Hydraulic torque converter, auxiliary tool and assembling method

Abstract

The invention discloses a hydraulic torque converter, an auxiliary tool and an assembly method, and belongs to the field of transmissions.The hydraulic torque converter comprises a hydraulic torque converter cover wheel, a hydraulic torque converter spline disc, a friction plate back plate and a hydraulic torque converter pump wheel which are fixedly connected in sequence; the bottom end of the hydraulic torque converter pump wheel is fixedly connected with driving teeth, the hydraulic torque converter cover wheel, the hydraulic torque converter spline disc, the friction plate back plate, the hydraulic torque converter pump wheel and the driving teeth form a first cavity, and a hydraulic torque converter locking disc, a turbine hub and a guide wheel base which are coaxial are sequentially arranged in the center of the first cavity. According to the assembling method, reverse measurement does not need to be conducted on the hydraulic torque converter assembly, and the situation that due to the fact that the weight and the size of the torque converter are large, large potential safety hazards are generated during tooling and overturning is avoided; and the assembling efficiency in the assembling process is also improved, the consistency of the assembling method is guaranteed, and the assembling consistency of the hydrodynamic transmission is further guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of transmissions and relates to an assembly method, in particular to a hydraulic torque converter, an auxiliary tooling and an assembly method. Background Art

[0002] The torque converter is an important component of the hydraulic automatic transmission. Its function is to transfer the torque output by the engine to the driven element of the torque converter through the active element of the torque converter via the special hydraulic transmission hydraulic oil, and finally to the transmission. In this torque transmission process, the torque converter can achieve infinite changes in speed and torque within a certain range, so that the vehicle can drive normally under different driving conditions. In addition, due to the existence of the torque converter, the driver does not need to turn off the engine when stepping on the brake pedal. At this time, the engine power is not interrupted, but the vehicle can remain stationary. This feature makes it more convenient and safer for the driver to drive the vehicle.

[0003] The internal structure of the torque converter is mainly composed of a pump wheel, a guide wheel and a turbine. The turbine is connected to the engine output as an active component, and the turbine is connected to the gearbox input as a driven component. The application of the torque converter reduces the impact and vibration of the vehicle power during the transmission process and prolongs the service life of related components. Especially for the commercial vehicle field, the existence of the torque converter greatly improves the safety and comfort of driving.

[0004] Since the torque converter is an assembly part, it needs to be connected and assembled with other parts of the hydraulic automatic transmission as a whole during installation. On-site operators cannot visually see the internal structure of the hydraulic automatic transmission and can only perform blind installation based on experience and feeling. Therefore, the problem of incomplete assembly often occurs during the assembly process of the torque converter and the hydraulic automatic transmission.

[0005] When matching with the engine, it is necessary to ensure that the surface of the torque converter after installation has a fixed distance to the surface of the stopper of the torque converter housing. However, due to the accumulation of machining errors of various parts here, the distance between the surface of each torque converter and the stopper surface of the torque converter housing is inconsistent. Therefore, it is necessary to ensure the consistency of the distance between the surface of the torque converter and the stopper surface of the torque converter housing by adding gaskets according to the error between the different parts of each hydraulic automatic transmission. However, the selection of adjustment gaskets requires repeated segmented measurements, and the error of each measurement will accumulate as the number of measurements increases, resulting in a large measurement error. In addition, the influence of the gap between the parts needs to be eliminated during the measurement process, so the torque converter assembly must be reversed and measured under the action of gravity. This not only increases the complexity of the measurement and wastes a lot of time, but also has certain safety hazards, and there is a risk of damage to the operator and on-site parts. During the measurement process, the benchmarks and measuring tools and measurement methods of each installed operator are inconsistent, and the consistency of the assembly state of each hydraulic automatic transmission cannot be guaranteed. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a hydraulic torque converter, an auxiliary tooling and an assembly method to solve the technical problem in the prior art that the consistency of the assembly state of the hydraulic automatic transmission cannot be guaranteed.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0008] A hydraulic torque converter assembly comprises a hydraulic torque converter cover wheel, a hydraulic torque converter spline keypad, a friction plate back plate and a hydraulic torque converter pump wheel which are fixedly connected in sequence; a driving tooth is fixedly connected to the bottom end of the hydraulic torque converter pump wheel; the hydraulic torque converter cover wheel, the hydraulic torque converter spline keypad, the friction plate back plate, the hydraulic torque converter pump wheel and the driving tooth form a first cavity; a coaxial hydraulic torque converter locking disc, a turbine hub and a guide wheel seat are sequentially arranged at the center of the first cavity;

