Hydraulic stepless torque converter

Abstract

The utility model relates to a hydraulic stepless torque converter, and belongs to the technical field of automobile transmissions. The hydraulic stepless torque converter comprises a shell, transmission holes are formed in the two ends of the shell, and the shell is filled with hydraulic oil; the input shaft is rotationally connected to the inner side of one of the transmission holes; the pump wheel is fixedly connected to the end, facing the other transmission hole, of the input shaft, the shape of blades of the pump wheel is in a honeycomb spiral shape, and check rings which are evenly distributed are fixedly connected to the surface of the pump wheel; a user controls the variable hydraulic pump to suck hydraulic oil on one side and convey the hydraulic oil to the other side to push the cylindrical piston block to move; the cylindrical piston block drives the flow control baffle to move through the cylinder, the gap between the flow control baffle and the pump wheel is accurately adjusted, the flow and the flow speed of oil in the shell are effectively controlled, and therefore the traditional gear combination requirement is eliminated, and smooth stepless pitch changing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive transmission technology, and in particular to a hydraulic continuously variable torque converter. Background Technology

[0002] The torque converter is a core component of the transmission system in modern automatic vehicles. It is located between the engine and the gearbox and transmits power and converts torque through hydraulic oil.

[0003] Existing hydraulic torque converters can only achieve a small range of torque increase during transmission. They need to be paired with several different gear ratios to achieve speed change. This not only results in complex structure and difficult maintenance, but also in low pitch shifting accuracy and poor pitch change effect. Utility Model Content

[0004] Therefore, it is necessary to provide a hydraulic continuously variable torque converter to address the flow deviation problem caused by hydraulic clamping and friction in the valve core of traditional hydraulic continuously variable torque converters.

[0005] A hydraulic continuously variable torque converter, comprising:

[0006] The outer casing has transmission holes at both ends, and the interior of the outer casing is filled with hydraulic oil.

[0007] An input shaft, which is rotatably connected to the inside of one of the transmission holes;

[0008] The pump wheel is fixedly connected to one end of the input shaft facing the other transmission hole. The pump wheel blades are honeycomb spiral in shape. The surface of the pump wheel is fixedly connected with uniformly distributed retaining rings. The diameter ratio between the retaining rings and the adjacent retaining rings near one of the transmission holes is 19 to 20.

[0009] A flow control baffle is slidably connected between the housing and the input shaft. The flow control baffle is disposed between one of the transmission holes and the pump wheel. The inner side of the flow control baffle is provided with uniformly distributed annular stepped grooves, and the inner diameter of the annular stepped grooves gradually increases from the input shaft to the pump wheel.

[0010] An electronically controlled regulating mechanism is fixedly connected between the flow control baffle and the outer casing, with one end of the electronically controlled regulating mechanism extending through the outer casing;

[0011] An output shaft, which is rotatably connected to the inside of another of the transmission holes;

[0012] The turbine is fixedly connected to the end of the output shaft facing the pump wheel.

[0013] In one embodiment, the electronically controlled adjustment mechanism includes a cylindrical cylinder fixedly connected to the vertical inner wall of the outer casing. A cylindrical piston block is slidably connected inside the cylindrical cylinder. A cylindrical cylinder rotatably connected to a flow control baffle is fixedly connected to one end of the cylindrical piston block facing the pump wheel. Two high-pressure resistant liquid guide pipes are fixedly connected and communicated on the lower surface of the cylindrical cylinder and are respectively arranged on both sides of the cylindrical piston block. The end of the high-pressure resistant liquid guide pipe facing away from the cylindrical cylinder extends through the outer casing. A variable hydraulic pump fixedly connected to the outer casing is connected between the two high-pressure resistant liquid guide pipes. The cylindrical cylinder, the high-pressure resistant liquid guide pipes, and the variable hydraulic pump are all filled with hydraulic oil.

[0014] In one embodiment, the flow control baffle has an isosceles trapezoidal cross-sectional shape, and the inner diameter of the flow control baffle gradually increases from the input axis in the direction of the pump wheel.

[0015] In one embodiment, the flow control baffle has a guide hole on its vertical side, and a guide rod that is fixedly connected to the pump wheel is slidably connected to the inner side of the guide hole.

