Double-thread screw assembly tool

Abstract

The double-thread screw assembling tool comprises a hexagonal prism, a first thread groove is formed in the right side of the hexagonal prism, a second thread groove is formed in the inner wall of the left side of the first thread groove, and a third thread groove is formed in the inner wall of the left side of the second thread groove. A fourth threaded groove is formed in the inner wall of the left side of the third threaded groove, and a fifth threaded groove is formed in the inner wall of the left side of the fourth threaded groove in a penetrating mode. And the reverse limiting mechanism comprises an abutting screw penetrating through the fifth threaded groove, the left end of the abutting screw is fixedly connected with a nut, and the right end of the abutting screw extends into the fourth threaded groove. In the using process of the assembly tool, by means of the arrangement of a plurality of different thread grooves, the adaptability of use is improved, the assembly tool can be matched with double-thread screws of various different models, and in addition, the situation that parts are lost can be avoided by means of the use of a circular plate.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rod installation, in particular to a double-head screw rod assembly tool. Background Art

[0002] When assembling an existing diesel engine, it is often necessary to install a double-headed screw with threads on both ends, one end of which is threadedly connected to the threaded hole of the diesel engine. The existing assembly method is to add a sleeve nut to the thread of the free end, first tighten the nut and the double-headed screw into one, and then continue to tighten the nut to drive the double-headed screw to rotate and thus achieve a threaded connection with the fixed end and the diesel engine. Although this method can complete the installation of the double-headed screw, tightening the nut and the double-headed screw into one, and then tightening it with force will cause damage to the threads at the nut; when the nut needs to be removed after installation, the nut must be rotated in the opposite direction, but at this time the nut and the free end of the double-headed screw are in a stuck state, and its stability is higher than that of the fixed end. Therefore, it may cause the double-headed screw at the threaded hole of the diesel engine to rotate in the opposite direction, causing it to be unable to be tightened, affecting the assembly effect;

[0003] To this end, the utility model patent with publication number CN211306188U discloses a stud screw assembly tool, which is installed at the free end bolt of the stud screw and is used to tighten the fixed end bolt of the stud screw into the mounting hole of the diesel engine body, including a sleeve nut, the sleeve nut is provided with a first threaded hole matching the free end bolt on the side facing the stud screw, and the sleeve nut is provided with a second threaded hole on the side away from the stud screw, the second threaded hole is connected to the first threaded hole and has the opposite rotation direction; the sleeve nut is provided with a screw block on the side away from the stud screw, the screw block is provided with a brake bolt extending into the first threaded hole, and the brake bolt is threadedly connected to the second threaded hole. The new structure is simple and easy to use, and can avoid damage to the free end bolt of the stud screw when tightening, and at the same time avoid the loosening of the fixed end bolt that may be caused during disassembly, thereby improving assembly effect and efficiency;

[0004] However, in actual use, we found that the above-mentioned tooling can only be used for a single type of double-headed screws, and the actual adaptability is poor. In addition, the moving screw of the device may be completely separated from the fifth thread groove, which may easily lead to the loss of parts. Therefore, how to solve the above problem is what we need to consider. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a double-headed screw assembly tool. During the use of the assembly tool, it utilizes the setting of multiple different thread grooves to improve the adaptability of use and can be adapted to multiple different types of double-headed screws. In addition, the use of a circular plate can also avoid the loss of parts.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-head screw assembly tool comprises a hexagonal prism, a first thread groove is formed on the right side of the hexagonal prism, a second thread groove is formed on the left inner wall of the first thread groove, a third thread groove is formed on the left inner wall of the second thread groove, a fourth thread groove is formed on the left inner wall of the third thread groove, and a fifth thread groove is penetrated through the left inner wall of the fourth thread groove; a reverse limiting mechanism comprises a retaining screw extending through the fifth thread groove, a nut is fixedly connected to the left end of the retaining screw, and the right end of the retaining screw extends into the fourth thread groove.

[0008] Preferably, the inner diameters of the first thread groove, the second thread groove, the third thread groove and the fourth thread groove decrease sequentially.

[0009] Preferably, a circular plate is fixedly connected to the right end of the abutting screw rod, and the outer diameter of the circular plate is larger than the inner diameter of the fifth thread groove.

[0010] Preferably, the thread directions of the first thread groove, the second thread groove, the third thread groove and the fourth thread groove are all the same.

[0011] Preferably, the thread direction of the fifth thread groove is opposite to that of the first thread groove, the second thread groove, the third thread groove and the fourth thread groove.

