Driving assembly four-point suspension fixing structure suitable for new energy heavy truck

Abstract

The utility model discloses a driving assembly four-point suspension fixing structure suitable for a new energy heavy truck. The driving assembly four-point suspension fixing structure comprises a first fixing body. The two groups of first fixing bodies are respectively fixed at two ends of the frame through bolts; the first fixing body is connected with a fixed connecting body; the second fixing body is respectively connected with the motor connecting body and the fixed connecting body; the first fixing body, the fixing connector and the second fixing body are sequentially connected with one another and symmetrically distributed on the two sides of the motor connector to form a first suspension fixing point and a second suspension fixing point. The two groups of third fixing bodies are respectively fixed at two ends of the frame through bolts; the fourth fixing body is connected with the third fixing body on one side through a bolt; the fifth fixing body is connected with the third fixing body on the other side through a bolt; the two sets of third fixing bodies, the fourth fixing body and the fifth fixing body are asymmetrically distributed on the two sides of the transmission connecting body correspondingly to form a third suspension fixing point and a fourth suspension fixing point. And a four-point suspension fixing mode is adopted, so that modularization of parts is realized, and the assembly efficiency of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a four-point suspension fixing structure of a drive assembly suitable for new energy heavy trucks. Background Art

[0002] At present, with the country attaching great importance to environmental protection, in order to promote the sustainable and stable development of my country's ecological civilization, new energy heavy-duty trucks, as a branch of new energy vehicles, stand out with low pollution and low operating costs compared to traditional fuel heavy-duty trucks; at the same time, new energy heavy-duty trucks replace traditional engines and gearboxes with electric motor drive assemblies, and the energy source is upgraded from the traditional "thermal energy converted into mechanical energy" to "electrical energy converted into mechanical energy", providing driving force for vehicle driving.

[0003] As the power source of new energy heavy-duty trucks, the drive assembly provides high-torque and high-speed power transmission for the entire vehicle; the suspension system, as an elastic connection system between the drive assembly (motor and gearbox) and the frame, is directly related to the vibration transmission between the drive assembly and the body, affecting the vibration and noise performance of the entire vehicle; in the suspension system, the suspension plays an important role in supporting the drive assembly, attenuating and isolating the vibration of the drive assembly, and has an important impact on the vibration and noise level of the entire vehicle; and the suspension bracket plays an important role in connecting the suspension with the drive assembly and the frame; the drive assembly suspension bracket structure is related to the layout of the drive assembly and the structural layout of the various components of the frame, and the suspension bracket layout angle and position will also affect the vibration isolation performance of the entire vehicle; the powertrain suspension layout can be divided into two-point suspension, four-point suspension, and six-point suspension according to the number of suspensions.

[0004] Therefore, based on the four-point suspension and with the goal of reducing weight and configuration, a four-point suspension fixing method for the drive assembly suitable for new energy heavy-duty trucks was designed. Utility Model Content

[0005] The purpose of the utility model is to provide a four-point suspension fixing structure for a drive assembly suitable for new energy heavy trucks, which adopts a four-point fixing method to connect the drive assembly system to the frame, has supporting, vibration reduction and limiting functions, avoids displacement and deformation, reduces the number of parts, realizes modularization of parts, and improves the assembly efficiency of the whole vehicle.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck, the fixing structure is connected between the drive assembly and the frame, the drive assembly has a motor connecting body and a transmission connecting body, the motor connecting body and the transmission connecting body are internally driven by gear meshing, and the motor connecting body and the transmission connecting body are externally fastened by bolts, including:

[0008] A first fixed body, a fixed connecting body, a second fixed body, a third fixed body, a fourth fixed body and a fifth fixed body;

[0009] Two groups of the first fixing bodies are respectively fixed to two ends of the frame by bolts;

[0010] The first fixed body is connected to a fixed connecting body;

[0011] The second fixed body is connected to the motor connecting body and the fixed connecting body respectively;

[0012] The first fixed body, the fixed connection body, and the second fixed body are sequentially connected to each other and symmetrically distributed on both sides of the motor connection body to form a first suspension fixing point and a second suspension fixing point;

[0013] The two sets of third fixing bodies are respectively fixed to two ends of the frame by bolts;

[0014] The fourth fixing body is connected to the third fixing body on one side by bolts;

[0015] The fifth fixing body is connected to the third fixing body on the other side by bolts;

[0016] The two groups of the third fixing bodies are respectively asymmetrically distributed with the fourth fixing body and the fifth fixing body on both sides of the transmission connecting body to form a third suspension fixing point and a fourth suspension fixing point.

