CN221794782U - Vehicle assembly positioning structure and vehicle assembly fixture - Google Patents

Abstract

The embodiment of the present application relates to the field of vehicle assembly technology, and discloses a vehicle assembly positioning structure and a vehicle assembly tool, wherein the vehicle assembly positioning structure is used to assemble the front sub-frame assembly and the front extension beam assembly of the vehicle, and comprises: a frame; a pair of first positioning parts, which are arranged at intervals along the length direction of the frame, and are respectively suitable for connecting with the first positioning holes on the front sub-frame assembly; a second positioning part, which is arranged at one end of the frame away from the pair of first positioning parts, and is suitable for connecting with the second positioning hole on the front extension beam assembly; the pair of first positioning parts and the second positioning parts are arranged as the three vertices of a virtual triangle structure. The vehicle assembly positioning structure provided by the present application adopts a pair of first positioning parts and a second positioning part, which can pre-position the front sub-frame assembly and the front extension beam assembly at a set position, and then assemble the front sub-frame assembly and the front extension beam assembly, which significantly improves the assembly accuracy of the front sub-frame assembly and the front extension beam assembly.

Description

Vehicle assembly positioning structure and vehicle assembly tooling

Technical Field

The embodiments of the present application relate to the technical field of vehicle assembly, and in particular to a vehicle assembly positioning structure and a vehicle assembly tool.

Background Art

The front subframe assembly of a vehicle is an important component of the vehicle body, and its structural strength and installation accuracy are required to be high. The front subframe assembly generally needs to be assembled and fixed with the front extension beam assembly on the vehicle chassis.

Since the front subframe assembly is heavy, the weight distribution of each part is uneven, and there are a large number of irregular concave and convex surfaces on the surface, it is difficult to assemble the front extension beam assembly and the front subframe assembly, and the assembly accuracy is difficult to ensure.

At present, there is a tooling that first fixes the front subframe assembly on the bracket and then assembles it with the front extension beam assembly. The defect of this structure is that the front extension beam assembly is easily misaligned when assembling with the front extension beam assembly, resulting in poor assembly accuracy of the front subframe assembly and the front extension beam assembly.

Summary of the invention

In view of this, an embodiment of the present application provides a vehicle assembly positioning structure and a vehicle assembly tool, which can pre-fix the positions of the front subframe assembly and the front extension beam assembly to avoid misalignment between the two during assembly, thereby improving the assembly accuracy of the front subframe assembly and the front extension beam assembly.

In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

In a first aspect, an embodiment of the present application provides a vehicle assembly positioning structure for assembling a front subframe assembly and a front extension beam assembly of a vehicle, comprising: a frame; a pair of first positioning portions, which are arranged at intervals along the length direction of the frame and are respectively suitable for connecting with first positioning holes on the front subframe assembly; a second positioning portion, which is arranged at one end of the frame away from the pair of first positioning portions and is suitable for connecting with the second positioning hole on the front extension beam assembly; the pair of first positioning portions and the second positioning portion are arranged as three vertices of a virtual triangle structure.

The vehicle assembly positioning structure provided in the embodiment of the present application adopts a pair of first positioning parts and a second positioning part, which can pre-position the front sub-frame assembly and the front extension beam assembly at the set position, and then assemble the front sub-frame assembly and the front extension beam assembly, thereby reducing the relative displacement of the front sub-frame assembly or the front extension beam assembly due to force during assembly, resulting in assembly misalignment, that is, improving the position stability of the front sub-frame assembly and the front extension beam assembly during the assembly process, thereby significantly improving the assembly accuracy of the front sub-frame assembly and the front extension beam assembly.

In a possible implementation of the present application, one of the first positioning portions is disposed at one end of the frame in the length direction, and the other first positioning portion is disposed at a middle region in the length direction of the frame; the second positioning portion is disposed at the other end of the frame in the length direction.

In a possible implementation of the present application, the first positioning portion includes a first positioning column, which is fixedly connected to the bottom surface of the frame body and is suitable for being detachably connected to the first positioning hole of the front sub-frame assembly.

