阅读说明：本技术 一种不锈钢组合式地脚螺栓 (Stainless steel combination formula rag bolt ) 是由 刘洪成 刘嘉勋 刘嘉尧 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种不锈钢组合式地脚螺栓,其特征在于,包括：第一螺杆、第二螺杆和连接器,所述连接器设置有与所述第一螺杆和所述第二螺杆配合的螺孔,在所述螺孔壁上设置有内置螺纹,所述第一螺杆的一端连接在连接器一端,所述第二螺杆的一端连接在连接器的另一端；所述第一螺杆和所述第二螺杆为不同材质。本发明提供的不锈钢组合式地脚螺栓,通过部分螺栓采用不锈钢材质,部分螺栓采取碳钢材质的方式,节约了生产成本；并且设置连接器,有效防止水分的渗透,防止螺栓的腐蚀。(The invention discloses a stainless steel combined foundation bolt which is characterized by comprising the following components in parts by weight: the connector is provided with a screw hole matched with the first screw rod and the second screw rod, a built-in thread is arranged on the wall of the screw hole, one end of the first screw rod is connected to one end of the connector, and one end of the second screw rod is connected to the other end of the connector; the first screw rod and the second screw rod are made of different materials. According to the stainless steel combined foundation bolt provided by the invention, part of the bolts are made of stainless steel materials, and part of the bolts are made of carbon steel materials, so that the production cost is saved; and the connector is arranged, so that the penetration of moisture is effectively prevented, and the corrosion of the bolt is prevented.)

1. A stainless steel combination formula rag bolt which characterized in that includes: the connector is provided with a screw hole matched with the first screw rod and the second screw rod, a built-in thread is arranged on the wall of the screw hole, one end of the first screw rod is connected to one end of the connector, and one end of the second screw rod is connected to the other end of the connector; the first screw rod and the second screw rod are made of different materials.

2. The stainless steel anchor assembly of claim 1, wherein the first shank is made of stainless steel or has an anti-corrosive coating.

3. The stainless steel anchor bolt of claim 1, wherein the first screw comprises a first smooth rod portion having a smooth surface, and a thread structure is provided on both sides of the first smooth rod portion.

4. The stainless steel modular anchor bolt of any one of claims 1 to 3, wherein the length of the first screw is 200-300 mm.

5. The stainless steel modular anchor bolt of any one of claims 1 to 3, wherein the length of the first screw is 220-280 mm.

6. The stainless steel modular anchor bolt of any one of claims 1 to 3, wherein the length of the first screw is 230-250 mm.

7. The stainless steel modular anchor bolt of claim 1, wherein the connector is made of 40 Cr.

8. The stainless steel composite anchor bolt according to claim 1, wherein the second screw has an overall "L" shape including a straight portion and a bent portion, the straight portion being connected to the bent portion.

9. The stainless steel anchor bolt of claim 1, wherein the second screw comprises a second smooth rod portion having a smooth surface, and a thread structure is provided on both sides of the second smooth rod portion.

10. A stainless steel anchor assembly as claimed in any one of claims 1, 8 and 9, wherein the second shank is formed of any one of carbon steel and alloy steel.

Technical Field

The invention relates to a stainless steel combined foundation bolt, and belongs to the technical field of bolts.

Background

The current anchor bolts or bolts buried deeply in the ground are easy to rust if they are made of carbon steel, and are too expensive if they are made of stainless steel.

The foundation bolt is a tool which is buried in the ground or a foundation and is used for connecting the ground or the ground foundation and machine equipment. Generally, smooth round Q235 carbon steel is used, while Q345 thread steel has high strength, but the thread of the nut is not easy to be smooth round. For smooth round anchor bolts, the burial depth is typically 25 times its diameter, with a 90 degree hook about 120mm long. If the bolt is large in diameter (e.g. 45mm) and buried too deeply, a square plate is usually welded to the end of the bolt.

