Wear-resistant combined screw

Abstract

The utility model discloses a wear-resistant combined screw, and relates to the technical field of fasteners. Comprising a combined cap, a screw rod body and a folding cylinder, a through groove is formed in the screw rod body in a penetrating mode, a storage groove is formed in the bottom end of the combined cap, a connecting plate is arranged in the folding cylinder, and a spring is arranged at the top end of the connecting plate. According to the screw, by arranging the folding cylinder and other components, in the actual use process of the screw, after the connecting plate and the folding cylinder make contact with a fixing body, elasticity in the through groove is extruded to deform and contract, the connecting plate moves upwards in the through groove, at the moment, the folding cylinder outside the screw rod body is gradually folded and stored, and the use length is shortened; and the folding cylinder can be used for covering and protecting the screw exposed in the external air, the situation that the exposed screw is in contact with the air or the external environment for a long time, so that the combined screw is rusted and the like is avoided, and the service life of the screw is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a wear-resistant combined screw. Background Art

[0002] Screws are commonly used mechanical fasteners used to connect or fix two or more parts. The head of the screw usually has a notch so that it can be screwed in or out with a screwdriver. There are many types of screws, which are classified according to different properties such as use, material, head shape, thread type, etc. Wear-resistant combination screws are suitable for various occasions that need to withstand long-term friction and wear due to their excellent wear resistance, such as heavy machinery, mining equipment, construction and automobile manufacturing industries. These screws can extend the maintenance cycle and reduce the failure rate caused by wear while ensuring the strength of the connection.

[0003] At present, in actual use, the existing wear-resistant combination screws may not be able to be completely hidden during use. The screws exposed to the outside air are in contact with the air or the external environment for a long time, which easily causes the combination screws to rust and the like, and easily reduces the service life of the screws. In order to solve this technical problem, the utility model proposes a wear-resistant combination screw. Utility Model Content

[0004] The main purpose of the utility model is to provide a wear-resistant combined screw, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A wear-resistant combination screw comprises a combination cap, a screw rod and a folding cylinder, wherein the screw rod is arranged at the bottom end of the combination cap, a through groove is formed inside the screw rod, a receiving groove is formed at the bottom end of the combination cap, and the receiving groove is in the form of a circular ring groove and is located outside the screw rod, the top end of the folding cylinder is arranged inside the receiving groove, and the folding cylinder is located outside the screw rod, the folding cylinder is made of plastic material, a connecting plate is arranged inside the folding cylinder, and the connecting plate movably passes through the inside of the through groove, a spring is arranged at the top end of the connecting plate, and the top end of the spring is connected to the bottom end of the combination cap.

[0007] Preferably, a threaded hole is provided inside the combination cap, a plum blossom interface is provided inside the combination cap, and the plum blossom interface is located below the threaded hole.

[0008] Preferably, a through hole No. 1 is formed through the interior of the combination cap, and the through hole No. 1 is located above the spring.

[0009] Preferably, a rubber cylinder is arranged inside the threaded hole, and the rubber cylinder is threadedly connected to the threaded hole. A second through hole is penetratingly opened inside the rubber cylinder, and the second through hole communicates with the inside of the first through hole.

[0010] Preferably, a filling port is penetratingly opened inside the rubber cylinder, and a plugging column is arranged inside the filling port.

[0011] Preferably, both the rubber cylinder and the plugging column are made of rubber material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by arranging components such as a folding cylinder, during the actual use of the screw, as the screw rod spirally drills into the body to be fixed, as the screw rod continuously penetrates deeper into the fixation, after the connecting plate and the folding cylinder come into contact with the fixed body, the elasticity inside the through groove is squeezed and deformed and shrunk, causing the connecting plate to move upward inside the through groove. At this time, the folding cylinder outside the screw rod gradually folds and retracts to shorten the use length. If the screw rod completely penetrates into the fixed body, at this time, the folding cylinder is completely folded and retracted into the circular storage groove. The folding cylinder can be used to cover and protect the screw exposed to the external air, avoiding the situation that the exposed screw is in contact with the air or the external environment for a long time, which may cause the combined screw to rust, effectively improving the wear resistance of the screw, and thus improving its service life.

