Stud bolt quick tightening mechanism

Abstract

The utility model discloses a stud bolt quick tightening mechanism which comprises a first shell and a stud bolt body, one end of the first shell is fixedly connected with a second shell, an annular groove is formed in the first shell, a gear ring is installed in the annular groove, a plurality of moving grooves are formed in the inner wall of the annular groove, and the moving grooves are fixedly connected with the second shell. A rotating shaft is rotationally connected between the inner walls of the two sides of each moving groove, a gear is fixedly connected to the outer wall of each rotating shaft, each gear is meshed with the corresponding gear ring, a guide rod is fixedly connected to the inner wall of each moving groove, a rack is arranged on the outer wall of each guide rod in a penetrating mode, and the rack is fixedly connected to the outer wall of each moving groove. And each rack is engaged with the corresponding gear, and the lower end of each rack is fixedly connected with a connecting block. And structures such as a gear ring, a gear and a rack are arranged, stud bodies of different specifications can be clamped and fixed by adjusting the moving distance of a clamping plate, and then the stud bodies can be conveniently and rapidly tightened.

Description

Technical Field

[0001] The utility model relates to the technical field of stud bolts, in particular to a quick tightening mechanism for stud bolts. Background Art

[0002] Stud bolts, also called double-ended screws or double-ended studs, are used to connect mechanical fixed links. Stud bolts have threads on both ends, and the middle screw can be thick or thin. They are generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, large-span steel structures and large buildings.

[0003] However, when using automatic bolt tightening equipment to tighten stud bolts, the matching screw head specification is single and can only be applied to bolts of a single specification. When tightening bolts of different specifications, it is necessary to use disassembly tools to replace different screw heads. This operation is cumbersome, time-consuming and laborious. Therefore, how to solve this problem is what we need to consider. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a stud bolt quick tightening mechanism, which is provided with a gear ring, a gear and a rack and other structures. By adjusting the moving distance of the clamping plate, stud bolt bodies of different specifications can be clamped and fixed, thereby facilitating the quick tightening of the stud bolt body.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The double-headed bolt quick tightening mechanism includes a first shell and a double-headed bolt body, one end of the first shell is fixedly connected to the second shell, an annular groove is opened inside the first shell, a gear ring is installed in the annular groove, and a plurality of movable grooves are opened on the inner wall of the annular groove, and a rotating shaft is rotatably connected between the inner walls on both sides of each movable groove, and the outer wall of each rotating shaft is fixedly connected to a gear, and each gear is meshed with the gear ring, and the inner wall of each movable groove is fixedly connected to a guide rod, and the outer wall of each guide rod is penetrated by a rack, and each rack is meshed with the corresponding gear, and the lower end of each rack is fixedly connected to a connecting block, and the side wall of each connecting block is fixedly connected to a clamping plate, and each clamping plate cooperates with the double-headed bolt body.

[0007] Preferably, one end of one of the rotating shafts passes through the first shell and extends to the outside, and one end of one of the rotating shafts located at the outside is fixedly connected to the first knob.

[0008] Preferably, each of the clamping plates is arc-shaped, and a side wall of each of the clamping plates is provided with a rubber layer.

[0009] Preferably, a slide groove is provided in the second shell, a bidirectional threaded rod is rotatably connected between the inner walls on both sides of the slide groove, both threaded ends of the bidirectional threaded rod are threadedly connected to sliders, and the upper ends of the two sliders are fixedly connected to an arc plate.

[0010] Preferably, the two arc-shaped plates are both slidably connected to the inner wall of the second shell, and rubber layers are provided on opposite sides of the two arc-shaped plates.

[0011] Preferably, one end of the bidirectional threaded rod passes through the second shell and extends to the outside, and the end of the bidirectional threaded rod located at the outside is fixedly connected to the second knob.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. A gear ring, gear, and rack structure are provided. Multiple racks are moved to move multiple clamping plates. By adjusting the moving distance of multiple clamping plates, multiple clamping plates can clamp stud bolts of different specifications. In this way, the stud bolts can be tightened quickly, further improving work efficiency.