The Chinese invention patent No. 201720425974.3, entitled "a plane valve embedded main rail", discloses an application mode of foundation bolts.

Disclosure of Invention

The invention aims to solve the technical problem of providing a stainless steel combined foundation bolt.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a stainless steel modular anchor bolt comprising: the connector is provided with a screw hole matched with the first screw rod and the second screw rod, a built-in thread is arranged on the wall of the screw hole, one end of the first screw rod is connected to one end of the connector, and one end of the second screw rod is connected to the other end of the connector; the first screw rod and the second screw rod are made of different materials.

Preferably, the first screw is made of stainless steel.

Preferably, the first screw rod comprises a first polished rod part, the surface of the first polished rod part is smooth, and thread structures are arranged on two sides of the first polished rod part.

Wherein preferably, the first screw length is 200-300 mm.

Wherein preferably, the length of the first screw is 220-280 mm.

Wherein preferably, the first screw length is 230-250 mm.

Preferably, the material of the connector is 40 Cr.

Wherein preferably, the second screw rod is wholly "L" shape structure, including straight rod portion and kink, this straight rod portion links to each other with the kink.

Preferably, the second screw rod comprises a second polished rod part, the surface of the second polished rod part is smooth, and thread structures are arranged on two sides of the second polished rod part.

Preferably, the second screw is made of any one of carbon steel or alloy steel.

The invention has the following technical effects: because the two-section type carbon steel and stainless steel combined foundation bolt is adopted, compared with the foundation bolt which is totally stainless steel, the cost is saved on the premise of ensuring the stainless steel. One section close to the ground is easy to rust and adopts a bolt with a coating or stainless steel, a connector is arranged in the middle of the bolt and can be used for connection and has a waterproof function, and the part deep into the ground adopts a conventional carbon steel bolt, so that the bolt has a good economic effect, is simple in structure and convenient to install, is suitable for the combined use of two sections with different specifications, and further expands the application range.

Drawings

FIG. 1 is a schematic view of a stainless steel modular anchor bolt of the present invention;

FIG. 2 is a schematic structural view of a first screw of the present invention;

FIG. 3 is a schematic view of the connector of the present invention;

FIG. 4 is a schematic structural view of a second screw of the present invention;

FIG. 5 is a schematic view showing the stainless steel assembly anchor bolt of the present invention being attached to a bottom plate of a steel column for concrete.

Detailed Description

The technical contents of the invention are described in detail below with reference to the accompanying drawings and specific embodiments.

< first embodiment >

As shown in fig. 1 to 4, a first embodiment of the present invention discloses a stainless steel composite anchor bolt 10 including a first screw bar 1, a coupler 2, and a second screw bar 3. The connector 2 is provided with a screw hole 21 that is fitted with the first screw 1 and the second screw 3, and an inner wall of the screw hole 21 is provided with a built-in thread 22 that is fitted with the threads of the first screw 1 and the second screw 3. One end of the first screw rod 1 is screwed at one end of the connector 2, and one end of the second screw rod 3 is screwed at the other end of the connector 2; the first screw 1 is made of stainless steel or has an antirust coating.

According to the scheme, furthermore, the whole body of the first screw rod 1 is provided with a thread structure, so that the using length of the bolt can be adjusted at will.

According to the above scheme, further, the length L of the first screw 1 is 200-.

According to the above-described aspect, further, a cylindrical screw hole 21 is provided in the interior of the connector 2, and the first screw 1 and the second screw 3 are screwed in from both sides of the connector 2, respectively. The connector 2 may be made of 40 Cr.

According to the above scheme, further, the second screw rod 3 is integrally in an 'L' -shaped structure and comprises a straight rod part and a bent part, and the straight rod part is connected with the bent part. One end of the straight rod part is screwed into the connector 2, and the other end is connected with the bending part. The bent portion can enhance the fixation in the vertical direction after being buried underground, so that the second screw 3 is not easy to loosen.

According to the above scheme, further, the bending angle of the bending part is 45 degrees to 135 degrees.

