Front section assembly welding tool for vehicle frame

Abstract

This application relates to the field of machining technology and discloses a welding fixture for the front section assembly of a vehicle frame, including a base and a first positioning module, a second positioning module, a third positioning module, and a fourth positioning module arranged along a second direction on the base. The first positioning module includes two rotatably adjustable inclined beam positioning mechanisms for positioning and supporting corresponding inclined beams; the second positioning module is used to position and adjust the outrigger brackets; the third positioning module is used to position and adjust the engine mount; the fourth positioning module includes a centering drive mechanism and two longitudinal beam positioning mechanisms, the centering drive mechanism being used to synchronously drive the two longitudinal beam positioning mechanisms to position and clamp the corresponding longitudinal beams. The welding fixture for the front section assembly of the vehicle frame provided by this application can position the various components of the front section of the vehicle frame before performing overall welding operations, ensuring reliable positioning, guaranteed welding quality, effectively avoiding welding deformation, and ensuring product quality.

Description

Technical Field

[0001] This application relates to the field of machining technology, specifically to a welding fixture for assembling the front section of a vehicle frame. Background Technology

[0002] In a truck crane, the front section of the chassis is the front part of the chassis housing, used to support components such as the cab, engine, and fifth outrigger.

[0003] Currently, the assembly of the front section of the chassis involves manual measurement and positioning on a platform, followed by spot welding. Because the front section of the chassis is a slender, semi-enclosed structure, not a fully enclosed box, and because there are no tooling fixtures for positioning during manual welding, the accuracy of manual measurements is low. This leads to deformation during the assembly of the front section with the chassis box and the installation of components such as the engine, resulting in a compromised final product quality. Summary of the Invention

[0004] The purpose of this application is to provide a welding fixture for assembling the front section of a vehicle frame, in order to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, this application provides a front frame assembly welding fixture for assembling and welding the front section of a vehicle frame. The front frame includes two longitudinal beams arranged in alignment, a support leg bracket disposed between the two longitudinal beams, an engine bracket disposed inside the longitudinal beams, and two inclined beams arranged in alignment. The two inclined beams are disposed at the front ends of the longitudinal beams and gradually approach each other in a direction away from the longitudinal beams. The front frame assembly welding fixture includes:

[0006] Base;

[0007] The first positioning module is disposed on the base and includes two inclined beam positioning mechanisms that can be rotated and adjusted about an axis located in the vertical direction. The two inclined beam positioning mechanisms are arranged in alignment along the first direction to position and support the corresponding inclined beams.

[0008] The second positioning module is disposed on the base and is used to position and adjust the support leg bracket;

[0009] A third positioning module is disposed on the base and used for positioning and adjusting the engine bracket; and

[0010] The fourth positioning module includes a centering drive mechanism disposed on the base and two longitudinal beam positioning mechanisms disposed on the centering drive mechanism along the first direction. The centering drive mechanism is used to synchronously drive the two longitudinal beam positioning mechanisms to position and clamp the corresponding longitudinal beams.

[0011] The first positioning module, the second positioning module, the third positioning module, and the fourth positioning module are arranged along the second direction.

[0012] As a further improvement to the above technical solution:

[0013] In one possible implementation, the first positioning module further includes:

[0014] A first base is disposed on the base, and the first base is further provided with two rotatably adjustable inclined beam positioning mechanisms; and

[0015] A locking mechanism is provided on the inclined beam positioning mechanism, and the locking mechanism is used to lock the inclined beam positioning mechanism on the first base.

[0016] In one possible implementation, the inclined beam positioning mechanism includes:

[0017] The base can be rotated around an axis located in the vertical direction;

[0018] A support frame, on which a support pad is provided, the support pad being used to abut against the bottom of the inclined beam;

[0019] A first positioning bracket, mounted on a rotating base and located on one side of the support frame, is used to abut against the side wall of the inclined beam; and

[0020] An electromagnetic adsorption component is disposed on the first positioning bracket and is used to selectively magnetically attract the inclined beam.

