Dual-mass flywheel and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and particularly relates to a dual-mass flywheel and a vehicle. A starting gear is connected with a primary flywheel, the driving end of an electromagnetic spring is connected with the primary flywheel through a side plate, the output end of the electromagnetic spring is connected with a secondary flywheel through a driven plate, the side plate is in sliding connection with the driven plate, an electromagnet is arranged on the side plate, a permanent magnet is arranged on the driven plate, and electrodes of the electromagnet and the permanent magnet are opposite. The electromagnetic springs are arranged between the primary gear and the secondary gear, the torsional rigidity of the flywheel can be actively adjusted by adjusting the current intensity of the electromagnetic springs, and the requirement for complex working conditions of a vehicle is met. According to the application, the circumferential spring is matched with the electromagnetic spring, and the limit angular displacement of the radial electromagnetic spring is smaller than the limit compression angle of the circumferential spring, so that the influence of centrifugal force on the circumferential spring is inhibited while a large relative rotation angle is ensured.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular relates to a dual-mass flywheel and a vehicle. Background Art

[0002] During the driving and operation of a truck crane, vibrations of the transmission system and frame caused by engine speed fluctuations are often unavoidable. However, the existing clutch driven plate torsional vibration damper is limited by the clutch space size, has the defects of small working torsional angle and large torsional stiffness, and cannot effectively attenuate the engine torsional vibration. The dual-mass flywheel divides the engine flywheel into two parts, connected by a torsional vibration damper in the middle, greatly increasing the layout space of the vibration damping and buffering components, and can design a larger turning angle and smaller stiffness, overcoming the defects of the clutch driven plate. Therefore, it is necessary to study the application of the dual-mass flywheel technology route in the crane industry.

[0003] The traditional dual-mass flywheel has an unadjustable stiffness and cannot adapt well to the multi-operating conditions of the crane. In order to better reduce the impact of the crane engine speed fluctuation on the transmission system and meet the multi-operating conditions of the truck crane, a dual-mass flywheel damper with a large working angle and actively adjustable torsional stiffness is urgently needed. Summary of the invention

[0004] In response to the above-mentioned problems existing in the prior art, the present application provides a dual-mass flywheel and a vehicle, which can adapt to more working conditions by dynamically adjusting the torsional stiffness and realize active control of the torsional vibration characteristics of the vehicle transmission system.

[0005] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0006] In the first aspect, the present application provides a dual-mass flywheel, including a starting gear, a primary flywheel, a secondary flywheel and an electromagnetic spring, the starting gear is connected to the primary flywheel, the active end of the electromagnetic spring is connected to the primary flywheel through a side plate, the output end of the electromagnetic spring is connected to the secondary flywheel through a driven plate, the side plate is slidingly connected to the driven plate, an electromagnet is arranged on the side plate, a permanent magnet is arranged on the driven plate, and the electrodes of the electromagnet and the permanent magnet face each other.

[0007] Optionally, a slider is provided on the side plate, a slide groove is provided on the driven plate, and the slider is clamped in the slide groove and is slidably connected with the slide groove.

[0008] Optionally, it also includes a circumferential spring, wherein the primary flywheel is provided with an arc groove, the circumferential spring is clamped in the arc groove, both ends of the circumferential spring are connected to the walls of the arc groove, the secondary flywheel is provided with an end block, the end block is clamped with the circumferential spring, and the circumferential spring is arranged on the outer peripheral side of the electromagnetic spring.

[0009] Optionally, a force transmission plate is provided on the secondary flywheel, the driven plate is connected to the force transmission plate, two end blocks are provided on the force transmission plate, the circumferential spring includes a left half arc and a right half arc, and a connecting plate corresponding to the end block is provided on the side wall of the arc groove, both ends of the left half arc and the right half arc are respectively connected to the two connecting plates, and the end block is clamped between the left half arc and the right half arc.

[0010] Optionally, a protrusion block for limiting the sliding block is provided on the driven plate.

[0011] Optionally, the two end blocks on the force transmission plate are arranged at both ends of the diameter.

[0012] Optionally, four electromagnetic springs are provided, and the four electromagnetic springs are evenly arranged at intervals of 90° along the primary flywheel.

