Novel anti-loosening bolt connection pair

Abstract

The utility model discloses a novel anti-loosening bolt connection pair which comprises a bolt, the outer wall of the bolt is in sliding connection with a fixing plate and a mounting plate, the outer wall of the bolt is in threaded connection with a nut, and the outer wall of the bolt is provided with a groove; the utility model relates to the technical field of bolt looseness prevention. According to the bolt and the nut, through the cooperation of the wedge block, the annular groove and the groove, when the nut is screwed down, the wedge block generates outward extrusion force to open the groove of the bolt and abut against the nut, the friction force between the nut and the bolt is greatly increased, the nut is effectively prevented from loosening, meanwhile, the spring washer and the anti-skid washer are matched with each other, and after the nut is screwed down, the anti-skid effect is good. The friction force between the nut and a bolt thread is continuously kept, the bolt can be prevented from being loosened due to external contact or collision through the combination of the positioning gasket, the spring piece, the positioning block and the protective cover, and multiple insurance is achieved in cooperation with the nut.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt anti-loosening technical field, specifically is a new type anti-loosening bolt coupling pair. BACKGROUND

[0002] In mechanical engineering, construction engineering and various equipment manufacturing and many other fields, the bolt coupling pair as a commonly used connecting piece, its performance is directly related to the stability and safety of the whole structure or equipment, the traditional bolt coupling pair has some deficiencies in the actual use process.

[0003] The ordinary bolt and nut combination only relies on the friction between the threads to maintain the connection, when subjected to vibration, impact, temperature change and other external forces, the friction between the threads is easy to decrease, and the nut is prone to loosening, some anti-loosening bolt coupling pairs adopt spring washers, stop washers and other measures to increase the anti-loosening effect, but the elasticity of the spring washer may decrease after long-term use, resulting in weakened anti-loosening ability, once the nut loosens, not only will it cause the loosening of the connecting part, affect the normal operation of the equipment, and in severe cases, it may also cause safety accidents. SUMMARY

[0004] (I) technical problems solved

[0005] In view of the deficiencies of the prior art, the utility model provides a new type anti-loosening bolt coupling pair, which solves the problem of loosening of the bolt coupling pair in long-term use.

[0006] (II) technical scheme

[0007] In order to achieve the above purpose, the utility model realizes the following technical scheme:

[0008] A new type anti-loosening bolt coupling pair, comprising: a bolt, the outer wall of the bolt is slidably connected with a fixing plate and a mounting plate, the outer wall of the bolt is threadedly connected with a nut, and the outer wall of the bolt is provided with a groove; the outer wall of the bolt is slidably connected with a positioning washer, the outer wall of the top of the positioning washer is fixedly connected with spring sheets in a symmetrical manner, the outer wall of the spring sheet is fixedly connected with a positioning block, the outer wall of the positioning washer is slidably connected with a protective cover, and the outer wall of the protective cover is provided with a positioning hole.

[0009] Preferably, the inner wall of the positioning hole is slidably connected with the outer wall of the positioning block, the protective cover is arranged above the bolt, the protective cover slides downward along the positioning washer, the positioning block is clamped into the positioning hole under the elastic force of the spring sheet, so that the positioning washer, the protective cover and the bolt are relatively fixed, and the bolt is prevented from being loosened due to external contact or collision.

[0010] Preferably, the inner wall of the groove is slidingly connected with a wedge, the outer wall of the top of the wedge is symmetrically and fixedly connected with a support rod, the outer wall of the top of the support rod is fixedly connected with a sliding block, the outer wall of the bottom of the nut is provided with an annular groove, and the outer wall of the sliding block is slidingly connected with the inner wall of the annular groove.

[0011] Preferably, the outer wall of the bolt is slidingly connected with a spring washer and an antiskid washer, the outer wall of the bottom of the spring washer is in contact with the outer wall of the top of the nut, and the outer wall of the bottom of the antiskid washer is in contact with the outer wall of the top of the spring washer.

[0012] Preferably, the outer wall of the bottom of the mounting plate is in contact with the outer wall of the top of the antiskid washer, and the outer wall of the top of the fixing plate is in contact with the outer wall of the bottom of the positioning washer.

