Carbon steel bolt

Abstract

The utility model discloses a carbon steel bolt which comprises a bolt body and a plurality of splicing bolts, splicing holes are formed in the bottom of the bolt body, one end of each splicing bolt is provided with a splicing column corresponding to the corresponding splicing hole, and the other end of each splicing bolt is provided with a splicing hole corresponding to the corresponding splicing column. A telescopic fixing block is arranged on the splicing column, a fixing hole corresponding to the fixing block is formed in the splicing hole, a dismounting mechanism is arranged on the splicing bolt, and the bolt splicing is more stable and does not loosen due to the cooperative fixation of the fixing block and the fixing hole; and meanwhile, the spliced long bolts can be detached through the detaching mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and more specifically relates to a spliced ​​carbon steel bolt with increased length. Background Art

[0002] Current bolts are generally of fixed length. Therefore, when using them, it is necessary to select bolts of corresponding length according to the depth of the splicing hole or the threaded hole, which is inefficient.

[0003] For example, an existing patent with publication number CN209180198U discloses a splicing bolt, which has an inner screw hole at the bottom of the bolt body, the inner screw hole is connected to the splicing bolt through a bolt connecting column, and an inner screw hole is also provided at the bottom of the splicing bolt, and an inner plug assembly is connected to the inner screw hole. In this way, when the bolt is used, the splicing bolt is connected to the inner screw hole of the bolt body through the bolt connecting column to extend the bolt, thereby improving work efficiency.

[0004] However, since the spliced ​​bolts and the bolt bodies, as well as adjacent spliced ​​bolts, are also connected by threads, when the spliced ​​bolts are used in threaded holes, the bolts spliced ​​by threads are not stable enough and may become loose, thus affecting the connection of the bolts. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a spliced ​​carbon steel bolt with increased length, which is more stable and does not loosen after splicing, and the spliced ​​bolts can also be disassembled.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a carbon steel bolt, comprising a bolt body and a plurality of splicing bolts, a splicing hole is arranged at the bottom of the bolt body, a splicing column corresponding to the splicing hole is arranged at one end of the splicing bolt, a splicing hole also corresponding to the splicing column is arranged at the other end of the splicing bolt, a retractable fixing block is arranged on the splicing column, a fixing hole corresponding to the fixing block is arranged in the splicing hole, and a disassembly mechanism is arranged on the splicing bolt.

[0007] Furthermore, an inclined wedge-shaped surface is provided on the fixing block.

[0008] Furthermore, a cavity is provided in the splicing column, a spring is provided in the cavity, the fixing block is slidably connected to the cavity, and the spring is connected to the fixing block.

[0009] Furthermore, two symmetrical fixing blocks are arranged on the splicing column, and two ends of the spring are respectively connected to the two fixing blocks.

[0010] Furthermore, a plurality of auxiliary protrusions are provided at one end of the splicing bolt, and grooves corresponding to the auxiliary protrusions are provided at the bottom of the bolt body and the bottom of the splicing bolt.

[0011] Furthermore, the disassembly mechanism includes a slideway that passes through the cavity and the splicing hole, and a first pull rod and a second pull rod are arranged in the slideway. The second pull rod is sleeved outside the first pull rod and is slidably connected to the first pull rod, and a pull rope is arranged between the end of the first pull rod and the fixed block.

[0012] Furthermore, it also includes a rubber block, the shape of which is matched with the splicing hole, and a rubber plate is arranged at the bottom of the rubber block.

[0013] Compared with the prior art, the utility model has the following beneficial effects: when connecting the splicing bolt to the bolt body, align the splicing column on the splicing bolt with the splicing hole on the bolt body, and then insert the splicing column into the slot splicing hole, so that the fixing block on the splicing column cooperates with the fixing hole in the splicing hole, so that the bolt body and the splicing bolt can be fixedly connected, the bolt length is increased, and the cooperation and fixation of the fixing block and the fixing hole make the splicing between the bolts more stable and not loose; at the same time, the long bolts that have been spliced ​​together can be disassembled through the disassembly mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the carbon steel bolt of the utility model;

[0015] Figure 2 It is an internal cross-sectional view of a spliced ​​bolt in a carbon steel bolt of the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the rubber block and the rubber plate in the carbon steel bolt of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the second pull rod in the spliced ​​bolt of the carbon steel bolt of the utility model when it is extended.

