White body multi-vehicle flexible switching transfer trolley

Abstract

The utility model discloses a body -in -white multiple vehicle type flexible switching transfer trolley, it includes a car body, the car body contains a chassis, a plurality of sets of support limiting mechanism, and each set of support limiting mechanism contains a support seat, and a plurality of sets of support locking assembly, and each set of support locking assembly corresponds a set of support limiting mechanism, and the support locking assembly includes a support box fixed in the chassis, the support seat is pivotally connected in the support, the support locking assembly still includes a pull pin and a bolt locking assembly, wherein, the pull pin is detachably worn between the support box and the support seat, and the bolt locking assembly is loose and acts on the support seat, to make the support seat with the support box remove the locking and overturn and lay flat, the utility model discloses can safely, stable, high -efficiently compatible multiple vehicle type body -in -white transfer operation's general equipment.

Description

Technical Field

[0001] The utility model belongs to the field of body-in-white processing technology, and specifically discloses a flexible switching and transfer trolley for body-in-white of multiple models. Background Technology

[0002] In today's increasingly competitive automotive manufacturing industry, the market is placing ever more stringent demands on product development speed and cost control. To improve process efficiency and production flexibility, mixed-line production models with small batches and diverse product types are gradually becoming an industry trend. Flexible manufacturing systems are therefore widely used in the automotive industry. Through the combination of information control systems, material handling systems, and digital processing equipment, production lines can flexibly switch between different types of products, thereby improving equipment utilization, shortening delivery cycles, and ensuring product quality.

[0003] The body-in-white, as the basic skeleton of a car, plays a crucial role in its manufacturing and transportation. However, the unique structural characteristics of the body-in-white often lead to the specialization of its transportation tools. In traditional production models, dedicated transportation tools need to be designed and manufactured for different car models. This not only results in high investment costs and long manufacturing cycles but also creates significant warehousing pressure.

[0004] To address these issues, the industry has developed several universal body-in-white transfer trolleys. However, most widely used universal transfer trolleys currently employ simplified structural designs, such as eliminating fixing devices and relying solely on simple support structures to support the body-in-white. While this design achieves a degree of versatility, it also introduces new problems. During transportation, especially over long distances between factory areas, road bumps and vibrations can easily cause the body-in-white to shift or even collide with the transfer trolley, resulting in damage and quality risks. Furthermore, during the process of replacing support modules to adapt to different vehicle models, there is a risk of some support limiting mechanisms being lost, which directly affects the continuity and stability of production.

[0005] Therefore, developing a universal transport vehicle that can be compatible with the body-in-white of various car models, ensure stability and safety during transportation, and effectively reduce costs and increase reusability has become a technical challenge that the automotive manufacturing industry urgently needs to solve. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a flexible switching and transfer trolley for body-in-white vehicles of various models. This transfer trolley aims to solve the quality risks of displacement and damage to body-in-white vehicles during transportation caused by insecure fixing in existing general-purpose transfer trolleys, as well as the problems of high investment costs, poor versatility, heavy warehousing pressure, and easy loss of switching modules in dedicated transfer trolleys. This invention, through ingenious mechanical structure design, realizes a universal device that can safely, stably, and efficiently handle the transfer of body-in-white vehicles of various models.

[0007] This utility model discloses a flexible switching transfer trolley for multiple body-in-white models, including a vehicle body comprising a chassis; multiple sets of support and limiting mechanisms, each set of support and limiting mechanisms including a support seat; and multiple sets of support and locking assemblies, each set of support and locking assemblies corresponding to a set of support and limiting mechanisms. Each support and locking assembly includes a support box fixed to the chassis; the support seat is rotatably connected to the support box; the support and locking assembly further includes a pull pin and a bolt locking assembly, the pull pin and the bolt locking assembly being arranged perpendicularly to each other, the bolt locking assembly being fixed to the support seat, and the bolt locking assembly being rotatably connected to the support box. The pull pin is used to restrict the rotation of the bolt locking assembly; the pull pin includes a body portion, the end face of which is provided with a guide groove coaxially arranged therewith, and the outer peripheral surface of the body portion is provided with multiple ball bearing mounting holes extending radially through it. The ball mounting holes are arranged symmetrically along the central axis of the main body. The ball mounting holes and the guide groove are connected. A steel ball is provided in the ball mounting hole. The spherical part of the steel ball in the ball mounting hole is higher than the outer peripheral surface of the main body. A pin is provided in the guide groove. The guide groove and the pin are shaped correspondingly. A pressure is provided at the bottom of the pin groove. The pin contacts the pressure spring. A pressure head for loading the pin is provided at the end of the guide groove. The pressure head contacts the pressure spring. An annular groove for accommodating the steel ball is provided on the outer peripheral surface of the pin. When the annular groove corresponds to the ball mounting hole, the steel ball (33.4) can be displaced radially along the main body. A pin hole corresponding to the shape of the main body is provided on the outer peripheral surface of the bolt locking assembly. A slot is provided on the inner wall of the pin hole that corresponds to the steel ball. A through hole is provided on the support box and the support base for the pin to be disassembled and inserted.

