Integral type double-airbag electric drive trailer axle

Abstract

The utility model provides an integral double-airbag electric drive trailer axle, which relates to the technical field of trailer chassis and comprises a first trailer axle assembly, a second trailer axle assembly and a third trailer axle assembly. The first trailer axle assembly comprises a first trailer axle body; the first trailer axle body comprises a first body middle section, a front guide arm, a front support boss, a rear guide arm, an air bag installation boss, a disc brake flange, a half shaft sleeve, a damping rod boss, an axle package and an oil drainage hole boss. Compared with an existing electrically-driven trailer axle housing, the integral type double-airbag electrically-driven trailer axle has the advantages that high integration of the trailer axle body is achieved, use of connecting pieces is reduced, the problem that the shape and the space of the corbel are seriously limited is solved, the structure of the corbel is simplified, the quality cost of the axle housing unit is reduced, the assembly process is simplified, and the production efficiency is improved. Failure risk points of current traditional axle housing bolt connection are eliminated, and the overall stability of the electrically-driven trailer axle housing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer chassis, in particular to an integral double-airbag electrically driven trailer axle. Background Art

[0002] Traditional semi-trailers are towed by tractors and have no power devices. In recent years, with the continuous development of vehicle technology and the advancement of new energy, electric trailers with driving capabilities have begun to emerge, which can not only assist tractors, but also achieve energy recovery. This reduces emissions and pollution during logistics transportation, further improves transportation efficiency, and reduces fuel consumption.

[0003] The drive axle in the existing electric trailer is realized by adding a motor, battery, shock absorber, airbag, leaf spring or bracket to the unpowered axle housing. The elastic connection between the axle housing and the bracket is often achieved by respectively assembling the bracket at fixed positions on both sides of the axle, and elastically connecting the bracket with bolts and nuts, thereby realizing the assembly of the bracket and the electric drive trailer axle.

[0004] However, this method of connection through bolts makes the assembly process between the support arm and the electric drive trailer axle complicated, the connecting parts will become loose during the driving of the vehicle, and the shape and space of the support arm are severely restricted, the appearance structure is complex, and the weight of the whole vehicle is greatly increased. Utility Model Content

[0005] The purpose of the utility model is to provide an integral double-airbag electric-driven trailer axle, which solves the problems of complicated assembly process between the support arm and the electric-driven trailer axle caused by connection by bolts, loosening of the connecting parts during the driving of the vehicle, severe restrictions on the shape and space of the support arm, complex external structure, and greatly increased weight of the entire vehicle.

[0006] The utility model provides an integrated double-airbag electric drive trailer axle, comprising:

[0007] a first trailer axle assembly, a second trailer axle assembly and a third trailer axle assembly;

[0008] The first trailer axle assembly includes a first trailer axle body and a disc brake assembly;

[0009] The first trailer axle body comprises:

[0010] A first body middle section, with both ends extending to both sides;

[0011] Front guide arms are vertically integrally formed on both left and right sides of the front wall of the middle section of the first body, and a front bracket boss is integrally formed at the front end of the front guide arm;

[0012] Rear guide arms are vertically integrally formed on both left and right sides of the rear wall of the middle section of the first body, and an airbag mounting boss is integrally formed at the rear end of the rear guide arm;

[0013] Disc brake flanges are integrally formed on both left and right sides of the outer wall of the middle section of the first body;

[0014] A half-axle sleeve is integrally formed at both left and right ends of the middle section of the first body;

[0015] The upper end of the rear guide arm is integrally formed with a shock-absorbing rod boss;

[0016] A bridge bag is integrally formed on the rear wall of the middle section of the first body, and an oil drain hole boss is provided in the middle of the bridge bag.

[0017] As a further optimization solution, for the electric auxiliary driving and braking of the electric trailer, the disc brake assembly includes:

[0018] There are two first airbags, and the two first airbags are fixedly connected to the two airbag mounting bosses correspondingly;

[0019] A first front bracket is fixedly connected to the front bracket boss;

[0020] A first shock absorber is fixedly connected to the shock absorber rod boss;

[0021] A first motor reducer assembly, which is fixedly connected to the front end of the middle section of the first body;

[0022] The disc brake flange is fixedly connected with a first wheel end, and the first wheel end is sleeved on the half-axle sleeve on the same side;

[0023] A first brake air chamber is fixedly connected to the first wheel end;

[0024] The output end of the first motor reducer assembly is fixedly connected to the input end of the first wheel end.