[0017] Furthermore, the first fixing body has an integrally formed first mounting portion and a second mounting portion;

[0018] The first mounting portion and the second mounting portion form an obtuse angle;

[0019] A first protrusion is formed on the first mounting portion;

[0020] A bolt hole is formed on the first raised portion;

[0021] The second mounting portion is provided with two bolt holes;

[0022] The first mounting portion is fixedly connected to the vehicle frame by bolts.

[0023] Furthermore, the fixed connection body has a top plate, a bottom plate and a rubber plate;

[0024] The rubber plate is connected between the top plate and the bottom plate through a vulcanization process;

[0025] The top plate and the bottom plate are respectively provided with three bolt holes;

[0026] The top plate is fitted on the second mounting portion;

[0027] Bolts are installed in the second and third bolt holes at corresponding positions to achieve connection and fixation between the fixed connecting body and the first fixed body.

[0028] Furthermore, the second fixing body has an integrally formed third mounting portion and a fourth mounting portion;

[0029] The third mounting portion and the fourth mounting portion are respectively provided with four bolt holes;

[0030] The third mounting portion is clamped on the bottom plate and connected to the corresponding bolt hole portion 4 and bolt hole portion 3 through bolts to achieve the installation and fixation of the second fixing body and the fixing connecting body;

[0031] The fourth mounting portion is fixedly connected to the motor connecting body by bolts;

[0032] The third mounting portion is parallel to the second mounting portion.

[0033] Furthermore, the third fixing body has an integrally formed fifth mounting portion and a sixth mounting portion;

[0034] The fifth mounting portion and the sixth mounting portion are vertically distributed at 90°;

[0035] A second protrusion is formed on the fifth mounting portion;

[0036] The second raised portion is provided with five bolt holes;

[0037] The sixth mounting portion is provided with six bolt holes;

[0038] The second protrusion is fixedly connected to the vehicle frame by bolts.

[0039] Furthermore, the fourth fixing body has an integrally formed seventh mounting portion and an eighth mounting portion;

[0040] The seventh mounting portion and the eighth mounting portion form an angle of 90° and form two sets of first L-shaped mounting grooves;

[0041] The seventh mounting portion is provided with seven bolt holes;

[0042] The eighth mounting portion is provided with eight bolt holes and one weight reduction hole;

[0043] The fourth fixing body is connected and fixed to the third fixing body by bolts connected to the seventh bolt hole and the sixth bolt hole at corresponding positions;

[0044] The eighth mounting portion is fixedly connected to the transmission connecting body by means of bolts.

[0045] Furthermore, the fifth fixing body has an integrally formed ninth mounting portion and a tenth mounting portion;

[0046] The ninth mounting portion and the tenth mounting portion form an angle of 90° and form two sets of second L-shaped mounting grooves;

[0047] The ninth mounting portion is provided with nine bolt holes;

[0048] The tenth mounting portion is provided with ten bolt holes and two weight reduction holes;

[0049] The vertical cross-sectional thickness of the tenth mounting portion gradually decreases from top to bottom;

[0050] The fifth fixing body is connected and fixed to the third fixing body by bolts connected to the ninth bolt hole and the sixth bolt hole at corresponding positions;

[0051] The tenth mounting portion is fixedly connected to the transmission connecting body by means of bolts.

[0052] Furthermore, the first fixing body, the fourth fixing body and the fifth fixing body are respectively made of ZG310 material;

[0053] The top plate and bottom plate are made of Q355B steel respectively;

[0054] The surface material of the third fixed body is QT450;

[0055] The inner material of the third fixing body is natural rubber.

