Channel steel reinforcing bolt

Abstract

The utility model relates to the technical field of bolts, in particular to a channel steel reinforcing bolt which comprises a head portion and a rod portion, the rod portion is provided with threads, the outer wall of the rod portion is provided with at least one notch with a V-shaped cross section in the axial direction, the wall face of the side, corresponding to the rod portion, of the head portion is provided with a protruding anti-skid rib, and the cross section of the head portion is in a parallelogram shape. The anti-skid ribs are arranged along the diagonal lines. The channel steel reinforcing bolt is remarkably improved in the aspects of looseness prevention, corrosion prevention, light weight, environmental adaptability and the like, and more complex engineering requirements can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field especially relates to a channel steel reinforcing bolt. BACKGROUND

[0002] Channel steel reinforcing bolt usually includes head and stem, the stem is provided with thread, the traditional channel steel reinforcing bolt, when using, because being used for channel steel, channel steel and bolt are steel, and the two are prone to thermal expansion and cold shrinkage due to the change of external environment temperature, and are prone to looseness, so as to cause unstable connection.

[0003] For this situation, the applicant proposes channel steel special T bolt in the prior application (announcement number CN203161766U) patent document, mainly through the axial V-shaped slot in the stem, through the elastic deformation compensation thermal expansion and cold shrinkage gap, and through the parallelogram head + diagonal anti-skid rib (101), increase the friction force of contact surface.

[0004] However, in actual use, the channel steel special T bolt of the prior application still has the following technical problems: the problems of material fatigue, corrosion, vibration looseness under extreme temperature are not solved, and the adaptability design under special environmental conditions is lacked. SUMMARY

[0005] The utility model mainly aims at overcoming the insufficient in the prior art, provides a channel steel reinforcing bolt.

[0006] The utility model discloses the technical scheme adopted for realizing its technical purpose is: a channel steel reinforcing bolt, including head and stem, the stem is provided with thread, the outer wall of the stem is equipped with at least one V-shaped slot of cross section along the axial direction;

[0007] The wall surface of the head corresponding one side of the stem is equipped with the anti-skid rib of protruding, and the cross section of the head is parallelogram, and the anti-skid rib is arranged along its diagonal.

[0008] Preferably, the thread section of the stem adopts sectional design, includes coarse tooth section and fine tooth section, and the surface is coated with wear-resistant coating or is processed by galvanizing.

[0009] The stem is designed as sectional thread, the coarse tooth section can be quickly screwed in, the fine tooth section enhances locking, and efficiency and stability are considered;The stem surface is coated with wear-resistant coating or is processed by galvanizing, which can reduce thread wear, prolong service life, be suitable for high-frequency disassembly scene, enhance corrosion resistance at the same time, and be suitable for humid or corrosive environment.

[0010] Preferably, the outer wall of the stem is also provided with annular groove;The slot is embedded with elastic rubber strip or shape memory alloy, and the surface of the elastic rubber strip or shape memory alloy is coated with fluorescent agent.

[0011] The annular groove enhances the bite force with the nut, prevents loosening, and improves the anti-vibration performance.

[0012] The elastic rubber strip or shape memory alloy embedded in the slot can fill the gap caused by thermal expansion and cold contraction, buffer vibration, improve sealing performance and shock absorption effect, and can be used for rapid positioning in dark environment by adding fluorescent agent, thereby improving the safety of night construction.

[0013] Preferably, the end of the rod portion is provided with a guide cone head, and a drainage hole is formed in the guide cone head and communicates with the slot.

[0014] The guide cone head facilitates quick alignment with the installation hole, thereby improving the installation efficiency; and the drainage hole can drain the accumulated water in the slot in time, thereby preventing rust.

[0015] Preferably, a hexagonal groove is formed in the top of the head portion, and heat dissipation fins are arranged around the hexagonal groove and are arranged radially or uniformly.

[0016] The hexagonal groove is compatible with an internal hexagonal wrench for installation, thereby expanding the tool adaptability; and the heat dissipation fins accelerate heat dissipation, reduce the influence of thermal expansion and cold contraction, and are suitable for high-temperature environments.

[0017] Preferably, the bottom surface of the anti-skid rib is provided with sawtooth patterns or laser marks, and the two ends and the edge of the head portion are designed as rounded corners.

[0018] The sawtooth patterns or laser marks on the bottom surface of the anti-skid rib increase the friction with the channel steel, thereby preventing lateral sliding; and the rounded corner design of the anti-skid rib and the edge of the head portion can avoid scratching the operating personnel or the surface of the channel steel.

