Novel anti-slip automobile differential transmission structure

Abstract

The utility model belongs to the technical field of differential mechanisms, and particularly relates to a novel anti-slip automobile differential mechanism transmission structure which comprises an automobile differential mechanism body composed of a differential mechanism outer shell, an input shaft, a driving bevel gear, an output shaft, a side face bevel gear, a sun bevel gear, a fixing frame and a planet bevel gear and further comprises an anti-slip mechanism. The hydraulic cylinder is fixed to the inner wall of the differential mechanism outer shell. The driving disc is fixed at the end part of a piston rod of the hydraulic cylinder; a driven disc and a friction plate are respectively fixed at two ends of the push rod; a first guide rod; the first telescopic spring is arranged on the first guide rod in a sleeving mode and located between the driving disc and the driven disc; the base friction force is provided through the first telescopic spring, the distance between the driving disc and the driven disc can be adjusted after the hydraulic cylinder is started, the friction force can be adjusted, adjustment can be achieved according to different scenes, the application range is wide, and the anti-skid effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to differential mechanism technical field, concretely relates to a novel anti -skidding automobile differential mechanism transmission structure. BACKGROUND

[0002] The automobile differential mechanism can make left and right (or front and rear) drive wheels rotate at different speeds, mainly composed of left and right half axle gears, two planetary gears and a gear carrier, and its function is to make the left and right wheels roll at different speeds when the automobile turns or drives on uneven road, that is, to ensure that the two sides of the drive wheels make pure rolling motion.

[0003] At present, the traditional differential mechanism will evenly distribute power to the two wheels when the vehicle single wheel slips, resulting in insufficient effective driving force.

[0004] In the prior art, the Chinese utility model patent with the authorization announcement number CN221237133U discloses "a differential mechanism anti -skidding structure", including the shell, the embedded ring right side fixed installation has ring gear, the inner wall of the ring gear is fixedly installed two groups L-shaped rod, the other end of the L-shaped rod is fixedly installed with friction assembly, the inside rotation of the friction assembly is connected with the connecting shaft, the end of the connecting shaft is fixedly installed with planetary bevel gear, two groups The left and right sides of the planetary bevel gear are engaged with the side bevel gear.

[0005] The differential mechanism anti -skidding structure in the prior art including the above, although it has certain anti -skidding effect, but the friction force is not adjustable, so that the anti -skidding effect of the anti -skidding structure is limited, and it is difficult to be applied to different scenes.

[0006] To solve the above problems, the utility model provides a novel anti -skidding automobile differential mechanism transmission structure. UTILITY MODEL CONTENT

[0007] To solve the above problems in the prior art, the utility model provides a novel anti -skidding automobile differential mechanism transmission structure, which has the characteristics of convenient use, good anti -skidding effect and wide application range.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a novel anti -skidding automobile differential mechanism transmission structure, which comprises an automobile differential mechanism main body composed of a differential mechanism shell body, an input shaft, a driving bevel gear, two symmetrically distributed output shafts, a side bevel gear engaged with the driving bevel gear, two symmetrically distributed sun bevel gears, a fixing frame and two symmetrically installed planetary bevel gears on the fixing frame and engaged with the sun bevel gears, and an anti -skidding mechanism acting on the sun bevel gears, wherein the anti -skidding mechanism comprises:

[0009] A hydraulic cylinder is fixed to the inner wall of the differential housing;

[0010] A driving disc is fixed to the end of the piston rod of the hydraulic cylinder;

[0011] A push rod is fixed with a driven disc and a friction plate at both ends respectively, and the friction plate acts on the sun bevel gear and generates sliding friction with the friction plate when the sun bevel gear rotates;

[0012] A first guide rod is fixed to the inner wall of the differential housing and penetrates the driving disc and the driven disc;

[0013] A first telescopic spring is sleeved on the first guide rod and between the driving disc and the driven disc.

[0014] As a preferred technical scheme of the utility model, the first guide rod is equally spaced in the circumferential direction.

[0015] As a preferred technical scheme of the utility model, further comprising:

[0016] A first limiting disc is fixed to the end of the first guide rod away from the differential housing.

[0017] As a preferred technical scheme of the utility model, further comprising:

[0018] A wear-resistant ring is integrally formed on the friction surface of the friction plate.

[0019] As a preferred technical scheme of the utility model, two groups of symmetrical anti-skid mechanisms are arranged on the same sun bevel gear.