[0009] The vertical upper end of the turbine hub is fixedly connected with a torsion damper, and the friction plate group of the torsion damper arranged on the radial outer side of the torsion damper is connected with the torque converter spline; the vertical lower end of the turbine hub is fixedly connected with a torque converter turbine;

[0010] A one-way clutch is sleeved on the outer side of the guide wheel seat, the one-way clutch and the guide wheel seat are circumferentially fixed by a connecting plate, and a torque converter guide wheel is fixedly connected to the connecting plate;

[0011] There is a first gap between the torque converter turbine and the torque converter guide wheel; there is a second gap between the torque converter guide wheel and the torque converter pump wheel; there is a third gap between the torque converter turbine and the torque converter pump wheel; there is a fourth gap between the torque converter cover wheel and the torque converter locking plate;

[0012] A locking piston is sleeved on the bottom of the torque converter cover wheel, the top of the locking piston contacts the torque converter cover wheel, and the bottom of the locking piston contacts the top of the friction plate group.

[0013] The present invention also includes the following technical features:

[0014] The bottom end of the torque converter pump wheel is fixedly connected to the driving tooth by a first bolt.

[0015] The torque converter cover wheel, the torque converter spline, the friction plate back plate and the torque converter pump wheel are fixedly connected by second bolts.

[0016] The vertical upper end of the turbine hub is fixedly connected to the torsional vibration damper via a third bolt.

[0017] The vertical lower end of the turbine hub is fixedly connected to the torque converter turbine by a fourth bolt.

[0018] The connecting plate and the torque converter guide wheel are fixed by rivets.

[0019] A sealing ring is arranged between the torque converter cover wheel and the locking piston.

[0020] An auxiliary tooling is used to assemble the torque converter assembly, including a supporting auxiliary part and a locking auxiliary part, wherein the supporting auxiliary part includes a cylindrical section and a cylinder section with increased diameters; the locking auxiliary part includes a disc, a groove is provided at the center of the disc, a boss is provided at the center of the groove, a through hole is provided on the boss, and four cross plates are provided at equal intervals on the outer edge of the disc.

[0021] A transmission housing assembly comprises a torque converter housing, wherein a turbine shaft is arranged at the center of the torque converter housing; a turbine shaft gasket mounting surface is provided at the top of the turbine shaft, and a torque converter housing stop surface is provided on the upper portion of the torque converter housing.

[0022] A method for assembling a torque converter, assembling the torque converter assembly into the transmission housing assembly based on the auxiliary tooling, specifically comprising the following steps:

[0023] Step 1: Place the locking auxiliary disc on the turbine shaft gasket mounting surface of the upper end surface of the turbine shaft, so that the boss contacts the upper end surface of the turbine shaft and the through hole of the locking auxiliary is aligned with the threaded hole of the turbine shaft;

[0024] Step 2: Screw the locking nut into the through hole of the locking auxiliary component and the threaded hole of the turbine shaft and lock it;

[0025] Step 3, measuring the distance m1, mm, between the stop surface of the torque converter housing and the upper surface of the locking auxiliary component;

[0026] Step 4: Calculate the distance A1 between the stopper surface of the torque converter housing and the installation surface of the turbine shaft gasket, mm;

[0027] A1=m1-L1

[0028] in:

[0029] L1 is the thickness of the locking auxiliary component, mm;

[0030] Step 5, placing the supporting auxiliary member on the locking auxiliary member, so that the cylindrical section of the supporting auxiliary member faces upward and the center of the cylindrical section is coaxial with the center of the locking auxiliary member;

[0031] Step 6, slowly hoisting the torque converter assembly above the supporting auxiliary component, and then slowly lowering it;

[0032] Step 7: After the torque converter assembly is lowered into place, measure the distance m2, mm, between the installation surface of the torque converter and the upper surface of the supporting auxiliary component;

[0033] Step 8, calculating the distance A2 between the lower surface of the torque converter locking plate and the mounting surface of the torque converter, mm;

[0034] A2=L2-m2

[0035] in:

[0036] L2 is the distance between the shoulder surface of the supporting auxiliary part and the upper surface of the supporting auxiliary part, mm;