[0013] Preferably, the outer wall of the top of the mounting plate is in contact with the outer wall of the bottom of the fixing plate, the bolt is sequentially threaded through the fixing plate and the mounting plate, and then the nut is threadedly connected with the outer wall of the bolt, so that the fastening connection of components is realized.

[0014] (Three) beneficial effects

[0015] The utility model provides a novel anti-loose bolt coupling pair. Has the following beneficial effects:

[0016] (I), the nut, through the cooperation between the wedge and the annular groove and the groove, when the nut is tightened, the wedge generates an outward extrusion force to support the bolt groove position and resist the nut, greatly increases the friction between the nut and the bolt, effectively prevents the nut from loosening, and simultaneously, the spring washer and the antiskid washer cooperate with each other, continuously maintain the friction between the nut and the bolt thread after the nut is tightened, and further enhance the anti-loose effect.

[0017] (II), the bolt, through the combination of the positioning washer, the spring piece, the positioning block and the protective cover, can avoid the loosening of the bolt caused by external contact or collision, and realizes multiple insurance by cooperating with the nut, and ensures the stability and reliability of the connection. ACCURACY

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the spring washer of the utility model;

[0020] Figure 3 It is the structural schematic view of the bolt of the utility model;

[0021] Figure 4 It is the structural schematic view of the positioning washer of the utility model;

[0022] Figure 5 It is the structural schematic view of the anti-skid washer of the utility model;

[0023] Figure 6 It is the structural schematic view of the nut of the utility model.

[0024] In the drawing: 1, bolt; 2, fixed plate; 3, mounting plate; 10, recess; 11, positioning washer; 12, spring sheet; 13, positioning block; 14, protective cover; 15, positioning hole; 16, nut; 161, annular groove; 162, sliding block; 163, support rod; 164, wedge block; 17, spring washer; 18, anti-skid washer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-6 The utility model provides a technical scheme: a novel anti-loose bolt coupling pair, include: bolt 1, the outer wall of bolt 1 is slidably connected with fixed plate 2 and mounting plate 3, the outer wall of bolt 1 is threadedly connected with nut 16, the outer wall of bolt 1 is provided with recess 10;The outer wall of bolt 1 is slidably connected with positioning washer 11, the outer wall of the top of positioning washer 11 is fixedly connected with spring sheet 12 symmetrically, the outer wall of spring sheet 12 is fixedly connected with positioning block 13, the outer wall of positioning washer 11 is slidably connected with protective cover 14, the outer wall of protective cover 14 is provided with positioning hole 15.

[0027] The inner wall of positioning hole 15 is slidably connected with the outer wall of positioning block 13, protective cover 14 is arranged above bolt 1, protective cover 14 slides downward along positioning washer 11, positioning block 13 is clamped into positioning hole 15 under the elastic force of spring sheet 12, so that positioning washer 11, protective cover 14 and bolt 1 are relatively fixed, avoid that bolt 1 is contacted or collided by external, lead to bolt 1 loose.

[0028] The inner wall of the groove 10 is slidably connected with a wedge block 164, the outer wall of the top of the wedge block 164 is symmetrically and fixedly connected with a supporting rod 163, the outer wall of the top of the supporting rod 163 is fixedly connected with a sliding block 162, the outer wall of the bottom of the nut 16 is provided with an annular groove 161, the outer wall of the sliding block 162 is slidably connected with the inner wall of the annular groove 161, when the nut 16 is upwardly rotated and tightened, since the sliding block 162 slides in the annular groove 161 and is connected with the wedge block 164 through the supporting rod 163, the wedge block 164 is driven to move upwardly in the groove 10, the wedge block 164 generates an extruding force outwardly, the position of the groove 10 provided on the bolt 1 is expanded, and the nut 16 is pressed.

[0029] The outer wall of the bolt 1 is slidably connected with a spring washer 17 and an anti-skid washer 18, the outer wall of the bottom of the spring washer 17 is in contact with the outer wall of the top of the nut 16, the outer wall of the bottom of the anti-skid washer 18 is in contact with the outer wall of the top of the spring washer 17,

[0030] The outer wall of the bottom of the mounting plate 3 is in contact with the outer wall of the top of the anti-skid washer 18, the outer wall of the top of the fixed plate 2 is in contact with the outer wall of the bottom of the positioning washer 11, when the nut 16 is completely tightened, the anti-skid washer 18 and the spring washer 17 are in contact and extruded, and the friction force between the nut 16 and the bolt 1 is maintained.