[0025] As a further optimization solution, in order to provide a new embodiment, the first trailer axle assembly includes a second trailer axle body and a drum brake assembly;

[0026] The second trailer axle body is different from the first trailer axle body in that the disc brake flange is replaced by a drum brake flange, and the first body middle section is replaced by the second body middle section;

[0027] The drum brake assembly comprises:

[0028] a second air bag, a second front bracket, a second shock absorber, a second motor reducer assembly, a second brake air chamber, and a second wheel end;

[0029] The assembly method of the second trailer axle body and the drum brake assembly is the same as that of the first trailer axle body and the disc brake assembly.

[0030] As a further optimization, to clarify the difference between the middle section of the first body and the middle section of the second body, the cross-section of the middle section of the first body is square;

[0031] The cross-section of the middle section of the second body is circular.

[0032] As a further optimization, to provide a new embodiment, the half shaft sleeve is of a split design, and after being positioned with the corresponding first trailer axle body and second trailer axle body, it is welded into a whole.

[0033] As a further optimization, to provide an embodiment, the cross-sections of the front guide arms and rear guide arms of the first trailer axle body and the second trailer axle body are in the shape of a "door".

[0034] As a further optimization, to provide a new embodiment, the cross-sections of the front guide arms and rear guide arms of the first trailer axle body and the second trailer axle body are in the shape of a "mouth".

[0035] As a further optimization, to provide a new embodiment, the cross-sections of the front guide arms and rear guide arms of the first trailer axle body and the second trailer axle body are in the shape of a "worker".

[0036] As a further optimization, to provide a new embodiment, the cross-sections of the front guide arms and rear guide arms of the first trailer axle body and the second trailer axle body are in the shape of a "T".

[0037] As a further optimization, to provide a new embodiment, the cross-sections of the front guide arms and rear guide arms of the first trailer axle body and the second trailer axle body are in the shape of a "mountain".

[0038] The present utility model provides an integral double-airbag electric drive trailer axle through improvement. Compared with the prior art, it has the following improvements and advantages:

[0039] Compared with the current electric drive trailer axle housing, the integral double-airbag electric drive trailer axle realizes the high integration of the trailer axle body, reduces the use of connecting parts, solves the problem that the shape and space of the support arm are severely restricted, simplifies the support arm structure, realizes the reduction of the quality cost of the axle housing unit, simplifies the assembly process, eliminates the failure risk points of the current traditional axle housing bolt connection, and improves the overall stability of the electric drive trailer axle housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a schematic diagram of the structure of the utility model;

[0042] Figure 2 It is a structural schematic diagram of the suspension of the electric drive trailer of the utility model;

[0043] Figure 3 This is a schematic diagram of the structure of the first trailer axle body matched with a disc brake assembly of the utility model;

[0044] Figure 4 This is a schematic diagram of the structure of the second trailer axle body matched with a disc brake flange of the utility model;

[0045] Figure 5 This is a schematic diagram of the assembly structure of the oil drain hole boss in the utility model;

[0046] Figure 6 This is a schematic diagram of the structure of the second trailer axle body matched with a drum brake assembly of the utility model;

[0047] Figure 7 It is a schematic diagram of the structure of the drum brake flange on the second trailer axle body of the utility model;

[0048] Figure 8 This is a schematic diagram of the circular cross-section structure of the middle section of the second body of the utility model;

[0049] Fig. 9 It is a schematic diagram of the integrated structure of the half-axle sleeve and the first trailer axle body or the second trailer axle body of the utility model;

[0050] Fig.10 It is a schematic diagram of the split structure of the half-axle sleeve and the first trailer axle body or the second trailer axle body of the utility model;

[0051] Fig.11 It is a schematic diagram of a "door" shaped cross section of the front guide arm and the rear guide arm of the utility model;

[0052] Fig.12 It is a schematic diagram of a "mouth" shaped cross section of the front guide arm and the rear guide arm of the utility model;

[0053] Fig.13 It is a schematic diagram of a "mountain" shaped cross section of the front guide arm and the rear guide arm of the utility model;

[0054] Fig.14 It is a schematic diagram of a "T"-shaped cross section of the front guide arm and the rear guide arm of the utility model;

[0055] Fig.15 It is a schematic diagram of an “I” shaped cross section of the front guide arm and the rear guide arm of the utility model.