In a possible implementation of the present application, the second positioning portion includes a mounting bracket and a second positioning column, the second positioning column is fixedly connected to the frame through the mounting bracket, and is suitable for being detachably connected to the second positioning hole of the forward extension beam assembly.

In a possible implementation of the present application, the second positioning portion further includes a limit block, which is disposed between the mounting support and the second positioning column, and the lower surface of the limit block is suitable for fitting with the upper surface of the forward extension beam assembly.

In a possible implementation of the present application, the mounting support includes a first mounting plate and a second mounting plate, the first mounting plate is a right-angled triangle plate, one right-angled surface of which is fixedly connected to the frame body, the other right-angled surface is fixedly connected to one side surface of the second mounting plate, and the other side surface of the second mounting plate is fixedly connected to the limit block.

In a possible implementation of the present application, the frame forms a triangular structure, and a pair of first positioning portions and a second positioning portion are respectively located at three vertices of the triangular structure.

In a possible implementation of the present application, at least one weight-reducing hole is provided on the surface of the frame.

In a second aspect, an embodiment of the present application provides a vehicle assembly tool, comprising: two of the above-mentioned vehicle assembly positioning structures, the two vehicle assembly positioning structures are suitable for being arranged on opposite sides of a front subframe assembly and a front extension beam assembly.

A vehicle assembly tool provided in an embodiment of the present application has the same technical effect as the vehicle assembly positioning structure provided in any one of the embodiments of the above-mentioned aspect. Two vehicle assembly positioning structures are used to form a fastening structure with six positioning points. The relative displacement of the front subframe assembly or the front extension beam assembly due to force during assembly, which leads to assembly misalignment, improves the position stability of the front subframe assembly and the front extension beam assembly during the assembly process, and thus improves the assembly accuracy of the front subframe assembly and the front extension beam assembly.

In a possible implementation of the present application, two vehicle assembly positioning structures are arranged on opposite sides of the front subframe assembly and the front extension beam assembly in a mirror-symmetrical manner.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a vehicle assembly positioning structure provided in an embodiment of the present application;

FIG2 is a schematic diagram of a vehicle assembly tool provided in an embodiment of the present application;

FIG3 is a schematic diagram of the assembled front subframe assembly and the front extension beam assembly provided in an embodiment of the present application.

Reference numerals:

1. Frame; 101. Weight reduction hole; 2. First positioning portion; 3. Second positioning portion; 301. Mounting support; 3011. First mounting plate; 3012. Second mounting plate; 302. Second positioning column; 303. Limiting block; 4. Front subframe assembly; 401. First positioning hole; 402. Front subframe body; 403. Front subframe longitudinal beam; 5. Front extension beam assembly; 501. Second positioning hole.

DETAILED DESCRIPTION

In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the specific technical scheme of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

On the one hand, referring to FIG. 1 , an embodiment of the present application provides a vehicle assembly positioning structure for assembling a front subframe assembly 4 and a front extension beam assembly 5 of a vehicle, and mainly comprises: a frame body 1, a pair of first positioning portions 2 and a second positioning portion 3. The pair of first positioning portions 2 are arranged at intervals along the length direction of the frame body 1, and are respectively suitable for connecting with the first positioning holes 401 on the front subframe assembly 4. The second positioning portion 3 is arranged at one end of the frame body 1 away from the pair of first positioning portions 2, and is suitable for connecting with the second positioning hole 501 on the front extension beam assembly 5. The pair of first positioning portions 2 and the second positioning portion 3 are arranged as the three vertices of a virtual triangle structure.

The vehicle assembly positioning structure provided in the embodiment of the present application adopts a pair of first positioning parts 2 and a second positioning part 3, which can pre-position the front sub-frame assembly 4 and the front extension beam assembly 5 at the set position, and then assemble the front sub-frame assembly 4 and the front extension beam assembly 5, thereby reducing the relative displacement of the front sub-frame assembly 4 or the front extension beam assembly 5 due to force during assembly, resulting in assembly dislocation. That is, the stability of the front sub-frame assembly 4 and the front extension beam assembly 5 during the assembly process is improved, thereby significantly improving the assembly accuracy of the front sub-frame assembly 4 and the front extension beam assembly 5, and finally ensuring the overall assembly quality of the vehicle. In addition, a pair of first positioning parts 2 and a second positioning part 3 are arranged as the three vertices of a virtual triangle structure, which can form a stable triangular support structure, which is conducive to positioning the relative position of the front sub-frame assembly 4 and the front extension beam assembly 5.

