Wear-resistant fastener

Abstract

The utility model relates to the technical field of fasteners, in particular to a wear-resistant fastener which comprises a nut and a screw fixedly connected with the nut, the screw is in threaded connection with a nut, a first limiting groove is formed in the face, connected with the screw, of the nut, a first rubber pad is arranged in the first limiting groove, and a second rubber pad is arranged in the first limiting groove. A second limiting groove is formed in the face, opposite to the nut, of the nut, a second rubber pad is arranged in the second limiting groove, a plurality of oil injection holes are formed in the side edge of the nut in an annular array mode, a plurality of oil outlet holes are formed in the connecting position of the nut and the threaded rod in an annular array mode, and the oil injection holes are communicated with the oil outlet holes. By arranging the rubber pad, the friction between the bolt and a fastening object can be increased, and the phenomenon that the bolt slips due to the fact that excessive force is applied can be avoided; and the bolt can be lubricated through the oil injection hole, so that abrasion is reduced.

Description

Technical Field

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

[0002] Fasteners are a general term for a type of mechanical parts used to fasten two or more parts (or components) into a whole. They are a very widely used type of mechanical parts with a wide variety of varieties and specifications, different performances and uses, and a high degree of standardization, serialization, and generalization.

[0003] In some special working environments, there are special requirements for the performance of fasteners. For example, in environments with low temperatures and corrosive liquids, fasteners are required to have corrosion resistance, high strength and wear resistance on the basis of ensuring mechanical properties. The strength of fasteners on the market is generally good, but the performance of corrosion resistance and wear resistance varies. Therefore, it is necessary to redesign fasteners in a targeted manner to reduce the wear of fasteners and extend their service life. Utility Model Content

[0004] In view of this, the utility model aims at the deficiencies of the prior art and proposes a wear-resistant fastener, aiming to solve the problems of insufficient corrosion resistance and wear resistance.

[0005] The utility model provides a wear-resistant fastener, comprising: a nut and a screw rod fixedly connected to the nut, a nut being threadedly connected to the screw rod, a first limiting groove being provided on a side of the nut connected to the screw rod, a first rubber pad being provided in the first limiting groove, a second limiting groove being provided on a side of the nut opposite to the nut, a second rubber pad being provided in the second limiting groove, a plurality of oil injection holes being provided in an annular array on the side edge of the nut, a plurality of oil outlet holes being provided in an annular array at the connection between the nut and the screw rod, and the oil injection holes being communicated with the oil outlet holes.

[0006] In some embodiments of the present application, a plurality of flow limiting grooves are equidistantly provided on the outer circumference of the screw, the flow limiting grooves are connected to the oil outlet hole, and the length of each flow limiting groove is different.

[0007] In some embodiments of the present application, the surfaces of the first rubber pad and the second rubber pad are both provided with wavy raised lines.

[0008] In some embodiments of the present application, the nut includes a first flange plate connected to the screw rod and a hexagonal ridge fixed on the first flange plate, and the first limiting groove and the oil filling hole are formed on the flange plate.

[0009] In some embodiments of the present application, the nut includes a hexagonal nut body and a second flange plate fixedly connected to the hexagonal nut body, and the second limiting groove is formed on the second flange plate.

[0010] In some embodiments of the present application, the surface of the nut is coated with a first nickel plating layer, the surface of the screw is coated with a second nickel plating layer, and the surface of the nut is coated with a third nickel plating layer.

[0011] In some embodiments of the present application, the surface of the first nickel-plated layer is coated with a first epoxy resin layer, the surface of the second nickel-plated layer is coated with a second epoxy resin layer, and the surface of the third nickel-plated layer is coated with a third epoxy resin layer.

[0012] The utility model provides a nut and a nut with a flange plate, which is convenient for installing a rubber pad; the rubber pad can be provided to increase the friction between the bolt and the object to be fastened, and when force is applied to the nut, the friction force generated between the rubber pad and the fastened object acts as a reaction force, which can avoid thread slippage caused by excessive force when twisting the nut; the oil injection hole and the flow limiting groove are provided, and when the bolt is disassembled, lubricating oil is injected through the oil injection hole, and the lubricating oil flows into the flow limiting groove through the oil outlet hole, and finally flows to the thread on the screw rod to play a lubricating role, thereby reducing the friction between the screw rod and the object to be fastened; each flow limiting groove has a different length, and the entire screw rod can be lubricated more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A front view of a wear-resistant fastener provided by an embodiment of the utility model;

[0014] Figure 2 A cross-sectional view of a wear-resistant fastener provided by an embodiment of the utility model;

[0015] Figure 3 A top view of a nut provided in an embodiment of the utility model;

[0016] Figure 4 A bottom view of a nut provided in an embodiment of the utility model without a rubber pad installed;

[0017] Figure 5 A bottom view of a nut mounted rubber pad provided in an embodiment of the utility model;

[0018] Figure 6 A front view of a nut provided in an embodiment of the utility model;

[0019] Figure 7 A top view of a nut provided in an embodiment of the utility model without a rubber pad installed;

[0020] Figure 8 A top view of a nut mounting rubber pad provided in an embodiment of the utility model.

