阅读说明：本技术 一种车身前盖预匹配调整定位工装及安装工艺 (Vehicle body front cover pre-matching adjusting and positioning tool and mounting process ) 是由 顾正涛 于 2021-09-08 设计创作，主要内容包括：本发明提出了一种车身前盖预匹配调整定位工装及安装工艺,涉及汽车装配技术领域。一种车身前盖预匹配调整定位工装,包括框架,框架设有定位销、用于翼子板沿车身宽度方向定位的第一定位组件以及用于汽车前门定位的第二定位组件。采用本发明,其能够固定于车身,便于在汽车组装时对引擎盖、翼子板和汽车前门进行定位,便于引擎盖、翼子板和汽车前门的组装。此外本发明还提出一种安装工艺,包括上述的车身前盖预匹配调整定位工装,如此便于引擎盖、翼子板和汽车前门的组装。(The invention provides a pre-matching adjusting and positioning tool for a front cover of an automobile body and an installation process, and relates to the technical field of automobile assembly. The utility model provides a car body protecgulum matches adjustment location frock in advance, includes the frame, and the frame is equipped with the locating pin, is used for the fender to follow the first locating component of automobile body width direction location and is used for the second locating component of car qianmen location. By adopting the automobile front door fixing device, the automobile front door fixing device can be fixed on an automobile body, so that the engine cover, the fender and the automobile front door can be conveniently positioned during automobile assembly, and the engine cover, the fender and the automobile front door can be conveniently assembled. In addition, the invention also provides an installation process, which comprises the vehicle body front cover pre-matching adjusting and positioning tool, so that the engine cover, the fender and the front door of the automobile can be conveniently assembled.)

1. The utility model provides a car body protecgulum matches adjustment location frock in advance which characterized in that: the automobile front door positioning device comprises a frame, wherein the frame is provided with a positioning pin, a first positioning assembly used for positioning a fender along the width direction of an automobile body and a second positioning assembly used for positioning an automobile front door; the number of the positioning pins, the number of the first positioning assemblies and the number of the second positioning assemblies are two and the two positioning pins are respectively positioned on two sides of the frame.

2. The vehicle body front cover pre-matching adjusting and positioning tool according to claim 1, characterized in that: the first positioning assembly comprises a first mounting seat arranged on the frame, a first handle rotatably arranged on the first mounting seat, a first mounting frame arranged on the first handle, and a first positioning rod and a second positioning rod arranged on the first mounting frame; the first positioning rod is arranged on the inward side of the first mounting frame, and the second positioning rod is arranged on the outward side of the first mounting frame; the lowest position of the first positioning rod is higher than the lowest position of the second positioning rod.

3. The vehicle body front cover pre-matching adjusting and positioning tool according to claim 2, characterized in that: the first mounting base is provided with a clamping piece used for clamping the first handle.

4. The vehicle body front cover pre-matching adjusting and positioning tool according to claim 1, characterized in that: the second positioning assembly comprises a second mounting seat arranged on the frame, a second handle rotatably arranged on the second mounting seat, a second mounting frame arranged on the second handle, and a contour block arranged on the second mounting frame.

5. The vehicle body front cover pre-matching adjusting and positioning tool according to claim 4, characterized in that: the second mounting seat is provided with a clamping piece used for clamping the second handle.

6. The vehicle body front cover pre-matching adjusting and positioning tool according to claim 1, characterized in that: the frame is provided with a clamping assembly for clamping with a vehicle body, the clamping assembly comprises a third mounting seat, a third handle, a connecting block, a first connecting column, a second connecting column, a Z-shaped connecting piece, a connecting rod and a clamping jaw, the connecting block is hinged with the third mounting seat and the third handle respectively, one end of the first connecting column is hinged with the third handle, and the other end of the first connecting column is connected with one end of the connecting piece; one end of the second connecting column is connected with the other end of the connecting piece, and the other end of the second connecting column is hinged with one end of the connecting rod; the other end of the connecting rod is hinged with one end of the clamping jaw; the other end of the clamping jaw is a free end, and the clamping jaw is hinged to the third mounting seat.

