Connecting structure convenient to disassemble

Abstract

The utility model belongs to the field of mechanical assembly, and relates to a connecting structure convenient to disassemble, which comprises a connecting bolt and an anti-displacement quick-change screw sleeve in threaded connection with the connecting bolt. The connecting structure convenient to disassemble is convenient to assemble and disassemble, capable of preventing taking out and high in replaceability.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical assembly and relates to a connection structure, in particular to a connection structure that is easy to disassemble. Background Art

[0002] Common connectors are usually fixed with bolts. Sometimes, in order to enhance the connection strength or improve the wear resistance, the protective threads are fixed with threaded steel sleeves. This often has the following disadvantages: 1) When the working conditions of the connected bolts are relatively harsh and need to be disassembled frequently, it is often found that the bolts cannot be removed or even the bolt heads are twisted off during disassembly. At this time, the threads of the bolts and the threads of the connector are bonded, and the thread pair is damaged. This situation often causes the entire connector to need repair or scrapping due to the damage to the thread pair, seriously affecting the overall stability of the mechanism. 2) There is a risk that the threaded steel sleeves are easily damaged and pulled out. If the bolts are broken inside, they still cannot be easily disassembled. Special tools are required to disassemble the threaded steel sleeves, and the operator's skills are required. 3) The anti-loosening performance of the threaded steel sleeves is limited, and it is not suitable for occasions with high requirements for reverse clearance. Utility Model Content

[0003] In order to solve the above technical problems existing in the background technology, the utility model provides a convenient detachable connection structure which is easy to assemble and disassemble, prevents being dragged out, and has strong replaceability.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A connection structure that is easy to disassemble is characterized in that the connection structure that is easy to disassemble includes a connection bolt and an anti-displacement quick-change screw sleeve that is threadedly connected to the connection bolt.

[0006] The above-mentioned anti-slip quick-change screw sleeve is an integrated structure, and the anti-slip quick-change screw sleeve includes a connecting column and an anti-slip part fixedly arranged at the end of the connecting column; the anti-slip part is an overall special-shaped structure; the connecting bolt extends into the connecting column along the axial direction of the connecting column and is connected to the connecting column thread; the anti-slip quick-change screw sleeve is overall T-shaped; the anti-slip part is placed in a connecting part whose shape matches the anti-slip part.

[0007] The above-mentioned anti-displacement quick-change screw sleeve is a split structure, and the anti-displacement quick-change screw sleeve includes a connecting column, a fixing part and a screw sleeve cover plate; the fixing part is fixedly arranged at the end of the connecting column; the fixing part and the connecting column form a T-shape as a whole; the screw sleeve cover plate and the T-shaped structure are coaxially arranged in the connecting part; the screw sleeve cover plate is used to prevent the T-shaped structure from displacing. The connecting bolt passes through the screw sleeve cover plate along the axial direction of the connecting column and extends into the connecting column and is threadedly connected to the connecting column.

[0008] The anti-slip quick-change screw sleeve formed by the screw sleeve cover plate and the T-shaped structure matches the shape of the connecting piece.

[0009] The screw sleeve cover plate is in a gantry-type structure as a whole; the fixing piece is in a straight-line shape as a whole.

[0010] The above-mentioned screw sleeve cover plate includes a first limiting column, a second limiting column and a collar; the first limiting column and the second limiting column are arranged on the circumferential side of the collar; the collar is placed on the top of the connecting column; the connecting bolt passes through the collar along the axial direction of the connecting column and extends into the connecting column and is threadedly connected to the connecting column; the first limiting column and the second limiting column are arranged on both sides of the long axis of the fixing member; the outer surface of the first limiting column and the outer surface of the second limiting column are both matched with the connecting member; the distance between the first limiting column and the second limiting column is less than the length of the long axis of the fixing member.

[0011] The top end surface of the first limiting column and the top end surface of the second limiting column are both provided with threaded holes.

[0012] The top of the connecting column is provided with a rotation working hole or a rotation working groove.

[0013] The above-mentioned conveniently disassembled connection structure further comprises a spring washer which is sleeved on the connection bolt and placed between the connection bolt and the anti-displacement quick-change screw sleeve.

[0014] The lower end of the anti-displacement quick-change screw sleeve is provided with a flexible support member embedded in the connecting member.