[0008] Preferably, the vehicle body further includes multiple casters mounted on the bottom and a trailer bracket connected to the chassis.

[0009] Preferably, the support base includes at least one first limiting stop and at least one second limiting stop block, wherein both the first limiting stop block and the second limiting stop block are square block structures.

[0010] Preferably, the support base includes at least one third limiting block and at least one fourth limiting block, both of which are L-shaped block structures.

[0011] Preferably, the support base includes at least one fifth limiting block and at least one sixth limiting block, both of which are double L-shaped block structures.

[0012] Preferably, the surface of the first to sixth limiting blocks that contacts the body-in-white is provided with an elastic buffer layer.

[0013] Preferably, the support box is a square channel steel structure with a through slot that matches the lower end of the support base. Preferably, the lower end of the support base in the upright locked state is located in the through slot, the outer side of the support base contacts the bottom of the through slot, and the front and rear end faces of the support base contact the walls of the through slot, respectively.

[0014] Preferably, the bottom of the support base has rounded corners.

[0015] Preferably, the pin body of the pull pin is provided with a spring and a ball bearing.

[0016] The beneficial effects of this utility model are as follows: By designing multiple sets of flip-up support seats suitable for different vehicle models, this utility model achieves extremely high flexibility and versatility for multiple uses within a single vehicle. When a specific vehicle model needs to be adapted, the corresponding support seat only needs to be erected and fixed using a triple locking mechanism consisting of a support box, pull pin, and bolt locking assembly. This structure ensures that the body-in-white is precisely positioned and locked in the front-to-back, left-to-right, and up-down directions after placement, fundamentally solving the persistent problem of quality issues and safety risks caused by unstable fixing during transportation in existing technologies. More importantly, all support seats are permanently connected to the vehicle body through a pivot structure, eliminating the need to disassemble or replace any modules when switching vehicle models. This completely eliminates the risk of easily lost parts in traditional replaceable modular transport carts, which could affect production continuity. In summary, this utility model integrates high flexibility, high stability, and high reliability. Its multi-purpose design not only significantly reduces the total investment in transport tools and tooling manufacturing cycle but also greatly saves valuable storage space, providing enterprises with a practical and effective technical solution for cost reduction and efficiency improvement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0018] Figure 1This is a schematic diagram of the overall structure of a flexible switching and transfer trolley for multiple vehicle body-in-white models, as described in an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the vehicle body in an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the layout of different types of support seats on the chassis in the embodiments of this utility model, showing the layout of various limiting blocks.

[0021] Figure 4 This is a partially enlarged structural diagram of a single support locking component fixing the support base in an upright state in an embodiment of this utility model.

[0022] Figure 5 This is a side view of the supporting locking component in an embodiment of the present invention.

[0023] Figure 6 This is a front view of the supporting locking component in an embodiment of this utility model.

[0024] Figure 7 This is a rear view of the supporting locking component in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the pin removal in an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the assembly of the pin puller and bolt locking assembly in an embodiment of this utility model.

[0027] Figure 10 This is a top view of the assembly of the pin-pulling and bolt-locking components in an embodiment of this utility model.

[0028] Figure 11 This is a schematic diagram of the pin removal in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1-Vehicle body; 11-Chassis; 12-Cast wheel; 13-Trailer bracket; 2-Support limiting mechanism; 21-First limiting block; 22-Second limiting block; 23-Third limiting block; 24-Fourth limiting block; 25-Fifth limiting block; 26-Sixth limiting block; 3-Support locking assembly; 31-Support box; 32-Bolt locking assembly; 33-Pin; 33.1-Main body; 33.2-Guide groove; 33.3-Ball bearing mounting hole; 33.4-Steel ball; 33.5-Pin; 33.6-Compression spring; 33.7-Pressure head. Detailed Implementation