[0021] Among them: 100, nut; 110, hexagonal ridge; 120, first flange plate; 121, oil filling hole; 122, oil outlet hole; 130, first limiting groove; 140, first rubber pad; 200, screw; 210, flow limiting groove; 300, nut; 310, hexagonal nut body; 320, second flange plate; 330, second limiting groove; 340, second rubber pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0025] In the description of this application, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] like Figure 1-7As shown, a wear-resistant fastener includes a nut 100, a screw rod 200 and a nut 300. The nut 100 is fixedly connected to the screw rod 200 and is designed as an integral whole. The screw rod 200 is provided with an external thread, and the nut 300 is provided with an internal thread. The nut 300 is threadedly connected to the screw rod 200. A first limiting groove 130 is provided on the side where the nut 100 is connected to the screw rod 200, and a first rubber pad 140 is installed in the first limiting groove 130. A second limiting groove 330 is provided on the side of the nut 300 opposite to the nut 100, and a second rubber pad 340 is installed in the second limiting groove 330. By providing limiting grooves on the nut 100 and the nut 300 and installing rubber pads in the limiting grooves, the friction between the bolt and the fastened object can be increased. When the object to be fastened needs to be installed, the nut 300 is rotated until it is tightened. After the rubber pad is tightly fitted to the fastened object, the friction force generated between the rubber pad and the fastened object acts as a reaction force to the applied force, thereby avoiding thread slippage caused by excessive force when twisting the nut 300.

[0027] like Figure 5 and Figure 8 As shown, in some embodiments of the present application, wavy raised lines are provided on the surfaces of the first rubber pad 140 and the second rubber pad 340. By providing wavy raised lines on the rubber pads, the friction between the bolt and the fastened object can be further increased.

[0028] like Figure 1-5 As shown, in some embodiments of the present application, a plurality of oil injection holes 121 are provided in an annular array on the side of the nut 100, which may be five, six, seven or eight. A plurality of oil outlet holes 122 are provided in an annular array at the connection between the nut 100 and the screw 200. The number of the oil outlet holes 122 and the oil injection holes 121 is the same, and the oil injection holes 121 and the oil outlet holes 122 are connected to form a through hole. A plurality of flow limiting grooves 210 are provided on the periphery of the screw 200. The number of the flow limiting grooves 210 and the oil outlet holes 122 is the same, and each flow limiting groove 210 is connected to an oil outlet hole 122. When removing the bolt, lubricating oil is injected through the oil filling hole 121, and the lubricating oil flows into the flow limiting groove 210 of the screw 200 through the oil outlet hole 122, and finally flows onto the thread, lubricating the screw 200, thereby reducing the friction between the screw 200 and the fastened object, making it easy to remove the bolt, thereby reducing the degree of wear on the threads on the screw 200 and the nut 300.

[0029] In some embodiments of the present application, the length of each flow limiting groove 210 is different. For example, if there are six oil injection holes 121 and six oil outlet holes 122, then there are also six flow limiting grooves 210. Taking the screw 200 with a length of 6CM as an example, the lengths of the six flow limiting grooves 210 are 2cm, 2.5cm, 3cm, 3.5cm, 4cm, and 4.5cm. The length of the flow limiting groove 210 and the difference in length between the flow limiting grooves 210 can be set according to the screws 200 of different lengths. The flow rate of the lubricating oil in the vertical flow limiting groove 210 is relatively fast. By setting the flow limiting groove 210 to different lengths, after the lubricating oil is injected into the oil injection hole 121, the lubricating oil in each flow limiting groove 210 lubricates a section of the screw, and the entire screw 200 can be quickly lubricated, thereby improving work efficiency.