[0037] Step nine, calculating and adjusting the thickness D of the gasket;

[0038] D=H-A1-A2

[0039] in:

[0040] H is the distance between the stop surface of the torque converter housing and the installation surface of the torque converter after the torque converter is normally installed, mm;

[0041] Step 10, measuring the distance d between the turbine shaft gasket installation surface and the turbine shaft upper end surface, and determining whether the thickness D of the adjustment gasket is greater than d, if so, selecting an adjustment gasket with a thickness of D, and proceeding to step 11; otherwise, during assembly, the torque converter assembly directly contacts the turbine shaft upper end surface, and no adjustment gasket is required;

[0042] Step 11, slowly lift the torque converter assembly, remove the supporting auxiliary parts, loosen the locking nut and remove the locking nut; remove the locking auxiliary parts, place the adjusting gasket on the turbine shaft gasket mounting surface, and make the center hole of the adjusting gasket coaxial with the center hole of the turbine shaft gasket mounting surface on the turbine shaft;

[0043] Step 12, slowly lower the torque converter assembly, pass the locking nut through the torque converter cover wheel, the torque converter locking plate and the adjusting gasket in sequence, connect and lock the locking nut with the threaded hole of the turbine shaft; and install the oil sealing nut on the top of the torque converter cover wheel;

[0044] Step 13, measure the distance h between the stopper surface of the torque converter housing and the installation surface of the torque converter. If the measured value h satisfies the following formula, the assembly is qualified. Otherwise, the assembly is unqualified. Remove the oil sealing nut and return to step 7.

[0045] h≤H.

[0046] Compared with the prior art, the present invention has the following beneficial technical effects:

[0047] (I) The assembly method of the present invention does not require reverse measurement of the torque converter assembly, thereby avoiding major safety hazards during tooling and flipping due to the large weight and volume of the torque converter itself; it also improves the assembly efficiency during the assembly process, ensures the consistency of the assembly method, and further ensures the consistency of the hydraulic transmission assembly.

[0048] (II) In the present invention, only two direct measurements are required during the torque converter assembly process to measure m1 and m2 respectively, and the gasket thickness required during the assembly process can be calculated. In addition, during the two measurements, the reference for each measurement remains consistent without any dimensional conversion or equivalence. All errors in the measurement process come only from these two measurements, and the calculated values ​​A1 and A2 required for gasket selection are also only related to m1 and m2. In the actual operation process, optimization means such as taking the average value through multiple measurements can be used to avoid the accumulation of tolerances caused by indirect multiple measurements.

[0049] (III) The tooling in the present invention is universal and can be used to assemble all torque converter assemblies of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a cross-sectional structural diagram of the hydraulic torque converter in the present invention;

[0051] Figure 2 It is a schematic diagram of the structure of the supporting auxiliary member in the present invention;

[0052] Figure 3 It is a structural schematic diagram of the locking auxiliary component in the present invention;

[0053] Figure 4 It is a structural diagram of the assembly process of the hydraulic torque converter in the present invention;

[0054] Figure 5 It is a partial enlarged view of the assembly position of the adjustment gasket in the present invention;

[0055] Figure 6 This is a structural diagram of the torque converter of the present invention after assembly.

[0056] 1-Torque converter turbine, 2-Torque converter guide wheel, 3-Torque converter pump wheel, 4-First gap, 5-Second gap, 6-Third gap, 7-Torque converter locking plate, 8-Torque converter cover wheel, 9-Fourth gap, 11-Support auxiliary part, 12-Locking auxiliary part, 13-Torque converter housing, 14-Turbine shaft, 15-Locking nut, 16-Torque converter housing stop surface, 17-Turbine shaft gasket installation surface, 19- Torque converter mounting surface, 22-oil sealing nut, 23-adjusting gasket, 24-torsion damper, 25-torque converter spline, 26-locking clutch, 27-locking piston, 28-friction plate back plate, 29-second bolt, 30-turbine hub, 31-third bolt, 32-fourth bolt, 33-guide wheel seat, 34-one-way clutch, 35-rivet, 36-drive tooth, 37-first bolt, 38-connecting plate.