[0021] In one possible implementation, the inclined beam positioning mechanism includes a rotating base rotatably mounted on the first base, the rotating base being provided with an arc-shaped guide groove and scale markings;

[0022] The locking mechanism passes through the guide groove and is connected to the first base.

[0023] In one possible implementation, the second positioning module includes:

[0024] A second base is disposed on the base;

[0025] The first adjustment mechanism is disposed on the second base;

[0026] A second adjusting mechanism is disposed on the first adjusting mechanism, and the first adjusting mechanism is used to drive the second adjusting mechanism to move in a third direction; and

[0027] A first positioning platform is mounted on the second adjustment mechanism and used to position the support leg bracket. The second adjustment mechanism is used to drive the first positioning platform to move along the first direction.

[0028] The first direction, the second direction, and the third direction are perpendicular to each other.

[0029] In one possible implementation, the third positioning module includes:

[0030] A third base is disposed on the base; and

[0031] Two flipping positioning mechanisms are aligned and arranged on the third base along the first direction. The flipping positioning mechanisms are used to adjust the relative angle between the engine bracket and the side wall of the longitudinal beam.

[0032] In one possible implementation, the flipping positioning mechanism includes:

[0033] A flip-up seat is disposed on the third base; and

[0034] The second positioning platform is pivotally mounted on the flipping seat, and the second positioning platform is provided with positioning pins for positioning the engine bracket;

[0035] The axis of the second positioning platform pivoting relative to the flipping seat is parallel to the second direction.

[0036] In one possible implementation, the fourth positioning module further includes a fourth base disposed on the base;

[0037] The centering drive mechanism includes a centering drive component and a threaded screw. The threaded screw is arranged on the fourth base along the first direction and rotates with the fourth base. The centering drive component is connected to one end of the threaded screw extending outside the fourth base.

[0038] The threaded screw has a first threaded section and a second threaded section with opposite directions of rotation. One of the longitudinal beam positioning mechanisms is connected to the first threaded section via a first nut seat, and the other longitudinal beam positioning mechanism is connected to the second threaded section via a second nut seat.

[0039] In one possible implementation, the longitudinal beam positioning mechanism includes:

[0040] The movable seat is connected to the centering drive mechanism via a transmission.

[0041] Two second positioning brackets are spaced apart on the movable seat along the first direction, and a clamping space for accommodating the longitudinal beam is formed between the two second positioning brackets;

[0042] A fixing block is disposed on one of the second positioning brackets; and

[0043] A movable clamping block is mounted on another second positioning bracket. The movable clamping block is aligned with the fixed clamping block and is used to position and clamp the longitudinal beam.

[0044] In one possible implementation, a track is laid on the base along the second direction, and the first positioning module, the second positioning module, the third positioning module, and the fourth positioning module are all slidably disposed on the track.

[0045] Compared to existing technologies, the beneficial effects of this application are:

[0046] The chassis front assembly welding fixture provided in this application includes a first positioning module, a second positioning module, a third positioning module, and a fourth positioning module arranged on a base along a second direction. When assembling the chassis front section, the angles of the two inclined beam positioning mechanisms are rotated to match the shape of the two inclined beams after welding. Then, the two inclined beam positioning mechanisms are used to position and support the two inclined beams. Next, the centering drive mechanism in the fourth positioning module adjusts the distance between the two longitudinal beam positioning mechanisms in the first direction to match the width of the two longitudinal beams after welding. Then, the two longitudinal beam positioning mechanisms are used to position and clamp the longitudinal beams respectively, thereby restricting the movement of the longitudinal beams. Then, the second positioning module positions and adjusts the outrigger brackets to place them in a preset position. The third positioning module positions and adjusts the engine bracket to place it in a preset position. Finally, the assembled longitudinal beams, inclined beams, outrigger brackets, and engine brackets are welded together. Therefore, the welding fixture for the front frame assembly provided in this application performs overall welding operations after positioning the longitudinal beams, diagonal beams, outrigger brackets, and engine brackets. This ensures reliable positioning, guaranteed welding quality, and effectively avoids welding deformation, thus ensuring product quality.