[0016] In one embodiment, the number of guide holes and guide rods are both six and are arranged in a ring around the centerline of the input shaft, with the guide rods parallel to the centerline of the input shaft.

[0017] In one embodiment, a sealing ring is embedded in the inner side of both the flow control baffle and the guide hole, and the sealing ring is a fluororubber material component.

[0018] In one embodiment, a sealed bearing is embedded inside the transmission hole, one of the sealed bearings being nested on the surface of the input shaft and the other sealed bearing being nested on the surface of the output shaft.

[0019] Beneficial effects

[0020] The aforementioned hydraulic continuously variable torque converter achieves stepless torque conversion through an electronically controlled adjustment mechanism. This mechanism includes a cylindrical cylinder, a cylindrical piston block, a cylindrical tube, a high-pressure resistant fluid guide pipe, and a variable displacement hydraulic pump. The user controls the variable displacement hydraulic pump to draw hydraulic oil from one side and deliver it to the other, pushing the cylindrical piston block to move. The cylindrical piston block, through the cylindrical tube, drives a flow control baffle to move, precisely adjusting the gap between the flow control baffle and the pump impeller. This effectively controls the flow rate and velocity of the oil inside the casing, eliminating the need for traditional gear combinations and achieving smooth, stepless torque conversion.

[0021] This hydraulic continuously variable transmission (CVT) achieves precise gear adjustment. Evenly distributed annular stepped grooves are formed on the inner side of the flow control baffle, each groove representing a gear position with increasing height. When the electronically controlled regulating mechanism moves the flow control baffle a distance of N gears, the hydraulic fluid passes through the gap channel after the pump impeller separates from the annular stepped grooves. This precisely controls the hydraulic fluid flow, driving the pump impeller to rotate the turbine, which in turn drives the output shaft to output power. This design avoids the problem of low gear accuracy in traditional torque converters, achieving high-precision gear shifting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a vertical sectional view of the overall structure of this utility model;

[0025] Figure 3 This is an exploded view of a partial structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 5 This is a schematic diagram showing the flow direction of the oil in this utility model.

[0028] Figure label:

[0029] 100. Housing; 110. Transmission hole; 200. Input shaft; 300. Pump impeller; 310. Retaining ring; 400. Flow control baffle; 410. Annular stepped groove; 420. Guide hole; 500. Electrically controlled adjustment mechanism; 510. Cylindrical cylinder; 520. Cylindrical piston block; 530. Cylindrical tube; 540. High-pressure resistant fluid guide tube; 550. Variable displacement hydraulic pump; 600. Output shaft; 700. Turbine; 800. Guide rod; 900. Sealing ring; 1000. Sealed bearing. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The following is combined Figures 1-5 This invention describes a hydraulic continuously variable torque converter.

[0032] In one embodiment, a hydraulic continuously variable torque converter includes:

[0033] The outer casing 100 has transmission holes 110 at both ends, and the interior of the outer casing 100 is filled with hydraulic oil.

[0034] Input shaft 200 is rotatably connected to the inside of one of the transmission holes 110;

[0035] Pump wheel 300 is fixedly connected to one end of input shaft 200 facing another transmission hole 110. The shape of the blade of pump wheel 300 is honeycomb spiral. The surface of pump wheel 300 is fixedly connected with uniformly distributed retaining rings 310. The diameter ratio between the retaining ring 310 and the adjacent retaining ring 310 close to one of the transmission holes 110 is 19 to 20.

[0036] A flow control baffle 400 is slidably connected between the housing 100 and the input shaft 200. The flow control baffle 400 is disposed between one of the transmission holes 110 and the pump wheel 300. The inner side of the flow control baffle 400 is provided with a uniformly distributed annular stepped groove 410. The inner diameter of the annular stepped groove 410 gradually increases from the input shaft 200 toward the pump wheel 300.

[0037] One annular stepped groove 410 can represent one gear position. The position of each annular stepped groove 410 is one gear position higher than the previous annular stepped groove 410 (e.g., 1cm for the first gear, 1.5cm for the second gear, 2cm for the third gear, and 2.5cm for the fourth gear). The flow control baffle 400 moves 1cm. When the annular stepped groove 410 separates from the retaining ring 310, the oil enters the spiral blades of the pump wheel 300 from the inside of the retaining ring 310.

