Mounting tool for mounting front fender of automobile and mounting method

Abstract

The invention relates to the technical field of automobile assembly, in particular to a mounting tool for mounting an automobile front fender and a mounting method. The harness frame is provided with a guiding and positioning structure used for guiding and positioning descending of the harness frame, a vehicle body positioning structure used for positioning the harness frame on a vehicle body, a fender positioning structure used for positioning a front fender on the vehicle body, and an adjusting structure used for adjusting a gap and a surface difference between a front door and the front fender. Through cooperative use of the guide positioning structure, the vehicle body positioning structure, the fender positioning structure and the adjusting structure, in the process of assembling the front fender, the assembling quality and the assembling efficiency of the front fender are guaranteed, and overall use is more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of automobile assembly, and in particular to a fixture for installing a front fender of an automobile and an installation method thereof. Background Art

[0002] The rapid development of automobile industry and technology has made automobiles an indispensable means of transportation in people's daily lives. Among them, the perceived quality of automobile appearance has attracted more and more attention from users. The front fender of an automobile is a covering part of the front body of the automobile. It is installed on the outside of the body above the front wheel. It is an important part related to the perceived quality of the appearance of the whole vehicle. In DTS, the front fender and multiple surrounding mating parts such as front doors, hood, front bumper, headlights and side panels have matching requirements in terms of clearance and surface difference.

[0003] like Figure 1 As shown, there is a car body, which includes a car body 8 placed on a production line and a front fender 9 arranged on the car body 8. The car body 8 is provided with process holes reserved in the production process, such as: a first through hole 81 and a second through hole 82 located on the front wheel cover plate, and a third through hole 83 located at the front end of the car body 8, etc. A connecting column 84 is also formed at the end of the front longitudinal beam; a fourth through hole 91 and a fifth through hole 92 are opened on the front fender 9.

[0004] During the assembly process of the above-mentioned vehicle body 8, the front fender 9 is usually installed in the following manner: the vehicle body 8 moves to the designated workstation on the production line and stops, and then a staff member pre-places a front fender 9 at the corresponding position on one side of the vehicle body 8, and then manually calibrates and positions it. After the positioning is completed, the bolts are manually installed one by one in the fourth through hole 91 and the fifth through hole 92 on the front fender 9, so as to fix the front fender 9 on one side, and then the above operation is repeated to install the front fender 9 on the other side.

[0005] However, in the actual assembly process, due to the large randomness of the manual installation method, the matching accuracy requirements of the inspection gap and surface difference between the front fender 9 and the front door cannot be guaranteed. At the same time, since the front fenders 9 on both sides are assembled separately, it is easy for the front fenders 9 on both sides to be asymmetrical, resulting in the front fenders 9 after installation not meeting the assembly standards and requiring rework and adjustment, which affects the overall assembly quality and efficiency. Summary of the invention

[0006] In order to solve the problem that the front fenders on both sides are easily asymmetric and the quality of the assembled front fenders does not meet the standards by manually installing the front fenders on both sides separately in the prior art, the present application provides a fixture and an installation method for the front fenders of an automobile.

[0007] The present application provides a vehicle front fender installation tool and installation method, which adopts the following technical solutions: A fixture for installing a front fender of an automobile comprises a fixture frame hoisted above a production line, wherein the fixture frame is provided with a guide positioning structure for guiding and positioning the fixture frame when it descends, a body positioning structure for positioning the fixture frame on the body, a fender positioning structure for positioning the front fender on the body, and an adjustment structure for adjusting the gap and flushness between a front door and the front fender.

[0008] By adopting the above technical solution, when in use, the guide positioning structure is first used to guide the descent of the mounting frame, and the mounting frame is initially positioned on the vehicle body with the assistance of the staff, and then the relative position between the mounting frame and the vehicle body is secondary positioned by the vehicle body positioning structure to further ensure the accuracy of the mounting frame position, and then the two fenders are positioned on the vehicle body by the fender positioning structure, while ensuring the symmetry of the fender installation positions on both sides, and finally the gap and surface difference between the front door and the front fender are adjusted by the adjustment structure, so as to ensure that the quality of the front fender after installation is up to standard, and the overall use is simple and convenient, thereby reducing the steps of subsequent rework and readjustment, thereby improving assembly efficiency.

[0009] Preferably, the guide and positioning structure includes a guide column and a positioning block fixed on the harness frame, two guide columns and two positioning blocks are provided, and the two guide columns and positioning blocks are arranged one by one at both ends of the harness frame in the length direction, the guide column is plugged into the first through hole, and a positioning groove is provided at one end of the positioning block away from the harness frame, and the positioning groove is embedded in the connecting column.

[0010] By adopting the above technical solution, when in use, under the action of the aerial hoist, the harness frame continues to descend, and then with the assistance of the staff, the guide column is inserted into the first through hole, so that the guide column is limited by the first through hole, thereby forming a limit on the horizontal direction of the harness frame, and then the harness frame continues to move downward until the bottom wall of the positioning groove abuts against the side wall of the connecting column, and the harness frame can be initially positioned in the vertical direction through the connecting column, thereby achieving the initial positioning of the harness frame on the vehicle body.

[0011] Preferably, the vehicle body positioning structure comprises a vertical positioning structure and a transverse positioning structure arranged on the harness frame, and two groups of the transverse positioning structures are provided, and the two groups of the transverse positioning structures are symmetrically arranged at both ends of the length direction of the harness frame.

[0012] By adopting the above technical solution, when in use, the mounting frame is secondarily positioned on the vehicle body in the vertical direction by setting a vertical positioning structure, and then the mounting frame is secondarily positioned on the vehicle body in the horizontal direction by setting a transverse positioning structure, so as to ensure the accuracy of the position of the mounting frame fixed on the vehicle body, thereby ensuring the symmetry and accuracy of the subsequent installation of the front fenders on both sides of the vehicle body.

[0013] Preferably, the vertical positioning structure includes a first abutment block fixed on the harness frame, a second abutment block rotating on the harness frame, and a first driving assembly for driving the second abutment block to rotate to abut against the outer wall of the vehicle body, a plurality of the first abutment blocks are provided, and the plurality of the first abutment blocks are arranged at intervals on the harness frame, and the second abutment block and the plurality of the first abutment blocks cooperate to clamp and fix the outer wall of the vehicle body.

[0014] By adopting the above technical solution, when in use, under the action of the sling, the mounting frame continuously descends, and the first abutment block and the second abutment block also descend accordingly. When the bottom wall of the positioning groove abuts against the side wall of the connecting column, the first abutment block also abuts against the upper surface of the vehicle body. Thereafter, the piston rod of the first driving assembly can be driven to extend, driving the second abutment block to rotate until it abuts against the lower surface of the vehicle body. In cooperation with the first abutment block, a clamping and fixing of the outer wall of the vehicle body can be formed, thereby realizing the positioning of the mounting frame in the vertical direction.

[0015] Preferably, the lateral positioning structure includes a first positioning pin slidably disposed on the harness frame, a second driving assembly for driving the first positioning pin to slide and insert into the second through hole, a first sliding seat slidably disposed on the harness frame, a second positioning pin disposed on the first sliding seat, and a first driving cylinder for driving the first sliding seat to slide, the second driving assembly and the first driving cylinder are both mounted on the harness frame, and the second positioning pin is plug-fitted with a third through hole on the vehicle body.

