A turntable trolley bracket sand prevention device

Abstract

The utility model discloses a kind of rotary table trolley bracket sand prevention devices, including protective cover assembly, fixed component, sealing assembly and air pressure protection assembly;The protective cover assembly includes shell and perforated rubber plate, the fixed component includes flat hinge, magic tape and hasp, wear cloth is wrapped around the edge of the aperture of perforated rubber plate, and the other end is provided with tension spring or rubber band;The air pressure protection assembly includes air pipe quick connector, the air pipe quick connector is set on shell, for connecting external air pipe and into gas to the inside of shell to build positive pressure environment.The utility model structure design is reasonable, using the characteristics that magic tape can tear and pull adhesion, through the synergistic effect of multiple protection measures, significantly reduce the probability of sand entering the matching area of roller frame and shaft head, effectively protect roller frame and shaft head, avoid roll surface to wear, guarantee finished product quality.

Description

Technical Field

[0001] This utility model relates to the field of bracket protection technology, and in particular to a sand-proof device for a turntable trolley bracket. Background Technology

[0002] In the production and processing of spray coating rollers, different support methods are used for rollers with different shaft head structures. For rollers without internal threads on the shaft head, a push pin can be used to lift them directly for subsequent operations; however, for rollers with internal threads on the shaft head, roller brackets are required for support to protect the thread structure from damage. Figure 1 As shown.

[0003] However, during roughening and sandblasting of these rollers with internally threaded shaft ends, a large amount of splashed sand particles are generated. These sand particles easily adhere to and enter the mating area between the shaft end and the support roller. As the roller rotates on the support, the sand particles in this area create friction and compression between the shaft end and the roller. This friction and compression not only accelerates the wear of the shaft end and roller but also causes scratches on the roller surface, seriously affecting the processing quality of roller products, causing damage to finished products, increasing production costs, and reducing production efficiency. Summary of the Invention

[0004] The purpose of this utility model is to solve the above-mentioned technical problems and provide a sand-proof device for a turntable trolley bracket.

[0005] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by this utility model is: a sand-proof device for a turntable trolley bracket, including a protective cover assembly, a fixing assembly, a sealing assembly and a pneumatic protection assembly. The protective cover assembly includes a housing and a perforated rubber plate, the perforated rubber plate being installed at the opening of the housing for the roller shaft head to pass through; The fixing components include a hinge, Velcro A, Velcro B, and a snap fastener. One end of the hinge is connected to the outer shell, and the other end is connected to the roller frame to realize the opening and closing of the outer shell. Velcro A is used to fix the perforated rubber plate to the outer shell, and Velcro B is used to fix the perforated rubber plate itself to facilitate disassembly and assembly. The snap fastener is used for a stable connection between the outer shell and the roller frame after they are closed. The sealing assembly includes a wear-resistant cloth, which is wrapped around the edge of the opening of the perforated rubber plate and fixed by Velcro C. An elastic element is provided at the other end, which is used to make the wear-resistant cloth fit tightly against the roller head. The air pressure protection component includes a quick-connect air hose connector, which is disposed on the housing and is used to connect an external air hose and introduce gas into the housing to create a positive pressure environment.

[0006] Preferably, the elastic element is a tension spring or a rubber band.

[0007] Preferably, the surface of the wear-resistant cloth that contacts the roller shaft is coated with lubricating oil to reduce friction.

[0008] Preferably, at least two hinges are provided and symmetrically distributed on the side where the outer shell connects to the roller frame to ensure the stability of the outer shell opening and closing process.

[0009] Preferably, at least one set of latches is provided and installed on the side of the housing away from the hinge to enhance the connection strength between the housing and the roller frame after closure.

[0010] Preferably, the quick-connect endotracheal connector adopts a quick-plug structure and has a sealing gasket at its interface to prevent gas leakage.