[0030] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 11 This utility model provides a flexible switching transfer trolley for multiple vehicle models with a body-in-white, characterized in that it includes a vehicle body 1, the vehicle body 1 including a chassis 11; multiple sets of support and limiting mechanisms 2, each set of support and limiting mechanisms 2 including a support seat; and multiple sets of support and locking components 3, each set of support and locking components 3 corresponding to a set of support and limiting mechanisms 2. The support and locking component 3 includes a support box 31 fixed to the chassis 11; the support seat is rotatably connected to the support box 31; the support and locking component 3 also includes a pull pin 33 and a bolt locking component 32, the pull pin 33 and the bolt locking component 32 are arranged perpendicular to each other, the bolt locking component 32 is fixed to the support seat, and the bolt locking component 32 is rotatably connected to the support box 31, the pull pin 33 is used to restrict the rotation of the bolt locking component 32. The pull pin 33 includes a body part 33.1. The end face of the body part 33.1 is provided with a guide groove 33.2 coaxially disposed therewith. The outer peripheral surface of the body part 33.1 is provided with a plurality of ball mounting holes 33.3 that penetrate radially therethrough. The plurality of ball mounting holes 33.3 are arranged symmetrically around the central axis of the body part 33.1. The ball mounting holes 33.3 and the guide groove 33.2 are connected. A steel ball 33.4 is disposed in the ball mounting hole 33.3. The spherical surface of the steel ball 33.4 located in the ball mounting hole 33.3 is higher than the outer peripheral surface of the body part 33.1. A pin 33.5 is provided within the guide groove 33.2. The guide groove 33.2 and the pin 33.5 correspond in shape. A compression spring 33.6 is provided at the bottom of the pin 33.5, and the pin 33.5 contacts the compression spring 33.6. A pressure head 33.7 for loading the pin 33.5 is provided at the end of the guide groove 33.2, and the pressure head 33.7 contacts the compression spring 33.6. An annular groove for accommodating a steel ball 33.4 is provided on the outer circumferential surface of the pin 33.5. When the annular groove corresponds to the ball mounting hole 33.3, the steel ball 33.4 can be radially displaced along the body part 33.1. A pin hole corresponding to the shape of the body part 33.1 is provided on the outer circumferential surface of the bolt locking assembly 32. The inner wall of the pin hole is provided with a slot corresponding to the steel ball 33.4. The support box 31 and the support base are provided with through holes for the pull pin 33 to be disassembled and inserted.

[0032] Based on the above structure, the specific composition of the vehicle body 1 includes a chassis 11 with a rectangular frame structure welded from structural steel, which provides a mounting base for all other components. Multiple casters 12 are installed at the four corners and center of the bottom of the chassis 11, allowing the vehicle to be easily pushed manually over short distances. A trailer support 13 is also welded to one end of the chassis 11, which can be connected to a tractor for transport operations between factory areas or over longer distances. The support and limiting mechanism 2 is key to achieving flexible switching. Multiple sets of different support and limiting mechanisms 2 are strategically arranged on the top of the chassis 11 according to the chassis positioning points of various target vehicle models. Each support and limiting mechanism 2 consists of a support base with different limiting block structures to match different vehicle body positioning requirements. These include a first limiting block 21 and a second limiting block 22, which are square blocks used for positioning a frame or plane on the bottom of the body-in-white in the XYZ three-axis directions; a third limiting block 23 and a fourth limiting block 24, which are L-shaped blocks and mainly used to engage with the side skirts or side beams of the body-in-white to restrict the lateral movement of the body-in-white in the Y direction; and a fifth limiting block 25 and a sixth limiting block 26, which are double L-shaped blocks and can provide more complex positioning, such as simultaneously limiting the inner and outer sides of the body-in-white side skirts. To protect the paint of the body-in-white, an elastic buffer layer is provided on all the surfaces of these limiting blocks that will contact the body-in-white, effectively avoiding scratches and indentations caused by rigid contact. The support locking assembly 3 is the core component ensuring support stability. Each support base is connected to the chassis 11 via a support locking assembly 3. The support box 31 is preferably a section of square channel steel, which is firmly fixed to the top of the chassis 11 and has a through slot with a size that matches the lower end of the support base. The lower end of the support base is pivotally connected to the support box 31 via a pin, allowing it to be rotated. To avoid interference, the bottom of the support base has a rounded corner design.

[0033] The working process and principle of this utility model are as follows: When a specific support base is needed, the operator flips it upwards to an upright position, and its lower end falls into the through groove of the support box 31, achieving initial positioning. Subsequently, the operator inserts the pull pin 33 through the pre-set through hole in the side wall of the support box 31 and the lower end of the support base. The pull pin 33 is a quick-lock structure, and its insertion and locking process is as follows: Pressing the pressure head 33.7 at the tail of the pull pin displaces the internal pin 33.5, aligning its annular groove with the steel ball 33.4, causing the steel ball to retract, and the pull pin can be easily inserted; after releasing the pressure head, the compression spring 33.6 pushes the pin back to its original position, pushing the steel ball out and locking it into the external slot, achieving axial locking. The unlocking and pulling process is as follows: When it is necessary to pull out, press the pressure head 33.7 again, the pin moves, its annular groove corresponds to the ball mounting hole 33.3, the steel ball 33.4 obtains inward movement space and retracts back into the annular groove along the radial direction of the body part 33.1, the lock is released, and the pin 33 can be pulled out.