[0016] By adopting the above technical solution, when in use, after the harness frame is initially positioned on the vehicle body, the first positioning pin can be driven to insert into the second through hole by the second driving component, and the first sliding seat can be driven to slide close to the vehicle body by the first driving cylinder until the second positioning pin is inserted into the third through hole, thereby forming accurate positioning of the harness frame in the horizontal direction, and the overall use is simple and convenient.

[0017] Preferably, the fender positioning structure includes a clamping block fixed to the fixture frame, a first clamping assembly and a second clamping assembly arranged on the fixture frame, a third positioning pin slidably arranged on the fixture frame, and a third driving assembly for driving the third positioning pin to move to be inserted into a fourth through hole, the clamping block abuts against the outer wall of the front fender, the first clamping assembly and the second clamping assembly are respectively located at both ends of the length direction of the front fender, and the first clamping assembly and the second clamping assembly are both used to clamp and fix the front fender, and the third driving assembly is installed on the fixture frame.

[0018] By adopting the above technical solution, when in use, after the mounting frame is completely positioned on the mounting frame, the front fender pre-installed on the vehicle body can be clamped and fixed by the cooperation of the first clamping assembly and the second clamping assembly, and then the staff controls the third driving assembly to drive the third positioning pin to be inserted into the fourth through hole, thereby completing the precise positioning of the front fender on the vehicle body, thereby ensuring the accuracy of the subsequent installation position of the front fender.

[0019] Preferably, the first clamping assembly includes a second driving cylinder installed on the first sliding seat, a third abutment block fixed to the end of the piston rod of the second driving cylinder, a third driving cylinder installed on the equipment frame, a fourth abutment block fixed to the end of the piston rod of the third driving cylinder, and a fourth positioning pin fixed to the fourth abutment block, the third abutment block and the fourth abutment block cooperate to clamp and fix the front fender, and the fourth positioning pin is plug-fitted into the fifth through hole.

[0020] By adopting the above technical solution, when in use, the staff controls the piston rod of the second driving cylinder to extend, thereby driving the third abutment block to abut against one side surface of the front fender, and at the same time controls the piston rod of the third driving cylinder to extend, thereby driving the fourth abutment block to abut against the other side surface of the front fender, and inserts the fourth positioning pin into the front fender, thereby forming a precise positioning of the front fender, thereby ensuring the stability and accuracy of the subsequent front fender assembly process.

[0021] Preferably, the second clamping assembly includes a second sliding seat sliding on the fixture frame, a fourth driving cylinder installed on the fixture frame for driving the second sliding seat to slide, a fifth abutment block fixed on the second sliding seat, and a first vacuum suction cup installed on the second sliding seat, and the fifth abutment block and the first vacuum suction cup are both in abutment with the side wall of the front fender.

[0022] By adopting the above technical solution, when in use, the staff controls the fourth driving cylinder piston rod to extend, thereby driving the second sliding seat to slide close to the front fender until the fifth abutment block abuts against the outer surface of one side of the front fender, and then the staff controls the first vacuum suction cup to perform vacuum treatment, so that the front fender is adsorbed to one side of the fifth abutment block through the first vacuum suction cup, and the front fender can be clamped and fixed in cooperation with the fifth abutment block, and the overall use is simple and convenient.

[0023] Preferably, the adjustment structure includes a gap adjustment component arranged on the second sliding seat for adjusting the gap between the front fender and the front door, a hand seat arranged on the equipment frame, a positioning component arranged on the hand seat for positioning the hand seat on the vehicle body, a gap calibration component arranged on the hand seat for adjusting the gap between the front fender and the front door to be consistent in vertical direction, and a surface difference adjustment component arranged on the hand seat for adjusting the surface difference between the front door and the front fender.

[0024] By adopting the above technical solution, when in use, after the positioning of the front fender is completed, the staff can first control the gap adjustment component to adjust the upper part of the gap between the front fender and the front door to the standard gap, and then the staff can take the hand-held seat and move it to the bottom of the gap between the front fender and the front door, and adjust the width of the gap below the front fender and the front door through the gap calibration component to ensure that the upper gap and the lower gap between the front fender and the front door are consistent, and finally adjust the surface difference between the front fender and the front door through the surface difference adjustment component to ensure the flatness of the appearance of the front fender after assembly, thereby ensuring the assembly quality of the front fender.

[0025] A method for installing a front fender of an automobile comprises the following steps: S1. The staff pre-installs the front fender on the vehicle body; S2. Lower the whole equipment to the position of the vehicle body through the lifting device, adjust the position of the equipment frame with the assistance of the staff, and preliminarily position the equipment frame on the vehicle body under the action of the guiding and positioning structure; S3, adjust the vehicle body positioning structure to reposition the fixture frame and lock it on the vehicle body; S4. adjusting the position of the front fender through the fender positioning structure, thereby positioning the front fender relative to the fixture frame; S5. Adjust the gap and flushness between the front fender and the front door to meet the standard through the gap adjustment component, the gap calibration component and the flushness adjustment component; S6. After all adjustments are completed, the staff will use a torque gun to tighten the bolts to complete the installation of the front fender on the vehicle body; S7. After the installation is completed, the corresponding fender positioning structure and the body positioning structure are opened, and the entire fixture is lifted by the hoist. When the fixture frame leaves the body, the body can be moved to the next process along the production line.

[0026] By adopting the above technical solution, when in use, on the one hand, the convenience and accuracy of positioning the fixture frame on the vehicle body are improved, thereby ensuring the accuracy of subsequent installation of the front fenders; on the other hand, the symmetry of the front fenders on both sides of the vehicle body after installation is ensured, thereby ensuring the perceived appearance quality of the front fenders after assembly, reducing the steps of subsequent rework and adjustment, thereby improving the assembly efficiency of the front fenders, and making the overall use more convenient.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the coordinated use of the guide positioning structure and the body positioning structure, the fixture frame is accurately and efficiently positioned on the vehicle body. Then, through the coordinated use of the fender positioning structure and the adjustment structure, the accuracy of the subsequent front fender installation position and the overall assembly quality are ensured, thereby improving the quality and efficiency of the front fender assembly; 2. Through the coordinated use of the first abutment block, the second abutment block and the first driving assembly, the mounting frame is clamped and fixed in the vertical direction, thereby ensuring the stability of the mounting frame after positioning; 3. Through the coordinated use of the second driving cylinder, the third abutment block, the third driving cylinder, the fourth abutment block, the fourth driving cylinder, the fifth abutment block and the first vacuum suction cup, the front fender is clamped and positioned, thereby ensuring the stability of the positioning of the front fender during the subsequent assembly process, thereby ensuring the quality of the front fender assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an axonometric schematic diagram mainly showing the structure of the vehicle body and the front fender in the background technology; Figure 2 This is an axonometric diagram of the first embodiment of the present application mainly showing the use of the harness frame; Figure 3 It is an axonometric diagram mainly showing the overall structure of the mounting frame in the first embodiment of the present application; Figure 4 This is an axonometric diagram mainly showing the guiding and positioning structure in the first embodiment of the present application; Figure 5 This is an axonometric diagram mainly showing the vehicle body positioning structure in the first embodiment of the present application; Figure 6 It is an axonometric diagram mainly showing the structure of the first driving assembly in the first embodiment of the present application; Figure 7It is a schematic diagram mainly showing the internal structure of the first driving component in the first embodiment of the present application; Figure 8 This is an axonometric diagram mainly showing the lateral positioning structure in the first embodiment of the present application; Fig. 9 It is an axonometric schematic diagram mainly showing the fender positioning structure in the first embodiment of the present application; Fig.10 It is an axonometric schematic diagram mainly showing the structure of the first clamping assembly in the first embodiment of the present application; Fig.11 It is an axonometric schematic diagram mainly showing the structure of the second clamping assembly in the first embodiment of the present application; Fig.12 It is an axonometric diagram mainly showing the adjustment structure in the first embodiment of the present application; Fig.13 It is an axonometric schematic diagram mainly showing the structure of the gap adjustment assembly in the first embodiment of the present application; Fig.14 It is an axonometric diagram mainly showing the structure of the positioning assembly in the first embodiment of the present application; Fig.15 It is an axonometric schematic diagram mainly showing the structure of the gap calibration component in the first embodiment of the present application; Fig.16 It is a forward schematic diagram mainly showing the overall structure in the second embodiment of the present application; Fig.17 It is an axonometric diagram mainly showing the frame structure of the equipment in the second embodiment of the present application; Fig.18 It is a schematic diagram mainly showing the linkage structure in the second embodiment of the present application; Fig.19 It is an exploded view mainly showing the linkage shaft structure in the second embodiment of the present application.

