Low-contact coating device and method for variable-amplitude oil cylinder

Abstract

The low-contact coating device comprises a supporting frame, the lower portion of the supporting frame is connected with a guide wheel through a supporting leg, the upper portion of the supporting frame is provided with a supporting column, the supporting column is provided with a shaft column connected with an oil cylinder, and the supporting frame is further provided with a balancing weight. According to the low-contact coating device and method for the variable-amplitude oil cylinder, the shaft column on the coating device is connected with the shaft hole of the oil cylinder bottom and the shaft hole of the lug ring, the supporting effect is achieved, meanwhile, the contact area is small, the shaft hole face of the oil cylinder can be shielded and protected conveniently, one-time complete spraying of the oil cylinder in the spraying process is achieved, and the spraying efficiency is improved. The oil cylinder is prevented from being repaired, meanwhile, the problems of repairing traces, misty paint and the like caused by repairing are solved, the spraying qualification rate is increased, and the machining cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a low-contact coating device and method for a variable-luff cylinder. Background Art

[0002] Large-tonnage hydraulic cylinders cannot be sprayed conveniently on a coating line with a conveyor chain or accumulation chain structure due to their weight and length. Generally, a coating line with a vertical ground chain transmission is selected and matched with a support frame or a trolley as a supporting tooling, so that the cylinder is placed flat on the supporting tooling to complete the spraying. In this coating process, because the contact part between the cylinder surface and the supporting tooling is blocked, there are leakage and virtual spraying phenomena in the contact part after spraying. If the missed spraying position is repainted, there will be appearance quality defects such as repainting on the coating surface and fogging paint. Therefore, how to achieve low contact between the cylinder and the supporting device or contact between the non-painted part and the supporting tooling when placing large-tonnage cylinders has become a key issue to be solved.

[0003] In terms of the application of large-tonnage variable-length oil cylinder painting placement, most of the existing technologies currently still use the method of placing the oil cylinder directly on the support frame tooling to complete the spraying. In some other scenarios, the platform above the support frame will be designed to be conical or angular to reduce the contact area between the oil cylinder painting part and the support frame surface, thereby reducing spraying obstruction. When the oil cylinder is placed directly on the support frame tooling to complete the spraying, although in some scenarios the platform above the support frame will be designed to be conical or angular to minimize the contact area between the painting part and the support frame and reduce spraying obstruction, the problem of missed spraying on the contact part cannot be avoided. Further, it brings about appearance problems such as patching marks and fog paint caused by secondary repair of missed spraying. At the same time, the inability to spray completely in one time also brings about problems such as waste of production efficiency and rework costs.

[0004] Luffing cylinder: The luffing cylinder is generally an engineering hydraulic cylinder connected by front and rear earrings. The angle of the arm of the lifting machinery is changed by the extension and retraction of this hydraulic cylinder to achieve the effect of luffing. According to the role it plays, it is called a luffing cylinder.

[0005] Shielding: Use tooling or auxiliary materials to shield and protect areas that do not need to be painted to prevent areas that do not need to be painted (non-painted surfaces) from being sprayed with paint. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a low-contact coating device and method for a variable-luff cylinder with a simple structure and good effect.

[0007] The present invention is implemented with the following technical scheme: a variable-length oil cylinder low-contact coating device, comprising a support frame, the lower part of the support frame is connected to a guide wheel through a support leg, the upper part of the support frame is provided with a support column, the support column is provided with an axial column connected to the oil cylinder, and the support frame is also provided with a counterweight block.

[0008] It is further provided with four guide wheels at the bottom of the support frame, and the guide wheels are used in conjunction with the ground rails of the processing workshop.

[0009] The support column is arranged at the middle position of the upper part of the support frame, and a group of shaft columns are symmetrically arranged on both sides of the support column.

[0010] The counterweight block is arranged below the shaft column.

[0011] The distance between the counterweight block and the shaft column includes the installation space and spraying space of the oil cylinder.

[0012] The shaft column is a shaft rod arranged horizontally.

[0013] The shaft column is welded on the supporting column.

[0014] The counterweight block is welded on the supporting frame.