It should be noted that the embodiment of the present application does not limit the connection method between the first positioning portion 2 and the first positioning hole 401 on the front sub-frame assembly 4, nor does it limit the connection method between the second positioning portion 3 and the second positioning hole 501 on the front extension beam assembly 5. As long as the pre-positioning of the front sub-frame assembly 4 and the front extension beam assembly 5 can be completed.

Specifically, the set positions of the front sub-frame assembly 4 and the front extension beam assembly 5 are the relative positions of the front sub-frame assembly 4 and the front extension beam assembly 5 after they are assembled. Since the structures of different front sub-frame assemblies 4 and front extension beam assemblies 5 are different, the actual assembly scenarios of the two are different. Therefore, it is necessary to select the opening position of the first positioning hole 401 in the front sub-frame assembly 4 and the opening position of the second positioning hole 501 in the front extension beam assembly 5 in advance according to the area where the positioning holes can be drilled in the front sub-frame assembly 4 and the front extension beam assembly 5. Then, the relative positions of the first positioning part 2 and the second positioning part 3 are determined according to the corresponding positions of the first positioning hole 401 and the second positioning hole 501 after assembly.

For example, referring to FIG. 2 and FIG. 3 , since a convex portion with high structural strength is formed on one side of the front sub-frame assembly 4 close to the front extension beam assembly 5, the first positioning hole 401 formed in the convex portion has little effect on the structure of the front sub-frame assembly 4. Therefore, a main positioning reference hole can be formed in the convex portion, and a secondary positioning reference hole can be formed in the middle area of the front sub-frame assembly 4. The main positioning reference hole and the secondary positioning reference hole constitute a pair of first positioning holes 401 of the front sub-frame assembly 4. A second positioning hole 501 is formed in the area of the front extension beam assembly 5 close to the front sub-frame assembly 4.

Therefore, in some embodiments of the present application, referring to FIG. 1 , one of the first positioning portions 2 is disposed at one end of the frame 1 in the length direction, and is connected with the secondary positioning reference hole. Another first positioning portion 2 is disposed in the middle area of the frame 1 in the length direction, and is connected with the main positioning reference hole. A pair of first positioning portions 2 is adapted to the main positioning reference hole and the secondary positioning reference hole on the front sub-frame assembly 4. The second positioning portion 3 is disposed at the other end of the frame 1 in the length direction, and is connected with the second positioning hole 501 on the front extension beam assembly 5.

Furthermore, in some embodiments of the present application, the first positioning portion 2 includes a first positioning column, which is fixedly connected to the bottom surface of the frame body 1 and is suitable for being detachably connected to the first positioning hole 401 of the front sub-frame assembly 4, with a simple structure and convenient use.

It should be noted that the first positioning column and the bottom surface of the frame 1 can be fixedly connected in a manner of a snap-fit fixing structure or a fastener fixing structure, and the present application does not limit this. Compared with the snap-fit fixing structure, the fastener fixing structure is more secure. In one possible implementation of the present application, the first positioning column and the bottom surface of the frame 1 are fixedly connected by bolts.

In addition, there is no limitation on the detachable connection between the first positioning column and the first positioning hole 401 of the front sub-frame assembly 4. In one possible implementation of the present application, the first positioning column can be a positioning pin, which is detachably connected to the second positioning hole 501 by plugging and unplugging, which has low cost and is conducive to promotion.

Considering that there is a large height difference between the surface of the raised portion of the front subframe assembly 4 and the surface of the front extension beam assembly 5, the second positioning portion 3 needs to extend a longer distance to be matched and connected with the second positioning hole 501. If the second positioning portion 3 directly adopts a longer positioning column structure, the dimensional error is large, which is easy to affect the matching accuracy of the second positioning portion 3 and the second positioning hole 501. In addition, the longer positioning column structure also increases the area that is easily damaged, so it is also easy to be damaged.

