Vehicle traction system and vehicle

Abstract

A vehicle traction system and a vehicle relate to the field of vehicle traction, the traction system comprises a cross beam, a traction part and a mounting part, the cross beam comprises a main body section and connecting sections located at the left end and the right end of the cross beam, the main body section is configured to protrude backwards relative to the connecting sections in the X direction, and the traction part is mounted on the main body section and used for realizing a traction function; the mounting part is connected with the connecting section and used for connecting the cross beam to a longitudinal beam of a vehicle body, the mounting part is configured to comprise a protruding piece protruding out of the rear end of the connecting section, and the main body section can make contact with a rear bumper before the connecting section when a vehicle has a rear forward collision. The protruding piece can make contact with the rear bumper before the connecting section when the rear portion of the vehicle is in offset collision, and the collision safety of the rear portion of the vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle traction technology, and in particular to a vehicle traction system and vehicle. Background Technology

[0002] A tow hook is an important component mounted at the rear of a vehicle for towing. It can pull vehicles that have lost their driving function or are in inaccessible environments (such as mud, ditches, or other harsh conditions). When a rear-end collision occurs, the rear bumper is subjected to impact. If it deforms severely, it can easily lead to structural damage to the rear of the vehicle. Since the tow hook is located close to the rear bumper, it is highly likely to exacerbate damage to the rear bumper during a collision, resulting in poor collision safety. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a vehicle traction system and vehicle that can improve the protection performance of the rear of the vehicle and help improve the collision safety of the vehicle.

[0004] This utility model provides a vehicle traction system, including:

[0005] A crossbeam includes a main body segment and connecting segments located at its left and right ends, the main body segment being configured to project rearward relative to the connecting segments in the X direction;

[0006] A traction unit, installed on the main body section, is used to realize the traction function;

[0007] The mounting portion is connected to the connecting section for connecting the crossbeam to the vehicle body longitudinal beam, and the mounting portion is configured to include a protrusion extending from the rear end of the connecting section.

[0008] The vehicle traction system proposed in this utility model configures the main body section to protrude rearward relative to the connecting sections. In the event of a frontal collision at the rear of the vehicle, the main body section contacts the rear bumper before the connecting sections at both ends, effectively acting as a collision buffer. This prevents the rear bumper from undergoing significant deformation during a collision, thus protecting the rear structure of the vehicle, such as the taillights and trunk lid, and avoiding severe collision damage to the rear of the vehicle. The mounting part is configured with a protrusion extending from the rear end of the connecting section. In the event of an offset collision at the rear of the vehicle, the protrusion contacts the rear bumper before the connecting section, acting as a buffer to prevent the connecting section from receiving a large impact. The protrusion, in conjunction with the connecting section, prevents the rear bumper from undergoing significant deformation during a collision, providing good protection for the vehicle body. The protrusion, in conjunction with the main body section, protects the stability of the rear structure of the vehicle, improving the vehicle's collision safety and reliability.

[0009] In one embodiment, the free end of the connecting segment is configured to protrude from the mounting portion in the Y direction.

[0010] In one embodiment, the length of the connecting segment in the Y direction gradually increases from top to bottom, such that the end face of the free end of the connecting segment is an inclined plane.

[0011] In one embodiment, the crossbeam further includes a transition section disposed between the main body section and the connecting section, one end of the transition section being connected to the main body section and the other end being connected to the connecting section, the transition section being arc-shapedly connected to the main body section, and / or the transition section being arc-shapedly connected to the connecting section.

[0012] In one embodiment, at least one of the main body segment and the connecting segment extends along the Y direction. When both the main body segment and the connecting segment extend along the Y direction, their orthographic projections in the Y direction do not coincide or do not completely coincide.

[0013] In one embodiment, the crossbeam is a square tube or a square hollow tube; or, the traction part includes a mounting base and a tow hook. The mounting base is connected to the main body section, and the tow hook is detachably mounted on the mounting base. The mounting base includes a top plate and side plates. The top plate is connected to the upper end of the main body section, and the front end of the top plate protrudes beyond the front end of the main body section. The two side plates are spaced apart along the Y direction, and are connected to the front end of the main body section, with their upper ends connected to the top plate. The top plate and the two side plates cooperate to form an installation space for mounting the tow hook.