[0013] Optionally, the limit angular displacement of the electromagnetic spring is smaller than the limit compression angle of the circumferential spring.

[0014] In a second aspect, the present application also provides a vehicle comprising the above-mentioned dual mass flywheel.

[0015] Compared with the prior art, this application has at least the following beneficial effects:

[0016] The present application sets an electromagnetic spring between the primary gear and the secondary gear, and can actively adjust the torsional stiffness of the flywheel by adjusting the current intensity of the electromagnetic spring to meet the complex working conditions of the vehicle; the present application combines the circumferential spring with the electromagnetic spring, and makes the limit angular displacement of the electromagnetic spring greater than the limit compression angle of the circumferential spring, thereby ensuring a large relative rotation angle and suppressing the influence of centrifugal force on the circumferential spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a dual-mass flywheel according to an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram for illustrating the structure of the force transmission plate in the embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the structure of the electromagnetic spring in the embodiment of the present application;

[0021] Figure 4This is a schematic diagram for illustrating the positional relationship between the electromagnetic spring and the circumferential spring in the embodiment of the present application;

[0022] Description of reference numerals:

[0023] 1. Starting gear; 2. Primary flywheel; 21. Connecting plate; 3. Secondary flywheel; 4. Electromagnetic spring; 41. Side plate; 411. Sliding block; 42. Follower plate; 421. Sliding groove; 422. Protruding block; 5. Circumferential spring; 51. Left half arc; 52. Right half arc; 6. Force transfer plate; 61. End block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use.

[0025] Example 1

[0026] like Figure 1-Figure 3 As shown, a dual-mass flywheel includes a starting gear 1, a primary flywheel 2, a secondary flywheel 3 and an electromagnetic spring 4. The starting gear 1 is connected to the primary flywheel 2. The active end of the electromagnetic spring 4 is connected to the primary flywheel 2 through a side plate 41. The output end of the electromagnetic spring 4 is connected to the secondary flywheel 3 through a driven plate 42. The side plate 41 is slidingly connected to the driven plate 42. An electromagnet is arranged on the side plate 41, and a permanent magnet is arranged on the driven plate 42. The electrodes of the electromagnet and the permanent magnet face each other.

[0027] The output end of the engine is connected to the starting gear 1, which is driven by the output end of the engine to rotate, driving the primary flywheel 2 to rotate, and the primary flywheel 2 will drive the side plate 41 of the electromagnetic spring 4 to rotate, causing the side plate 41 to slide along the driven plate 42, and the electromagnet and the permanent magnet move towards each other. The electromagnetic repulsion drives the driven plate 42 of the electromagnetic spring 4 to move, thereby driving the secondary flywheel 3 to move. The present application can actively adjust the torsional stiffness of the flywheel by adjusting the current intensity of the electromagnetic spring 4 to meet the requirements of complex vehicle working conditions.

[0028] Example 2

[0029] like Figure 1-Figure 4As shown, the difference between this embodiment and embodiment 1 is that: it also includes a circumferential spring 5, an arc groove is provided on the primary flywheel 2, the circumferential spring 5 is clamped in the arc groove, both ends of the circumferential spring 5 are connected to the wall of the arc groove, and an end block 61 is provided on the secondary flywheel 3, the end block 61 is clamped with the circumferential spring 5, and the circumferential spring 5 is arranged on the outer peripheral side of the electromagnetic spring 4. When the output end of the engine drives the primary flywheel 2 to rotate, one end of the circumferential spring 5 is compressed, and the circumferential spring 5 drives the secondary flywheel 3 to rotate through the end block 61.

[0030] To ensure that the electromagnetic spring 4 is not stretched to the limit position of the rigid connection, the limit compression angle of the circumferential spring 5 is smaller than the limit angular displacement of the electromagnetic spring 4 .

