AGV for automobile chassis installation and installation method

Abstract

The present invention discloses an AGV for installing a car chassis and an installation method. The AGV for installing a car chassis includes an AGV body and a fixed tool and a mobile tool installed on the upper end surface of the AGV body for use in conjunction with the car chassis assembly; the car chassis in this application mainly includes two parallel and spaced car chassis longitudinal beams and a plurality of cross beams and sub-plates connected therebetween. When using this application, the two car chassis longitudinal beams are supported and fixed by the workpiece-bearing U-shaped lever arms of the right clamping unit and the left clamping unit, respectively, and locked with a chain so that they do not tilt. The workpiece-bearing U-shaped lever arms can tilt to a preset angle under the drive of the swing arm hydraulic cylinder, and then the installation of the cross beam between the two car chassis longitudinal beams is completed. When the present application is installed on an AGV, the car chassis can be supported and installed with good effect.

Description

Technical Field

[0001] The present invention relates to the technical field of AGV structures, and in particular to an AGV for mounting on an automobile chassis and an installation method thereof. Background Art

[0002] AGVs (Automated Guided Vehicles), also commonly known as AGV carts, are transport vehicles equipped with automatic navigation devices, such as electromagnetic or optical ones, that can travel along a prescribed navigation path and have safety protection and various transfer functions. With the continuous development of AGV technology, AGVs are gradually being applied in more scenarios.

[0003] As a vehicle component, the automobile chassis is heavy and has many components, making assembly complex. Assembly requires multiple steps. Traditionally, chassis movement and assembly have primarily relied on overhead cranes and manual labor, which is time-consuming and labor-intensive, resulting in low assembly efficiency. Summary of the Invention

[0004] In view of the technical problems described in the above-mentioned conventional technology, the object of the present invention is to provide an AGV for mounting on an automobile chassis and an installation method.

[0005] To achieve the purpose of the present invention, the technical solution provided by the present invention is as follows:

[0006] First aspect

[0007] The present invention provides an AGV for automobile chassis installation, comprising an AGV body and a fixed tool and a mobile tool mounted on the upper end surface of the AGV body and used in conjunction with each other for automobile chassis assembly;

[0008] The fixed tooling is fixedly mounted on one end of the upper end surface of the AGV body, and the movable tooling is mounted on the upper end surface of the AGV body through a moving mechanism and can move on the upper end surface of the AGV body, thereby adjusting the distance between the fixed tooling and the movable tooling;

[0009] The fixed tooling and the movable tooling each include a right clamping unit and a left clamping unit arranged in a symmetrical structure. When assembling the automobile chassis, the right clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam, and the left clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam.

[0010] Second aspect

[0011] The present invention also provides a method for installing an automobile chassis, wherein the method uses the above-mentioned AGV for installing an automobile chassis;

[0012] The method comprises the following steps:

[0013] Step 1: Use the lifting mechanism to lift the first automobile chassis longitudinal beam and place it on the right clamping unit or left clamping unit on the same side of the fixed tooling and the movable tooling;

[0014] Step 2: Use the lifting mechanism to lift the second automobile chassis longitudinal beam and place it on the left clamping unit or the right clamping unit on the same side of the fixed tooling and the movable tooling;

[0015] Step 3: All left and right gripper units are simultaneously opened to a preset angle upward and outward, so that the longitudinal beam of the vehicle chassis is tilted;

[0016] Step 4: Use the lifting mechanism to sequentially lift multiple cross beams and fix them to the first vehicle chassis longitudinal beam or the second vehicle chassis longitudinal beam in turn;

[0017] Step 5: All left gripper units and right gripper units rotate back to their original positions at the same time, and fix the first automobile chassis longitudinal beam or the second automobile chassis longitudinal beam with the assembled cross beam to the second automobile chassis longitudinal beam or the first automobile chassis longitudinal beam. Finally, the entire automobile chassis is placed horizontally on the fixed tooling and the movable tooling, and the automobile chassis is lifted away by the crane mechanism.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The automobile chassis in this application primarily comprises two parallel, spaced-apart longitudinal beams, and a plurality of crossbeams and sub-plates connected therebetween. When using this application, the two longitudinal beams are supported and fixed by the workpiece-carrying U-shaped levers of the right and left clamping units, respectively, and locked with chains to prevent them from tilting. Driven by a swing arm hydraulic cylinder, the U-shaped levers can tilt to a preset angle, completing the installation of the crossbeam between the two longitudinal beams. Using this application installed on an AGV, it is possible to effectively support and install the automobile chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a first schematic diagram of the structure of an embodiment of the present application;

