Electromagnetic braking device for locking generator shaft

Abstract

The utility model relates to the technical field of power split hybrid transmissions, in particular to an electromagnetic brake device for locking a generator shaft, which comprises a cylindrical brake sleeve seat capable of movably sleeving an input shaft of an engine, and an electromagnetic coil assembly mounting position, a push disc mounting position and a driven disc mounting position are arranged on the surface of the brake sleeve seat. The electromagnetic coil assembly mounting position is sleeved with an electromagnetic coil assembly, the driven disc mounting position is sleeved with a driven disc, and a push disc is movably arranged on the push disc mounting position; a disc spring is arranged on the side, facing the driven disc, of the push disc, and an iron core in the electromagnetic coil assembly can act on the push disc to enable the push disc to move towards the driven disc and be connected with the driven disc in a clamped mode. The outer end face of the driven disc is provided with an output disc capable of being connected with a generator shaft in a sleeved mode. Compared with other types of locking mechanisms, the electromagnetic braking device has the advantages that the change amount of the vehicle is small, the structure is simple and compact, the control logic is simple, and the control effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of power split hybrid gearboxes, and in particular to an electromagnetic braking device for locking a generator shaft. Background Art

[0002] Currently, the main form of power distribution for hybrid power systems is a planetary gearbox, which can achieve continuously variable speed changes.

[0003] In the field of commercial vehicles, diesel engines equipped with power-split hybrid transmissions often work above the external characteristics of the engine, and the generator needs to continuously output torque to maintain the balance of the lever posture and achieve high-speed driving. Under high-speed conditions, the generator needs to continuously output power provided by the battery, and the battery pack's power needs to be charged by the engine under other conditions. At this time, there will be a power cycle, resulting in high engine fuel consumption.

[0004] In order to reduce the generator loss under high-speed conditions, the generator needs to be stopped at high speed. In order to achieve this purpose, the existing locking mechanisms for locking the generator have complex structures, poor control accuracy, and require major modifications to the vehicle.

[0005] Therefore, a new technology is urgently needed to solve this problem. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide an electromagnetic braking device for locking the generator shaft, so as to solve the technical problems that the locking mechanisms used to lock the generator in the prior art have complex structures, poor control accuracy, and require major modifications to the vehicle.

[0007] The above objectives are achieved through the following technical solutions:

[0008] An electromagnetic braking device for locking a generator shaft comprises a cylindrical brake sleeve seat which can be movably sleeved on an engine input shaft, wherein a surface of the brake sleeve seat is provided with an electromagnetic coil assembly mounting position, a push plate mounting position and a driven plate mounting position, wherein the electromagnetic coil assembly mounting position is sleeved with an electromagnetic coil assembly, the driven plate mounting position is sleeved with a driven plate, and the push plate is movably arranged at the push plate mounting position; a disc spring is arranged on the side of the push plate facing the driven plate, an iron core in the electromagnetic coil assembly can act on the push plate to move it toward the driven plate and form a clamping connection with the driven plate; an output plate which can be sleeved on the generator shaft is arranged on the outer end face of the driven plate.

[0009] Furthermore, the brake sleeve is T-shaped, including a fixing seat and a sleeve that are connected to each other, and the sleeve is sequentially provided with a mounting position for the electromagnetic coil assembly, a mounting position for the push plate, and a mounting position for the driven plate.

[0010] Furthermore, a first retaining ring groove is provided on the installation position of the electromagnetic coil assembly, and a first retaining ring groove is embedded with a first retaining ring capable of limiting the rear end of the electromagnetic coil assembly, and the front end of the electromagnetic coil assembly is limited by the fixing seat.

[0011] Furthermore, a clamping block and a clamping groove which can be clamped to each other are provided on the outer surfaces of the fixing seat and the electromagnetic coil assembly.

[0012] Furthermore, the inner wall of the push plate is provided with a plurality of sliding keys, and the push plate mounting position is provided with key slots matching the sliding keys.

[0013] Furthermore, a disc spring ring groove capable of clamping the disc spring is provided on one side of the push plate facing the disc spring, and a second retaining ring groove is provided on the push plate mounting position, in which a second retaining ring groove is embedded with a second retaining spring capable of limiting the disc spring.

[0014] Furthermore, a plurality of connecting teeth are arranged at the rear end of the push plate along the end surface direction, and correspondingly, a plurality of connecting tooth grooves are arranged at the front end of the driven plate along the end surface direction.

[0015] Furthermore, a driven disc bearing ring groove is provided on the driven disc installation position, a driven disc bearing is embedded in the driven disc bearing ring groove, and the driven disc is sleeved with an outer ring of the driven disc bearing.

[0016] Furthermore, a third retaining ring groove is provided on the driven disc installation position corresponding to one side of the driven disc bearing ring groove, and a third retaining ring groove is embedded with a third retaining ring capable of limiting the driven disc bearing.