[0014] In one embodiment, the mounting portion includes a reinforcing seat and a connecting seat. The reinforcing seat is connected to the connecting segment, and the connecting seat is used to connect the reinforcing seat to the vehicle body longitudinal beam. The reinforcing seat includes at least one reinforcing arm. When the reinforcing arm is connected to the connecting segment, its rear end protrudes beyond the rear end of the connecting segment to form the protrusion.

[0015] In one embodiment, the reinforcing arm has a positioning groove that mates with the connecting section. The positioning groove extends through the reinforcing arm along the Y direction, and the connecting section passes through the positioning groove to connect with the reinforcing arm.

[0016] In one embodiment, the height dimension of the front end of the reinforcing arm is greater than the height dimension of its rear end.

[0017] This utility model also proposes a vehicle, including the above-mentioned vehicle traction system, as well as a rear bumper and a body longitudinal beam, wherein the crossbeam is disposed on the front side of the rear bumper, the rear bumper has an avoidance opening that cooperates with the traction unit, and the mounting part is connected to the body longitudinal beam.

[0018] The vehicle with the aforementioned vehicle traction system proposed in this utility model provides enhanced protection for the rear of the vehicle. Through the design of the main body and connecting sections, it provides good structural support and collision buffering, which helps protect the structural stability of the rear bumper during a collision. This avoids problems such as deformation or damage to the taillights and trunk lid due to excessive deformation of the rear bumper, thus protecting the stability of the rear structure of the vehicle and improving the vehicle's collision safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the traction system and vehicle body assembly according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the traction unit according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the mounting part according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a connector according to an embodiment of the present invention.

[0025] In the picture:

[0026] 100 - Rear bumper; 101 - Clearance opening; 102 - Vehicle body longitudinal beam;

[0027] 10-Crossbeam; 11-Main body section; 12-Connecting section; 13-Transition section;

[0028] 20-Traction unit; 21-Mounting base; 211-Top plate; 212-Side plate; 213-Fixing component; 22-Tow hook; 23-Tow hook seat; 24-Locking component; 25-Connector support; 26-Base plate; 261-First connecting plate; 262-Second connecting plate;

[0029] 30-Mounting part; 301-Protrusion; 31-Reinforcing seat; 311-Reinforcing arm; 312-Positioning groove; 32-Connecting seat; 321-Plate; 322-Through part; 323-Reinforcing plate. Detailed Implementation

[0030] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0031] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0032] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0034] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0035] like Figure 1 As shown in the coordinate system, the X, Y, and Z directions in the coordinate system are based on the vehicle coordinate system. The vehicle coordinate system is a special moving coordinate system used to describe the motion of a car. The origin of this coordinate system coincides with the center of mass of the vehicle. When the vehicle is stationary on a horizontal road, the X direction of this coordinate system refers to the direction parallel to the direction of the car's travel, that is, the front-to-back direction, where the arrow indicates the front. The Y direction refers to the width direction of the car, that is, the left-to-right direction, where the arrow indicates the left. The Z direction refers to the height direction of the car, that is, the up-down direction, where the arrow indicates the up.

[0036] Combination Figure 1 and Figure 2 The vehicle traction system proposed in this utility model includes:

[0037] The crossbeam 10 includes a main body section 11 and a connecting section 12, the connecting section 12 being located at the left and right ends of the main body section 11, and the main body section 11 being configured to protrude rearward relative to the connecting section 12 in the X direction;

[0038] The traction unit 20 is installed on the main body section 11 and is used to realize the traction function;

[0039] The mounting part 30 is connected to the connecting section 12 and is used to connect the crossbeam 10 to the vehicle body longitudinal beam 102. The mounting part 30 is configured to include a protrusion 301 protruding from the rear end of the connecting section 12.

[0040] The main body segment 11 is configured to protrude rearward relative to the connecting segment 12. In the event of a frontal collision at the rear of the vehicle, the main body segment 11 contacts the rear bumper 100 before the connecting segments 12 at both ends, which helps to buffer the collision and prevents the rear bumper 100 from undergoing large deformation during the collision. This, in turn, protects the rear structure of the vehicle, such as the taillights and the trunk lid, and avoids severe collision damage to the rear of the vehicle. The mounting part 30 is configured to include a protrusion 301 protruding from the rear end of the connecting segment 12. In the event of an offset collision at the rear of the vehicle, the protrusion 301 contacts the rear bumper 100 before the connecting segment 12. The protrusion 301 acts as a buffer, preventing the connecting segment 12 from suffering large collision impact. The protrusion 301, in conjunction with the connecting segment 12, prevents the rear bumper 100 from undergoing large deformation during the collision, providing good protection for the vehicle body. The protrusion 301, in conjunction with the main body segment 11, helps to protect the stability of the rear structure of the vehicle, improving the collision safety and reliability of the vehicle.