[0020] As a preferred technical scheme of the utility model, further comprising:

[0021] An oil storage box is fixed to the inner wall of the differential housing;

[0022] A three-position five-way electromagnetic valve is fixed to the inner wall of the differential housing, and the three-position five-way electromagnetic valve connects the oil storage box and the hydraulic cylinder by a hose, and the electromagnetic coil of the three-position five-way electromagnetic valve is connected with the wheel speed sensor of the automobile by a wire.

[0023] As a preferred technical scheme of the utility model, further comprising a pre-tightening mechanism acting on the driving bevel gear, wherein the pre-tightening mechanism comprises:

[0024] A bearing is fixed with an outer ring to the inner wall of the differential housing;

[0025] A mounting ring is located on one side of the bearing;

[0026] A threaded rod is fixed to the end face of the inner ring of the bearing and penetrates the mounting ring;

[0027] An adjusting nut is mounted on the threaded rod by screwing;

[0028] A pre-tightening ring is located on one side of the mounting ring and abuts against the driving bevel gear;

[0029] A second guide rod is fixed to the outer wall of the pre-tightening ring and penetrates the mounting ring, and a second limiting disc is fixed to the extending end of the second guide rod;

[0030] A second telescopic spring is sleeved on the second guide rod and is located between the mounting ring and the pre-tightening ring.

[0031] As a preferred technical scheme of the utility model, the threaded rod and the second guide rod are both distributed with multiple equal intervals in the circumferential direction.

[0032] Compared with the prior art, the utility model has the beneficial effects that:

[0033] In the utility model, the basic friction force is provided by the first telescopic spring, the distance between the driving disc and the driven disc can be adjusted after the hydraulic cylinder is started, the size of the friction force can be adjusted, the adjustment can be realized according to different scenes, the application range is wide, and the anti-skid effect is good.

[0034] Other additional advantages and beneficial effects of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0036] Figure 1 It is the structural schematic diagram of the utility model;

[0037] Figure 2 It is the isometric structural schematic diagram of the anti-skid mechanism in the utility model;

[0038] Figure 3 It is the isometric structural schematic diagram of the pre-tightening mechanism in the utility model;

[0039] Figure 4 It is the isometric structural schematic diagram of the pre-tightening mechanism in the utility model Figure 1Amplification structure schematic view in A in the figure.

[0040] In the figure: 1, differential housing; 2, input shaft; 3, drive bevel gear; 4, output shaft; 5, side bevel gear; 6, sun bevel gear; 7, fixed frame; 8, planetary bevel gear; 9, anti-skid mechanism; 91, hydraulic cylinder; 92, driving disc; 93, push rod; 94, driven disc; 95, friction plate; 951, wear ring; 96, No. 1 guide rod; 961, No. 1 limit disc; 97, No. 1 telescopic spring; 10, pre-tightening mechanism; 101, bearing; 102, mounting ring; 103, threaded rod; 104, adjusting nut; 105, pre-tightening ring; 106, No. 2 guide rod; 1061, No. 2 limit disc; 107, No. 2 telescopic spring; 11, oil storage box; 12, three-position five-way electromagnetic valve. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] It should be noted that the automobile differential is a very scene transmission component, and its specific composition and working principle are all existing technologies fully disclosed on the market. This paper will not repeat the description of the positional relationship and mounting mode of each component of the automobile differential, such as the differential housing 1, the input shaft 2, the drive bevel gear 3, the output shaft 4, the side bevel gear 5, the sun bevel gear 6, the fixed frame 7 and the planetary bevel gear 8. For details, please refer to the automobile differential in the prior art.

[0043] Please refer to Figures 1-4 The utility model provides the following technical scheme: a novel anti-skid automobile differential transmission structure, which comprises an automobile differential main body composed of a differential housing 1, an input shaft 2, a drive bevel gear 3, two symmetrically distributed output shafts 4, a side bevel gear 5 meshing with the drive bevel gear 3, two symmetrically distributed sun bevel gears 6, a fixed frame 7 and two symmetrically mounted planetary bevel gears 8 on the fixed frame 7 and meshing with the sun bevel gears 6, and further comprises an anti-skid mechanism 9 acting on the sun bevel gears 6, wherein the anti-skid mechanism 9 comprises a hydraulic cylinder 91, a driving disc 92, a push rod 93, a No. 1 guide rod 96 and a No. 1 telescopic spring 97.

