Engine gearbox hydraulic torque converter

Abstract

The invention discloses an engine transmission torque converter, comprising an impeller shell and a front shell cover, wherein the front shell cover is installed on one side of the impeller shell, and a driving interface is provided at a middle position of the impeller shell away from the front shell cover, a positioning bolt is provided at an edge of the front shell cover away from the impeller shell, and the front shell cover is fixed to the impeller shell by the positioning bolt, a reinforcing protrusion is provided on the side wall of the front shell cover, an impeller is arranged in the impeller shell, and a turbine, a guide wheel and a locking clutch assembly are arranged inside the impeller shell and the front shell cover, a turbine is arranged on one side of the impeller, and a guide wheel is provided at a middle position between the impeller and the turbine; the invention increases the force bearing area and improves the thrust of the turbine through the segmented cooperation of the impeller blades, effectively avoids the backflow vortex, increases the oil inflow speed at the turbine inlet, reduces the flow loss of the oil, and improves the transmission efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission equipment, and in particular to a hydraulic torque converter for an engine transmission. Background Art

[0002] The hydraulic torque converter is an impeller machine that relies on fluid kinetic energy to transmit power. It is widely used in the fields of automobiles, forklifts, engineering machinery, etc. The hydraulic torque converter is mainly composed of a pump wheel, a turbine and a guide wheel. It is installed between the engine and the gearbox, uses hydraulic oil as the working medium, and plays the role of transmitting torque, changing speed and clutching, so that the engine can achieve soft start, and can automatically adjust the output of power and speed according to the change of load size. The existing hydraulic torque converter turbine has a small force area, the thrust received by the turbine is small, and a vortex shape is easily formed at the entrance of the force surface of the turbine blade, which makes the oil flow poor and the transmission efficiency low. In addition, the existing hydraulic torque converter absorbs the torsional vibration force of the rotating parts through the spring on the locking clutch assembly. The spring is subjected to a large load and is prone to burrs and wear. At the same time, the existing hydraulic torque converter will generate noise during operation, and the turbine and the guide wheel are prone to wear. Therefore, the present invention proposes an engine gearbox hydraulic torque converter to solve the problems existing in the prior art. Summary of the invention

[0003] In view of the above problems, the present invention proposes an engine transmission hydraulic torque converter, which avoids oil reflux vortex through segmented blades, increases the oil inflow speed at the turbine inlet, and reduces the flow loss of the oil. In addition, the inner and outer springs of the engine transmission hydraulic torque converter are engaged with each other, and the force is evenly applied, which inhibits wear and avoids burrs.

[0004] In order to solve the above problems, the present invention proposes an engine transmission torque converter, including an impeller shell and a front shell cover, wherein the front shell cover is installed on one side of the impeller shell, and a driving interface is provided at a middle position of the impeller shell away from the front shell cover, a positioning bolt is provided at an edge of the front shell cover away from the impeller shell, and the front shell cover is fixed to the impeller shell by the positioning bolt, a reinforcing protrusion is provided on the side wall of the front shell cover, an impeller is provided in the impeller shell, and a turbine, a guide wheel and a locking clutch assembly are provided inside the impeller shell and the front shell cover, a turbine is provided on one side of the impeller, and a guide wheel is provided at a middle position between the impeller and the turbine, automatic transmission oil is provided between the impeller and the turbine, and a locking clutch assembly is provided on the side of the turbine away from the impeller.

[0005] A further improvement is that the impeller includes tail blades and main blades, the impeller housing has tail blades around the hole groove of the drive interface, and the impeller housing has main blades around the edge.

[0006] A further improvement is that a one-way clutch is provided on the guide wheel, and thrust needle roller bearings are provided at the middle positions on both sides of the guide wheel.

[0007] A further improvement is that the locking clutch assembly includes a clamping plate and a driving plate, a driving plate is provided at the middle position of the clamping plate close to the turbine side, and the driving plate is installed with the clamping plate through a locking ring, an outer spring is provided around the edge of one side of the driving plate, and an inner spring is provided inside the outer spring.

[0008] A further improvement is that a hub is provided on the inner side of the turbine, and the hub is fixed to the turbine by welding.

[0009] A further improvement is that: the number of blades on the turbine is more than the number of blades on the pump wheel, and the bending direction of the turbine blades is opposite to that of the pump wheel blades.

