CN215491355U - Bottom screw for fixing towing pipe - Google Patents

Abstract

The utility model discloses a bottom screw for fixing a towing pipe, which belongs to the technical field of small-caliber shell assembly and comprises a bottom screw, wherein the bottom screw is of an annular structure, a plurality of sawteeth are equidistantly arranged on one end face of the bottom screw, wrench holes are formed in the other end face of the bottom screw, external threads are arranged on the side wall of the bottom screw, the cross section of each wrench hole is semicircular, two wrench holes are formed in each wrench hole, the two wrench holes are symmetrically arranged by taking the diameter line of the bottom screw as an axis, anaerobic glue is coated on the external threads, and the towing pipe can be fixedly arranged in a cavity at the bottom of a projectile through the arrangement, so that the phenomenon that the towing pipe falls off during shooting can be avoided, the safety of a cannon is further prevented from being influenced by the fact that the towing pipe falls off in a chamber during shooting, and a fire disaster caused by the fact that the towing pipe falls off the chamber can be further prevented.

Description

Bottom screw for fixing towing pipe

Technical Field

The utility model relates to the technical field of small-caliber cannonball assembly, in particular to a bottom screw for fixing a towing pipe.

Background

The projectile is a shell or bullet containing a chemical agent that emits light. After emission, red, yellow or green light is emitted. To indicate trajectory and target. The difference between the projectile and other bullet heads is that the bullet heads can shine in flight, and show a trajectory in an environment with insufficient light source or darkness to assist a shooter in trajectory correction, even as a way and a tool for guiding and communicating the direction and the position of a friend attack.

The bottom of a certain small-caliber bullet is provided with the collimator, the collimator is generally fixed in a cavity at the bottom of the bullet in a sticky mode, the bullet is shot at a risk of falling, if the firing safety of the cannon is influenced when the bullet falls in the chamber, the chamber is easy to cause fire when the bullet falls out, and therefore, the collimator is firmly fixed at the bottom of the bullet and a new collimator fixing mode needs to be designed.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a bottom screw for fixing a traction tube, which solves the problems mentioned in the background of the art.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a fixed bottom spiral shell for fluorescent tube, includes end spiral shell, end spiral shell is loop configuration, the one end terminal surface equidistance of end spiral shell is equipped with a plurality of sawtooth, another terminal surface of end spiral shell is equipped with the wrench hole, the lateral wall of end spiral shell is equipped with the external screw thread.

As a further scheme of the utility model: the cross section of the wrench hole is semicircular.

As a further scheme of the utility model: the wrench holes are two, and the two wrench holes are symmetrically arranged by taking the diameter line of the bottom screw as an axis.

As a further scheme of the utility model: the external threads are coated with anaerobic adhesive.

In conclusion, the utility model has the following beneficial effects:

1. the end face of the bottom screw is provided with a plurality of sawteeth, the other end face is provided with a wrench hole, the wrench hole is symmetrically arranged by taking the diameter of the bottom screw as the axis, the side wall of the bottom screw is provided with external threads, after the collimator is arranged in a cavity at the bottom of the pellet, one face of the bottom screw with the sawteeth is screwed in the bottom of the pellet, then the special wrench is used for rotating the bottom screw through the wrench hole, the bottom screw is wrenched, the sawteeth on the end face of the bottom screw generate elastic deformation under the action of tightening torque, the frictional resistance on the surface is increased, the effect of fastening the collimator is realized, the phenomenon that the collimator can not fall off when shooting is avoided, the shooting safety can be effectively guaranteed, and the burning phenomenon caused by collimator can be prevented.

Drawings

FIG. 1 is a schematic view of an assembly structure of the present invention;

FIG. 2 is a perspective view of a bottom screw of the present invention;

FIG. 3 is a front view of the bottom screw of the present invention;

FIG. 4 is a top view of the bottom screw of the present invention;

FIG. 5 is a bottom view of the bottom screw of the present invention;

in the figure: 1. a bottom screw; 2. a wrench hole; 3. an external thread; 4. saw teeth; 5. a light dragging envelope; 6. a tracer agent; 7. the bottom of the pill.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides the following technical scheme;

