CN204164264U - A kind of flexible link of reasonable match system - Google Patents

Abstract

The utility model belongs to driving engine technical field, relates to the flexible link of a kind of reasonable match system, and the flexible link of a kind of reasonable match system of proposition, includes transition flywheel casing (7) and transition flywheel assembly; Transition flywheel assembly includes transition flywheel I (3), transition flywheel II (2), flywheel flange (6), flexible plate group (4) and spacer shell (5).In the utility model, all parts are located by Spielpassung, without the need to adjusting centering, solve the problem of centering difficulty when torque-converters is installed, simple installation.2, the flexible plate group structural design of larger area is adopted; there is larger axial flexibility; effectively can absorb the larger axial displacement of torque-converters; the end thrust of torque-converters is avoided to be directly passed to bent axle; prevent the fault such as bent axle seize, thrust ring wearing and tearing, Bearing score caused because continuing larger end thrust effect from occurring, thus available protecting motor.

Description

A flexible connection device for an engine and a transmission system

technical field

The utility model belongs to the technical field of engine transmission, and mainly relates to a flexible connection device for an engine and a transmission system.

Background technique

In construction machinery (such as fracturing vehicles), the engine needs to transmit power to the driving wheels or other steering mechanisms through the transmission system to achieve power output. Since the fracturing vehicle needs to have the characteristics of high pressure, large displacement, wide range of changes, reliable operation and continuous operation, in order to meet these technical requirements, a large number of hydraulic mechanical transmission systems are used in fracturing vehicles. The transmission system mainly includes a hydraulic transmission element (torque converter) and a mechanical transmission element (planetary gear box), wherein the torque converter is connected to the engine, and the planetary gear box is connected to the plunger pump (power output mechanism). In the current connection method of the fracturing vehicle, the engine flywheel needs to be connected to a long connecting shaft, and the end of the connecting shaft is connected to the torque converter flywheel through a flexible piece; the transition flywheel housing with a stepped structure is adopted, and it is installed manually Adjust the centering to ensure its coaxiality. The design structure has the following problems: 1. Due to the limited size of the chassis, the distance between the engine and the torque converter is small, the long connecting shaft and the large structural weight make it difficult to adjust the centering when the torque converter is installed. 2. Since the axial clearance of the crankshaft of the engine is small, the axial clearance of the flywheel of the torque converter is relatively large. During the torque transmission process of the torque converter, a large axial thrust will be transmitted to the flywheel of the torque converter, causing it to generate Axial displacement. However, the designed flexible sheet has a small area and high stiffness, and cannot effectively absorb the axial thrust of the torque converter flywheel. Therefore, most of the axial thrust is transmitted to the crankshaft after being transmitted to rigid components such as the engine flywheel and the engine flywheel flange. Since the rigid element has no cushioning effect, the continuous axial thrust transmitted to the crankshaft will cause the crankshaft to lock the shaft, wear the thrust ring, pull tiles and other faults. the

Utility model content

The utility model proposes a flexible connection device between the engine and the transmission system in order to solve many problems in the installation of the engine and the torque converter. the

The utility model completes its inventive task through the following technical solutions:

A flexible connection device for an engine and a transmission system, comprising a transition flywheel housing and a transition flywheel assembly; the transition flywheel housing is an annular shell with a stepped structure, a large end surface has a boss, and the outer circle of the boss is in line with the The inner hole of the flywheel housing of the engine is matched with the gap, and the buckle is positioned; a number of light holes are evenly arranged on the large end surface, and the transition flywheel housing is connected with the engine flywheel housing with bolts; the inner hole of the small end surface of the transition flywheel housing is connected with the end surface of the torque converter flywheel housing The outer circle of the boss has a clearance fit, and a number of threaded holes are evenly arranged on the small end surface, and the transition flywheel housing is connected with the pitch changer flywheel housing with bolts; the transition flywheel assembly includes transition flywheel I, transition flywheel II, and flywheel flange , flexible sheet group and transition sleeve; the transition flywheel I is a ring structure, and there is a ring of bosses in the middle of the ring, and the inner surface of the boss is in clearance with the outer circle of the flexible sheet group; the inner and outer planes of the boss are both A number of threaded holes are distributed, and the transition flywheel I is connected with the flexible sheet group and the transition flywheel II with bolts; the transition flywheel II is a ring-shaped shell with a stepped structure, and several light holes evenly distributed on the large end surface pass through the bolts. It is connected with the transition flywheel I; there is a round hole in the center of the small end face, which is matched with the outer circle of the front end of the torque converter flywheel, and a number of light holes are evenly distributed on the edge of the round hole, which is connected with the torque converter flywheel through bolts; the flywheel flange is on the engine Parts, used to connect the crankshaft and the transition sleeve, the flexible sheet group, through the positioning pin and the central hole and the engine crankshaft positioning, a number of light holes evenly distributed around the central hole, connected to the engine crankshaft by bolts; the flexible sheet group is composed of A plurality of very thin ring-shaped spring steel sheets are overlapped, the center round hole of the flexible sheet group is in clearance with the flywheel flange, and a number of light holes are evenly distributed on the edge of the round hole, and the flexible sheet group is connected to the flywheel flange and the transition sleeve with bolts. Connection; the transition sleeve is ring-shaped with a stepped structure, and the inner circle of the large end fits with the flange boss of the flywheel in a gap, and is fixed with the flexible sheet assembly after being pressed; the central hole of the small end is connected with the front end shaft head of the torque converter Clearance fit positioning, play the role of shaft alignment.