[0041] As an optional implementation method, such as Figure 1 As shown, the crossbeam 10 is installed on the front side of the rear bumper 100. The rear bumper 100 has an avoidance opening 101. The position of the avoidance opening 101 corresponds to the position of the traction part 20, so as to avoid the traction part 20 and prevent structural interference between the traction part 20 and the rear bumper 100.

[0042] As an optional implementation method, such as Figure 2 As shown, the crossbeam 10 also includes a transition section 13 disposed between the main body section 11 and the connecting section 12. One end of the transition section 13 is connected to the main body section 11, and the other end is connected to the connecting section 12. The transition section 13 is connected to the main body section 11 in an arc shape, and / or the transition section 13 is connected to the connecting section 12 in an arc shape. That is, the transition section 13 is arc-shaped at the connection with the main body section 11 and / or the connecting section 12, so as to ensure that the structure of the crossbeam 10 is smooth and natural, and avoid its sharp edges from causing damage to the rear bumper 100 during the collision. Moreover, the arc-shaped connection can ensure the structural strength and stability of the crossbeam 10 and improve the collision buffering capacity of the crossbeam 10.

[0043] In one example scheme, refer to Figure 2 At least one of the main body segment 11 and the connecting segment 12 extends along the Y direction. Optionally, both the main body segment 11 and the connecting segment 12 extend along the Y direction, that is, the main body segment 11 and the connecting segment 12 are parallel, and their orthogonal projections in the Y direction do not coincide or do not completely coincide. This arrangement can ensure that the crossbeam 10 as a whole has good structural strength, so that the crossbeam 10 has a good collision protection effect on the rear bumper 100, and can also save the space occupied by the crossbeam 10, which facilitates the arrangement of the traction unit 20 and the installation unit 30.

[0044] In one example, the main body segment 11, connecting segment 12, and arc segment 13 are connected by welding. In another example, the crossbeam 10 is a bent-formed component. By bending, the aforementioned main body segment 11, connecting segment 12, and arc segment 13 are formed, which ensures the structural consistency and overall structural stability of the crossbeam 10, and eliminates the splicing process, thus improving the processing efficiency of the crossbeam 10.

[0045] In one example design, the crossbeam 10 uses a square tubular component, which, compared to a traditional round tubular structure, increases the contact area between the crossbeam 10 and the rear bumper 100 during a rear-end collision, thus improving the collision buffering effect. In another example design, the crossbeam 10 uses a square hollow tubular component, which ensures the structural strength of the crossbeam 10 while also reducing the overall weight.

[0046] In one example, since one end of the connecting segment 12 is connected to the main body segment 11 or the transition segment 13, and the other end is a free end, the free end of the connecting segment 12 is configured to protrude from the mounting portion 30 in the Y direction, so that in the event of an offset collision or side collision at the rear of the vehicle, it can contact the rear bumper 100 or the collision object before the mounting portion 30, thereby playing a collision buffer role, protecting the mounting portion 30, and protecting the vehicle body structure as much as possible, which is beneficial to improving collision safety.

[0047] Optionally, such as Figure 2 As shown, the length of the connecting segment 12 in the Y direction gradually increases from top to bottom, so that the end face of the free end of the connecting segment 12 is a slope. This setting can avoid the rear structure of the vehicle body and increase the end face area of ​​the connecting segment 12, thereby increasing the collision contact area. It can support the rear bumper 100 during the collision, so as to avoid the rear bumper 100 from undergoing large deformation and causing damage to the vehicle's taillights.

[0048] As an optional implementation method, such as Figure 2 As shown, the traction unit 20 includes a mounting base 21 and a tow hook 22. The mounting base 21 is connected to the main body section 11, and the tow hook 22 is detachably mounted on the mounting base 21 to facilitate the installation and removal of the tow hook 22 according to traction requirements. Figure 3The mounting base 21 includes a top plate 211 and two side plates 212. The top plate 211 is connected to the upper end of the main body section 11, and the front end of the top plate 211 protrudes from the front end of the main body section 11. The two side plates 212 are spaced apart along the Y direction. The two side plates 212 are connected to the front end of the main body section 11, and their upper ends are connected to the top plate 211. The top plate 211 and the two side plates 212 cooperate to form an installation space for installing the tow hook 22.