7. An installation process, which is characterized in that: the vehicle body front cover pre-matching adjusting and positioning tool comprises the vehicle body front cover pre-matching adjusting and positioning tool as claimed in any one of claims 1 to 6, and further comprises

After the front door of the automobile is installed, before a fender is installed, a pre-matching adjusting and positioning tool for a front cover of the automobile body is placed on the automobile body, and a positioning pin is inserted into a positioning hole of a hinge of an engine cover;

rotating the second handle, turning the profiling block downwards to a working position, adjusting the position of the front door of the automobile according to the deviation between the profiling block and the front door of the automobile, and rotating the profiling block away from the front door of the automobile after the adjustment is finished;

the fender is preassembled on the existing mounting bracket, the first handle is rotated, the first locating rod and the second locating rod are turned downwards to a working position, the position of the fender is adjusted according to the deviation between the first locating rod and the second locating rod and the fender, the outer side wall of the fender is respectively abutted against the bottom of the first locating rod and the bottom of the second locating rod, then the fender is locked through bolts, and the front cover of the automobile body is taken down from the automobile body to be matched with the adjusting and locating tool in advance;

installing a positioning nut on a fixing bolt close to the rear of the engine cover, and pre-installing a fastening nut on the fixing bolt close to the front of the engine cover;

lifting the engine cover, sliding the preassembled fastening nut into a gap of the mounting hole in the front of the hinge, sliding the positioning nut above the hinge and embedding the positioning nut into the mounting hole in the rear of the hinge for positioning, lifting the head of the engine cover to be supported by a support rod, screwing the preassembled fastening nut by a torque gun, rotating the positioning nut, and finally mounting and screwing the fastening nut in the mounting hole in the rear of the hinge.

Technical Field

The invention relates to the technical field of automobile assembly, in particular to a pre-matching adjusting and positioning tool for a front cover of an automobile body and an installation process.

Background

The installation process of the opening and closing piece (door and cover) of the automobile body manufacturing workshop in the automobile manufacturing industry aims to meet the requirements of meeting the man-machine engineering and the assembly precision on the premise of meeting the productivity, and a set of popular process and equipment design is provided; however, the phenomenon that the matching precision meets the requirement after one-time assembly and rework is nearly one hundred percent of the requirement due to poor man-machine engineering generally exists, and the one-time quality qualification rate, the capacity and the traffic report rate are greatly influenced.

The typical problems of the prior art are as follows: after the front cover and the fender are installed, the gap and the surface difference between the front cover and the fender as well as the front door cannot be installed once and then are qualified, the fender harness has a huge body shape and is hung in the air, and the operation of the process of installing the fender is complicated and the working hours exceed the standard; the front cover mounting tool has poor man-machine engineering in the front cover mounting process; the specific reasons are as follows:

1. the front cover hinge is positioned by a tool, stable position precision is provided in the height direction relative to the side wall main positioning hole of the vehicle body, the height position of the front cover after installation is determined, the front door is installed and adjusted without reference to the side wall main positioning hole (the height of the front cover hinge) for matching, the rear part of the front fender is aligned with the rib line of the front door in the height direction, and finally the matching of the front cover and the front fender in the height direction (the gap and the surface difference) is in a problem;

2. the left and right fender panels are installed with a consistent gap (controlled by a gap block) with the left and right front doors, but the front and rear position degrees of the fender panels are accumulated by the matching deviation of the gaps between the rear door and the rear part of the side wall and between the front door and the rear door, so that the front and rear position degrees of the left and right fender panels are inconsistent. The front cover mounting tool is positioned on the vehicle body by two holes on the left fender and the right fender, so that the front cover mounting tool has offset fluctuation on the vehicle body, and the orientation of the front cover after the front cover is mounted is offset. Finally, the reworking is caused because unstable out-of-tolerance often occurs to the matching gaps and the surface differences of the front cover, the fender and the front door;

3. the fender harness is positioned on the vehicle body by adopting a main reference hole at the lower part of the front longitudinal beam, the harness is in a three-dimensional structure with a huge and heavy body, and is driven by a pneumatic hoist hung in the air, so that the operation is time-consuming;

4. the front cover harness is in a fixed tripod form, an operator needs to lift the front cover over the harness and then position the front cover on a positioning pin and a reference of the harness, the harness is taken out after the installation, one person needs to prop the front cover to a certain angle on the side surface, the harness is lifted out by the other person, and the whole man-machine is poor.

