A chassis arrangement

Abstract

This application discloses a chassis device for supporting a mobile painting trolley, belonging to the field of mobile work equipment support technology. The device includes a chassis body, a cable chain groove, steel rails, a mounting base assembly, and a rack. The cable chain groove is fixed to the top of the chassis body. Two steel rails are symmetrically arranged along the length of the chassis body and fixed by a pressure plate assembly; the steel rails have an "I"-shaped cross-section. The mounting base assembly is located between the two steel rails, and the rack is fixed to the top of the mounting base assembly and cooperates with the trolley's transmission mechanism. It also includes a buffer structure installed at both ends of the steel rails. All key components are coated with an anti-rust coating. This application achieves stable fixing of the steel rails through the pressure plate assembly, precise positioning of the rack through the mounting base assembly, avoids rigid collisions through the buffer structure, and extends the service life through the anti-rust coating. The overall structure is stable, provides precise guidance, and has reliable transmission, effectively improving the working quality and efficiency of the mobile painting trolley, and is suitable for painting operations on various large workpieces.

Description

Technical Field

[0001] This application relates to the field of mobile work equipment support technology, and in particular to a chassis device. Background Technology

[0002] In industrial production, mobile painting carts are widely used for surface painting of large workpieces. They achieve comprehensive and uniform coating of the workpiece by moving along a preset trajectory. The base frame, as the core support and guiding component of the mobile painting cart, directly affects the quality and efficiency of the painting operation due to its structural stability, guiding accuracy, and assembly rationality.

[0003] In existing technologies, the chassis of mobile painting trolleys generally suffer from the following defects: First, the steel rails, which serve as the guide mechanism for the trolley's movement, are often fixed using simple bolt tightening, resulting in uneven distribution of tightening force and a lack of positioning structures adapted to the cross-sectional shape of the steel rails. This leads to the steel rails being prone to shifting and loosening during long-term use, thus affecting the straightness of the trolley's movement, causing deviation in the painting trajectory, and reducing painting accuracy. Second, most chassis devices lack effective buffer protection structures. When the mobile painting trolley reaches the ends of the trajectory, it is prone to rigid collisions with the ends of the chassis, which not only damages the structural components of the trolley and chassis but also affects the continuity of the painting operation. Third, the various components of the chassis are exposed to the painting environment for a long time, and paint mist, moisture, etc., are prone to corrosion of the components, reducing the service life of the chassis. Furthermore, the impurities produced by corrosion may also contaminate the surface of the workpiece, affecting the painting quality. Utility Model Content

[0004] This utility model is mainly aimed at addressing the above-mentioned problems existing in the prior art by providing a base frame device.

[0005] The objective of this utility model is mainly achieved through the following solution:

[0006] A chassis assembly for supporting a mobile painting trolley, the chassis assembly including a chassis body, a cable chain groove, a rail, a mounting base assembly and a rack;

[0007] The cable chain groove is fixedly installed on the top side of the base frame body, and its interior forms a space to accommodate the cable chain;

[0008] The steel rails are arranged along the length of the base frame body, and two are symmetrically arranged at the front and back. Both steel rails are fixed to the upper surface of the base frame body by pressure plate assembly. The cross-section of the steel rails is an "I" shaped structure.

[0009] The mounting base assembly is arranged along the length of the base frame body, fixedly installed on the upper surface of the base frame body, and located between two steel rails. The rack is fixedly installed on the top side of the mounting base assembly for cooperating with the transmission mechanism of the mobile painting trolley.

[0010] Preferably, the mounting base assembly includes multiple mounting blocks, which are spaced apart along the length of the base body, and a mounting recess is provided on one side of the top of each mounting block, and the back of the rack is fixedly mounted to the mounting recess.

[0011] Preferably, the pressure plate groups are arranged at intervals along the length of the rail. Each pressure plate group includes two pressure plate bodies arranged symmetrically front to back. The lower surface of the opposite side of the two pressure plate bodies is provided with an inclined surface corresponding to the lower upper surface of the rail. One end of the pressure plate body is fixedly installed on the base frame body, and the other end of the pressure plate body is pressed against the lower upper surface of the rail through the inclined surface.

