CN210050161U

CN210050161U - Built-in explosion point check bolt

Info

Publication number: CN210050161U
Application number: CN201920544049.1U
Authority: CN
Inventors: 姚爱民; 孙尚贞; 陈伟; 刘文欣; 葛多洲; 王世杰; 陈光启; 吕林红
Original assignee: BENGBU PLANETARY ENGINEERING MACHINERY Co Ltd
Current assignee: BENGBU PLANETARY ENGINEERING MACHINERY Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-11
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a built-in explosion point check bolt, the bolt mainly constitutes: the bolt comprises a bolt base body, primer, smokeless powder and a plug, wherein the primer is an integrated component and comprises a primer cap, explosive, substrate paper and a primer anvil block. The use method is simple and high in efficiency, an operator only needs to put the bolt into the mounting hole of the part and then uses the hammer to match with the firing pin to strike the primer of the bolt to complete the mounting, and the whole process only needs a plurality of seconds; the construction tool is simple, only one hammer and one firing pin are needed, the operation can be carried out by one person, and matched equipment such as a power supply, an air source and the like is not needed; because no power supply is needed in the operation process, workers can work in special environments such as the field, high altitude, moist, insulated places, narrow spaces and the like.

Description

Built-in explosion point check bolt

Technical Field

The utility model relates to a can realize locking bolt that moves after part assembly mainly is using at needs disposable installation, need not the secondary and dismantles and require to connect reliable place, can use in fields such as aerospace, railway, bridge, heavy vehicle, large-scale mechanical equipment, boats and ships, building.

Background

The bolt is the most widely used part in mechanical connection, and can be divided into a detachable type and a non-detachable type according to the detachable mode. The expansion bolt utilizes the wedge inclination to impel its steel bushing inflation to produce the friction bond power to this effect of reaching the connection, but generally only use on building body such as with object fixed connection cement, concrete, brick or rock, can not use the link between the metal parts, because it has great radial clearance with being connected between the object, leads to its connection performance not very reliable, if there is great vibrations by the object of being connected, probably takes place the pine and takes place.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can realize the locking bolt that moves behind the part assembly is provided, mainly uses at needs disposable installation, need not the secondary and dismantles and require to connect reliable place.

The utility model discloses the technical problem that will solve adopts following technical scheme to realize:

the built-in explosion point anti-loose bolt mainly comprises a bolt base body, primer, gunpowder and a plug;

the bolt base body comprises a nut and a screw, the nut and the screw are of an integral structure, the screw of the bolt base body is a hollow screw, the plug is positioned at the top end of the screw, and the hollow screw is plugged by the plug;

the gunpowder is filled in the hollow screw;

a groove is formed in the nut, and a firing hole is formed in the bottom of the groove and communicates the groove with the hollow interior of the screw;

the primer is an integrated component and consists of a primer cap, explosive, substrate paper and a primer anvil block; specifically, the detonation powder is positioned in a primer cap, backing paper is laid on the detonation powder, and the primer anvil block and the primer cap surround to wrap the detonation powder and the backing paper;

the primer is located in a groove of the nut, the primer cap of the primer faces outwards, and the primer anvil block corresponds to the ignition hole.

The utility model discloses a further technique:

preferably, the plug is in threaded connection with the screw rod, so that on one hand, the assembly of the plug is facilitated, and on the other hand, the situation that the plug falls off due to the fact that gunpowder is just exploded to cause the action generated by gunpowder explosion to deviate from the screw rod is avoided, and the effect of expanding the screw rod cannot be effectively achieved.

Preferably, the gunpowder is smokeless powder which produces less solid residue upon detonation.

Preferably, nitroglycerin and nitrocellulose with high nitrogen content are adopted as the smokeless powder.

Preferably, the primer anvil adopts the structure of indent, and the benefit of setting up like this lies in, for the inslot leaves the space, when avoiding detonating the powder to explode, the space is not enough, and the expansion nut makes groove or nut produce distortion.

Its advantages are as follows:

1. the use method is simple and high in efficiency, an operator only needs to put the bolt into the mounting hole of the part and then uses the hammer to match with the firing pin to strike the primer of the bolt to complete the mounting, and the whole process only needs a plurality of seconds;

2. the construction tool is simple, only one hammer and one firing pin are needed, the operation can be carried out by one person, and matched equipment such as a power supply, an air source and the like is not needed;

3. because no power supply is needed in the operation process, workers can work in special environments such as the field, high altitude, moist, insulated places, narrow spaces and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;

fig. 1 is a schematic structural view of a built-in explosion point anti-loose bolt provided by the utility model;

FIG. 2 is a schematic view of the primer structure provided by the present invention;

FIG. 3 is a schematic view of the working of the anti-loosening bolt with built-in explosion point provided by the present invention;

FIG. 4 is a schematic view of two types of structures of a smooth surface and a thread on the surface of a rod body of the bolt, wherein FIG. 4A is a schematic view of a thread type structure; fig. 4B is a schematic diagram of a smooth surface structure.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. 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 can realize locking bolt that moves after part assembly, mainly uses in the place that needs disposable installation, need not secondary dismantlement and require to connect reliably.