[0049] The top plate 211 increases the structural strength of the main body section 11. The top plate 211, together with the two side plates 212, can support and strengthen the front end of the main body section 11. When the rear of the vehicle collides, it can ensure the structural stability of the main body section 11, thereby preventing the rear bumper 100 from undergoing severe deformation during the collision. The mounting bracket 21 can not only install the tow hook 22, but also strengthen the main body section 11.

[0050] In one example, the top plate 211 is connected to the upper end of the main body section 11 by welding to ensure the connection strength of the top plate 211. The crossbeam 10 is made of square tubing, which helps to increase the connection area between the top plate 211 and the main body section 11 and improves the connection quality of the top plate 211.

[0051] In one example, the two side plates 212 are connected to the main body section 11 and the top plate 211 by welding, which can improve the connection strength between the mounting base 21 and the main body section 11.

[0052] In an example scheme, such as Figure 3 As shown, the traction unit 20 also includes a tow hook seat 23, which is installed in the installation space and connected to the two side plates 212. The tow hook seat 23 includes a receiving cavity with an opening at the lower end, and the tow hook 22 is installed in the receiving cavity from bottom to top. The tow hook 22 can be installed through the tow hook seat 23.

[0053] For example, fixing holes are provided on both side plates 212 and the hook seat 23, and fixing members 213 are installed in the fixing holes. The fixing members 213 are used to connect the hook seat 23 to the two side plates 212. Optionally, the fixing members 213 are bolts, and the hook seat 23 can be detachably installed by the cooperation of the bolts and nuts.

[0054] For example, such as Figure 3 As shown, the tow hook seat 23 is also provided with a locking member 24. The locking member 24 is used to detachably install the tow hook 22 to the tow hook seat 23 to prevent the tow hook 22 from coming out of the receiving cavity and to prevent the tow hook 22 from shaking relative to the tow hook seat 23 during use. This ensures the stability and reliability of the tow hook 22 installation, avoids abnormal noise from the tow hook 22, and helps to ensure the quality of the trailer.

[0055] When the towing function is needed, the tow hook 22 is installed through the tow hook seat 23 and locked through the locking piece 24 to ensure the quality of the trailer. When the towing function is not needed, the tow hook 22 can be removed and stored, which can avoid the corrosion and damage to the tow hook 22 caused by the complex driving environment of the vehicle (such as rainy days and muddy roads), and is easy to install and remove.

[0056] In an example scheme, such as Figure 3 As shown, the towing unit 20 also includes a connector bracket 25, which is mounted on the main body section 11 and used to install a trailer auxiliary power supply to provide auxiliary power to the vehicle to be towed (such as a large vehicle or a motorhome). Optionally, the trailer auxiliary power supply can use a 7-pin socket or a 13-pin socket.

[0057] For example, the connector support 25 is configured to rotate relative to the main body section 11. When the trailer auxiliary power is not needed, the connector support 25 can be rotated between the main body section 11 and the rear bumper 100 to hide the connector support 25, preventing it from being exposed to the rear bumper 100 and affecting the overall aesthetics. This can protect the connector support 25 and the trailer auxiliary power, and will not affect the departure angle when the vehicle is driving.

[0058] like Figure 3 As shown, the connector support 25 is rotatably mounted on the main body section 11 via the base plate 26. The base plate 26 includes a first connecting plate 261 and a second connecting plate 262. The first connecting plate 261 is connected to the lower end of the main body section 11, and the second connecting plate 262 is configured to be parallel to the rear end face of the main body section 11. The connector support 25 is mounted on the second connecting plate 262 via a shaft, so that it can rotate relative to the second connecting plate 262 around the shaft to change the position of the connector support 25 relative to the rear guard 100. The structure is simple, the operation is convenient, and the overall safety is improved.

[0059] Optionally, the first connecting plate 261 is connected to the lower end of the main body section 11 by welding to ensure the installation quality of the base plate 26.

[0060] Optionally, the first connecting plate 261 and the second connecting plate 262 are integrally formed.