[0019] Preferably, the anti-skid rib is detachably connected between the head portion and the rod portion, and the anti-skid rib is provided in a T-shaped structure and is connected between the head portion and the rod portion in an interference fit. The anti-skid rib is designed in a detachable manner through interference fit, so that the worn parts can be replaced, thereby reducing the maintenance cost.

[0020] Preferably, the head portion and the rod portion are made of titanium alloy. The titanium alloy material of the T-shaped bolt takes into account high strength and light weight, and is suitable for high-end fields such as aerospace.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] The channel steel reinforcing bolt can partially compensate the gap by filling the elastic rubber strip or shape memory alloy in the V-shaped slot, can buffer vibration, improve sealing performance and shock absorption effect, and meet the requirements under the conditions of thermal expansion and cold contraction.

[0023] The channel steel reinforcing bolt can reduce the temperature rise amplitude through heat conduction of the heat dissipation fins, and reduce the thermal deformation difference.

[0024] The channel steel reinforcing bolt can realize mechanical engagement and thread locking double insurance through segmented threads and annular grooves, and has better anti-loosening effect.

[0025] The channel steel reinforcing bolt is lightweight, and can avoid environmental corrosion / wear through wear-resistant coating or galvanizing, and significantly improves the durability of use.

[0026] The channel steel reinforcing bolt can reduce installation time by 30% through the setting of the guide cone head and the fluorescent agent, and improves installation efficiency.

[0027] In summary, through the above-mentioned additional structure, the channel steel reinforcing bolt is significantly improved in anti-loosening, corrosion resistance, lightweight, and environmental adaptability, and can meet more complex engineering requirements. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front view structural schematic diagram of the channel steel reinforcing bolt.

[0029] Figure 2 It is a top view structural schematic diagram of the channel steel reinforcing bolt.

[0030] Figure 3 It is a bottom view structural schematic diagram of part of the structure of the channel steel reinforcing bolt.

[0031] Figure 4 It is a bottom view structural schematic diagram of the anti-skid rib.

[0032] Among them:

[0033] 1-head; 101-hexagonal groove; 102-heat dissipation fin; 2-shaft; 201-lack slot; 202-elastic rubber strip; 203-fine tooth section; 204-coarse tooth section; 205-annular groove; 206-guide cone head; 207-drainage hole; 3-anti-skid rib; 301-sawtooth pattern. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail through the drawings and examples below. However, it should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0035] In the description of the utility model, it needs to explain, when the element is called " fixed to " or " set to " another element, it can be directly on another element or indirectly on the other element. When an element is referred to as " connected to " another element, it can be directly connected to another element or indirectly connected to the other element.

[0036] In the description of the utility model, it needs to explain that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. The meaning of "several" is one or more than one, unless otherwise specifically limited.

[0037] In the description of the utility model, it also needs to be explained that, unless otherwise specifically defined and limited, the terms "set", "mount", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Embodiment

[0038] Please refer to Figures 1-4 A channel steel reinforced bolt, comprising a head 1 and a rod 2, the head 1 and the rod 2 are made of titanium alloy material. The whole T-shaped bolt is made of titanium alloy material, which takes into account high strength and light weight, and is suitable for high-end fields such as aerospace.

[0039] The top of the head 1 is provided with a hexagonal groove 101 and is provided with a heat dissipation fin 102, the heat dissipation fin 102 is arranged around the hexagonal groove 101 in a radial or uniform manner. The hexagonal groove 101 is compatible with the installation of an internal hexagonal wrench, and the tool adaptability is expanded; the heat dissipation fin 102 accelerates heat dissipation, reduces the influence of thermal expansion and contraction, and is suitable for high temperature environment.

[0040] The rod part 2 is provided with threads, the threaded section of the rod part 2 is designed in sections, including a coarse thread section 204 and a fine thread section 203, and the surface is coated with a wear-resistant coating or subjected to galvanizing processing. The rod part 2 is designed with sectioned threads, the coarse thread section 204 can be quickly screwed in, and the fine thread section 203 enhances locking, taking into account efficiency and stability; the surface of the rod part 2 coated with a wear-resistant coating or subjected to galvanizing processing can reduce thread wear, prolong service life, be suitable for high-frequency disassembly and assembly scenes, and at the same time enhance corrosion resistance, be suitable for humid or corrosive environments.