[0047] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0048] The accompanying drawings are provided to further illustrate this application and form part of the specification. They are used together with the following detailed description to explain this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0049] Figure 1 This illustration shows a three-dimensional structural diagram of a welded front section of a vehicle frame provided in an embodiment of this application;

[0050] Figure 2This illustration shows a three-dimensional structural schematic diagram of a front section assembly welding fixture for a vehicle frame provided in an embodiment of this application;

[0051] Figure 3 It shows Figure 2 The diagram shows a structural schematic of the front section of the chassis being clamped in a welding fixture.

[0052] Figure 4 It shows Figure 2 A magnified view of a portion of point A in the middle;

[0053] Figure 5 It shows Figure 2 A magnified view of a portion of point B in the middle;

[0054] Figure 6 It shows Figure 2 A magnified view of a portion of point C in the middle;

[0055] Figure 7 It shows Figure 2 A magnified view of a portion of point D.

[0056] Explanation of reference numerals in the attached figures:

[0057] 10. Front section of frame; 11. Longitudinal beam; 12. Diagonal beam; 13. Outrigger bracket; 14. Engine mount; 15. Bumper;

[0058] 100. Base; 110. Track;

[0059] 200. First positioning module; 210. First base; 220. Locking mechanism; 230. Inclined beam positioning mechanism; 231. Rotating base; 2310. Guide groove; 2311. Scale marking; 232. Support frame; 2320. Support pad; 233. First positioning bracket; 234. Electromagnetic adsorption assembly; 2340. Electromagnetic component; 2341. First adjusting screw; 2342. First guide shaft;

[0060] 300, Second positioning module; 310, Second base; 320, First adjustment mechanism; 321, Adjustment drive component; 330, Second adjustment mechanism; 340, First positioning platform; 350, Positioning boss;

[0061] 400. Third positioning module; 410. Third base; 420. Flip positioning mechanism; 421. Flip seat; 422. Second positioning platform; 423. Positioning pin;

[0062] 500. Fourth positioning module; 510. Fourth base; 520. Centering drive mechanism; 521. Centering drive component; 530. Longitudinal beam positioning mechanism; 531. Movable seat; 532. Second positioning bracket; 533. Fixed clamping block; 534. Movable clamping block; 5340. Clamping block body; 5341. Second adjusting screw; 5342. Second guide shaft;

[0063] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0064] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.

[0065] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0066] In the embodiments of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0070] Example

[0071] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a front section assembly welding fixture for assembling and welding the front section 10 of the vehicle frame, and in particular, provides a front section assembly welding fixture for a truck crane.

[0072] The front section 10 of the frame includes two longitudinal beams 11 arranged in alignment, a support leg bracket 13 disposed between the two longitudinal beams 11, an engine bracket 14 disposed inside the longitudinal beams 11, and two diagonal beams 12 arranged in alignment. The two diagonal beams 12 are disposed at the front end of the longitudinal beams 11 and gradually approach each other in a direction away from the longitudinal beams 11. The end of the two diagonal beams 12 away from the longitudinal beams 11 is used to install a bumper 15.

[0073] The frame front assembly welding fixture provided in this embodiment includes a base 100, a first positioning module 200, a second positioning module 300, a third positioning module 400, and a fourth positioning module 500. In this embodiment, the width direction of the base 100 is defined as the first direction X, the length direction of the base 100 is defined as the second direction Y, and the height direction of the base 100 is defined as the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The first positioning module 200, the second positioning module 300, the third positioning module 400, and the fourth positioning module 500 are arranged along the second direction Y.

[0074] The first positioning module 200 includes two inclined beam positioning mechanisms 230 that are rotatable and adjustable about an axis located in the vertical direction. The two inclined beam positioning mechanisms 230 are aligned along the first direction X and are used to position and support the corresponding inclined beams 12. The second positioning module 300 is disposed on the base 100 and is used to position and adjust the outrigger brackets 13. The third positioning module 400 is disposed on the base 100 and is used to position and adjust the engine bracket 14. The fourth positioning module 500 includes a centering drive mechanism 520 disposed on the base 100 and two longitudinal beam positioning mechanisms 530 aligned along the first direction X on the centering drive mechanism 520. The centering drive mechanism 520 is used to synchronously drive the two longitudinal beam positioning mechanisms 530 to position and clamp the corresponding longitudinal beams 11.

