Heat-resistant alloy fastener for high-temperature environment

Abstract

The utility model discloses a heat-resistant alloy fastener for a high-temperature environment, which comprises a screw rod, a screw cap is arranged at the left end of the screw rod, a nut is in threaded connection with the right end of the outer side of the screw rod, and the heat-resistant alloy fastener further comprises a protection mechanism; the protection mechanism comprises a groove, a rotating shaft, a hollow shell, a sliding rod, a clamping groove and a clamping column, the groove is formed in the outer edge of the right side of the nut, the hollow shell is rotationally connected into the groove through the rotating shaft, the sliding rod is slidably connected into the hollow shell, and the clamping groove is formed in the lower right end of the sliding rod. By selecting reasonable materials and arranging a high-temperature-resistant coating, the high-temperature deformation resistance of the device is improved, the service life of the device in a high-temperature environment is prolonged, meanwhile, the device can perform thread loosening sliding locking treatment on a thread fastening part through a transmission element, and the service life of the device is prolonged. And the probability that the thread fastening part of the device looses and slides under the interference of an external environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely for a kind of heat-resistant alloy fastener for high temperature environment. BACKGROUND

[0002] Fastener is used for fastening connection and is widely used one kind of mechanical parts, and use industry is widely, including energy, electronics, electrical apparatus, machinery, chemical industry, metallurgy, mould, hydraulic pressure and so on, in various machinery, equipment, vehicle, ship, railway, bridge, building, structure, tool, instrument, chemical industry, instrument and article etc., can see various fasteners, it is the most widely used mechanical basic piece, in prior art: the patent of authorized publication number CN 208870879 U discloses a kind of fastener, including screw rod and nut, nut is connected with screw rod, wherein the lower end of screw rod is equipped with the connecting component for being quickly locked in the opening of installation body, the width of opening is greater than the width of connecting component, the edge of connecting component is rotated and buckled in the edge of opening, so that connecting component is placed on installation body, the beneficial effects of the utility model are: the edge of connecting component is rotated and buckled in the edge of installation body, so that connecting component is placed on installation body, to facilitate installation, however, the fastener itself material is limited, deformation can be generated in high temperature condition, leading to reduce service life itself, while the threaded connecting component is in vibration environment for a long time during the use of device, is interfered by external vibration environment, threaded connecting part can appear loose and slip phenomenon, therefore, we propose a kind of heat-resistant alloy fastener for high temperature environment. UTILITARY MODEL CONTENT

[0003] The utility model solves the technical problem to overcome the existing defects, provide a kind of heat-resistant alloy fastener for high temperature environment, the device is through selecting reasonable material and setting high-temperature-resistant coating, to improve the high-temperature-resistant deformation performance of device itself, to improve the service life of device itself in high temperature environment, while device can be carried out threaded loose and slip lock dead handling to threaded fastening part by transmission element, reduce the probability that threaded fastening part of device appears loose and slip under external environment interference, can effectively solve the problems in background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of heat-resistant alloy fastener for high temperature environment, including screw rod, the left end of screw rod is equipped with screw cap, the outside right end of screw rod is connected with nut by screwing, further include protection mechanism;

[0005] The protection mechanism comprises a groove, a rotating shaft, a hollow shell, a sliding rod, a clamping groove and a clamping column, the groove is arranged at the right outer edge of the nut, the inside of the groove is rotationally connected with the hollow shell through the rotating shaft, the inside of the hollow shell is slidingly connected with the sliding rod, the right lower end of the sliding rod is provided with the clamping groove, the right side of the screw rod is provided with the clamping column which is uniformly distributed, and the clamping groove and the clamping column are matched and installed;

[0006] Wherein: the outer side of the screw rod, the screw cap and the nut is provided with a high-temperature-resistant glass coating, the device selects reasonable materials and sets the high-temperature-resistant coating, so that the high-temperature-resistant deformation performance of the device itself is improved, and the service life of the device itself in a high-temperature environment is improved. Meanwhile, the device can perform thread relaxation sliding lock treatment on the thread fastening part through the transmission element, so that the probability of relaxation sliding of the thread fastening part of the device under external environmental interference is reduced.

[0007] Further, the outer side of the screw rod movably sleeves two gaskets, and the screw cap and the nut are matched and installed with the adjacent gaskets. The contact surface between the inner nut and the screw cap of the heat-resistant alloy fastener and the two workpieces is protected from being scratched by extrusion.