[0015] A method for a low-contact coating device of a variable-luff cylinder comprises the following steps: S1. Transfer a set of coating devices to the ground rail, and keep a certain distance between the two coating devices; S2. Use a lifting device to lift the oil cylinder so that the bottom of the oil cylinder and the axial hole of the earring are aligned with the shaft column position of the coating device; S3, move the oil cylinder so that the shaft holes at both ends of the oil cylinder are placed in the middle position of the shaft column; S4, lower the oil cylinder to complete the parallel suspension of the oil cylinder; S5. Hang another oil cylinder on the other side in the same way; S6. The hoisting of the two oil cylinders is completed and spraying is carried out.

[0016] The present invention has the following advantages: a low-contact coating device and method for a variable-length oil cylinder of the present invention contacts the bottom of the oil cylinder and the axial hole of the earring (non-coating part) through the shaft column on the coating device, which not only plays a supporting role, but also has a small contact area and does not block the spraying surface, and is also convenient for shielding and protecting the axial hole surface of the oil cylinder, so that the oil cylinder can be sprayed completely at one time during the spraying process, avoiding repairing of the blocked and leaked positions of the oil cylinder, and at the same time avoiding the problems of patching marks, fog paint, etc. caused by repairs, thereby improving the spraying qualification rate and reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 and Figure 3 It is a schematic diagram of the structure after the present invention is installed.

[0019] In the figure: 1. support frame, 2. guide wheel, 3. counterweight, 4. support column, 5. shaft column, 6. shaft hole, 7. arc surface.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 3A low-contact coating device for a variable-length oil cylinder shown in the figure comprises a support frame 1, the lower part of the support frame 1 is connected to a guide wheel 2 through a leg, the upper part of the support frame 1 is provided with a support column 4, the support column 4 is provided with an axle column 5 connected to the oil cylinder, and the support frame 1 is also provided with a counterweight 3. The low-contact coating device for a variable-length oil cylinder of the present invention mainly comprises a support frame, a guide wheel, a counterweight and an axle column, and when in use, the cylinder bottom of the oil cylinder and the axle hole of the earring are in contact with the axle column. According to the layout of its own coating line and the structural characteristics of the variable-length oil cylinder, the cylinder bottom of the variable-length oil cylinder and the axle hole of the earring (non-coating surface) are used as hanging points, and a hanging device is used to realize low-contact hanging of the oil cylinder, thereby realizing a set of hanging devices to hang two variable-length oil cylinders for spraying; the main purpose of the present invention is to realize parallel hanging of large-tonnage variable-length oil cylinders for spraying, so as to avoid direct contact between the coating part of the oil cylinder and the tooling to block the spraying. In order to ensure that the coating film thickness and coating appearance of each part of the oil cylinder meet customer requirements, this low-contact coating hanging device and method are designed to achieve high-quality, one-time hanging and complete spraying of the oil cylinder.

[0025] like Figures 1 to 3 In the embodiment of the present invention, a variable-length oil cylinder low-contact coating device is provided with four guide wheels 2 at the bottom of the support frame 1, and the guide wheels 2 are used in conjunction with the floor rails of the processing workshop. In the variable-length oil cylinder low-contact coating device of the present invention, guide wheels are installed under the support frame to enable the coating device to move smoothly on the floor rails of the coating line, facilitate operation, and reduce labor intensity.

[0026] like Figures 1 to 3 A variable-length oil cylinder low-contact coating device is shown, wherein the support column 4 is arranged in the middle position of the upper part of the support frame 1, and a group of shaft columns 5 are symmetrically arranged on both sides of the support column 4. The counterweight block 3 is arranged below the shaft column 5. A support column is vertically arranged in the middle part of the support frame of the variable-length oil cylinder low-contact coating device of the present invention, and a shaft column is installed on the side of the support column at a suitable height position, and two shaft columns are symmetrically arranged on both sides of the support column, wherein a counterweight block is arranged below the shaft column, and the counterweight block is placed on the support frame, and the counterweight block is used to balance the hanging trolley to prevent the rollover phenomenon when a single oil cylinder is loaded or unloaded, which can improve the safety of the equipment.

[0027] like Figures 1 to 3 In the low-contact coating device for a variable-length oil cylinder shown in the figure, the distance between the counterweight block 3 and the shaft column 5 includes the installation space of the oil cylinder and the spraying space. After the shaft column of the present invention is installed, there is a certain distance between it and the counterweight block below. The installation height of the shaft column needs to ensure that it can accommodate an oil cylinder and the distance between the bottom of the oil cylinder and the counterweight block leaves enough spraying space.