[0041] The outer wall of the rod part 2 is also provided with an annular groove 205; the annular groove 205 enhances the engagement force with the nut, prevents loosening, and improves vibration resistance.

[0042] The outer wall of the rod part 2 is provided with at least one missing groove 201 with a "V"-shaped cross section in the axial direction; the missing groove 201 is embedded with an elastic rubber strip 202 or filled with a shape memory alloy, and the surface of the elastic rubber strip 202 or the shape memory alloy is coated with a fluorescent agent. The missing groove 201 is embedded with part of the elastic rubber strip 202 or the shape memory alloy, which can fill the thermal expansion and contraction gap, buffer vibration, and improve sealing and shock absorption effect; and by adding a fluorescent agent, it can be used for quick positioning in dark environments, improving nighttime construction safety.

[0043] The rod part 2 is provided with a guide cone head 206 at the end, and the guide cone head 206 is provided with a drainage hole 207 communicating with the missing groove 201. The guide cone head 206 facilitates quick alignment with the mounting hole, improving installation efficiency; the drainage hole 207 can drain water accumulated in the missing groove 201 in time to prevent rusting.

[0044] The wall surface of the head part 1 corresponding to one side of the rod part 2 is provided with a raised anti-skid rib 3, and the cross section of the head part 1 is a parallelogram, and the anti-skid rib 3 is arranged along the diagonal line thereof.

[0045] The bottom surface of the anti-skid rib 3 is provided with a sawtooth pattern 301 or a laser score, and both ends thereof and the edge of the head part 1 are designed with rounded corners. The sawtooth pattern 301 or the laser score on the bottom surface of the anti-skid rib 3 increases the friction with the channel steel to prevent lateral sliding; the rounded corner design of the anti-skid rib 3 and the edge of the head part 1 can avoid scratching the operator or the surface of the channel steel.

[0046] The anti-skid rib 3 is detachably connected between the head part 1 and the rod part 2, and the anti-skid rib 3 is designed in a T-shaped structure and is connected between the head part 1 and the rod part 2 in an interference fit. The anti-skid rib 3 is designed in a detachable manner through interference fit, which facilitates replacement of worn parts and reduces maintenance costs.

[0047] It should be noted that although the above embodiments have been described herein, the patent protection scope of the utility model is not limited thereby. Therefore, based on the innovative concept of the utility model, the changes and modifications of the embodiments described herein, or the equivalent structures, equivalent processes or equivalent function transformations made by using the contents of the utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the protection scope of the utility model patent.

Claims

1. A channel steel reinforcing bolt, comprising a head (1) and a shank (2), wherein the shank (2) is provided with threads, characterized in that: The outer wall of the rod (2) is provided with at least one notch (201) with a "V" shaped cross section along the axial direction. The head (1) has a raised anti-slip rib (3) on the wall surface on the side corresponding to the rod (2), and the cross-section of the head (1) is a parallelogram, with the anti-slip rib (3) arranged along its diagonal. The threaded section of the rod (2) is designed in a segmented manner, including a coarse tooth section (204) and a fine tooth section (203), and the surface is coated with a wear-resistant coating or galvanized. The outer wall of the rod (2) is also provided with an annular groove (205); the notch (201) is embedded with an elastic strip (202) or filled with a shape memory alloy, and the surface of the elastic strip (202) or the shape memory alloy is coated with a fluorescent agent.

2. The channel steel reinforcing bolt according to claim 1, characterized in that: The end of the rod (2) is provided with a guide cone (206), and a drainage hole (207) connected to the notch (201) is provided in the guide cone (206).

3. The channel steel reinforcing bolt according to claim 1, characterized in that: The top of the head (1) is provided with a hexagonal groove (101) and heat dissipation fins (102), which are arranged radially or uniformly around the hexagonal groove (101).

4. The channel steel reinforcing bolt according to claim 1, characterized in that: The bottom surface of the anti-slip rib (3) is provided with serrated texture (301) or laser engraving, and the edges of its two ends and head (1) are all rounded.

5. The channel steel reinforcing bolt according to claim 1, characterized in that: The anti-slip rib (3) is detachably connected between the head (1) and the rod (2). The anti-slip rib (3) is configured as a T-shaped structure and is interference-fitted between the head (1) and the rod (2).

6. The channel steel reinforcing bolt according to claim 1, characterized in that: The head (1) and rod (2) are made of titanium alloy.

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