[0056] In the above technical solution, the utility model is a four-point suspension fixing structure of a drive assembly suitable for new energy heavy trucks, which has the following beneficial effects:

[0057] The utility model designs a four-point suspension fixing method for a drive assembly applied to new energy vehicle models such as pure electric, battery swap, and hydrogen fuel. The drive assembly system is connected to the frame to play a supporting, vibration reduction, and limiting role, avoiding excessive static displacement, resisting the displacement deformation of the drive assembly under large torque, and effectively reducing vibration transmission; at the same time, the number of parts is reduced, the modularization of parts is realized, and the assembly efficiency of the whole vehicle is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0059] Figure 1 A schematic diagram of a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck provided in an embodiment of the utility model;

[0060] Figure 2 A schematic diagram of the structure of the first suspension fixing point in a four-point suspension fixing structure of a drive assembly applicable to a new energy heavy truck provided by an embodiment of the utility model;

[0061] Figure 3 A schematic diagram of the structure of the second suspension fixing point in a four-point suspension fixing structure of a drive assembly applicable to a new energy heavy truck provided by an embodiment of the utility model;

[0062] Figure 4 A schematic diagram of the structure of the third suspension fixing point in a four-point suspension fixing structure of a drive assembly applicable to a new energy heavy truck provided by an embodiment of the utility model;

[0063] Figure 5 A schematic diagram of the structure of the fourth suspension fixing point in a four-point suspension fixing structure of a drive assembly applicable to a new energy heavy truck provided by an embodiment of the utility model;

[0064] Figure 6 A schematic diagram of the structure of a first fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided in an embodiment of the utility model;

[0065] Figure 7 A schematic diagram of the structure of a first fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided in an embodiment of the utility model;

[0066] Figure 8 A schematic diagram of the structure of a fixed connecting body in a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0067] Fig. 9 A schematic diagram of the structure of a fixed connecting body in a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0068] Fig.10 A schematic diagram of the structure of a second fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0069] Fig.11 A schematic diagram of the structure of a third fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0070] Fig.12 A schematic diagram of the structure of a third fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0071] Fig.13A schematic diagram of the structure of a fourth fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0072] Fig.14 A schematic diagram of the structure of a fourth fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck provided by an embodiment of the utility model;

[0073] Fig.15 A schematic diagram of the structure of a fifth fixed body in a four-point suspension fixed structure of a drive assembly applicable to a new energy heavy truck provided by an embodiment of the utility model;

[0074] Fig.16 The present invention provides a schematic structural diagram of a fifth fixed body in a four-point suspension fixed structure of a drive assembly suitable for a new energy heavy truck according to an embodiment of the present invention.

[0075] Description of reference numerals:

[0076] 1. Motor connecting body; 2. Transmission connecting body; 3. First fixed body; 4. Fixed connecting body; 5. Second fixed body; 6. Third fixed body; 7. Fourth fixed body; 8. Fifth fixed body;

[0077] 301, first mounting portion; 302, second mounting portion; 303, first raised portion; 304, first bolt hole portion; 305, second bolt hole portion;

[0078] 401, top plate; 402, bottom plate; 403, rubber plate; 404, three bolt holes;

[0079] 501, third mounting portion; 502, fourth mounting portion; 503, fourth bolt hole portion;

[0080] 601, fifth mounting portion; 602, sixth mounting portion; 603, second raised portion; 604, fifth bolt hole portion; 605, sixth bolt hole portion;

[0081] 701, seventh mounting portion; 702, eighth mounting portion; 703, first L-shaped mounting groove; 704, seventh bolt hole; 705, eighth bolt hole; 706, first weight reduction hole;

[0082] 801, ninth mounting portion; 802, tenth mounting portion; 803, second L-shaped mounting groove; 804, ninth bolt hole; 805, tenth bolt hole; 806, second weight reduction hole;

[0083] A, the first suspension fixing point; B, the second suspension fixing point; C, the third suspension fixing point; D, the fourth suspension fixing point. DETAILED DESCRIPTION

[0084] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0085] It should be noted that the terms "two ends", "one side", "the other side", "upper", "surface", "inside", etc. used in this article indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description. Similar expressions are only for the purpose of explanation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", "fourth", "fifth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0086] See also Figure 1-Figure 16 As shown;

[0087] A four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck, comprising:

[0088] The fixing structure is connected between the drive assembly and the frame. The drive assembly has a motor connector 1 and a transmission connector 2. The motor connector 1 and the transmission connector 2 are internally engaged and driven by gears. The motor connector 1 and the transmission connector 2 are externally fastened and connected by bolts, including:

[0089] A first fixed body 3, a fixed connecting body 4, a second fixed body 5, a third fixed body 6, a fourth fixed body 7 and a fifth fixed body 8;