[0021] Figure 1 In the figure, AGV body 1, fixed tooling 2, mobile tooling 3, support frame 4;

[0022] Figure 2 This is a second schematic diagram of the structure of an embodiment of the present application;

[0023] Figure 2 In the middle, AGV walking mechanism 5;

[0024] Figure 3 This is a first schematic diagram of the structure of the fixing tool in an embodiment of the present application;

[0025] Figure 3 In the middle, 101 is a first transverse driving motor, 102 is a right clamping jaw unit, 103 is a left clamping jaw unit, and 104 is a bottom mounting plate;

[0026] Figure 4 This is a second schematic diagram of the structure of the fixing tool in the embodiment of the present application;

[0027] Figure 5 This is a first schematic diagram of the structure of the right clamping jaw unit in an embodiment of the present application;

[0028] Figure 5 In the middle, 1021 chain adjustment frame, 1022 workpiece positioning handle, 1023 manual hand clamp, 1024 locking chain, 1025 workpiece carrying U-shaped force arm, 1026 base plate, 1028 clamping jaw mounting frame;

[0029] Figure 6 This is a second schematic diagram of the structure of the right clamping jaw unit in an embodiment of the present application;

[0030] Figure 7 This is a third schematic diagram of the structure of the right clamping jaw unit in an embodiment of the present application;

[0031] Figure 7 Among them, 1029 is the main load-bearing shaft, 10210 is the hydraulic cylinder fixed with a seat bearing, 10211 is the swing arm hydraulic cylinder, and 10212 is the secondary load-bearing shaft.

[0032] Figure 8 This is a schematic diagram of the driving structure of the first transverse drive motor in an embodiment of the present application;

[0033] Figure 8 Among them, 1011 sliding dustproof plate, 1012 guide rail, 1013 fixed dustproof plate, 1027 rack plate.

[0034] Figure 9 This is a schematic diagram of the installation structure of the workpiece positioning handle in the embodiment of the present application;

[0035] Figure 10 This is a first schematic diagram of the mobile tooling structure in an embodiment of the present application;

[0036] Figure 10 In the middle, longitudinal guide rail 201, first hinge 202, longitudinal moving assembly 203, spur rack 204, support block 205, second roller assembly 208, second hinge 210;

[0037] Figure 11 This is a second schematic diagram of the mobile tooling structure in an embodiment of the present application;

[0038] Figure 12 This is a third schematic diagram of the mobile tooling structure in an embodiment of the present application;

[0039] Figure 13 This is a schematic structural diagram of the first hinge in an embodiment of the present application;

[0040] Figure 13 In the middle, the first leaf 2021, the first connecting bolt 2022, the hinge shaft 2023, the second leaf 2024, and the second connecting bolt 2025;

[0041] Figure 14 This is a schematic structural diagram of the hinge shaft in the embodiment of the present application;

[0042] Figure 14 Among them, oil nozzle 20231, annular oil groove 20232, wear-resistant copper pad 20233, nut 20234, oil outlet hole 20235, gasket 20236.

[0043] Figure 15 This is a first schematic diagram of the structure of the longitudinal moving assembly in an embodiment of the present application;

[0044] Figure 15 In the middle, the longitudinal motor 2031, the speed reducer 2032, the coupling 2033, the first mounting seat 2034, the spur gear 2035, and the first roller 2036;

[0045] Figure 16 This is a second schematic diagram of the structure of the longitudinal moving assembly in an embodiment of the present application;

[0046] Figure 16 Among them, angular contact bearings 2037, deep groove ball bearings 2038;

[0047] Figure 17 This is a schematic structural diagram of the second roller assembly in an embodiment of the present application;

[0048] Figure 17 Middle, second roller 2082, second roller mounting seat 2081;

[0049] Figure 18 This is a first schematic diagram of the structure of the AGV walking mechanism in an embodiment of the present application;

