Double-bolt head bolt for butt connection and connection method thereof

Abstract

The present invention discloses a double-bolt head bolt for butt-jointing and a connection method thereof, which relates to the technical field of bolts. The bolt body comprises a bolt body, a movable threaded sleeve, and a limiting rod. One end of the bolt body is provided with a bolt external thread, the other end of the bolt body is fixed with a connecting column, the movable threaded sleeve is rotatably connected to the outer side of the connecting column, the outer wall of the movable threaded sleeve is provided with a threaded sleeve external thread, the bolt body is provided with a bolt limiting groove, the movable threaded sleeve is provided with a threaded sleeve limiting groove, and the limiting rod can be detachably connected to the bolt limiting groove and the threaded sleeve limiting groove. The present invention only requires rotating the bolt body to achieve a fixed connection between the two devices, and has a simple structure and is easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of bolts, in particular to a double-bolt head bolt for butt-jointing use and a connection method thereof. Background Art

[0002] Double-head bolts, also known as stud screws or double-ended studs, are used for mechanical connection. Studs have threads on both ends and are primarily used on large equipment where accessories are mounted, such as flanges, sight glasses, mechanical seal seats, and reducer racks. However, when two components require multiple threaded holes, a double-head bolt cannot be tightened further after being threaded into a threaded hole in one component. Therefore, this method cannot simultaneously connect two components with threaded holes.

[0003] Therefore, when connecting two components with threaded holes, they typically require additional connections using small bolts, welding, or riveting. This not only requires additional components and equipment, but also typically increases the size and cost of the connection. It also makes disassembly of the components difficult.

[0004] Therefore, there is an urgent need in the market for a double-bolt head bolt for butt connection and a connection method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-bolt head bolt for butt connection and a connection method thereof, which is used to solve the technical problems existing in the above-mentioned prior art. Its two ends can be threadedly connected to the threaded holes on the two components respectively, and the operation is convenient.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention discloses a double-bolt head bolt for docking and a connection method thereof, comprising a bolt body, a movable threaded sleeve and a limiting rod, one end of the bolt body is provided with a bolt external thread, the other end of the bolt body is fixed with a connecting column, the movable threaded sleeve is rotatably connected to the outer side of the connecting column, the outer wall of the movable threaded sleeve is provided with a threaded sleeve external thread, the bolt body is provided with a bolt limiting groove, the movable threaded sleeve is provided with a threaded sleeve limiting groove, and the limiting rod can be detachably connected to the bolt limiting groove and the threaded sleeve limiting groove.

[0008] Preferably, a clamping groove is provided on one end of the connecting column away from the bolt body, and an axis clamp is provided in the clamping groove.

[0009] Preferably, a limiting portion is provided on one end of the connecting column away from the bolt body.

[0010] Preferably, a countersunk bolt is connected to one end of the connecting column away from the bolt body.

[0011] The present invention also discloses a method for connecting the double-bolt head bolts for butt connection, comprising the following steps:

[0012] S1. Install the limiting rod into the limiting groove of the bolt and the limiting groove of the threaded sleeve;

[0013] S2. Rotate the bolt body to thread the movable threaded sleeve into a threaded hole on a component to be connected;

[0014] S3, remove the limit rod;

[0015] S4. Turn the bolt body to thread the external thread of the bolt into the threaded hole of another component to be connected.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention can respectively utilize the bolt body and the movable threaded sleeve to realize threaded connection with the threaded holes on the two components. The whole process is simple to operate, and no other auxiliary equipment is required for auxiliary fixing, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a double-bolt head bolt used for docking in Example 1;

[0020] Figure 2 It is a front view of a double-bolt head bolt for butt connection in accordance with the first embodiment;

[0021] Figure 3 This is a front view of a double-bolt head bolt for docking in Example 2;

[0022] Figure 4 This is a front view of a double-bolt head bolt for docking use in Example 3;

[0023] Figure 5 Schematic diagram of step S2 in Example 4;

[0024] Figure 6 Schematic diagram of step S4 in Example 4;

[0025] In the figure: 1-bolt body; 101-bolt limiting groove; 2-movable threaded sleeve; 201-threaded sleeve limiting groove; 3-connecting column; 4-limiting rod; 5-axis clamp; 6-limiting part; 7-countersunk bolt. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a double-bolt head bolt for butt connection and a connection method thereof, which is used to solve the technical problems existing in the above-mentioned prior art. Its two ends can be threadedly connected to the threaded holes on the two components respectively, and the operation is convenient.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] like Figure 1 As shown, this embodiment provides a double-bolt head bolt for docking, including a bolt body 1, a movable threaded sleeve 2, and a limiting rod 4. The bolt body 1 can be an existing hexagonal bolt, including a screw portion with an external thread and a hexagonal bolt head structure. One end of the bolt body 1 is provided with a bolt external thread (i.e., the screw portion of the bolt body 1), and the other end of the bolt body 1 is fixed with a connecting column 3. The connecting rod and the bolt body 1 can be an integrated structure, and the screw of the bolt body 1 and the connecting column 3 are respectively located on both sides of the bolt head in the bolt body 1. The movable threaded sleeve 2 is rotatably connected to the outside of the connecting column 3, and the outer wall of the movable threaded sleeve 2 is provided with a threaded sleeve external thread for connecting to the threaded hole to be connected. A bolt limiting groove 101 is provided on the bolt body 1, and a threaded sleeve limiting groove 201 is provided on the movable threaded sleeve 2. The bolt limiting groove 101 and the threaded sleeve limiting groove 201 can be connected. When the bolt limiting groove 101 and the threaded sleeve limiting groove 201 are connected, the limiting rod 4 can be disassembled and connected to the bolt limiting groove 101 and the threaded sleeve limiting groove 201.