[0090] Two sets of first fixing bodies 3 are respectively fixed to two ends of the frame by bolts;

[0091] The first fixed body 3 is connected to a fixed connecting body 4;

[0092] The second fixed body 5 is connected to the motor connecting body 1 and the fixed connecting body 4 respectively;

[0093] The first fixed body 3, the fixed connection body 4, and the second fixed body 5 are sequentially connected to each other and symmetrically distributed on both sides of the motor connection body 1 to form a first suspension fixing point A and a second suspension fixing point B;

[0094] Two sets of third fixing bodies 6 are respectively fixed to two ends of the frame by bolts;

[0095] The fourth fixing body 7 is connected to the third fixing body 6 on one side by bolts;

[0096] The fifth fixing body 8 is connected to the third fixing body 6 on the other side by bolts;

[0097] The two groups of third fixing bodies 6 are asymmetrically distributed with the fourth fixing body 7 and the fifth fixing body 8 on both sides of the transmission connecting body 2 to form a third suspension fixing point C and a fourth suspension fixing point D.

[0098] Specifically, a four-point suspension fixing structure for a drive assembly suitable for new energy heavy trucks is suitable for new energy models such as pure electric, battery replacement, and hydrogen fuel. The motor connector 1 and the transmission connector 2 are respectively suspended and fixed at two points. The first suspension fixing point A and the second suspension fixing point B are symmetrically distributed on both sides of the motor connector 1, and the third suspension fixing point C and the fourth suspension fixing point D are asymmetrically distributed on both sides of the transmission connector 2 (low on the left and high on the right), thereby realizing four-point suspension fixing;

[0099] Among them, the first suspension fixing point A and the second suspension fixing point B have the same structure, and are respectively composed of a first fixed body 3, a fixed connecting body 4, and a second fixed body 5; the third suspension fixing point C is composed of a third fixed body 6 and a fourth fixed body 7; and the fourth suspension fixing point D is composed of a third fixed body 6 and a fifth fixed body 8.

[0100] The first fixed body 3 has an integrally formed first mounting portion 301 and a second mounting portion 302;

[0101] The first mounting portion 301 and the second mounting portion 302 form an obtuse angle;

[0102] A first protrusion 303 is formed on the first mounting portion 301;

[0103] A bolt hole 304 is formed on the first protruding portion 303;

[0104] The second mounting portion 302 is provided with two bolt holes 305;

[0105] The first mounting portion 301 is fixedly connected to the vehicle frame by means of bolts.

[0106] Specifically, the first fixed body 3 is connected between the frame and the fixed connecting body 4 at the same time. The first fixed body 3 has a first mounting portion 301 and a second mounting portion 302. The first mounting portion 301 is provided with a first bolt hole portion 304. The first mounting portion 301 is fixed to the frame end by bolts, and its clamping surface is a boss structure, i.e., a first protrusion 303. The size of the first protrusion 303 is approximately twice the hole diameter; the second mounting portion 302 forms an obtuse angle with the first mounting portion 301, and the mounting surface is a plane. The second mounting portion 302 is provided with a second bolt hole portion 305, and the second mounting portion 302 is connected to the fixed connecting body 4 by bolts.

[0107] The fixed connection body 4 has a top plate 401, a bottom plate 402 and a rubber plate 403;

[0108] The rubber plate 403 is connected between the top plate 401 and the bottom plate 402 through a vulcanization process;

[0109] Three bolt holes 404 are respectively provided on the top plate 401 and the bottom plate 402;

[0110] The top plate 401 is located on the second mounting portion 302;

[0111] Bolts are installed in the second bolt hole portion 305 and the third bolt hole portion 404 at corresponding positions to achieve the connection and fixation of the fixed connecting body 4 and the first fixed body 3 .

[0112] Specifically, the fixed connection body 4 has a top plate 401, a bottom plate 402 and a rubber plate 403. The top plate 401, the bottom plate 402 and the natural rubber 403 are connected by a vulcanization process to play a vibration isolation role and resist the displacement deformation generated by the drive assembly under a large torque;

[0113] Among them, three bolt holes 404 are opened on the top plate 401 and the bottom plate 402. During installation, the top plate 401 is placed on the second installation part 302, and the positions of the three bolt holes 404 and the two bolt holes 305 are aligned and then connected with bolts, so as to install and fix the fixed connecting body 4 and the first fixed body 3.