Disclosure of Invention

The invention aims to provide a pre-matching adjusting and positioning tool for a front cover of a vehicle body, which can be fixed on the vehicle body, is convenient for positioning an engine cover, a fender and a front door of the vehicle during vehicle assembly, and is convenient for assembling the engine cover, the fender and the front door of the vehicle.

Another object of the present invention is to provide an installation process that facilitates the assembly of the hood, fender and front door of the vehicle.

The embodiment of the invention is realized by the following steps:

in a first aspect, the embodiment of the application provides a vehicle body front cover pre-matching adjusting and positioning tool, which comprises a frame, wherein the frame is provided with a positioning pin, a first positioning assembly for positioning a fender along the width direction of a vehicle body and a second positioning assembly for positioning a front door of an automobile; the number of the positioning pins, the first positioning assemblies and the second positioning assemblies is two and the two positioning pins, the first positioning assemblies and the second positioning assemblies are respectively positioned on two sides of the frame.

Further, in some embodiments of the present invention, the first positioning assembly includes a first mounting seat disposed on the frame, a first handle rotatably disposed on the first mounting seat, a first mounting rack disposed on the first handle, and a first positioning rod and a second positioning rod disposed on the first mounting rack; the first positioning rod is arranged on the inward side of the first mounting frame, and the second positioning rod is arranged on the outward side of the first mounting frame; the lowest position of the first positioning rod is higher than the lowest position of the second positioning rod.

Further, in some embodiments of the present invention, the first mounting seat is provided with a clamping member for clamping the first handle.

Further, in some embodiments of the present invention, the second positioning assembly includes a second mounting seat disposed on the frame, a second handle rotatably disposed on the second mounting seat, a second mounting rack disposed on the second handle, and a contour block disposed on the second mounting rack.

Further, in some embodiments of the present invention, the second mounting seat is provided with a clamping member for clamping the second handle.

Further, in some embodiments of the present invention, the frame is provided with a clamping assembly for clamping with a vehicle body, the clamping assembly includes a third mounting seat, a third handle, a connecting block, a first connecting column, a second connecting column, a zigzag connecting piece, a connecting rod and a clamping jaw, the connecting block is hinged to the third mounting seat and the third handle, one end of the first connecting column is hinged to the third handle, and the other end of the first connecting column is connected to one end of the connecting piece; one end of the second connecting column is connected with the other end of the connecting piece, and the other end of the second connecting column is hinged with one end of the connecting rod; the other end of the connecting rod is hinged with one end of the clamping jaw; the other end of the clamping jaw is a free end, and the clamping jaw is hinged with the third mounting seat.

In a second aspect, an embodiment of the present application provides an installation process, including the foregoing vehicle body front cover pre-matching adjustment positioning tool, further including

After the front door of the automobile is installed, before a fender is installed, a pre-matching adjusting and positioning tool for a front cover of the automobile body is placed on the automobile body, and a positioning pin is inserted into a positioning hole of a hinge of an engine cover;

rotating the second handle, turning the profiling block downwards to a working position, adjusting the position of the front door of the automobile according to the deviation between the profiling block and the front door of the automobile, and rotating the profiling block away from the front door of the automobile after the adjustment is finished;

the fender is preassembled on the existing mounting bracket, the first handle is rotated, the first locating rod and the second locating rod are turned downwards to a working position, the position of the fender is adjusted according to the deviation between the first locating rod and the second locating rod and the fender, the outer side wall of the fender is respectively abutted against the bottom of the first locating rod and the bottom of the second locating rod, then the fender is locked through bolts, and the front cover of the automobile body is taken down from the automobile body to be matched with the adjusting and locating tool in advance;

installing a positioning nut on a fixing bolt close to the rear of the engine cover, and pre-installing a fastening nut on the fixing bolt close to the front of the engine cover;

lifting the engine cover, sliding the preassembled fastening nut into a gap of the mounting hole in the front of the hinge, sliding the positioning nut above the hinge and embedding the positioning nut into the mounting hole in the rear of the hinge for positioning, lifting the head of the engine cover to be supported by a support rod, screwing the preassembled fastening nut by a torque gun, rotating the positioning nut, and finally mounting and screwing the fastening nut in the mounting hole in the rear of the hinge.