[0050] Figure 18 In the middle, the fixed seat 303, the driving wheel group 304, the fixed block 305, the intermediate shaft 306, the connecting end block 307, and the heavy-duty caster 308;

[0051] Figure 19 This is a second schematic diagram of the structure of the AGV walking mechanism in an embodiment of the present application;

[0052] Figure 20 This is a structural diagram of the fixed seat plate in an embodiment of the present application;

[0053] Figure 21 This is a structural diagram of the connecting end block in an embodiment of the present application;

[0054] Figure 21 In the middle, the fixed seat body 309, the torque rubber sleeve 3010, and the adjustment gasket 3011

[0055] Figure 22 This is a structural diagram of the car chassis placed on the AGV body in this application. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0059] See also Figures 1-9 The figure shows an embodiment structure provided by the present invention.

[0060] This embodiment provides an AGV for automobile chassis installation, comprising an AGV body 1 and a fixed tooling 2 and a mobile tooling 3 mounted on the upper end surface of the AGV body 1 for use in automobile chassis assembly.

[0061] The fixed tooling is fixedly mounted on one end of the upper end surface of the AGV body, and the movable tooling is mounted on the upper end surface of the AGV body through a moving mechanism and can move on the upper end surface of the AGV body, thereby adjusting the distance between the fixed tooling and the movable tooling;

[0062] The fixed tooling and the movable tooling each include a right clamping unit and a left clamping unit arranged in a symmetrical structure. When assembling the automobile chassis, the right clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam, and the left clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam.

[0063] It should be noted that a support frame 4 is also installed on the upper end surface of the AGV body to assist in supporting the vehicle chassis assembly.

[0064] In a preferred embodiment, it further includes a bottom mounting plate 104 connected to the upper end surface of the AGV, and the right gripper unit 102 and the left gripper unit 103 are mounted on the bottom mounting plate 104;

[0065] The right clamping unit 102 includes a base plate 1026, a clamping mounting frame 1028, a workpiece-carrying U-shaped force arm 1025, and a swing arm hydraulic cylinder 10211. The base plate 1026 is installed on the bottom mounting plate 104, and the clamping mounting frame 1028 is installed on the base plate 1026. The workpiece-carrying U-shaped force arm 1025 is installed on the inner side of the clamping mounting frame 1028. The middle part of one side is hingedly connected to the clamping mounting frame 1028 through the main force axis 1029, and the lower part is hingedly connected to the piston rod end of the swing arm hydraulic cylinder 10211 through the secondary force axis 10212. The swing arm hydraulic cylinder 10211 is connected to the clamping mounting frame 1028 through the hydraulic cylinder fixed seat bearing 10210. The piston rod of the swing arm hydraulic cylinder 10211 is extended and retracted to drive the workpiece-carrying U-shaped force arm 1025 to swing around the main force axis 1029.

[0066] It should be noted that the right clamping jaw unit 102 and the left clamping jaw unit 103 are symmetrically arranged in structure. Therefore, the structure of the left clamping jaw unit 103 will not be described in detail here. Its structure refers to the structural description of the right clamping jaw unit 102.

[0067] The automobile chassis in this application primarily comprises two parallel, spaced-apart longitudinal beams, and a plurality of crossbeams and sub-plates connected therebetween. When using this application, the two longitudinal beams are supported and fixed by the workpiece-carrying U-shaped levers of the right clamping unit 102 and the left clamping unit 103, respectively, and locked with chains to prevent them from tilting. Driven by the swing arm hydraulic cylinder, the U-shaped levers can tilt to a preset angle, completing the installation of the crossbeam between the two longitudinal beams. Using this application installed on an AGV, it is possible to effectively support and install the automobile chassis.

[0068] In a preferred embodiment, a locking chain 1024 is installed on the workpiece-carrying U-shaped arm 1025, one end of the locking chain 1024 is connected to the first side wall of the workpiece-carrying U-shaped arm 1025, and the other end is connected to a manual hand clamp 1023 installed on the second side wall of the workpiece-carrying U-shaped arm 1025.

[0069] When in use, first place the automobile chassis longitudinal beam into the U-shaped arm that carries the workpiece, and then use the chain to lock the U-shaped arm that carries the workpiece.