[0014] In the utility model, by arranging components such as a rubber cylinder, the filling port penetratingly opened inside the rubber cylinder can store an appropriate amount of lubricating oil or rust remover liquid in the rubber cylinder. The plugging column can block the filling port. After the rubber cylinder is installed in the threaded hole, when pressing the rubber cylinder, the lubricating oil or rust remover stored inside the rubber cylinder can enter the through groove through the second through hole and the first through hole. The through groove can make the lubricating oil or rust remover penetrate to the thread of the screw rod, facilitating the later disassembly of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of a wear-resistant combined screw of the utility model;

[0016] Figure 2 is a schematic diagram of the screw rod structure of a wear-resistant combined screw of the utility model;

[0017] Figure 3 is a schematic diagram of the cross-section of the combined cap and the screw rod of a wear-resistant combined screw of the utility model;

[0018] Figure 4 is a schematic diagram of the cross-section of the connecting plate and the folding cylinder of a wear-resistant combined screw of the utility model;

[0019] Figure 5 In a wear-resistant combined screw of the present utility model Figure 4 Schematic diagram of the enlarged local structure at A

[0020] In the figure: 1, combined cap; 2, threaded hole; 3, plum blossom interface; 4, first through hole; 5, rubber cylinder; 6, injection port; 7, second through hole; 8, plugging column; 9, screw rod body; 10, through groove; 11, spring; 12, connecting plate; 13, folding cylinder; 14, storage groove Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a wear-resistant combined screw

[0023] Comprising a combined cap 1, a screw rod body 9 and a folding cylinder 13, the screw rod body 9 is arranged at the bottom end of the combined cap 1, a through groove 10 is penetrated and opened inside the screw rod body 9, a storage groove 14 is opened at the bottom end of the combined cap 1, and the storage groove 14 is a circular groove located outside the screw rod body 9. The top end of the folding cylinder 13 is arranged inside the storage groove 14, and the folding cylinder 13 is located outside the screw rod body 9. The folding cylinder 13 is made of plastic material. A connecting plate 12 is arranged inside the folding cylinder 13, and the connecting plate 12 movably penetrates through the inside of the through groove 10. A spring 11 is arranged at the top end of the connecting plate 12, and the top end of the spring 11 is connected to the bottom end of the combined cap 1

[0024] The screw rod body 9 is fixedly arranged at the bottom end of the combined cap 1. A through groove 10 is penetrated and opened inside the screw rod body 9. The through groove 10 provides an installation space for the spring 11. The top end of the spring 11 is connected to the bottom end of the combined cap 1, and the bottom end of the spring 11 is connected to the top end of the connecting plate 12 penetrating inside the through groove 10. The spring 11 can elastically compress the connecting plate 12 at the lowest end of the through groove 10. Furthermore, both ends of the connecting plate 12 are connected inside the folding cylinder 13, and the top end of the folding cylinder 13 is connected to the top inner wall of the receiving groove 14. The elastic action of the spring 11 can elastically push the folding cylinder 13 to stretch out and be located outside the screw rod body 9. The folding cylinder 13 is made of a foldable and telescopic plastic cylinder. During the actual use of the screw, as the screw rod body 9 is spirally drilled into the body to be fixed, and as the screw rod body 9 continues to penetrate deeper into the fixation, after the connecting plate 12 and the folding cylinder 13 come into contact with the fixed body, the elasticity inside the through groove 10 will be squeezed and deformed and contracted, causing the connecting plate 12 to move upward inside the through groove 10. At this time, the folding cylinder 13 outside the screw rod body 9 gradually folds and retracts to shorten the use length. If the screw rod body 9 is completely penetrated into the fixed body, at this time, the folding cylinder 13 is completely folded and received in the circular receiving groove 14. The folding cylinder 13 can cover and protect the screw exposed to the external air, avoiding the situation that the exposed screw is in contact with the air or the external environment for a long time, which may cause the combined screw to rust, etc., effectively improving the service life of the screw.