as shown in fig. 1-5, a bottom screw for fixing a streamer tube, comprising a bottom screw 1, wherein the whole bottom screw 1 is of an annular structure, a plurality of saw teeth 4 are arranged on the end surface of one end of the bottom screw 1, a wrench hole 2 is arranged on the other end surface of the bottom screw 1, and an external thread 3 is arranged on the side wall of the bottom screw 1, through the arrangement, when the streamer tube is required to be fixed in the internal cavity of the bottom 7 of a projectile, in order to more firmly fix the streamer tube in the internal cavity of the bottom 7 of the projectile, firstly, the end surface of the bottom screw 1 provided with the saw teeth 4 is screwed into the bottom 7 of the projectile, and a special tool is used to be inserted into the wrench hole 2, then the bottom screw 1 is rotated, so that the end surface of the bottom screw 1 provided with the saw teeth 4 is in contact with the streamer tube shell 5, a streamer medicament 6 is filled in the streamer tube shell 5, and the saw teeth 4 at the moment generate elastic deformation under the action of screwing torque, thereby increasing the friction resistance of the contact surface, therefore, the effect of fastening the collimator can be achieved, the collimator can be more stably fixed in the bottom 7 of the shot, the collimator can be prevented from falling off when shooting, the collimator can influence the shooting safety of the cannon if falling off in the chamber when shooting, and a fire disaster is easily caused if falling off outside the chamber, and the collimator can be more firmly fixed in the bottom 7 of the shot by the bottom bolt 1 structure, so that the occurrence of the above situation can be prevented, and the practicability of the bottom bolt 1 structure is stronger.

Specifically, the method comprises the following steps: the cross-section of the wrench hole 2 is semicircular, and the wrench hole 2 is semicircular, so that an adaptive tool can be inserted into the wrench hole 2 to rotate the bottom screw 1, and the bottom screw 1 can fix the collimator in the bottom 7 of the projectile more conveniently.

Specifically, the method comprises the following steps: spanner hole 2 is equipped with two, two spanner holes 2 use the diameter line of end spiral shell 1 to set up as axis symmetry, through such setting, when needs twist end spiral shell 1 in to shot bottom 7, can use dedicated instrument to insert in spanner hole 2 this moment, then twist end spiral shell 1 in to shot bottom 7, spanner hole 2 through two symmetry settings this moment, make when twisting end spiral shell 1, can be more simple and convenient and laborsaving, thereby can promote staff's work efficiency.

Specifically, the method comprises the following steps: scribble the anaerobism glue on external screw thread 3, scribble the anaerobism glue through the external screw thread 3 on end spiral shell 1 lateral wall, when end spiral shell 1 when twisting into bullet bottom 7 in, through the characteristic of anaerobism glue for the setting that end spiral shell 1 can fasten more is in bullet bottom 7, and the anaerobism glue can also play the effect of leaking stoppage, thereby increases the leakproofness when end spiral shell 1 screw in enters.

The anaerobic adhesive is applied to aerospace, war industry, automobiles, plate stagnation construction, household appliances, hardware, casting, pipeline placement engineering and the like. For example: locking, looseness prevention, sealing and leakage prevention of a plate stagnation threaded part, assembling and fixing of a bearing, a shaft sleeve, a gear and the like, sealing of a flange or a plane joint face, micropore leakage stoppage of a casting and a weldment, sealing of pipe teeth of pipelines of gas, water supply, fire fighting and air conditioning at a place and the like. The anaerobic adhesive can be applied to locking, sealing, fixing, bonding, leaking stoppage and the like. Anaerobic adhesives have become indispensable liquid tools in the mechanical industry. The method has wide application in the industries of aerospace, war industry, automobiles, machinery, electronics, electricity and the like.

The anaerobic adhesive is simple to operate, pollution-free in operation, capable of preventing rust, excellent in performance, and good in heat resistance, pressure resistance, low temperature resistance, impact resistance, shock absorption, corrosion resistance, fog resistance and the like.

The working principle of the bottom screw for fixing the towing pipe of the utility model is as follows:

after the collimator is arranged in the cavity of the bottom 7 of the shot, the collimator needs to be fastened in the cavity of the bottom 7 of the shot at the moment, the bottom bolt 1 is firstly screwed into the bottom 7 of the shot, then the bottom bolt 1 is wrenched through the wrench hole 2 by using a special tool, the end face of the bottom bolt 1 provided with the saw teeth 4 is contacted with the collimator shell 5 at the moment, the saw teeth 4 generate elastic deformation firstly under the action of tightening torque, the contact area is increased, the collimator is fastened, and the collimator cannot fall off during shooting.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (4)

1. A bottom screw for fixing a traction tube comprises a bottom screw (1) and is characterized in that;

end spiral shell (1) is the loop configuration, the one end terminal surface equidistance of end spiral shell (1) is equipped with a plurality of sawtooth (4), another terminal surface of end spiral shell (1) is equipped with wrench hole (2), the lateral wall of end spiral shell (1) is equipped with external screw thread (3).

2. A bottom screw for fixing a traction tube as claimed in claim 1, wherein: the cross section of the wrench hole (2) is semicircular.

3. A bottom screw for fixing a traction tube as claimed in claim 2, wherein: the wrench holes (2) are arranged in two, and the two wrench holes (2) are symmetrically arranged by taking the diameter line of the bottom screw (1) as an axis.

4. A bottom screw for fixing a traction tube as claimed in claim 1, wherein: anaerobic adhesive is coated on the external threads (3).

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