CN211009517U

CN211009517U - Check bolt assembly

Info

Publication number: CN211009517U
Application number: CN201921687337.9U
Authority: CN
Inventors: 周庆威; 周庆龙; 王辉
Original assignee: Hebei Yongsheng Petrochemical Machinery Mfg Co ltd
Current assignee: Hebei Yongsheng Petrochemical Machinery Mfg Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-14
Anticipated expiration: 2029-10-10

Abstract

A check bolt assembly comprises an outer bolt, wherein a groove is formed in the middle of the top surface of the outer bolt, an inner threaded hole is formed in the middle of the bottom surface of the groove, the inner bolt is installed in the inner threaded hole, racks are arranged in the strip-shaped grooves respectively, and the racks are all meshed with gears. An object of the utility model is to provide a can fasten the bolt, make the bolt can not take place not hard up in long-time use, can take out a very convenient check bolt subassembly when the bolt simultaneously. The outer periphery of the head of the inner bolt is in contact fit with the inner periphery of the groove, the inner bolt is installed in the screw hole in a threaded mode, the diameter of the gear is slightly smaller than the diameter of the inner bolt hole, the height of the gear is larger than that of the rack, when the outer bolt needs to be taken down, the inner bolt is reversely screwed to enable the rack to contract towards the inside of the strip-shaped groove, the rack does not fix the outer bolt, the outer bolt can be reversely screwed out at the moment, and the outer bolt can be used repeatedly.

Description

Check bolt assembly

Technical Field

The utility model belongs to the bolt field, specifically speaking are locking bolt subassembly.

Background

In the use process of mechanical equipment, particularly heavy mechanical equipment, bolts are gradually loosened after long-time use, particularly, in some mechanical equipment applied to mining, drilling and crushing, the loosening of the bolts is accelerated due to vibration and the like in the use process, the use is influenced if the loosening is accelerated, a series of accidents are caused if the loosening is heavy, and therefore the strengthening of the bolts becomes very important; at present, check bolts on the market are generally of two types, one type adopts a pawl to lock the bolt, but the bolt of the type is difficult to take off, the bolt is taken out forcibly, the bolt or a screw hole can be damaged, the other type adopts a mode of setting a split pin or connecting metal wires in series to fix the bolt, certain errors often appear due to the reasons of screwing in the position of the screw hole and the like when the bolt is screwed, in order to correctly install the split pin or the metal wires, the bolt is difficult to avoid the situation of not screwing, the due strength of the bolt is weakened, therefore, the bolt can be screwed in and reinforced by one type, and meanwhile, the bolt which can be taken out conveniently when in use is designed to be very necessary.

SUMMERY OF THE UTILITY MODEL

The utility model provides a check bolt subassembly for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

the utility model provides a check bolt subassembly, includes outer bolt, and the recess is seted up in the top surface middle part of outer bolt, and the interior screw hole is seted up in the bottom surface middle part of recess, and the bolt is installed to interior screw hole internal thread, the bottom surface middle part fixed mounting gear of interior screw bolt, and the communicating bar groove in several and interior screw hole is seted up to the periphery of outer bolt, and the bar inslot is equipped with the rack respectively, and the rack all meshes with the gear.

According to the anti-loosening bolt assembly, the outer bolt is an outer hexagon bolt, and the inner bolt is a circular inner hexagon bolt.

In the above anti-loose bolt assembly, the thread directions of the outer bolt and the inner bolt are the same.

According to the anti-loose bolt assembly, the groove is sealed by using the structural adhesive.

According to the anti-loose bolt assembly, the outer end face of the rack is an arc-shaped face.

According to the anti-loosening bolt assembly, the bottom end of the head of the inner bolt is in clearance fit with the bottom surface of the groove, the bottom surface of the inner bolt is in clearance fit with the top surface of the rack, and the bottom surface of the gear is in clearance fit with the bottom surface of the inner threaded hole.

The utility model has the advantages that: an object of the utility model is to provide a can fasten the bolt, make the bolt can not take place not hard up in long-time use, can take out a very convenient check bolt subassembly when the bolt simultaneously. The outer periphery of the head of the inner bolt is in contact fit with the inner periphery of the groove, the inner bolt is installed in the screw hole in a threaded manner, the diameter of the gear is slightly smaller than that of the inner bolt, the height of the gear is larger than that of the racks, the gear is simultaneously meshed with the racks, the number of the racks is preferably two, the length of the strip-shaped groove is larger than that of the racks, the outer periphery of the racks is in contact fit with the inner walls of the strip-shaped grooves, each rack can only move inwards and outwards along the corresponding strip-shaped groove, after the outer bolt is screwed into the outer screw hole and tightened, the inner bolt is screwed to drive the gear to rotate, the racks respectively move outwards along with the rotation of the gear to be in contact fit with the inner walls of the outer screw hole, so that the gear is clamped, the inner bolt is fixedly installed on the inner bolt and is in threaded connection with the inner bolt in the outer bolt, the reverse screwing of the inner bolt enables the rack to shrink towards the inside of the strip-shaped groove, the rack does not fix the outer bolt any more, and the outer bolt can be reversely screwed out at the moment, so that the double-screw bolt can be repeatedly used.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is a view in the direction A of FIG. 1; fig. 3 is a view from direction B of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a check bolt subassembly, as shown in the figure, includes outer bolt 1, and recess 2 is seted up in the top surface middle part of outer bolt 1, and interior screw hole 3 is seted up in the bottom surface middle part of recess 2, and interior screw 4 is installed to 3 internal threads of interior screw hole, and the bottom surface middle part fixed mounting gear 5 of interior screw 4, the periphery of outer bolt 1 is seted up several and the inside communicating bar groove 6 of interior screw hole 3, is equipped with rack 7 in the bar groove 6 respectively, and rack 7 all meshes with gear 5. An object of the utility model is to provide a can fasten the bolt, make the bolt can not take place not hard up in long-time use, can take out a very convenient check bolt subassembly when the bolt simultaneously. The outer periphery of the head of the inner bolt 4 is in contact fit with the inner periphery of the groove 2, the inner bolt 4 is in threaded installation in the screw hole 3, the diameter of the gear 5 is slightly smaller than the diameter of the inner screw hole 3, the height of the gear 5 is larger than the height of the racks 7, the gear 5 is simultaneously meshed with the racks 7, the number of the racks 7 is preferably two, the length of the strip-shaped groove 6 is larger than that of the rack 7, the outer periphery of the rack 7 is in contact fit with the inner wall of the strip-shaped groove 6, each rack 7 can only move inwards and outwards along the corresponding strip-shaped groove 6, after the outer bolt 1 is screwed into the outer screw hole and tightened, the inner bolt 4 is screwed to drive the gear 5 to rotate, the racks 7 respectively move outwards along with the rotation of the gear 5 to be in contact fit with the inner wall of the outer screw hole, so as to clamp the gear 5, the inner bolt 4, therefore, the rack 7 fixes the outer bolt 1 in the mounting screw hole of the device, when the outer bolt 1 needs to be taken down, the inner bolt 4 is reversely screwed to enable the rack 7 to contract towards the inside of the strip-shaped groove 6, the rack 7 is not fixed with the outer bolt 1 any more, and the outer bolt 1 can be reversely screwed out at the moment, so that the device can be repeatedly used.