[0044] Further, the anti-skid mechanism 9 comprises a No. 2 guide rod 106, a No. 2 telescopic spring 107 and a No. 2 limit disc 1061. Figure 1 And Figure 2As shown, in the embodiment, the hydraulic cylinder 91 is fixed to the inner wall of the differential housing 1, the driving disc 92 is fixed to the piston rod end of the hydraulic cylinder 91, the driven disc 94 and the friction plate 95 are respectively fixed to the two ends of the push rod 93, the friction plate 95 acts on the sun bevel gear 6, and the sliding friction is generated between the sun bevel gear 6 and the friction plate 95 when the sun bevel gear 6 rotates, the first guide rod 96 is fixed to the inner wall of the differential housing 1 and penetrates the driving disc 92 and the driven disc 94, and the first telescopic spring 97 is sleeved on the first guide rod 96 and is between the driving disc 92 and the driven disc 94. After the above scheme is used, in use, the driven disc 94 is pushed by the first telescopic spring 97, so that the friction plate 95 abuts against the sun bevel gear 6, and the sliding friction is generated between the sun bevel gear 6 and the friction plate 95 when the sun bevel gear 6 rotates. Therefore, when the rotational speed of the single-side wheel abnormally increases (that is, slips), the sliding wheel is limited to idle by the friction force, the torque is guided to the wheel with strong adhesion, and the anti-slip is realized. When necessary, the hydraulic cylinder 91 is started, the piston rod of the hydraulic cylinder 91 drives the driving disc 92 to move, the initial telescopic amount of the first telescopic spring 97 is changed, and the size of the friction force can be adjusted. For example, the driving disc 92 is pushed by the piston rod of the hydraulic cylinder 91 to be close to the driven disc 94, the compression force of the friction plate 95 on the sun bevel gear 6 can be increased, and the friction force can be increased. The utility model provides the basic friction force by the first telescopic spring 97, the distance between the driving disc 92 and the driven disc 94 can be adjusted after the hydraulic cylinder 91 is started, the size of the friction force can be adjusted, the adjustment can be realized according to different scenes, the application range is wide, and the anti-slip effect is good.

[0045] It should be noted that the anti-slip mechanism 9 is arranged on one side of the two sun bevel gears 6, and is respectively used for controlling the output shaft 4 on the two sides. The installation position of the anti-slip mechanism 9 can be different according to different differentials. For example, for the differential shown in the drawings of the utility model, the anti-slip mechanism 9 on one side is fixed to the inner wall of the differential housing 1, and the anti-slip mechanism 9 on the other side is preferably fixed to the side bevel gear 5 or can be fixed to the inner wall of the differential housing 1 by using other supporting accessories.

[0046] Preferably, by Figure 1 and Figure 2 As shown, in the embodiment, a plurality of first guide rods 96 are distributed at equal intervals in the circumferential direction. After the above scheme is used, in use, the plurality of first guide rods 96 are distributed at equal intervals in the circumferential direction, and the stability of the driving disc 92 and the driven disc 94 is further improved.

[0047] Preferably, by Figure 1 and Figure 2As shown, in the embodiment, further comprising: a first limiting disc 961, the first limiting disc 961 is fixed to the end of the first guide rod 96 away from the differential housing 1, after using the above scheme, the first limiting disc 961 is used to limit the moving range of the driven disc 94, so that the driven disc 94 is prevented from being separated from the first guide rod 96.

[0048] Preferably, by Figure 1 And Figure 2 As shown, in the embodiment, further comprising: a wear-resistant ring 951, the wear-resistant ring 951 is integrally formed on the friction surface of the friction plate 95, after using the above scheme, the design of the wear-resistant ring 951 can prolong the service life of the friction plate 95.

[0049] Preferably, by Figure 1 And Figure 2 As shown, in the embodiment, two groups of anti-skid mechanisms 9 are arranged on the same sun bevel gear 6, after using the above scheme, in use, the design can make the stress of the sun bevel gear 6 more uniform, avoid the problem of inclination caused by uneven stress, and can provide sufficient friction force, and the anti-skid effect is good.

[0050] Preferably, by Figure 1 , Figure 2 And Figure 1 As shown, in the embodiment, further comprising: an oil storage box 11 and a three-position five-way electromagnetic valve 12, the oil storage box 11 is fixed to the inner wall of the differential housing 1, the oil storage box 11 is fixed to the inner wall of the differential housing 1, and the three-position five-way electromagnetic valve 12 is connected to the oil storage box 11 and the hydraulic cylinder 91 by a hose, and the electromagnetic coil of the three-position five-way electromagnetic valve 12 is connected to the wheel speed sensor of the automobile by a wire, after using the above scheme, the two hydraulic cylinders 91 are controlled by the three-position five-way electromagnetic valve 12, and the three-position five-way electromagnetic valve 12 is connected to the wheel speed sensor of the automobile and is controlled by the automobile's driving computer, when the single-side wheel speed abnormally rises, the wheel speed sensor transmits an instruction to the driving computer, at this time, the three-position five-way electromagnetic valve 12 works, the hydraulic oil is introduced into the hydraulic cylinder 91, the friction force of the side is increased, the slipping wheel is limited to idle, and the torque is directed to the wheel with strong adhesion; after the vehicle is rescued, the pressure is automatically released, and the differential is restored to normal work.