[0012] Preferably, the underframe device also includes a buffer structure, wherein two buffer structures are provided and are symmetrically installed at the left and right ends between the two rails;

[0013] Each of the buffer structures includes a support frame, and clamping assemblies are provided on the left and right sides of the lower surface of the support frame, and the support frame is fixedly installed on the rail by the clamping assemblies.

[0014] Buffer blocks are installed on opposite sides of both support frames.

[0015] Preferably, the clamping assemblies on both the left and right sides are arranged in multiple sets at intervals along the length of the support frame;

[0016] Each clamp assembly includes a fixing plate, the lower surface of which contacts the upper surface of the rail. Multiple opposing clamping plates are provided on the front and rear sides of the fixing plate. Clamping grooves are provided on the inner side of the clamping plates. The upper part of the clamping plates is fixedly connected to the fixing plate. The inner side of the clamping plates is clamped to the upper part of the rail through the clamping grooves.

[0017] Preferably, the inner wall of the clamping groove of the clamping plate is provided with anti-slip teeth.

[0018] Preferably, the base frame body, cable chain groove, mounting base assembly and pressure plate assembly are all coated with an anti-rust coating.

[0019] Preferably, the rack is a straight rack;

[0020] The mobile painting trolley includes a base, a transmission mechanism is installed on the lower surface of the base, and roller sets are symmetrically installed on the front and rear sides of the lower surface of the base. The roller sets can roll along the side wall of the rail.

[0021] Preferably, the transmission mechanism includes a drive motor and a transmission gear mounted on the output end of the drive motor, wherein the transmission gear is meshed with a rack.

[0022] Preferably, each side has multiple sets of rollers along the length of the rail;

[0023] Each set of rollers includes two vertically arranged rotating shafts, the upper part of which is rotatably connected to the base, and the lower part of which is fixedly fitted with a roller body. The two roller bodies are respectively rotatably connected to the upper front and rear sides of the rail.

[0024] In summary, compared with the prior art, the present invention has the following beneficial technical effects:

[0025] (1) This utility model uses a pressure plate assembly with an inclined surface to press and fix the "I" shaped steel rail. The inclined surface is precisely matched with the lower upper surface of the steel rail, which can generate a uniform pressing force and simultaneously achieve front and rear positioning of the steel rail. This effectively prevents the steel rail from shifting or loosening during long-term use, provides stable and accurate guidance for the mobile painting trolley, and improves the accuracy of the painting trajectory.

[0026] (2) The present invention uses a mounting block arranged at intervals to form a mounting base assembly. The mounting recess on the mounting block can accurately position the rack, ensuring that the rack mounting reference is consistent, avoiding problems such as transmission jamming and abnormal noise caused by unstable rack installation, and improving the operation stability and reliability of the transmission mechanism.

[0027] (3) The present invention provides a buffer structure at both ends of the base frame body, and uses buffer blocks to buffer and decelerate the trolley moving to the end of the track, so as to avoid rigid collisions causing damage to the trolley and the base frame, and ensure the safety of operation and the continuity of painting operation;

[0028] (4) The present invention coats the surface of key components such as the base frame body, drag chain groove, mounting base assembly and pressure plate assembly with anti-rust coating, which can effectively isolate the corrosion of corrosive media, reduce the corrosion of components, extend the service life of the base frame device, and at the same time avoid rust impurities from contaminating the workpiece and ensure the quality of spraying. Attached Figure Description

[0029] Figure 1 This is the front view of this utility model;

[0030] Figure 2 This is a top view of the present invention;

[0031] Figure 3 yes Figure 2 Cross-sectional view along the BB direction;

[0032] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0034] Figure 6 This is a schematic diagram of the installation of the buffer structure in this utility model;

[0035] Figure 7 This is a schematic diagram of the buffer structure in this utility model;

[0036] Figure 8 This is a schematic diagram of the fixture assembly in this utility model;

[0037] Figure 9 This is a schematic diagram of the installation of the mobile painting cart base in this utility model.

[0038] Reference numerals: 1-Base frame body, 2-Drag chain groove, 3-Steel rail, 4-Rack, 5-Mounting block, 6-Mounting recess, 7-Pressure plate body, 8-Inclined surface, 9-Support frame, 10-Buffer block, 11-Fixing plate, 12-Clamping plate, 13-Clamping groove, 14-Base, 15-Drive motor, 16-Transmission gear, 17-Rotating shaft, 18-Roller body. Detailed Implementation

[0039] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0040] like Figure 1 , 2 As shown in Figures 1 and 3, this utility model discloses a technical solution: a base frame device for supporting a mobile painting trolley. The base frame device includes a base frame body 1, a drag chain groove 2, a steel rail 3, a mounting base assembly, and a rack 4.

