Bolt anti-loosening structure

Abstract

The utility model relates to the technical field of bolt looseness prevention, in particular to a bolt looseness prevention structure which is characterized by comprising a base plate, at least two limiting plates, at least two fixing assemblies and at least two locking bolts. An adjusting clamping hole matched with a bolt head of the locking bolt is formed in the limiting plate, the limiting plate is arranged at the upper end of the base plate, the bolt head of the locking bolt is sleeved with the limiting plate through the adjusting clamping hole, and the limiting plate is fixedly connected with the base plate through a fixing assembly. According to the utility model, the locking bolt can be well limited and fixed, and the purpose of preventing the locking bolt from loosening under the action of impact, vibration or variable load is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt anti-loose technical field, specifically relates to a bolt anti-loose structure. BACKGROUND

[0002] The jaw crusher is composed of a movable jaw plate and a fixed jaw plate to form a crushing cavity for crushing materials, and is widely used in the crushing of various ores and large materials in the mining, smelting, building material, highway, railway, water conservancy and chemical industries. In the assembly of the jaw crusher, bolts are usually used to lock and fix some parts, such as the clamping block for fixing the side lining plate of the jaw crusher, which needs to be locked on the side plate of the rack by bolts. However, during the crushing process of the equipment, the friction between the threads will instantaneously decrease or disappear under the action of impact, vibration or variable load, resulting in connection failure and bolt loosening. Therefore, the bolt anti-loose structure is proposed to prevent the bolt from loosening under the action of impact, vibration or variable load. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a bolt anti-loose structure which can conveniently limit and fix the locking bolt and prevent the locking bolt from loosening under the action of impact, vibration or variable load.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme: a bolt anti-loose structure, comprising a backing plate, at least two limiting plates, at least two fixing assemblies and at least two locking bolts, the backing plate is provided with at least two through holes for allowing the studs of the locking bolts to pass through, the limiting plate is provided with adjusting clamping holes matched with the heads of the locking bolts, the limiting plate is arranged on the upper end of the backing plate and is sleeved on the head of the locking bolt through the adjusting clamping hole, and the limiting plate is fixedly connected with the backing plate through the fixing assembly.

[0005] Further, the fixing assembly comprises a fixing bolt, a limiting hole and a threaded hole, the limiting hole is arranged on the limiting plate, the upper end surface of the backing plate is provided with a plurality of threaded holes, and the stud of the fixing bolt can pass through the limiting hole and be threadedly connected in the corresponding threaded hole.

[0006] Further, the number of threaded holes is 3-10 and they are uniformly and intervally arranged along the circumferential direction of the through hole.

[0007] Further, the fixing assembly further comprises a flat washer, and the flat washer is sleeved on the fixing bolt and located on the upper end of the limiting plate.

[0008] Further, the number of through holes is 2-4.

[0009] Further, the adjusting clamping hole is in the shape of a plum blossom hole.

[0010] Further, the backing plate is in an integrated appearance structure.

[0011] From the above description, the bolt anti-loose structure has the following beneficial effects: during use, the locking bolt is first passed through the through hole on the pad plate, and the corresponding parts are locked and fixed, and the relative stability of the pad plate installation position can be ensured by cooperating with the mutual restriction of the plurality of locking bolts, then the limiting plate is arranged on the upper end of the pad plate and is sleeved on the bolt head of the locking bolt through the adjusting clamping hole, so as to realize the mutual stable clamping between the limiting plate and the bolt head of the locking bolt, finally the limiting plate is fixedly connected to the pad plate through the fixing assembly, so that the locking bolt can be well limited and fixed, and the purpose of preventing the locking bolt from loosening under the action of impact, vibration or variable load is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the bolt anti-loose structure.

[0013] Figure 2 It is a three-dimensional exploded view of the bolt anti-loose structure.

[0014] In the figure: 1-pad plate; 11-through hole; 2-limiting plate; 21-adjusting clamping hole; 3-fixing assembly; 31-fixing bolt; 32-limiting hole; 33-threaded hole; 34-flat washer; 4-locking bolt. DETAILED DESCRIPTION

[0015] The utility model is further described through specific implementation ways.