[0015] The advantages of the utility model are:

[0016] The utility model provides a connection structure that is easy to disassemble, including a connecting bolt and an anti-slip quick-change screw sleeve threadedly connected to the connecting bolt, wherein the anti-slip quick-change screw sleeve is an integrated structure or a split structure. Since, during use, the connecting member is a through groove and the connected member is also a through hole, there is no connection of a threaded pair. The connecting bolt and the anti-slip quick-change screw sleeve can ensure that the connecting member and the connected member will not be damaged by the problem of the threaded pair being damaged. At the same time, when there are harsh working conditions or the head of the connecting bolt is twisted off, it can be directly disassembled by destructive means and the anti-slip quick-change screw sleeve can be directly replaced, which greatly reduces the maintenance machining cost and time cost and is simple to operate. In addition, by removing the threaded pair between the connecting member or the connected member and the bolt, it is prioritized to ensure that important parts are not damaged. According to the damage frequency of the anti-slip quick-change screw sleeve under different working conditions, it can be determined whether the anti-slip quick-change screw sleeve is defined as a consumable. The anti-loosening performance of the connection structure is better, and the load is carried by the boss and the thread, so the connection strength is higher and the stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic structural diagram of the conveniently disassembled connection structure (simple type) provided by the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure;

[0019] Figure 3 This is a schematic structural diagram of the convenient disassembly connection structure (preferred type) provided by the present invention;

[0020] Figure 4 yes Figure 3 Exploded diagram;

[0021] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure;

[0022] Figure 6 It is a three-dimensional structural diagram of the quick-change screw sleeve adopted in the utility model;

[0023] Figure 7 It is a three-dimensional structural diagram of the screw sleeve cover plate adopted in the utility model;

[0024] Figure 8 This is a schematic structural diagram of the flexible support member used in the conveniently disassembled connection structure (preferred type) of the present invention;

[0025] Figure 9 This is a schematic structural diagram of the flexible support member used in the conveniently disassembled connection structure (simple type) of the present invention;

[0026] in:

[0027] 1-connecting bolt; 2-spring washer; 3-connected part; 4-anti-displacement quick-change screw sleeve; 5-connecting part; 6-screw sleeve cover; 7-flexible support part. DETAILED DESCRIPTION

[0028] The utility model provides a connection structure that is easy to disassemble, including a connection bolt 1 and an anti-collision type quick-change screw sleeve 4 threadedly connected to the connection bolt 1, wherein the anti-collision type quick-change screw sleeve 4 is an integrated structure or a split structure.

[0029] The research and development concept of the present utility model is as follows: when connecting the connected part 3 and the connecting part 5, the anti-collision quick-change screw sleeve 4 is directly placed and clamped in the connecting part 5, and the connecting bolt 1 penetrates the connected part 3 and is threadedly connected to the anti-collision quick-change screw sleeve 4 in the connecting part 5, thereby achieving a quick connection between the connected part 3 and the connecting part 5. At the same time, because the anti-collision quick-change screw sleeve 4 itself has the function of preventing circumferential displacement, when the connecting bolt 1 is threadedly connected to the anti-collision quick-change screw sleeve 4, the anti-collision quick-change screw sleeve 4 is limited in position in the connecting part 5, prompting the connecting bolt 1 and the anti-collision quick-change screw sleeve 4 to be firmly connected. When it is necessary to remove the connected part 3 from the connecting part 5, on the one hand, since the anti-channeling quick-change screw sleeve 4 is limited in the connecting part 5, the anti-channeling quick-change screw sleeve 4 can be prevented from being pulled out when the connecting bolt 1 is tightened; on the other hand, when encountering harsh working conditions, excessive torque, etc., that is, the bolt head of the connecting bolt 1 is twisted off, the bolt rod is retained in the anti-channeling quick-change screw sleeve 4. After directly adjusting the position of the anti-channeling quick-change screw sleeve 4 in the connecting part 5, the two are no longer stuck, and the anti-channeling quick-change screw sleeve 4 and the bolt rod are directly pulled out as a whole to realize the removal of the connected part 3 from the connecting part 5.