According to the above solution, further, the second screw 3 is finish-rolled deformed steel bar. Its tensile strength and yield strength are very strong (greater than 450 MPa). The material can be carbon steel or alloy steel. The second screw rod is round steel or ribbed steel bar.

Further, the first screw 1 further includes a first polished rod portion 11. The first polished rod part 11 serves as a fixing part in the machining process. The thread processing device processes threads on both sides of the first screw 1 after fixing the first screw 1 by the first polished rod part 11. Therefore, the surface of the first polished rod part 11 is smooth and not provided with threads. The first polished rod part 11 can also limit the depth of screwing the first screw 1 into the connector 2, and position the first screw. The second screw 3 further comprises a second polished rod section 31. The second polished rod part 31 serves as a fixing part in the machining process. The thread processing device processes threads on both sides of the second screw 3 after fixing the second screw 3 by the second polished rod part 31. Therefore, the surface of the second polished rod part 31 is smooth and not provided with threads. The second polished rod part 31 can also limit the depth of the second screw 3 screwed into the connector 2, and prevent the second screw 3 from being excessively screwed into the connector 2, which results in the shortening of the length of the whole stainless steel combined anchor bolt. The sizes of the first polished rod part 11 and the second polished rod part 31 can be designed arbitrarily according to actual construction requirements.

< second embodiment >

The second embodiment of the invention discloses a stainless steel combined type foundation bolt 10 which comprises a stainless steel first screw rod 1 with the length of 250mm and the specification of M18, a connector 2 made of 40Cr material and a second screw rod 3 with the length of more than 200mm and the specification of M18. The connector 2 is provided with a built-in thread 22 which is engaged with the threads of the first screw 1 and the second screw 3, one end of the first screw 1 is screwed to one end of the connector 2, and one end of the second screw 3 is screwed to the other end of the connector 2.

The invention is applied to the fixation of the steel upright post 4 for concrete. As shown in fig. 5, 4 stainless steel anchor bolts 10 according to the present invention are connected to four vertices of a steel column bottom plate 5 for concrete, respectively, and the 4 stainless steel anchor bolts 10 according to the present invention are embedded under the ground to fix the steel column 4 for concrete. Wherein, the length L of the first screw 1 is 200-300mm, preferably 220-280mm, and most preferably 230-250 mm.

The traditional fixing mode of the steel upright column bottom plate for concrete is that a through-root carbon steel foundation bolt is adopted for fixing. The carbon steel foundation bolt is seriously corroded when being exposed to the overground part and the part about 200mm underground, the safety performance and the service life are seriously influenced, and the carbon steel foundation bolt can only be scrapped and cannot be maintained and replaced if being corroded to a certain degree. The first screw 1 of the present embodiment is made of stainless steel, and is exposed to the above-ground portion and the portion of about 200mm below the ground, thereby ensuring that the first screw is not corroded.

When the connector 2 is made of 40Cr material, a cylindrical screw hole 21 is arranged inside the connector, and a built-in thread 22 is arranged on the wall of the screw hole 21. The moisture sinking in the vertical direction along the first screw 1 is changed in the penetration direction to the horizontal direction when passing through the connector 2, thereby advantageously preventing the moisture from penetrating into the position of the second screw 2. More importantly, there is no oxygen in the place 200mm underground in the construction site, so that it is ensured that the second screw 3 will not contact moisture and air even if it is below 200mm underground, thereby preventing the second screw 3 from corroding.

In conclusion, according to the stainless steel combined foundation bolt 10 provided by the invention, part of the bolts are made of stainless steel materials, and part of the bolts are made of carbon steel materials, so that the production cost is saved; and the connector is arranged, so that the penetration of moisture is effectively prevented, and the corrosion of the bolt is prevented.

The present invention has been described in detail. It will be apparent to those skilled in the art that any obvious modifications thereof can be made without departing from the spirit of the invention, which infringes the patent right of the invention and bears the corresponding legal responsibility.