[0070] In addition, to accommodate various vehicle chassis models, a height-adjustable chain adjustment frame 1021 is mounted on the top of the second side wall of the workpiece-carrying U-shaped arm 1025. The locking chain 1024 passes over the top of the chain adjustment frame 1021, and the height of the chain adjustment frame 1021 is adjusted according to the size of the component. It should be noted that the specific structure of the chain adjustment frame 1021 can be adopted from the prior art or the structure of the present application. The chain adjustment frame 1021 of the present application includes a transversely disposed spool and a longitudinally disposed threaded rod. The threaded rod is threadedly connected to a locking nut. The top of the threaded rod is connected to the spool, and the lower end of the threaded rod is threadedly connected to the top of the second side wall.

[0071] In a preferred embodiment, a U-shaped groove block is installed on one side of the second side wall of the workpiece-bearing U-shaped lever arm 1025. A workpiece positioning handle 1022 for fixing the vehicle chassis longitudinal beam of the vehicle chassis is detachably installed in the U-shaped groove of the U-shaped groove block. By providing this structure, the vehicle chassis longitudinal beam can be positioned and limited, improving operational safety. In addition, this embodiment provides a specific structure of the workpiece positioning handle 1022, which comprises, from the inside to the outside, a plug-in portion, a threaded connection portion, a clamping portion, and a handle portion. The plug-in portion is used to insert into the opening on the vehicle chassis. The threaded connection portion is connected to a locking nut for fixing the workpiece positioning handle 1022 on the U-shaped groove block. The clamping portion is clamped into the U-shaped groove of the U-shaped groove block. This structure can achieve the limitation of the vehicle chassis longitudinal beam.

[0072] In a preferred embodiment, in order to be applicable to different models of automobile chassis, the automobile chassis installation fixture of the present application further includes a first transverse drive motor 101 mounted on the bottom mounting plate 104, and rack plates 1027 are respectively mounted on the base plates 1026 of the right clamping jaw unit 102 and the left clamping jaw unit 103. The output shaft of the first transverse drive motor 101 is connected to a drive gear, and the drive gear is respectively connected to the right clamping jaw unit 102 and the left clamping jaw unit 103. The rotation of the drive gear drives the right clamping jaw unit 102 and the left clamping jaw unit 103 to move toward or in opposite directions. This structure can adjust the distance between the right clamping jaw unit 102 and the left clamping jaw unit 103.

[0073] It should be noted that the first transverse drive motor 101 is mounted on the bottom mounting plate 104 via a motor base. Rack plate protection structures are connected to both sides of the motor base. The rack plate protection structure includes a fixed dustproof plate 1013 connected to the motor base on one side. Each fixed dustproof plate 1013 is slidably connected to a sliding dustproof plate 1011 via a guide rail 1012. The sliding dustproof plate 1011 and the rack plate are both connected to the base plate 1026 of the right or left clamping jaw unit. When the rack plate moves, the sliding dustproof plate also moves. The rack plate protection structure shields the rack plate below to prevent screws and other parts from falling onto it.

[0074] like Figures 10 to 17 Shown is the structure of a mobile tooling embodiment of the present application.

[0075] Figure 10 It is a top view of the tooling; Figure 11 It is a schematic diagram of the three-dimensional structure; Figure 12 It is a schematic diagram of the bottom structure of the tooling; Figure 13 is a schematic diagram of the hinge structure, such as Figure 10-13 As shown, the mobile tooling in this embodiment includes a bottom mounting plate connected to the upper end surface of the AGV, a right clamping unit and a left clamping unit symmetrically mounted on the bottom mounting plate for supporting the longitudinal beam of the automobile chassis, which can support the longitudinal beam of the automobile chassis and perform operations such as flipping. It should be noted that the structural difference between the mobile tooling and the fixed tooling lies in the mobile mechanism, and other structures, such as the right clamping unit and the left clamping unit, the bottom mounting plate, etc. are the same. Please refer to the above-mentioned structure of the fixed tooling and will not be described again here.