The device of the utility model has the following characteristics: 1. All parts are positioned through clearance fit, without adjusting the centering, which solves the problem of difficult centering during installation of the torque converter, and is easy to install. 2. It adopts a large-area flexible sheet group structure design, which has large axial flexibility, can effectively absorb the large axial displacement of the torque converter, and avoids the axial thrust of the torque converter from being directly transmitted to the crankshaft, preventing Faults such as crankshaft lock, thrust ring wear, and pull caused by continuous large axial thrust, so as to effectively protect the engine. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

In the figure: 1. Engine flywheel housing, 2. Transition flywheel II, 3. Transition flywheel I, 4. Flexible sheet group, 5. Transition sleeve, 6. Flywheel flange, 7. Transition flywheel housing, 8. Torque converter Flywheel housing, 9, torque converter flywheel. the

detailed description

In conjunction with the accompanying drawings and specific embodiments, the utility model is further described:

As shown in Figure 1, a flexible connection device between an engine and a transmission system includes a transition flywheel housing and a transition flywheel assembly; the transition flywheel housing 7 is an annular shell with a stepped structure and a large end surface platform, the outer circle of the boss is matched with the inner hole of the engine flywheel housing 1, and a number of light holes are evenly arranged on the large end surface, and the transition flywheel housing 7 is connected with the engine flywheel housing 1 with bolts; the inner hole of the small end surface of the transition flywheel housing 7 Cooperate with the outer circle of the end surface boss of the torque converter flywheel housing 8 with a gap, and evenly arrange a number of threaded holes on the small end surface, and connect the transition flywheel housing 7 and the variable pitch flywheel housing 8 with bolts. The transition flywheel assembly includes a transition flywheel I3, a transition flywheel II2, a flywheel flange 6, a flexible sheet group 4 and a transition sleeve 5; the transition flywheel I3 is a ring structure, and there is a The ring boss, the inner surface of the boss is matched with the outer circle of the flexible sheet group 4 in clearance, and a number of threaded holes are evenly distributed on the two sides of the boss, and the transition flywheel I3 is connected with the flexible sheet group 4 and the transition flywheel II2 with bolts. The transition flywheel II2 is a ring-shaped shell with a stepped structure. Several light holes evenly distributed on the large end surface are connected to the transition flywheel I3 through bolts; , a number of light holes are evenly distributed on the small end surface, and are connected with the flywheel 9 of the torque converter through bolts; the flywheel flange 6 is a part on the engine, and is used to connect the crankshaft with the transition sleeve 5 and the flexible sheet group 4, and through the positioning pin And the central hole is positioned with the crankshaft of the engine, a number of light holes are evenly distributed around the central hole, and are connected to the crankshaft of the engine by bolts; the flexible sheet group 4 is composed of a plurality of very thin annular spring steel sheets overlapping, The central circular hole is in clearance fit with the flywheel flange 6, and a number of light holes are evenly distributed on the edge of the circular hole, and the flexible sheet group 4 is connected with the flywheel flange 6 and the transition sleeve 5 with bolts. The transition sleeve 5 is ring-shaped with a stepped structure, and the inner circle of the big end fits with the flange 6 of the flywheel flange for positioning and pressing and then is fixed with the flexible sheet assembly 4; the central hole of the small end is connected with the front end of the flywheel 9 of the torque converter. The clearance of the shaft head is matched with the positioning to play the role of shafting centering.