Compared with the prior art, the embodiment of the invention at least has the following advantages or beneficial effects:

the embodiment of the invention provides a pre-matching adjusting and positioning tool for a front cover of an automobile body, which comprises a frame, wherein the frame is provided with a positioning pin, a first positioning assembly for positioning a fender along the width direction of the automobile body and a second positioning assembly for positioning a front door of an automobile; the number of the positioning pins, the first positioning assemblies and the second positioning assemblies is two and the two positioning pins, the first positioning assemblies and the second positioning assemblies are respectively positioned on two sides of the frame.

During the in-service use, after the car qianmen is installed, before the fender is installed, place the automobile body protecgulum in advance to match adjustment location frock on the automobile body, the locating pin inserts in the locating hole of the hinge of bonnet, the hinge of bonnet and the automobile body protecgulum in advance match adjustment location frock relative position and confirm this moment, so fix a position the adjustment to the fender along automobile body width direction through first locating component, fix a position the adjustment to the position of car qianmen through second locating component, and then can use the automobile body protecgulum in advance to match adjustment location frock as the benchmark, make the bonnet, fender and car qianmen fix a position, be convenient for the bonnet, the equipment of fender and car qianmen.

The embodiment of the invention also provides an installation process, which comprises the vehicle body front cover pre-matching adjusting and positioning tool and further comprises

After the front door of the automobile is installed, before a fender is installed, a pre-matching adjusting and positioning tool for a front cover of the automobile body is placed on the automobile body, and a positioning pin is inserted into a positioning hole of a hinge of an engine cover;

rotating the second handle, turning the profiling block downwards to a working position, adjusting the position of the front door of the automobile according to the deviation between the profiling block and the front door of the automobile, and rotating the profiling block away from the front door of the automobile after the adjustment is finished;

the fender is preassembled on the existing mounting bracket, the first handle is rotated, the first locating rod and the second locating rod are turned downwards to a working position, the position of the fender is adjusted according to the deviation between the first locating rod and the second locating rod and the fender, the outer side wall of the fender is respectively abutted against the bottom of the first locating rod and the bottom of the second locating rod, then the fender is locked through bolts, and the front cover of the automobile body is taken down from the automobile body to be matched with the adjusting and locating tool in advance;

installing a positioning nut on a fixing bolt close to the rear of the engine cover, and pre-installing a fastening nut on the fixing bolt close to the front of the engine cover;

lifting the engine cover, sliding the preassembled fastening nut into a gap of the mounting hole in the front of the hinge, sliding the positioning nut above the hinge and embedding the positioning nut into the mounting hole in the rear of the hinge for positioning, lifting the head of the engine cover to be supported by a support rod, screwing the preassembled fastening nut by a torque gun, rotating the positioning nut, and finally mounting and screwing the fastening nut in the mounting hole in the rear of the hinge. So the assembly of bonnet, fender and car qianmen is convenient for.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a vehicle body front cover pre-matching adjusting and positioning tool provided by an embodiment of the invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention;

FIG. 5 is a side view of a clamping assembly provided by an embodiment of the present invention;

fig. 6 is a schematic structural view of the vehicle body front cover pre-matching adjusting and positioning tool provided by the embodiment of the invention installed behind a vehicle body;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is an enlarged view taken at D in FIG. 6;

fig. 9 is a schematic structural view of the vehicle body front cover pre-matching adjusting and positioning tool provided in the embodiment of the present invention installed behind a vehicle body;

FIG. 10 is an enlarged view at E in FIG. 9;

FIG. 11 is an enlarged view at F of FIG. 9;

FIG. 12 is a side view of the hood when installed according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a positioning nut according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of an automotive front door according to an embodiment of the present invention;

FIG. 15 is an enlarged view at G of FIG. 14;

FIG. 16 is a schematic structural view of an installed automobile front door according to an embodiment of the present invention;

fig. 17 is an enlarged view at H in fig. 16.

Icon: 1-a frame; 2-positioning pins; 3-a hood; 4-fenders; 5-automobile front door; 6-a hinge; 7-a first handle; 8-a first mounting frame; 9-a first positioning rod; 10-a second positioning rod; 11-a clamp; 12-a second handle; 13-a second mounting frame; 14-a shaped mass; 15-a third handle; 16-connecting blocks; 17-a first connecting column; 18-a second connecting column; 19-a connector; 20-a connecting rod; 21-a clamping jaw; 22-a positioning nut; 23-a fastening nut; 24-notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or vertical, but may be slightly inclined. Such as "horizontal" simply means that its orientation is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Referring to fig. 1 to 17, the embodiment provides a vehicle body front cover pre-matching adjusting and positioning tool, which includes a frame 1, wherein the frame 1 is provided with a positioning pin 2, a first positioning assembly for positioning a fender 4 along a vehicle body width direction, and a second positioning assembly for positioning a vehicle front door 5; the number of the positioning pins 2, the first positioning assemblies and the second positioning assemblies is two and the two positioning pins are respectively positioned on two sides of the frame 1.