[0029] Figure numerals: 1, fixture frame; 11, left frame; 111, first frame; 112, second frame; 12, right frame; 121, third frame; 122, fourth frame; 123, first plug rod; 124, second plug rod; 125, third plug rod; 126, fourth plug rod; 2, guide positioning structure; 21, guide column; 22, positioning block; 23, positioning groove; 3, vehicle body positioning structure; 31, vertical positioning structure; 311, first abutment block; 312, second abutment block; 313, first driving assembly; 3131, fifth driving cylinder; 3132, first rack; 3133, first gear; 3134, rotating shaft; 314, First limit block; 315, second limit block; 32, transverse positioning structure; 321, first positioning pin; 322, second drive assembly; 3221, base; 3222, sixth drive cylinder; 3223, linkage rod; 3224, rocker; 323, first sliding seat; 324, second positioning pin; 325, first drive cylinder; 4, fender positioning structure; 41, clamping block; 42, first clamping assembly; 421, second drive cylinder; 422, third abutting block; 423, third drive cylinder; 424, fourth abutting block; 425, fourth positioning pin; 43, second clamping assembly; 431, second sliding seat; 432, fourth drive cylinder Cylinder; 433, fifth abutment block; 434, first vacuum suction cup; 44, third positioning pin; 45, third driving assembly; 5, adjustment structure; 51, gap adjustment assembly; 511, fixed seat; 512, sixth abutment block; 513, second vacuum suction cup; 514, first adjustment block; 515, tapered rod; 516, first adjustment pad; 52, hand-held seat; 53, positioning assembly; 531, fifth positioning pin; 532, seventh abutment block; 533, eighth abutment block; 54, gap calibration assembly; 541, second adjustment block; 542, second adjustment pad; 543, limit plate; 55, face difference adjustment assembly; 551, ninth abutment block; 55 2. First abutting surface; 553. Second abutting surface; 554. Magnet; 6. Toolbox; 7. Linkage structure; 71. Second gear; 72. Third gear; 73. Linkage shaft; 731. Upper shaft body; 732. Lower shaft body; 733. Upper clamping column; 7331. First clamping tooth; 734. Lower clamping column; 7341. Second clamping tooth; 735. Upper spring; 736. Lower spring; 737. Upper connecting sleeve; 738. Lower connecting sleeve; 74. Second rack; 75. Third rack; 8. Vehicle body; 81. First through hole; 82. Second through hole; 83. Third through hole; 84. Connecting column; 9. Front fender; 91. Fourth through hole; 92. Fifth through hole. DETAILED DESCRIPTION

[0030] The following is combined with Figure 2 -Attached Fig.19 This application is described in further detail.

[0031] The embodiment of the present application discloses a fixture for installing a front fender of an automobile and an installation method.

[0032] Embodiment 1: Reference Figure 2 and Figure 3 A fixture for installing a front fender of an automobile comprises a fixture frame 1 placed horizontally, and a guide positioning structure 2, a vehicle body positioning structure 3, a fender positioning structure 4 and an adjustment structure 5 installed on the fixture frame 1, wherein the fixture frame 1 is hoisted above a production line as a whole by an aerial hoist; when in use, a vehicle body 8 is placed on the production line and moves with the movement of the production line, when the vehicle body 8 moves to the bottom of the fixture frame 1, the production line is suspended, and then the aerial hoist can be controlled to lower the fixture frame 1.

[0033] Reference Figure 2 and Figure 3 When the mounting frame 1 descends to near the vehicle body 8, the staff assists the descending direction of the mounting frame 1 so that the guide positioning structure 2 is aligned with the vehicle body 8. After that, the descending of the mounting frame 1 can be guided and positioned in the vertical direction by the guide positioning structure 2. When the mounting frame 1 is positioned on the vehicle body 8, the staff controls the vehicle body positioning structure 3 to fix the mounting frame 1 on the vehicle body 8 to ensure that there is no relative movement between the mounting frame 1 and the vehicle body 8 during subsequent operations. Then, the installation position of the fender pre-installed on the vehicle body 8 is adjusted and aligned by the fender positioning structure 4 to ensure the installation quality and symmetry of the fenders on both sides of the vehicle body 8. Finally, the clearance and surface difference between the front fender 9 and the front door are adjusted by the adjustment structure 5 to ensure that the appearance perception quality of the vehicle body 8 meets the standard after the front fender 9 is installed.

[0034] Reference Figure 3 and Figure 4 The guide and positioning structure 2 includes a guide column 21 and a positioning block 22. The top of the guide column 21 is fixed to the tool frame 1 by bolts, and the bottom of the guide column 21 is vertically downwardly arranged. The guide column 21 as a whole is plugged into the first through hole 81. One end of the positioning block 22 is fixed to the tool frame 1 by bolts. A positioning groove 23 is provided at the other end of the positioning block 22. The positioning groove 23 is embedded with the connecting column 84. There are two guide columns 21 and two positioning blocks 22, and the two guide columns 21 are symmetrically arranged at both ends of the length direction of the tool frame 1. The positioning blocks 22 are arranged one by one with the guide columns 21.

[0035] Reference Figure 3 and Figure 4When in use, the harness frame 1 is in the process of being lowered, and the staff assists in adjusting the lowering direction of the harness frame 1, so that the guide column 21 is aligned with the first through hole 81 and inserted into the first through hole 81. Then, under the guiding and limiting effect of the first through hole 81 on the guide column 21, the harness frame 1 continues to descend until the connecting column 84 is embedded in the positioning groove 23. When the outer wall of the connecting column 84 abuts against the bottom wall of the positioning groove 23, the aerial hoist can be controlled to stop running, thereby completing the initial positioning of the harness frame 1 on the vehicle body 8. Subsequently, the staff can control the vehicle body positioning structure 3 to perform secondary positioning on the harness frame 1.