[0114] The second fixing body 5 has an integrally formed third mounting portion 501 and a fourth mounting portion 502;

[0115] The third mounting portion 501 and the fourth mounting portion 502 are respectively provided with four bolt holes 503;

[0116] The third mounting portion 501 is clamped on the bottom plate 402 and connected to the corresponding bolt hole portion 403 and the bolt hole portion 404 by bolts to achieve the installation and fixation of the second fixing body 5 and the fixing connecting body 4;

[0117] The fourth mounting portion 502 is fixedly connected to the motor connecting body 1 by means of bolts;

[0118] The third mounting portion 501 is located parallel to the second mounting portion 302 .

[0119] Specifically, the second fixed body 5 has a third mounting portion 501 and a fourth mounting portion 502, and the third mounting portion 501 and the fourth mounting portion 502 are provided with a fourth bolt hole 503, and the fourth mounting portion 502 is fixed to the front end of the motor connecting body 1. During installation, the third mounting portion 501 is installed on the base plate 402, and the positions of the fourth bolt hole 503 and the third bolt hole 404 correspond to each other, and then the two are connected by bolts, so as to install and fix the second fixed body 5 and the fixed connecting body 4, and at the same time, the third mounting portion 501 is in parallel with the second mounting portion 302.

[0120] The third fixing body 6 has an integrally formed fifth mounting portion 601 and a sixth mounting portion 602;

[0121] The fifth mounting portion 601 and the sixth mounting portion 602 are vertically distributed at 90°;

[0122] A second protrusion 603 is formed on the fifth mounting portion 601;

[0123] The second protruding portion 603 is provided with a bolt hole 604;

[0124] The sixth mounting portion 602 is provided with a sixth bolt hole 605;

[0125] The second protrusion 603 is fixedly connected to the vehicle frame by means of bolts.

[0126] Specifically, the third fixed body 6 has a fifth mounting portion 601 and a sixth mounting portion 602, and the fifth mounting portion 601 and the sixth mounting portion 602 are respectively provided with a fifth bolt hole 604 and a sixth bolt hole 605, wherein the fifth mounting portion 601 is fixed to the frame end by bolts, and its clamping surface is a boss structure, i.e., a second protrusion 603, whose size is approximately twice the hole diameter; the sixth mounting portion 602 is arranged perpendicularly to the fifth mounting portion 601 at 90°.

[0127] The fourth fixing body 7 has an integrally formed seventh mounting portion 701 and an eighth mounting portion 702;

[0128] The seventh mounting portion 701 and the eighth mounting portion 702 form an angle of 90° and form two sets of first L-shaped mounting grooves 703;

[0129] The seventh mounting portion 701 is provided with a seventh bolt hole 704;

[0130] The eighth mounting portion 702 is provided with an eighth bolt hole 705 and a first weight reduction hole 706;

[0131] The fourth fixing body 7 is connected and fixed to the third fixing body 6 by bolts in the seventh bolt hole portion 704 and the sixth bolt hole portion 605 at corresponding positions;

[0132] The eighth mounting portion 702 is fixedly connected to the transmission connecting body 2 by means of bolts.

[0133] Specifically, the fourth fixing body 7 has a seventh mounting portion 701 and an eighth mounting portion 702. The seventh mounting portion 701 is provided with a seventh bolt hole 704. The seventh bolt hole 704 and the sixth bolt hole 605 are positioned correspondingly and connected by bolts, so as to connect the fourth fixing body 7 to the third fixing body 6.

[0134] The top of the fourth fixing body 7 is designed as a first L-shaped mounting groove 703 in both directions to increase local rigidity; the seventh mounting portion 701 and the eighth mounting portion 702 are arranged vertically at 90°;

[0135] Furthermore, the fourth fixed body 7 is designed as a "sickle-shaped" structure as a whole, and the eighth mounting portion 702 has a "Z-shaped" cross-section transition and is connected to the transmission connector 2 by bolts. The eighth mounting portion 702 is provided with a bolt hole portion 705 and a weight reduction hole portion 706. In the middle of the bolt hole portion 705 is a "bud-shaped" weight reduction hole portion 706. The weight reduction hole portion 706 can both reduce the weight of the entire vehicle and save raw materials.