[0041] The base frame body 1 is welded from H-beams and steel plates, forming a rectangular frame structure. The length is set according to the painting operation requirements. The four corners of the lower surface of the base frame body 1 are equipped with leveling feet (available on the market) to adjust the levelness of the base frame body 1 (using a level to assist in leveling) to ensure that it is placed stably. The base frame body 1 is provided with fixing holes for installing the steel rail 3 and the mounting base assembly.

[0042] The cable chain groove 2 is welded or bolted to the top rear side of the base frame body 1, and its interior forms a space to accommodate the cable chain. The cross-section of the cable chain groove 2 is U-shaped, and its interior is used to accommodate the cables, air pipes and other pipelines of the mobile painting trolley and the matching cable chain, so as to avoid interference between the cable chain and other components.

[0043] The steel rail 3 is set along the length of the base frame body 1, and two are symmetrically arranged at the front and back. Both steel rails 3 are fixed to the upper surface of the base frame body 1 by pressure plate assembly. The cross section of the steel rail 3 is in the shape of an "I" and the model is QU80. The "I" shaped cross section can provide a stable guide support surface for the roller assembly of the mobile painting trolley and improve the straightness of the trolley movement.

[0044] The mounting base assembly is set along the length of the base frame body 1, fixedly installed on the upper surface of the base frame body 1, and located between the two steel rails 3. The rack 4 is fixedly installed on one side of the top of the mounting base assembly, and is used to cooperate with the transmission mechanism of the mobile painting trolley to realize the precise movement of the trolley along the steel rails 3.

[0045] Specifically, such as Figure 4 As shown, the mounting bracket assembly includes multiple mounting blocks 5, which are arranged at 0.5m intervals along the length of the base frame body 1 and fixed to the upper surface of the base frame body 1 by bolts. A mounting recess 6 is provided on one side of the top of each mounting block 5, and the back of the rack 4 is fixed to the mounting recess 6 by bolts. The mounting recess 6 allows for precise positioning of the rack 4, ensuring consistent mounting references and improving the stability of the rack 4 installation.

[0046] Specifically, such as Figure 5 As shown, the pressure plate groups are arranged at intervals along the length of the rail 3. In this embodiment, a group of pressure plate groups is set every 0.5m along the length of the rail 3. Each group of pressure plate groups includes two symmetrically arranged pressure plate bodies 7. The pressure plate bodies 7 are made of Q235 material. The lower surface of the opposite side of the two pressure plate bodies 7 is provided with an inclined surface 8 that matches the lower upper surface of the rail 3. One end of the pressure plate body 7 is fixed to the base frame body 1 by bolts, and the other end of the pressure plate body 7 is pressed against the lower upper surface of the rail 3 by the inclined surface 8. The matching design of the inclined surface 8 and the lower upper surface of the rail 3 enables the pressure plate body 7 to generate a uniform pressing force on the rail 3, and at the same time realizes the front and rear positioning of the rail 3, effectively preventing the rail 3 from shifting or loosening during use.

[0047] Specifically, such as Figure 6 , 7As shown in Figure 8, the base frame device also includes a buffer structure. Two buffer structures are symmetrically installed at the left and right ends between the two rails 3. Each buffer structure includes a support frame 9, with clamping assemblies on both sides of the lower surface of the support frame 9, which securely mount the support frame 9 to the rail 3. Buffer blocks 10 are installed on opposite sides of the two support frames 9. The buffer blocks 10 are made of polyurethane and are bolted to the opposite sides of the two support frames 9. The center height of the buffer blocks 10 is consistent with the height of the anti-collision part of the mobile painting trolley base 14, ensuring precise contact between the trolley and the buffer blocks 10 when the trolley reaches the end of the track. The buffer blocks 10 can buffer and decelerate the trolley when it reaches the ends of the track, preventing rigid collisions between the trolley and the base frame ends, protecting the structural integrity of the trolley and the base frame, and ensuring the continuity of the painting operation.