[0057] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0058] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0059] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0060] The present invention provides a hydraulic torque converter assembly, comprising a hydraulic torque converter cover wheel 8, a hydraulic torque converter spline keypad 25, a friction plate back plate 28 and a hydraulic torque converter pump wheel 3 which are fixedly connected in sequence; a driving tooth 36 is fixedly connected to the bottom end of the hydraulic torque converter pump wheel 3; the hydraulic torque converter cover wheel 8, the hydraulic torque converter spline keypad 25, the friction plate back plate 28, the hydraulic torque converter pump wheel 3 and the driving tooth 36 form a first cavity, and a coaxial hydraulic torque converter locking plate 7, a turbine hub 30 and a guide wheel seat 33 are sequentially arranged at the center of the first cavity;

[0061] The vertical upper end of the turbine hub 30 is fixedly connected to the torsion damper 24, and the friction plate group 26 arranged on the radial outer side of the torsion damper 24 is connected to the torque converter spline 25; the vertical lower end of the turbine hub 30 is fixedly connected to the torque converter turbine 1;

[0062] The outer side of the guide wheel seat 33 is sleeved with a one-way clutch 34, and the one-way clutch 34 and the guide wheel seat 33 are circumferentially fixed by a connecting plate 38, and the torque converter guide wheel 2 is fixedly connected to the connecting plate 38;

[0063] There is a first gap 4 between the torque converter turbine 1 and the torque converter guide wheel 2; there is a second gap 5 between the torque converter guide wheel 2 and the torque converter pump wheel 3; there is a third gap 6 between the torque converter turbine 1 and the torque converter pump wheel 3; there is a fourth gap 9 between the torque converter cover wheel 8 and the torque converter locking plate 7;

[0064] A locking piston 27 is sleeved on the bottom of the torque converter cover wheel 8 , the top of the locking piston 27 contacts the torque converter cover wheel 8 , and the bottom of the locking piston 27 contacts the top of the friction plate group 26 .

[0065] In the above technical solution, when the piston chamber of the locking piston 27 is pressure-free, the torque converter spline 25 and the friction plate back plate 28 transmit the torque output by the engine to the torque converter pump wheel 3, and then the torque input by the torque converter pump wheel 3 is changed according to the actual working conditions and transmitted to the transmission input shaft at the rear end through the action of the torque converter guide wheel 2 and the torque converter turbine 1, that is, the so-called torque conversion function of the torque converter is realized; when the piston chamber of the locking piston 27 is pressurized, the locking clutch 26 is pressed, so that the torque output by the engine can be directly transmitted to the turbine hub 30 fixedly connected to the torque converter turbine 1 through the torque converter cover wheel 8 and the torsional damper 24, and the torque of the engine is directly transmitted to the transmission input shaft at the rear end. At this time, the torque converter has no torque conversion function and only serves as a transmission component of the engine power.

[0066] The bottom end of the torque converter pump wheel 3 is fixedly connected to the driving tooth 36 via a first bolt 37 .

[0067] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0068] The torque converter cover wheel 8 , the torque converter spline 25 , the friction plate back plate 28 and the torque converter pump wheel 3 are fixedly connected by a second bolt 29 .

[0069] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0070] The vertical upper end of the turbine hub 30 is fixedly connected to the torsional vibration damper 24 via a third bolt 31 .

[0071] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0072] The vertical lower end of the turbine hub 30 is fixedly connected to the torque converter turbine 1 by a fourth bolt 32 .

[0073] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0074] The connecting plate 38 is fixed to the torque converter stator 2 by rivets 35 .

[0075] In the above technical solution, the rivet connection is convenient for installation and disassembly.

[0076] A sealing ring is provided between the torque converter cover wheel 8 and the locking piston 27 .

[0077] In the above technical solution, the sealing ring is used to prevent the oil from leaking therefrom during operation.

[0078] The present invention provides an auxiliary tooling for assembling a torque converter assembly, comprising a supporting auxiliary part 11 and a locking auxiliary part 12, wherein the supporting auxiliary part 11 comprises a cylindrical section 1101 with increased diameters and a cylinder section 1102; the locking auxiliary part 12 comprises a disc 1201, a groove 1202 is provided at the center of the disc 1201, a boss 1203 is provided at the center of the groove 1202, a through hole 1204 is provided on the boss 1203, and four horizontal plates 1205 are provided at equal intervals on the outer edge of the disc 1201.