[0056] Description of reference numerals:

[0057] 1-first trailer axle assembly, 11a-first trailer axle body, 11b-second trailer axle body, 111a-first body middle section, 111b-second body middle section, 112-front guide arm, 113-front bracket boss, 114-rear guide arm, 115-airbag mounting boss, 116a-disc brake flange, 116b-drum brake flange, 117-semi-axle sleeve, 118-shock absorber rod boss, 119-bridge package, 1191- Oil drain hole boss, 12a-first air bag, 13a-first front bracket, 14a-first shock absorber, 15a-first motor reducer assembly, 16a-first brake air chamber, 17a-first wheel end, 12b-second air bag, 13b-second front bracket, 14b-second shock absorber, 15b-second motor reducer assembly, 16b-second brake air chamber, 17b-second wheel end, 2-second trailer axle assembly, 3-third trailer axle assembly. DETAILED DESCRIPTION

[0058] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are 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.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0060] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0061] See also Figure 1-15 The utility model provides a technical solution: an integrated double-airbag electric drive trailer axle,

[0062] The first trailer axle assembly 1, the second trailer axle assembly 2 and the third trailer axle assembly 3 are fixed on the frame of the trailer, and the trailer is towed by a tractor;

[0063] The first trailer axle assembly 1, the second trailer axle assembly 2 and the third trailer axle assembly 3 on the trailer can be designed and matched according to different working conditions and actual use requirements.

[0064] One embodiment is: the first trailer axle assembly 1 is an electrically driven trailer axle assembly, and the second trailer axle assembly 2 and the third trailer axle assembly 3 are conventional trailer axle assemblies without power assistance;

[0065] Another embodiment is: the first trailer axle assembly 1 and the second trailer axle assembly 2 are electrically driven trailer axle assemblies with the same structure, and the third trailer axle assembly 3 is a conventional trailer axle assembly without power assistance;

[0066] In another embodiment, the first trailer axle assembly 1, the second trailer axle assembly 2 and the third trailer axle assembly 3 are all electrically driven trailer axle assemblies with the same structure.

[0067] like Figure 3-5 As shown, the electric drive trailer axle assembly has two embodiments: a first trailer axle body 11a is used with a disc brake assembly and a second trailer axle body 11b is used with a drum brake assembly;

[0068] In the embodiment where the first trailer axle body 11a is used in conjunction with a disc brake assembly:

[0069] The first trailer axle body 11a includes:

[0070] The outer contour of the middle portion of the first body middle section 111a is circular, gradually transitioning to a square cross section and extending outward;

[0071] Front guide arms 112 are vertically formed on both sides of the front wall of the first body middle section 111a, and a front bracket boss 113 is formed on the front end of the front guide arm 112. The front guide arm 112 is in an arc shape.

[0072] The left and right sides of the rear wall of the first body middle section 111a are vertically integrally formed with rear guide arms 114, and the rear end of the rear guide arms 114 is integrally formed with an airbag mounting boss 115, and the rear guide arms 114 are arc-shaped; the airbag mounting boss 115 is a semicircular structure, and can also be replaced with other shapes, such as square and oval;

[0073] The left and right sides of the outer wall of the first body middle section 111a are connected with disc brake flanges 116a by using rounded corners for transition;

[0074] The left and right ends of the first body middle section 111a are transitionally connected with half-axle sleeves 117 by using rounded corners;

[0075] A shock-absorbing rod boss 118 is integrally formed at the upper end of the rear guide arm 114;

[0076] A bridge package 119 is integrally formed on the rear wall of the first body middle section 111 a , and an oil drain hole boss 1191 is provided in the middle of the bridge package 119 .

[0077] The disc brake assembly includes:

[0078] There are two first airbags 12a, and the two first airbags 12a are fixedly connected to the two airbag mounting bosses 115 accordingly;

[0079] The front bracket boss 113 is fixedly connected with a first front bracket 13a;

[0080] The first shock absorber 14a is fixedly connected to the shock absorber rod boss 118;

[0081] A first motor reducer assembly 15a, which is fixedly connected to the front end of the first body middle section 111a;

[0082] The disc brake flange 116a is fixedly connected with the first wheel end 17a, and the first wheel end 17a is sleeved on the half-axle sleeve 117 on the same side;

[0083] A first brake air chamber 16a is fixedly connected to the first wheel end 17a, and the first brake air chamber 16a is used to act on the corresponding first wheel end 17a for braking;

[0084] The output end of the first motor reducer assembly 15a is fixedly connected to the input end of the first wheel end 17a, and the first motor reducer assembly 15a drives the first wheel end 17a to drive the wheel to rotate.