[0014] 2. A bidirectional threaded rod, a slider, an arc-shaped plate and other structures are set up. By rotating the bidirectional threaded rod, the two sliders are moved relative to each other, and then the two arc-shaped plates are moved relative to each other to clamp and fix the automatic bolt tightening equipment. In this way, the removal and installation of the automatic bolt tightening equipment are convenient and simple, and the maintenance and inspection of the automatic bolt tightening equipment are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the stud bolt quick tightening mechanism proposed by the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the upper end section;

[0017] Figure 3 for Figure 2 A magnified view of point A;

[0018] Figure 4 for Figure 1 Schematic diagram of the rear side section;

[0019] Figure 5 for Figure 4 Enlarged view of point B;

[0020] Figure 6 for Figure 4 Enlarged view of point C;

[0021] Figure 7 for Figure 1 Schematic top view of

[0022] Figure 8 for Figure 1 Schematic diagram of the top view.

[0023] In the figure: 1 first housing, 2 stud bolt body, 3 second housing, 4 annular groove, 5 gear ring, 6 moving groove, 7 rotating shaft, 8 gear, 9 guide rod, 10 rack, 11 first knob, 12 connecting block, 13 clamping plate, 14 slide groove, 15 bidirectional threaded rod, 16 slider, 17 arc plate, 18 second knob. DETAILED DESCRIPTION

[0024] 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 the embodiments.

[0025] Reference Figures 1-8 , a stud bolt quick tightening mechanism includes a first shell 1 and a stud bolt body 2. The first shell 1 is cylindrical, one end of the stud bolt body 2 is located inside the first shell 1, and one end of the first shell 1 is fixedly connected to the second shell 3, which is also cylindrical. The second shell 3 is used to install an automatic bolt tightening device. The automatic bolt tightening device can use a pneumatic wrench to reduce the labor intensity during operation. The pneumatic wrench is a prior art and is not described here. An annular groove 4 is provided inside the first shell 1, and a gear ring 5 is installed in the annular groove 4. A plurality of movable grooves 6 are provided on the inner wall of the annular groove 4, each movable groove 6 consists of a rectangular groove and a cylindrical groove, and a rotating shaft 7 is rotatably connected between the inner walls on both sides of each movable groove 6. The outer wall of each rotating shaft 7 is fixedly connected to a gear 8, and each gear 8 is engaged with the gear ring 5;

[0026] Among them, the inner wall of each movable groove 6 is fixedly connected to a guide rod 9, and the outer wall of each guide rod 9 is penetrated by a rack 10, each rack 10 can slide on the corresponding guide rod 9, and each rack 10 is meshed with the corresponding gear 8. One end of one of the rotating shafts 7 passes through the first shell 1 and extends to the outside, and one end of one of the rotating shafts 7 located at the outside is fixedly connected to the first knob 11, and the lower end of each rack 10 is fixedly connected to a connecting block 12, and the side wall of each connecting block 12 is fixedly connected to a clamping plate 13, and each clamping plate 13 cooperates with the stud bolt body 2, and each clamping plate 13 is arc-shaped, and one side wall of each clamping plate 13 is provided with a rubber layer. By moving multiple racks 10, the corresponding clamping plate 13 is moved to limit and fix the stud bolt body 2. In this way, by adjusting the moving distance of the clamping plate 13, stud bolt bodies 2 of different specifications can be limited and fixed;

[0027] Among them, the pneumatic wrench then drives the stud bolt body 2 to move synchronously, quickly tightening the stud bolt body 2 into the corresponding threaded hole, greatly improving work efficiency, and by reversing the first knob 11, the multiple clamping plates 13 return to their original position, and the entire tightening mechanism can be quickly removed from the stud bolt body 2. A slide groove 14 is provided in the second shell 3, and a two-way threaded rod 15 is rotatably connected between the inner walls on both sides of the slide groove 14. The two threaded ends of the two-way threaded rod 15 are threadedly connected to sliders 16, and the upper ends of the two sliders 16 are fixedly connected to an arc plate 17. The two arc plates 17 are slidably connected to the inner wall of the second shell 3, and the opposite sides of the two arc plates 17 are provided with a rubber layer. One end of the two-way threaded rod 15 passes through the second shell 3 and extends to the outside. The end of the two-way threaded rod 15 located at the outside is fixedly connected to the second knob 18, and the pneumatic wrench is clamped and fixed by the two arc plates 17. In this way, the removal and installation of the pneumatic wrench are convenient and simple, and the pneumatic wrench can be removed for maintenance and inspection.

