Light bus body electrophoresis fixing device and method

Abstract

The application discloses a light bus body electrophoresis fixing device and method, which comprises an electrophoresis support frame, a plurality of clamping grooves are arranged on the electrophoresis support frame and used for supporting the bus body, support devices are arranged on the clamping grooves and the electrophoresis frame support, first fixing devices and second fixing devices are further arranged on the electrophoresis support frame, the first fixing devices are connected with first limit pieces, the second fixing devices are connected with second limit pieces, the first limit pieces and the second limit pieces are the same in structure and are composed of hinged seats, pull rods and annular lifting eyes, the hinged seats are arranged at one end of the pull rods and connected with the bus body through positioning pin rods, and the other end of the pull rods is provided with the annular lifting eyes. The application solves the problems of poor universality of the traditional electrophoresis fixing device, complex structure of the traditional limit piece, low production efficiency and offset of the bus body caused by the influence of buoyancy.

Description

Technical Field

[0001] This invention relates to the field of electrophoresis fixture technology, and in particular to an electrophoresis fixing device and method for light passenger vehicle bodies. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In the electrophoretic coating process for light passenger vehicle bodies, the electrophoretic fixing device is a core piece of equipment to ensure coating quality and production safety. Currently, the industry commonly uses double-wire or limiting frames to fix the vehicle body to the electrophoretic support frame at four points. However, existing technologies have significant drawbacks. First, each vehicle body requires a large number of wires to connect the four fixing points. The wires are relatively thick, requiring a lot of manpower for repeated operations during the tightening process. This not only increases the labor intensity of workers but also makes it difficult to accurately control the tightening effect. If the tightening is not secure, the wires are easily loosened during the electrophoresis process due to vibration, buoyancy, and other factors. Second, after electrophoresis, the thick wires are difficult to remove. This is not only cumbersome but also generates a large amount of industrial waste from the discarded wires, which affects production efficiency.

[0004] In addition, the existing limit frame structure has poor versatility due to its fixed structural frame, making it difficult to adapt to the diverse body structures of different models of light passenger vehicles. Furthermore, the existing limit frame not only has a complex structure, but also has a large gap relative to the body. When faced with the complex shapes such as protrusions and depressions commonly found at the bottom of the body, it results in insufficient contact area, local stress concentration, and thus body deformation, affecting the body fixing effect and electrophoresis quality. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a light passenger vehicle body electrophoresis fixing device and method, which solves the problems of poor versatility of traditional electrophoresis fixing devices, complex structure of traditional limiting components, low production efficiency, and body displacement caused by buoyancy.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a light passenger vehicle body electrophoresis fixing device, comprising: an electrophoresis support frame; the electrophoresis support frame is provided with a plurality of slots for supporting the passenger vehicle body; the slots and the electrophoresis frame bracket are provided with support devices for adjusting the height of the slots according to different vehicle body structures; the electrophoresis support frame is also provided with a first fixing device and a second fixing device, the first fixing device being connected to a first limiting member; the second fixing device being connected to a second limiting member, both for fastening the vehicle body to the slots to prevent the vehicle body from shaking or falling off relative to the support frame during electrophoresis; The first limiting member and the second limiting member have the same structure and are both composed of a hinge seat, a pull rod and an annular lifting ring. The hinge seat is located at one end of the pull rod and is connected to the vehicle body through a positioning pin. The other end of the pull rod is provided with an annular lifting ring for connecting the first fixing device and the second fixing device to fix the vehicle body.

[0007] As a further implementation, the first fixing device consists of a first C-shaped hook, a first tensioning rod, and a first transmission rod; there are two first transmission rods, respectively disposed at both ends of the first tensioning rod, and there are also two first C-shaped hooks, respectively disposed at the end of the first transmission rod away from the first tensioning rod, for connecting the electrophoresis support frame and the first limiting member.

[0008] As a further implementation, the first transmission rod and the first tensioning rod are connected by threads, and the threads of the two first transmission rods and the first tensioning rod have opposite directions of rotation.

[0009] As a further implementation, the first transmission rod and the first C-hook are connected by welding.

[0010] As a further implementation, the second fixing device consists of a second C-shaped hook, a second tensioning rod, and a second transmission rod; there are two second transmission rods, which are respectively disposed at both ends of the second tensioning rod, and there are also two second C-shaped hooks, which are respectively disposed at the end of the second transmission rod away from the second tensioning rod, for connecting the electrophoresis support frame and the second limiting member.