[0038] An electronically controlled regulating mechanism 500 is fixedly connected between the flow control baffle 400 and the outer casing 100, with one end of the electronically controlled regulating mechanism 500 extending through the outer casing 100.

[0039] Output shaft 600 is rotatably connected to the inside of another transmission hole 110;

[0040] Turbine 700 is fixedly connected to the end of output shaft 600 facing pump wheel 300.

[0041] The electronically controlled regulating mechanism 500 includes a cylindrical cylinder 510 fixedly connected to the vertical inner wall of the outer casing 100. A cylindrical piston block 520 is slidably connected inside the cylindrical cylinder 510. A cylindrical cylinder 530, which is rotatably connected to the flow control baffle 400, is fixedly connected to one end of the cylindrical piston block 520 facing the pump wheel 300. Two high-pressure resistant liquid guide pipes 540 are fixedly connected and connected to the lower surface of the cylindrical cylinder 510 and are respectively arranged on both sides of the cylindrical piston block 520. One end of the high-pressure resistant liquid guide pipe 540 facing away from the cylindrical cylinder 510 passes through the outer casing 100. A variable hydraulic pump 550, which is fixedly connected to the outer casing 100, is connected between the two high-pressure resistant liquid guide pipes 540. The cylindrical cylinder 510, the high-pressure resistant liquid guide pipes 540, and the variable hydraulic pump 550 are all filled with hydraulic oil.

[0042] The flow control baffle 400 has an isosceles trapezoidal cross-sectional shape, and the inner diameter of the flow control baffle 400 gradually increases from the input shaft 200 toward the pump wheel 300.

[0043] The flow control baffle 400 has a guide hole 420 on its vertical side, and a guide rod 800 that is fixedly connected to the pump wheel 300 is slidably connected to the inner side of the guide hole 420.

[0044] There are six guide holes 420 and six guide rods 800, which are arranged in a ring around the center line of the input shaft 200. The guide rods 800 are parallel to the center line of the input shaft 200.

[0045] A sealing ring 900 is embedded in the inner side of both the flow control baffle 400 and the guide hole 420. The sealing ring 900 is a fluororubber component.

[0046] A sealed bearing 1000 is embedded in the inner side of the transmission hole 110, one of which is nested on the surface of the input shaft 200 and the other is nested on the surface of the output shaft 600.

[0047] The specific operating procedure of the hydraulic continuously variable torque converter is as follows:

[0048] 1. Power is transmitted through the input shaft 200 to drive the pump wheel 300 to rotate. The flow control baffle 400 rotates with the pump wheel 300 via the guide rod 800. Oil with flow velocity flows through the annular stepped groove 410 between the pump wheel 300 and the flow control baffle 400 to impact and rotate the turbine 700. The turbine 700 drives the output shaft 600 to rotate, thereby realizing power transmission.

[0049] 2. The user can control the hydraulic pump 550 to draw hydraulic oil from one side of the cylindrical piston block 520 according to the needs, and guide the drawn hydraulic oil to the other side of the cylindrical piston block 520. During the flow of the hydraulic oil, the cylindrical piston block 520 can also be pushed to move in the corresponding direction. The cylindrical piston block 520 drives the flow control baffle 400 to move accordingly through the cylindrical cylinder 530. This can accurately adjust the gap between the flow control baffle 400 and the pump wheel 300, effectively control the flow rate and velocity of the oil inside the housing 100, and thus achieve the effect of stepless torque.

[0050] Third, the user can adjust the speed according to the adjustment distance of the flow control baffle 400. When the flow control baffle 400 moves to the left by N (N≥1) gears, N (N≥1) gears of oil will pass through the gap channel between the pump wheel 300 and the annular stepped groove 410, thereby driving the pump wheel 300 to realize the speed change of the gear, and transmitting it out through the output shaft 600.

[0051] The specific installation process of a hydraulic continuously variable torque converter:

[0052] Preparation: Clean the working area to prevent dust or impurities from entering the torque converter.

[0053] Disassemble related components such as wheels, half-shafts, or engine mounts.

[0054] Input shaft 200 connection: The input shaft 200 of the hydraulic torque converter is directly connected to the engine crankshaft via a coupling. The housing 100 is bolted to the flange at the rear end of the engine crankshaft and rotates with the crankshaft to introduce engine power into the system.