Specifically, as shown in the drawings, the outer bolt 1 of the present embodiment is an outer hexagon bolt, and the inner bolt 4 is a circular inner hexagon bolt. The outer bolt 1 is an outer hexagon bolt to enable the outer bolt 1 to be screwed more easily, the inner bolt 4 is a round inner hexagon bolt to enable the inner bolt 4 to rotate in the groove 2, and meanwhile, the inner hexagon bolt 4 can be screwed more easily.

Specifically, as shown in the figure, the outer bolt 1 and the inner bolt 4 described in this embodiment have the same thread direction. The outer bolt 1 and the inner bolt 4 adopt the same thread screwing direction, so that the outer bolt 1 is not loosened by the reverse force when the inner thread 4 is rotated.

Further, as shown in the figure, the groove 2 of the present embodiment is sealed by using a structural adhesive. The structural adhesive can be used for reinforcing, bonding and repairing components, has the advantages of high strength and impact resistance, and can be used for bonding the inner bolt 4 in the groove 2 by screwing the inner bolt 4 after the inner bolt 4 is screwed down, so that the inner bolt 4 can be reinforced, the inner bolt 4 is prevented from loosening, and when the inner bolt 4 needs to be screwed down, the structural adhesive is melted to lose efficacy by using high temperature, and then the structural adhesive is peeled off, so that the inner bolt 4 can be screwed down.

Further, as shown in the drawings, the outer end surface of the rack 7 according to the present embodiment is an arc-shaped surface. The arc face can increase the area of contact between rack 7 and the outer screw hole, makes rack 7's reinforcement effect become better, makes outer bolt 1 more difficult not hard up, and the outer terminal surface of rack 7 is soft big coefficient of friction material, can also avoid haring the installation screw of this device like this.

Furthermore, as shown in the figure, the bottom end of the head of the inner bolt 4 in this embodiment is in clearance fit with the bottom surface of the groove 2, the bottom surface of the inner bolt 4 is in clearance fit with the top surface of the rack 7, and the bottom surface of the gear 5 is in clearance fit with the bottom surface of the inner screw hole 3. After the outer end of the rack 7 extends out of the outer bolt 1, gaps are reserved between the bottom end of the head of the inner bolt 4 and the bottom surface of the groove 2, between the bottom surface of the inner bolt 4 and the top surface of the rack 7, and between the bottom surface of the gear 5 and the bottom surface of the inner threaded hole 3, and the gear 5 is still meshed with the rack 7 at the moment, so that the problem that the outer bolt 1 cannot be completely fixed due to the fact that the rack 7 cannot clamp the inner wall of the outer thread due to clamping cannot occur.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A check bolt assembly characterized in that: the novel bolt comprises an outer bolt (1), wherein a groove (2) is formed in the middle of the top surface of the outer bolt (1), an inner threaded hole (3) is formed in the middle of the bottom surface of the groove (2), the inner threaded bolt (4) is installed in the inner threaded hole (3), a gear (5) is fixedly installed in the middle of the bottom surface of the inner threaded bolt (4), a plurality of strip-shaped grooves (6) communicated with the inner portion of the inner threaded hole (3) are formed in the periphery of the outer bolt (1), racks (7) are respectively arranged in the strip-shaped grooves (6), and the racks (7) are all meshed with the.

2. A lockbolt assembly as claimed in claim 1, wherein: the outer bolt (1) is an outer hexagon bolt, and the inner bolt (4) is a circular inner hexagon bolt.

3. A check bolt assembly as claimed in claim 1 or 2, wherein: the thread directions of the outer bolt (1) and the inner bolt (4) are the same.

4. A lockbolt assembly as claimed in claim 1, wherein: the groove (2) is internally sealed by structural adhesive.

5. A check bolt assembly as defined in claim 4, wherein: the outer end face of the rack (7) is an arc-shaped face.

6. A lockbolt assembly as claimed in claim 1, wherein: the bottom end of the head of the inner bolt (4) is in clearance fit with the bottom surface of the groove (2), the bottom surface of the inner bolt (4) is in clearance fit with the top surface of the rack (7), and the bottom surface of the gear (5) is in clearance fit with the bottom surface of the inner threaded hole (3).