in the outer channel 10. The pulley 13 can be slid left and right on the driven wheel body 5 so that the guide port 14 corresponds to any driven turbine group.

[0030] Specifically, the present device has the same principle as the torque converter in the prior art. In simple terms, when the engine rotates, the power of the engine drives the active pump wheel 4 to rotate, and the active pump wheel 4 pushes the liquid to rotate around its axis along with the active pump wheel 4, so that the liquid obtains a certain speed and pressure, and then the liquid flows to the driven wheel body 5, pushing the driven wheel body 5 to rotate to output power outward. However, in order to obtain a better speed change effect, the present device has been optimized and improved.

[0031] To elaborate, the torque converter has a large transmission torque and an efficiency of up to 93%, and is widely used. The pump wheel driving the driven wheel can only achieve a 1:1 speed ratio transmission and is used as a clutch; the turbine efficiency is as high as 97%. The integration of the two models can further improve the working efficiency of the hydraulic turbine, and it is feasible to use it in a transmission to replace gears.

[0032] The driving pump wheel 4 and the driven wheel body 5 in this device are both made into centrifugal turbines. According to the law of kinetic energy and potential energy conversion: Centrifugal pumps have the following characteristics: (1) The discharge speed of a centrifugal pump is proportional to the flow rate; (2) It is proportional to the square of the head; (3) It is proportional to the cube of the power; and (4) The heads of the coaxial equal flow multi-stage superposition used in the pressurization are also superimposed.

[0033] List the comparison of data of centrifugal pumps with different speeds, different wheel diameters at the same speed, and multi-stage boost at the same speed. (As shown below)

[0034]

[0035] It can be concluded that for centrifugal pumps with different wheel diameters, when the flow rate, power and head are equal, the speed is inversely proportional to the wheel diameter, which is the same as the principle of gear speed transmission. Therefore, changing the effective wheel diameter of the active pump wheel 4 or the driven wheel can be applied to the transmission.

[0036] In practical applications, a turbine with a large wheel diameter can meet the transmission requirements at low speeds, but its volume will be too large. Therefore, this scheme adopts the following measures to solve this problem: (1) Through the coaxial equal flow and unequal diameter multi-stage supercharging and the expansion of the flow diameter design, a medium wheel diameter turbine can have the functions of a large wheel diameter; (2) By changing the blade arrangement angle density, a medium wheel diameter turbine can have the functions of a small diameter turbine.

[0037] Specifically, the active pump wheel 4 in this solution is composed of a single turbine with an outer diameter of 15 and unequal diameter multi-stage booster blades, which is equivalent to a turbine with a wheel diameter of 23 and a wide diameter of 23. In other words, the number of blades and the arrangement density are gradually increased according to the inner and outer diameters, so that the head of the 15-diameter can reach the effect of the 23-diameter, and at the same time, the flow diameter width of the turbine group is expanded. At the same speed, the flow rate and power of the 15-diameter wheel are equivalent to those of the 23-diameter wheel.

[0038] The driven wheel body 5 includes multiple sets of driven turbine groups for low speed, medium speed and high speed, and the outer diameter of the turbine of the driven wheel body 5 is 15. (1) The low speed gear is an unequal diameter multi-stage supercharged design, equivalent to a wheel diameter of 26.6, and a wide diameter of 2.66; (2) The second low speed gear is a supercharged design with a wheel diameter of 18 and a wide diameter of 1.8; (3) The medium speed gear is a single-stage turbine with a wide diameter of 1.5; (4) The high speed gear turbine achieves the function of an effective diameter of 7 by changing the turbine blade angle of the wheel diameter 11 and reducing the blade density, without occupying the inner channel 9, and a wide diameter of 1.5.

[0039] In short, by using multi-stage supercharging and expanding the flow path section, the medium-diameter turbine can have the same head and power as the large-diameter turbine, and have the function of a large wheel diameter, thereby controlling the volume; by using the medium-diameter turbine to change the blade angle and reduce the blade density, it can achieve the function of a small-diameter turbine.

[0040] In this device, a partition block 8 is provided between the driving pump wheel 4 and the driven wheel body 5 to separate the inner and outer circulation channels. The inner channel 9 refers to the channel through which the liquid flows from the driven wheel body 5 to the driving pump wheel 4, and the outer channel 10 refers to the channel through which the liquid flows from the driving pump wheel 4 to the driven wheel body 5.

