Adaptive height connection structure between turbocharger intermediate body and actuator

Abstract

The utility model discloses an adaptive height connection structure of a turbocharger intermediate body and an actuator, comprising an actuator, a first swing arm, a connecting rod, an intermediate body, a rotating shaft, and a second swing arm, wherein the output end of the actuator is connected to the first swing arm, one end of the rotating shaft is rotationally matched with the intermediate body, and the other end of the rotating shaft is welded and fixed with the second swing arm, and further comprising a first connecting component and a second connecting component, wherein one end of the first connecting component is connected to the actuator, and the other end of the first connecting component is spherically matched with one end of the connecting rod to form a movable connection, and one end of the second connecting component is connected to the second swing arm, and the other end of the second connecting component is spherically matched with the other end of the connecting rod to form a movable connection. The utility model can ensure the normal operation of the toggle mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, in particular to an adaptive height connection structure between an intermediate body and an actuator of a turbocharger. Background Art

[0002] For ordinary mechanical turbochargers, in order to adjust the exhaust gas flow of the turbocharger, the intermediate body of the turbocharger is usually connected to an actuator, and the exhaust gas flow is adjusted by the power output by the actuator. The specific connection structure is: a first rocker arm is provided on the actuator, the first rocker arm is fixed on the first connecting shaft, the first connecting shaft is connected to one end of a connecting rod, a second rocker arm is provided on the intermediate body, the second rocker arm is welded to one end of a rotating shaft, the other end of the rotating shaft is rotatably matched with the intermediate body, a second connecting shaft is fixed on the second rocker arm, and the other end of the connecting rod is connected to the second connecting shaft.

[0003] In order to improve the actuator's precise control over the turbine intake flow, the connecting rod and the first and second connecting shafts need to be designed with a shaft hole with a very small gap to reduce the control clearance. For the above-mentioned connection structure, the toggle mechanism composed of the connecting rod, rocker arm, and rotating shaft, because the second rocker arm is welded to the rotating shaft, usually, argon arc welding is used for welding. During the high-temperature welding process, deformation is inevitable. Excessive deformation can easily lead to inflexible operation. Therefore, the design of a small gap has high requirements for welding. After the connecting shaft in the above-mentioned structure is deformed in the height direction of welding, it will be stuck with the connecting rod, which will cause the connecting rod and rocker arm to swing inflexibly during use, especially when the two ends of the connecting rod are not at the same height, it is easy to get stuck. It is almost impossible to adjust the angle of the connecting rod in the height direction. Utility Model Content

[0004] The utility model provides an adaptive height connection structure between an intermediate body of a turbocharger and an actuator. The utility model can ensure the normal action of a toggle mechanism.

[0005] The technical solutions to the above technical problems are as follows:

[0006] An adaptive height connection structure between an intermediate body of a turbocharger and an actuator comprises an actuator, a first swing arm, a connecting rod, an intermediate body, a rotating shaft and a second swing arm, wherein the output end of the actuator is connected to the first swing arm, one end of the rotating shaft is rotationally matched with the intermediate body, and the other end of the rotating shaft is welded and fixed to the second swing arm. The structure also comprises a first connecting component and a second connecting component, wherein one end of the first connecting component is connected to the actuator, and the other end of the first connecting component is spherically matched with one end of the connecting rod to form a movable connection, and one end of the second connecting component is connected to the second swing arm, and the other end of the second connecting component is spherically matched with the other end of the connecting rod to form a movable connection.

[0007] Furthermore, the first connecting component includes a first connecting seat and a first ball head, the first connecting seat is fixed to the first ball head, the first connecting seat is connected to the first swing arm, one end of the connecting rod is provided with a first assembly groove, the inner circumferential surface of the first assembly groove is a cylindrical surface, and after the first ball head and the first assembly groove are clearance-matched, the first connecting component and one end of the connecting rod form a movable connection.

[0008] Furthermore, it also includes a first clamping spring, which is sleeved on the first connecting component. The first assembly groove of the connecting rod is provided with a first clamping groove, and the first clamping spring cooperates with the first clamping groove.

[0009] Furthermore, the second connecting component includes a second connecting seat and a second ball head, the second connecting seat is fixed to the second ball head, the second connecting seat is connected to the second swing arm, the other end of the connecting rod is provided with a second assembly groove, the inner circumferential surface of the second assembly groove is a cylindrical surface, and after the second ball head and the second assembly groove are clearance-matched, the second connecting component and the other end of the connecting rod form a movable connection.

[0010] Furthermore, it also includes a second clamping spring, which is sleeved on the second connecting component. A second clamping groove is provided on the inner wall of the second assembly groove of the connecting rod, and the second clamping spring cooperates with the second clamping groove.