[0011] As a further implementation, the second transmission rod and the second tensioning rod are connected by threads, and the threads of the two second transmission rods and the second tensioning rod have opposite directions of rotation.

[0012] As a further implementation, the second transmission rod and the second C-hook are connected by welding.

[0013] As a further implementation, the first fixing device and the second fixing device are connected to the electrophoresis support frame via lugs, and there are two lugs, with the first fixing device and the second fixing device respectively connected to one of the lugs; the lugs are distributed at both ends of the electrophoresis support frame.

[0014] As a further implementation, the support device is a telescopic structure used to adjust the height of the slot according to different vehicle body shapes; the slot is a U-shaped structure to facilitate the adaptation to uneven support points on the vehicle body.

[0015] Secondly, the present invention also provides a method for fixing a light passenger vehicle body electrophoresis fixing device, comprising the following steps: S1. Connect and fix the hinge seat of the first limiting member to the preset connection point of the vehicle body through the positioning pin, and connect and fix the hinge seat of the second limiting member to the preset connection point on the other side of the vehicle body through the positioning pin. S2. Connect the two first C-shaped hooks of the first fixing device to the corresponding lugs on the electrophoresis support frame, and at the same time hook the two first C-shaped hooks onto the ring-shaped ring at the other end of the first limiting member pull rod; by rotating the first tension rod, move the two first transmission rods inward or outward synchronously, thereby adjusting the tension of the first tension rod until the car body is firmly placed on the slot. S3. Connect the two second C-shaped hooks of the second fixing device to the lugs at the other end of the electrophoresis support frame, and hook them onto the ring-shaped shackles on the second limiting member pull rod; adjust the tension of the second tension rod by rotating it so that the car body is also firmly placed on the slot on the other side. S4. After completing the installation and tightening of the first and second fixing devices, check whether the vehicle body is stable in the slot and whether there is any shaking or tilting. If there is any shaking or tilting, it needs to be adjusted in time.

[0016] The beneficial effects of the present invention are as follows: The multiple slots on the electrophoresis support frame of this invention can adapt to various uneven support point shapes on the bottom of the vehicle body, increasing the contact area and avoiding local stress concentration; the support device can adjust the height of the slots for different vehicle body structures; the first and second fixing devices, combined with the limiting components, can fasten the vehicle body to the slots, preventing the vehicle body from shaking or falling off during electrophoresis, reducing the impact of buoyancy of the electrophoresis liquid, and are easy to operate, with connection achieved by rotation adjustment; the first and second limiting components have the same structure and are composed of a hinge seat, a pull rod, and an annular lifting ring, and the hinge seat is connected to the vehicle body through a positioning pin, improving connection stability.

[0017] The first fixing device of the present invention consists of a first C-hook, a first tensioning rod, and a first transmission rod. The electrophoresis support frame and the first limiting member are connected by two first C-hooks. The first tensioning rod brings the two first transmission rods closer together to achieve tension. The structure is reasonable and facilitates fixing the vehicle body. The first transmission rod and the first tensioning rod are connected by threads with opposite threads. Rotating the first tensioning rod easily achieves tensioning or loosening, making operation simple and quick, and improving fixing and disassembly efficiency. The first transmission rod and the first C-hook are welded by argon arc welding, ensuring the strength and sealing of the welded area, preventing cracking under stress, and improving the reliability and service life of the first fixing device.

[0018] The second fixing device of the present invention consists of a second C-shaped hook, a second tensioning rod, and a second transmission rod. The electrophoresis support frame and the second limiting member are connected by two second C-shaped hooks. The second tensioning rod brings the two second transmission rods closer together to achieve tension, which is coordinated with the adjustment of the first tensioning rod. Through multiple fine adjustments, the fastening force on both sides of the vehicle body is balanced, providing double protection for vehicle body fixing. The second transmission rod and the second tensioning rod are connected by threads with opposite threads. Rotating the second tensioning rod can achieve tensioning or loosening, which is convenient to operate and improves the practicality of the second fixing device. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is a longitudinal cross-sectional view of the slot of the electrophoresis fixing device of the present invention; Figure 2 This is a cross-sectional view of the first fixing device of the electrophoresis fixing device of the present invention.