[0030] See also Figure 1 as well as Figure 2 , is a simple and easy-to-disassemble connection structure provided by the present invention, which includes an integrated anti-slip quick-change screw sleeve 4. The anti-slip quick-change screw sleeve 4 includes a connecting column and an anti-slip part fixedly arranged at the end of the connecting column; the anti-slip part is a special-shaped structure as a whole; the connecting bolt 1 extends into the connecting column along the axial direction of the connecting column and is connected to the connecting column thread; the anti-slip quick-change screw sleeve 4 is T-shaped as a whole. When the integrated structure is used, the anti-slip quick-change screw sleeve 4 (the end of the anti-slip quick-change screw sleeve 4 is special-shaped to prevent the anti-slip quick-change screw sleeve 4 from rotating circumferentially in the connecting member 5) is inserted from the bottom end of the connecting member 5 (with a special-shaped through groove or stepped hole or countersunk end that matches the end of the quick-change screw sleeve 4), and then the connected member 3 is placed, aligned with the screw hole, and the connecting bolt 1 with the spring washer 2 is tightened according to the specified torque.

[0031] See also Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 as well as Figure 7, is a more preferred connection structure for easy disassembly provided by the present invention, which includes a split anti-displacement quick-change screw sleeve 4. The anti-displacement quick-change screw sleeve 4 includes a connecting column, a fixing part and a screw sleeve cover plate 6; the fixing part is fixedly arranged at the end of the connecting column and forms a T-shaped structure with the connecting column as a whole; the screw sleeve cover plate 6 and the T-shaped structure are coaxially arranged in the connecting member 5; the connecting bolt 1 passes through the screw sleeve cover plate 6 along the axial direction of the connecting column and extends into the connecting column to be threadedly connected to the connecting column. The connecting column and the screw sleeve cover plate 6 are coaxial and are both placed in the connecting member 5 along the axial direction of the connecting member 5; the fixing part matches the connecting member 5. For example, Figure 5 The connecting piece 5 is provided with a working hole with a T-shaped cross section, and the cross section of the upper end of the T-shaped working hole is nearly a "I" shape (such as Figure 4 ), the cross section of the lower end of the T-shaped working hole is circular (such as Figure 3 The T-shaped structure is inserted into the working hole from the upper or lower end of the connector 5 along the axial direction and then rotated at a certain angle (e.g., 90°). The screw cover plate 6 is then inserted into the working hole along the axial direction of the connector 5 and matches the inner wall of the axial working hole or countersunk hole of the connector 5, thereby limiting the T-shaped structure and preventing it from axially shifting.

[0032] See also Figure 6 , the fixing piece is in a straight line shape; see Figure 3 as well as Figure 4 , the screw cover plates 6 are placed on both sides of the fixing member along the axial direction of the fixing member. Figure 6 The top of the connecting column is provided with a rotation working hole or a rotation working groove, through which the connecting column can be rotated. Figure 4 as well as Figure 7 , the screw cover plate 6 includes a first limiting column, a second limiting column and a collar; the first limiting column and the second limiting column are arranged on the circumferential side of the collar; the collar is placed on the top of the connecting column; the connecting bolt 1 passes through the collar along the axial direction of the connecting column and extends into the connecting column and is connected to the connecting column thread; the first limiting column and the second limiting column are both coaxial with the connecting column; the first limiting column and the second limiting column are both arranged on both sides of the fixing member along the axial direction of the fixing member; the outer surface of the first limiting column and the outer surface of the second limiting column are matched with the connecting member 5. Exemplarily, the screw cover plate 6 is a gantry-type structure as a whole. When the screw cover plate 6 is extended from the working hole along the axial direction of the connecting member 5 as a whole, the T-shaped structure formed by the fixing member and the connecting column is restricted from moving in the connecting member 5.

[0033] See also Figure 7 The top surface of the first limiting column and the top surface of the second limiting column are both provided with threaded holes, through which screws or screws can be conveniently set in the threaded holes to facilitate the removal of the screw sleeve cover plate 6.

[0034] See also Figure 4When using the easily disassembled connection structure containing the split anti-channeling quick-change screw sleeve 4, place the connecting column of the anti-channeling quick-change screw sleeve 4 and the overall T-shaped structure formed by the fixing part into the through groove of the connecting part 5, and then use a flat-blade screwdriver to twist the rotating working hole or rotating working groove on the top of the connecting column to rotate the overall structure 90°. At this time, place the screw sleeve cover plate 6 into the through groove of the connecting part 5. The screw sleeve cover plate 6 prevents the quick-change screw sleeve 4 from rotating in the groove and prevents foreign matter from entering the groove. Then put on the connected part 3, align the hole position, and tighten the connecting bolt 1 with the spring washer 2 according to the specified torque. The replacement of the anti-collision quick-change screw sleeve 4 does not require special dedicated tooling. You only need to unscrew (or destroy) the connecting bolt 1, remove the connected part 3, and quickly and conveniently remove the screw sleeve cover plate 6 through the threaded holes on the top surface of the first limiting column and the top surface of the second limiting column (the inside is a through hole and can be removed directly. The threaded holes on both sides of the screw sleeve cover plate 6 are reserved for the convenience of removing the screw sleeve cover plate 6). Then, rotate the anti-collision quick-change screw sleeve 4 90° to take it out.