The functional characteristics are as follows:

1. chemical potential energy generated by instantaneous combustion of gunpowder is utilized to promote the expansion of the bolt body and increase the outer diameter of the bolt body, so that the radial gap between the bolt and the part hole is eliminated, and the bolt and the connected piece are instantaneously combined together;

2. the expansion of the bolt can generate instant extrusion hardening effect on the cylindrical surface of the hole of the connected piece, so that the strength of the material of the hole part of the connected piece can be effectively improved;

3. the surface of the bolt body can be processed into a smooth surface and a thread to meet different link requirements, as shown in fig. 4.

as shown in fig. 1, the bolt mainly consists of: the bolt comprises a bolt base body 1, a primer 2, gunpowder 3 and a plug 4.

The bolt base body 1 comprises a nut and a screw, the nut and the screw are of an integral structure, the screw of the bolt base body is a hollow screw, the plug 4 is positioned at the top end of the screw, and the plug 4 plugs the hollow screw;

the gunpowder 3 is filled in the hollow screw;

a groove is formed in the screw cap, a firing hole 5 is formed in the bottom of the groove, and the groove is communicated with the hollow interior of the screw rod through the firing hole 5;

as shown in fig. 2, the primer 2 is an integrated component, and is composed of a primer cap 21, a primer 22, a substrate paper 23 and a primer anvil 24; specifically, the explosive 22 is located in a primer cap, a backing paper 23 is laid on the explosive 22, and the primer anvil 24 surrounds the primer cap 21 to wrap the explosive 22 and the backing paper 23 therein;

the primer 2 is positioned in a groove of a nut, a primer cap 21 of the primer 2 faces outwards, and a primer anvil block 24 corresponds to the ignition hole.

The primer anvil block 24 adopts the structure of indent, and the benefit that sets up like this lies in, for the inslot leaves the space, when avoiding detonating the powder to explode, the space is not enough, and the expansion nut makes groove or nut produce distortion.

As shown in fig. 1, the plug 4 is in threaded connection with the screw rod, so that on one hand, the assembly of the plug is facilitated, and on the other hand, the situation that the plug falls off due to the explosion of gunpowder, which causes the action of the explosion of gunpowder to deviate from the screw rod, cannot be effectively realized to expand the screw rod.

The gunpowder adopts smokeless powder which generates less solid residues during explosion.

The smokeless powder adopts nitroglycerin and nitrocellulose with higher nitrogen content.

As shown in fig. 3, when the bolt is used, the bolt is firstly screwed into the matching bolt holes of the first part 6 and the second part 7, then the firing pin sleeve 8 is held by hand to be sleeved on the head of the bolt to press the bolt, the firing pin 9 is inserted into the firing pin sleeve 8, finally the firing pin is knocked by the firing hammer 10, and the firing pin sleeve is taken down to finish the bolt installation. In the whole process, after the striking hammer strikes the striking pin, the primer cap deforms and dents under stress, the primer is detonated to generate sparks, the sparks ignite the smokeless powder through the ignition hole, the high pressure generated by the instantaneous combustion of the smokeless powder enables the rod part of the bolt base body to expand and deform outwards, the expansion and deformation of the bolt enables the rod part of the bolt and the part hole to be tightly attached together, meanwhile, the part hole is extruded, and the bolt and the part are tightly connected together.

It is noted that, herein, relational terms such as first and second, and the like may 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. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Built-in explosion point check bolt, its characterized in that: mainly comprises a bolt base body, a primer, gunpowder and a plug;

the gunpowder is filled in the hollow screw;

2. The built-in explosion point anti-loose bolt according to claim 1, characterized in that: the plug is in threaded connection with the screw.

3. The built-in explosion point anti-loose bolt according to claim 1, characterized in that: the gunpowder is smokeless powder.

4. The built-in explosion point anti-loose bolt according to claim 3, characterized in that: the smokeless powder adopts nitroglycerin and nitrocellulose with higher nitrogen content.

5. The built-in explosion point anti-loose bolt according to claim 1, characterized in that: the primer anvil block adopts a concave structure.