Lock bolt piece structure

Abstract

The utility model discloses a lock bolt piece structure which comprises a bolt end portion and a bolt rod portion, a gasket is further arranged at the lower end of the bolt end portion, an inner concave portion is arranged on the outer side of the bolt rod portion, a fixing plate is arranged on the inner ring of the gasket and comprises a horizontal portion and a vertical portion, and the vertical portion of the fixing plate is filled in the inner concave portion. The outer side wall of the vertical portion of the fixing plate is flush with the outer side of the rod portion of the bolt, the upper end face of the end portion of the bolt is further downwards provided with a T-shaped fixing groove, a penetrating groove is formed between the inwards-concave portion and the fixing groove, an adjusting block is arranged in the penetrating groove, a cylindrical positioning plate is inserted into the fixing groove, the lower end of the positioning plate is connected with an auxiliary plate, and a protruding portion is arranged on the auxiliary plate. And a limiting piece is arranged in the positioning plate, and the upper end of the limiting piece is in threaded connection with the groove wall of the upper portion of the fixing groove. The gasket and the fixing plate are arranged, the contact area of the gasket and a fastened object is increased, and then the connection stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an anti-loosening bolt component structure. Background Art

[0002] Existing bolts tend to loosen when used under vibration conditions. In order to improve the anti-loosening performance of the bolts, most of the existing technologies adopt the form of adding gaskets to increase the contact area between the bolts and the fastened objects, so as to improve the connection and fastening effect between the bolts and the fastened objects. However, in conventional structures, the gaskets also directly contact the fastened objects, and the stabilizing effect between the two is reflected by the friction between the two. At the same time, the gaskets and the ends of the bolts are also in surface-to-surface friction contact, and the overall stabilizing effect has room for improvement. Utility Model Content

[0003] The utility model aims to provide a bolt structure which increases the limit contact and improves the anti-loosening effect in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an anti-loosening bolt structure, which adopts the following technical solutions:

[0005] The bolt has a plurality of holes arranged on the top of the bolt and the bottom of the bolt has a plurality of holes arranged on the top of the bolt. The holes are located at the bottom of the bolt and the top of the bolt is pressed against the flange of the fixing plate. The fixing plate has a plurality of holes arranged on the bottom of the bolt and a plurality of holes are pressed against the flange of the fixing plate.

[0006] A further improvement of the anti-loosening bolt structure of the utility model is that an end groove for the upper end portion of the gasket to be embedded is provided on the lower end surface of the bolt end, and the end groove is matched with the upper end portion of the gasket.

[0007] A further improvement of the anti-loosening bolt structure of the utility model is that a horizontal second through groove is provided on the vertical part of the fixing plate, the cross-section of the second through groove is smaller than the through groove, the cross-section of the adjustment block is T-shaped, and one end of the adjustment block passes through the second through groove.

[0008] A further improvement of the anti-loosening bolt structure of the utility model is that four groups of through grooves, second through grooves and auxiliary plates are arranged evenly.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model provides a gasket and a fixing plate to increase the contact area between the gasket and the fastened object, thereby improving the connection stability. At the same time, a positioning plate and an auxiliary plate are arranged inside the bolt to limit the bolt and the fastened object, the bolt and the gasket, further improving the connection stability performance of the bolt relative to the fastened object. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] In the figure: 1 bolt end, 2 bolt rod, 3 gasket, 4 recessed part, 5 vertical part, 6 fixing groove, 7 positioning plate, 8 limiter, 9 through groove, 10 second through groove, 11 auxiliary plate, 12 protrusion. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, a structure of an anti-loosening bolt component includes a bolt end 1 and a bolt shank 2. A gasket 3 is also provided at the lower end of the bolt end. The gasket is a spiral gasket with a certain plasticity. The bolt shank passes through the gasket. An inner concave portion 4 is provided on the outer side of the bolt shank. The inner concave portion is located at one end of the bolt shank close to the bolt end. A fixing plate is provided on the inner circle of the gasket. The fixing plate includes a horizontal portion and a vertical portion 5. The horizontal portion is connected to the inner circle of the gasket. The connection method can be welding. The vertical portion of the fixing plate is filled in the inner concave portion. The outer side wall of the vertical portion of the fixing plate is flush with the outer side of the bolt shank. The vertical portion is a cylindrical structure. A T-shaped fixing groove 6 is also provided downward on the upper end face of the bolt end, the bottom of the fixing groove is lower than the inner recess, a through groove 9 is provided between the inner recess and the fixing groove, an adjusting block is provided in the through groove, a cylindrical positioning plate 7 is inserted in the fixing groove, an auxiliary plate 11 is connected to the lower end of the positioning plate, the auxiliary plate has a certain plasticity relative to the positioning plate, so that the protruding part can partially penetrate into the positioning plate, a protruding part 12 is provided on the auxiliary plate, the protruding part extends into the through groove to resist the adjusting block, a limiting member 8 is provided in the positioning plate, and the upper end of the limiting member is screwed to the upper groove wall of the fixing groove.

