Torsional shear type bolt

Abstract

The utility model discloses a torsional shear type bolt which comprises a screw rod, a screw head, a nut and a gasket, a deburring piece is arranged on the side, facing the screw head, of the gasket, a protruding deburring scraping strip is arranged on the side face, facing the screw head, of the deburring piece, a U-shaped groove is formed in the deburring piece, the arc bottom of the U-shaped groove extends to the center, and the bottom of the U-shaped groove extends to the center. A plurality of driving blocks are arranged on the side edge of the deburring piece, the outer diameter of the deburring piece is larger than that of the gasket, the width of the U-shaped groove is larger than the thread outer diameter of the screw rod, the deburring operation on the surface of a connecting piece can be conducted through the deburring piece under the condition that the bolt is not disassembled, and the precision and the connecting effect during bolt assembling and connecting are guaranteed. And the connection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and more specifically relates to a torsion shear type bolt capable of removing burrs, which improves the assembly precision between the bolt and a connecting piece and improves the assembly efficiency. Background Art

[0002] Torsion shear bolts are generally components, with a screw head and a plum head at both ends of the screw, as well as a gasket mounted on the screw and a nut threaded on the screw. During construction, the screw passes through the connecting piece, the gasket is put on, the nut is connected, and a special tightening tool is used to tighten the nut. The screw is fixed by the plum head, and the plum head is twisted off after tightening, thereby ensuring that the connection torque meets the requirements.

[0003] The holes on the connectors are drilled in advance, and after drilling, it is generally necessary to remove the burrs on the edges of the holes so that the screw heads and gaskets can fit smoothly on the surface of the connectors to improve the accuracy and strength of the connection. Therefore, after drilling holes in the connectors, a deburring process is required, and the bolts cannot be directly connected, which is inefficient. If the burrs are not completely removed when connecting the bolts, the bolts need to be removed and deburred again, resulting in reduced bolt connection efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a torsion shear type bolt.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a torsion shear type bolt, comprising a screw, a screw head, a nut and a gasket, wherein a deburring sheet is arranged on the side of the gasket facing the screw head, a protruding deburring scraper is arranged on the side of the deburring sheet facing the screw head, a U-shaped groove is arranged on the deburring sheet, and the arc bottom of the U-shaped groove extends to the center, a plurality of driving blocks are arranged on the side of the deburring sheet, the outer diameter of the deburring sheet is larger than the gasket, and the width of the U-shaped groove is larger than the outer diameter of the thread of the screw.

[0006] Furthermore, the tightening tool for tightening the bolt includes an outer cylinder, which is connected to a driving device, and a driving groove corresponding to the driving block is provided on the inner wall of the opening of the outer cylinder, and the matching depth between the driving groove and the driving block is less than or equal to the thickness of the driving block.

[0007] Furthermore, the deburring scraper strips include a plurality of arc-shaped scraper strips, and the convex side of the arc-shaped scraper strips is the rotation direction of the deburring sheet.

[0008] Furthermore, the deburring scraper is a continuous planar spiral scraper, one end of which is close to the center of the deburring sheet, the other end is far away from the center of the deburring sheet, and the two ends are respectively located on both sides of the U-shaped groove.

[0009] Furthermore, the cross-section of the deburring scraper strip is triangular.

[0010] Compared with the prior art, the beneficial effect of the utility model is as follows: before tightening the nut, the deburring sheet is clamped on the screw between the gasket and the connecting piece through the U-shaped groove, and then the outer cylinder on the tightening tool is aligned with the deburring sheet, and the driving block on the deburring sheet is clamped into the driving groove of the outer cylinder. After the outer cylinder rotates, the deburring scraper on the deburring sheet is driven to remove the burrs around the hole of the connecting piece. After removal, the outer cylinder and the deburring sheet are separated, and the deburring sheet is removed from the screw to re-tighten the nut, thereby realizing the deburring operation on the surface of the connecting piece without disassembling the bolt, ensuring the accuracy and connection effect of the bolt assembly connection, and improving the connection efficiency at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the torsion shear bolt of the utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of the structure in the middle AA direction;

[0013] Figure 3 It is a structural schematic diagram of a deburring scraper on a deburring sheet in a torsion shear type bolt of the utility model;

[0014] Figure 4 It is a structural schematic diagram of a deburring scraper on another deburring sheet in the torsion shear type bolt of the utility model;

[0015] Figure 5 is a schematic diagram of the internal structure of the tightening tool;

[0016] Figure 6 Two cross-sectional schematic diagrams of the deburring scraper in the torsion shear type bolt of the utility model.