[0085] like Figure 6-7 As shown, in the embodiment in which the second trailer axle body 11b is used in conjunction with a drum brake assembly:

[0086] The difference between the second trailer axle body 11b and the first trailer axle body 11a is that the disc brake flange 116a is replaced by a drum brake flange 116b, and the first body middle section 111a is replaced by the second body middle section 111b, and the rest of the structures are the same;

[0087] The outer contour of the middle portion of the second body middle section 111b is circular, and the two sides gradually become smaller and gradually transition to a circular cross section extending to both sides;

[0088] The drum brake assembly includes:

[0089] A second air bag 12b, a second front bracket 13b, a second shock absorber 14b, a second motor reducer assembly 15b, a second brake air chamber 16b and a second wheel end 17b;

[0090] The assembly method of the second trailer axle body 11b and the drum brake assembly is the same as the assembly method of the first trailer axle body 11a and the disc brake assembly, where the assembly method refers to the connection relationship between components.

[0091] The trailer axle assembly without power assistance only has the first trailer axle body 11 a or the second trailer axle body 11 b .

[0092] like Fig.10 As shown, in some embodiments, the half-axle sleeve 117 is a split design, and the half-axle sleeve 117 is positioned and welded to the corresponding first trailer axle body 11a and second trailer axle body 11b as a whole. The advantage of this design is that different half-axle sleeves 117 can be matched according to different working conditions of the vehicle, and can adapt to vehicles used in various complex working conditions.

[0093] like Fig.11 As shown, a first embodiment of the front guide arm 112 and the rear guide arm 114 is:

[0094] The cross-sections of the front guide arms 112 and the rear guide arms 114 of the first trailer axle body 11a and the second trailer axle body 11b are in the shape of a “door”.

[0095] like Fig.12 As shown, the second embodiment of the front guide arm 112 and the rear guide arm 114 is:

[0096] The cross-sections of the front guiding arms 112 and the rear guiding arms 114 of the first trailer axle body 11a and the second trailer axle body 11b are in the shape of a "mouth", which is formed by adding a plane to the lower side in the first embodiment.

[0097] As Fig.13 shown, the third embodiment of the front guiding arm 112 and the rear guiding arm 114 is:

[0098] The cross-sections of the front guiding arms 112 and the rear guiding arms 114 of the first trailer axle body 11a and the second trailer axle body 11b are in the shape of a "mountain", which is formed by adding another vertical surface in the middle of the two vertical surfaces in the first embodiment.

[0099] As Fig.14 shown, the fourth embodiment of the front guiding arm 112 and the rear guiding arm 114 is:

[0100] The cross-sections of the front guiding arms 112 and the rear guiding arms 114 of the first trailer axle body 11a and the second trailer axle body 11b are in the shape of a "T", which is formed by removing the vertical surfaces on both sides based on the third embodiment.

[0101] As Fig.15 shown, the fifth embodiment of the front guiding arm 112 and the rear guiding arm 114 is:

[0102] The cross-sections of the front guiding arms 112 and the rear guiding arms 114 of the first trailer axle body 11a and the second trailer axle body 11b are in the shape of an "I", which is formed by adding a horizontal surface at the lower end based on the fourth embodiment.

[0103] Working principle:

[0104] Both the first trailer axle body 11a and the second trailer axle body 11b adopt an integrally formed design for high-level integration;

[0105] The first trailer axle body 11a is used in combination with a disc brake assembly, and the two are integrated together to reduce space occupation; the second trailer axle body 11b is used in combination with a drum brake assembly, and the two are integrated together to reduce space occupation;

[0106] In the solution, the first trailer axle assembly 1, the second trailer axle assembly 2 and the third trailer axle assembly 3 can be designed and combined according to different working conditions and actual usage requirements to form three embodiments;

[0107] The electric drive trailer axle has two embodiments;

[0108] The shape of the airbag mounting boss 115 has three embodiments:

[0109] The assembly method of the half shaft sleeve 117 has two embodiments;

[0110] The cross-sectional shapes of the front guide arm 112 and the rear guide arm 114 have five embodiments;