[0008] Further, the screw rod is a nickel alloy screw rod, the screw cap is a nickel alloy screw cap, and the nut is a nickel alloy nut. By selecting a reasonable fastener material, the high-temperature-resistant deformation performance of the device itself is improved.

[0009] Further, the protection mechanism further comprises a limiting seat, and the limiting seat is arranged at the right end of the clamping column and matched and installed with the sliding rod. The sliding rod in the heat-resistant alloy fastener is limited in horizontal movement after being clamped.

[0010] Further, the protection mechanism further comprises a high-temperature-resistant rubber ring, and the high-temperature-resistant rubber ring is arranged at the left side of the limiting seat. After the sliding rod in the heat-resistant alloy fastener is clamped with the clamping column, external vibration interference force received by the sliding rod is absorbed, so that the clamping interference of the vibration energy on the two is eliminated.

[0011] Further, the outer side of the high-temperature-resistant glass coating is provided with a tungsten carbide coating, so as to avoid damage to the high-temperature-resistant glass coating attached to the surface of the device due to mutual thread extrusion sliding of the thread connection part during the process of connecting the workpiece by the fastener.

[0012] Further, an inner hexagonal groove is formed in the left side of the screw cap, so as to improve the tool range available for the screw rotation operation.

[0013] Compared with the prior art, the heat-resistant alloy fastener used in a high-temperature environment has the following advantages:

[0014] 1、The device is not easy to deform in high-temperature environment, and the service life of the device in high-temperature environment is improved by selecting nickel alloy material and setting high-temperature-resistant glass coating and tungsten carbide coating when the fastener is used.

[0015] 2、The threaded fastening part can be treated by thread loosening and sliding locking through rotation clamping by the hollow shell, the sliding rod, the clamping groove, the clamping column, the high-temperature-resistant rubber ring and the limiting seat, so that the probability of loosening and sliding of the threaded fastening part of the device under external environmental interference is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the screw rod of the utility model;

[0018] Figure 3 It is a structural schematic view of the nut of the utility model;

[0019] Figure 4 It is a structural schematic view of the utility model at A.

[0020] In the figure: 1 screw rod, 2 nut, 3 nut, 4 gasket, 5 protection mechanism, 51 groove, 52 rotating shaft, 53 hollow shell, 54 sliding rod, 55 clamping groove, 56 clamping column, 57 high-temperature-resistant rubber ring, 58 limiting seat, 6 high-temperature-resistant glass coating, 7 tungsten carbide coating, 8 internal hexagonal groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4The embodiment provides a technical scheme: a heat-resistant alloy fastener for high-temperature environment, which comprises a screw rod 1, the left end of the screw rod 1 is provided with a nut 2, the outer right end of the screw rod 1 is threadedly connected with a nut 3, the outer side of the screw rod 1 is movably sleeved with two gaskets 4, the nut 2 and the nut 3 are movably sleeved with the adjacent gaskets 4, the left side of the nut 2 is provided with an internal hexagonal groove 8, when the heat-resistant alloy fastener is used to connect and fix two workpieces, firstly, the screw rod 1 is inserted through the connecting holes of the two workpieces, at the same time, the gaskets 4 are sleeved on the corresponding positions of the outer side of the screw rod 1, then the nut 3 is rotated along the outer right end of the screw rod 1, at the same time, the hollow shell 53 is pushed away from the center of the device around the axis of the rotating shaft 52, so that the sliding rod 54 in the hollow shell 53 does not interfere with the screw thread fixing of the nut 3 and the screw rod 1 during the screw thread connection, when the nut 3 and the screw rod 1 are screw-threadedly connected and tightened, the gaskets 4 are used to protect the contact surfaces between the nut 3, the nut 2 and the two workpieces from being scratched, the internal hexagonal groove 8 is used to facilitate the dismounting of the screw rod 1 by using the internal hexagonal tool, the range of tools that can be used for the operation of the screw rod 1 is widened, and the heat-resistant alloy fastener further comprises a protection mechanism 5.