[0055] Output shaft 600 connection: The output shaft 600 is rigidly connected to the universal joint drive via a spline shaft to achieve power transmission.

[0056] Install the connecting bolts between the torque converter and the engine, and tighten them evenly with a torque wrench. Reinstall the disassembled parts (such as half shafts and brackets), and perform tests: start the engine and check the smoothness of gear shifting and the absence of leaks.

[0057] It should be noted that the variable hydraulic pump 550 mentioned above is a device with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the variable hydraulic pump 550 is powered by the vehicle power supply, which will not be elaborated here.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic continuously variable torque converter, characterized in that, include: The outer casing (100) has transmission holes (110) at both ends, and the interior of the outer casing (100) is filled with hydraulic oil. An input shaft (200) is rotatably connected to the inside of one of the transmission holes (110); A pump wheel (300) is fixedly connected to one end of the input shaft (200) facing the other transmission hole (110). The pump wheel (300) has a honeycomb spiral blade. The surface of the pump wheel (300) is fixedly connected with uniformly distributed retaining rings (310). The diameter ratio between the retaining rings (310) and the retaining rings (310) adjacent to one of the transmission holes (110) is 19 to 20. A flow control baffle (400) is slidably connected between the housing (100) and the input shaft (200). The flow control baffle (400) is disposed between one of the transmission holes (110) and the pump wheel (300). The inner side of the flow control baffle (400) is provided with uniformly distributed annular stepped grooves (410). The inner diameter of the annular stepped grooves (410) gradually increases from the input shaft (200) toward the pump wheel (300). An electronically controlled regulating mechanism (500) is fixedly connected between the flow control baffle (400) and the outer casing (100), with one end of the electronically controlled regulating mechanism (500) extending through the outer casing (100). An output shaft (600) is rotatably connected to the inside of another of the transmission holes (110); A turbine (700) is fixedly connected to one end of the output shaft (600) facing the pump wheel (300).

2. The hydraulic continuously variable torque converter according to claim 1, characterized in that, The electronically controlled regulating mechanism (500) includes a cylindrical cylinder (510) fixedly connected to the vertical inner wall of the outer casing (100). A cylindrical piston block (520) is slidably connected inside the cylindrical cylinder (510). A cylindrical cylinder (530) rotatably connected to a flow control baffle (400) is fixedly connected to one end of the cylindrical piston block (520) facing the pump wheel (300). Two... High-pressure resistant liquid guide pipes (540) are respectively arranged on both sides of the cylindrical piston block (520). The end of the high-pressure resistant liquid guide pipe (540) facing away from the cylindrical cylinder (510) extends through the outer shell (100). A variable hydraulic pump (550) fixedly connected to the outer shell (100) is connected between the two high-pressure resistant liquid guide pipes (540). The cylindrical cylinder (510), the high-pressure resistant liquid guide pipes (540) and the variable hydraulic pump (550) are all filled with hydraulic oil.

3. The hydraulic continuously variable torque converter according to claim 1, characterized in that, The flow control baffle (400) has an isosceles trapezoidal cross-sectional shape, and the inner diameter of the flow control baffle (400) gradually increases from the input shaft (200) toward the pump wheel (300).

4. The hydraulic continuously variable torque converter according to claim 1, characterized in that, The flow control baffle (400) has a guide hole (420) on its vertical side, and a guide rod (800) that is fixedly connected to the pump wheel (300) is slidably connected to the inner side of the guide hole (420).

5. The hydraulic continuously variable torque converter according to claim 4, characterized in that, The number of guide holes (420) and guide rods (800) are six in total and are arranged in a ring around the axis of the input shaft (200). The guide rods (800) are parallel to the axis of the input shaft (200).

6. The hydraulic continuously variable torque converter according to claim 1, characterized in that, A sealing ring (900) is embedded in the inner side of both the flow control baffle (400) and the guide hole (420), and the sealing ring (900) is a fluororubber material component.

7. The hydraulic continuously variable torque converter according to claim 1, characterized in that, A sealed bearing (1000) is embedded in the inner side of the transmission hole (110), one of the sealed bearings (1000) is nested on the surface of the input shaft (200), and the other sealed bearing (1000) is nested on the surface of the output shaft (600).

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