[0019] Figure numerals: bolt body 1; splicing bolt 2; splicing hole 3; splicing column 4; fixing block 5; fixing hole 6; cavity 7; spring 8; stopper 9; auxiliary protrusion 10; groove 11; slideway 12; first pull rod 13; second pull rod 14; rubber block 15; rubber plate 16; pull rope 17. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention 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 cannot be understood as limiting the specific protection scope of the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0022] Reference Figures 1 to 5 The utility model is further described.

[0023] A carbon steel bolt comprises a bolt body 1 and a plurality of splicing bolts 2, wherein a splicing hole 3 is arranged at the bottom of the bolt body 1, a splicing column 4 corresponding to the splicing hole 3 is arranged at one end of the splicing bolt 2, a splicing hole 3 also corresponding to the splicing column 4 is arranged at the other end of the splicing bolt 2, a retractable fixing block 5 is arranged on the splicing column 4, a fixing hole 6 corresponding to the fixing block 5 is arranged in the splicing hole 3, and a disassembly mechanism is arranged on the splicing bolt 2.

[0024] like Figures 1 to 5 When the bolt body 1 is connected with the splicing bolt 2, the splicing column 4 on the splicing bolt 2 is aligned with the splicing hole 3 on the bolt body 1, and then the splicing column 4 is inserted into the groove splicing hole 3. The fixing block 5 on the splicing column 4 is first squeezed by the inner wall of the splicing hole 3 and retracted into the splicing column 4. When the splicing column 4 is fully extended into the splicing hole 3, the fixing block 5 will correspond to the fixing hole 6 in the splicing hole 3. At this time, the fixing block 5 will extend out again to cooperate with the splicing hole 3, so that the bolt body 1 and the splicing bolt 2 are fixedly connected by the fixing block 5 and the fixing hole 6. The latter splicing bolt 2 is at the same distance as the former splicing bolt 2, so that multiple splicing bolts 2 can be spliced ​​on the bolt body 1 to increase the bolt length. At the same time, the long bolts that have been spliced ​​together can be disassembled by the disassembly mechanism, and the splicing between the bolts is more stable and not loose by the fixing block 5 and the fixing hole 6.

[0025] like Figure 3As shown, in this embodiment, preferably, the fixing block 5 is provided with an inclined wedge-shaped surface, so that the fixing block 5 can be retracted into the splicing column 4 when the inner wall of the splicing hole 3 squeezes the fixing block 5 .

[0026] like Figure 3 As shown, in the present embodiment, preferably, a cavity 7 is provided in the splicing column 4, a spring 8 is provided in the cavity 7, the fixed block 5 is slidably connected to the cavity 7, the spring 8 is connected to the fixed block 5, when the fixed block 5 is squeezed, the spring 8 is squeezed at the same time, the fixed block 5 extends into the cavity 7, when the fixed block 5 corresponds to the fixed hole 6, the spring 8 releases the elastic force, and the fixed block 5 is pushed out to cooperate with the fixed hole 6.

[0027] like Figure 3 As shown, in this embodiment, preferably, a stopper 9 is provided at the upper end of the cavity 7 corresponding to the outlet of the fixed block 5, and the inner side surface of the stopper 9 contacts the wedge surface on the fixed block 5, which can prevent the fixed block 5 on the unspliced ​​splicing bolt 2 from being pushed out by the spring 8.