[0017] Furthermore, after the driven disc is connected to the output disc, a driven disc bearing clamping groove capable of clamping the driven disc bearing is formed on the inner wall of the driven disc.

[0018] The utility model provides an electromagnetic brake device for locking the generator shaft, which reduces the generator loss under high-speed conditions by locking the generator, thereby reducing the engine fuel consumption. Compared with other types of locking mechanisms, the electromagnetic brake device has less modification to the vehicle, a simple and compact structure, simple control logic, and good control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the electromagnetic braking device for locking the generator shaft according to the utility model from a first perspective;

[0020] Figure 2 It is a structural schematic diagram of the electromagnetic braking device for locking the generator shaft according to the utility model from a first perspective;

[0021] Figure 3 This is a cross-sectional view of an electromagnetic braking device for locking a generator shaft according to the utility model;

[0022] Figure 4 This is a structural schematic diagram of a brake sleeve in an electromagnetic brake device for locking a generator shaft according to the utility model;

[0023] Figure 5 This is a structural schematic diagram of a push plate in an electromagnetic brake device for locking a generator shaft according to the utility model;

[0024] Figure 6 This is a schematic structural diagram of a driven disc in an electromagnetic brake device for locking a generator shaft according to the utility model;

[0025] Figure 7 This is a schematic diagram of the application of an electromagnetic braking device for locking a generator shaft according to the utility model.

[0026] Graphic marking:

[0027] 1-brake sleeve seat, 101-electromagnetic coil assembly installation position, 102-push plate installation position, 103-driven plate installation position, 104-fixed seat, 105-sleeve seat, 106-block, 107-first circlip ring groove, 108-second circlip ring groove, 109-third circlip ring groove, 110-key groove, 111-disc spring ring groove, 112-driven plate bearing ring groove;

[0028] 2-electromagnetic coil assembly, 201-iron core, 202-card slot;

[0029] 3-driven disc, 301-connecting tooth groove;

[0030] 4-push plate, 401-sliding key, 402-connecting tooth;

[0031] 5- output disk;

[0032] 6-front cover, 601-front cover shaft hole;

[0033] 7-middle partition, 701-middle partition shaft hole;

[0034] 8- disc spring;

[0035] 9- generator shaft;

[0036] 10-Generator bearing;

[0037] 11- Engine input shaft;

[0038] 12- first retaining spring;

[0039] 13- second retaining spring;

[0040] 14- third retaining spring;

[0041] 15-driven plate bearing;

[0042] 16- driven plate bearing clamping groove;

[0043] 17-front cover bolt;

[0044] 18-front cover plate bearing;

[0045] 19-Input shaft oil seal. DETAILED DESCRIPTION

[0046] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] like Figure 1 to Figure 4 As shown, an electromagnetic brake device for locking a generator shaft comprises a cylindrical brake sleeve 1 capable of movably sleeved on an engine input shaft 11, wherein the surface of the brake sleeve 1 is provided with an electromagnetic coil assembly mounting position 101, a push plate mounting position 102 and a driven plate mounting position 103, wherein the electromagnetic coil assembly mounting position 101 is sleeved with an electromagnetic coil assembly 2, the driven plate mounting position 103 is sleeved with a driven plate 3, and a push plate 4 is movably arranged on the push plate mounting position 102;

[0048] A disc spring 8 is provided on the side of the push plate 4 facing the driven plate 3, and the disc spring 8 can apply reverse pressure to the push plate 4 to make it lean towards the electromagnetic coil assembly 2; the iron core 201 in the electromagnetic coil assembly 2 can act on the push plate 4 to make it move toward the driven plate 3 and form a clamping connection with the driven plate 3;

[0049] The outer end surface of the driven disc 3 is provided with an output disc 5 that can be sleeved with the generator shaft 9. The output disc 5 is provided with an internal spline inside, and correspondingly, an external spline is provided on the outer wall of the front end of the generator shaft 9, and the output disc 5 is firmly connected to the generator shaft 9 by connecting the internal spline and the external spline.

[0050] like Figure 7 As shown, in this embodiment, one end of the brake sleeve 1 is connected to the front cover plate 6 with a front cover plate shaft hole 601, the front cover plate shaft hole 601 is connected to the engine input shaft 11 through a front cover plate bearing 18, and an input shaft oil seal 19 is provided at the outer end of the front cover plate shaft hole 601.

[0051] Specifically, the front cover plate bearing 18 is assembled with the front cover plate shaft hole 601 through the interference fit of the outer ring, and the inner ring is in clearance fit with the engine input shaft 11, with one side abutting against the front cover plate bearing surface, and the other side being axially pressed by the front cylindrical surface of the brake sleeve 1, thus playing an axial constraint. The input shaft oil seal 19 is pressed on the front cover plate shaft hole 601 through the interference fit of the outer diameter, and the front cover plate shaft hole 601 is fitted on the engine input shaft 11, thus playing a sealing role and preventing oil leakage.