[0015] Furthermore, the lower end surface of the bolt end is provided with an end groove (not shown in the figure) for the upper end portion of the gasket to be embedded, and the end groove is adapted to the upper end portion of the gasket, so as to further limit the bolt and the gasket and improve the contact stability between the two.

[0016] Furthermore, a second horizontal through slot 10 is provided on the vertical portion of the fixing plate, the cross section of the second through slot is smaller than the through slot, the cross section of the adjusting block is T-shaped, and one end of the adjusting block passes through the second through slot. The adjusting block is limited by the protruding portion to press against the fixing plate and the fastened object, thereby improving the stability and anti-loosening performance of the bolt connection.

[0017] There are four groups of through slots, second through slots and auxiliary plates, which are evenly arranged.

[0018] The working principle of the utility model is as follows: the threaded hole on the fastened object is connected by bolts, and after the bolts are screwed into place, the vertical part of the fixing plate contacts the hole wall of the threaded hole, and at the same time, the gasket, the end of the bolt and the fastened object are relatively fixed, and then the positioning plate is inserted so that the protrusion abuts against the pre-arranged adjustment block, and the adjustment block abuts against the vertical part of the fixing plate and the threaded hole of the fastened object, and then the limiting piece is fixed so that the auxiliary plate is stably connected with respect to the bolt, and the abutment stability of the adjustment block is indirectly realized. On the whole, the contact area between the gasket and the fastened object is increased, and the anti-loosening performance between the bolt and the fastened object is improved.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bolt structure for preventing loosening, comprising a bolt end and a bolt shank, characterized in that: The bolt end is also provided with a gasket at the lower end of the bolt end, and the gasket is a spiral gasket, and the bolt rod passes through the gasket, and the outer side of the bolt rod is provided with an inner recess, and the inner recess is located at one end of the bolt rod near the bolt end. A fixing plate is provided in the inner circle of the gasket, and the fixing plate includes a horizontal portion and a vertical portion, and the vertical portion of the fixing plate fills the inner recess, and the outer side wall of the vertical portion of the fixing plate is flush with the outer side of the bolt rod. The upper end surface of the bolt end is also provided with a T-shaped fixing groove downward, and the bottom of the fixing groove is lower than the inner recess, and a through groove is provided between the inner recess and the fixing groove, and an adjusting block is provided in the through groove, and a cylindrical positioning plate is inserted in the fixing groove, and the lower end of the positioning plate is connected to the auxiliary plate, and a protrusion is provided on the auxiliary plate, and the protrusion extends into the through groove to resist the adjusting block. A limiting member is provided in the positioning plate, and the upper end of the limiting member is screwed with the upper groove wall of the fixing groove.

2. The anti-loosening bolt structure according to claim 1, characterized in that: The lower end surface of the bolt end is provided with an end groove for the upper end portion of the gasket to be embedded, and the end groove is adapted to the upper end portion of the gasket.

3. The anti-loosening bolt structure according to claim 2, characterized in that: A second horizontal through slot is disposed on the vertical portion of the fixing plate, the second through slot has a cross section smaller than the through slot, the adjustment block has a T-shaped cross section, and one end of the adjustment block passes through the second through slot.

4. The anti-loosening bolt structure according to claim 3, characterized in that: The through slots, the second through slots and the auxiliary plates are provided in four groups and are evenly arranged.

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