[0076] The moving mechanism includes a second hinge 210 and a first hinge 202 with the same structure installed at the front and rear ends of the left side of the bottom mounting plate, respectively. The second hinge 210 and the first hinge 202 both include a first leaf 2021 and a second leaf 2024, and a hinge shaft 2023 for connecting the first leaf 2021 and the second leaf 2024. The bottom mounting plate below the first hinge 202 and the second hinge 210 is provided with a first through hole for the second leaf 2024 to pass through. The first leaf 2021 is connected to the bottom mounting plate, and a slider is installed at the lower end of the second leaf 2024. The two second leafs 2024 are slidably connected to the longitudinal guide rail 201 installed on the upper end surface of the AGV through the slider.

[0077] When the AGV body and the bottom mounting plate move relative to each other and when there are machining errors on the parts on both sides of the movable tooling that affect the movement, the second leaf 2024 can rotate around the hinge axis by a certain angle, thereby effectively overcoming the above problems.

[0078] The bottom mounting plate further includes a longitudinal moving assembly 203 and a second roller assembly 208 for providing moving power for the moving tooling, which are respectively installed at the front and rear ends of the right side of the bottom mounting plate. A second through hole is provided on the bottom mounting plate below the longitudinal moving assembly 203 and the second roller assembly 208. The longitudinal moving assembly 203 includes a longitudinal motor 2031, a reducer 2032, a coupling 2033, a first mounting seat 2034, a spur gear 2035, and a first roller 2036. The longitudinal motor 2031 is connected to the reducer 2032, and the reducer 2032 is connected to the first transmission shaft through the coupling 2033. The spur gear 2035 and the first roller 2036 are coaxially installed side by side on the first transmission shaft. The two ends of the first transmission shaft are respectively connected to the two shaft mounting blocks on the first mounting seat 2034, and the first mounting seat 2034 is connected to the bottom mounting plate; the second roller assembly 208 includes a second roller 2082 and a second roller mounting seat 2081, and the second roller 2082 is connected to the two shaft mounting blocks on the second roller mounting seat 2081 through the second transmission shaft; the spur gear 2035 is meshed and connected with the spur rack 204 installed on the upper end face of the AGV, and the support block 205 arranged parallel to the spur rack is installed on the upper end face of the AGV below the first roller 2036 and the second roller 2082, and both the first roller 2036 and the second roller 2082 can move on the support block 205.

[0079] During use, the longitudinal motor drives the spur gear to rotate, causing it to move on the spur rack, thereby driving the entire movable tooling to move. The two hinges are slidably connected to the longitudinal guide rails. This application uses this movable mechanism to replace the traditional mechanism that uses sliders and guide rails on both sides. This effectively overcomes the problem of movement jamming caused by workpiece machining errors, deformation of the bottom mounting plate, and slight deformation of the vehicle body, thereby extending the service life of the sliders and guide rails.

[0080] In a preferred embodiment, the hinge shaft 2023 includes a shaft rod, which is a hollow structure with an oil storage cavity inside. The shaft rod is divided into multiple connection areas for connecting with the first page 2021 and the second page 2024 by spacers. An annular oil groove 20232 is provided in the middle of each connection area along the circumferential surface of the shaft rod. An oil outlet hole 20235 connecting the inside and outside of the oil storage cavity is provided in the annular oil groove 20232. An oil filling hole for oil filling is provided at the first side end of the oil rod, and an external thread is provided at the second side end, which is connected to the nut 20234 through the external thread. The oil filling hole is connected to the oil nozzle 20231.

[0081] The hinge shaft can inject lubricating oil into the oil storage cavity through the oil filling hole, and then discharge the lubricating oil into the annular oil groove through the oil outlet hole, so that the lubricating oil is more evenly distributed to the parts where it needs to be added, and is less likely to cause lubricating oil leakage, thereby achieving better use effect. The oil nozzle can be blocked by a component in the prior art.

[0082] In a preferred embodiment, both ends of the first transmission shaft are connected to two shaft mounting blocks on the first mounting seat 2034 via an angular contact bearing 2037 respectively.

[0083] In a preferred embodiment, both ends of the second transmission shaft are connected to the two shaft mounting blocks on the second roller mounting seat 2081 via an angular contact bearing. The first roller and the second roller are connected to their respective transmission shafts via deep groove ball bearings.

[0084] like Figures 18 to 21 Shown is the structure of an embodiment of the present application.