[0075] When assembling the front section 10 of the chassis, the angles of the two inclined beam positioning mechanisms 230 are rotated to match the shape of the two inclined beams 12 after welding. Then, the two inclined beam positioning mechanisms 230 are used to position and support the two inclined beams 12. Next, the centering drive mechanism 520 in the fourth positioning module 500 adjusts the spacing of the two longitudinal beam positioning mechanisms 530 in the first direction X to match the width of the two longitudinal beams 11 after welding. Then, the two longitudinal beam positioning mechanisms 530 respectively position and clamp the longitudinal beams 11, thereby restricting the movement of the longitudinal beams 11. Then, the second positioning module 300 positions and adjusts the outrigger bracket 13 to place the outrigger bracket 13 in a preset position. The third positioning module 400 positions and adjusts the engine bracket 14 to place the engine bracket 14 in a preset position. Finally, the assembled longitudinal beams 11, inclined beams 12, outrigger brackets 13 and engine bracket 14 are welded together. Therefore, the welding fixture for the front section assembly of the vehicle frame provided in this embodiment performs overall welding operations after positioning the longitudinal beam 11, the diagonal beam 12, the outrigger bracket 13, and the engine bracket 14. The positioning is reliable, the welding quality is guaranteed, welding deformation is effectively avoided, and product quality is ensured.

[0076] To more clearly describe the technical solution of this application, the following is a detailed description of each module in the welding fixture for the front section assembly of the vehicle frame provided in this embodiment:

[0077] Please see Figure 2 , Figure 3 and Figure 4 The aforementioned first positioning module 200 further includes a first base 210 and a locking mechanism 220. The first base 210 is disposed on the base 100, and the first base 210 is also provided with two rotatably adjustable inclined beam positioning mechanisms 230. Each inclined beam positioning mechanism 230 is provided with a locking mechanism 220, which is used to lock the inclined beam positioning mechanism 230 onto the first base 210 to restrict the rotational adjustment of the inclined beam positioning mechanism 230. Thus, when it is necessary to adjust the inclined beam positioning mechanism 230, the locking mechanism 220 is released from the inclined beam positioning mechanism 230, and then the inclined beam positioning mechanism 230 is rotated to a preset position, and then the locking mechanism 220 locks the inclined beam positioning mechanism 230 onto the first base 210.

[0078] Alternatively, the locking mechanism 220 can be selected as a bolt assembly or a pin assembly.

[0079] The inclined beam positioning mechanism 230 includes a rotating base 231, a support frame 232, a first positioning bracket 233, and an electromagnetic adsorption assembly 234. The rotating base 231 is rotatably mounted on the first base 210, for example, through a shaft and hole connection or a shaft and bearing housing connection. Thus, the rotating base 231 can rotate about an axis located in the vertical direction. The support frame 232 and the first positioning bracket 233 are both mounted on the rotating base 231, and can rotate and adjust together with the rotating base 231.

[0080] Furthermore, a support pad 2320 is provided on the support frame 232, which is used to abut against the bottom of the inclined beam 12. The first positioning bracket 233 is provided on the rotating base 231 and located on one side of the support frame 232. Specifically, the first positioning bracket 233 is located on the side of the support frame 232 away from the other inclined beam positioning mechanism 230, and is used to abut against the side wall of the inclined beam 12. Thus, when positioning and clamping the inclined beam 12, the inclined beam 12 is first placed on the support pad 2320 for support, and then the side wall of the inclined beam 12 is abutted against the first positioning bracket 233, thereby completing the positioning of the inclined beam 12.