[0048] Specifically, three sets of clamping assemblies are arranged at intervals along the length of the support frame 9 on both the left and right sides. Each set of clamping assemblies includes a fixing plate 11 welded to the lower surface of the support frame 9. The lower surface of the fixing plate 11 contacts the upper surface of the rail 3. Multiple opposing clamping plates 12 are provided on the front and rear sides of the fixing plate 11. Clamping grooves 13 are provided on the inner side of the clamping plates 12. The upper part of the clamping plates 12 is fixedly connected to the fixing plate 11 by bolts. The inner side of the clamping plates 12 is clamped to the upper part of the rail 3 through the clamping grooves 13, thereby achieving a fixed connection between the support frame 9 and the rail 3. The arrangement of multiple sets of clamping assemblies can improve the stability of the connection between the support frame 9 and the rail 3. The fitting design of the clamping grooves 13 and the upper part of the rail 3 can achieve precise positioning of the support frame 9, ensuring that the installation position of the buffer block 10 corresponds to the running trajectory of the trolley.

[0049] Specifically, the inner wall of the clamping groove 13 of the clamping plate 12 is provided with anti-slip serrations. The anti-slip serrations can increase the friction between the clamping plate 12 and the rail 3, further improve the clamping stability of the clamping assembly on the rail 3, and prevent the support frame 9 from shifting.

[0050] Specifically, the base frame body 1, cable chain groove 2, mounting base assembly, and pressure plate assembly are all coated with an anti-rust coating. This anti-rust coating effectively isolates the components from corrosive media such as paint mist and moisture, enhancing the base frame's rust resistance and extending its service life. It also prevents rust contamination of the workpiece surface. The anti-rust coating consists of two layers of epoxy primer and one layer of polyurethane topcoat. The primer is 60μm thick, the topcoat is 40μm thick, and the total coating thickness is 100μm, effectively improving the rust resistance of each component.

[0051] Specifically, rack 4 uses a straight rack; such as Figure 9As shown, the mobile painting cart includes a base 14, a transmission mechanism is mounted on the lower surface of the base 14, and roller sets are symmetrically mounted on the front and rear sides of the lower surface of the base 14. The roller sets can roll along the side wall of the steel rail 3. The cooperation between the linear rack 4 and the transmission mechanism enables the cart to move in a uniform linear motion, improving the accuracy of the painting trajectory.

[0052] Specifically, the transmission mechanism includes a servo drive motor 15 and a transmission gear 16 installed at the output end of the drive motor 15. The drive motor 15 is fixed to the base 14 by a motor mount. The transmission gear 16 is installed at the output end of the drive motor 15 by a flat key and meshes with the rack 4. The forward and reverse rotation of the drive motor 15 drives the transmission gear 16 to roll along the rack 4, thereby driving the mobile painting trolley to move back and forth along the rail 3.

[0053] Specifically, each side has three sets of rollers along the length of the rail 3. Each set of rollers includes two vertically arranged rotating shafts 17, one at the front and one at the back. The upper part of the rotating shaft 17 is rotatably connected to the base 14 via bearings, and the lower part of the rotating shaft 17 is fixedly fitted with a roller body 18. The roller body 18 is made of polyurethane, and the two roller bodies 18 are respectively rolled and connected to the front and rear sides of the upper part of the rail 3. The arrangement of multiple sets of rollers can improve the stability of the cooperation between the trolley and the rail 3. At the same time, the clamping rolling of the two roller bodies 18 on the front and rear sides of the upper part of the rail 3 can further limit the lateral displacement of the trolley and ensure the precise guidance of the trolley along the rail 3.