[0079] In the above technical solution, during the falling process, due to the supporting effect of the supporting auxiliary part 11, the first gap 4, the second gap 5, the third gap 6 and the fourth gap 9 are eliminated; the locking auxiliary part 12 is used to support the torque converter assembly and the supporting auxiliary part 11, and to provide a measurement reference for subsequent measurements.

[0080] In addition, the tooling is universal and can be used to assemble all torque converter assemblies of similar products.

[0081] The present invention provides a transmission housing assembly, including a torque converter housing 13, at the center of which a turbine shaft 14 is arranged; a turbine shaft gasket mounting surface 17 is provided on the top of the turbine shaft 14, and a torque converter housing stop surface 16 is provided on the upper portion of the torque converter housing 13.

[0082] The present invention provides a method for assembling a hydraulic torque converter, which assembles the hydraulic torque converter assembly into a transmission housing assembly based on an auxiliary tool, and specifically includes the following steps:

[0083] Step 1: Place the disc 1201 of the locking auxiliary member 12 on the turbine shaft gasket mounting surface 17 of the upper end surface of the turbine shaft 14, so that the boss 1203 contacts the upper end surface of the turbine shaft 14 and the through hole 1204 of the locking auxiliary member 12 is aligned with the threaded hole of the turbine shaft 14;

[0084] Step 2: Screw the locking nut 15 into the through hole 1204 of the locking auxiliary component 12 and the threaded hole of the turbine shaft 14 and lock them;

[0085] Step 3, measuring the distance m1 between the stop surface 16 of the torque converter housing and the upper surface of the locking auxiliary component 12, mm;

[0086] Step 4, calculate the distance A1 between the torque converter housing stopper surface 16 and the turbine shaft gasket mounting surface 17, mm;

[0087] A1=m1-L1

[0088] in:

[0089] L1 is the thickness of the locking auxiliary component 12, mm;

[0090] Step 5, place the supporting auxiliary member 11 on the locking auxiliary member 12, so that the cylindrical section 1101 of the supporting auxiliary member 11 faces upward and the center of the cylindrical section 1102 is coaxial with the center of the locking auxiliary member 12;

[0091] Step 6: slowly hoist the torque converter assembly above the supporting auxiliary member 11, and then slowly lower it;

[0092] Step 7: After the torque converter assembly falls into place, measure the distance m2 (mm) between the installation surface 19 of the torque converter and the upper surface of the supporting auxiliary member 11;

[0093] Step 8, calculating the distance A2 between the lower surface of the torque converter locking plate 7 and the torque converter mounting surface 19, mm;

[0094] A2=L2-m2

[0095] in:

[0096] L2 is the distance between the shoulder surface of the supporting auxiliary member 11 and the upper surface of the supporting auxiliary member 11, mm;

[0097] Step nine, calculating and adjusting the thickness D of the gasket 23;

[0098] D=H-A1-A2

[0099] in:

[0100] H is the distance between the stop surface 16 of the torque converter housing and the installation surface 19 of the torque converter after the torque converter is normally installed, mm;

[0101] Step 10, measuring the distance d between the turbine shaft gasket mounting surface 17 and the upper end surface of the turbine shaft 14, and determining whether the thickness D of the adjusting gasket 23 is greater than d, if so, selecting the adjusting gasket 23 with a thickness of D, and proceeding to step 11; otherwise, during assembly, the torque converter assembly directly contacts the upper end surface of the turbine shaft 14, and no adjusting gasket is required;

[0102] Step 11, slowly lift the torque converter assembly, remove the supporting auxiliary part 11, loosen the locking nut 15 and remove the locking nut 15; remove the locking auxiliary part 12, put the adjusting gasket 23 on the turbine shaft gasket mounting surface 17, and make the center hole of the adjusting gasket 23 coaxial with the center hole of the turbine shaft gasket mounting surface 17 on the turbine shaft 14;

[0103] Step 12: slowly lower the torque converter assembly, pass the locking nut 15 through the torque converter cover wheel 8, the torque converter locking plate 7 and the adjusting gasket 23 in sequence, connect and lock the locking nut 15 with the threaded hole of the turbine shaft 14; and install the oil sealing nut 22 on the top of the torque converter cover wheel 8;

[0104] Step 13, measuring the distance h between the stopper surface 16 of the torque converter housing and the installation surface 19 of the torque converter. If the measured value h satisfies the following formula, the assembly is qualified. Otherwise, the assembly is unqualified, the oil sealing nut 22 is removed, and the process returns to step 7.

