CN208107064U - A kind of bolt locking device of engineering machinery counter weight - Google Patents

Abstract

The utility model discloses a kind of bolt locking devices of engineering machinery counter weight, are related to the bolt locking device technical field of engineering machinery counter weight.Including bolt and counterweight, one end of bolt runs through counterweight and extends to the top of counterweight, the surface of bolt and be located at counterweight inside position be arranged with expansion sleeve, the top of bolt is arranged with lock sleeve, the bottom of lock sleeve is fixedly connected with thread bush, the top of lock sleeve is arranged with locking nut, and the bottom of locking nut is threadedly coupled with thread bush.The utility model is used cooperatively by bolt, lock sleeve, thread bush, locking nut and fixture nut, it further enhances and tightens effect, locking nut makes lock sleeve deform, push rod is formed at the threaded engagement of rectangular opening and bolt surface, thread bush is prevented to rotate backward, while fixed block is in close contact expansion sleeve deformation with counterweight, it is destroyed caused by preventing stress excessive, it avoids and receives vibration and loosen, improve work efficiency and safety, meet the using effect of user.

Description

A kind of bolt locking device of engineering machinery counter weight

Technical field

The utility model belongs to technical field of engineering machinery, locks dress more particularly to a kind of bolt of engineering machinery counter weight It sets.

Background technique

Existing bolt locking device is made of bolt, slotted nut and split pin, on each regular hexagon side of slotted nut On be all provided with notch.After slotted nut set is attached on bolt and is rotated in place, make on the two symmetrical notches and bolt of nut The pin hole alignment radially opened up, and insertion opening pin, block slotted nut, i.e. stoppable by split pin, guarantee assembly Compactedness；But due to there was only 6 notches, the i.e. angle of the two neighboring locked position of slotted nut on slotted nut circumference It is separated by 60 degree, then when the minimum value of the adjacent locked position of slotted nut is that slotted nut rotates 60 degree, slotted nut is along bolt axle To the distance of synchronizing moving；It is influenced by processing technology, the fit-up gap after assembly parts assembly is difficult to control, when slotted nut revolves When going to position and eliminating fit-up gap, it is likely that the pin hole on notch and bolt on slotted nut occur can not align, and open Slot nut further rotate it is motionless, if one step of the derotation to the latter notch to position locking, between nut and assembly parts Meeting leaving gap, causes assembly not firm enough, and it is unqualified to eventually lead to assembly.

Pine is easy when needing the weight born larger in the bolt locking device of engineering machinery counter weight, and being shaken It is de-, the loosening of engineering machinery counter weight part is caused, is easy to fall off when receiving impact, engineering machinery is caused to can not work normally, is produced Raw certain loss, and there are some potential safety problemss, further decrease the efficiency of work, are not able to satisfy the effect used.

Utility model content

The purpose of this utility model is to provide a kind of bolt locking devices of engineering machinery counter weight, by engineering machinery The improvement and optimization of the bolt locking device structure of counterweight, are easy to loosen, cause engineering machinery when solving existing be shaken The loosening of counterweight is easy to fall off when receiving impact, and there are some potential safety problemss, influences the efficiency of engineering machinery work Problem.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions：

The utility model is a kind of bolt locking device of engineering machinery counter weight, including bolt and counterweight, the bolt One end through counterweight and extend to the top of counterweight, the surface of the bolt and position being located inside counterweight is arranged There is expansion sleeve, the top of the bolt is arranged with lock sleeve, and the bottom of the lock sleeve is fixedly connected with thread bush, the screw thread The top of set is arranged with locking nut, and the bottom of the locking nut is threadedly coupled with thread bush, the surface and position of the bolt It is threaded with fixture nut in the position of the bottom at the top and thread bush of counterweight, all sides of the lock sleeve are provided with ten Six rectangular openings, the inner surface and the outer surface of the thread bush are provided with screw thread, the screw thread of the thread bush outer surface and locking Nut matches.

Further, the bottom of the bolt is fixedly connected with fixed block, and the fixed block is cone type.

Further, the locking nut and the outer profile of fixture nut are regular hexagon.

Further, the surface of the expansion sleeve and the bottom positioned at counterweight and the position at the top of fixed block, which are arranged with, adds Strong plate.

Further, one end that the fixed block is fixedly connected with bolt 1mm small compared with expansion sleeve internal diameter, the fixed block are remote 1cm big compared with expansion sleeve from one end of bolt.

The utility model has the advantages that：

The utility model is used cooperatively by bolt, lock sleeve, thread bush, locking nut and fixture nut, fixed spiral shell Counterweight is closely connect by mother with bolt, and thread bush and fixture nut play the role of double nut, is further enhanced and is tightened Effect, locking nut make lock sleeve deform, and push rod is formed at the threaded engagement of rectangular opening and bolt surface, prevent screw thread Set rotates backward, and further prevents the rotation of fixture nut, while fixed block connects expansion sleeve deformation closely with counterweight Touching, and prevent fixed block to destroy counterweight and threaded hole by stiffening plate, it is therefore prevented that it destroys, avoids caused by stress is excessive Receiving vibration loosens, and improves work efficiency and safety, meets the using effect of user.

Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is the structural schematic diagram of the utility model structure；

Fig. 2 is the top view of the locking nut of the utility model structure；

Fig. 3 is the sectional view of the locking nut of the utility model structure；

Fig. 4 is the top view of the lock sleeve of the utility model structure；

Fig. 5 is the side view of the lock sleeve of the utility model structure；

In attached drawing, parts list represented by the reference numerals are as follows：

1- bolt, 2- counterweight, 3- expansion sleeve, 4- lock sleeve, 5- thread bush, 6- locking nut, 7- fixture nut, 8- Rectangular opening, 9- fixed block, 10- stiffening plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts All other embodiment obtained, fall within the protection scope of the utility model.

In the description of the present invention, it should be understood that term " aperture ", "upper", "lower", " thickness ", "top", " in ", " length ", "inner", indicating positions or the positional relationship such as " surrounding ", be merely for convenience of description the utility model and simplification Description, rather than the component or element of indication or suggestion meaning must have a particular orientation, and are constructed and grasped with specific orientation Make, therefore should not be understood as limiting the present invention.

It please refers to shown in Fig. 1-5, the utility model is a kind of bolt locking device of engineering machinery counter weight, including bolt 1 With counterweight 2, one end of bolt 1 is through counterweight 2 and extends to the top of counterweight 2, the surface of bolt 1 and is located at counterweight Position inside 2 is arranged with expansion sleeve 3, and the top of bolt 1 is arranged with lock sleeve 4, plays the role of preventing from loosening, lock sleeve 4 bottom is fixedly connected with thread bush 5, and the top of thread bush 5 is arranged with locking nut 6, the bottom of locking nut 6 and thread bush It is threadedly coupled, the position of the surface of bolt 1 and the bottom positioned at the top and thread bush 5 of counterweight 2 is threaded with fixed spiral shell Mother 7, all sides of lock sleeve 4 are provided with 16 rectangular openings 8, and the inner surface and the outer surface of thread bush 5 is provided with screw thread, thread bush The screw thread of 5 outer surfaces is matched with locking nut 6.

Wherein such as Fig. 1, the bottom of bolt 1 are fixedly connected with fixed block 9, and fixed block 9 is cone type, so that expansion sleeve 3 Because fixed block 9 extrusion deformation more evenly, avoid local pressure make expansion sleeve 3 destroy the occurrence of.

Wherein such as Fig. 1, locking nut 6 and the outer profile of fixture nut 7 are regular hexagon, facilitate and tighten and dismantle.

Wherein as Fig. 1, the surface of expansion sleeve 3 and the position being located at the top of the bottom and fixed block 9 of counterweight 2 are arranged with and add Strong plate 10, so that fastening is more stable.

Wherein such as Fig. 1, compared with the expansion sleeve small 1mm of 3 internal diameter, fixed block 9 is separate for one end that fixed block 9 is fixedly connected with bolt 1 One end of bolt 1 is 1cm big compared with expansion sleeve 3.

In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples In can be combined in any suitable manner.

The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this Utility model.The utility model is limited only by the claims and their full scope and equivalents.

Claims (5)

1. a kind of bolt locking device of engineering machinery counter weight, including bolt (1) and counterweight (2), it is characterised in that：The spiral shell One end of bolt (1) is through counterweight (2) and extends to the tops of counterweight (2), the surface of the bolt (1) and is located at counterweight (2) internal position is arranged with expansion sleeve (3), and the top of the bolt (1) is arranged with lock sleeve (4), the lock sleeve (4) Bottom is fixedly connected with thread bush (5)；

The top of the thread bush (5) is arranged with locking nut (6), and the bottom of the locking nut (6) and screw thread external threading connect It connects, the position of the surface of the bolt (1) and the bottom positioned at the top and thread bush (5) of counterweight (2) is threaded with solid Determine nut (7), all sides of the lock sleeve (4) are provided with several rectangular openings (8), the inner surface and appearance of the thread bush (5) Face is provided with screw thread, and the screw thread of thread bush (5) outer surface is matched with locking nut (6).

2. a kind of bolt locking device of engineering machinery counter weight according to claim 1, which is characterized in that the bolt (1) bottom is fixedly connected with fixed block (9), and the fixed block (9) is cone type.

3. a kind of bolt locking device of engineering machinery counter weight according to claim 1, which is characterized in that the locking screw The outer profile of female (6) and fixture nut (7) is regular hexagon.

4. a kind of bolt locking device of engineering machinery counter weight according to claim 1, which is characterized in that the expansion sleeve (3) surface and the bottom positioned at counterweight (2) and the position at the top of fixed block (9) is arranged with stiffening plate (10).

5. a kind of bolt locking device of engineering machinery counter weight according to claim 1, which is characterized in that the fixed block (9) one end being fixedly connected with bolt (1) is compared with expansion sleeve (3) the small 1mm of internal diameter, the one end of the fixed block (9) far from bolt (1) Compared with expansion sleeve (3) big 1cm.