[0041] In this device, a tail turbine 16 is provided at the tail of the driven wheel body 5, which is the same size as the inner channel 9, has high structural strength, and recovers tail kinetic energy. The inner guide wheel 6 is close to the tail turbine 16 and is installed in the inner channel 9 to change the inertia of liquid movement and improve the transmission efficiency together with the tail turbine 16; the outer guide wheel 7 is installed in the outer channel 10 to change the flow direction of the liquid and make a spiral motion to improve the transmission efficiency of the driven wheel body 5.

[0042] In this device, if Figure 4 As shown, a driven wheel pulley 13 regulator is provided at the outer channel 10. The driven wheel pulley 13 regulator includes a pulley 13, which is cylindrical, open at both ends of the axial direction, but hollowed out in the middle to form a guide port 14, and the pulley 13 is connected to an external gear position control member, so that the pulley 13 can be controlled to slide left and right when shifting gears, so that the guide port 14 corresponds to any driven turbine group, so that the liquid can flow through different driven turbine groups.

[0043] In actual application, a first boss 11 extending to the right is provided on the right side of the partition block 8, a second boss 12 extending to the left is provided on the left side of the shell 1, and the left end of the slide 13 is sleeved on the first boss 11, and the right end is sleeved on the second boss 12.

[0044] The working principle of this device is as follows:

[0045] When the engine rotates, the power of the engine drives the active pump wheel 4 to rotate, and the active pump wheel 4 pushes the liquid to rotate around its axis along with the active pump wheel 4, so that the liquid obtains a certain speed and pressure, and then the liquid flows to the driven wheel body 5, pushing the driven wheel body 5 to rotate to output power outward.

[0046] In this process, the gear position control member controls the slide cylinder 13 to slide left and right, so that the guide port 14 corresponds to any driven turbine group, thereby changing the channel for the fluid to flow through the driven wheel body 5, and achieving gear shifting and speed regulation.

[0047] In summary, based on the structural principle of the existing torque converter, the device mainly sets the active pump wheel 4 and the driven wheel body 5 into a centrifugal turbine form instead of the gear structure, and then uses the movable slide 13 to adjust the flow control so that the liquid can flow through different channels of the driven wheel body 5, thereby realizing simple and smooth multi-stage gear shifting and speed regulation. The device has a simple and durable structure, a compact overall structure, a light weight, and a low cost, and is suitable for all types of large and small vehicles.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hydraulic turbine transmission, characterized in that: include: A housing, an input shaft, an output shaft, a driving pump wheel, a driven wheel body, an inner guide wheel, an outer guide wheel, a separator block and a driven wheel pulley regulator; The input shaft is rotatably arranged on the left side of the housing, and the output shaft is rotatably arranged on the right side of the housing, and the axes of the input shaft and the output shaft are collinear; The active pump wheel is arranged on the left side inside the housing and is fixedly connected to the input shaft. The active pump wheel is composed of a single turbine and has multi-stage supercharging blades with unequal diameters. The driven wheel body is arranged on the right side of the housing and is fixedly connected to the output shaft. The driven wheel body includes a plurality of driven turbine groups arranged left and right, and each driven turbine group includes a plurality of turbine blades distributed circumferentially around the output shaft. The partition block is arranged between the active pump wheel and the driven wheel body and is sleeved on the output shaft. The partition block, the active pump wheel and the driven wheel body divide the internal space of the housing into an inner channel and an outer channel. The inner guide wheel is arranged in the inner channel, and the outer guide wheel is arranged in the outer channel. The driven wheel pulley regulator includes a pulley and a guide ring. A guide port and a guide ring are provided on the outer wall of the pulley. The guide ring is adjacent to the right side of the guide port. The pulley is arranged in the outer channel. The pulley can be slid left and right on the driven wheel body so that the guide port corresponds to any driven turbine group.

2. The hydraulic turbine transmission according to claim 1, characterized in that: The outer diameter of the active pump wheel is 15, and the driven wheel body includes multiple sets of driven turbine groups of low speed gear, medium speed gear and high speed gear. The outer diameter of the turbine of the driven wheel body is 15.

3. The hydraulic turbine transmission according to claim 1, characterized in that: A tail turbine is arranged at the tail of the driven wheel body.

4. The hydraulic turbine transmission according to claim 3, characterized in that: The inner guide wheel is adjacent to the tail turbine.

Images