[0105] h≤H.

[0106] In the above technical solution, only two direct measurements are required during the torque converter assembly process to measure m1 and m2 respectively, and the gasket thickness required during the assembly process can be calculated. In addition, during the two measurements, the reference for each measurement remains consistent without any size conversion or equivalence. All errors in the measurement process only come from these two measurements, and the calculated values ​​A1 and A2 required for gasket selection are only related to m1 and m2. In the actual operation process, optimization methods such as taking the average value through multiple measurements can be used to avoid the accumulation of tolerances caused by indirect multiple measurements.

[0107] The assembly method of this scheme does not require reverse measurement of the torque converter assembly, thus avoiding major safety hazards caused by the large weight and volume of the torque converter itself during tooling and flipping; it also improves the assembly efficiency during the assembly process, ensures the consistency of the assembly method, and further ensures the consistency of the hydraulic transmission assembly.

[0108] During the falling process, due to the supporting effect of the supporting auxiliary part 11, the first gap 4, the second gap 5, the third gap 6 and the fourth gap 9 are eliminated; the locking auxiliary part 12 is used to support the torque converter assembly and the supporting auxiliary part 11, and to provide a measurement reference for subsequent measurements.

[0109] The calculated D value is floated with a tolerance of 0.3 above and below, which is the thickness range of the adjustment gasket 23 to be installed.

Claims

1. A torque converter assembly, characterized in that: The invention comprises a torque converter cover wheel (8), a torque converter spline (25), a friction plate back plate (28) and a torque converter pump wheel (3) which are fixedly connected in sequence; a driving tooth (36) is fixedly connected to the bottom end of the torque converter pump wheel (3); the torque converter cover wheel (8), the torque converter spline (25), the friction plate back plate (28), the torque converter pump wheel (3) and the driving tooth (36) form a first cavity; a coaxial torque converter locking disk (7), a turbine hub (30) and a guide wheel seat (33) are arranged in sequence at the center of the first cavity; The vertical upper end of the turbine hub (30) is fixedly connected to a torsion damper (24), and the friction plate group (26) arranged radially outside the torsion damper (24) is connected to the torque converter spline (25); the vertical lower end of the turbine hub (30) is fixedly connected to a torque converter turbine (1); The outer side of the guide wheel seat (33) is sleeved with a one-way clutch (34), the one-way clutch (34) and the guide wheel seat (33) are circumferentially fixed by a connecting plate (38), and the connecting plate (38) is fixedly connected to the torque converter guide wheel (2); There is a first gap (4) between the torque converter turbine (1) and the torque converter guide wheel (2); there is a second gap (5) between the torque converter guide wheel (2) and the torque converter pump wheel (3); there is a third gap (6) between the torque converter turbine (1) and the torque converter pump wheel (3); and there is a fourth gap (9) between the torque converter cover wheel (8) and the torque converter locking plate (7); A locking piston (27) is sleeved on the bottom of the torque converter cover wheel (8), the top of the locking piston (27) contacts the torque converter cover wheel (8), and the bottom of the locking piston (27) contacts the top of the friction plate group (26).

2. The torque converter assembly according to claim 1, characterized in that: The bottom end of the torque converter pump wheel (3) is fixedly connected to the driving tooth (36) via a first bolt (37).

3. The torque converter assembly according to claim 1, characterized in that: The torque converter cover wheel (8), the torque converter spline (25), the friction plate back plate (28) and the torque converter pump wheel (3) are fixedly connected via a second bolt (29).

4. The torque converter assembly according to claim 1, characterized in that: The vertical upper end of the turbine hub (30) is fixedly connected to the torsional vibration damper (24) via a third bolt (31).

5. The torque converter assembly according to claim 1, characterized in that: The vertical lower end of the turbine hub (30) is fixedly connected to the torque converter turbine (1) via a fourth bolt (32).

6. The torque converter assembly according to claim 1, characterized in that: The connecting plate (38) and the torque converter guide wheel (2) are fixed via rivets (35).

7. The torque converter assembly according to claim 1, characterized in that: A sealing ring is provided between the torque converter cover wheel (8) and the locking piston (27).