Thus, further, in some embodiments of the present application, the second positioning portion 3 includes a mounting support 301 and a second positioning column 302. The second positioning column 302 is fixedly connected to the frame body 1 through the mounting support 301, and is suitable for being detachably connected to the second positioning hole 501 of the front extension beam assembly 5. That is, the embodiment of the present application adopts the mounting support 301 to be first fixedly connected to the frame body 1 to fill the surface height difference between the front sub-frame assembly 4 and the front extension beam assembly 5, and to improve the structural strength of the second positioning portion 3. The second positioning column 302 is then fixedly connected to the mounting support 301, shortening the use length of the second positioning column 302 to ensure the matching accuracy between the second positioning column 302 and the second positioning hole 501, which is beneficial to the assembly of the front sub-frame assembly 4 and the front extension beam assembly 5.

Furthermore, the second positioning portion 3 also includes a limit block 303, which is arranged between the mounting support 301 and the second positioning column 302, and the lower surface of the limit block 303 is suitable for fitting with the upper surface of the front extension beam assembly 5. The limit block 303 can limit the movement of the front extension beam assembly 5 in the vertical direction, and further limit the relative position of the front extension beam assembly 5 and the front subframe assembly 4, so as to further improve the assembly accuracy of the two. In addition, after the assembler presses the limit block 303 to make its lower surface fit with the upper surface of the front extension beam assembly 5, it can also play the effect of reminding the assembler that the vehicle assembly positioning structure has been installed, which is convenient for assembly.

Exemplarily, in the embodiment of the present application, the mounting support 301 includes a first mounting plate 3011 and a second mounting plate 3012. Referring to FIG. 1 and FIG. 2 , the first mounting plate 3011 is a right-angled triangular plate, and the second mounting plate 3012 is an L-shaped right-angled plate, so as to meet the structural strength requirements of the mounting support 301 and fill the surface height difference between the front sub-frame assembly 4 and the front extension beam assembly 5. Specifically, one right-angled surface of the first mounting plate 3011 is fixedly connected to the frame body 1, and the other right-angled surface is fixedly connected to a right-angled surface of the second mounting plate 3012, and the other right-angled surface of the second mounting plate 3012 is fixedly connected to the upper surface of the limit block 303.

It should be noted that the embodiments of the present application do not limit the manner in which the first mounting plate 3011 is fixedly connected to the frame 1, the manner in which the first mounting plate 3011 is fixedly connected to the second mounting plate 3012, and the manner in which the second mounting plate 3012 is fixedly connected to the limit block 303. The manner of fixed connection may be a snap-fit fixed structure, or may be a fastener-type fixed structure. Exemplarily, in one possible implementation of the present application, in order to enhance fastening and structural strength, the first mounting plate 3011 is fixedly connected to the frame 1 and the second mounting plate 3012 respectively by bolts, and the second mounting plate 3012 is also fixedly connected to the limit block 303 by bolts.

In addition, the embodiments of the present application do not limit the limit block 303 and the second positioning column 302. In order to reduce the use cost and facilitate use, the second positioning column 302 can also be selected as a positioning pin. The limit block 303 can be adapted to the positioning pin to form an arc-shaped protrusion on one side thereof, and a threaded hole is opened in the axial direction of the arc-shaped protrusion. The upper end of the second positioning column 302 is formed with an external thread and fixed to the limit block 303.

Furthermore, the frame 1 is used to support a pair of first positioning portions 2 and a second positioning portion 3. The frame 1 can be a square, triangular or arc-shaped structure, etc., and the present application does not impose any restrictions on this. Since the triangular structure is more stable than the square and arc-shaped structures, in addition, the pair of first positioning portions 2 and the second positioning portions 3 themselves need to be constructed into a virtual triangular structure. Therefore, in one implementable method of the present application, the frame 1 forms a quasi-triangular structure, and a pair of first positioning portions 2 and the second positioning portions 3 are respectively located at the three vertices of the triangular structure to adapt to the installation positions of the pair of first positioning portions 2 and the second positioning portions 3, and to improve the structural stability of the frame 1, which is conducive to improving the service life of the vehicle assembly positioning structure.