[0011] Compared with the traditional structure, the beneficial effects of this utility model are: 1. This utility model has a reasonable structural design. It utilizes the tearable and adhesive properties of Velcro to achieve flexible assembly and fixation of the various components of the protective cover. Combined with the opening and closing function of the hinge, there is no need to pre-install the protective cover before clamping the roller, which simplifies the clamping and installation process of the protective device and improves the ease of operation. At the same time, with the contraction characteristics of the tension spring or rubber band, the wear-resistant cloth can be tightly fitted to the shaft head with different diameter specifications. There is no need to customize and replace the protective cover according to the diameter of the shaft head, which greatly improves the versatility and adaptability of the device.

[0012] 2. This utility model has a good sand-proof effect. It initially blocks sand particles from entering through the physical shielding of the protective cover shell; then, the tight fit between the wear-resistant cloth and the shaft head fills the gap between the shaft head and the protective cover, forming a second line of defense; finally, combined with the positive pressure environment created by the gas introduced through the quick-connect air pipe, the pressure difference between the inside and outside fundamentally prevents sand particles from entering the interior of the protective cover. The synergistic effect of multiple protective measures significantly reduces the probability of sand and dust entering the mating area between the roller frame and the shaft head, effectively protecting the roller frame and the shaft head, avoiding roller surface abrasion, ensuring finished product quality, reducing production costs, and improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a roller bracket structure without a protective cover in the prior art. Figure 2 A schematic diagram of the roller bracket structure for installing the protective cover of this utility model; Figure 3 This is a schematic diagram showing the protective cover of this utility model in the open state; Figure 4 This is a schematic diagram of the protective cover structure of this utility model; Figure 5 for Figure 4 AA view; Figure 6for Figure 4 View from direction B; In the diagram: 1. Quick-connect endotracheal tube connector, 2. Outer shell, 3. Hinged hinge, 4. Perforated rubber plate, 5. Fastener, 6. Velcro A, 7. Tension spring or elastic band, 8. Abrasion-resistant cloth, 9. Velcro B, 10. Velcro C. Detailed Implementation

[0014] The present invention will be further described below.

[0015] See attached document Figure 2-6 A sand-proof device for a turntable trolley bracket, characterized in that it includes a protective cover assembly, a fixing assembly, a sealing assembly, and an air pressure protection assembly; The protective cover assembly includes a housing 2 and a perforated rubber plate 4, the perforated rubber plate 4 being installed at the opening of the housing 2 for the roller shaft head to pass through; The fixing components include a hinge 3, Velcro A6, Velcro B9, and a snap fastener 5. One end of the hinge 3 is connected to the outer shell 2, and the other end is connected to the roller frame, enabling the opening and closing of the outer shell 2. At least two hinges 3 are provided and symmetrically distributed on the side where the outer shell 2 connects to the roller frame to ensure the stability of the outer shell 2 during opening and closing. Velcro A6 is used to fix the perforated rubber plate 4 to the outer shell 2, and Velcro B9 is used to fix the perforated rubber plate 4 itself for easy assembly and disassembly. The snap fastener 5 provides a secure connection between the outer shell 2 and the roller frame after closure. At least one set of snap fasteners 5 is provided and installed on the side of the outer shell 2 away from the hinge 3 to enhance the connection strength between the outer shell 2 and the roller frame after closure.

[0016] The sealing assembly includes a wear-resistant cloth 8, which is wrapped around the edge of the opening of the perforated rubber plate 4 and fixed by Velcro C10. The other end is provided with an elastic element 7 such as a tension spring or rubber band to make the wear-resistant cloth 8 fit tightly against the roller shaft head. The surface of the wear-resistant cloth 8 that contacts the roller shaft head is coated with lubricating oil to reduce friction.

[0017] Because the air pressure of the sandblasting gun is very high during sandblasting, sand particles may still enter the protective cover through gaps. Therefore, an air pressure protection component is also installed. This air pressure protection component includes a quick-connect air hose connector 1, which is mounted on the outer casing 2. It connects to an external air hose and introduces gas into the casing 2 to create a positive pressure environment. The pressure inside the protective cover is higher than the outside pressure, making it less likely for sand particles to enter. The quick-connect air hose connector 1 adopts a quick-plug structure, and its interface is equipped with a sealing gasket to prevent gas leakage.