[0011] The advantages of the utility model are: after the first connecting component and the connecting rod form a movable connection through spherical matching, and after the second connecting component and the connecting rod form a movable connection through spherical matching, the connecting rod can be adjusted in height relative to the first connecting component and / or the second connecting component. Therefore, even if the actuator and the toggle mechanism are at different heights, the two mechanisms can still be connected together to ensure that the power output by the actuator enables the toggle mechanism to work normally, and then the toggle mechanism drives the exhaust gas regulating component on the intermediate body to rotate smoothly.

[0012] The utility model can tolerate the deformation amount when the rotating shaft and the second swing arm are welded, and can tolerate greater welding deformation. The allowable welding deformation angle can reach 5 degrees, thereby reducing welding requirements and achieving cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the assembly drawing of the adaptive height connection structure between the turbocharger intermediate body and the actuator.

[0014] Figure 2 For Figure 1 Schematic diagram with the connecting rod and intermediate body hidden on the basis.

[0015] Figure 3 For Figure 2 The schematic diagram of the actuator is hidden on the basis.

[0016] Figure 4A schematic cross-sectional view of the actuator.

[0017] Figure 5 FIG. 4 is a cross-sectional schematic diagram of the actuator in another direction.

[0018] Figure 6 It is a schematic diagram of the connection rod cooperating with the first connection component and the second connection component.

[0019] Figure 7 It is a schematic diagram showing that the connecting rod can be adjusted in height direction during operation.

[0020] Markings in the accompanying drawings:

[0021] Actuator 1, housing 1a, motor 1b, driving gear 1c, driven gear 1d, worm gear 1e, transmission shaft 1f, turbine 1g, first swing arm 2, connecting rod 3, first assembly groove 3a, first clamping groove 3b, second assembly groove 3c, second clamping groove 3d, intermediate body 4, rotating shaft 5, second swing arm 6, first connecting component 7, first connecting seat 7a, first ball head 7b, second connecting component 8, second connecting seat 8a, second ball head 8b, first retaining spring 9, second retaining spring 10. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figures 1 to 7 As shown, the adaptive height connection structure of the turbocharger intermediate body and the actuator of the utility model includes an actuator 1, a first swing arm 2, a connecting rod 3, an intermediate body 4, a rotating shaft 5, a second swing arm 6, a first connecting component 7, and a second connecting component 8. The output end of the actuator 1 is connected to the first swing arm 2. In the utility model, the actuator 1 includes a housing 1a, a motor 1b, a driving gear 1c, a driven gear 1d, a worm rod 1e, a turbine 1g, and a transmission shaft 1f. The motor 1b is installed in the housing 1a. The motor 1b preferably adopts an electric motor. The output end of the motor 1b is fixed to the driving gear 1c, the driving gear 1c is meshed with the driven gear 1d, the driven gear 1d is fixed to the worm rod 1e, the two ends of the worm rod 1e are rotatably matched with the housing 1a, the worm rod 1e is meshed with the turbine 1g, the transmission shaft 1f passes through the worm rod 1e, one end of the transmission shaft 1f is rotatably matched with the housing 1a, and the other end of the transmission shaft 1f extends to the outside of the housing 1a and is fixed to the first swing arm 2.

[0024] One end of the first connecting component 7 is connected to the first swing arm 2. One end of the first connecting component 7 is preferably fixed to the first swing arm 2, for example, by welding or screws. The other end of the first connecting component 7 is spherically matched with one end of the connecting rod 3 to form a movable connection. The first connecting component 7 includes a first connecting seat 7a and a first ball head 7b. The first connecting seat 7a is fixed with the first ball head 7b. The first connecting seat 7a is connected to the first swing arm 2. One end of the connecting rod 3 is provided with a first assembly groove 3a. The inner circumference of the first assembly groove 3a is a cylindrical surface. After the first ball head 7b is clearance-matched with the first assembly groove 3a, the first connecting component 7 is movably connected to one end of the connecting rod 3.

[0025] The first connecting seat 7a is tapered, and the end of the first connecting seat 7a with a smaller outer diameter cooperates with the first assembly groove 3a, so that friction between the first connecting seat 7a and the first assembly groove 3a can be avoided.

[0026] The utility model further includes a first clamping spring 9, which is sleeved on the first connecting member 7, and a first clamping groove 3b is provided in the first assembly groove 3a of the connecting rod 3, and the first clamping spring 9 cooperates with the first clamping groove 3b. In the utility model, the first clamping spring 9 is preferentially sleeved on the first ball head 7b, and an opening is provided on the peripheral surface of the first clamping spring 9, that is, the first clamping spring 9 is a ring with an opening, and the outer diameter of the first ball head 7b is larger than the inner diameter of the first clamping spring 9, and the first clamping spring 9 wraps the first connecting member 7 without being loosened, so that the first connecting member 7 is restricted in the first assembly groove 3a by the first clamping spring 9, and the first connecting member 7 is prevented from being separated from one end of the connecting rod 3.