[0036] Reference Figure 3 and Figure 5 The vehicle body positioning structure 3 is divided into two parts: a vertical positioning structure 31 and a lateral positioning structure 32. In the present embodiment, two groups of lateral positioning structures 32 are provided, and the two groups of lateral positioning structures 32 are symmetrically arranged at both ends of the length direction of the harness frame 1. Three groups of vertical positioning structures 31 are provided, and one group of vertical positioning structures 31 is arranged at the middle part of the length direction of the harness frame 1, and the other two groups of vertical positioning structures 31 are arranged one by one with the lateral positioning structures 32. When in use, the harness frame 1 can be positioned on the vehicle body 8 for the second time by using the two groups of lateral positioning structures 32 and the three groups of vertical positioning structures 31 in coordination, so as to avoid displacement of the harness frame 1 during subsequent operations.

[0037] Reference Figure 5 and Figure 6 The vertical positioning structure 31 is composed of a first abutment block 311, a second abutment block 312 and a first driving assembly 313, wherein a plurality of first abutment blocks 311 are provided, and the plurality of first abutment blocks 311 are spaced apart on the harness frame 1, one end of each first abutment block 311 is fixed to the harness frame 1 by bolts, and the other end of the first abutment block 311 forms an abutment fit with the outer wall of the vehicle body 8. In the present embodiment, two first abutment blocks 311 are preferably provided, and the two first abutment blocks 311 are symmetrically arranged at both ends of the length direction of the harness frame 1, and the second abutment block 312 is located between the two first abutment blocks 311. The first driving assembly 313 is installed on the harness frame 1, and the first driving assembly 313 is used to drive the second abutment block 312 to rotate until it abuts against the outer wall of the vehicle body 8.

[0038] Reference Figure 6 and Figure 7The first driving assembly 313 is composed of a fifth driving cylinder 3131, a first rack 3132, a first gear 3133 and a rotating shaft 3134, wherein the cylinder body of the fifth driving cylinder 3131 is fixed to the tool frame 1 by bolts, the first rack 3132 is fixed to the piston rod of the fifth driving cylinder 3131, the first gear 3133 rotates on the tool frame 1, and the first gear 3133 and the first rack 3132 are meshed with each other, and the rotating shaft 3134 is meshed with the first gear 3133. 3, one end of the second abutting block 312 is fixed on the rotating shaft 3134 by bolts, and the other end of the second abutting block 312 is used to abut the vehicle body 8; in addition, a first limiting block 314 is fixed on the mounting frame 1, and a second limiting block 315 is fixed on the side wall of the second abutting block 312. When the second abutting block 312 rotates, the second limiting block 315 rotates accordingly, until the second limiting block 315 abuts against the first limiting block 314, and the second abutting block 312 reaches the maximum rotation angle.

[0039] Reference Figure 5 and Figure 8 The lateral positioning structure 32 is composed of a first positioning pin 321, a second driving assembly 322, a first sliding seat 323, a second positioning pin 324 and a first driving cylinder 325. The first positioning pin 321 is slidably arranged on the tool frame 1 along the vertical direction. The second driving assembly 322 is installed on the tool frame 1. The second driving assembly 322 is used to drive the first positioning pin 321 to slide. The first sliding seat 323 slides on the tool frame 1 along the width direction of the tool frame 1. The second positioning pin 324 is fixed to the first sliding seat 323 by bolts. In this embodiment, two second positioning pins 324 are provided, and the two second positioning pins 324 are spaced apart in the vertical direction. The first driving cylinder 325 is installed on the tool frame 1, and the piston rod of the first driving cylinder 325 is fixedly connected to the first sliding seat 323 by bolts.

[0040] Reference Figure 5 and Figure 8 The second driving assembly 322 is composed of a base 3221, a sixth driving cylinder 3222, a linkage rod 3223 and a rocker 3224, wherein the cylinder body of the sixth driving cylinder 3222 is fixedly installed on the equipment frame 1, the base 3221 is fixed to the cylinder body end of the sixth driving cylinder 3222 by bolts, and one end of the piston rod of the sixth driving cylinder 3222 is fixedly connected to the first positioning pin 321, and the other end of the piston rod of the sixth driving cylinder 3222 passes through the cylinder body end and the base 3221 and is coaxially fixedly connected to one end of the linkage rod 3223, the other end of the linkage shaft 73 is hinged to the rocker 3224, and one end of the rocker 3224 is rotatably connected to the base 3221.

[0041] Reference Figure 5 and Figure 8During use, when the alignment accuracy between the first locating pin 321 and the second through hole 82 is low, the staff can manually drive the linkage rod 3223 to move by turning the rocker 3224, thereby driving the piston rod of the sixth drive cylinder 3222 to slide, thereby driving the first locating pin 321 to be inserted into the second through hole 82. When the alignment accuracy between the first locating pin 321 and the second through hole 82 is high, the first locating pin 321 can be pneumatically driven to be inserted into the second through hole 82 by ventilating the sixth drive cylinder 3222. The overall use is simple and convenient.

[0042] Reference Figure 5 and Figure 8 When the harness frame 1 descends until the outer wall of the connecting column 84 abuts against the bottom wall of the positioning groove 23, the first abutting block 311 also abuts against the upper surface of the vehicle body 8, and then the first driving component 313 drives the second abutting block 312 to rotate until it abuts against the lower surface of the vehicle body 8, thereby achieving the positioning of the harness frame 1 on the vehicle body 8 in the vertical direction through the cooperation of the first abutting block 311 and the second abutting block 312. At the same time, the first positioning pin 321 is driven to move and insert into the second through hole 82 by the second driving component 322, and the first sliding seat 323 is driven to slide by the first driving cylinder 325, thereby driving the second positioning pin 324 to insert into the third through hole 83, thereby achieving the positioning of the harness frame 1 on the vehicle body 8 in the horizontal direction, and then achieving the locking and fixation between the harness frame 1 and the vehicle body 8.

[0043] Reference Figure 3 and Fig. 9 The fender positioning structure 4 is composed of a clamping block 41, a first clamping assembly 42, a second clamping assembly 43, a third positioning pin 44 and a third driving assembly 45, wherein one end of the clamping block 41 is fixed to the fixture frame 1 by bolts, and the other end of the clamping block 41 is abutted against the top end of the outer wall of the front fender 9. The first clamping assembly 42 and the second clamping assembly 43 are installed on the fixture frame 1 at intervals along the length direction of the front fender 9. The first clamping assembly 42 and the second clamping assembly 43 are used to clamp and fix the bottom end of the outer wall of the front fender 9. The third positioning pin 44 is slidably set on the fixture frame 1 along the vertical direction. The third driving assembly 45 is used to drive the third positioning pin 44 to slide and insert into the fourth through hole 91. In this embodiment, the structure, installation method and use method of the third driving assembly 45 are the same as those of the second driving assembly 322.

[0044] Reference Figure 3 and Fig. 9When in use, after the harness frame 1 is fixed on the vehicle body 8, the top end of the front fender 9 pre-installed on the vehicle body 8 can be pressed against the vehicle body 8 by the pressing block 41, and then the bottom end of the front fender 9 is clamped and fixed by the first clamping assembly 42 and the second clamping assembly 43, and finally the third positioning pin 44 is driven by the third driving assembly 45 to be inserted into the fourth through hole 91, thereby completing the precise locking of the front fender 9.