[0012] Preferably, a rubber pad is fixedly connected to the right side of the circular plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In actual operation, the first thread groove, the second thread groove, the third thread groove and the fourth thread groove can be used to adapt to different types of double-head screws, thereby effectively improving the overall adaptability. The use of rubber pads can avoid hard contact and increase the service life of the tool. In addition, the use of circular plates can also avoid the loss of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a double-head screw assembly tool proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0017] Figure 3 A schematic diagram of the push screw.

[0018] In the figure: 1 hexagonal prism, 2 moving screw rod, 3 nut, 4 first thread groove, 5 second thread groove, 6 third thread groove, 7 fourth thread groove, 8 round plate, 9 rubber pad, 10 fifth thread groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 A double-head screw assembly tool comprises a hexagonal prism 1, a first thread groove 4 is provided on the right side of the hexagonal prism 1, a second thread groove 5 is provided on the left inner wall of the first thread groove 4, a third thread groove 6 is provided on the left inner wall of the second thread groove 5, a fourth thread groove 7 is provided on the left inner wall of the third thread groove 6, a fifth thread groove 10 is provided through the left inner wall of the fourth thread groove 7, and the inner diameters of the first thread groove 4, the second thread groove 5, the third thread groove 6 and the fourth thread groove 7 are reduced in sequence;

[0021] Among them, it also includes a reverse limiting mechanism, which includes a moving screw 2 that penetrates the fifth thread groove 10, a nut 3 is fixedly connected to the left end of the moving screw 2, and the right end of the moving screw 2 extends into the fourth thread groove 7. The thread directions of the first thread groove 4, the second thread groove 5, the third thread groove 6 and the fourth thread groove 7 are the same, and the thread direction of the fifth thread groove 10 is opposite to that of the first thread groove 4, the second thread groove 5, the third thread groove 6 and the fourth thread groove 7;

[0022] The right end of the moving screw rod 2 is fixedly connected with a circular plate 8 , the outer diameter of the circular plate 8 is larger than the inner diameter of the fifth thread groove 10 , and the right side of the circular plate 8 is fixedly connected with a rubber pad 9 .

[0023] In the utility model, when actually using, first insert the hexagonal prism 1 on the double-headed screw rod, let the double-headed screw rod, then rotate the hexagonal prism 1 forward, let the double-headed screw rod be screwed into the corresponding thread groove (one of the first thread groove 4, the second thread groove 5, the third thread groove 6 and the fourth thread groove 7), after being screwed in part, use a wrench to rotate the nut 3 in the opposite direction, so that the push screw rod 2 is screwed into the corresponding thread groove and abuts against the double-headed screw rod to complete the installation, then use the wrench to drive the hexagonal prism 1 to rotate, the other end of the double-headed screw rod can be screwed into the corresponding thread groove, and one end of the double-headed screw rod is installed, then the push screw rod 2 is twisted forward, and finally the hexagonal prism 1 is twisted in the opposite direction to remove the tooling.

[0024] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A double-head screw assembly tool, It is characterized in that include: A hexagonal prism (1), wherein a first thread groove (4) is provided on the right side of the hexagonal prism (1), a second thread groove (5) is provided on the left inner wall of the first thread groove (4), a third thread groove (6) is provided on the left inner wall of the second thread groove (5), a fourth thread groove (7) is provided on the left inner wall of the third thread groove (6), and a fifth thread groove (10) is provided through the left inner wall of the fourth thread groove (7); A reverse limiting mechanism, the reverse limiting mechanism comprising a retaining screw (2) penetrating the fifth thread groove (10), the left end of the retaining screw (2) being fixedly connected to a nut (3), and the right end of the retaining screw (2) extending into the fourth thread groove (7).

2. A double-head screw assembly tool according to claim 1, It is characterized in that The inner diameters of the first thread groove (4), the second thread groove (5), the third thread groove (6) and the fourth thread groove (7) decrease in sequence.

3. A double-head screw assembly tool according to claim 1, It is characterized in that The right end of the abutting screw rod (2) is fixedly connected to a circular plate (8), and the outer diameter of the circular plate (8) is greater than the inner diameter of the fifth thread groove (10).

4. A double-head screw assembly tool according to claim 1, It is characterized in that The thread directions of the first thread groove (4), the second thread groove (5), the third thread groove (6) and the fourth thread groove (7) are all the same.

5. A double-head screw assembly tool according to claim 4, It is characterized in that The thread direction of the fifth thread groove (10) is opposite to that of the first thread groove (4), the second thread groove (5), the third thread groove (6) and the fourth thread groove (7).

6. A double-head screw assembly tool according to claim 3, It is characterized in that A rubber pad (9) is fixedly connected to the right side of the circular plate (8).

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