Because the engine cover 3, the fender 4 and the front automobile door 5 are inconvenient to position and adjust and easy to deviate when being assembled, the front automobile door 5 is installed and then the fender 4 is installed in front when in actual use, as shown in figure 6, the front automobile cover pre-matching adjusting positioning tool is placed on the automobile body, the positioning pin 2 is inserted into the positioning hole of the hinge 6 of the engine cover 3, the relative position of the hinge 6 of the engine cover 3 and the front automobile cover pre-matching adjusting positioning tool is determined, the fender 4 is positioned and adjusted along the width direction of the automobile body through the first positioning assembly, the position of the front automobile door 5 is positioned and adjusted through the second positioning assembly, the engine cover 3 is installed on the hinge 6, and the engine cover 3 can be arranged on the hinge 6 by taking the front automobile body cover pre-matching adjusting positioning tool as a reference, so that the engine cover 3, The fender 4 and the front automobile door 5 are positioned to facilitate the assembly of the hood 3, the fender 4 and the front automobile door 5.

As shown in fig. 1 to 17, in some embodiments of the present invention, the second positioning assembly includes a second mounting seat provided on the frame 1, a second handle 12 rotatably provided on the second mounting seat, a second mounting frame 13 provided on the second handle 12, and a contour block 14 provided on the second mounting frame 13.

The working principle is as follows: when the position of the front door 5 of the automobile needs to be positioned and adjusted, a worker can rotate the second handle 12 by hand, as shown in fig. 6, the second handle 12 drives the second mounting frame 13 and the contour block 14 to rotate together, the contour block 14 rotates to a working position, namely, the contour block 14 is close to the position of the front door 5 of the automobile, at the moment, the deviation between the front door 5 of the automobile and the contour block 14 can be measured through a clearance ruler, a surface difference ruler and the like, then the front door 5 of the automobile is adjusted according to the deviation, the front door 5 of the automobile is fixed after the adjustment, then the second handle 12 is rotated to reset, as shown in fig. 9, at the moment, the second handle 12 drives the second mounting frame 13 and the contour block 14 to rotate together to be far away from the front door 5 of the automobile.

As shown in fig. 1-17, in some embodiments of the present invention, the second mounting seat is provided with a clamping member 11 for clamping the second handle 12.

According to the invention, by arranging the clamping piece 11, after the position of the front door 5 of the automobile is adjusted and the second handle 12 is rotated to reset, the second handle 12 can be rotated and clamped and fixed through the clamping piece 11, so that the second handle 12 is prevented from freely moving, and the whole second positioning assembly is conveniently fixed. It should be noted that the clamping member 11 of this embodiment is provided with a U-shaped slot, and the second handle 12 is embedded into the U-shaped slot to realize clamping, so that the second handle 12 can be rotated out conveniently.

As shown in fig. 1-17, in some embodiments of the present invention, the first positioning assembly includes a first mounting seat disposed on the frame 1, a first handle 7 rotatably disposed on the first mounting seat, a first mounting rack 8 disposed on the first handle 7, and a first positioning rod 9 and a second positioning rod 10 disposed on the first mounting rack 8; the first positioning rod 9 is arranged on the inward side of the first mounting rack 8, and the second positioning rod 10 is arranged on the outward side of the first mounting rack 8; the lowest part of the first positioning rod 9 is higher than the lowest part of the second positioning rod 10.