[0085] In this embodiment, the AGV further includes two sets of AGV walking mechanisms disposed at both ends of the lower end surface of the AGV body, each set of walking mechanisms including a fixed seat 303, a driving wheel set 304 and a heavy-duty caster 308;

[0086] The driving wheel group 304 is installed on the side of the fixed seat 303 close to the AGV front, and the heavy-duty caster 308 is installed on the side of the fixed seat 303 away from the AGV front. On the fixed seat 303, a fixed block 305 is provided between the driving wheel group 304 and the heavy-duty caster 308. The intermediate shaft 306 passes through the fixed block 305 and the two are fixedly connected. The two ends of the intermediate shaft 306 are respectively rotatably connected to a connecting end block 307. The connecting end block 307 is connected to the AGV body. There is a gap between the upper end surface of the fixed seat 303 and the AGV body.

[0087] The structure provided by this embodiment effectively prevents slipping during AGV operation. When encountering uneven surfaces, hills, or other road conditions, the traveling mechanism pivots around the intermediate shaft, and the heavy-duty casters and drive wheels can freely tilt up and down (similar to a seesaw) as road conditions change. This effectively prevents slipping and sagging, improving driving stability and reliability. Furthermore, torsion rubber sleeves (capable of withstanding loads exceeding 10 tons) are installed inside the connecting end blocks.

[0088] It should be noted that the driving wheel assembly of the present invention is a component in the prior art, including a driving motor and a driving wheel connected to the driving motor, and its structure will not be described in detail here.

[0089] The heavy-duty caster is also a component in the prior art. A bearing assembly is installed inside the heavy-duty caster to ensure 360-degree rotation and strong bearing capacity.

[0090] In a preferred embodiment, there are two heavy-duty casters 308 , and the two heavy-duty casters 308 are symmetrically arranged on the left and right.

[0091] In a preferred embodiment, there are two fixing blocks 305 , and the two fixing blocks 305 are symmetrically arranged on the left and right.

[0092] In a preferred embodiment, the connecting end block 307 includes a fixing seat body 309, a torsion rubber sleeve 3010, and an adjusting gasket 3011. The torsion rubber sleeve 3010 is installed in the fixing hole of the fixing seat body 309. The intermediate shaft 306 is rotatably connected to the torsion rubber sleeve 3010. The fixing seat body 309 is connected to the AGV body, and an adjusting gasket 3011 is arranged between the two.

[0093] It should be noted that the torsion rubber sleeve is a component used on heavy-load equipment. When in use, it is squeezed and deformed by force, bearing the load while also bearing the deformation.

[0094] Figure 22 Shown is a schematic diagram of the structure in which the car chassis is placed on the AGV body in this application.

[0095] In addition, the present invention also provides a method for installing an automobile chassis, wherein the method uses the above-mentioned AGV for installing an automobile chassis;

[0096] The method comprises the following steps:

[0097] Step 1: Use the lifting mechanism to lift the first chassis longitudinal beam and place it on the right clamp unit or left clamp unit on the same side of the fixed tooling and the movable tooling. Connect one end of the chain hook to the manual hand clamp to lock the chassis longitudinal beam.

[0098] Step 2: Use the lifting mechanism to lift the second chassis longitudinal beam and place it on the left clamp unit or the right clamp unit on the same side of the fixed tooling and the movable tooling. Connect one end of the chain hook to the manual hand clamp to lock the chassis longitudinal beam.

[0099] Step 3: All left and right gripper units are simultaneously opened to a preset angle upward and outward, so that the longitudinal beam of the vehicle chassis is tilted;

[0100] Step 4: Use the lifting mechanism to sequentially lift multiple cross beams and fix them to the first automobile chassis longitudinal beam or the second automobile chassis longitudinal beam in turn;

[0101] Step 5: All left gripper units and right gripper units rotate back to their original positions at the same time, and fix the first automobile chassis longitudinal beam or the second automobile chassis longitudinal beam that has been assembled with the cross beam and the unassembled second automobile chassis longitudinal beam or the first automobile chassis longitudinal beam. Finally, the entire automobile chassis is placed horizontally on the fixed tooling and the movable tooling, and the automobile chassis is lifted away by the crane mechanism.

[0102] It should be noted that the hoisting mechanism can use a crane. The preset angle can be 30 degrees.

