Bolt with double bolt heads

Abstract

The utility model discloses a bolt with double bolt heads, and relates to the technical field of bolts. The bolt comprises a first bolt head and a second bolt head connected with one end face of the first bolt head, studs are fixed to the opposite end faces of the first bolt head and the second bolt head, and a hexagonal opening is formed in the middle of the end face, opposite to the second bolt head, of the first bolt head. A hexagonal block inserted into the hexagonal opening is fixed to the end, opposite to the first bolt head, of the second bolt head, inserting holes are formed in the positions, corresponding to the through holes, of the inner side wall of the hexagonal opening, assembling rods are inserted into the inserting holes and the through holes, and the positions, located in the inserting holes, of the peripheral side of the movable ring groove are slidably sleeved with baffle rings. The hexagonal block is assembled in the hexagonal opening through the assembly rod pair, the assembly rod is limited in the insertion hole and the through hole through the baffle ring, and the problems that the disassembly and combination effects are not achieved, single replacement cannot be achieved, the assembled part cannot be positioned, and the assembly stability is insufficient are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to bolts, and particularly relates to a double-bolt head bolt. Background Art

[0002] Stud bolts, also called stud screws or studs, are used to connect machinery for fixed connection. Stud bolts have threads on both ends, and the screw in the middle can be thick or thin. They are generally used in mining machinery, bridges, automobiles, motorcycles, and boiler steel structures. However, they still have the following disadvantages in actual use:

[0003] 1. When using existing double-bolt head bolts, most of them adopt an integrated structure, so they cannot be disassembled and assembled. When the single head has slipping teeth and cannot be used normally, the entire bolt needs to be replaced;

[0004] 2. When using double-bolt head bolts, since there is no positioning treatment for the assembly parts, the assembly structure is easy to fall off, resulting in insufficient assembly stability, which will affect the normal use of the double-bolt head bolts. Utility Model Content

[0005] The purpose of the utility model is to provide a double-bolt head bolt, which assembles the hexagonal block inside the hexagonal mouth through an assembly rod and limits the assembly rod inside the plug-in hole and the through hole through a retaining ring, thereby solving the problems of lack of disassembly and assembly function, inability to achieve single replacement and lack of positioning processing for the assembly part, which leads to insufficient assembly stability.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a double-bolt head bolt, comprising a bolt head one and a bolt head two connected with the end face of the bolt head one, the end faces opposite to the bolt head one and the bolt head two are both fixed with studs, a hexagonal opening is provided at the middle of the end face of the bolt head one relative to the bolt head two, a hexagonal block plugged in the inner position of the hexagonal opening is fixed at the end of the bolt head two relative to the bolt head one, a through hole is provided on the surface side of the hexagonal block, plugging holes are provided at the positions of the inner side walls of the hexagonal opening corresponding to the through holes, assembly rods are plugged in the plugging holes and the insides of the through holes, a movable ring groove is provided on the peripheral side of the bolt head one, and a retaining ring is provided on the peripheral side of the movable ring groove at the position of the plugging hole for sliding sleeve.

[0008] Furthermore, a reinforcement opening is provided at the front end of the bolt head 1 at the end angle position of the hexagonal opening.

[0009] Furthermore, a reinforcement strip slidably inserted in the inner position of the reinforcement opening is fixed to the rear end of the second bolt head.

[0010] Furthermore, the plug-in holes penetrate through the peripheral side surfaces of the movable annular groove, and the assembly rods are respectively located at adjacent internal positions of the plug-in holes.

[0011] Furthermore, four springs evenly distributed in a ring shape are fixed to the rear side surface of the retaining ring, and the rear ends of the springs are fixedly connected to the rear side surface of the movable ring groove.

[0012] Furthermore, four positioning rods are fixed to the rear side of the movable ring groove and slide through the internal position of the spring respectively. Positioning holes are opened on the front side of the retaining ring at the positions corresponding to the positions of the positioning rods. The front ends of the positioning rods pass through the positioning holes and are flush with the front end face of the bolt head.