[0016] As shown in Figure 1 and Figure 2 The bolt anti-loose structure comprises a pad plate 1, at least two limiting plates 2, at least two fixing assemblies 3 and at least two locking bolts 4, the pad plate 1 is provided with at least two through holes 11 for passing the studs of the locking bolts 4, the limiting plate 2 is provided with an adjusting clamping hole 21 matched with the bolt head of the locking bolt 4, the limiting plate 2 is arranged on the upper end of the pad plate 1 and is sleeved on the bolt head of the locking bolt 4 through the adjusting clamping hole 21, and the limiting plate 2 is fixedly connected with the pad plate 1 through the fixing assembly 3.

[0017] In use, first, the locking bolt 4 is passed through the through hole 11 on the base plate 1, and the corresponding parts are locked and fixed, and the mutual restriction of the plurality of locking bolts 4 can ensure the relative stability of the installation position of the base plate 1, and then the limiting plate 2 is arranged on the upper end of the base plate 1 and is sleeved on the bolt head of the locking bolt 4 through the adjusting clamping hole 21, so as to realize the mutual stable clamping between the limiting plate 2 and the bolt head of the locking bolt 4, and finally the limiting plate 2 is fixedly connected to the base plate 1 through the fixing assembly 3, so that the locking bolt 4 can be well limited and fixed, and the purpose of preventing the locking bolt 4 from loosening under the action of impact, vibration or variable load is achieved.

[0018] Correspondingly, the fixing assembly 3 comprises a fixing bolt 31, a limiting hole 32 and a threaded hole 33, the limiting plate 2 is provided with the limiting hole 32, the upper end surface of the base plate 1 is provided with a plurality of threaded holes 33, the stud of the fixing bolt 31 can pass through the limiting hole 32 and be threadedly connected in the corresponding threaded hole 33, preferably, the number of the threaded holes 33 is 3-10 and they are uniformly spaced along the circumferential direction of the through hole 11, when the limiting plate 2 is sleeved on the bolt head of the locking bolt 4 through the adjusting clamping hole 21 at a suitable angle and the limiting hole 32 on the limiting plate 2 corresponds to one of the threaded holes, at this time the stud of the fixing bolt 31 can pass through the limiting hole 32 and be threadedly connected in the corresponding threaded hole 33, thereby realizing the fixed connection of the limiting plate 2 to the base plate 1.

[0019] In addition, the fixing assembly 3 further comprises a flat washer 34, which is sleeved on the fixing bolt 31 and located on the upper end of the limiting plate 2.

[0020] Preferably, the number of the through holes 11 is 2-4, and the number of the through holes 11 can be set according to actual needs, in this embodiment, the number of the through holes 11 is two, and correspondingly, the number of the limiting plate 2, the locking bolt 4 and the fixing assembly 3 is also two and is symmetrically arranged, in other embodiments, the number of the through holes 11 can also be four, and correspondingly, the number of the limiting plate 2, the locking bolt 4 and the fixing assembly 3 is also four and is arranged in a rectangular array respectively.

[0021] Preferably, the adjusting clamping hole 21 is in the shape of a keyhole, which facilitates better adjustment of the clamping angle between the limiting plate 2 and the locking bolt 4, and enables the limiting hole 32 on the limiting plate 2 to more smoothly correspond to one of the threaded holes, and the base plate 1 is in an integral outer shape.

[0022] The above are only some specific embodiments of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using the concept should be considered as an infringement of the protection scope of the present application.

Claims

1. A bolt lock structure characterized by: The fixing assembly comprises a fixing bolt, a limiting hole and a threaded hole, the limiting hole is arranged on the limiting plate, and the threaded hole is arranged on the upper end surface of the backing plate, the shank of the fixing bolt can pass through the limiting hole and be threadedly connected in the corresponding threaded hole.

2. The anti-loosening structure of a bolt according to claim 1, characterized in that: The number of the threaded holes is 3-10, and the threaded holes are uniformly and spacedly arranged along the circumferential direction of the through hole.

3. The anti-loosening structure of a bolt according to claim 2, characterized in that: The fixing assembly further comprises a flat washer, the flat washer is sleeved on the fixing bolt and located on the upper end of the limiting plate.

4. The anti-loosening structure of a bolt according to claim 2, characterized in that: The number of the through holes is 2-4.

5. The anti-loosening structure of a bolt according to claim 1, characterized in that: The adjusting clamping hole is in the form of a quincunx hole.

6. The anti-loosening structure of a bolt according to claim 1, characterized in that: The backing plate is in an integrated outer shape structure.

7. The anti-loosening structure of a bolt according to claim 1, characterized in that: ​

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