[0136] The fifth fixing body 8 has an integrally formed ninth mounting portion 801 and a tenth mounting portion 802;

[0137] The ninth mounting portion 801 and the tenth mounting portion 802 form an angle of 90° and form two sets of second L-shaped mounting grooves 803;

[0138] The ninth mounting portion 801 is provided with a bolt hole 804;

[0139] The tenth mounting portion 802 is provided with a tenth bolt hole 805 and a second weight reduction hole 806;

[0140] The vertical cross-sectional thickness of the tenth mounting portion 802 gradually decreases from top to bottom;

[0141] The fifth fixing body 8 is connected and fixed to the third fixing body 6 by bolts connected in the corresponding bolt hole nine part 804 and the bolt hole six part 605;

[0142] The tenth mounting portion 802 is fixedly connected to the transmission connecting body 2 by means of bolts.

[0143] Specifically, the fifth fixing body 8 has a ninth mounting portion 801 and a tenth mounting portion 802. The ninth mounting portion 801 is provided with a ninth bolt hole 804. The ninth bolt hole 804 is positioned correspondingly to the sixth bolt hole 605 and connected by bolts, thereby connecting the fifth fixing body 8 to the third fixing body 6.

[0144] The top of the fifth fixing body 8 is designed as a second L-shaped mounting groove 803 in both directions; the ninth mounting portion 801 and the tenth mounting portion 802 are arranged vertically at 90°;

[0145] Furthermore, the cross-sectional thickness of the tenth mounting portion 802 decreases in a decreasing manner, and the thickness at the bottom is the smallest. The tenth mounting portion 802 is connected to the transmission connector 2 by bolts. The tenth mounting portion 802 is provided with a tenth bolt hole 805 and a second weight reduction hole 806. In the middle of the tenth bolt hole 805 is a "bud-shaped" second weight reduction hole 806, which reduces the weight of the entire vehicle and saves raw materials.

[0146] The first fixing body 3, the fourth fixing body 7 and the fifth fixing body 8 are respectively made of ZG310 material;

[0147] The top plate 401 and the bottom plate 402 are made of Q355B steel;

[0148] The surface material of the third fixed body 6 is QT450;

[0149] The inner material of the third fixing body 6 is natural rubber.

[0150] In the above technical solution, the utility model is a four-point suspension fixing structure of a drive assembly suitable for new energy heavy trucks, which has the following beneficial effects:

[0151] 1. The structure is changed from the traditional six-point fixation to a four-point fixation method, which reduces the number of parts, realizes the modularization of parts, improves the assembly efficiency of the whole vehicle, and reduces working hours;

[0152] 2. The structure is fixed at the rear end of the transmission connector in the way that the left side is lower and the right side is higher, which is conducive to the layout of the spatial structure and increases the distribution area of ​​the transmission gears;

[0153] 3. The fourth fixed body and the fifth fixed body of the structure are installed at different positions with respect to the transmission connecting body, one is longer than the other, which is conducive to releasing stress through displacement deformation and improving product reliability;

[0154] 4. The fourth and fifth fixing bodies of the structure are provided with "bud-shaped" weight-reducing holes, which not only saves the cost of raw materials but also contributes to the weight reduction of the entire vehicle.

[0155] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A four-point suspension fixing structure for a drive assembly suitable for a new energy heavy truck, the fixing structure being connected between the drive assembly and the vehicle frame, the drive assembly comprising a motor connecting body (1) and a transmission connecting body (2), the motor connecting body (1) and the transmission connecting body (2) being internally driven by gear meshing, and the motor connecting body (1) and the transmission connecting body (2) being externally fastened by bolts, characterized in that: include: A first fixed body (3), a fixed connecting body (4), a second fixed body (5), a third fixed body (6), a fourth fixed body (7) and a fifth fixed body (8); Two groups of the first fixing bodies (3) are respectively fixed to two ends of the frame by bolts; The first fixed body (3) is connected to a fixed connecting body (4); The second fixed body (5) is connected to the motor connecting body (1) and the fixed connecting body (4) respectively; The first fixing body (3), the fixing connecting body (4), and the second fixing body (5) are sequentially connected to each other and symmetrically distributed on both sides of the motor connecting body (1) to form a first suspension fixing point (A) and a second suspension fixing point (B); The two groups of third fixing bodies (6) are respectively fixed to two ends of the frame by bolts; The fourth fixing body (7) is connected to the third fixing body (6) on one side by means of bolts; The fifth fixing body (8) is connected to the third fixing body (6) on the other side by bolts; The two groups of third fixing bodies (6) are respectively asymmetrically distributed with the fourth fixing body (7) and the fifth fixing body (8) on both sides of the transmission connecting body (2) to form a third suspension fixing point (C) and a fourth suspension fixing point (D).