[0028] In the present invention, when in use, the mounting end of the pneumatic wrench is first inserted into the second housing 3, and then the second knob 18 is rotated to rotate the bidirectional threaded rod 15. The rotation of the bidirectional threaded rod 15 causes the two sliders 16 to move relative to each other, thereby causing the two curved plates 17 to move relative to each other until the two curved plates 17 stably clamp the mounting end of the pneumatic wrench. In this way, the installation of the pneumatic wrench is completed, and the second knob 18 is rotated in the opposite direction to move the two curved plates 17 away from each other, thereby releasing the limit of the pneumatic wrench. In this way, the removal and installation of the pneumatic wrench are convenient and simple, and the pneumatic wrench can be easily removed for maintenance and inspection.

[0029] Then, insert one end of the stud bolt body 2 into the first shell 1, and then turn the first knob 11 to rotate the corresponding gear 8, which in turn rotates the gear ring 5 engaged therewith, and the rotation of the gear ring 5 will cause the other gears 8 engaged therewith to rotate. In this way, multiple gears 8 rotate, causing multiple racks 10 engaged therewith to move, and multiple racks 10 will move with the corresponding clamping plates 13 through the corresponding connecting blocks 12 until multiple clamping plates 13 clamp one end of the stud bolt body 2. In this way, the moving distance of the rack 10 can be adjusted and the distance of the clamping plates 13 can be adjusted, so that stud bolt bodies 2 of different specifications can be clamped. Then, the pneumatic wrench can be used to drive the clamping assembly of the stud bolt body 2 to move synchronously, and the stud bolt body 2 can be quickly tightened into the corresponding threaded hole, which greatly improves work efficiency. Reverse the first knob 11 to make the multiple clamping plates 13 return to their original position, and the entire mechanism can be removed from the stud bolt body 2.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stud bolt quick tightening mechanism, comprising a first housing (1) and a stud bolt body (2), characterized in that: One end of the first shell (1) is fixedly connected to the second shell (3); an annular groove (4) is provided inside the first shell (1); a gear ring (5) is installed in the annular groove (4); a plurality of movable grooves (6) are provided on the inner wall of the annular groove (4); a rotating shaft (7) is rotatably connected between the inner walls of both sides of each movable groove (6); a gear (8) is fixedly connected to the outer wall of each rotating shaft (7); and each gear (8) is meshed with the gear ring (5); The inner wall of each movable groove (6) is fixedly connected to a guide rod (9), the outer wall of each guide rod (9) is penetrated by a rack (10), each rack (10) is engaged with a corresponding gear (8), the lower end of each rack (10) is fixedly connected to a connecting block (12), the side wall of each connecting block (12) is fixedly connected to a clamping plate (13), and each clamping plate (13) cooperates with the stud bolt body (2).

2. The stud bolt quick tightening mechanism according to claim 1, characterized in that: One end of one of the rotating shafts (7) passes through the first housing (1) and extends to the outside, and one end of one of the rotating shafts (7) located at the outside is fixedly connected to a first knob (11).

3. The stud bolt quick tightening mechanism according to claim 1, characterized in that: Each of the clamping plates (13) is arc-shaped, and a side wall of each of the clamping plates (13) is provided with a rubber layer.

4. The stud bolt quick tightening mechanism according to claim 1, characterized in that: A sliding groove (14) is provided in the second shell (3), and a bidirectional threaded rod (15) is rotatably connected between the inner walls on both sides of the sliding groove (14). Both threaded ends of the bidirectional threaded rod (15) are threadedly connected to sliders (16), and the upper ends of the two sliders (16) are fixedly connected to arc plates (17).

5. The stud bolt quick tightening mechanism according to claim 4, characterized in that: The two arc-shaped plates (17) are both slidably connected to the inner wall of the second shell (3), and rubber layers are provided on opposite sides of the two arc-shaped plates (17).

6. The stud bolt quick tightening mechanism according to claim 4, characterized in that: One end of the bidirectional threaded rod (15) passes through the second housing (3) and extends to the outside, and the end of the bidirectional threaded rod (15) located at the outside is fixedly connected to a second knob (18).

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