[0081] In some embodiments, the support pad 2320 is detachably connected to the support frame 232, so that when different specifications of inclined beams 12 need to be installed, the support pad 2320 of different specifications can be replaced for adaptation. Optionally, the detachable connection can be a plug-in connection, a snap-fit ​​connection, a threaded connection, or a screw connection, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0082] An electromagnetic adsorption component 234 is mounted on the first positioning bracket 233. The electromagnetic adsorption component 234 is used to selectively magnetically attract the inclined beam 12. Understandably, once the inclined beam 12 is positioned, energizing the electromagnetic adsorption component 234 causes it to attract the inclined beam 12 (which is made of magnetically adsorbable metal), thereby restricting its movement on the support pad 2320. Another inclined beam 12 is then installed in another inclined beam positioning mechanism 230 using the same method.

[0083] Furthermore, the electromagnetic adsorption assembly 234 includes an electromagnetic component 2340, a first adjusting screw 2341, and a first guide shaft 2342. The electromagnetic component 2340 is arranged on the first positioning bracket 233 for abutting against one side of the inclined beam 12. One end of the first adjusting screw 2341 is movably connected to the electromagnetic component 2340, and the other end passes through the first positioning bracket 233 and is threadedly engaged with it. One end of the first guide shaft 2342 is connected to the electromagnetic component 2340, and the other end passes through the first positioning bracket 233 and is slidably engaged with it. Thus, by turning the first adjusting screw 2341, the electromagnetic component 2340 can be driven to extend or retract, so as to finely adjust the electromagnetic component 2340 in a first direction, allowing it to approach and adsorb onto the side wall of the inclined beam 12.

[0084] In some embodiments, the rotating base 231 is provided with an arc-shaped guide groove 2310, and the rotating base 231 is also provided with a scale mark 2311; wherein, the locking mechanism 220 passes through the guide groove 2310 and is connected to the first base 210. In this way, the locking mechanism 220 can cooperate with the guide groove 2310 to guide and limit the rotation of the rotating base 231, and can also lock the rotating base 231 to the first base 210 through the guide groove 2310 to restrict the rotation of the rotating base 231. At the same time, the scale mark 2311 can facilitate the improvement of adjustment speed and accuracy, and improve the efficiency of positioning and clamping.

[0085] In some embodiments, there are two first positioning modules 200, and the two first positioning modules 200 have the same structure, which will not be described in detail here. It can be understood that setting two first positioning modules 200 can improve the stability of the positioning and clamping of the inclined beam 12.

[0086] Please see Figure 2 , Figure 3 and Figure 5 The second positioning module 300 includes a second base 310, a first adjustment mechanism 320, a second adjustment mechanism 330, and a first positioning platform 340. The second base 310 is disposed on the base 100. The first adjustment mechanism 320 is disposed on the second base 310. The second adjustment mechanism 330 is disposed on the first adjustment mechanism 320. The first positioning platform 340 is disposed on the second adjustment mechanism 330 and is used to position the support leg 13.

[0087] Specifically, the first positioning platform 340 is provided with a positioning boss 350, and the support leg bracket 13 can be inserted into the positioning boss 350 for positioning. The positioning boss 350 can be a positioning pin 423.

[0088] In this embodiment, the first adjustment mechanism 320 can output reciprocating linear motion along the third direction Z, and the second adjustment mechanism 330 can output reciprocating linear motion along the first direction X. Thus, the first adjustment mechanism 320 drives the second adjustment mechanism 330 to move along the third direction Z, and the second adjustment mechanism 330 drives the first positioning platform 340 to move along the second direction Y. Therefore, with the cooperation of the first adjustment mechanism 320 and the second adjustment mechanism 330, the outrigger bracket 13 can be adjusted in both the first direction X and the third direction Z, so that the outrigger bracket 13 is accurately positioned at a preset position, improving positioning accuracy and welding quality.

[0089] In some embodiments, both the first adjusting mechanism 320 and the second adjusting mechanism 330 include a lead screw drive mechanism and an adjusting drive member 321, wherein the adjusting drive member 321 is connected to the lead screw in the lead screw drive mechanism. Optionally, the adjusting drive member 321 may be a handwheel, a motor, or a motor.