[0028] like Figure 3 As shown, in this embodiment, preferably, two symmetrical fixing blocks 5 are provided on the splicing column 4, and both ends of the spring 8 are respectively connected to the two fixing blocks 5 to improve the splicing stability.

[0029] like Figure 2 As shown, in the present embodiment, preferably, a plurality of auxiliary protrusions 10 are provided at one end of the splicing bolt 2, and grooves 11 corresponding to the auxiliary protrusions 10 are provided at the bottom of the bolt body 1 and the bottom of the splicing bolt 2. After splicing, the auxiliary protrusions 10 cooperate with the grooves 11 to improve the stability between adjacent bolt sections when the bolts are tightened.

[0030] like Figure 2 , Figure 3 and Figure 5 As shown, in the preferred embodiment, the disassembly mechanism includes a slide 12 passing through the cavity 7 and the splicing hole 3, and a first pull rod 13 and a second pull rod 14 are arranged in the slide 12. The second pull rod 14 is sleeved outside the first pull rod 13 and is slidably connected to the first pull rod 13. A pull rope 17 is arranged between the end of the first pull rod 13 and the fixed block 5. When the second pull rod 14 slides to the bottom of the first pull rod 13, the bottom of the second pull rod 14 extends from the splicing hole 3 to the outside, and the second pull rod 14 is pulled to drive the first pull rod 13 to pull the pull rope 17, and then the fixed block 5 is pulled by the pull rope 17 to slide and retract into the cavity 7, so that the fixed block 5 is separated from the fixed hole 6, so that the splicing column 4 and the splicing hole 3 can be separated, and the bolts that were originally spliced ​​with each other can be separated; after loosening the pull rod, the spring 8 can push the fixed block 5 out again.

[0031] like Figure 1 and Figure 4As shown, preferably, the present embodiment further includes a rubber block 15, the shape of the rubber block 15 is adapted to the splicing hole 3, a rubber plate 16 is provided at the bottom of the rubber block 15, the rubber block 15 is used to block the splicing hole 3 on the last splicing bolt 2, the setting of the rubber plate 16 facilitates the removal of the rubber block 15, and a protrusion corresponding to the groove 11 is provided on the rubber plate 16.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A carbon steel bolt, characterized in that: It includes a bolt body and a plurality of splicing bolts, wherein a splicing hole is arranged at the bottom of the bolt body, a splicing column corresponding to the splicing hole is arranged at one end of the splicing bolt, a splicing hole also corresponding to the splicing column is arranged at the other end of the splicing bolt, a retractable fixing block is arranged on the splicing column, a fixing hole corresponding to the fixing block is arranged in the splicing hole, and a disassembly mechanism is arranged on the splicing bolt.

2. The carbon steel bolt according to claim 1, characterized in that: The fixing block is provided with an inclined wedge-shaped surface.

3. The carbon steel bolt according to claim 2, characterized in that: A cavity is arranged in the splicing column, a spring is arranged in the cavity, the fixing block is slidably connected with the cavity, and the spring is connected with the fixing block.

4. The carbon steel bolt according to claim 3, characterized in that: The splicing column is provided with two symmetrical fixing blocks, and the two ends of the spring are respectively connected to the two fixing blocks.

5. The carbon steel bolt according to claim 4, characterized in that: One end of the splicing bolt is provided with a plurality of auxiliary protrusions, and the bottom of the bolt body and the bottom of the splicing bolt are both provided with grooves corresponding to the auxiliary protrusions.

6. The carbon steel bolt according to claim 5, characterized in that: The disassembly mechanism includes a slideway that passes through the cavity and the splicing hole, a first pull rod and a second pull rod are arranged in the slideway, the second pull rod is sleeved outside the first pull rod and is slidably connected to the first pull rod, and a pull rope is arranged between the end of the first pull rod and the fixed block.

7. The carbon steel bolt according to claim 6, characterized in that: It also includes a rubber block, the shape of which is matched with the splicing hole, and a rubber plate is arranged at the bottom of the rubber block.

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