[0061] As an optional implementation method, such as Figure 4 As shown, the mounting part 30 includes a reinforcing seat 31 and a connecting seat 32. The reinforcing seat 31 is connected to the connecting section 12, and the connecting seat 32 is used to connect the reinforcing seat 31 and the vehicle body longitudinal beam 102. The reinforcing seat 31 and the connecting seat 32 cooperate to install the crossbeam 10 onto the vehicle body longitudinal beam 102. The reinforcing seat 31 includes at least one reinforcing arm 311. When the reinforcing arm 311 is connected to the connecting section 12, its rear end protrudes from the rear end of the connecting section 12 to form a protrusion 301.

[0062] In an example scheme, such as Figure 4 As shown, a positioning groove 312 is provided on the reinforcing arm 311 to cooperate with the connecting section 12. The positioning groove 312 passes through the reinforcing arm 311 along the Y direction. The connecting section 12 passes through the positioning groove 312 to connect with the reinforcing arm 311. More specifically, the groove wall of the positioning groove 312 contacts the end face of the connecting section 12 to realize the quick positioning and installation of the reinforcing arm 311 and the connecting section 12. When the reinforcing arm 311 passes through the positioning groove 312 onto the connecting section 12, the rear end of the reinforcing arm 311 protrudes from the rear end of the connecting section 12 to form a protrusion 301.

[0063] The positioning groove 312 enables the positioning of the reinforcing arm 311 and the connecting section 12, facilitating their fixed connection and improving installation efficiency. Optionally, the reinforcing arm 311 and the connecting section 12 can be connected by welding. When the crossbeam 10 uses a square tube, the positioning groove 312 can increase the weld length, improving welding quality, ensuring connection stability, and extending service life.

[0064] Optionally, two reinforcing arms 311 are provided, which are parallel and spaced apart in the Y direction. The reinforcing seat 31 is U-shaped. This arrangement can increase the connection strength with the connecting section 12. When the rear of the vehicle collides, the two protrusions 301 cooperate with the rear bumper 100 to form a crumple space, which can concentrate the deformation of the rear bumper 100 within the crumple space and play a collision buffering role.

[0065] Optionally, the rear end face of the reinforcing arm 311 can be flat or curved to increase the contact area with the rear bumper 100 during a collision, and to provide good support and collision buffer for the rear bumper 100.

[0066] In one example, the height dimension (in the Z direction) of the front end of the reinforcing arm 311 is greater than the height dimension of its rear end. This arrangement allows the portion of the reinforcing arm 311 located at the front of the connecting segment 12 to provide sufficient support for the connecting segment 12, which is beneficial to improving the structural strength of the connecting segment 12. The portion of the reinforcing arm 311 located at the rear of the connecting segment 12 (i.e., the protrusion 301) can provide collision protection for the rear bumper 100.

[0067] In an example scheme, such as Figure 5 As shown, the connecting seat 32 includes a plate 321 and a through member 322. The front end of the plate 321 is connected to the through member 322. The plate 321 is connected to the reinforcing seat 31. The through member 322 is connected to the vehicle body longitudinal beam 102. The plate 321 and the reinforcing seat 31 cooperate to connect the crossbeam 10 to the vehicle body longitudinal beam 102.

[0068] Optionally, plate 321 and reinforcing base 31 are detachably connected by screws.

[0069] Optionally, plate 321 and through member 322 are connected by welding. In an optional embodiment, the connecting seat 32 further includes a reinforcing plate 323. Plate 321 and reinforcing plate 323 are provided with through grooves that mate with through member 322. Through member 32 passes through the through grooves onto plate 321 and reinforcing plate 323. The addition of reinforcing plate 323 can increase the contact area and weld length, which is beneficial to ensuring connection quality.

[0070] Optionally, the through-piece 322 is detachably connected to the vehicle body longitudinal beam 102 by means of bolts. When connected, the through-piece 322 is inserted into the vehicle body longitudinal beam 102.

[0071] Optionally, the 322 fitting may be made of steel profile.

[0072] Reference Figure 1 The present invention also proposes a vehicle, including the above-mentioned vehicle traction system, rear bumper 100 and body longitudinal beam 102, wherein the crossbeam 10 is disposed on the front side of the rear bumper 100, and the rear bumper 100 is provided with an avoidance opening 101, which cooperates with the traction part 20 to avoid the traction part 20, so as to avoid structural interference between the traction part 20 and the rear bumper 100. The mounting part 30 is connected to the body longitudinal beam 102 to realize the installation and fixation of the crossbeam 10.

[0073] In one example configuration, a first safety gap is provided between the main body section 11 and the rear guard 100.