[0013] The utility model has the following beneficial effects:

[0014] 1. When the utility model is in use, one end of the assembly rod is initially inserted into the interior of the plug-in hole, so that the assembly rod blocks the retaining ring to limit it. At this time, the through hole on the hexagonal mouth is controlled to be in a state of front-to-back position consistency with the plug-in hole, thereby inserting the hexagonal blocks on the two end faces of the bolt head into the internal position of the hexagonal mouth, and then the reinforcement strip is completely inserted into the interior of the reinforcement mouth, and the plug-in hole and the through hole are in the same straight line. At this time, the assembly rod can be completely passed through the interior of the plug-in hole, so that the assembly rod is in the position state of the plug-in hole, the through hole and the plug-in hole, thereby realizing the combined processing of the bolt head 1 and the bolt head 2, which is convenient for single replacement of the two, and at the same time, the two can be used in a single manner.

[0015] 2. When the utility model is in use, the spring pushes the retaining ring so that the retaining ring blocks the port position of the plug-in hole again, ensuring that the assembly rod cannot fall off in the internal position of the plug-in hole, thereby achieving the limit position of the retaining ring on the assembly rod, so that the assembly rod can be stably plugged into the internal positions of the through hole and the plug-in hole, thereby achieving stable assembly between the bolt head one and the bolt head two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a structural diagram of the bolt head 2 in the utility model;

[0019] Figure 3 This is a structural diagram of a bolt head and a retaining ring in the utility model;

[0020] Figure 4 This is a structural diagram of the bolt head in the utility model;

[0021] Figure 5It is the structural diagram of the middle retaining ring of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Bolt head one; 101. Movable ring groove; 102. Hexagonal mouth; 103. Plug-in hole; 104. Positioning rod; 105. Reinforcement mouth; 2. Bolt head two; 201. Hexagonal block; 202. Through hole; 203. Reinforcement strip; 3. Stud; 4. Retaining ring; 401. Spring; 402. Positioning hole; 5. Assembly rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-5 As shown, the utility model is a double-bolt head bolt, comprising a bolt head 1 and a bolt head 2 connected to the end face of the bolt head 1, studs 3 are fixed to the opposite end faces of the bolt head 1 and the bolt head 2, a hexagonal opening 102 is provided in the middle of the end face of the bolt head 2 relative to the bolt head 2, a hexagonal block 201 inserted in the inner position of the hexagonal opening 102 is fixed to the end of the bolt head 22 relative to the bolt head 1, a through hole 202 is provided on the surface side of the hexagonal block 201, and plug-in holes 103 are provided at the inner side walls of the hexagonal opening 102 corresponding to the position of the through hole 202, assembly rods 5 are inserted in the plug-in holes 103 and the inside of the through hole 202, a movable annular groove 101 is provided on the peripheral side of the bolt head 1, and a retaining ring 4 is slidably sleeved on the peripheral side of the movable annular groove 101 at the position of the plug-in hole 103.

[0026] Among them Figure 1 , 2 As shown in Figures 3 and 4, a reinforcement opening 105 is provided at the front end of the bolt head 1 at the end angle position of the hexagonal opening 102, and a reinforcement strip 203 is fixed to the rear end of the bolt head 22 and is slidably inserted in the inner position of the reinforcement opening 105. When the assembly rod 5 has not yet penetrated from the insertion hole 103 to the inner position of the through hole 202, the reinforcement strip 203 is inserted in the inner position of the reinforcement opening 105, and the reinforcement strip 203 plays a preliminary limiting role to prevent the hexagonal block 201 from falling out of the inner position of the hexagonal opening 102. The insertion hole 103 penetrates the peripheral side position of the movable ring groove 101, and the assembly rods 5 are respectively located in the adjacent inner positions of the insertion holes 103.

[0027] Among them Figure 1 , 3As shown in Figures 4 and 5, four springs 401 evenly distributed in an annular shape are fixed to the rear side of the retaining ring 4. When the retaining ring 4 moves backward on the peripheral side of the movable ring groove 101, the retaining ring 4 will compress the spring 401, and the rear ends of the springs 401 are fixedly connected to the rear side of the movable ring groove 101. Four positioning rods 104 that slide through the internal positions of the springs 401 are fixed to the rear side of the movable ring groove 101. Since the positioning rods 104 pass through the springs 401, the positioning rods 104 limit the springs 401, so that the springs 4 01After being compressed, the positioning rod 104 can ensure that the spring 401 will not be excessively bent. A positioning hole 402 is opened on the front side of the retaining ring 4 at the position corresponding to the positioning rod 104. The front end of the positioning rod 104 passes through the positioning hole 402 and is flush with the front end surface of the bolt head 1. Since the positioning rod 104 is inside the positioning hole 402, the positioning rod 104 limits the retaining ring 4, so that the retaining ring 4 cannot rotate inside the movable ring groove 101, thereby ensuring that the retaining ring 4 will not drive the spring 401 to rotate.