[0045] Reference Fig. 9 and Fig.10 The first clamping assembly 42 is composed of a second driving cylinder 421, a third abutment block 422, a third driving cylinder 423, a fourth abutment block 424 and a fourth positioning pin 425, wherein the second driving cylinder 421 is fixed to the first sliding seat 323 by bolts, one end of the third abutment block 422 is fixed to the end of the piston rod of the second driving cylinder 421, the other end of the third abutment block 422 faces the inner wall of the front fender 9 and abuts with the inner wall of the front fender 9, the cylinder body of the third driving cylinder 423 is installed on the fixture frame 1 by bolts, one end of the fourth abutment block 424 is fixedly connected to the piston rod of the third driving cylinder 423 by bolts, the other end of the fourth abutment block 424 faces the outer wall of the front fender 9 and abuts with the outer wall of the front fender 9, the fourth positioning pin 425 is fixed to the side wall of the fourth abutment block 424 by bolts, and the fourth positioning pin 425 is plug-fitted with the fifth through hole 92.

[0046] Reference Fig. 9 and Fig.10 When in use, after the first sliding seat 323 moves to the inner side of the front fender 9, the staff can control the piston rod of the second driving cylinder 421 to extend, so as to drive the third abutment block 422 to abut against the inner wall surface of the front fender 9, and then control the piston rod of the third driving cylinder 423 to extend, so as to drive the fourth abutment block 424 to abut against the outer wall surface of the front fender 9, and at the same time, the fourth positioning pin 425 is inserted into the fifth through hole 92, so as to clamp and position the front fender 9.

[0047] Reference Fig. 9 and Fig.11 The second clamping assembly 43 is composed of a second sliding seat 431, a fourth driving cylinder 432, a fifth abutment block 433 and a first vacuum suction cup 434. The second sliding seat 431 is slidably mounted on the end of the mounting frame 1 along the length direction of the mounting frame 1. The cylinder body of the fourth driving cylinder 432 is fixed to the mounting frame 1 by bolts. The piston rod of the fourth driving cylinder 432 is fixedly connected to the second sliding seat 431 by bolts. The fifth abutment block 433 and the first vacuum suction cup 434 are both fixed to the second sliding seat 431 by bolts, and the first vacuum suction cup 434 is located between the fifth abutment block 433.

[0048] Reference Fig. 9 and Fig.11When in use, the staff controls the piston rod of the fourth driving cylinder 432 to extend, thereby driving the second sliding seat 431 to approach the front fender 9 until the fifth abutment block 433 abuts against the front fender 9. At this time, the end of the first vacuum suction cup 434 is attached to the front fender 9, and then the first vacuum suction cup 434 can be evacuated to make the first vacuum suction cup 434 adsorbed on the front fender 9, so that the adsorption force of the first vacuum suction cup 434 on the front fender 9 is coordinated with the abutment force of the fifth abutment block 433 on the front fender 9, so as to clamp the front fender 9.

[0049] Reference Fig. 9 and Fig.11 The second clamping assembly 43 uses the first vacuum suction cup 434 and the fifth abutment block 433 at the same side of the front fender 9 corresponding to the front fender 9 because the inner wall of the corresponding front fender 9 is equipped with vehicle body 8 accessories and lacks sufficient space for clamping from the inner wall. Therefore, the first vacuum suction cup 434 is used to adsorb the fifth abutment block 433 to abut to form clamping, thereby fixing the front fender 9 and making it more convenient to use.

[0050] Reference Figure 3 and Fig.12 The adjustment structure 5 includes five parts: a gap adjustment component 51, a hand-held seat 52, a positioning component 53, a gap calibration component 54 and a face difference adjustment component 55, wherein the gap adjustment component 51 is arranged on the second sliding seat 431, the hand-held seat 52 is placed on the fixture frame 1, and the positioning component 53, the gap calibration component 54 and the face difference adjustment component 55 are all arranged on the hand-held seat 52; when in use, after the front fender 9 is positioned on the vehicle body 8, the staff can first control the gap adjustment component 51 to adjust the upper part of the gap between the front fender 9 and the front door to form a reference, and then manually move the hand-held seat 52 to the specified position, and through the coordinated use of the positioning component 53 and the gap calibration component 54, the lower part of the gap between the front fender 9 and the front door is adjusted to be consistent with the upper part of the gap, and finally the face difference between the front fender 9 and the front door is adjusted by the face difference adjustment component 55 to ensure the installation quality of the front fender 9.

[0051] Reference Fig.12 and Fig.13The gap adjustment assembly 51 is composed of a fixed seat 511 fixed on the second sliding seat 431, a sixth abutting block 512 fixed on the fixed seat 511, a second vacuum suction cup 513 installed on the fixed seat 511, a first adjustment block 514 installed on the fixed seat 511, a tapered rod 515 fixed at the end of the first adjustment block 514, and a plurality of first adjustment pads 516 arranged between the first adjustment block 514 and the fixed seat 511, wherein the sixth abutting block 512 and the second vacuum suction cup 513 are both abutted against the outer wall of the front fender 9, the tapered rod 515 forms a plug-in fit with the gap between the front fender 9 and the front door, and the first adjustment pad 516 is fixedly connected to the first adjustment hole by bolts, that is, one end of the bolt passes through the first adjustment block 514 and the plurality of first adjustment pads 516 and is threadedly connected to the fixed seat 511.

[0052] Reference Fig.12 and Fig.13 When in use, the second vacuum suction cup 513 is vacuumed so that the second vacuum suction cup 513 is adsorbed on the front fender 9, thereby the fixing seat 511 is fixed by the cooperation of the second vacuum suction cup 513 and the sixth abutment block 512, and then the tapered rod 515 is inserted into the gap between the front fender 9 and the front door, and the number of the first adjustment pads 516 is adjusted to adjust the insertion depth of the tapered rod 515, so that the front fender 9 and the front door are abutted by the inclined surface of the side wall of the tapered rod 515, so as to determine that the gap between the front fender 9 and the front door meets the standard.

[0053] Reference Fig.12 and Fig.14 The positioning assembly 53 includes a fifth positioning pin 531, a seventh abutment block 532 and an eighth abutment block 533 fixed to the hand-held seat 52 by bolts. In the present embodiment, two fifth positioning pins 531 and two seventh abutment blocks 532 are provided, and the two fifth positioning pins 531 and the two seventh abutment blocks 532 are arranged at intervals on the hand-held seat 52, and the eighth abutment block 533 is arranged on one side of the hand-held seat 52. The eighth abutment block 533 is used to abut and limit the side wall of the front fender 9. The fifth positioning pin 531 is plugged into and matched with the bottom end of the vehicle door, and the seventh abutment block 532 is abutted against and matched with the outer wall of the bottom end of the front fender 9. When in use, the fifth positioning pin 531, the seventh abutment block 532 and the eighth abutment block 533 are used in coordination to position the hand-held seat 52 at the lower end of the front fender 9.

[0054] Reference Fig.12 and Fig.15The gap calibration assembly 54 includes a second adjustment block 541 installed on the hand-held seat 52, a second adjustment pad 542 arranged between the second adjustment block 541 and the hand-held seat 52, and a limit plate 543 integrally formed at the end of the second adjustment block 541 away from the hand-held seat 52, wherein a plurality of second adjustment pads 542 are provided, and the plurality of second adjustment pads 542 are stacked on each other, and the second adjustment pad 542 and the second adjustment block 541 are both connected to the hand-held seat 52 by bolts.

[0055] Reference Fig.12 and Fig.15 When in use, the second adjusting block 541 is installed by passing one end of the bolt through the second adjusting block 541 and a plurality of second adjusting pads 542 and then threading them to the hand-held seat 52. The installation height of the second adjusting block 541 is adjusted by adjusting the number of second adjusting pads 542, so as to adjust the depth of the gap between the front fender 9 and the front door by adjusting the limit plate 543, and then the side wall of the limit plate 543 is abutted against the bottom end of the front fender 9 to limit the gap, so as to ensure that the staff adjusts the width of the upper and lower parts of the gap between the front fender 9 and the front door to remain consistent.