[0021] In the diagram: 1. Electrophoresis support frame; 2. Slot; 3. Support device; 4. Hinge seat; 5. Tie rod; 6. Ring-shaped lifting ring; 7. First C-hook; 8. First tension rod; 9. First transmission rod; 10. Lifting lug; 11. First limiting component; 12. Second limiting component; 13. Second C-hook; 14. Second tension rod; 15. Second transmission rod. Detailed Implementation

[0022] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment discloses a light passenger vehicle body electrophoresis fixing device, such as... Figures 1-2As shown, the device includes: an electrophoresis support frame 1; the electrophoresis support frame 1 is provided with multiple slots 2 for supporting the bus body, which can adapt to various uneven support point shapes on the bottom of the vehicle body. For parts with protrusions or depressions on the bottom of the vehicle body, the slots 2 can fit tightly, increasing the contact area and avoiding local stress concentration; the slots 2 and the electrophoresis frame bracket are provided with support devices 3 for adjusting the height of the slots 2 according to different vehicle body structures; the electrophoresis support frame 1 is also provided with a first fixing device and a second fixing device. The first fixing device is connected to a first limiting member 11; the second fixing device is connected to a second limiting member 12, both of which are used to fasten the vehicle body to the slots 2, preventing the vehicle body from shaking or falling off relative to the support frame during electrophoresis. At the same time, it also ensures that the influence of buoyancy of the electrophoresis liquid is reduced during the descent. The operation is simple. Only by rotating and adjusting the first fixing device and the second fixing device can the connection between the vehicle body and the electrophoresis support frame 1 be realized, which solves the problem of poor universality and difficulty in adapting to different vehicle body structures of traditional electrophoresis fixing devices. The first limiting member 11 and the second limiting member 12 have the same structure, and both consist of a hinge seat 4, a pull rod 5, and an annular lifting ring 6. The hinge seat 4 is located at one end of the pull rod 5 and is connected to the car body through a positioning pin. The other end of the pull rod 5 is provided with an annular lifting ring 6, which is used to connect the first fixing device and the second fixing device to fix the car body. This solves the problem that the traditional limiting member is not firmly connected to the car body and is prone to loosening or even falling off during the electrophoresis process. The hinge seat 4 can be made of alloy steel and is connected to the car body in a hinged manner, which improves the connection stability between the fixing device and the car body. The surfaces of the first limiting member 11 and the second limiting member 12 are both treated with anti-rust to avoid excessive corrosion and component failure in the humid environment of the electrophoresis workshop. In addition, the annular lifting ring 6 of the first limiting member 11 is provided with a "left" shaped mark, and the annular lifting ring 6 of the second limiting member 12 is provided with a "right" shaped mark, which makes it easy to distinguish the placement of the car body from different directions, so as to avoid the car body being placed backwards and causing the next process to be unable to proceed normally.

[0024] As a further implementation, the first fixing device consists of a first C-hook 7, a first tensioning rod 8, and a first transmission rod 9; there are two first transmission rods 9, respectively disposed at both ends of the first tensioning rod 8, and there are also two first C-hooks 7, respectively disposed at the ends of the first transmission rods 9 away from the first tensioning rod 8, for connecting the electrophoresis support frame 1 and the first limiting member 11; the two first C-hooks 7 are used to connect the first limiting member 11 at both ends of the first fixing device and the electrophoresis support frame 1, and the two first transmission rods 9 are brought closer to each other under the tensioning action of the first tensioning rod 8, thereby pulling the two first C-hooks 7 closer to each other to achieve tensioning of the electrophoresis support frame 1 and the first limiting member 11.

[0025] As a further implementation, the first transmission rod 9 and the first tensioning rod 8 are connected by threads, and the threads of the two first transmission rods 9 and the first tensioning rod 8 have opposite directions of rotation. Since the threads at both ends of the first tensioning rod 8 have opposite directions of rotation, when tensioning is required, simply rotating the first tensioning rod 8 is enough to bring the two first transmission rods 9 closer together, thus achieving tension between the electrophoresis support frame 1 and the first limiting member 11. When relaxation is required, simply rotating the first tensioning rod 8 in the opposite direction is enough to move the two first transmission rods 9 further apart, thus achieving relaxation between the electrophoresis support frame 1 and the first limiting member 11.

[0026] As a further implementation, the first transmission rod 9 and the first C-shaped hook 7 are connected by welding. The welding adopts argon arc welding process to ensure the strength and sealing of the welded part and prevent the welded part from cracking during the stress process.