[0027] One end of the rotating shaft 5 is rotatably matched with the intermediate body 4, and the other end of the rotating shaft 5 is welded and fixed to the second swing arm 6. One end of the second connecting component 8 is connected to the second swing arm 6, and one end of the second connecting component 8 is preferably fixed to the second swing arm 6, for example, by welding or screws, and the other end of the second connecting component 8 is spherically matched with the other end of the connecting rod 3 to form a movable connection.

[0028] The second connecting component 8 includes a second connecting seat 8a and a second ball head 8b. The second connecting seat 8a is fixed to the second ball head 8b, and the second connecting seat 8a is connected to the second swing arm 6. The other end of the connecting rod 3 is provided with a second assembly groove 3c. The inner circumferential surface of the second assembly groove 3c is a cylindrical surface. After the second ball head 8b is clearance-fitted with the second assembly groove 3c, the second connecting component 8 and the other end of the connecting rod 3 form a movable connection.

[0029] The utility model further comprises a second clamping spring 10, which is sleeved on the second connecting member 8. A second clamping groove 3d is provided on the inner wall of the second assembly groove 3c of the connecting rod 3, and the second clamping spring 10 cooperates with the second clamping groove 3d.

[0030] In the utility model, the second retaining spring 109 is preferentially sleeved on the second ball head 8b, and an opening is provided on the circumferential surface of the second retaining spring 10, that is, the second retaining spring 10 is a ring with an opening, and the outer diameter of the second ball head 8b is larger than the inner diameter of the second retaining spring 10. The second retaining spring 10 wraps the second connecting component 8 without loosening, thereby limiting the second connecting component 8 in the second assembly groove 3c through the second retaining spring 10, preventing the second connecting component 8 from being separated from the other end of the connecting rod 3.

Claims

1. An adaptive height connection structure between a turbocharger intermediate body and an actuator, comprising an actuator (1), a first swing arm (2), a connecting rod (3), an intermediate body (4), a rotating shaft (5), and a second swing arm (6), wherein the output end of the actuator (1) is connected to the first swing arm (2), one end of the rotating shaft (5) is rotatably matched with the intermediate body (4), and the other end of the rotating shaft (5) is welded and fixed to the second swing arm (6), characterized in that: The invention also comprises a first connecting component (7) and a second connecting component (8), wherein one end of the first connecting component (7) is connected to the first swing arm (2), and the other end of the first connecting component (7) is movably connected to one end of the connecting rod (3) through spherical fit, and one end of the second connecting component (8) is connected to the second swing arm (6), and the other end of the second connecting component (8) is movably connected to the other end of the connecting rod (3) through spherical fit.

2. The adaptive height connection structure between the turbocharger intermediate body and the actuator according to claim 1, characterized in that: The first connecting component (7) comprises a first connecting seat (7a) and a first ball head (7b); the first connecting seat (7a) is fixed to the first ball head (7b); the first connecting seat (7a) is connected to the first swing arm (2); one end of the connecting rod (3) is provided with a first assembly groove (3a); the inner circumferential surface of the first assembly groove (3a) is a cylindrical surface; after the first ball head (7b) and the first assembly groove (3a) are clearance-matched, the first connecting component (7) and one end of the connecting rod (3) are movably connected.

3. The adaptive height connection structure between the turbocharger intermediate body and the actuator according to claim 2, characterized in that: It also includes a first clamping spring (9), which is sleeved on the first connecting component (7). A first clamping groove (3b) is provided in the first assembly groove (3a) of the connecting rod (3), and the first clamping spring (9) cooperates with the first clamping groove (3b).

4. The adaptive height connection structure between the turbocharger intermediate body and the actuator according to claim 1, characterized in that: The second connecting component (8) comprises a second connecting seat (8a) and a second ball head (8b); the second connecting seat (8a) is fixed to the second ball head (8b); the second connecting seat (8a) is connected to the second swing arm (6); the other end of the connecting rod (3) is provided with a second assembly groove (3c); the inner circumferential surface of the second assembly groove (3c) is a cylindrical surface; after the second ball head (8b) and the second assembly groove (3c) are clearance-matched, the second connecting component (8) and the other end of the connecting rod (3) are movably connected.

5. The adaptive height connection structure between the turbocharger intermediate body and the actuator according to claim 4, characterized in that: It also includes a second retaining spring (10), which is sleeved on the second connecting component (8). A second retaining groove (3d) is provided on the inner wall of the second assembly groove (3c) of the connecting rod (3), and the second retaining spring (10) cooperates with the second retaining groove (3d).

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