[0074] In one example configuration, a second safety clearance is provided between the protrusion 301 and the rear guard 100. Optionally, the first safety clearance and the second safety clearance have the same X-axis dimension.

[0075] In one example, the vehicle proposed in this utility model can be a medium-sized or large-sized vehicle, an electric vehicle, a hybrid vehicle, etc.

[0076] The vehicle with the aforementioned vehicle traction system proposed in this utility model provides enhanced protection for the rear of the vehicle. Through the arrangement of the main body section 11 and the connecting section 12, it can provide good structural support and collision buffering, which helps protect the structural stability of the rear bumper 100 during a collision and avoids problems such as deformation or damage to the taillights and trunk lid due to excessive deformation of the rear bumper 100. This helps protect the stability of the rear structure of the vehicle body and improves the collision safety of the vehicle.

[0077] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle traction system, characterized in that, The utility model relates to a kind of crossbeam and its installation part, including: Crossbeam (10), including main body section (11) and the connecting section (12) at its left and right ends, the main body section (11) is configured to be backward convex relative to the connecting section (12) in X direction; Towing part (20), installed on the main body section (11), for realizing towing function; And installation part (30) is connected with the connecting section (12), for connecting the crossbeam (10) with the body longitudinal beam (102), the installation part (30) is configured to include the protruding piece (301) protruding from the rear end of the connecting section (12).

2. The vehicle traction system of claim 1, wherein, The free end of the connecting section (12) is configured to be convex to the installation part (30) in Y direction.

3. The vehicle traction system of claim 2, wherein, The length dimension of the connecting section (12) in Y direction gradually increases from top to bottom, so that the end surface of the free end of the connecting section (12) is inclined.

4. The vehicle traction system of claim 1, wherein, The crossbeam (10) further includes a transition section (13) disposed between the main body section (11) and the connecting section (12), one end of the transition section (13) is connected with the main body section (11), the other end is connected with the connecting section (12), the transition section (13) is arc-shaped connected with the main body section (11), and / or the transition section (13) is arc-shaped connected with the connecting section (12).

5. Vehicle traction system according to claim 1 or 4, characterized in that At least one of the main body section (11) and the connecting section (12) extends in Y direction, when both the main body section (11) and the connecting section (12) extend in Y direction, the orthographic projection of the main body section (11) and the connecting section (12) in Y direction do not coincide or do not completely coincide.

6. The vehicle traction system of claim 1, wherein, The crossbeam (10) adopts a square tube or a square hollow tube, or the towing part (20) includes a mounting seat (21) and a tow hook (22), the mounting seat (21) is connected with the main body section (11), the tow hook (22) is detachably mounted on the mounting seat (21), the mounting seat (21) includes a top plate (211) and a side plate (212), the top plate (211) is connected with the upper end of the main body section (11), and the front end of the top plate (211) protrudes from the front end of the main body section (11), the two side plates (212) are spaced apart in Y direction, the two side plates (212) are connected with the front end of the main body section (11), and the upper end is connected with the top plate (211), the top plate (211) and the two side plates (212) cooperate to form a mounting space for mounting the tow hook (22).

7. The vehicle traction system of claim 1, wherein, The installation part (30) includes a reinforcing seat (31) and a connecting seat (32), the reinforcing seat (31) is connected with the connecting section (12), the connecting seat (32) is used for connecting the reinforcing seat (31) with the body longitudinal beam (102), the reinforcing seat (31) includes at least one reinforcing arm (311), when the reinforcing arm (311) is connected with the connecting section (12), the rear end thereof protrudes from the rear end of the connecting section (12) to form the protruding piece (301).

8. The vehicle traction system of claim 7, wherein, A positioning slot (312) is formed on the reinforcing arm (311) and cooperates with the connecting section (12). The positioning slot (312) penetrates the reinforcing arm (311) along the Y direction. The connecting section (12) is arranged in the positioning slot (312) to connect with the reinforcing arm (311).

9. Vehicle traction system according to claim 7 or 8, characterized in that The height dimension of the front end of the reinforcing arm (311) is greater than that of the rear end.

10. A vehicle characterized by comprising: The vehicle traction system comprises the vehicle traction system according to any one of claims 1 to 9, a rear shelf (100) and a vehicle body longitudinal beam (102). The cross beam (10) is arranged on the front side of the rear shelf (100). An avoiding opening (101) is formed on the rear shelf (100) and cooperates with the traction part (20). The mounting part (30) is connected with the vehicle body longitudinal beam (102).

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