[0034] After the pin 33 is removed, the support box 31 is connected to the bolt locking assembly 32, and the vertical limiting of the support box 31 and the bolt locking assembly 32 is released. Finally, the operator lifts the support box 31, causing its lower disc to leave the through slot, and flips the support base flat to make room for the new model. Then, the pin 33 is inserted into the lock hole to prevent loss. The bolt locking assembly 32 of this utility model includes a bolt and a nut.

[0035] This invention achieves rapid and reliable switching between multiple support seats on the same vehicle body through the ingenious combination of "pivot and flip + triple locking", perfectly solving many problems in the prior art and having extremely high practical value.

[0036] Those skilled in the art will readily understand that the above are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, combinations, substitutions, or improvements made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A flexible switching transfer trolley for multiple vehicle models with body-in-white, characterized in that, The system includes a vehicle body (1) comprising a chassis (11); multiple sets of support limiting mechanisms (2), each set of support limiting mechanisms (2) comprising a support seat; and multiple sets of support locking assemblies (3), each set of support locking assemblies (3) corresponding to a set of support limiting mechanisms (2), each support locking assembly (3) comprising a support box (31) fixed to the chassis (11); the support seat being rotatably connected to the support box (31); the support locking assembly (3) further comprising a pull pin (33) and a bolt locking assembly (32), the pull pin (33) and the bolt locking assembly (32) being mutually The bolt locking assembly (32) is vertically arranged and fixed to the support base. The bolt locking assembly (32) is rotatably connected to the support box (31). The pull pin (33) is used to restrict the rotation of the bolt locking assembly (32). The pull pin (33) includes a body part (33.1). The end face of the body part (33.1) is provided with a guide groove (33.2) coaxially arranged therewith. The outer peripheral surface of the body part (33.1) is provided with a plurality of ball bearing mounting holes (33.3) that penetrate radially therethrough. The plurality of ball bearing mounting holes (33.3) are arranged symmetrically around the central axis of the body part (33.1). The ball bearing mounting holes (33.3) and the... The guide groove (33.2) is connected, and a steel ball (33.4) is provided in the ball mounting hole (33.3). The spherical surface of the steel ball (33.4) located in the ball mounting hole (33.3) is higher than the outer peripheral surface of the main body (33.1). A pin (33.5) is provided in the guide groove (33.2). The guide groove (33.2) and the pin (33.5) correspond in shape. A compression spring (33.6) is provided at the bottom of the pin (33.5). The pin (33.5) contacts the compression spring (33.6). A pressure head (33.7) for loading the pin (33.5) is provided at the end of the guide groove (33.2). The pressure head (33.7) contacts the compression spring (33.6), and the outer peripheral surface of the pin (33.5) is provided with an annular groove for accommodating the steel ball (33.4). When the annular groove corresponds to the ball mounting hole (33.3), the steel ball (33.4) can be displaced radially along the body part (33.1). The outer peripheral surface of the bolt locking assembly (32) is provided with a pin hole that penetrates radially and corresponds to the shape of the body part (33.1). The inner wall of the pin hole is provided with a slot that corresponds one-to-one with the steel ball (33.4). The support box (31) and the support base are provided with through holes for the pull pin (33) to be disassembled and inserted.

2. The transfer trolley according to claim 1, characterized in that, The vehicle body (1) also includes multiple casters (12) mounted on the bottom of the chassis (11) and a trailer bracket (13) connected to the chassis (11).

3. The transfer trolley according to claim 1, characterized in that, The support base includes at least one first limiting block (21) and at least one second limiting block (22), both of which are square block structures.

4. The transfer trolley according to claim 1, characterized in that, The support base includes at least one third limiting block (23) and at least one fourth limiting block (24), both of which are L-shaped block structures.

5. The transfer trolley according to claim 1, characterized in that, The support base includes at least one fifth limiting block (25) and at least one sixth limiting block (26), both of which are double L-shaped block structures.

6. The transfer trolley according to any one of claims 3, 4, or 5, characterized in that, An elastic buffer layer is provided on the surface of the first limiting block (21), the second limiting block (22), the third limiting block (23), the fourth limiting block (24), the fifth limiting block (25), and the sixth limiting block (26) that are in contact with the body-in-white.

7. The transfer trolley according to claim 1, characterized in that, The support box (31) is a square channel steel structure with a through groove that matches the lower end of the support base.

8. The transfer trolley according to claim 7, characterized in that, The lower end of the support base, which is in an upright and locked state, is located in the through groove. The outer side of the support base is in contact with the bottom of the through groove, and the front and rear end faces of the support base are in contact with the groove wall of the through groove, respectively.

9. The transfer trolley according to claim 8, characterized in that, The bottom of the support base has rounded corners.

10. The transfer trolley according to claim 1, characterized in that, There are two ball bearing mounting holes (33.3), and the two ball bearing mounting holes (33.3) are arranged symmetrically with respect to the central axis of the main body (33.1).

Images