[0035] See also Figure 1 as well as Figure 3 The convenient disassembly connection structure provided by the present invention further includes a spring washer 2 which is sleeved on the connection bolt 1 and placed between the connection bolt 1 and the anti-displacement quick-change screw sleeve 4. Figure 8 as well as Figure 9 The convenient disassembly connection structure provided by the present invention also includes a flexible support member 7 arranged at the lower end of the anti-channeling quick-change screw sleeve 4 and embedded in the connecting member, which is used to provide support for the anti-channeling quick-change screw sleeve 4 during the equipment process.

Claims

1. A connection structure that is easy to disassemble, characterized in that: The conveniently disassembled connection structure comprises a connecting bolt (1) and an anti-displacement quick-change screw sleeve (4) threadedly connected to the connecting bolt (1).

2. The convenient disassembly connection structure according to claim 1, characterized in that: The anti-slip quick-change screw sleeve (4) is an integrated structure, comprising a connecting column and an anti-slip part fixedly arranged at the end of the connecting column; the anti-slip part is a special-shaped structure as a whole; the connecting bolt (1) extends into the connecting column along the axial direction of the connecting column and is connected to the connecting column thread; the anti-slip quick-change screw sleeve (4) is T-shaped as a whole; the anti-slip part is placed in a connecting piece (5) that matches the shape of the anti-slip part.

3. The convenient disassembly connection structure according to claim 1, characterized in that: The anti-displacement quick-change screw sleeve (4) is a split structure, and the anti-displacement quick-change screw sleeve (4) includes a connecting column, a fixing member and a screw sleeve cover plate (6); the fixing member is fixedly arranged at the end of the connecting column and forms a T-shaped structure with the connecting column as a whole; the screw sleeve cover plate (6) and the T-shaped structure are coaxially arranged in the connecting member (5), and the screw sleeve cover plate (6) is used to prevent the T-shaped structure from displacing; the connecting bolt (1) passes through the screw sleeve cover plate (6) along the axial direction of the connecting column and extends into the connecting column to be connected to the connecting column thread.

4. The convenient disassembly connection structure according to claim 3, characterized in that: The screw sleeve cover plate (6) and the T-shaped structure form an anti-slip quick-change screw sleeve (4), and the shape of the anti-slip quick-change screw sleeve (4) matches that of the connecting piece (5).

5. The convenient disassembly connection structure according to claim 4, characterized in that: The screw sleeve cover plate (6) is in a gantry-type structure as a whole; and the fixing piece is in a straight-line shape as a whole.

6. The convenient disassembly connection structure according to claim 5, characterized in that: The screw cover plate (6) includes a first limiting column, a second limiting column and a collar; the first limiting column and the second limiting column are arranged on the circumference of the collar; the collar is placed on the top of the connecting column; the connecting bolt (1) passes through the collar along the axial direction of the connecting column and extends into the connecting column to be connected to the connecting column thread; the first limiting column and the second limiting column are both arranged on both sides of the long axis of the fixing part; the outer surface of the first limiting column and the outer surface of the second limiting column are both matched with the connecting part (5); the distance between the first limiting column and the second limiting column is less than the length of the long axis of the fixing part.

7. The convenient disassembly connection structure according to claim 6, characterized in that: The top end surface of the first limiting column and the top end surface of the second limiting column are both provided with threaded holes.

8. The convenient disassembly connection structure according to claim 7, characterized in that: The top of the connecting column is provided with a rotation working hole or a rotation working groove.

9. The convenient disassembly connection structure according to any one of claims 1 to 8, characterized in that: The conveniently disassembled connection structure further comprises a spring washer (2) sleeved on the connection bolt (1) and placed between the connection bolt (1) and the anti-displacement quick-change screw sleeve (4).

10. The convenient disassembly connection structure according to claim 9, characterized in that: The lower end of the anti-displacement quick-change screw sleeve (4) is provided with a flexible support member embedded in the connecting member (5).

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