[0028] like Figures 1 to 3In the low-contact coating device for a variable-length oil cylinder shown in the figure, the shaft column 5 is a horizontally arranged shaft rod. The shaft column of the present invention is arranged horizontally, which facilitates the hoisting operation of the oil cylinder.

[0029] like Figures 1 to 3 In the low-contact coating device for a variable-length oil cylinder shown in the figure, the shaft column 5 is welded to the support column 4. The counterweight block 3 is welded to the support frame 1. The shaft column and the counterweight block of the present invention are both connected by welding, which can improve the connection strength and ensure the reliability of the connection.

[0030] A method for a low-contact coating device of a variable-luff cylinder comprises the following steps: S1. When using, first transfer a set of coating devices to the ground rail, and keep a certain distance between the two coating devices, such as Figure 2 As shown; S2, lift the oil cylinder with a lifting device, so that the bottom of the oil cylinder and the axial hole 6 of the earring are aligned with the position of the shaft column 5 of the coating device; S3, move the oil cylinder so that the shaft holes 6 at both ends of the oil cylinder are sleeved in the middle position of the shaft column 5; S4, lower the oil cylinder to complete the parallel suspension of the oil cylinder; S5. Hang another oil cylinder on the other side in the same way. At this time, the part in contact with the shaft column 5 is a section of the arc surface 7 of the non-coated shaft hole of the oil cylinder. The contact area is low enough, which is also convenient for shielding and protecting the shaft hole surface of the oil cylinder. S6. The hoisting of the two oil cylinders is completed and spraying is carried out. In this placement state, the spraying is carried out without blocking the painted surface of the oil cylinder.

[0031] The low-contact coating device and method of the variable-length oil cylinder of the present invention realizes a low contact area between the non-coating part of the oil cylinder and the device, improves the convenience of shielding the non-coating surface of the shaft hole, and avoids the coating part of the oil cylinder from being blocked. During the spraying process, the oil cylinder can be sprayed completely at one time, avoiding repairs to the oil cylinder, and avoiding problems such as patching marks and mist paint caused by repairs. In addition, the qualified rate of the oil cylinder spraying at one time is improved, and the cost waste caused by rework and repair is also reduced.

[0032] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0033] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0034] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A low-contact coating device for a variable-luff cylinder, characterized in that: The invention comprises a support frame (1), the lower part of which is connected to a guide wheel (2) via a support leg, the upper part of which is provided with a support column (4), the support column (4) is provided with a shaft column (5) connected to an oil cylinder, and the support frame (1) is also provided with a counterweight (3).

2. A low-contact coating device for a variable-luff cylinder as claimed in claim 1, characterized in that: Four guide wheels (2) are provided at the bottom of the support frame (1), and the guide wheels (2) are used in conjunction with the floor rails of the processing workshop.

3. The low-contact coating device for a variable-luff cylinder according to claim 1, characterized in that: The support column (4) is arranged at the middle position of the upper part of the support frame (1), and a group of shaft columns (5) are symmetrically arranged on both sides of the support column (4).

4. A low-contact coating device for a variable-luff cylinder as claimed in claim 3, characterized in that: The counterweight block (3) is arranged below the shaft column (5).

5. The low-contact coating device for a variable-luff cylinder according to claim 4, characterized in that: The distance between the counterweight block (3) and the shaft column (5) includes the installation space of the oil cylinder and the spraying space.

6. The low-contact coating device for a variable-luff cylinder according to claim 1, characterized in that: The shaft column (5) is a shaft rod arranged horizontally.

7. The low-contact coating device for a variable-luff cylinder according to claim 1, characterized in that: The shaft column (5) is welded to the support column (4).

8. The low-contact coating device for a variable-luff cylinder according to claim 1, characterized in that: The counterweight block (3) is welded to the support frame (1).

9. A method for using the variable amplitude oil cylinder low contact coating device according to claim 1, characterized in that: The steps include: S1. Transfer a set of coating devices to the ground rail, and keep a certain distance between the two coating devices; S2, lift the oil cylinder with a lifting device so that the bottom of the oil cylinder and the axial hole (6) of the earring are aligned with the position of the shaft column (5) of the coating device; S3, move the oil cylinder so that the shaft holes (6) at both ends of the oil cylinder are sleeved in the middle position of the shaft column (5); S4, lower the oil cylinder to complete the parallel suspension of the oil cylinder; S5. Hang another oil cylinder on the other side in the same way; S6. The hoisting of the two oil cylinders is completed and spraying is carried out.

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