[0051] It should be noted that the three-position five-way electromagnetic valve 12 is used to control the two hydraulic cylinders 91, differential control is realized, the precision is higher, and the operation is more stable and reliable, if the precision requirement is not high, other schemes can be used in actual use, for example, two-position two-way electromagnetic valves are used, but two need to be set to independently control the corresponding hydraulic cylinders 91.

[0052] In addition, other detailed information of the three-position five-way electromagnetic valve 12 can refer to the three-position five-way electromagnetic valve 12 in the prior art, and will not be described in detail herein.

[0053] Preferably, by Figure 2 and Figure 4 As shown in the figure, the pre-tightening mechanism 10 acts on the driving bevel gear 3, wherein the pre-tightening mechanism 10 comprises a bearing 101, a mounting ring 102, a threaded rod 103, an adjusting nut 104, a pre-tightening ring 105, a second guide rod 106 and a second telescopic spring 107, the outer ring of the bearing 101 is fixed to the inner wall of the differential housing 1, the mounting ring 102 is located on one side of the bearing 101, the threaded rod 103 is fixed to the end face of the inner ring of the bearing 101 and penetrates through the mounting ring 102, the adjusting nut 104 is installed on the threaded rod 103 in a threaded manner, the pre-tightening ring 105 is located on one side of the mounting ring 102 and abuts against the driving bevel gear 3, the second guide rod 106 is fixed to the outer wall of the pre-tightening ring 105 and penetrates through the mounting ring 102, and a second limiting disc 1061 is fixed to the extending end of the second guide rod 106, and the second telescopic spring 107 is sleeved on the second guide rod 106 and is located between the mounting ring 102 and the pre-tightening ring 105, after the above scheme is used, in use, the pre-tightening ring 105 is pushed against the driving bevel gear 3 by the elastic force of the second telescopic spring 107, so that the driving bevel gear 3 and the side bevel gear 5 are reliably engaged, and the stability of the engagement is improved; the initial position of the mounting ring 102 can be adjusted by rotating the adjusting nut 104, so that the tightening degree of the pre-tightening ring 105 on the driving bevel gear 3 is adjusted.

[0054] Preferably, by Figure 1 and Figure 3 Figure 1 Figure 3 As shown in the figure, in the embodiment, the threaded rod 103 and the second guide rod 106 are both distributed with a plurality of equal intervals in the circumferential direction, after the above scheme is used, in use, the plurality of threaded rods 103 and the second guide rods 106 are both distributed with a plurality of equal intervals in the circumferential direction, so that the stability of the mounting ring 102 and the pre-tightening ring 105 is ensured.

[0055] It should be noted that the hydraulic cylinder 91 and the three-position five-way electromagnetic valve 12 are both conventional equipment purchased in the market, and the built-in power switch can be selected by a person skilled in the art according to the use requirement, the working principle thereof is a common sense known by a person skilled in the art and has been fully disclosed by the prior art, and therefore will not be described in detail herein.

[0056] The circuit connection of the utility model relates to the common means adopted by the person skilled in the art, and the technical inspiration can be obtained through a limited number of tests, and belongs to the prior art widely used.

[0057] The components not described in detail herein are the prior art.

[0058] The working principle and use process of the utility model: the automobile differential transmission structure of the utility model, when using, through the one telescopic spring 97 promotes the driven disc 94, so that the friction plate 95 is close to the sun bevel gear 6, makes the sun bevel gear 6 rotate and the friction plate 95 produce sliding friction, therefore, when the unilateral wheel speed is abnormally high (i.e. skidding), through the friction force limit skid wheel idling, the torque is guided to the wheel with strong adhesion, realizes antiskid;

[0059] When necessary, through the starting hydraulic cylinder 91, the piston rod of hydraulic cylinder 91 drives driving disc 92 to move, changes the initial telescopic amount of one telescopic spring 97, can adjust the size of friction, for example, the piston rod of hydraulic cylinder 91 promotes driving disc 92 to be close to driven disc 94, can improve the compression force of friction plate 95 compressing sun bevel gear 6, increases the friction force;