[0028] A specific application of this embodiment is: through the use of the above-mentioned structure, when the bolt head 1 and the bolt head 2 are combined, the retaining ring 4 is first moved backward inside the movable ring groove 101, so that the retaining ring 4 exposes the plug hole 103, and one end of the assembly rod 5 is initially inserted into the plug hole 103, so that the assembly rod 5 blocks the retaining ring 4 to limit its position, and at this time, the through hole 202 on the hexagonal mouth 102 is controlled to be in the same front and rear position as the plug hole 103, thereby inserting the hexagonal block 201 on the end face of the bolt head 2 into the hexagonal mouth 102. The internal position is made so that the reinforcement strip 203 is completely inserted into the interior of the reinforcement opening 105, and the plug-in hole 103 and the through hole 202 are in the same straight line. At this time, the assembly rod 5 can be completely passed through the interior of the plug-in hole 103, so that the assembly rod 5 is in the position state of the plug-in hole 103, the through hole 202 and the plug-in hole 103, and the retaining ring 4 is no longer limited by the assembly rod 5. The spring 401 pushes the retaining ring 4 to move forward, so that the retaining ring 4 blocks the port position of the plug-in hole 103 again, ensuring that the assembly rod 5 cannot fall off in the internal position of the plug-in hole 103.

[0029] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A double-bolt head bolt, comprising a bolt head 1 (1) and a bolt head 2 (2) connected to the end surface of the bolt head 1 (1), characterized in that: The opposite end faces of the bolt head 1 (1) and the bolt head 2 (2) are both fixed with studs (3); the bolt head 1 (1) is provided with a hexagonal opening (102) in the middle of the end face relative to the bolt head 2 (2); the bolt head 2 (2) is fixed with a hexagonal block (201) inserted into the inner position of the hexagonal opening (102) at the end relative to the bolt head 1 (1); a through hole (202) is provided on the surface side of the hexagonal block (201); an insertion hole (103) is provided on the inner side wall of the hexagonal opening (102) at a position corresponding to the through hole (202); an assembly rod (5) is inserted into the inside of the insertion hole (103) and the through hole (202); a movable annular groove (101) is provided on the peripheral side of the bolt head 1 (1); a retaining ring (4) is provided on the peripheral side of the movable annular groove (101) at the position of the insertion hole (103) in a sliding sleeve.

2. A double-bolt head bolt according to claim 1, characterized in that: A reinforcement opening (105) is provided at the front end of the bolt head (1) at the end angle position of the hexagonal opening (102).

3. A double-bolt head bolt according to claim 2, characterized in that: A reinforcing strip (203) is fixed to the rear end of the second bolt head (2) and is slidably inserted into the inner position of the reinforcing opening (105).

4. A double-bolt head bolt according to claim 1, characterized in that: The plug-in holes (103) penetrate the peripheral side surfaces of the movable annular groove (101), and the assembly rods (5) are respectively located at adjacent internal positions of the plug-in holes (103).

5. A double-bolt head bolt according to claim 1, characterized in that: Four springs (401) evenly distributed in a ring shape are fixed to the rear side surface of the retaining ring (4), and the rear ends of the springs (401) are fixedly connected to the rear side surface of the movable ring groove (101).

6. A double-bolt head bolt according to claim 5, characterized in that: Four positioning rods (104) are fixed to the rear side of the movable ring groove (101) and slide through the internal positions of the spring (401) respectively. Positioning holes (402) are opened at the front side of the retaining ring (4) corresponding to the positions of the positioning rods (104). The front ends of the positioning rods (104) pass through the positioning holes (402) and are flush with the front end surface of the bolt head (1).

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