[0010] A further improvement is that the centers of the impeller housing, the front housing cover, the drive interface, the impeller, the turbine, the guide wheel and the locking clutch assembly are on the same axis.

[0011] The beneficial effects of the present invention are as follows: the present invention increases the force-bearing area and improves the thrust of the turbine through the mutual cooperation of the main blades and the tail blades, and the segmented blades can effectively avoid the backflow vortex, increase the oil inflow speed at the turbine inlet, reduce the flow loss of the oil, and improve the transmission efficiency. At the same time, the present invention can withstand a larger load through the mutual engagement of the outer spring and the inner spring inside it. After long-term use, the inner and outer springs are evenly stressed, which can inhibit wear and avoid burrs. In addition, the present invention can reduce unnecessary friction and eliminate noise through the arrangement of two sets of thrust needle roller bearings, avoid wear between the turbine and the guide wheel, and increase the load of the device. Finally, the present invention improves the strength of the front shell cover by reinforcing the protrusion, can withstand a larger torque, is not easy to be damaged and cracked, and extends the life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the present invention.

[0013] Figure 2 This is a split diagram of the present invention.

[0014] Figure 3 It is a schematic diagram of the pump wheel of the present invention.

[0015] Figure 4 It is a schematic diagram of the guide wheel of the present invention.

[0016] Figure 5 It is a schematic diagram of the locking clutch assembly of the present invention.

[0017] Among them: 1- impeller housing, 2- front housing cover, 3- drive interface, 4- positioning bolt, 5- reinforcement protrusion, 6- impeller, 7- turbine, 8- guide wheel, 9- locking clutch assembly, 10- tail blade, 11- main blade, 12- thrust needle roller bearing, 13- clamping plate, 14- drive plate, 15- locking ring, 16- outer spring, 17- inner spring, 18- wheel hub. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0019] according to Figure 1 , 2 As shown in Figures 3, 4 and 5, this embodiment provides an engine transmission torque converter, including an impeller shell 1 and a front shell cover 2, wherein the front shell cover 2 is installed on one side of the impeller shell 1, and a driving interface 3 is provided at a middle position of the impeller shell 1 away from the front shell cover 2, a positioning bolt 4 is provided at the edge of the front shell cover 2 away from the impeller shell 1, and the front shell cover 2 is fixed to the impeller shell 1 through the positioning bolt 4, a reinforcing protrusion 5 is provided on the side wall of the front shell cover 2, an impeller 6 is provided in the impeller shell 1, and a turbine 7, a guide wheel 8 and a locking clutch assembly 9 are provided inside the impeller shell 1 and the front shell cover 2, a turbine 7 is provided on one side of the impeller 6, and a guide wheel 8 is provided at a middle position between the impeller 6 and the turbine 7, automatic transmission oil is provided between the impeller 6 and the turbine 7, a locking clutch assembly 9 is provided on the side of the turbine 7 away from the impeller 6, the impeller 6 includes a tail blade 10 and a main blade 11, and the impeller shell 1 is surrounded by a plurality of internal parts. A tail blade 10 is provided at the hole groove around the drive interface 3, and a main blade 11 is provided around the edge inside the impeller shell 1, a one-way clutch is provided on the guide wheel 8, and thrust needle bearings 12 are provided at the middle position on both sides of the guide wheel 8, the locking clutch assembly 9 includes a clamping plate 13 and a driving plate 14, the clamping plate 13 is provided with a driving plate 14 at the middle position close to the turbine 7, and the driving plate 14 is installed with the clamping plate 13 through a locking ring 15, an outer spring 16 is provided around the edge of one side of the driving plate 14, and an inner spring 17 is provided inside the outer spring 16, a hub 18 is provided on the inner side of the turbine 7, and the hub 18 is welded and fixed to the turbine 7, the blades on the turbine 7 are more than the blades on the impeller 6, and the bending direction of the blades of the turbine 7 is opposite to the bending direction of the blades of the impeller 6, and the centers of the impeller shell 1, the front shell cover 2, the drive interface 3, the impeller 6, the turbine 7, the guide wheel 8 and the locking clutch assembly 9 are on the same axis.