[0030] like Figure 3-5 As shown, in some embodiments of the present application, the nut 100 includes a hexagonal ridge 110 and a first flange plate 120 fixed on the hexagonal ridge 110, the hexagonal ridge 110 and the first flange plate 120 are integrally formed, the screw 200 is connected to the first flange plate 120, the oil filling hole is opened on the side of the first flange plate 120, the oil outlet hole 122 is opened at the connection between the flange plate and the screw 200, the first limiting groove 130 is opened on the bottom surface of the flange plate, and the cross-section of the flange plate is large, which is convenient for opening a groove to fix the rubber pad.

[0031] like Figure 6-8 As shown, in some embodiments of the present application, the nut 300 includes a hexagonal nut 300 body and a second flange plate 320, the hexagonal nut 300 and the second flange plate 320 are integrally formed, a second limiting groove 330 is opened on the second flange plate 320, and a second rubber pad 340 is installed in the second limiting groove 330.

[0032] In some embodiments of the present application, a first nickel plating layer is coated on the surface of the nut 100, a second nickel plating layer is coated on the surface of the screw 200, and a third nickel plating layer is coated on the surface of the nut 300. The nickel plating layer can increase the overall hardness of the bolt, effectively protect the surface of the screw 200 from corrosion, oxidation and other environmental erosion, and make it more wear-resistant.

[0033] In some embodiments of the present application, the first nickel-plated layer is coated with a first epoxy resin layer, the second nickel-plated layer is coated with a second epoxy resin layer, and the third nickel-plated layer is coated with a third epoxy resin layer. The epoxy resin layer can fill the tiny pores on the surface of the screw 200 to prevent liquid, gas and impurities from penetrating, thereby reducing the wear of the screw 200 and extending its service life.

[0034] A wear-resistant fastener in the above embodiment, when it is necessary to fix the object to be fastened, the screw rod 200 passes through the object to be fastened, the first flange plate on the nut 100 fits with the object to be fastened, and then the nut 300 body is rotated until it is tightened, the second flange plate 320 fits with the object to be fastened, and the fastener is fixed. When a rotational force is applied to the nut 300, the rubber pad on the flange plate fits with the object to be fastened to generate friction, and the friction and the applied rotational force form a reaction force, which can avoid thread slippage caused by excessive force when rotating the nut 300. When it is necessary to disassemble the fastened object, lubricating oil is injected through the oil filling hole 121, and the lubricating oil flows into the flow limiting groove 210 of the screw 200 through the oil outlet hole 122, and finally flows onto the thread. The flow limiting grooves 210 have different lengths. The lubricating oil in each flow limiting groove 210 lubricates a section of the screw 200, and can quickly lubricate the entire screw 200, thereby reducing the friction between the screw 200 and the fastened object, making it easy to disassemble the bolt and reduce the wear of the threads on the screw 200 and the nut 300.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A wear-resistant fastener, comprising a nut and a screw rod fixedly connected to the nut, wherein a nut is threadedly connected to the screw rod, characterized in that: A first limiting groove is provided on the side where the nut is connected to the screw rod, and a first rubber pad is provided in the first limiting groove; a second limiting groove is provided on the side of the nut opposite to the nut, and a second rubber pad is provided in the second limiting groove; a plurality of oil filling holes are provided in a circular array on the side of the nut, and a plurality of oil outlet holes are provided in a circular array at the connection between the nut and the screw rod, and the oil filling holes are connected to the oil outlet holes.

2. The wear-resistant fastener according to claim 1, characterized in that: A plurality of flow limiting grooves are equidistantly arranged on the outer circumference of the screw rod, the flow limiting grooves are communicated with the oil outlet holes, and the length of each flow limiting groove is different.

3. The wear-resistant fastener according to claim 1 or 2, characterized in that: The surfaces of the first rubber pad and the second rubber pad are both provided with wavy raised lines.

4. The wear-resistant fastener according to claim 1 or 2, characterized in that: The nut includes a first flange plate connected to the screw rod and a hexagonal ridge fixed on the first flange plate. The first limiting groove and the oil filling hole are formed on the flange plate.

5. The wear-resistant fastener according to claim 4, characterized in that: The nut comprises a hexagonal nut body and a second flange plate fixedly connected to the hexagonal nut body, and the second limiting groove is formed on the second flange plate.

6. The wear-resistant fastener according to claim 1, characterized in that: The surface of the nut is coated with a first nickel plating layer, the surface of the screw is coated with a second nickel plating layer, and the surface of the nut is coated with a third nickel plating layer.

7. The wear-resistant fastener according to claim 6, characterized in that: The surface of the first nickel-plated layer is coated with a first epoxy resin layer, the surface of the second nickel-plated layer is coated with a second epoxy resin layer, and the surface of the third nickel-plated layer is coated with a third epoxy resin layer.

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