8. An auxiliary tooling, characterized in that: Used for assembling the torque converter assembly according to any one of claims 1 to 7, comprising a supporting auxiliary part (11) and a locking auxiliary part (12), wherein the supporting auxiliary part (11) comprises a cylindrical section (1101) and a cylindrical section (1102) with increased diameters; the locking auxiliary part (12) comprises a disk (1201), a groove (1202) is provided at the center of the disk (1201), a boss (1203) is provided at the center of the groove (1202), a through hole (1204) is provided on the boss (1203), and four cross plates (1205) are provided at equal intervals on the outer edge of the disk (1201).

9. A transmission housing assembly, characterized in that: The invention comprises a torque converter housing (13), wherein a turbine shaft (14) is arranged at the center of the torque converter housing (13); a turbine shaft gasket mounting surface (17) is provided at the top of the turbine shaft (14), and a torque converter housing stop surface (16) is provided on the upper side of the torque converter housing (13).

10. A method for assembling a torque converter, characterized in that: Based on the auxiliary tooling of claim 8, assembling the torque converter assembly of any one of claims 1 to 7 into the transmission housing assembly of claim 9 specifically comprises the following steps: Step 1: Place the locking auxiliary component (12) disc (1201) on the turbine shaft gasket mounting surface (17) on the upper end surface of the turbine shaft (14), so that the boss (1203) contacts the upper end surface of the turbine shaft (14) and the through hole (1204) of the locking auxiliary component (12) and the threaded hole of the turbine shaft (14) are aligned; Step 2: Screw the locking nut (15) into the through hole (1204) of the locking auxiliary component (12) and the threaded hole of the turbine shaft (14) and lock them; Step 3, measuring the distance m1 between the stop surface (16) of the torque converter housing and the upper surface of the locking auxiliary component (12), mm; Step 4, calculate the distance A1 between the torque converter housing stopper surface (16) and the turbine shaft gasket mounting surface (17), mm; A1=m1-L1 in: L1 is the thickness of the locking auxiliary component (12), mm; Step 5, placing the supporting auxiliary member (11) on the locking auxiliary member (12), so that the cylindrical section (1101) of the supporting auxiliary member (11) faces upward and the center of the cylindrical section (1102) is coaxial with the center of the locking auxiliary member (12); Step 6, slowly hoisting the torque converter assembly above the supporting auxiliary component (11), and then slowly lowering it; Step 7, after the torque converter assembly falls into place, measure the distance m2, mm, between the installation surface (19) of the torque converter and the upper surface of the supporting auxiliary member (11); Step 8, calculating the distance A2 between the lower surface of the torque converter locking plate (7) and the torque converter mounting surface (19), mm; A2=L2-m2 in: L2 is the distance between the shoulder surface of the supporting auxiliary part (11) and the upper surface of the supporting auxiliary part (11), mm; Step nine, calculating the thickness D of the adjustment gasket (23); D=H-A1-A2 in: H is the distance between the stop surface (16) of the torque converter housing and the installation surface (19) of the torque converter after the torque converter is normally installed, in mm; Step 10, measuring the distance d between the turbine shaft gasket mounting surface (17) and the upper end surface of the turbine shaft (14), and determining whether the thickness D of the adjustment gasket (23) is greater than d; if so, selecting the adjustment gasket (23) with a thickness of D, and proceeding to step 11; otherwise, during assembly, the torque converter assembly directly contacts the upper end surface of the turbine shaft (14), and no adjustment gasket is required; Step 11, slowly lift the torque converter assembly, remove the supporting auxiliary component (11), loosen the locking nut (15) and remove the locking nut (15); remove the locking auxiliary component (12), place the adjusting gasket (23) on the turbine shaft gasket mounting surface (17), and make the center hole of the adjusting gasket (23) coaxial with the center hole of the turbine shaft gasket mounting surface (17) on the turbine shaft (14); Step 12, slowly lower the torque converter assembly, pass the locking nut (15) through the torque converter cover wheel (8), the torque converter locking plate (7) and the adjusting gasket (23) in sequence, connect and lock the locking nut (15) with the threaded hole of the turbine shaft (14); and install the oil sealing nut (22) on the top of the torque converter cover wheel (8); Step 13, measuring the distance h between the stop surface (16) of the torque converter housing and the installation surface (19) of the torque converter. If the measured value h satisfies the following formula, the assembly is qualified. Otherwise, the assembly is unqualified. Remove the oil sealing nut (22) and return to step 7. h≤H.

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