[0027] As a further implementation, the second fixing device consists of a second C-hook 13, a second tensioning rod 14, and a second transmission rod 15. There are two second transmission rods 15, which are respectively disposed at both ends of the second tensioning rod 14. There are also two second C-hooks 13, which are respectively disposed at the ends of the second transmission rods 15 away from the second tensioning rod 14, for connecting the electrophoresis support frame 1 and the second limiting member 12. The two second C-hooks 13 are used to connect the second limiting member 12 at both ends of the second fixing device and the electrophoresis support frame 1. The two second transmission rods 15 are brought closer to each other under the tensioning action of the second tensioning rod 14, thereby pulling the two second C-hooks 13 closer to each other to achieve tensioning of the electrophoresis support frame 1 and the second limiting member 12.

[0028] As a further implementation, the second transmission rod 15 and the second tensioning rod 14 are connected by threads, and the threads of the two second transmission rods 15 and the second tensioning rod 14 have opposite directions of rotation. When tensioning is required, simply rotating the second tensioning rod 14 will bring the two second transmission rods 15 closer together, thus achieving tension between the electrophoresis support frame 1 and the second limiting member 12. When relaxation is required, simply rotating the second tensioning rod 14 in the opposite direction will move the two second transmission rods 15 further apart, thus achieving relaxation between the electrophoresis support frame 1 and the second limiting member 12.

[0029] As a further implementation, the second transmission rod 15 and the second C-shaped hook 13 are connected by welding; the welding between the second transmission rod 15 and the second C-shaped hook 13 also adopts argon arc welding process to ensure the strength and sealing of the welded part.

[0030] As a further implementation, the first fixing device and the second fixing device are connected to the electrophoresis support frame 1 through the lugs 10, and there are two lugs 10. The first fixing device and the second fixing device are respectively connected to one of the lugs 10. The lugs 10 are distributed at both ends of the electrophoresis support frame 1. Since the first fixing device and the second fixing device are located on both sides of the vehicle body, the vehicle body can be subjected to a uniform clamping force during the adjustment process, ensuring that the vehicle body is in a centered and stable state in the slot 2.

[0031] As a further implementation, the support device 3 is a telescopic structure used to adjust the height of the slot 2 according to different vehicle body shapes; the slot 2 is a U-shaped structure to easily adapt to uneven support points on the vehicle body; the C-shaped hooks of the first and second fixing devices are connected to the lifting lug 10 and the annular lifting ring 6 of the limiting member, respectively, and the tension is adjusted by rotating the tension rod, and in conjunction with the first and second fixing devices, the vehicle body is subjected to a uniform clamping force, ensuring that the vehicle body is in a stable state within the slot 2. The U-shaped slot 2 opening can adapt to various uneven support point shapes on the bottom of the vehicle body. For parts with protrusions or depressions on the bottom of the vehicle body, the U-shaped slot 2 can fit tightly, increasing the contact area and avoiding local stress concentration.