Furthermore, the surface of the frame 1 is provided with weight-reducing holes 101, which can reduce the weight of the frame 1, meet the lightweight design requirements, and facilitate the use of the assembler. At the same time, the assembler can also take and place the frame 1 through the weight-reducing holes 101, which is convenient for use. The number of weight-reducing holes 101 can be set to one, two, or more than two as needed; the shape of the weight-reducing holes 101 can be set to round, square, triangular, etc. as needed, and this application does not limit this.

For example, referring to FIG. 1 , two triangular weight-reducing holes 101 are provided on the surface of the frame 1, so that the frame 1 is formed into a quasi-triangular structure by combining two right-angled triangular structures, which can reduce the weight of the frame 1 while ensuring the structural stability of the frame 1. In addition, the three corners of the quasi-triangular structure of the frame 1 are rounded to prevent the corners of the frame 1 from accidentally injuring the assembler or vehicle parts.

On the other hand, on this basis, with reference to FIG. 2 , an embodiment of the present application further provides a vehicle assembly tool, comprising: two of the above-mentioned vehicle assembly positioning structures. The two vehicle assembly positioning structures are suitable for being arranged on opposite sides of the front sub-frame assembly 4 and the front extension beam assembly 5. Two vehicle assembly positioning structures are used, with two pairs of first positioning parts 2 and two second positioning parts 3, to form a fastening structure with six positioning points, which can completely limit the horizontal freedom of the front sub-frame assembly 4 and the front extension beam assembly 5. The assembly dislocation caused by the relative displacement of the front sub-frame assembly 4 or the front extension beam assembly 5 due to the force generated during assembly is reduced, and the position stability of the front sub-frame assembly 4 and the front extension beam assembly 5 during the assembly process is improved, thereby improving the assembly accuracy of the front sub-frame assembly 4 and the front extension beam assembly 5.

It should be noted that, referring to FIG. 3 , it is necessary to open two pairs of first positioning holes 401 in the front subframe assembly 4 and two second positioning holes 501 in the front extension beam assembly 5 in advance to adapt to the two vehicle assembly positioning structures.

In some embodiments of the present application, referring to FIG. 2 , since the structures of the front subframe assembly 4 and the front extension beam assembly 5 are generally symmetrical, in order to facilitate assembly, two vehicle assembly positioning structures are arranged on opposite sides of the front subframe assembly 4 and the front extension beam assembly 5 in a mirror-symmetrical manner.

In some other embodiments, the specific installation positions of the two vehicle assembly positioning structures can also be selected and adapted according to the actual structures of the front subframe assembly 4 and the front extension beam assembly 5. In this regard, the embodiments of the present application do not impose too many restrictions.

Further, in some embodiments of the present application, referring to Fig. 2, the front subframe assembly 4 includes a front subframe body 402 and a pair of front subframe longitudinal beams 403. The front subframe body 402 is fixedly assembled with the front extension beam assembly 5 through the pair of front subframe longitudinal beams 403.

In order to facilitate the placement of the front sub-frame assembly 4 and the front extension beam assembly 5, the front sub-frame assembly 4 and the front extension beam assembly 5 can be placed on a dispensing pallet in advance, and the dispensing pallet is used to perform a rough positioning first, and then the two vehicle assembly positioning structures are respectively installed on the opposite sides of the front sub-frame assembly 4 and the front extension beam assembly 5 to further improve the assembly accuracy of the front sub-frame assembly 4 and the front extension beam assembly 5.

The assembly process of the embodiment of the present application is as follows:

The front sub-frame assembly 4 and the front extension beam assembly 5 are placed on the sub-assembly pallet in advance. Then, a pair of first positioning parts 2 of a vehicle assembly positioning structure are respectively inserted into a pair of first positioning holes 401 on the front sub-frame assembly 4, and a second positioning part 3 is inserted into a second positioning hole 501 of the front extension beam assembly 5, and the frame body 1 is pressed so that the lower surface of the limit block 303 is in contact with the upper surface of the front extension beam assembly 5, so as to realize the positioning of one side of the front sub-frame assembly 4 and the front extension beam assembly 5.