[0017] Reference numerals: screw 1; screw head 2; nut 3; gasket 4; deburring sheet 5; U-shaped groove 6; driving block 7; outer cylinder 8; driving groove 9; arc scraper 10; flat spiral scraper 11; nut sleeve 12; plum blossom sleeve 13. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0020] Reference Figures 1 to 6 The utility model is further described.

[0021] A torsion shear bolt comprises a screw rod 1, a screw head 2, a nut 3 and a gasket 4, wherein a deburring sheet 5 is arranged on the side of the gasket 4 facing the screw head 2, a protruding deburring scraper is arranged on the side of the deburring sheet 5 facing the screw head 2, a U-shaped groove 6 is arranged on the deburring sheet 5, and the arc bottom of the U-shaped groove 6 extends to the center, a plurality of driving blocks 7 are arranged on the side of the deburring sheet 5, the outer diameter of the deburring sheet 5 is larger than the gasket 4, and the width of the U-shaped groove 6 is larger than the outer diameter of the thread of the screw rod 1.

[0022] like Figure 5 As shown, in this embodiment, preferably, the tightening tool for tightening the bolt includes an outer cylinder 8, the outer cylinder 8 is connected to a driving device, a driving groove 9 corresponding to the driving block 7 is provided on the inner wall of the opening of the outer cylinder 8, and the matching depth between the driving groove 9 and the driving block 7 is less than or equal to the thickness of the driving block 7.

[0023] like Figure 5 As shown, the outer cylinder 8 of the tightening tool is provided with 3 sets of nuts and a plum blossom sleeve 13 driven by motors respectively. The outer cylinder 8, 3 sets of nuts and the plum blossom sleeve 13 are reduced in sequence. When the bolts are connected normally, the outer cylinder 8 does not participate in the tightening. The 3 sets of nuts are sleeved on the nut 3, and the plum blossom sleeve 13 is sleeved on the plum blossom head. When deburring, the outer cylinder 8 is driven by the connected driving device, which can be a small reduction motor.

[0024] In addition, the common tightening tool structure can refer to the existing patents of torsion shear wrenches, such as an automatic dual-speed torque torsion shear multi-purpose wrench with publication number CN114227596A.

[0025] Working principle: after the bolt passes through the hole on the connecting piece, the gasket 4 and the threaded connection nut 3 are sequentially sleeved on the passed part of the screw rod 1, and then the tightening tool is used to tighten the nut 3. If a large gap is found between the gasket 4 and the connecting piece at this time, the nut 3 is loosened at this time to leave a space between the gasket 4 and the connecting piece, and then the deburring sheet 5 is clamped on the screw rod 1 between the gasket 4 and the connecting piece through the U-shaped groove 6, and then the outer cylinder 8 on the tightening tool is aligned with the deburring sheet 5, and the driving block 7 on the deburring sheet 5 is clamped into the driving groove 9 of the outer cylinder 8. After driving the outer cylinder 8 alone, the deburring sheet 5 is driven to contact the surface of the connecting surface, and the burrs around the hole of the connecting piece are removed by the deburring scraper. After removal, the outer cylinder 8 is separated from the deburring sheet 5, and finally the deburring sheet 5 is removed from the screw rod 1 and the nut 3 can be tightened again.

[0026] The deburring operation on the surface of the connecting parts can be carried out without removing the bolts, thereby ensuring the accuracy and connection effect of the bolt assembly connection and improving the connection efficiency.