2. According to claim 1, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The first fixing body (3) has a first mounting portion (301) and a second mounting portion (302) formed in one piece; The first mounting portion (301) and the second mounting portion (302) form an obtuse angle; A first protrusion (303) is formed on the first mounting portion (301); A bolt hole (304) is provided on the first protruding portion (303); The second mounting portion (302) is provided with two bolt holes (305); The first mounting portion (301) is fixedly connected to the vehicle frame by means of bolts.

3. According to claim 2, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The fixed connection body (4) comprises a top plate (401), a bottom plate (402) and a rubber plate (403); The rubber plate (403) is connected between the top plate (401) and the bottom plate (402) through a vulcanization process; The top plate (401) and the bottom plate (402) are respectively provided with three bolt holes (404); The top plate (401) is located on the second mounting portion (302); Bolts are installed in the second bolt hole portion (305) and the third bolt hole portion (404) at corresponding positions to achieve connection and fixation of the fixed connection body (4) and the first fixed body (3).

4. According to claim 3, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The second fixing body (5) has an integrally formed third mounting portion (501) and a fourth mounting portion (502); The third mounting portion (501) and the fourth mounting portion (502) are respectively provided with four bolt holes (503); The third mounting portion (501) is clamped on the bottom plate (402) and connected to the corresponding bolt hole portion (503) and the bolt hole portion (404) by means of bolts to achieve mounting and fixing of the second fixed body (5) and the fixed connection body (4); The fourth mounting portion (502) is fixedly connected to the motor connecting body (1) by means of bolts; The third mounting portion (501) is located parallel to the second mounting portion (302).

5. According to claim 4, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The third fixing body (6) has an integrally formed fifth mounting portion (601) and a sixth mounting portion (602); The fifth mounting portion (601) and the sixth mounting portion (602) are vertically distributed at 90°; A second protrusion (603) is formed on the fifth mounting portion (601); The second protruding portion (603) is provided with five bolt holes (604); The sixth mounting portion (602) is provided with six bolt holes (605); The second protrusion (603) is fixedly connected to the vehicle frame by means of bolts.

6. According to claim 5, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The fourth fixing body (7) has an integrally formed seventh mounting portion (701) and an eighth mounting portion (702); The seventh mounting portion (701) and the eighth mounting portion (702) form an angle of 90° and form two sets of first L-shaped mounting grooves (703); The seventh mounting portion (701) is provided with seven bolt holes (704); The eighth mounting portion (702) is provided with an eighth bolt hole (705) and a first weight reduction hole (706); The fourth fixing body (7) is connected and fixed to the third fixing body (6) by bolts connected to the seventh bolt hole (704) and the sixth bolt hole (605) at corresponding positions; The eighth mounting portion (702) is fixedly connected to the transmission connecting body (2) by means of bolts.

7. According to claim 5, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The fifth fixing body (8) has an integrally formed ninth mounting portion (801) and a tenth mounting portion (802); The ninth mounting portion (801) and the tenth mounting portion (802) form an angle of 90° and form two sets of second L-shaped mounting grooves (803); The ninth mounting portion (801) is provided with a ninth bolt hole (804); The tenth mounting portion (802) is provided with ten bolt holes (805) and two weight reduction holes (806); The vertical cross-sectional thickness of the tenth mounting portion (802) gradually decreases from top to bottom; The fifth fixing body (8) is connected and fixed to the third fixing body (6) by bolts connected to the ninth bolt hole (804) and the sixth bolt hole (605) at corresponding positions; The tenth mounting portion (802) is fixedly connected to the transmission connecting body (2) by means of bolts.

8. According to claim 3, a four-point suspension fixing structure of a drive assembly suitable for a new energy heavy truck is characterized in that: The first fixing body (3), the fourth fixing body (7) and the fifth fixing body (8) are respectively made of ZG310 material; The top plate (401) and the bottom plate (402) are respectively made of Q355B steel; The surface material of the third fixing body (6) is QT450; The inner material of the third fixing body (6) is natural rubber.

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