[0103] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An AGV for automobile chassis installation, characterized in that: It includes the AGV body and the fixed tooling and mobile tooling installed on the upper end surface of the AGV body and used for automobile chassis assembly; The fixed tooling is fixedly mounted on one end of the upper end surface of the AGV body, and the movable tooling is mounted on the upper end surface of the AGV body through a moving mechanism and can move on the upper end surface of the AGV body, thereby adjusting the distance between the fixed tooling and the movable tooling; The fixed tooling and the movable tooling each include a right clamping unit and a left clamping unit that are symmetrically arranged. When assembling the automobile chassis, the right clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam, and the left clamping units of the fixed tooling and the movable tooling jointly fix one automobile chassis longitudinal beam. The fixed tooling and the mobile tooling both include a bottom mounting plate (104) connected to the upper end surface of the AGV, the right clamping unit and the left clamping unit are mounted on the bottom mounting plate (104), the right clamping unit includes a base plate (1026), a clamping mounting frame (1028), a workpiece-carrying U-shaped force arm (1025), and a swing arm hydraulic cylinder (10211), the base plate (1026) is mounted on the bottom mounting plate (104), the clamping mounting frame (1028) is mounted on the base plate (1026), and the workpiece-carrying U-shaped force arm (1025) is mounted on the base plate (10211). It is mounted on the inner side of the clamping jaw mounting frame (1028), and the middle part of one side is hingedly connected to the clamping jaw mounting frame (1028) through the main force-bearing shaft (1029), and the lower part is hingedly connected to the piston rod end of the swing arm hydraulic cylinder (10211) through the secondary force-bearing shaft (10212). The swing arm hydraulic cylinder (10211) is connected to the clamping jaw mounting frame (1028) through the hydraulic cylinder fixed seat bearing (10210). The piston rod of the swing arm hydraulic cylinder (10211) is extended and retracted to drive the workpiece-carrying U-shaped force arm (1025) to swing around the main force-bearing shaft (1029); The moving mechanism comprises a second hinge (210) and a first hinge (202) of the same structure, which are respectively installed at the front and rear ends of the left side of the bottom mounting plate. The second hinge (210) and the first hinge (202) both comprise a first leaf (2021) and a second leaf (2024) and a hinge shaft (2023) for connecting the first leaf (2021) and the second leaf (2024). A first through hole for the second leaf (2024) to pass through is provided on the bottom mounting plate below the second leaf (2024) of the first hinge (202) and the second hinge (210). The first leaf (2021) is connected to the bottom mounting plate. A slider is installed at the lower end of the second leaf (2024). The two second leaves (2024) are slidably connected to the longitudinal guide rail (201) installed on the upper end surface of the AGV through the slider.

2. The AGV for automobile chassis installation according to claim 1, characterized in that: A locking chain (1024) is installed on the workpiece-carrying U-shaped arm (1025), one end of the locking chain (1024) is connected to the first side wall of the workpiece-carrying U-shaped arm (1025), and the other end is connected to a manual hand clamp (1023) installed on the second side wall of the workpiece-carrying U-shaped arm (1025).

3. The AGV for automobile chassis installation according to claim 2, characterized in that: A chain adjustment frame (1021) capable of adjusting height is installed at the top of the second side wall of the workpiece-carrying U-shaped arm (1025), and the locking chain (1024) passes around the top of the chain adjustment frame (1021).

4. The AGV for automobile chassis installation according to claim 3, characterized in that: A U-shaped groove block is installed on one side of the second side wall of the workpiece-carrying U-shaped lever arm (1025), and a workpiece positioning handle (1022) for fixing the automobile chassis is detachably installed in the U-shaped groove of the U-shaped groove block.

5. The AGV for automobile chassis installation according to claim 1, characterized in that: The invention also includes a first transverse driving motor (101) mounted on the bottom mounting plate (104), and rack plates (1027) are respectively mounted on the base plates (1026) of the right clamping jaw unit (102) and the left clamping jaw unit (103). The output shaft of the first transverse driving motor (101) is connected to a driving gear, and the driving gear is respectively connected to the right clamping jaw unit (102) and the left clamping jaw unit (103) in a transmission manner, and the right clamping jaw unit (102) and the left clamping jaw unit (103) are driven to move toward or in opposite directions by the rotation of the driving gear.