[0018] In practice, before clamping the rollers, since the protective cover is connected to the roller frame via the hinge 3 and the perforated rubber plate 4 has an open design, there is no need to disassemble or install the protective cover in advance. The roller with the internal thread shaft head can be clamped onto the roller bracket directly according to the conventional process, ensuring the convenience of the clamping operation.

[0019] After the rollers are clamped, rotate the protective cover shell 2 around the hinge 3 so that the shell 2 covers the area where the bracket rollers and the shaft head meet. Then, adjust and fix the perforated rubber plate 4 to the shell 2 using the Velcro A6 on the outer ring, and then fix the perforated rubber plate 4 itself using the Velcro B9. Finally, fasten the buckle 5 to ensure that the protective cover shell 2 is firmly connected to the roller frame, thus initially achieving protection for this area.

[0020] The wear-resistant cloth 8, wrapped around the edge of the opening in the rubber plate, is secured in position using Velcro C10. The tension of the spring or elastic band at the other end ensures the cloth 8 adheres tightly to the shaft head surface, filling the gap between the shaft head and the opening in the rubber plate 4, preventing sand particles from entering. Simultaneously, a suitable amount of lubricating oil is applied to the contact area between the wear-resistant cloth 8 and the shaft head to reduce frictional resistance during shaft rotation and minimize wear.

[0021] After completing the sealing operation, connect the external air pipe to the quick-connect fitting 1 on the outer shell 2 of the protective cover, turn on the air source, and introduce gas into the protective cover. This makes the air pressure inside the protective cover higher than the air pressure of the external sandblasting environment, forming positive pressure protection. Even if a small amount of sand particles breaks through the external sealing gap, they will be blocked outside the protective cover under the action of the air pressure difference, further improving the sandproof effect.

[0022] The above embodiments of this utility model are merely examples to clearly illustrate this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by each claim.

Claims

1. A sand-proof device for a turntable trolley bracket, characterized in that: Includes protective cover assembly, fixing assembly, sealing assembly and air pressure protection assembly; The protective cover assembly includes a housing (2) and a perforated rubber plate (4), the perforated rubber plate (4) being installed at the opening of the housing (2) for the roller shaft head to pass through; The fixing components include a hinge (3), Velcro A (6), Velcro B (9), and a snap fastener (5). One end of the hinge (3) is connected to the outer shell (2), and the other end is connected to the roller frame to realize the opening and closing of the outer shell (2). Velcro A (6) is used to fix the perforated rubber plate (4) to the outer shell (2). Velcro B (9) is used to fix the perforated rubber plate (4) itself to facilitate disassembly and assembly. The snap fastener (5) is used for a stable connection between the outer shell (2) and the roller frame after they are closed. The sealing assembly includes a wear-resistant cloth (8), which is wrapped around the edge of the opening of the perforated rubber plate (4) and fixed by Velcro C (10). An elastic element (7) is provided at the other end, which is used to make the wear-resistant cloth (8) fit tightly against the roller shaft head. The air pressure protection component includes a quick-connect fitting (1) for air pipes. The quick-connect fitting (1) is disposed on the housing (2) and is used to connect an external air pipe and introduce gas into the housing (2) to create a positive pressure environment.

2. The sand-proof device for the turntable trolley bracket according to claim 1, characterized in that: The elastic element (7) is configured as a tension spring or a rubber band.

3. The sand-proof device for the turntable trolley bracket according to claim 1, characterized in that: The surface of the abrasion-resistant cloth (8) that contacts the roller shaft is lubricated to reduce friction.

4. The sand-proof device for the turntable trolley bracket according to claim 1, characterized in that: At least two hinges (3) are provided and are symmetrically distributed on the side where the outer shell (2) is connected to the roller frame to ensure the stability of the opening and closing process of the outer shell (2).

5. The sand-proof device for the turntable trolley bracket according to claim 1, characterized in that: The latch (5) is provided in at least one set and is installed on the side of the housing (2) away from the hinge (3) to enhance the connection strength between the housing (2) and the roller frame after closure.

6. The sand-proof device for the turntable trolley bracket according to claim 1, characterized in that: The quick-connector (1) for the endotracheal tube adopts a quick-plug structure and is equipped with a sealing gasket at its interface to prevent gas leakage.

Images