As shown in Figure 1, during the assembly process of the torque converter in the engine and transmission system, the engine flywheel housing 1 and the torque converter flywheel housing 8 with different interface diameters and the transition flywheel housing (7) connecting the two flywheel housings, three They are positioned through clearance fit; the flywheel flange 6 is directly connected to the engine crankshaft; a flexible sheet group 4 is arranged between the flywheel flange 6 and the transition flywheel I3, and the flexible sheet group 4 and the transition flywheel I3 are positioned through clearance fit The transition flywheel II2 is connected with the torque converter flywheel 9 and positioned through clearance fit; the transition flywheel I3 and the transition flywheel II2 are fixed by bolts, and one end of the transition sleeve 5 is fixed with the flexible sheet group 4 and the flywheel flange 6 by bolts and passed through Clearance fit positioning, the hole sleeve at the other end is on the shaft head of the torque converter flywheel 9, and through clearance fit positioning, there is a large gap between the small end face of the transition sleeve 5 and the end face of the torque converter flywheel 9, which is larger than the torque converter flywheel 9 axial displacement. The centering of the shaft system is ensured by the clearance fit between the center hole at the small end of the transition sleeve 5 and the shaft head at the front end of the torque converter flywheel 9, and no adjustment is required; when installing the transition flywheel and the transition flywheel housing, they are positioned through clearance fit to ensure Assembly accuracy reduces the difficulty of installation and adjustment. the

A flexible connection method between the engine and the transmission system: during the operation of the engine, the torque converter in the transmission system transmits torque outward, and during this process, a relatively large axial thrust is transmitted to the flywheel 9 of the torque converter , since there is a large gap between the end face of the torque converter flywheel 9 and the small end face of the transition sleeve 5, the axial thrust will sequentially push the torque converter flywheel 9, transition flywheel I3 and transition flywheel II2 along the axis to the direction of the engine to generate an axial thrust Displacement; due to the arrangement of the flexible sheet group 4 between the flywheel flange 6 and the transition flywheel I3, the axial displacement generated by the torque converter flywheel 9, the transition flywheel I3 and the transition flywheel II2 causes a large deformation of the flexible sheet group 4 ; Since the flexible sheet group 4 has a larger area and greater axial flexibility, the deformation of the flexible sheet group 4 absorbs the axial displacement of the above-mentioned parts and acts as a buffer. Since the flywheel flange 6 is directly connected to the crankshaft of the engine, the axial thrust transmitted to the crankshaft through the flywheel flange 6 is finally transformed into the elastic force generated by the axial deformation of the flexible sheet group 4, which is much smaller than that produced by the flywheel of the torque converter. The axial thrust received by the engine can protect the crankshaft of the engine, and prevent the occurrence of faults such as crankshaft lock, thrust ring wear, and pulling caused by continuous large axial thrust. the

Claims (1)

1. A flexible connection device between an engine and a transmission system, characterized in that it includes a transition flywheel housing (7) and a transition flywheel assembly; the transition flywheel housing (7) is an annular shell with a stepped structure , There is a boss on the big end surface, the outer circle of the boss fits with the inner hole of the engine flywheel housing in clearance, and a number of light holes are evenly arranged on the big end surface, and the transition flywheel housing (7) is connected with the engine flywheel housing (1) by bolts; the transition The inner hole of the small end face of the flywheel housing (7) is in clearance fit with the outer circle of the boss on the end face of the torque converter flywheel housing, and several threaded holes are evenly arranged on the small end face, and the transition flywheel housing is connected with the pitch converter flywheel housing (8) by bolts ; The transition flywheel assembly includes transition flywheel I (3), transition flywheel II (2), flywheel flange (6), flexible sheet group (4) and transition sleeve (5); the transition flywheel I ( 3) It is a ring structure, and there is a circle of bosses in the middle of the ring, and the inner surface of the bosses is matched with the outer circle of the flexible sheet group; a number of threaded holes are distributed on both sides of the bosses, and the transition flywheel I ( 3) It is connected with the flexible sheet group (4) and the transition flywheel II (2); the transition flywheel II (2) is a ring-shaped shell with a stepped structure, and several light holes evenly distributed on the large end surface pass through the bolts It is connected with the transition flywheel I (3); there is a circular hole in the center of the small end face, which is matched with the outer circle of the front end of the torque converter flywheel, and a number of light holes are evenly distributed on the small end face, and connected with the torque converter flywheel (9) by bolts; The flywheel flange (6) is a part on the engine, used to connect the crankshaft with the transition sleeve (5) and the flexible sheet group (4), and is positioned with the engine crankshaft through the positioning pin and the center hole, and several light holes are evenly distributed around the center hole , connected to the crankshaft of the engine through bolts; the flexible sheet group (4) is composed of a plurality of overlapping thin ring-shaped spring steel sheets, and the central round hole of the flexible sheet group is in clearance fit with the flywheel flange (6), and the round hole A number of light holes are evenly distributed on the edge, and the flexible sheet group (4) is connected with the flywheel flange (6) and the transition sleeve (5) with bolts; The circle fits with the clearance of the flywheel flange boss, and is fixed with the flexible plate assembly (4) after being pressed; the center hole of the small end is positioned with the clearance of the shaft head at the front end of the flywheel of the torque converter, and plays the role of shafting alignment.