The working principle is as follows: when needs carry out positioning adjustment to fender 4, as shown in fig. 9, the staff can rotate first in command 7 with the hand, make first in command 7 drive first mounting bracket 8, first locating lever 9 and second locating lever 10 rotate together, make first locating lever 9 and second locating lever 10 rotate to the work position, because the lateral wall of fender 4 generally is slope setting, the lower of first locating lever 9 is higher than the lower of second locating lever 10, so the bottom of first locating lever 9 can carry out the butt location with fender 4 off-centre position, the bottom of second locating lever 10 can carry out the butt location with fender 4 off-centre position, so after first locating lever 9 and second locating lever 10 rotate to the work position, whether accessible fender 4 lateral wall simultaneously with the bottom butt of first locating lever 9 and second locating lever 10, if there is not the butt, adjust fender 4's position according to the deviation until fender 4 lateral wall simultaneously with first locating lever 9 and second locating lever 10 and first locating lever 9 and second locating lever 10, if there is not the butt, according to the deviation adjustment, fender 4's position The bottom butt of second locating lever 10 accomplishes fender 4's location this moment, can lock fender 4. Then the first handle 7 is rotated, so that the first handle 7 drives the first mounting frame 8, the first positioning rod 9 and the second positioning rod 10 to rotate together to be away from the fender 4.

In some embodiments of the invention, as shown in fig. 1-17, the first mounting base is provided with a clamping member 11 for clamping the first handle 7. According to the invention, the clamping piece 11 is arranged, so that the first handle 7 can be clamped and fixed conveniently through the clamping piece 11.

As shown in fig. 1-17, in some embodiments of the present invention, the frame 1 is provided with a clamping assembly for clamping with a vehicle body, the clamping assembly comprises a third mounting seat, a third handle 15, a connecting block 16, a first connecting column 17, a second connecting column 18, a zigzag connecting piece 19, a connecting rod 20 and a clamping jaw 21, the connecting block 16 is hinged with the third mounting seat and the third handle 15 respectively, one end of the first connecting column 17 is hinged with the third handle 15, and the other end of the first connecting column 17 is connected with one end of the connecting piece 19; one end of the second connecting column 18 is connected with the other end of the connecting piece 19, and the other end of the second connecting column 18 is hinged with one end of the connecting rod 20; the other end of the connecting rod 20 is hinged with one end of the clamping jaw 21; the other end of the clamping jaw 21 is a free end, and the clamping jaw 21 is hinged with the third mounting seat.

When installing frame 1, place frame 1 behind the automobile body, the accessible centre gripping subassembly carries out the centre gripping with the automobile body and fixes, makes automobile body protecgulum match adjustment location frock in advance fixed more stable with the automobile body, prevents that its skew from causing the error.

The clamping principle is as follows: during the centre gripping, can make between certain part embedding clamping jaw 21 and the third mount pad on the automobile body, the staff rotates third handle 15, third handle 15 pulling first spliced pole 17 moves up, first spliced pole 17 pulling connecting piece 19 moves up this moment, 19 pulling second spliced poles 18 move up of connecting piece, second spliced pole 18 pulling connecting rod 20 that moves up this moment, as shown in fig. 5, connecting rod 20 promotes clamping jaw 21 and rotates along the third mount pad and make certain part joint on the automobile body between clamping jaw 21 and the third mount pad this moment, accomplish the centre gripping operation.

As shown in fig. 1 to 17, an embodiment of the present invention further provides an installation process, including the vehicle body front cover pre-matching adjustment positioning tool, and further including

After the front door 5 of the automobile is installed and before the fender 4 is installed, a pre-matching adjusting and positioning tool for a front cover of the automobile body is placed on the automobile body, and the positioning pin 2 is inserted into a positioning hole of a hinge 6 of the engine cover 3;

rotating the second handle 12, downwards turning the contour block 14 to a working position, adjusting the position of the front door 5 of the automobile according to the deviation between the contour block 14 and the front door 5 of the automobile, and rotating the contour block 14 to be far away from the front door 5 of the automobile after the adjustment is finished;

pre-assembling the fender 4 on the existing mounting bracket, rotating the first handle 7, downwards turning the first positioning rod 9 and the second positioning rod 10 to a working position, adjusting the position of the fender 4 according to the deviation between the first positioning rod 9 and the second positioning rod 10 and the fender 4 respectively, enabling the outer side wall of the fender 4 to be abutted against the bottom of the first positioning rod 9 and the bottom of the second positioning rod 10 respectively, locking the fender 4 through bolts, and taking off a front cover of the vehicle body from the vehicle body to be pre-matched with an adjusting and positioning tool;

