Round nut fastening tool and torque conversion method thereof

Abstract

The invention discloses a round nut fastening tool which comprises two half embracing rings, at least one jackscrew, at least one adapter block and a torque wrench, the two half embracing rings are coaxially and detachably connected to form a complete ring body, the inner diameter of the ring body is matched with the outer diameter of a round nut, the jackscrew is installed on the ring body in a radial thread mode, and the adapter block is connected with the torque wrench. At least one limiting hole is formed in the outer wall of the round nut, the jackscrew can stretch into or be separated from the limiting hole by screwing the jackscrew, the adapter block is connected to the outer wall of the ring body, a rectangular groove is formed in the adapter block, a rectangular block is arranged on one side of one end of the torque wrench, and the rectangular block is connected with the annular groove. The rectangular blocks can be inserted into the rectangular grooves in a matched mode. The torque fastening of the round nut can be achieved, the assembling and disassembling processes are simple and rapid, reusability is achieved, the tool manufacturing cost is effectively saved, and the mounting efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of building installation, and in particular to a circular nut fastening tool and a torque conversion method thereof. Background Art

[0002] In the current field of mechanical manufacturing and assembly, bolts and nuts are key connectors and are widely used in various equipment and structures. Traditional bolts and nuts are mostly designed with external hexagonal shapes. This design is not only convenient for using internal hexagon sockets with torque wrenches (such as Figure 1 ) or open-end torque wrench for tightening, and also ensures stability and reliability during the tightening process. By adjusting the set value on the torque wrench, the operator can accurately tighten the bolt or nut to the required design torque without complicated torque conversion, greatly improving work efficiency and accuracy.

[0003] However, in some special projects, such as the assembly of a specific mechanical equipment or structure, round nuts may be used. The design of this round nut is significantly different from the traditional hexagonal nut, resulting in the inability of existing sockets or open-end torque wrenches to match it. This undoubtedly brings great challenges to the tightening work.

[0004] To make matters more complicated, these round nuts are often already installed on the screw, and due to space limitations or structural requirements, it is impossible to apply force directly on top of them for tightening. This means that operators can only operate on the side of the nut, which undoubtedly increases the difficulty and complexity of tightening. In this case, if traditional torque wrenches are still used for tightening, direct torque application will not be possible. Summary of the invention

[0005] In view of the above problems existing in the existing round nut tightening, the present invention aims to provide a round nut tightening tool and a torque conversion method thereof which are easy to assemble and can be used with an existing torque wrench for torque tightening.

[0006] The specific technical solutions are as follows:

[0007] A circular nut tightening tool, comprising:

[0008] Two half rings, the two half rings are coaxially detachably connected to form a complete ring body, and the inner diameter of the ring body matches the outer diameter of the circular nut;

[0009] At least one top screw, the top screw is radially threadedly mounted on the ring body, and the outer wall of the circular nut has at least one limiting hole, and the top screw can be extended into or out of the limiting hole by twisting the top screw;

[0010] At least one adapter block, the adapter block is connected to the outer wall of the ring body, and the adapter block has a rectangular groove;

[0011] A torque wrench, wherein one side of one end of the torque wrench has a rectangular block, and the rectangular block can be matched and inserted into the rectangular groove. When the other end of the torque wrench is rotated, the torque wrench can drive the ring body to rotate through the rectangular block and the rectangular groove, and then drive the circular nut to rotate.

[0012] As a further improvement and optimization of this solution, both ends of one of the half-rings have a first fitting block, and both ends of the other half-ring have a second fitting block, and the two first fitting blocks are respectively detachably connected to the two second fitting blocks.

[0013] As a further improvement and optimization of this solution, the first fitting block and the second fitting block are connected by bolts.

[0014] As a further improvement and optimization of this solution, the first mating block has a first threaded hole, the second mating block has a second threaded hole coaxial with the first threaded hole, and the bolt is threadedly installed in the first threaded hole and the second threaded hole.

[0015] As a further improvement and optimization of this solution, the bottom of the first mating block has a positioning block, the first threaded hole passes through the positioning block, the top of the second mating block has a positioning groove, the second threaded hole is arranged at the bottom of the positioning groove, and the positioning block is positioned and matched with the positioning groove.

[0016] As a further improvement and optimization of the present solution, two adapter blocks are provided and are respectively connected to the outer walls of the two half-rings.

[0017] As a further improvement and optimization of this solution, the adapter block and the half-embracing ring are an integrally formed structure.

[0018] As a further improvement and optimization of the present solution, the outer wall of each half-embracing ring is radially provided with two third threaded holes, four top screws are provided, the four top screws are respectively threadedly installed in the four third threaded holes, and four limiting holes are correspondingly provided.

[0019] As a further improvement and optimization of this solution, the four limiting holes are arranged at equal intervals along the circumference of the circular nut.