[0056] Reference Fig.12 and Fig.14 The face difference adjustment component 55 includes a plurality of ninth abutment blocks 551 fixed on the hand-held seat 52. In the present embodiment, two ninth abutment blocks 551 are provided, and the two ninth abutment blocks 551 are spaced apart. One of the ninth abutment blocks 551 is formed with a first abutment surface 552 abutting against the side surface of the front fender 9 on the side away from the hand-held seat 52, and the other ninth abutment block 551 is formed with a second abutment surface 553 abutting against the side surface of the front door on the side away from the hand-held seat 52. At the same time, a magnet 554 is also installed on the ninth abutment block 551, and the magnet 554 is magnetically adsorbed and matched with the front door and the front fender 9.

[0057] Reference Fig.12 and Fig.14 When in use, after the staff positions the hand-held seat 52 at the specified position of the front fender 9 through the positioning assembly 53, the magnetic adsorption force of the magnet 554 can be used to make the front door and the front fender 9 respectively abut against the corresponding ninth abutment block 551, thereby ensuring that the surface difference between the front fender 9 and the front door meets the standard through the cooperation of the first abutment surface 552 and the second abutment surface 553.

[0058] Reference Figure 3 In addition, a tool box 6 is fixed to the tool frame 1 , and the tool box 6 can store bolts, torque guns and other tools for installing the front fender 9 , and can also be used to place the handheld seat 52 .

[0059] A method for installing a front fender of an automobile comprises the following steps: S1. After the vehicle body 8 moves to the designated workstation along the production line, the staff pre-installs the front fender 9 at the corresponding position on the vehicle body 8; S2, after the whole mounting frame 1 is lowered to the vicinity of the vehicle body 8 by a lifting device (such as an electric hoist), the lowered position of the mounting frame 1 is adjusted with the assistance of a staff member to ensure that the guide column 21 is accurately inserted into the first through hole 81, and then the mounting frame 1 continues to be lowered until the bottom wall of the positioning groove 23 abuts against the outer wall of the connecting column 84, so that the mounting frame 1 can be initially positioned on the vehicle body 8, and at the same time ensure that the mounting frame 1 is centrally arranged on the vehicle body 8; S3. After the mounting frame 1 is initially positioned on the vehicle body 8, the first abutting block 311 also abuts against the outer surface of the vehicle body 8. Then, the first driving component 313 can be driven to rotate the second abutting block 312 to abut against the inner surface of the vehicle body 8, and the first abutting blocks 311 on both sides can be used to clamp the vehicle body 8 in the vertical direction, so as to fix the mounting frame 1 on the vehicle body 8 in the vertical direction. At the same time, the first positioning pin 321 is driven by the second driving component 322 to be inserted into the second through hole 82, and the second positioning pin 324 is driven by the first driving cylinder 325 to be inserted into the third through hole 83, so as to position the mounting frame 1 on the vehicle body 8 in the horizontal direction, and then the mounting frame 1 is positioned and locked on the vehicle body 8. S4. After the mounting frame 1 is positioned on the vehicle body 8, the top end of the front fender 9 can be pressed against the vehicle body 8 by the pressing block 41. At the same time, the bottom end of the front fender 9 is clamped and fixed by the cooperation of the first clamping assembly 42 and the second clamping assembly 43. Then, the third positioning pin 44 is driven to be inserted into the fourth through hole 91 by the third driving assembly 45, so that the front fender 9 can be accurately positioned on the vehicle body 8. S5. After the front fender 9 is positioned, the gap adjustment component 51 and the gap calibration component 54 are used in coordination to ensure that the gap between the front fender 9 and the front door is consistent from top to bottom. Finally, the flushness adjustment component 55 is used to adjust the flushness between the front fender 9 and the front door to meet the standard, thereby ensuring the assembly quality of the front fender 9 after assembly. S6. After all adjustments are completed, the staff uses a torque gun to screw the multiple bolts one by one to the corresponding positions of the front fender 9, thereby completing the installation of the front fender 9 on the vehicle body 8; S7. After the front fenders 9 on both sides are installed, the corresponding fender positioning structures 4 and vehicle body positioning structures 3 can be opened, and the mounting frame 1 is lifted away from the vehicle body 8 by the lifting device, so that the vehicle body 8 can be moved to the next process along the production line.

[0060] The implementation principle of the embodiment of the present application is as follows: when in use, the car body 8 moves with the production line to the bottom of the mounting frame 1, and then the staff controls the sling to lower the mounting frame 1 to the car body 8, and under the auxiliary guidance of the staff, the guide column 21 is aligned with the first through hole 81 and inserted into the first through hole 81 until the bottom wall of the positioning groove 23 abuts against the outer wall of the connecting column 84, and then the lowering can be stopped, and then the mounting frame 1 is positioned and locked on the car body 8 through the vertical positioning structure 31 and the horizontal positioning structure 32, so as to ensure the displacement of the mounting frame 1 during subsequent operations. After the positioning is completed, the front fender 9 pre-installed on the car body 8 can be accurately positioned through the fender positioning structure 4, and then the gap adjustment component 51, the positioning component 53 and The gap calibration component 54 is used in conjunction with the front fender 9 to adjust the gap between the front fender 9 and the front door from top to bottom to meet the standard, and then the surface difference between the front fender 9 and the front door is adjusted by the surface difference adjustment component 55. After all adjustments are completed, the staff can use a torque gun to screw multiple bolts into the corresponding positions of the front fender 9 in sequence, thereby completing the installation and adjustment of the front fender 9. Finally, the fender positioning structure 4, the body positioning structure 3 and the guide positioning structure 2 are all opened, and the mounting frame 1 is raised to be separated from the vehicle body 8 through the hoist, so as to complete the assembly of the front fender 9 and the vehicle body 8. The overall operation process is simple and convenient, which ensures the assembly quality of the front fender 9, while reducing the number of times the front fender 9 is reworked and adjusted, thereby improving the assembly efficiency.

[0061] The difference between Example 2 and Example 1 is that: Reference Fig.16 and Fig.17 The equipment frame 1 is composed of a first frame 111, a second frame 112, a third frame 121 and a fourth frame 122, wherein the first frame 111 and the second frame 112 are combined to form a left frame 11, the third frame 121 and the fourth frame 122 are combined to form a right frame 12, and the right frame 12 is slidably connected to the left frame 11 along the length direction of the equipment frame 1; that is, a first plug rod 123 is welded at the left end of the third frame 121, and a second plug rod 124 is welded at the left end of the fourth frame 122, a first plug hole for inserting the first plug rod 123 is opened at the right end of the first frame 111, and a second plug hole for inserting the second plug rod 124 is opened at the right end of the second frame 112.

[0062] Reference Fig.16 and Fig.17At the same time, the first frame 111 is slidably connected to the second frame 112 along the width direction of the equipment frame 1, and the third frame 121 is slidably connected to the fourth frame 122 along the width direction of the equipment frame 1, that is, a third plug rod 125 is welded and fixed at one end of the first frame 111 facing the second frame 112, and a third plug hole for inserting the third plug rod 125 is opened at one end of the second frame 112 facing the first frame 111, a fourth plug rod 126 is welded and fixed at one end of the third frame 121 facing the fourth frame 122, and a fourth plug hole for inserting the fourth plug rod 126 is opened at one end of the fourth frame 122 facing the third frame 121.