mounting a positioning nut 22 on a fixing bolt at the back of the engine hood 3, and pre-mounting a fastening nut 23 on the fixing bolt at the front of the engine hood 3; wherein the positioning nut 22 is configured as shown in fig. 13;

as shown in fig. 12, the hood 3 is lifted, the preassembled fastening nut is slid into the notch 24 of the mounting hole in the front of the hinge 6, the positioning nut 22 is slid over the hinge 6 and inserted into the mounting hole in the rear of the hinge 6 for positioning, the head of the hood 3 is lifted and supported by the stay, the preassembled fastening nut 23 is tightened by the torque gun, the positioning nut 22 is rotated out, and finally the fastening nut 23 is mounted in the mounting hole in the rear of the hinge 6 and tightened. This facilitates the assembly of the hood 3, fender 4 and front door 5 of the vehicle.

In summary, the embodiment of the invention provides a vehicle body front cover pre-matching adjusting and positioning tool, which comprises a frame 1, wherein the frame 1 is provided with a positioning pin 2, a first positioning assembly for positioning a fender 4 along the width direction of a vehicle body and a second positioning assembly for positioning a front door 5 of a vehicle; the number of the positioning pins 2, the first positioning assemblies and the second positioning assemblies is two and the two positioning pins are respectively positioned on two sides of the frame 1.

Because the engine cover 3, the fender 4 and the automobile front door 5 are inconvenient to position and adjust and easy to deviate when being assembled, the automobile front cover pre-matching adjusting and positioning tool is arranged, when in actual use, after the automobile front door 5 is installed, the fender 4 is installed, the automobile front cover pre-matching adjusting and positioning tool is placed on the automobile body, the positioning pin 2 is inserted into the positioning hole of the hinge 6 of the engine cover 3, the relative position of the hinge 6 of the engine cover 3 and the automobile front cover pre-matching adjusting and positioning tool is determined, so that the fender 4 is positioned and adjusted along the width direction of the automobile body through the first positioning assembly, the position of the automobile front door 5 is positioned and adjusted through the second positioning assembly, and then the engine cover 3 is installed on the hinge 6, so that the engine cover 3, the fender 4 and the automobile front door 5 can be positioned by taking the automobile front cover pre-matching adjusting and positioning tool as a reference, the assembly of the hood 3, fender 4 and front door 5 of the car is facilitated.

The embodiment of the invention also provides an installation process, which comprises the vehicle body front cover pre-matching adjusting and positioning tool and further comprises

After the front door 5 of the automobile is installed and before the fender 4 is installed, a pre-matching adjusting and positioning tool for a front cover of the automobile body is placed on the automobile body, and the positioning pin 2 is inserted into a positioning hole of a hinge 6 of the engine cover 3;

rotating the second handle 12, downwards turning the contour block 14 to a working position, adjusting the position of the front door 5 of the automobile according to the deviation between the contour block 14 and the front door 5 of the automobile, and rotating the contour block 14 to be far away from the front door 5 of the automobile after the adjustment is finished;

pre-assembling the fender 4 on the existing mounting bracket, rotating the first handle 7, downwards turning the first positioning rod 9 and the second positioning rod 10 to a working position, adjusting the position of the fender 4 according to the deviation between the first positioning rod 9 and the second positioning rod 10 and the fender 4 respectively, enabling the outer side wall of the fender 4 to be abutted against the bottom of the first positioning rod 9 and the bottom of the second positioning rod 10 respectively, locking the fender 4 through bolts, and taking off a front cover of the vehicle body from the vehicle body to be pre-matched with an adjusting and positioning tool;

mounting a positioning nut 22 on a fixing bolt at the back of the engine hood 3, and pre-mounting a fastening nut 23 on the fixing bolt at the front of the engine hood 3;

the engine cover 3 is lifted, the preassembled fastening nuts are slid into the notches 24 of the mounting hole in the front of the hinge 6, the positioning nuts 22 are slid above the hinge 6 and embedded into the mounting hole in the rear of the hinge 6 for positioning, the head of the engine cover 3 is lifted and supported by the supporting rods, the preassembled fastening nuts 23 are screwed by the torque gun, the positioning nuts 22 are rotated out, and finally the fastening nuts 23 are mounted and screwed in the mounting hole in the rear of the hinge 6. This facilitates the assembly of the hood 3, fender 4 and front door 5 of the vehicle.

While the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.