[0060] In another aspect of the utility model, through three five-way electromagnetic valve 12 controls two hydraulic cylinders 91, and three five-way electromagnetic valve 12 is connected to the wheel speed sensor of automobile, is controlled to the car computer, when unilateral wheel speed is abnormally high, the wheel speed sensor transmits instruction to the car computer, at this time, three five-way electromagnetic valve 12 works, and hydraulic oil is guided into hydraulic cylinder 91, improves the friction force of this side, limits skid wheel idling, and the torque is guided to the wheel with strong adhesion;

[0061] After the vehicle is released from the trouble, the pressure is automatically released, the differential is restored to normal operation, and the degree of intelligence is high, so that the hydraulic cylinder 91 does not need to be manually started;

[0062] In addition, the utility model discloses that the elastic force of the second telescopic spring 107 promotes the pre-tightening ring 105 to be close to the driving bevel gear 3, guarantees that the driving bevel gear 3 and the side bevel gear 5 are reliably engaged, and the stability of engagement is improved.

[0063] The utility model provides basic friction force through one telescopic spring 97, can adjust the distance between driving disc 92 and driven disc 94 after the starting of hydraulic cylinder 91, adjusts the size of friction, can realize adjustment according to different scenes, and the scope of application is extensive, and the antiskid effect is good.

[0064] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A new anti-slip automobile differential transmission structure, comprising an automobile differential main body composed of a differential housing (1), an input shaft (2), a driving bevel gear (3), two symmetrically distributed output shafts (4), a side bevel gear (5) engaged with the driving bevel gear (3), two symmetrically distributed sun bevel gears (6), a fixed frame (7), and two symmetrically mounted planetary bevel gears (8) on the fixed frame (7) and engaged with the sun bevel gears (6), characterized in that, Further comprising an anti-skid mechanism (9) acting on the sun bevel gear (6), wherein the anti-skid mechanism (9) comprises: a hydraulic cylinder (91) fixed to the inner wall of the differential housing (1); a drive disc (92) fixed to the piston rod end of the hydraulic cylinder (91); a push rod (93) having a driven disc (94) and a friction plate (95) fixed at both ends thereof, the friction plate (95) acting on the sun bevel gear (6) and generating sliding friction with the friction plate (95) when the sun bevel gear (6) rotates; a first guide rod (96) fixed to the inner wall of the differential housing (1) and penetrating the drive disc (92) and the driven disc (94); a first telescopic spring (97) sleeved on the first guide rod (96) and located between the drive disc (92) and the driven disc (94).

2. The new anti-slip automobile differential transmission structure according to claim 1, characterized in that: The first guide rod (96) is equally spaced in the circumferential direction.

3. The new anti-slip automobile differential transmission structure according to claim 1, characterized in that: Further comprising: a first limiting disc (961) fixed to the end of the first guide rod (96) away from the differential housing (1).

4. The new anti-slip automobile differential transmission structure according to claim 1, characterized in that: Further comprising: a wear-resistant ring (951) integrally formed on the friction surface of the friction plate (95).

5. The new anti-slip automobile differential transmission structure according to claim 1, characterized in that: The same sun bevel gear (6) is provided with two groups of symmetrically distributed anti-skid mechanisms (9).

6. The new anti-slip automobile differential transmission structure according to claim 5, characterized in that: Further comprising: an oil storage box (11) fixed to the inner wall of the differential housing (1); a three-position five-way electromagnetic valve (12) fixed to the inner wall of the differential housing (1), and the three-position five-way electromagnetic valve (12) is connected to the oil storage box (11) and the hydraulic cylinder (91) by a hose, and the electromagnetic coil of the three-position five-way electromagnetic valve (12) is connected to the wheel speed sensor of the automobile by a wire.

7. The new anti-slip automobile differential transmission structure according to claim 1, characterized in that: Further comprising a pre-tightening mechanism (10) acting on the drive bevel gear (3), wherein the pre-tightening mechanism (10) comprises: a bearing (101) with its outer ring fixed to the inner wall of the differential housing (1); a mounting ring (102) located on one side of the bearing (101); a threaded rod (103) fixed to the inner ring end face of the bearing (101) and penetrating the mounting ring (102); an adjusting nut (104) mounted on the threaded rod (103) by screwing; a pre-tightening ring (105) located on one side of the mounting ring (102) and abutting against the drive bevel gear (3); a second guide rod (106) fixed to the outer wall of the pre-tightening ring (105) and penetrating the mounting ring (102), and a second limiting disc (1061) is fixed to the extending end of the second guide rod (106). A second telescopic spring (107) is sleeved on the second guide rod (106) and is between the mounting ring (102) and the pre-tightening ring (105).

8. The new anti-slip automobile differential transmission structure according to claim 7, characterized in that: The threaded rod (103) and the second guide rod (106) are both circumferentially and equally spaced.

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