[0023] The protection mechanism 5 comprises a groove 51, a rotating shaft 52, a hollow shell 53, a sliding rod 54, a clamping groove 55 and a clamping column 56, the groove 51 is arranged on the right outer edge of the nut 3, the groove 51 is movably connected with the hollow shell 53 through the rotating shaft 52, the hollow shell 53 is movably connected with the sliding rod 54, the right lower end of the sliding rod 54 is provided with the clamping groove 55, the right side of the screw rod 1 is provided with the clamping columns 56 which are uniformly distributed, the clamping groove 55 is movably sleeved with the clamping columns 56, the protection mechanism 5 further comprises limiting seats 58, the limiting seats 58 are arranged at the right ends of the clamping columns 56, the limiting seats 58 are movably sleeved with the sliding rod 54, the protection mechanism 5 further comprises heat-resistant rubber rings 57, the heat-resistant rubber rings 57 are arranged at the left sides of the limiting seats 58, the sliding rod 54 is horizontally slid along the hollow shell 53, at the same time, the hollow shell 53 is pushed to the center of the device around the axis of the rotating shaft 52, so that the clamping groove 55 on the sliding rod 54 is clamped on the corresponding clamping column 56, thereby locking and limiting the loosening of the nut 3 in the later period, the left side surface of the limiting seat 58 is movably sleeved with the right side surface of the screw rod 1, thereby limiting the horizontal movement of the clamping position of the sliding rod 54, the heat-resistant rubber rings 57 are made of fluorine rubber, the fluorine rubber has heat resistance and can be used in the environment of-30℃-+250℃, is resistant to strong oxidants, oil and acid and alkali, and can be used in a high-temperature environment, the external vibration interference force received by the sliding rod 54 and the clamping column 56 after clamping is absorbed by using the elasticity and damping characteristics of the rubber material, thereby eliminating the clamping interference of the vibration energy on the two, the device can lock and release the screw thread connection position through the transmission element, thereby reducing the probability of loosening and sliding of the screw thread connection position of the device under the external environmental interference.

[0024] The outer side of the screw rod 1, the screw cap 2 and the nut 3 is provided with a high-temperature-resistant glass coating 6, the screw rod 1 is a nickel alloy screw rod 1, the screw cap 2 is a nickel alloy screw cap, the nut 3 is a nickel alloy nut, the outer side of the high-temperature-resistant glass coating 6 is provided with a tungsten carbide coating 7, the screw rod 1, the screw cap 2 and the nut 3 are all made of nickel alloy material, the nickel alloy has good oxidation resistance and can withstand high temperature of 1800-2000 degrees Fahrenheit, so that the fastener can be used in a high-temperature environment, the high-temperature-resistant glass coating 6 has good high-temperature stability and mechanical properties, it can resist high-temperature oxidation, chemical corrosion and thermal shock and other harsh environments, by spraying the outer surface of the fastener, the high-temperature-resistant and corrosion-resistant properties of the fastener itself are improved, so as to further improve the service life of the device in a high-temperature environment, the tungsten carbide coating 7 is one of the hardest carbon-based compounds, compared with tool steel, tungsten carbide has excellent hardness characteristics, compared with technical ceramics, it has excellent toughness, the tungsten carbide coating 7 itself has good wear resistance, by spraying the outer side of the high-temperature-resistant glass coating 6 of the device with the tungsten carbide coating 7, the high-temperature-resistant glass coating 6 attached to the surface of the device during the process of connecting workpieces by the fastener is prevented from being damaged due to mutual thread extrusion and sliding of the thread connection parts, the device selects reasonable materials and sets a high-temperature-resistant coating, so as to improve the high-temperature-resistant deformation performance of the device itself, and further improve the service life of the device itself in a high-temperature environment.