[0031] When it is necessary to connect the threaded holes of two components, first align the movable threaded sleeve 2 with one of the threaded holes, and use a wrench to rotate the bolt head of the bolt body 1 (at this time, due to the action of the limit rod 4, the movable threaded sleeve 2 and the bolt body 1 are in a relatively fixed state), so that the movable threaded sleeve 2 can be screwed into the threaded hole of one of the components. Then remove the limit rod 4 to allow the movable threaded sleeve 2 and the connecting column 3 to rotate relative to each other. At this time, align the other threaded hole to be connected with the screw portion of the bolt body 1, and rotate the bolt head of the bolt body 1 again. Since the movable threaded sleeve 2 has been separated from the bolt body 1 at this time, it will not affect the rotation of the bolt body 1, and finally the screw portion in the bolt body 1 is connected to the threaded hole of the other component.

[0032] In this embodiment, the end of the connecting column 3 away from the bolt body 1 (ie Figure 2 A draw-in groove is provided on the upper side, and an axle card 5 is provided in the draw-in groove. A retaining ring or a retaining ring can also be provided, and their effects are the same, that is, the movable threaded sleeve 2 is limited to prevent it from falling out from below.

[0033] Example 2

[0034] like Figure 3 As shown, this embodiment provides a double-bolt head bolt for butt connection, and the disclosed technical features are basically the same as those provided in the first embodiment, except that:

[0035] In this embodiment, a stopper 6 is provided on the end of the connecting post 3 away from the bolt body 1. The stopper 6 is formed by stamping or riveting one end of the connecting post 3. Its diameter is approximately the same as the outer diameter of the connecting post 3 and the interior of the movable threaded sleeve 2. Its purpose is to limit the movable threaded sleeve 2 and prevent it from falling.

[0036] Example 3:

[0037] like Figure 4 As shown, this embodiment provides a double-bolt head bolt for butt connection, and the disclosed technical features are basically the same as those provided in the first embodiment, except that:

[0038] In this embodiment, the end of the connecting column 3 away from the bolt body 1 ( Figure 4 A countersunk bolt 7 is connected to the lower end of the screw sleeve 2, and the bolt head portion of the countersunk bolt 7 has a larger diameter and is larger than the inner diameter of the movable threaded sleeve 2, so it can also limit the movable threaded sleeve 2 to prevent it from falling off.

[0039] Example 4:

[0040] like Figure 5-Figure 6As shown, a method for connecting double-bolt head bolts for butt connection according to the first embodiment includes the following steps:

[0041] S1. First, rotate the movable threaded sleeve 2 to align the bolt limiting groove 101 and the threaded sleeve limiting groove 201. Then, install the limiting rod 4 in the bolt limiting groove 101 and the threaded sleeve limiting groove 201, so that the bolt body 1, the connecting column 3 and the movable threaded sleeve 2 form an integral structure.

[0042] S2, such as Figure 5 As shown, use a wrench to rotate the hexagonal bolt head portion of the bolt body 1 to thread the movable threaded sleeve 2 into a threaded hole on a component to be connected;

[0043] S3. Then remove the limiting rod 4 to separate the movable threaded sleeve 2 from the bolt body 1 (and the connecting column 3);

[0044] S4, such as Figure 6 As shown, the hexagonal bolt head portion of the bolt body 1 is rotated again with a wrench to thread the external thread of the bolt into the threaded hole of another component to be connected, thereby connecting the two components.

[0045] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A double-head bolt for butt joint, characterized by: It includes a bolt body, a movable threaded sleeve and a limiting rod, one end of the bolt body is provided with a bolt external thread, the other end of the bolt body is fixed with a connecting column, the movable threaded sleeve is rotatably connected to the outer side of the connecting column, the outer wall of the movable threaded sleeve is provided with a threaded sleeve external thread, the bolt body is provided with a bolt limiting groove, the movable threaded sleeve is provided with a threaded sleeve limiting groove, and the limiting rod can be detachably connected to the bolt limiting groove and the threaded sleeve limiting groove.

2. The double-bolt head bolt for butt joint according to claim 1, characterized in that: A clamping groove is provided on one end of the connecting column away from the bolt body, and an axis clamp is provided in the clamping groove.

3. The double-bolt head bolt for butt joint according to claim 1, characterized in that: A limiting portion is provided on one end of the connecting column away from the bolt body.

4. The double-bolt head bolt for butt connection according to claim 1, characterized in that: A countersunk bolt is connected to one end of the connecting column away from the bolt body.

5. A method for connecting double-bolt head bolts for butt joints according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Install the limiting rod into the limiting groove of the bolt and the limiting groove of the threaded sleeve; S2. Rotate the bolt body to thread the movable threaded sleeve into a threaded hole on a component to be connected; S3, remove the limit rod; S4. Turn the bolt body to thread the external thread of the bolt into the threaded hole of another component to be connected.

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