[0031] In this embodiment, a force transmission plate 6 is fixedly connected to the secondary flywheel 3, and the driven plate 42 is connected to the force transmission plate 6. Two end blocks 61 are arranged on the force transmission plate 6. The circumferential spring 5 includes a left semi-arc 51 and a right semi-arc 52. The left semi-arc 51 and the right semi-arc 52 are arranged on the left and right sides of the arc groove, respectively. A connecting plate 21 corresponding to the end block 61 is arranged on the side wall of the arc groove. The two ends of the left semi-arc 51 are respectively connected to the two connecting plates 21, and the two ends of the right semi-arc 52 are also respectively connected to the two connecting plates 21. The end block 61 is clamped between the left semi-arc 51 and the right semi-arc 52. In order to ensure the stability of the flywheel transmission, the two end blocks 61 on the force transmission plate 6 are arranged at both ends of the diameter.

[0032] The side plate 41 is provided with a slider 411, and the driven plate 42 is provided with a slide groove 421. The slider 411 is engaged in the slide groove 421 and is slidably connected with the slide groove 421, so that when the primary gear drives the slider 411 to move, the slider 411 slides up and down along the slide groove 421. In order to limit the up and down sliding range of the slider 411, a protrusion 422 is provided on the driven plate 42.

[0033] In order to ensure the stability of the flywheel transmission, the electromagnetic springs 4 are symmetrically arranged. In this embodiment, four electromagnetic springs 4 are arranged evenly along the primary flywheel 2 at intervals of 90°.

[0034] Implementation principle: the output end of the engine is connected to the starting gear 1, which is driven to rotate by the output end of the engine, driving the primary flywheel 2 to rotate. The primary flywheel 2 compresses the circumferential spring 5 through the two connecting plates 21, and then drives the force transmission plate 6 and the secondary flywheel 3 to move through the compression end block 61; at the same time, the primary flywheel 2 drives the side plate 41 of the electromagnetic spring 4 to rotate, causing the side plate 41 to slide along the driven plate 42, and the electromagnet and the permanent magnet move toward each other. The electromagnetic repulsion force drives the driven plate 42 of the electromagnetic spring 4 to move, thereby driving the secondary flywheel 3 to move.

[0035] A vehicle comprises the dual-mass flywheel described above.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0037] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A dual mass flywheel, characterized in that: It includes a starting gear, a primary flywheel, a secondary flywheel and an electromagnetic spring. The starting gear is connected to the primary flywheel. The active end of the electromagnetic spring is connected to the primary flywheel through a side plate. The output end of the electromagnetic spring is connected to the secondary flywheel through a driven plate. The side plate is slidingly connected to the driven plate. An electromagnet is arranged on the side plate. A permanent magnet is arranged on the driven plate. The electrodes of the electromagnet and the permanent magnet face each other.

2. The dual mass flywheel according to claim 1, characterized in that The side plate is provided with a slider, the driven plate is provided with a slide groove, and the slider is clamped in the slide groove and is slidably connected with the slide groove.

3. The dual mass flywheel according to claim 1, characterized in that It also includes a circumferential spring. The primary flywheel is provided with an arc groove. The circumferential spring is clamped in the arc groove. Both ends of the circumferential spring are connected to the walls of the arc groove. The secondary flywheel is provided with an end block. The end block is clamped with the circumferential spring. The circumferential spring is arranged on the outer peripheral side of the electromagnetic spring.

4. The dual mass flywheel according to claim 3, characterized in that The secondary flywheel is provided with a force transmission plate, the driven plate is connected to the force transmission plate, two end blocks are provided on the force transmission plate, the circumferential spring includes a left half arc and a right half arc, and the side wall of the arc-shaped groove is provided with a connecting plate corresponding to the end block, the two ends of the left half arc and the right half arc are respectively connected to the two connecting plates, and the end block is clamped between the left half arc and the right half arc.

5. The dual mass flywheel according to claim 2, characterized in that The driven plate is provided with a protruding block for limiting the sliding block.

6. The dual mass flywheel according to claim 4, characterized in that The two end blocks on the force transmission plate are arranged at both ends of the diameter.

7. The dual mass flywheel according to claim 1, characterized in that There are four electromagnetic springs, which are evenly arranged at intervals of 90° along the primary flywheel.

8. The dual mass flywheel according to claim 3, characterized in that The limit angular displacement of the electromagnetic spring is greater than the limit compression angle of the circumferential spring.

9. A vehicle, characterized in that: Comprising a dual mass flywheel as claimed in any one of claims 1-8.

Images