[0052] In this embodiment, a middle partition plate 7 with a middle partition plate shaft hole 701 is sleeved on the generator shaft 9, and a generator bearing 10 is provided between the middle partition plate shaft hole 701 and the generator shaft 9, thereby realizing the movable connection between the middle partition plate 7 and the generator shaft 9.

[0053] Working principle:

[0054] When the HBU gives a shift command, the electromagnetic coil assembly 2 is first energized, and the electromagnetic coil assembly 2 generates electromagnetic force, which pushes the push plate 4 to move backward through the iron core 201, further compresses the disc spring 8, and continues to move to the rear end until the push plate 4 and the driven plate 3 are completely engaged. At this time, the generator shaft 9 is locked; during the engagement process of the push plate 4 and the driven plate 3, top teeth may occur. At this time, the generator shaft 9 will rotate at a speed of 50, so that the connecting teeth 402 will be staggered, ensuring that the push plate 4 and the driven plate 3 are fully engaged. In this state, the engine input shaft 11 can rotate according to the actual required speed.

[0055] When the HBU issues a shift-off command, the electromagnetic coil assembly 2 is first powered off, and electromagnetic induction is no longer generated, and the iron core 201 retracts; the push plate 4 moves forward under the force of the disc spring 8 until it is close to the electromagnetic coil assembly 2; the push plate 4 is separated from the driven plate 3, disconnected, and the shift is completed. At this time, the generator shaft 9 can output the speed according to the control, and the engine input shaft 11 is not affected.

[0056] like Figure 2 and Figure 4 As shown, the brake sleeve 1 in this embodiment is T-shaped, including a fixing seat 104 and a sleeve 105 connected to each other, the fixing seat 104 is used to be connected to the front cover plate 6 through the front cover plate bolt 17; the electromagnetic coil assembly mounting position 101, the push plate mounting position 102 and the driven plate mounting position 103 are sequentially arranged on the sleeve 105.

[0057] Among them, a first retaining ring groove 107 is provided on the electromagnetic coil assembly installation position 101, and a first retaining ring groove 107 is embedded with a first retaining ring 12 that can limit the rear end of the electromagnetic coil assembly 2, and the front end of the electromagnetic coil assembly 2 is limited by the fixing seat 104.

[0058] like Figure 1 and Figure 4 As shown, a clamping block 106 and a clamping slot 202 that can be engaged with each other are provided on the outer surfaces of the fixing seat 104 and the electromagnetic coil assembly 2. By engaging the clamping block 106 with the clamping slot 202, the electromagnetic coil assembly 2 is constrained in the circumferential direction relative to the electromagnetic coil assembly installation position 101.

[0059] In this embodiment, the electromagnetic coil assembly 2 is limited in the axial direction by the fixing seat 104 and the first retaining spring 12, and the electromagnetic coil assembly 2 is limited in the circumferential direction by the retaining block 106 and the retaining groove 202, so that the electromagnetic coil assembly 2 can be stably installed in the installation position of the electromagnetic coil assembly 2.

[0060] like Figure 4 and Figure 5 As shown, in this embodiment, the inner wall of the push plate 4 is provided with a plurality of sliding keys 401, and the push plate mounting position 102 is provided with a key slot 110 matching the sliding keys 401. By connecting the sliding keys 401 with the key slots 110, the circumferential movement of the push plate 4 relative to the push plate mounting position 102 is constrained, and the axial forward and backward movement of the push plate 4 at the push plate mounting position 102 can be ensured.

[0061] A disc spring ring groove 111 capable of clamping the disc spring 8 is also opened on the side of the push plate 4 facing the disc spring 8, and a second retaining ring groove 108 is opened on the push plate mounting position 102, and a second retaining ring groove 108 is embedded with a second retaining spring 13 capable of limiting the disc spring 8.

[0062] Specifically, under the action of the disc spring ring groove 111 and the second retaining spring 13, the disc spring 8 is limited in this area, so that it can better apply elastic pressure to the push plate 4, thereby ensuring its reset movement when the electromagnetic coil assembly 2 is not working, thereby realizing the separation of the electromagnetic braking device and the generator shaft 9.

[0063] like Figure 5 and Figure 6 As shown, the rear end of the push plate 4 is provided with a plurality of connecting teeth 402 along the end surface direction, and correspondingly, the front end of the driven plate 3 is provided with a plurality of connecting tooth grooves 301 along the end surface direction;

[0064] The push plate 4 is connected to the driven plate 3 by the mutual engagement of the connecting teeth 402 and the connecting tooth grooves 301 , so that the generator shaft 9 is locked, while the rotation of the engine input shaft 11 is not affected.