6. The AGV for automobile chassis installation according to claim 1, characterized in that: The invention also includes a longitudinal moving assembly (203) and a second roller assembly (208) respectively installed at the front and rear ends of the right side of the bottom mounting plate, a second through hole is opened on the bottom mounting plate below the longitudinal moving assembly (203) and the second roller assembly (208), the longitudinal moving assembly (203) includes a longitudinal motor (2031), a reducer (2032), a coupling (2033) and a first mounting seat (2034), a spur gear (2035), and a first roller (2036), the longitudinal motor (2031) is connected to the reducer (2032), and the reducer (2036) is connected to the first roller (2036). 032) is connected to the first transmission shaft through a coupling (2033); a spur gear (2035) and a first roller (2036) are coaxially mounted side by side on the first transmission shaft; both ends of the first transmission shaft are respectively connected to two shaft mounting blocks on a first mounting seat (2034); the first mounting seat (2034) is connected to the bottom mounting plate; the second roller assembly (208) includes a second roller (2082) and a second roller mounting seat (2081); the second roller (2082) is connected to the two shaft mounting blocks on the second roller mounting seat (2081) through the second transmission shaft; The spur gear (2035) is meshedly connected with a spur rack (204) mounted on the upper end surface of the AGV, and the support block (205) is mounted on the upper end surface of the AGV below the first roller (2036) and the second roller (2082), and both the first roller (2036) and the second roller (2082) are capable of moving on the support block (205).

7. The AGV for automobile chassis installation according to claim 6, characterized in that: The hinge shaft (2023) includes a shaft rod, which is a hollow structure with an oil storage cavity inside. The shaft rod is divided into multiple connection areas for connecting with the first leaf (2021) and the second leaf (2024) by a spacer. An annular oil groove (20232) is provided in the middle of each connection area along the circumferential surface of the shaft rod. An oil outlet hole (20235) communicating with the inside and outside of the oil storage cavity is provided in the annular oil groove (20232). An oil filling hole for filling oil is provided at the first side end of the oil rod, and an external thread is provided at the second side end, which is connected to the nut (20234) via the external thread.

8. The AGV for automobile chassis installation according to claim 1, characterized in that: It also includes two sets of AGV walking mechanisms arranged at both ends of the lower end surface of the AGV body, each set of walking mechanisms including a fixed seat (303), a driving wheel set (304) and a heavy-load caster (308); The driving wheel group (304) is mounted on the side of the fixing seat (303) close to the front of the AGV, and the heavy-load caster (308) is mounted on the side of the fixing seat (303) away from the front of the AGV. A fixing block (305) is provided on the fixing seat (303) between the driving wheel group (304) and the heavy-load caster (308). An intermediate shaft (306) passes through the fixing block (305) and the two are fixedly connected. Both ends of the intermediate shaft (306) are rotatably connected to a connecting end block (307), and the connecting end block (307) is connected to the AGV body. A gap is provided between the upper end surface of the fixing seat (303) and the AGV body.

9. A method for installing an automobile chassis, characterized in that: The method uses an AGV for automobile chassis installation according to any one of claims 1 to 8; The method comprises the following steps: Step 1: Use the lifting mechanism to lift the first automobile chassis longitudinal beam and place it on the right clamping unit or left clamping unit on the same side of the fixed tooling and the movable tooling; Step 2: Use the lifting mechanism to lift the second automobile chassis longitudinal beam and place it on the left clamping unit or the right clamping unit on the same side of the fixed tooling and the movable tooling; Step 3: All left and right gripper units are simultaneously opened to a preset angle upward and outward, so that the longitudinal beam of the vehicle chassis is tilted; Step 4: Use the lifting mechanism to sequentially lift multiple cross beams and fix them to the first automobile chassis longitudinal beam or the second automobile chassis longitudinal beam in turn; Step 5: All left gripper units and right gripper units rotate back to their original positions at the same time, and fix the first automobile chassis longitudinal beam or the second automobile chassis longitudinal beam with the assembled cross beam to the second automobile chassis longitudinal beam or the first automobile chassis longitudinal beam. Finally, the entire automobile chassis is placed horizontally on the fixed tooling and the movable tooling, and the automobile chassis is lifted away by the crane mechanism.

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