[0054] In this embodiment, the base frame device is first adjusted to a horizontal state using the leveling feet on the lower surface of the base frame body 1. Then, the roller assembly of the mobile painting trolley is placed on the two steel rails 3, so that the transmission gear 16 meshes with the rack 4, and the trolley's pipeline and cable chain are placed in the cable chain groove 2. The drive motor 15 is started, and the drive motor 15 drives the transmission gear 16 to rotate. Through the meshing of the transmission gear 16 and the rack 4, the trolley is driven to move at a constant speed along the steel rail 3 to realize the painting operation of the workpiece. When the trolley runs to both ends of the base frame, its ends contact the buffer block 10. The buffer block 10 undergoes elastic deformation to buffer and decelerate the trolley, avoiding rigid collisions. During the operation, the cable chain slides smoothly in the cable chain groove 2 with the movement of the trolley without interfering with other components. At the same time, the anti-rust coating on the surface of each component effectively isolates the corrosion of paint mist and moisture, ensuring the long-term stable operation of the base frame device.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A base frame device for supporting a mobile painting cart, characterized in that: The underframe assembly includes an underframe body (1), a drag chain groove (2), a rail (3), a mounting base assembly, and a rack (4). The cable chain groove (2) is fixedly installed on the top side of the base frame body (1), and its interior forms a space to accommodate the cable chain; The steel rail (3) is arranged along the length of the base frame body (1), and two are arranged symmetrically at the front and back. Both steel rails (3) are fixed to the upper surface of the base frame body (1) by pressure plate assembly. The cross section of the steel rail (3) is an "I" shaped structure. The mounting base assembly is arranged along the length of the base frame body (1), fixedly installed on the upper surface of the base frame body (1), and located between two steel rails (3). The rack (4) is fixedly installed on the top side of the mounting base assembly for cooperating with the transmission mechanism of the mobile painting trolley.

2. The base frame device according to claim 1, characterized in that: The mounting base assembly includes multiple mounting blocks (5), which are spaced apart along the length of the base body (1), and a mounting recess (6) is provided on one side of the top of the mounting block (5), and the back of the rack (4) is fixedly installed in the mounting recess (6).

3. The base frame device according to claim 1, characterized in that: The pressure plate groups are arranged at intervals along the length of the rail (3). Each pressure plate group includes two pressure plate bodies (7) arranged symmetrically in front and behind. The lower surface of the two pressure plate bodies (7) on opposite sides is provided with an inclined surface (8) corresponding to the lower upper surface of the rail (3). One end of the pressure plate body (7) is fixedly installed on the base frame body (1), and the other end of the pressure plate body (7) is pressed against the lower upper surface of the rail (3) through the inclined surface (8).

4. The base frame device according to claim 1, characterized in that: The base frame device also includes a buffer structure, which has two buffer structures and is symmetrically installed at the left and right ends between the two rails (3); Each of the buffer structures includes a support frame (9), and clamp assemblies are provided on the left and right sides of the lower surface of the support frame (9), and the support frame (9) is fixedly installed on the rail (3) by the clamp assemblies; Buffer blocks (10) are installed on opposite sides of the two support frames (9).

5. A base frame device according to claim 4, characterized in that: The clamp assemblies on both the left and right sides are arranged in multiple sets at intervals along the length of the support frame (9); Each clamp assembly includes a fixing plate (11), the lower surface of which is in contact with the upper surface of the rail (3). Multiple opposing clamping plates (12) are provided on the front and rear sides of the fixing plate (11). A clamping groove (13) is provided on the inner side of the clamping plate (12). The upper part of the clamping plate (12) is fixedly connected to the fixing plate (11). The inner side of the clamping plate (12) is clamped to the upper part of the rail (3) through the clamping groove (13).

6. A base frame device according to claim 5, characterized in that: The clamping groove (13) of the clamping plate (12) has anti-slip teeth on its inner side wall.

7. A base frame device according to claim 1, characterized in that: The base frame body (1), drag chain groove (2), mounting base assembly and pressure plate assembly are all coated with anti-rust coating.

8. A base frame device according to claim 1, characterized in that: The rack (4) is a straight rack; The mobile painting trolley includes a base (14), a transmission mechanism is installed on the lower surface of the base (14), and roller sets are symmetrically installed on the front and rear sides of the lower surface of the base (14). The roller sets can roll along the side wall of the rail (3).

9. A base frame device according to claim 8, characterized in that: The transmission mechanism includes a drive motor (15) and a transmission gear (16) installed at the output end of the drive motor (15), wherein the transmission gear (16) is meshed with the rack (4).

10. A base frame device according to claim 8, characterized in that: Each side of the roller assembly is provided with multiple sets along the length of the rail (3); Each set of rollers includes two vertically arranged rotating shafts (17) at the front and rear. The upper part of the rotating shaft (17) is rotatably connected to the base (14). The lower part of the rotating shaft (17) is fixedly fitted with a roller body (18). The two roller bodies (18) are respectively rotatably connected to the upper front and rear sides of the rail (3).

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