[0031] The outer wall of the top of the mounting plate 3 is in contact with the outer wall of the bottom of the fixed plate 2, the bolt 1 is sequentially threaded through the fixed plate 2 and the mounting plate 3, then the nut 16 is threadedly connected with the outer wall of the bolt 1, and the fastening connection of the components is initially realized.

[0032] In use, the bolt 1 is sequentially threaded through the fixed plate 2 and the mounting plate 3, then the nut 16 is threadedly connected with the outer wall of the bolt 1, and the fastening connection of the components is initially realized.

[0033] Before the bolt 1 is threaded through the fixed plate 2, the positioning washer 11 is sleeved, then the fixed plate 2 and the mounting plate 3 are sequentially threaded, then the anti-skid washer 18 and the spring washer 17 are sequentially sleeved on the bolt 1, and finally the nut 16 is threadedly tightened along the outer wall of the bolt 1, when the nut 16 is upwardly rotated and tightened, since the sliding block 162 slides in the annular groove 161 and is connected with the wedge block 164 through the supporting rod 163, the wedge block 164 is driven to move upwardly in the groove 10, the wedge block 164 generates an extruding force outwardly, the position of the groove 10 provided on the bolt 1 is expanded, the nut 16 is pressed, the friction force between the nut 16 and the bolt 1 is increased, and the nut 16 is prevented from loosening;

[0034] When the nut 16 is fully tightened, the anti-skid washer 18 and the spring washer 17 are in contact and pressed, the friction between the nut 16 and the bolt 1 is maintained, at the same time, the protective cover 14 is slid down along the positioning washer 11, the positioning block 13 is clamped into the positioning hole 15 under the elastic force of the spring sheet 12, the positioning washer 11 and the protective cover 14 are fixed relative to the bolt 1, the bolt 1 is prevented from being loosened due to external contact or collision, and the auxiliary anti-loosening effect is achieved.

[0035] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new anti-loosening bolted joint pair comprising: Bolt (1), the outer wall of the bolt (1) is slidably connected with a fixing plate (2) and a mounting plate (3), the outer wall of the bolt (1) is threadedly connected with a nut (16), characterized in that the outer wall of the bolt (1) is provided with a groove (10); The outer wall of the bolt (1) is slidably connected with a positioning washer (11), the outer wall of the top of the positioning washer (11) is fixedly connected with spring sheets (12) in a symmetrical manner, the outer wall of the spring sheets (12) is fixedly connected with positioning blocks (13), the outer wall of the positioning washer (11) is slidably connected with a protective cover (14), and the outer wall of the protective cover (14) is provided with positioning holes (15).

2. A new anti-loosening bolt coupling pair according to claim 1, characterized in that: The inner wall of the positioning hole (15) is slidably connected with the outer wall of the positioning block (13), and the protective cover (14) is arranged above the bolt (1).

3. A new anti-loosening bolt coupling pair according to claim 1, characterized in that: The inner wall of the groove (10) is slidably connected with a wedge block (164), the outer wall of the top of the wedge block (164) is fixedly connected with support rods (163) in a symmetrical manner, the outer wall of the top of the support rod (163) is fixedly connected with a sliding block (162), the outer wall of the bottom of the nut (16) is provided with an annular groove (161), and the outer wall of the sliding block (162) is slidably connected with the inner wall of the annular groove (161).

4. A new anti-loosening bolt coupling pair according to claim 1, characterized in that: The outer wall of the bottom of the spring washer (17) is in contact with the outer wall of the top of the nut (16), and the outer wall of the bottom of the antiskid washer (18) is in contact with the outer wall of the top of the spring washer (17).

5. A new anti-loosening bolt coupling pair according to claim 1, characterized in that: The outer wall of the bottom of the mounting plate (3) is in contact with the outer wall of the top of the antiskid washer (18), and the outer wall of the top of the fixing plate (2) is in contact with the outer wall of the bottom of the positioning washer (11).

6. A new anti-loosening bolt coupling pair according to claim 1, characterized in that: The outer wall of the top of the mounting plate (3) is in contact with the outer wall of the bottom of the fixing plate (2).

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