[0020] The engine transmission hydraulic torque converter increases the force-bearing area and improves the thrust of the turbine 7 through the mutual cooperation of the main blade 11 and the tail blade 10, and the segmented blades can effectively avoid the backflow vortex, increase the oil inflow speed at the inlet of the turbine 7, reduce the flow loss of the oil, and improve the transmission efficiency. At the same time, the engine transmission hydraulic torque converter can withstand a larger load through the mutual engagement of the outer spring 16 and the inner spring 17 inside it. After long-term use, the inner and outer springs are evenly stressed, which can inhibit wear and avoid burrs. In addition, the engine transmission hydraulic torque converter can reduce unnecessary friction, eliminate noise, avoid wear between the turbine 7 and the guide wheel 8, and increase the device load through the arrangement of two sets of thrust needle roller bearings 12. Finally, the engine transmission hydraulic torque converter improves the strength of the front shell cover 2 by reinforcing the protrusion 5, can withstand a larger torque, is not easy to be damaged or cracked, and extends the life of the device.

[0021] Before use, the device is installed and connected between the engine and the automatic transmission. When the car is started and the engine is running, the front housing 2, the impeller shell 1 and the internal impeller 6 are driven to rotate together with it. Under the action of centrifugal force, the oil in the impeller 6 rushes from the outer edge of the impeller 6 blades to the turbine 7, flows along the turbine 7 blades to the guide wheel 8, and then flows back to the inner edge of the impeller 6 blades through the guide wheel 8 blades, forming a circulating liquid flow. During the circulation of the oil, the fixed guide wheel 8 gives the turbine 7 a reaction torque, so that the output torque of the turbine 7 is different from the input torque of the impeller 6. When the car is starting or driving on bad roads, the locking clutch assembly 9 separates the impeller 6 and the turbine 7, allowing the car to automatically adapt to the drastic changes in driving resistance with full hydraulic transmission. After reaching a good road, the locking clutch assembly combines the impeller 6 and the turbine 7, so that the input and output shafts of the device become rigidly connected and converted into direct mechanical transmission.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An engine transmission torque converter, characterized in that: The invention comprises an impeller housing (1) and a front housing cover (2), wherein the front housing cover (2) is installed on one side of the impeller housing (1), and a driving interface (3) is provided at a middle position of a side of the impeller housing (1) away from the front housing cover (2), a positioning bolt (4) is provided at an edge of a side of the front housing cover (2) away from the impeller housing (1), and the front housing cover (2) is fixed to the impeller housing (1) via the positioning bolt (4), a reinforcing protrusion (5) is provided on a side wall of the front housing cover (2), an impeller (6) is provided inside the impeller housing (1), and a turbine (7), a guide wheel (8) and a locking clutch assembly (9) are provided inside the impeller housing (1) and the front housing cover (2), a turbine (7) is provided on one side of the impeller (6), and a guide wheel (8) is provided at a middle position between the impeller (6) and the turbine (7), and the impeller (6) and the turbine (7) are connected to the guide wheel (8). Automatic transmission oil is provided between the turbine (7), and a locking clutch assembly (9) is provided on a side of the turbine (7) away from the pump wheel (6); the pump wheel (6) comprises a tail blade (10) and a main blade (11), the pump wheel housing (1) is provided with a tail blade (10) at a hole groove around the drive interface (3), and the pump wheel housing (1) is provided with a main blade (11) around the edge; the locking clutch assembly (9) comprises a clamping plate (13) and a driving plate (14), the clamping plate (13) is provided with a driving plate (14) at a middle position on a side close to the turbine (7), and the driving plate (14) is mounted on the clamping plate (13) via a locking ring (15), and an outer spring (16) is provided on one side of the driving plate (14) around the edge, and an inner spring (17) is provided inside the outer spring (16).

2. The engine transmission torque converter according to claim 1, characterized in that: The guide wheel (8) is provided with a one-way clutch, and thrust needle roller bearings (12) are provided at the middle positions on both sides of the guide wheel (8).

3. The engine transmission torque converter according to claim 1, characterized in that: A wheel hub (18) is provided on the inner side of the turbine (7), and the wheel hub (18) is fixed to the turbine (7) by welding.

4. The engine transmission torque converter according to claim 1, characterized in that: The number of blades on the turbine (7) is greater than that on the pump wheel (6), and the bending direction of the blades on the turbine (7) is opposite to the bending direction of the blades on the pump wheel (6).

5. The engine transmission torque converter according to claim 1, characterized in that: The centers of the impeller housing (1), the front housing cover (2), the drive interface (3), the impeller (6), the turbine (7), the guide wheel (8) and the locking clutch assembly (9) are on the same axis.

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