[0020] A torque conversion method for a circular nut fastening tool, comprising any one of the circular nut fastening tools described above, the torque conversion method comprising:

[0021] Step S1: processing two half rings of corresponding sizes according to the size of the circular nut, and connecting the two rings into a ring body;

[0022] Step S2: measuring the distance between the rectangular groove and the center of the ring body, and recording the distance as L1;

[0023] Step S3: measuring the length of the torque wrench as L2;

[0024] Step S4: Calculate the torque conversion according to the formula

[0025] T1=(T·L2) / (L1+L2)

[0026] Where, T1: tightening torque value of torque wrench using the tightening tool;

[0027] T: Tightening torque for tightening the round nut.

[0028] Compared with the prior art, the above technical solution has the following positive effects:

[0029] (1) The present invention can realize the torque tightening of circular nuts, and the assembly and disassembly process is simple and fast, and it is reusable, which effectively saves the tooling manufacturing cost, significantly improves the installation efficiency, and ensures that there is no risk of equipment damage. In addition, by making tools of different specifications, it can also be widely applicable to the torque tightening requirements of circular nuts of various specifications.

[0030] (2) In order to improve the connection effect of the two half rings in the present invention, both ends of one half ring have a first fitting block, and both ends of the other half ring have a second fitting block, and the two first fitting blocks are respectively detachably connected to the two second fitting blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a hexagon socket in the prior art that cooperates with a torque wrench to tighten a hexagonal bolt;

[0032] Figure 2 A schematic structural diagram of a circular nut thread mounted on a screw rod in a circular nut fastening tool and a torque conversion method thereof according to the present invention;

[0033] Figure 3 A schematic diagram of a circular nut fastening tool and a fastening tool structure in a torque conversion method thereof according to the present invention;

[0034] Figure 4 An exploded schematic diagram of a circular nut fastening tool and a fastening tool in a torque conversion method thereof according to the present invention;

[0035] In the attached figure: 1. torque wrench; 2. round nut; 3. half ring; 4. bolt; 5. top screw; 6. adapter block; 11. rectangular block; 21. limit hole; 31. first fitting block; 32. second fitting block; 33. third threaded hole; 61. rectangular groove; 311. first threaded hole; 312. positioning block; 321. second threaded hole; 322. positioning groove. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0037] Figure 1 It is a structural schematic diagram of tightening a hexagonal bolt with a hexagon socket and a torque wrench in the prior art. Figure 2 A schematic diagram of a structure in which a round nut thread is installed on a screw rod in a round nut fastening tool and a torque conversion method thereof according to the present invention, Figure 3 A schematic diagram of a circular nut fastening tool and a fastening tool structure in a torque conversion method of the present invention, Figure 4 An exploded schematic diagram of a circular nut fastening tool and a fastening tool in a torque conversion method thereof according to the present invention is shown in FIG. Figures 1 to 4 As shown, a circular nut fastening tool of a preferred embodiment is shown, comprising two half rings 3, at least one top screw 5, at least one adapter block 6 and a torque wrench 1. The two half rings 3 are coaxially detachably connected to form a complete ring body, and the inner diameter of the ring body matches the outer diameter of the circular nut 2. The top screw 5 is radially threadedly installed on the ring body, and the outer wall of the circular nut 2 has at least one limiting hole 21. By twisting the top screw 5, the top screw 5 can be extended into or out of the limiting hole 21. The adapter block 6 is connected to the outer wall of the ring body, and the adapter block 6 has a rectangular groove 61. One side of one end of the torque wrench 1 has a rectangular block 11, and the rectangular block 11 can be matched and inserted into the rectangular groove 61. When the other end of the torque wrench 1 is turned, the torque wrench 1 can drive the ring body to rotate through the rectangular block 11 and the rectangular groove 61, thereby driving the circular nut 2 to rotate.

[0038] In this embodiment, the torque tightening of the circular nut can be achieved, and the assembly and disassembly process is simple and quick, and it is reusable, which effectively saves the tooling manufacturing cost, significantly improves the installation efficiency, and ensures that there is no risk of equipment damage. In addition, by making tools of different specifications, it can also be widely used for the torque tightening requirements of circular nuts of various specifications.

[0039] Furthermore, as a preferred embodiment, in order to improve the connection effect of the two half rings 3, both ends of one half of the ring 3 have a first fitting block 31, and both ends of the other half of the ring 3 have a second fitting block 32, and the two first fitting blocks 31 are respectively detachably connected to the two second fitting blocks 32.

[0040] Furthermore, as a preferred embodiment, in order to facilitate the disassembly of the ring body, the first fitting block 31 and the second fitting block 32 are connected by bolts 4.

[0041] Furthermore, as a preferred embodiment, the first mating block 31 has a first threaded hole 311 , the second mating block 32 has a second threaded hole 321 coaxial with the first threaded hole 311 , and the bolt 4 is threadedly installed in the first threaded hole 311 and the second threaded hole 321 .

[0042] More preferably, the thickness of the first fitting block 31 and the second fitting block 32 are both half of the thickness of the ring body.