[0065] like Figure 2 and Figure 3As shown, a driven disc bearing annular groove 112 is provided on the driven disc installation position 103, a driven disc bearing 15 is embedded in the driven disc bearing annular groove 112, and the driven disc 3 is sleeved with the outer ring of the driven disc bearing 15. By providing the driven disc bearing 15, the driven disc 3 can be sleeved relative to the driven disc installation position 103.

[0066] A third circlip groove 109 is provided on the driven disc mounting position 103 corresponding to one side of the driven disc bearing ring groove 112, and a third circlip 14 capable of limiting the driven disc bearing 15 is embedded in the third circlip groove 109. Through this structure, the driven disc bearing 15 is stably fixed to the driven disc mounting position 103.

[0067] In this embodiment, after the driven disc 3 is connected to the output disc 5, a driven disc bearing clamping groove 16 is formed on the inner wall of the driven disc 3 to clamp the driven disc bearing 15. This structure realizes a stable connection between the driven disc 3 and the outer ring of the driven disc bearing 15.

[0068] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic brake device for locking a generator shaft, characterized in that: The invention comprises a cylindrical brake sleeve (1) capable of being movably sleeved on an engine input shaft (11); the surface of the brake sleeve (1) is provided with an electromagnetic coil assembly mounting position (101), a push plate mounting position (102) and a driven plate mounting position (103); the electromagnetic coil assembly (2) is sleeved on the electromagnetic coil assembly mounting position (101); the driven plate (3) is sleeved on the driven plate mounting position (103); and the push plate (4) is movably arranged on the push plate mounting position (102); A disc spring (8) is provided on the side of the push plate (4) facing the driven plate (3), and the iron core (201) in the electromagnetic coil assembly (2) can act on the push plate (4) to move it toward the driven plate (3) and form a snap connection with the driven plate (3); An output disc (5) capable of being sleeved on a generator shaft (9) is provided on the outer end surface of the driven disc (3).

2. The electromagnetic brake device for locking the generator shaft according to claim 1, characterized in that: The brake sleeve (1) is T-shaped and comprises a fixing seat (104) and a sleeve (105) which are connected to each other; the sleeve (105) is sequentially provided with the electromagnetic coil assembly mounting position (101), the push plate mounting position (102) and the driven plate mounting position (103).

3. The electromagnetic brake device for locking the generator shaft according to claim 2, characterized in that: A first retaining ring groove (107) is provided on the electromagnetic coil assembly installation position (101), and a first retaining ring (12) capable of limiting the rear end of the electromagnetic coil assembly (2) is embedded in the first retaining ring groove (107), and the front end of the electromagnetic coil assembly (2) is limited by the fixing seat (104).

4. The electromagnetic brake device for locking the generator shaft according to claim 3, characterized in that: A clamping block (106) and a clamping groove (202) that can be clamped to each other are provided on the outer surfaces of the fixing seat (104) and the electromagnetic coil assembly (2).

5. An electromagnetic braking device for locking a generator shaft according to claim 1 or 2, characterized in that: The inner wall of the push plate (4) is provided with a plurality of sliding keys (401), and the push plate mounting position (102) is provided with a keyway (110) matching the sliding keys (401).

6. The electromagnetic brake device for locking the generator shaft according to claim 5, characterized in that: The push plate (4) is provided with a disc spring ring groove (111) capable of retaining the disc spring (8) on one side thereof facing the disc spring (8), and a second retaining ring groove (108) is provided on the push plate mounting position (102), wherein a second retaining ring groove (108) is embedded with a second retaining spring (13) capable of limiting the disc spring (8).

7. The electromagnetic brake device for locking the generator shaft according to claim 6, characterized in that: A plurality of connecting teeth (402) are arranged at the rear end of the push plate (4) along the end surface direction, and correspondingly, a plurality of connecting tooth grooves (301) are arranged at the front end of the driven plate (3) along the end surface direction.

8. The electromagnetic brake device for locking the generator shaft according to claim 1, characterized in that: A driven disc bearing annular groove (112) is provided on the driven disc mounting position (103), a driven disc bearing (15) is embedded in the driven disc bearing annular groove (112), and the driven disc (3) is sleeved with the outer ring of the driven disc bearing (15).

9. The electromagnetic brake device for locking the generator shaft according to claim 8, characterized in that: A third retaining ring groove (109) is provided on the driven disc mounting position (103) corresponding to one side of the driven disc bearing ring groove (112), and a third retaining ring (14) capable of limiting the position of the driven disc bearing (15) is embedded in the third retaining ring groove (109).

10. The electromagnetic brake device for locking the generator shaft according to claim 8, characterized in that: After the driven disc (3) is connected to the output disc (5), a driven disc bearing clamping groove (16) capable of clamping the driven disc bearing (15) is formed on the inner wall of the driven disc (3).

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