[0090] In other embodiments, both the first adjusting mechanism 320 and the second adjusting mechanism 330 include hydraulic cylinders, pneumatic cylinders, electric push rods, electric cylinders, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0091] Please see Figure 2 , Figure 3 and Figure 6 The aforementioned third positioning module 400 includes a third base 410 and two flip positioning mechanisms 420. The third base 410 is disposed on the base 100. The two flip positioning mechanisms 420 are aligned and arranged on the third base 410 along the first direction X, and the flip positioning mechanisms 420 are used to adjust the relative angle between the engine bracket 14 and the side wall of the longitudinal beam 11.

[0092] Specifically, the flipping positioning mechanism 420 includes a flipping seat 421 and a second positioning platform 422. The flipping seat 421 is mounted on a third base 410. The second positioning platform 422 is pivotally mounted on the flipping seat 421 via a pivot shaft. The second positioning platform 422 is provided with a positioning pin 423 for positioning the engine bracket 14. The axis of pivoting of the second positioning platform 422 relative to the flipping seat 421 is parallel to the second direction Y. In this way, the engine bracket 14 can be placed on the second positioning platform 422 and positioned by the positioning pin 423 on the second positioning platform 422. Then, the relative angle between the engine bracket 14 and the side wall of the longitudinal beam 11 can be adjusted by rotating the second positioning platform 422.

[0093] Please see Figure 2 , Figure 3 and Figure 7The aforementioned fourth positioning module 500 also includes a fourth base 510 disposed on the base 100. The centering drive mechanism 520 includes a centering drive member 521 and a threaded screw (not shown). The threaded screw is arranged on the fourth base 510 along the first direction X and is rotatably engaged with the fourth base 510. The centering drive member 521 is connected to one end of the threaded screw extending outside the fourth base 510 for driving the threaded screw to rotate.

[0094] Optionally, the centering drive element 521 may be a handwheel, a motor, or a motor, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0095] The lead screw has a first threaded section and a second threaded section with opposite directions of rotation. One longitudinal beam positioning mechanism 530 is connected to the first threaded section via a first nut seat, and the other longitudinal beam positioning mechanism 530 is connected to the second threaded section via a second nut seat. Thus, the distance between the two longitudinal beam positioning mechanisms 530 can be adjusted by driving the lead screw to rotate forward and backward using the centering drive 521, to accommodate two longitudinal beams 11 with different design widths.

[0096] The aforementioned longitudinal beam positioning mechanism 530 includes a movable base 531, two second positioning brackets 532, a fixed clamping block 533, and a movable clamping block 534. The movable base 531 is mounted on the fourth base 510 and is connected to the centering drive mechanism 520. The two second positioning brackets 532 are spaced apart on the movable base 531 along a first direction X, forming a clamping space between the two second positioning brackets 532 to accommodate the longitudinal beam 11. The fixed clamping block 533 is mounted on one of the second positioning brackets 532. The movable clamping block 534 is mounted on the other second positioning bracket 532, and the movable clamping block 534 is aligned with the fixed clamping block 533. The fixed bracket and the movable clamping block 534 cooperate to position and clamp the longitudinal beam 11.

[0097] Furthermore, the movable clamping block 534 includes a clamping block body 5340, a second adjusting screw 5341, and a second guide shaft 5342. The clamping block body 5340 is arranged on the side of the corresponding second positioning bracket 532 near the fixed clamping block 533. One end of the second adjusting screw 5341 is movably connected to the clamping block body 5340, and the other end passes through the second positioning bracket 532 and is threadedly engaged with it. One end of the second guide shaft 5342 is connected to the clamping block body 5340, and the other end passes through the second positioning bracket 532 and is slidably engaged with it. Thus, by turning the second adjusting screw 5341, the clamping block body 5340 can be driven to extend or retract, so that the clamping block body 5340 can move closer to or further away from the fixed clamping block 533, thereby achieving clamping and positioning of the longitudinal beam 11.