[0063] Reference Fig.16 and Fig.17 A group of guide columns 21, positioning blocks 22, transverse positioning structures 32, vertical positioning structures 31, fender positioning structures 4, and adjustment structures 5 are arranged at the end of the left frame 11 away from the right frame 12, and another group of guide columns 21, positioning blocks 22, transverse positioning structures 32, vertical positioning structures 31, fender positioning structures 4, and adjustment structures 5 are arranged at the end of the right frame 12 away from the left frame 11; wherein, the guide columns 21, positioning blocks 22, the second clamping assembly 43 in the fender positioning structure 4, and the adjustment structure 5 on the left frame 11 are located on the second frame 112, and the transverse positioning structure 32, vertical positioning structure 31, and the components of the fender positioning structure 4 except the second clamping assembly 43 are located on the first frame 111.

[0064] Reference Fig.16 and Fig.17 Correspondingly, since the layout of the components on the right frame 12 is symmetrical to the layout of the components on the left frame 11, the guide column 21, the positioning block 22, the second clamping assembly 43 in the fender positioning structure 4, and the adjustment structure 5 on the right frame 12 are located on the fourth frame 122, and the lateral positioning structure 32, the vertical positioning structure 31, and the components of the fender positioning structure 4 except the second clamping assembly 43 are located on the third frame 121.

[0065] Reference Fig.17 and Fig.18 A linkage structure 7 is also provided between the left frame 11 and the right frame 12. When the staff pulls the right frame 12 along the length direction of the harness frame 1, the linkage structure 7 can cooperate with the first frame 111 and the second frame 112, and the third frame 121 and the fourth frame 122 to slide relative to each other, that is, the overall length and width of the harness frame 1 are adjusted to adjust the positions of various components on the harness frame 1, so as to adapt to the assembly of vehicle bodies 8 of different specifications and models, so that the overall application range of the harness is wider.

[0066] Reference Fig.17 and Fig.18The linkage structure 7 includes a second gear 71 and a third gear 72 rotatably connected to the second frame 112, a linkage shaft 73 arranged between the second gear 71 and the third gear 72, a second rack 74 fixed on the fourth frame 122, and a third rack 75 fixed on the first frame 111. The linkage shaft 73 is rotatably connected to the second frame 112, the second gear 71 and the third gear 72 are both coaxially fixed to the linkage shaft 73, and in this embodiment, the second gear 71 is located below the third gear 72, the second gear 71 and the second rack 74 are meshed, the second rack 74 is slidably matched with the second frame 112, the third rack 75 is meshed with the third gear 72, and the third rack 75 is slidably matched with the second frame 112 and the fourth frame 122.

[0067] Reference Fig.17 and Fig.18 When in use, when the staff pulls the third frame 121 or the fourth frame 122, the second rack 74 will be driven to move, and the movement of the second rack 74 will guide the second gear 71 to rotate. The rotation of the second gear 71 synchronously drives the linkage shaft 73 and the third gear 72 to rotate, and the rotation of the third gear 72 drives the third rack 75 to slide, thereby driving the first frame 111 and the third frame 121 to slide relative to the second frame 112 and the fourth frame 122 respectively, thereby achieving the purpose of adjusting the overall size of the equipment frame 1.

[0068] Reference Fig.18 and Fig.19 The linkage shaft 73 includes an upper shaft body 731, a lower shaft body 732, an upper clamping column 733, a lower clamping column 734, an upper spring 735 and a lower spring 736, wherein the upper shaft body 731 and the lower shaft body 732 are coaxially arranged, the bottom end of the upper shaft body 731 abuts against the top end of the lower shaft body 732, the third gear 72 is coaxially fixed to the top end of the upper shaft body 731, the upper clamping column 733 is key-connected with the upper shaft body 731, and the upper clamping column 733 is connected along the upper shaft body 731. The upper spring 735 is sleeved on the upper shaft body 731, and one end of the upper spring 735 is welded to the top of the upper clamping column 733, and the other end of the upper spring 735 abuts against the side wall of the upper shaft body 731.

[0069] Reference Fig.18 and Fig.19The second gear 71 is coaxially fixed to the bottom end of the lower shaft body 732, the lower clamping column 734 is key-connected with the lower shaft body 732, and the lower clamping column 734 is connected to the lower shaft body 732 along the axial sliding of the lower shaft body 732, and the top of the lower clamping column 734 is formed with a plurality of second clamping teeth 7341, and the plurality of second clamping teeth 7341 are evenly distributed along the circumference of the lower clamping column 734, and a second clamping groove is formed between two adjacent second clamping teeth 7341; when in use The first latch tooth 7331 can be embedded in the second latch groove, and the second latch tooth 7341 is embedded in the first latch groove. A first inclined surface is formed on the first latch tooth 7331, and a second inclined surface is formed on the second latch tooth 7341. The first inclined surface and the second inclined surface cooperate with each other. The lower spring 736 is sleeved on the lower shaft body 732, and one end of the lower spring 736 is welded and fixed to the bottom end of the lower clamping column 734, and the other end of the lower spring 736 abuts against the side wall of the lower clamping column 734.

[0070] Reference Fig.18 and Fig.19 When the third frame 121 is pulled to make the right frame 12 as a whole move away from the left frame 11, the second gear 71 rotates clockwise, and the upper clamping column 733 and the lower clamping column 734 are pressed against each other, so that the upper shaft 731 and the lower shaft 732 rotate synchronously, driving the third gear 72 to rotate clockwise, thereby driving the third rack 75 to slide, thereby driving the first frame 111 and the third frame 121 to slide away from the second frame 112 and the fourth frame 122.

[0071] Reference Fig.18 and Fig.19 When the staff pushes the third frame 121 in the opposite direction to make the right frame 12 as a whole approach the left frame 11, the second gear 71 rotates counterclockwise. At this time, under the guidance of the first inclined plane and the second inclined plane, when the lower shaft body 732 rotates, the upper clamping column 733 moves upward and the lower clamping column 734 moves downward until the first clamping tooth 7331 and the second clamping tooth 7341 disengage from each other. At this time, the rotation of the second gear 71 will not drive the third gear 72 to rotate, thereby realizing the separate adjustment of the left frame 11 or the right frame 12. After the adjustment is completed, under the action of the upper spring 735 and the lower spring 736, the first clamping tooth 7331 and the second clamping tooth 7341 return to the mutually meshing state; similarly, when the third frame 121 is pushed in the opposite direction to move the third frame 121 toward the fourth frame 122, the third gear 72 rotates counterclockwise. At this time, the rotation of the third gear 72 will not drive the second gear 71 to rotate, thereby realizing the separate reduction of the length or width of the equipment frame 1.

[0072] Reference Fig.18 and Fig.19When in use, an upper connecting sleeve 737 is fixed on the upper shaft body 731, and a lower connecting sleeve 738 is fixed on the lower shaft body 732. The upper connecting sleeve 737 is covered on the outer side of the upper spring 735, and the lower connecting sleeve 738 is covered on the outer side of the lower spring 736, and the upper connecting sleeve 737 and the lower connecting sleeve 738 are coaxially arranged; when in use, the upper spring 735, the lower spring 736, the upper clamping column 733 and the lower clamping column 734 are protected by the upper connecting sleeve 737 and the lower connecting sleeve 738, so as to ensure the normal transmission cooperation between the upper spring 735, the lower spring 736, the upper clamping column 733 and the lower clamping column 734.