Then, insert a pair of first positioning parts 2 of another vehicle assembly positioning structure into another pair of first positioning holes 401 on the front sub-frame assembly 4, and insert the second positioning part 3 into another second positioning hole 501 of the front extension beam assembly 5. Similarly, press the frame 1 so that the lower surface of the limit block 303 fits with the upper surface of the front extension beam assembly 5, so as to realize the positioning of the other side of the front sub-frame assembly 4 and the front extension beam assembly 5.

Next, the two ends of a pair of front sub-frame longitudinal beams 403 are respectively fixed and locked to the front sub-frame body 402 and the front extension beam assembly 5 by connecting bolts. Finally, the two vehicle assembly positioning structures are removed to complete the assembly, and the rear front sub-frame assembly 4 and the front extension beam assembly 5 are assembled, as shown in FIG3 .

The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims (10)

1. A vehicle assembling and positioning structure for assembling a front subframe assembly (4) and a front rail assembly (5) of a vehicle, characterized by comprising:

A frame body (1);

A pair of first positioning parts (2) which are arranged at intervals along the length direction of the frame body (1) and are respectively suitable for being connected with first positioning holes (401) on the front auxiliary frame assembly (4);

The second positioning parts (3) are arranged at one ends of the frame body (1) far away from the pair of first positioning parts (2) and are suitable for being connected with second positioning holes (501) on the front extension beam assembly (5);

The pair of first positioning parts (2) and the pair of second positioning parts (3) are arranged into three vertexes of a virtual triangle structure.

2. The vehicle assembling and positioning structure according to claim 1, wherein one of the first positioning portions (2) is provided at one end of the frame body (1) in the longitudinal direction, and the other of the first positioning portions (2) is provided at a middle region of the frame body (1) in the longitudinal direction; the second positioning part (3) is arranged at the other end of the frame body (1) in the length direction.

3. The vehicle assembly positioning structure according to claim 2, wherein the first positioning portion (2) includes a first positioning column fixedly connected to the bottom surface of the frame body (1) and adapted to be detachably connected to the first positioning hole (401) of the front subframe assembly (4).

4. The vehicle assembling and positioning structure according to claim 2, wherein the second positioning portion (3) includes a mounting support (301) and a second positioning post (302), and the second positioning post (302) is fixedly connected with the frame body (1) through the mounting support (301) and is adapted to be detachably connected with a second positioning hole (501) of the front extension beam assembly (5).

5. The vehicle assembling and positioning structure according to claim 4, wherein the second positioning portion (3) further includes a stopper (303), the stopper (303) is provided between the mounting bracket (301) and the second positioning post (302), and a lower surface of the stopper (303) is adapted to be fitted to an upper surface of the forward-extending beam assembly (5).

6. The vehicle assembling and positioning structure according to claim 5, wherein the mounting support (301) includes a first mounting board (3011) and a second mounting board (3012), the first mounting board (3011) is a right-angle triangle, one right-angle surface of the first mounting board is fixedly connected with the frame body (1), the other right-angle surface is fixedly connected with one side surface of the second mounting board (3012), and the other side surface of the second mounting board (3012) is fixedly connected with the limiting block (303).

7. The vehicle-mounted positioning structure according to any one of claims 1 to 6, wherein the frame body (1) forms a triangle-like structure, and a pair of the first positioning portions (2) and the second positioning portions (3) are respectively located at three vertexes of the triangle-like structure.

8. The vehicle assembly positioning structure according to claim 7, characterized in that the surface of the frame body (1) is provided with at least one lightening hole (101).

9. The utility model provides a vehicle assembly fixture which characterized in that includes:

The vehicle mounting location structure of any one of the two claims 1 to 8, both of said vehicle mounting location structures being adapted to be provided on opposite sides of a front subframe assembly (4) and a front rail assembly (5).

10. The vehicle assembly fixture according to claim 9, wherein two of the vehicle assembly positioning structures are mirror-symmetrically disposed on opposite sides of the front subframe assembly (4) and the front extension beam assembly (5).