[0025] The working principle of the heat-resistant alloy fastener for high-temperature environment is as follows: when the heat-resistant alloy fastener is used to connect and fix two workpieces, first, the screw rod 1 is inserted through the connecting holes on the two workpieces, at the same time, the gasket 4 is sleeved on the corresponding position on the outer side of the screw rod 1, then the nut 3 is rotated along the right end of the outer side of the screw rod 1, and the hollow shell 53 is pushed away from the center of the device around the axis of the rotating shaft 52, so as to avoid the interference of the sliding rod 54 sliding in the hollow shell 53 on the thread fixing of the nut 3 and the screw rod 1 during the thread connection, when the nut 3 and the screw rod 1 are threadedly connected and tightened, the gasket 4 is used to protect the contact surface between the nut 3, the nut 2 and the two workpieces from being scratched, then the sliding rod 54 is horizontally slid along the hollow shell 53, and the hollow shell 53 is pushed to move towards the center of the device around the axis of the rotating shaft 52, so that the clamping groove 55 on the sliding rod 54 is clamped on the corresponding clamping column 56, thereby locking and limiting the loosening of the nut 3 in the later period, the left side surface of the limiting seat 58 is matched with the right side surface of the screw rod 1, thereby limiting the horizontal movement of the clamping part of the sliding rod 54, the high-temperature-resistant rubber ring 57 is made of fluorine rubber, the fluorine rubber has high-temperature resistance and can be used in the environment of-30℃ to +250℃, is resistant to strong oxidizing agents, oil and acid and alkali, and can be used in a high-temperature environment, the elasticity and damping characteristics of the rubber material are used to absorb the external vibration interference force after the clamping of the sliding rod 54 and the clamping column 56, so as to eliminate the clamping interference of the vibration energy on the two, the internal hexagonal groove 8 is convenient for the disassembly and assembly of the screw rod 1 by the nut 2 and the internal hexagonal tool, the range of tools that can be used for the operation of the screw rod 1 is widened, the screw rod 1, the nut 2 and the nut 3 are all made of nickel alloy material, the nickel alloy has good oxidation resistance and can withstand high temperature of 1800-2000 degrees Fahrenheit, so that the fastener can be used in a high-temperature environment, the high-temperature-resistant glass coating 6 has good high-temperature stability and mechanical properties, can resist high-temperature oxidation, chemical corrosion and thermal shock and other harsh environments, and the high-temperature-resistant glass coating 6 is sprayed on the outer surface of the fastener, so as to improve the high-temperature resistance and corrosion resistance of the fastener itself, thereby further improving the service life of the device in a high-temperature environment, the tungsten carbide coating 7 is one of the hardest carbon-based compounds, has excellent hardness characteristics compared with tool steel, has excellent toughness compared with technical ceramics, the tungsten carbide coating 7 itself has good wear resistance, the tungsten carbide coating 7 is sprayed on the outer side of the high-temperature-resistant glass coating 6 of the device, so as to avoid the damage of the high-temperature-resistant glass coating 6 attached to the surface of the device caused by the mutual thread extrusion and sliding of the thread connection part during the connection of the fastener and the workpiece.

[0026] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion in the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A heat-resistant alloy fastener for high-temperature environments, comprising a screw rod (1), the left end of the screw rod (1) being provided with a screw cap (2), and the outer right end of the screw rod (1) being threadedly connected with a nut (3), characterized in that: The protection mechanism (5) is further provided; The protection mechanism (5) comprises a groove (51), a rotating shaft (52), a hollow shell (53), a sliding rod (54), a clamping groove (55) and a clamping column (56). The groove (51) is arranged at the right outer edge of the nut (3). The hollow shell (53) is rotatably connected to the inside of the groove (51) through the rotating shaft (52). The sliding rod (54) is slidably connected to the inside of the hollow shell (53). The clamping groove (55) is arranged at the lower right end of the sliding rod (54). The clamping column (56) is uniformly arranged at the right side of the screw rod (1). The clamping groove (55) is installed in cooperation with the clamping column (56). The outer side of the screw rod (1), the nut (2) and the nut (3) is provided with a high-temperature-resistant glass coating (6).

2. A heat resistant alloy fastener for high temperature environments according to claim 1, characterized in that: The outer side of the screw rod (1) movably sleeves two gaskets (4). The nut (2) and the nut (3) are installed in cooperation with the adjacent gaskets (4).

3. A heat resistant alloy fastener for high temperature environments according to claim 1, wherein: The screw rod (1) is a nickel alloy screw rod (1). The nut (2) is a nickel alloy nut. The nut (3) is a nickel alloy nut.

4. A heat resistant alloy fastener for high temperature environments as defined in claim 1, wherein: The protection mechanism (5) further comprises a limiting seat (58), which is arranged at the right end of the clamping column (56) and installed in cooperation with the sliding rod (54).

5. A heat resistant alloy fastener for high temperature environments according to claim 4, wherein: The protection mechanism (5) further comprises a high-temperature-resistant rubber ring (57), which is arranged at the left side of the limiting seat (58).

6. A heat resistant alloy fastener for high temperature environments as defined in claim 1, wherein: The outer side of the high-temperature-resistant glass coating (6) is provided with a tungsten carbide coating (7).

7. A heat resistant alloy fastener for high temperature environments as defined in claim 1, wherein: The left middle part of the nut (2) is provided with an internal hexagonal groove (8).

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