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a wear-resistant combined screw;

[0026] A threaded hole 2 is opened inside the combined cap 1. A plum blossom interface 3 is opened inside the combined cap 1, and the plum blossom interface 3 is located below the threaded hole 2. A first through hole 4 is penetrated and opened inside the combined cap 1, and the first through hole 4 is located above the spring 11. A rubber cylinder 5 is arranged inside the threaded hole 2, and the rubber cylinder 5 is threadedly connected to the threaded hole 2. A second through hole 7 is penetrated and opened inside the rubber cylinder 5, and the second through hole 7 communicates with the inside of the first through hole 4. A material injection port 6 is penetrated and opened inside the rubber cylinder 5, and a plug column 8 is arranged inside the material injection port 6. Both the rubber cylinder 5 and the plug column 8 are made of rubber material.

[0027] The combination cap 1 and the screw rod body 9 are the main combined components of the screw. The threaded hole 2 opened at the top of the combination cap 1 provides an installation space for the rubber cylinder 5. The rubber cylinder 5 is threadedly connected to the threaded hole 2, which facilitates the disassembly and replacement of the damaged rubber cylinder 5 in the later stage. Before the screw is used, an external tool is inserted into the plum blossom interface 3 and rotated, which can make the screw rod body 9 rotate and penetrate into the fixed body. After the screw rod body 9 is threadedly connected to the fixed body, the rubber cylinder 5 can be threadedly connected to the threaded hole 2 for use. The inside of the rubber cylinder 5 is hollow. An appropriate amount of lubricating oil or rust remover liquid can be stored in the rubber cylinder 5 by using the injection port 6 penetrating through the inside of the rubber cylinder 5. The injection port 6 can be blocked by using the plug column 8. After the rubber cylinder 5 is installed in the threaded hole 2, at this time, the second through hole 7 penetrating through the bottom end of the rubber cylinder 5 is located above the first through hole 4, and the first through hole 4 and the second through hole 7 are in a through state. When the rubber cylinder 5 is pressed, the lubricating oil or rust remover stored inside the rubber cylinder 5 can enter the through groove 10 through the second through hole 7 and the first through hole 4. The through groove 10 can be used to make the lubricating oil or rust remover penetrate to the thread on the screw rod body 9, which is convenient for the later disassembly of the screw.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant combination screw, comprising a combination cap (1), a screw rod (9) and a folding cylinder (13), characterized in that: The screw rod body (9) is arranged at the bottom end of the combination cap (1); a through groove (10) is provided inside the screw rod body (9); a receiving groove (14) is provided at the bottom end of the combination cap (1), and the receiving groove (14) is an annular groove and is located outside the screw rod body (9); the top end of the folding cylinder (13) is arranged inside the receiving groove (14), and the folding cylinder (13) is located outside the screw rod body (9); the folding cylinder (13) is made of plastic material; a connecting plate (12) is provided inside the folding cylinder (13), and the connecting plate (12) movably passes through the inside of the through groove (10); a spring (11) is provided at the top end of the connecting plate (12), and the top end of the spring (11) is connected to the bottom end of the combination cap (1).

2. The wear-resistant combined screw according to claim 1, characterized in that: A threaded hole (2) is provided inside the combination cap (1), a plum blossom interface (3) is provided inside the combination cap (1), and the plum blossom interface (3) is located below the threaded hole (2).

3. The wear-resistant combined screw according to claim 2, characterized in that: A through hole (4) is formed through the interior of the assembly cap (1), and the through hole (4) is located above the spring (11).

4. The wear-resistant combined screw according to claim 3, characterized in that: A rubber tube (5) is arranged inside the threaded hole (2), and the rubber tube (5) is threadedly connected to the threaded hole (2). A second through hole (7) is provided inside the rubber tube (5), and the second through hole (7) is connected to the inside of the first through hole (4).

5. The wear-resistant combined screw according to claim 4, characterized in that: The rubber tube (5) is provided with an injection port (6) extending through the inside thereof, and a blocking column (8) is provided inside the injection port (6).

6. The wear-resistant combined screw according to claim 5, characterized in that: The rubber tube (5) and the blocking column (8) are both made of rubber material.

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