[0027] like Figure 3 As shown, in the present embodiment, preferably, the deburring scraper includes a plurality of arc-shaped scraper strips 10, and the convex side of the arc-shaped scraper strip 10 is in the rotation direction of the deburring sheet 5, that is, when the deburring sheet 5 rotates, the concave side of the arc-shaped scraper strip 10 contacts the burrs and is scraped off by the arc-shaped scraper strip 10 as the deburring sheet 5 rotates.

[0028] At the same time, due to the curvature of the arc-shaped scraper strip 10 , the scraped burrs can be discharged along the arc-shaped scraper strip 10 out of the area between the burr sheet and the connecting piece.

[0029] like Figure 6 As shown, in this embodiment, preferably, the cross-section of the deburring scraper strip is a triangle, including an equilateral triangle and a right triangle, and when it is a right triangle, the direction of its hypotenuse is the same as the rotation direction of the deburring sheet 5.

[0030] Embodiment 2:

[0031] A torsion shear bolt comprises a screw rod 1, a screw head 2, a nut 3 and a gasket 4, wherein a deburring sheet 5 is arranged on the side of the gasket 4 facing the screw head 2, a protruding deburring scraper is arranged on the side of the deburring sheet 5 facing the screw head 2, a U-shaped groove 6 is arranged on the deburring sheet 5, and the arc bottom of the U-shaped groove 6 extends to the center, a plurality of driving blocks 7 are arranged on the side of the deburring sheet 5, the outer diameter of the deburring sheet 5 is larger than the gasket 4, and the width of the U-shaped groove 6 is larger than the outer diameter of the thread of the screw rod 1.

[0032] like Figure 5 As shown, in this embodiment, preferably, the tightening tool for tightening the bolt includes an outer cylinder 8, the outer cylinder 8 is connected to a driving device, a driving groove 9 corresponding to the driving block 7 is provided on the inner wall of the opening of the outer cylinder 8, and the matching depth between the driving groove 9 and the driving block 7 is less than or equal to the thickness of the driving block 7.

[0033] like Figure 4 As shown, in the present embodiment, preferably, the deburring scraper is a continuous planar spiral scraper 11, one end of the planar spiral scraper 11 is close to the center of the deburring sheet 5, and the other end is far away from the center of the deburring sheet 5, and the two ends are respectively located on both sides of the U-shaped groove 6, and the burrs are scraped off by the planar spiral scraper 11.

[0034] like Figure 6 As shown, in this embodiment, preferably, the cross-section of the deburring scraper is triangular.

[0035] The other technical features in this example are the same as those in Example 1.

[0036] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A torsion shear bolt, comprising a screw rod, a screw head, a nut and a washer, characterized in that: A deburring sheet is provided on the side of the gasket facing the screw head, a protruding deburring scraper is provided on the side of the deburring sheet facing the screw head, a U-shaped groove is provided on the deburring sheet, and the arc bottom of the U-shaped groove extends to the center, a plurality of driving blocks are provided on the side of the deburring sheet, the outer diameter of the deburring sheet is larger than the gasket, and the width of the U-shaped groove is larger than the outer diameter of the thread of the screw.

2. The torsion shear bolt according to claim 1, characterized in that: The tightening tool for tightening the bolt includes an outer cylinder, the outer cylinder is connected to a driving device, a driving groove corresponding to the driving block is arranged on the inner wall of the opening of the outer cylinder, and the matching depth between the driving groove and the driving block is less than or equal to the thickness of the driving block.

3. The torsion shear bolt according to claim 1, characterized in that: The deburring scraper strips include a plurality of arc-shaped scraper strips, and the convex side of the arc-shaped scraper strips is the rotation direction of the deburring sheet.

4. The torsion shear bolt according to claim 1, characterized in that: The deburring scraper is a continuous planar spiral scraper, one end of which is close to the center of the deburring sheet, the other end is far away from the center of the deburring sheet, and the two ends are respectively located on both sides of the U-shaped groove.

5. The torsion shear bolt according to any one of claims 1 to 4, characterized in that: The cross section of the deburring scraper strip is triangular.

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