[0043] Furthermore, as a preferred embodiment, in order to further improve the connection effect of the two half rings 3, the bottom of the first fitting block 31 is provided with a positioning block 312, the first threaded hole 311 passes through the positioning block 312, the top of the second fitting block 32 is provided with a positioning groove 322, the second threaded hole 321 is arranged at the bottom of the positioning groove 322, and the positioning block 312 is positioned and matched with the positioning groove 322.

[0044] More preferably, the positioning block 312 and the positioning slot 322 are both rectangular structures.

[0045] Furthermore, as a preferred embodiment, two adapter blocks 6 are provided and are respectively connected to the outer walls of the two half embrace rings 3 .

[0046] Furthermore, as a preferred embodiment, the adapter block 6 and the half-ring 3 are an integrally formed structure.

[0047] Furthermore, as a preferred embodiment, the outer wall of each half of the holding ring 3 is radially provided with two third threaded holes 33, four top screws 5 are provided, and the four top screws 5 are respectively threadedly installed in the four third threaded holes 33, and four limiting holes 21 are correspondingly provided.

[0048] Furthermore, as a preferred embodiment, the four limiting holes 21 are arranged at equal intervals along the circumference of the circular nut 2 .

[0049] A torque conversion method for a circular nut 2 fastening tool, comprising any one of the circular nut 2 fastening tools described above, the torque conversion method comprising:

[0050] Step S1: processing two halves of the ring 3 of corresponding size according to the size of the circular nut 2, and connecting the two rings into a ring body;

[0051] Step S2: measuring the distance between the rectangular groove 61 and the center of the ring body, and recording the distance as L1;

[0052] Step S3: measuring the length of the torque wrench 1 as L2;

[0053] Step S4: Calculate the torque conversion according to the formula

[0054] T1=(T·L2) / (L1+L2)

[0055] Where, T1: tightening torque value of torque wrench 1 using the tightening tool;

[0056] T: Tightening torque for tightening round nut 2.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A circular nut tightening tool, characterized in that: include: Two half rings, the two half rings are coaxially detachably connected to form a complete ring body, and the inner diameter of the ring body matches the outer diameter of the circular nut; At least one top screw, the top screw is radially threadedly mounted on the ring body, and the outer wall of the circular nut has at least one limiting hole, and the top screw can be extended into or out of the limiting hole by twisting the top screw; At least one adapter block, the adapter block is connected to the outer wall of the ring body, and the adapter block has a rectangular groove; A torque wrench, wherein one side of one end of the torque wrench has a rectangular block, and the rectangular block can be matched and inserted into the rectangular groove. When the other end of the torque wrench is rotated, the torque wrench can drive the ring body to rotate through the rectangular block and the rectangular groove, and then drive the circular nut to rotate.

2. The circular nut tightening tool according to claim 1, characterized in that: Both ends of one of the half-embracing rings are provided with a first fitting block, and both ends of the other half-embracing ring are provided with a second fitting block, and the two first fitting blocks are respectively detachably connected to the two second fitting blocks.

3. The circular nut fastening tool according to claim 2, characterized in that: The first engaging block and the second engaging block are connected by bolts.

4. The circular nut fastening tool according to claim 3, characterized in that: The first mating block has a first threaded hole, the second mating block has a second threaded hole coaxial with the first threaded hole, and the bolt is threadedly installed in the first threaded hole and the second threaded hole.

5. The circular nut fastening tool according to claim 4, characterized in that: The bottom of the first mating block has a positioning block, the first threaded hole passes through the positioning block, the top of the second mating block has a positioning groove, the second threaded hole is arranged at the bottom of the positioning groove, and the positioning block is positioned and matched with the positioning groove.

6. The circular nut fastening tool according to claim 1, characterized in that: The adapter blocks are provided with two and are respectively connected to the outer walls of the two half-embracing rings.

7. The circular nut fastening tool according to claim 6, characterized in that: The adapter block and the half-embracing ring are an integrally formed structure.

8. The circular nut fastening tool according to claim 1, characterized in that: Two third threaded holes are radially arranged on the outer wall of each half-embracing ring, four top screws are arranged, and the four top screws are respectively threadedly installed in the four third threaded holes, and four limiting holes are correspondingly arranged.

9. The circular nut fastening tool according to claim 8, characterized in that: The four limiting holes are arranged at equal intervals along the circumference of the circular nut.

10. A torque conversion method for a circular nut tightening tool, characterized in that: The circular nut tightening tool comprising any one of claims 1 to 9, wherein the torque conversion method comprises: Step S1: processing two half rings of corresponding sizes according to the size of the circular nut, and connecting the two rings into a ring body; Step S2: measuring the distance between the rectangular groove and the center of the ring body, and recording the distance as L1; Step S3: measuring the length of the torque wrench as L2; Step S4: Calculate the torque conversion according to the formula T1=(T·L2) / (L1+L2) Where, T1: tightening torque value of torque wrench using the tightening tool; T: Tightening torque for tightening the round nut.

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