[0073] Reference Fig.16 and Fig.17 In addition, in the present embodiment, the guide column 21 on the right frame 12 is shorter than the guide column 21 on the left frame 11; when in use, when the harness frame 1 is lowered as a whole, the guide column 21 on the left frame 11 is first inserted into the first through hole 81 on the corresponding side. When the harness frame 1 continues to descend, the staff can adjust the position of the guide column 21 on the right frame 12 by sliding the right frame 12 to adapt to the vehicle bodies 8 of different widths, thereby realizing the installation of the front fender 9, the adjustment of the gap and the face difference for different vehicle bodies 8, thereby improving the application range of the overall device, and at the same time, the positioning of the harness frame 1 is easier.

[0074] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mounting device for a front fender of an automobile, characterized in that: The invention comprises a fixture frame (1) hoisted above a production line, wherein the fixture frame (1) is provided with a guide positioning structure (2) for guiding and positioning the fixture frame (1) when it descends, a vehicle body positioning structure (3) for positioning the fixture frame (1) on a vehicle body, a fender positioning structure (4) for positioning a front fender (9) on a vehicle body (8), and an adjustment structure (5) for adjusting the gap and flushness between a front door and the front fender (9).

2. The vehicle front fender mounting device according to claim 1, characterized in that: The guide positioning structure (2) comprises a guide column (21) and a positioning block (22) fixed on the harness frame (1), two guide columns (21) and two positioning blocks (22) are provided, and the two guide columns (21) and the two positioning blocks (22) are arranged one by one at two ends of the harness frame (1) in a length direction, the guide column (21) is plugged into the first through hole (81), and a positioning groove (23) is provided at one end of the positioning block (22) away from the harness frame (1), and the positioning groove (23) is embedded and matched with the connecting column (84).

3. The vehicle front fender mounting device according to claim 1, characterized in that: The vehicle body positioning structure (3) comprises a vertical positioning structure (31) and a transverse positioning structure (32) arranged on the harness frame (1); two groups of the transverse positioning structures (32) are arranged, and the two groups of the transverse positioning structures (32) are symmetrically arranged at both ends of the harness frame (1) in the length direction.

4. The vehicle front fender mounting device according to claim 3, characterized in that: The vertical positioning structure (31) comprises a first abutment block (311) fixed on the harness frame (1), a second abutment block (312) rotating on the harness frame (1), and a first driving assembly (313) for driving the second abutment block (312) to rotate to abut against the outer wall of the vehicle body (8); a plurality of the first abutment blocks (311) are provided, and the plurality of the first abutment blocks (311) are arranged at intervals on the harness frame (1); the second abutment block (312) and the plurality of the first abutment blocks (311) cooperate to clamp and fix the outer wall of the vehicle body (8).

5. The vehicle front fender mounting tool according to claim 3, characterized in that: The transverse positioning structure (32) comprises a first positioning pin (321) slidably arranged on the harness frame (1), a second driving component (322) for driving the first positioning pin (321) to slide and insert into a second through hole (82), a first sliding seat (323) slidably arranged on the harness frame (1), a second positioning pin (324) arranged on the first sliding seat (323), and a first driving cylinder (325) for driving the first sliding seat (323) to slide, the second driving component (322) and the first driving cylinder (325) are both mounted on the harness frame (1), and the second positioning pin (324) is plug-fitted into a third through hole (83) on the vehicle body (8).

6. The vehicle front fender mounting device according to claim 5, characterized in that: The fender positioning structure (4) comprises a clamping block (41) fixed on the tool frame (1), a first clamping assembly (42) and a second clamping assembly (43) arranged on the tool frame (1), a third positioning pin (44) slidably arranged on the tool frame (1), and a third driving assembly (45) for driving the third positioning pin (44) to move to be inserted into a fourth through hole (91), the clamping block (41) is in abutment with an outer wall of the front fender (9), the first clamping assembly (42) and the second clamping assembly (43) are respectively located at two ends of the length direction of the front fender (9), and the first clamping assembly (42) and the second clamping assembly (43) are both used to clamp and fix the front fender (9), and the third driving assembly (45) is installed on the tool frame (1).

7. The vehicle front fender mounting tool according to claim 6, characterized in that: The first clamping assembly (42) comprises a second driving cylinder (421) mounted on the first sliding seat (323), a third abutting block (422) fixed to the end of the piston rod of the second driving cylinder (421), a third driving cylinder (423) mounted on the mounting frame (1), a fourth abutting block (424) fixed to the end of the piston rod of the third driving cylinder (423), and a fourth positioning pin (425) fixed to the fourth abutting block (424), wherein the third abutting block (422) and the fourth abutting block (424) cooperate to clamp and fix the front fender (9), and the fourth positioning pin (425) is plug-fitted into the fifth through hole (92).

8. The vehicle front fender mounting tool according to claim 6, characterized in that: The second clamping assembly (43) comprises a second sliding seat (431) sliding on the fixture frame (1), a fourth driving cylinder (432) installed on the fixture frame (1) for driving the second sliding seat (431) to slide, a fifth abutment block (433) fixed on the second sliding seat (431), and a first vacuum suction cup (434) installed on the second sliding seat (431), wherein the fifth abutment block (433) and the first vacuum suction cup (434) are both in abutment with the side wall of the front fender (9).

9. The vehicle front fender mounting tool according to claim 8, characterized in that: The adjustment structure (5) comprises a gap adjustment component (51) arranged on the second sliding seat (431) for adjusting the gap between the front fender (9) and the front door, a hand-held seat (52) arranged on the equipment frame (1), a positioning component (53) arranged on the hand-held seat (52) for positioning the hand-held seat (52) on the vehicle body (8), a gap calibration component (54) arranged on the hand-held seat (52) for adjusting the gap between the front fender (9) and the front door to be consistent in vertical direction, and a face difference adjustment component (55) arranged on the hand-held seat (52) for adjusting the face difference between the front door and the front fender (9).

10. A method for installing a front fender of an automobile, implemented by using a fixture for installing a front fender of an automobile according to any one of claims 1 to 9, characterized in that: The steps include: S1. A staff member pre-installs the front fender (9) on the vehicle body (8); S2, lowering the entire harness to the position of the vehicle body through the lifting device, adjusting the position of the harness frame (1) with the assistance of the staff, and at the same time, preliminarily positioning the harness frame (1) on the vehicle body (8) under the action of the guiding positioning structure (2); S3, adjusting the vehicle body positioning structure (3) to reposition the fixture frame (1) and lock it on the vehicle body (8); S4, adjusting the position of the front fender (9) by means of the fender positioning structure (4), thereby positioning the front fender (9) relative to the mounting frame (1); S5, adjusting the gap and the flushness between the front fender (9) and the front door to meet the standard through the gap adjustment component (51), the gap calibration component (54) and the flushness adjustment component (55); S6. After all adjustments are completed, the staff uses a torque gun to tighten the bolts to complete the installation of the front fender (9) on the vehicle body (8); S7. After the installation is completed, the corresponding fender positioning structure (4) and the vehicle body positioning structure (3) are opened, and the entire fixture is raised by the hoist. When the fixture frame (1) leaves the vehicle body (8), the vehicle body (8) can be moved to the next process along the production line.

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