[0098] In some embodiments, two or more fourth positioning modules 500 are provided; this embodiment illustrates two fourth positioning modules 500. It is understood that the number of fourth positioning modules 500 can improve the alignment effect of the longitudinal beam 11 in the length direction, ensure the stability of the longitudinal beam 11 after clamping, and improve welding quality.

[0099] It should be noted that the two fourth positioning modules 500 are arranged according to the length of the longitudinal beam 11. In this embodiment, the third positioning module 400 is located between the two fourth positioning modules 500.

[0100] Please see Figures 2 to 7 In this embodiment, a track 110 is laid on the base 100 along the second direction Y. The first positioning module 200, the second positioning module 300, the third positioning module 400, and the fourth positioning module 500 are all slidably disposed on the track 110. This allows for adjustment of the positions of the first positioning module 200, the second positioning module 300, the third positioning module 400, and the fourth positioning module 500 in the second direction Y, thereby adapting to the front section 10 of the frame with different length specifications.

[0101] Specifically, the bottom of the first base 210 in the first positioning module 200 is provided with a first slider that slides in conjunction with the track 110. The bottom of the second base 310 in the second positioning module 300 is provided with a second slider that slides in conjunction with the track 110. The bottom of the third base 410 in the third positioning module 400 is provided with a third slider that slides in conjunction with the track 110. The bottom of the fourth base 510 in the fourth positioning module 500 is provided with a fourth slider that slides in conjunction with the track 110. Locking pins are provided on the first base 210, second base 310, third base 410, and fourth base 510 to limit the sliding of the first base 210, second base 310, third base 410, and fourth base 510 relative to the base 100.

[0102] Compared to existing technologies, the welding fixture for the front frame assembly provided in this embodiment has the following advantages:

[0103] 1. The diagonal beam 12, longitudinal beam 11, outrigger bracket 13, and engine bracket 14 in the front section 10 of the frame are all equipped with corresponding positioning modules for positioning and clamping, which improves accuracy and welding efficiency.

[0104] 2. The front section welding fixture of the frame has good adjustability, thus it can be compatible with the welding of 10 pairs of front sections of various frame specifications.

[0105] The optional embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present application, various simple modifications can be made to the technical solutions of the embodiments of the present application, and these simple modifications all fall within the protection scope of the embodiments of the present application.

[0106] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the embodiments of this application will not describe the various possible combinations separately.

[0107] Furthermore, various different implementation methods of the embodiments of this application can be combined arbitrarily, as long as they do not violate the spirit of the embodiments of this application, they should also be regarded as the content disclosed in the embodiments of this application.

Claims

1. A front frame assembly welding fixture for assembling and welding a front frame section (10), the front frame section (10) comprising two longitudinal beams (11) arranged in alignment, a support leg bracket (13) disposed between the two longitudinal beams (11), an engine bracket (14) disposed inside the longitudinal beams (11), and two inclined beams (12) arranged in alignment, the two inclined beams (12) being disposed at the front end of the longitudinal beams (11), and the two inclined beams (12) gradually approaching each other in a direction away from the longitudinal beams (11); characterized in that, The welding fixture for the front section assembly of the vehicle frame includes: Base (100); A first positioning module (200) is disposed on the base (100) and includes two inclined beam positioning mechanisms (230) that can be rotated and adjusted about an axis located in the vertical direction. The two inclined beam positioning mechanisms (230) are arranged in alignment along a first direction (X) for positioning and supporting the corresponding inclined beam (12). The first positioning module (200) also includes a first base (210) and a locking mechanism (220). The first base (210) is disposed on the base (100), and the first base (210) is also provided with two rotatably adjustable inclined beam positioning mechanisms (230). The inclined beam positioning mechanism (230) is provided with the locking mechanism (220) for locking the inclined beam positioning mechanism (230) on the first base (210). The second positioning module (300) is disposed on the base (100) and is used to position and adjust the outrigger bracket (13). A third positioning module (400) is disposed on the base (100) and used to position and adjust the engine mount (14); and The fourth positioning module (500) includes a centering drive mechanism (520) disposed on the base (100) and two longitudinal beam positioning mechanisms (530) aligned on the centering drive mechanism (520) along the first direction (X). The centering drive mechanism (520) is used to synchronously drive the two longitudinal beam positioning mechanisms (530) to position and clamp the corresponding longitudinal beam (11). The first positioning module (200), the second positioning module (300), the third positioning module (400), and the fourth positioning module (500) are arranged along the second direction (Y).

2. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The inclined beam positioning mechanism (230) includes: The base (231) can be rotated about an axis located in the vertical direction; A support frame (232) is provided with a support pad (2320), which is used to abut against the bottom of the inclined beam (12); The first positioning bracket (233) is disposed on the rotating base (231) and located on one side of the support frame (232), for abutting against the side wall of the inclined beam (12); and An electromagnetic adsorption component (234) is disposed on the first positioning bracket (233) for selectively magnetically adsorbing the inclined beam (12).

3. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The inclined beam positioning mechanism (230) includes a rotating base (231) rotatably mounted on the first base (210), and the rotating base (231) is provided with an arc-shaped guide groove (2310) and a scale mark (2311). The locking mechanism (220) passes through the guide groove (2310) and is connected to the first base (210).

4. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The second positioning module (300) includes: The second base (310) is disposed on the base (100); The first adjustment mechanism (320) is disposed on the second base (310); A second adjusting mechanism (330) is disposed on the first adjusting mechanism (320), the first adjusting mechanism (320) being used to drive the second adjusting mechanism (330) to move along a third direction (Z); and The first positioning platform (340) is disposed on the second adjustment mechanism (330) and used to position the outrigger bracket (13). The second adjustment mechanism (330) is used to drive the first positioning platform (340) to move along the first direction (X). The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

5. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The third positioning module (400) includes: A third base (410) is disposed on the base (100); and Two flip positioning mechanisms (420) are arranged in alignment on the third base (410) along the first direction (X). The flip positioning mechanisms (420) are used to adjust the relative angle between the engine bracket (14) and the side wall of the longitudinal beam (11).

6. The welding fixture for the front section assembly of the vehicle frame according to claim 5, characterized in that, The flipping positioning mechanism (420) includes: A flip-up base (421) is disposed on the third base (410); and The second positioning platform (422) is pivotally mounted on the flip seat (421), and the second positioning platform (422) is provided with a positioning pin (423) for positioning the engine bracket (14). The axis of pivot of the second positioning platform (422) relative to the flipping seat (421) is parallel to the second direction (Y).

7. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The fourth positioning module (500) also includes a fourth base (510) disposed on the base (100); The centering drive mechanism (520) includes a centering drive member (521) and a threaded screw. The threaded screw is arranged on the fourth base (510) along the first direction (X) and rotates in cooperation with the fourth base (510). The centering drive member (521) is connected to one end of the threaded screw extending outside the fourth base (510). The threaded screw has a first threaded section and a second threaded section with opposite directions of rotation. One of the longitudinal beam positioning mechanisms (530) is connected to the first threaded section via a first nut seat, and the other longitudinal beam positioning mechanism (530) is connected to the second threaded section via a second nut seat.

8. The welding fixture for the front section assembly of the vehicle frame according to claim 1, characterized in that, The longitudinal beam positioning mechanism (530) includes: The movable seat (531) is connected in transmission to the centering drive mechanism (520); Two second positioning brackets (532) are spaced apart on the movable seat (531) along the first direction (X), and a clamping space for accommodating the longitudinal beam (11) is formed between the two second positioning brackets (532); A fixing block (533) is disposed on one of the second positioning brackets (532); and A movable clamping block (534) is disposed on another second positioning bracket (532). The movable clamping block (534) is aligned with the fixed clamping block (533) and is used to position and clamp the longitudinal beam (11).

9. The welding fixture for the front section assembly of the vehicle frame according to any one of claims 1-8, characterized in that, A track (110) is laid on the base (100) along the second direction (Y), and the first positioning module (200), the second positioning module (300), the third positioning module (400) and the fourth positioning module (500) are all slidably disposed on the track (110).

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