[0111] The above-mentioned various embodiments are matched and combined with each other to form various different embodiments, which can be selected according to different working conditions and actual use requirements.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An integrated dual-airbag electric drive trailer axle, characterized in that: include: A first trailer axle assembly (1), a second trailer axle assembly (2) and a third trailer axle assembly (3); The first trailer axle assembly (1) comprises a first trailer axle body (11a) and a disc brake assembly; The first trailer axle body (11a) comprises: A first body middle section (111a), with two ends extending toward both sides; Front guide arms (112) are vertically integrally formed on both left and right sides of the front wall of the first body middle section (111a), and a front bracket boss (113) is integrally formed at the front end of the front guide arm (112); Rear guide arms (114) are vertically integrally formed on both left and right sides of the rear wall of the middle section (111a) of the first body, and an airbag mounting boss (115) is integrally formed at the rear end of the rear guide arm (114); Disc brake flanges (116a) are integrally formed on both left and right sides of the outer wall of the first body middle section (111a); A half-axle sleeve (117) is integrally formed at both left and right ends of the first body middle section (111a); A shock-absorbing rod boss (118) is integrally formed at the upper end of the rear guide arm (114); A bridge bag (119) is integrally formed on the rear wall of the middle section (111a) of the first body, and an oil drain hole boss (1191) is provided in the middle of the bridge bag (119).

2. The integrated dual-airbag electric drive trailer axle according to claim 1, characterized in that: The disc brake assembly comprises: There are two first airbags (12a), and the two first airbags (12a) are fixedly connected to the two airbag mounting bosses (115) correspondingly; The front bracket boss (113) is fixedly connected to a first front bracket (13a); A first shock absorber (14a) is fixedly connected to the shock absorber rod boss (118); A first motor reducer assembly (15a) fixedly connected to the front end of the first body middle section (111a); The disc brake flange (116a) is fixedly connected with a first wheel end (17a), and the first wheel end (17a) is sleeved on the half-axle sleeve (117) on the same side; The first wheel end (17a) is fixedly connected to a first brake air chamber (16a); The output end of the first motor reducer assembly (15a) is fixedly connected to the input end of the first wheel end (17a).

3. The integrated dual-airbag electric drive trailer axle according to claim 1, characterized in that: The first trailer axle assembly (1) comprises a second trailer axle body (11b) and a drum brake assembly; The second trailer axle body (11b) is different from the first trailer axle body (11a) in that the disc brake flange (116a) is replaced by a drum brake flange (116b), and the first body middle section (111a) is replaced by the second body middle section (111b); The drum brake assembly comprises: A second air bag (12b), a second front bracket (13b), a second shock absorber (14b), a second motor reducer assembly (15b), a second brake air chamber (16b) and a second wheel end (17b); The assembly method of the second trailer axle body (11b) and the drum brake assembly is the same as the assembly method of the first trailer axle body (11a) and the disc brake assembly.

4. The integrated dual-airbag electric drive trailer axle according to claim 3, characterized in that: The cross section of the first body middle section (111a) is square; The cross section of the second body middle section (111b) is circular.

5. The integrated dual-airbag electric drive trailer axle according to claim 3, characterized in that: The half shaft sleeve (117) is of a split design, and after being positioned with the corresponding first trailer axle body (11a) and second trailer axle body (11b), it is welded into an integral whole.

6. The integrated dual-airbag electric drive trailer axle according to claim 3, characterized in that: The cross-sections of the front guide arms (112) and rear guide arms (114) of the first trailer axle body (11a) and the second trailer axle body (11b) are in the shape of a "door".

7. The integrated dual-airbag electric-driven trailer axle according to claim 3, characterized in that: The cross-sections of the front guide arms (112) and rear guide arms (114) of the first trailer axle body (11a) and the second trailer axle body (11b) are in the shape of a "square".

8. The integrated dual-airbag electric-driven trailer axle according to claim 3, characterized in that: The cross-sections of the front guide arms (112) and rear guide arms (114) of the first trailer axle body (11a) and the second trailer axle body (11b) are in the shape of a "worker".

9. The integrated dual-airbag electric-driven trailer axle according to claim 3, characterized in that: The cross-sections of the front guide arms (112) and rear guide arms (114) of the first trailer axle body (11a) and the second trailer axle body (11b) are in the shape of a "T".

10. The integrated dual-airbag electric drive trailer axle according to claim 3, characterized in that: The cross-sections of the front guide arms (112) and rear guide arms (114) of the first trailer axle body (11a) and the second trailer axle body (11b) are in the shape of a "mountain".

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