[0032] Secondly, the present invention also provides a method for fixing a light passenger vehicle body electrophoresis fixing device, comprising the following steps: S1. Connect and fix the hinge seat 4 of the first limiting member 11 to the preset connection point of the vehicle body through the positioning pin, and connect and fix the hinge seat 4 of the second limiting member 12 to the preset connection point on the other side of the vehicle body through the positioning pin. S2. Connect the two first C-shaped hooks 7 of the first fixing device to the corresponding lugs 10 on the electrophoresis support frame 1, and at the same time make the two first C-shaped hooks 7 hook the annular ring 6 at the other end of the first limiting member 11 pull rod 5; by rotating the first tension rod 8, the two first transmission rods 9 move inward or outward synchronously, thereby adjusting the tension of the first tension rod 8 until the car body is firmly placed on the slot 2. During the adjustment process, since the threads of the two first transmission rods 9 are turned in opposite directions, they can move inward or outward synchronously to ensure uniform fastening force on the car body. S3. Connect the two second C-shaped hooks 13 of the second fixing device to the lugs 10 at the other end of the electrophoresis support frame 1, and hook them onto the ring-shaped rings 6 on the pull rod 5 of the second limiting member 12; adjust the tension of the second tension rod 14 by rotating it so that the car body is also firmly placed on the slot 2 on the other side. When adjusting the second tension rod 14, it needs to be coordinated with the adjustment of the first tension rod 8. Through multiple fine adjustments, the fastening force on both sides of the car body is balanced. S4. After completing the installation and tightening of the first and second fixing devices, check whether the vehicle body is stable in the slot 2, and whether there is any shaking or tilting. If there is any shaking or tilting, it needs to be adjusted in time.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A light passenger vehicle body electrophoresis fixing device, characterized in that, include: An electrophoresis support frame is provided; the support frame has multiple slots for supporting the bus body; a support device is provided between the slots and the electrophoresis support frame for adjusting the height of the slots according to different vehicle body structures; the support device is a telescopic structure for adjusting the height of the slots according to different vehicle body shapes; the slots are U-shaped to accommodate uneven support points on the vehicle body; the electrophoresis support frame is also provided with a first fixing device and a second fixing device; the first fixing device consists of a first C-shaped hook, a first tensioning rod, and a first transmission rod; the first transmission rod and the first tensioning rod are connected by threads, and the threads of the two first transmission rods and the first tensioning rod have opposite directions of rotation; the first fixing device is connected to a first limiting member; the second fixing device is connected to a second limiting member, both for securing the vehicle body to the slots to prevent the vehicle body from shaking or falling off relative to the support frame during electrophoresis; The first limiting member and the second limiting member have the same structure and are both composed of a hinge seat, a pull rod and an annular lifting ring. The hinge seat is located at one end of the pull rod and is connected to the vehicle body through a positioning pin. The other end of the pull rod is provided with an annular lifting ring for connecting the first fixing device and the second fixing device to fix the vehicle body.

2. The electrophoresis fixing device for a light passenger vehicle body as described in claim 1, characterized in that, There are two first transmission rods, which are respectively located at both ends of the first tensioning rod. There are also two first C-shaped hooks, which are respectively located at the end of the first transmission rod away from the first tensioning rod, for connecting the electrophoresis support frame and the first limiting member.

3. The electrophoresis fixing device for a light passenger vehicle body as described in claim 1, characterized in that, The first transmission rod and the first C-shaped hook are connected by welding.

4. The electrophoresis fixing device for a light passenger vehicle body as described in claim 1, characterized in that, The second fixing device consists of a second C-shaped hook, a second tensioning rod, and a second transmission rod; there are two second transmission rods, which are respectively set at both ends of the second tensioning rod, and there are also two second C-shaped hooks, which are respectively set at the end of the second transmission rod away from the second tensioning rod, for connecting the electrophoresis support frame and the second limiting member.

5. The electrophoresis fixing device for a light passenger vehicle body as described in claim 4, characterized in that, The second transmission rod and the second tensioning rod are connected by threads, and the threads of the two second transmission rods and the second tensioning rod have opposite directions of rotation.

6. The electrophoresis fixing device for a light passenger vehicle body as described in claim 5, characterized in that, The second transmission rod and the second C-shaped hook are connected by welding.

7. The electrophoresis fixing device for a light passenger vehicle body as described in claim 6, characterized in that, The first fixing device and the second fixing device are connected to the electrophoresis support frame via lugs, and there are two lugs. The first fixing device and the second fixing device are respectively connected to one of the lugs; the lugs are distributed at both ends of the electrophoresis support frame.

8. The fixing method of the electrophoresis fixing device for a light passenger vehicle body as described in claim 7, characterized in that, Includes the following steps: S1. Connect and fix the hinge seat of the first limiting member to the preset connection point of the vehicle body through the positioning pin, and connect and fix the hinge seat of the second limiting member to the preset connection point on the other side of the vehicle body through the positioning pin. S2. Connect the two first C-shaped hooks of the first fixing device to the corresponding lugs on the electrophoresis support frame, and at the same time hook the two first C-shaped hooks onto the ring-shaped ring at the other end of the first limiting member pull rod; by rotating the first tension rod, move the two first transmission rods inward or outward synchronously, thereby adjusting the tension of the first tension rod until the side of the vehicle body is firmly placed on the slot. S3. Connect the two second C-shaped hooks of the second fixing device to the lugs at the other end of the electrophoresis support frame, and hook them onto the ring-shaped rings on the second limiting member pull rod; adjust the tension of the second tension rod by rotating it so that the other side of the vehicle body is also firmly placed on the slot. S4. After completing the installation and tightening of the first and second fixing devices, check whether the vehicle body is stable in the slot and whether there is any shaking or tilting. If there is any shaking or tilting, it needs to be adjusted in time.

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