CN219649750U - Small-size long tail pipe box spanner frock - Google Patents

Abstract

The utility model relates to the technical field of small solid rocket engine spray pipes, in particular to a small long tail spray pipe socket wrench tool. The novel socket comprises a socket body, phi 8 multiplied by 8 uniformly distributed convex keys and a spanner handle, wherein the spanner handle is symmetrically welded on two sides of the rear end of the socket body, and the phi 8 multiplied by 8 uniformly distributed convex keys are arranged at the front end of the socket body. The phi 8 multiplied by 8 is uniformly distributed with the convex keys and the back surface of the thread of the spray pipeThe uniformly distributed key grooves have the same shape, so that slipping and separating of the socket spanner and the spray pipe shell are reduced. The phi 8 multiplied by 8 uniformly distributed convex keys can be in the form of circular arcs, quadrangles, pentagons or hexagons. The utility model can meet the requirements of mounting, dismounting and reinforcing the long tail nozzle shell when the outer wall of the small long tail nozzle has no wrench groove and the mounting space in the radial direction is insufficient, and can realize the long tail nozzle shell to pass through the sleeve main body, thereby avoiding the damage to the shell in the process of loading and unloading.

Description

Small-size long tail pipe box spanner frock

Technical Field

The utility model relates to the technical field of small solid rocket engine spray pipes, in particular to a small long tail spray pipe socket wrench tool.

Background

In the working process of the solid rocket engine, the pressure of a combustion chamber can reach 14MPa, high-temperature and high-pressure gas expands through the spray pipe to generate thrust, and the shell of the spray pipe is used as a main bearing part of the spray pipe, so that the structural strength verification is carried out. The strength verification of the nozzle housing is mainly carried out by means of an analytical method or a finite element algorithm, and a series of tests are required to be carried out on the nozzle housing in order to check the correctness of the design and the quality detection of the product.

The shell structure of a small long tail spray pipe is shown in figure 1, the overall structure of the spray pipe is small in size, the large end of the spray pipe is connected with a combustion chamber through threads, the wall thickness of a straight column section of the spray pipe is only 1mm, an installation clamping position cannot be set, only eight uniformly distributed semicircular key grooves are formed in the back of the threads, and the installation space in the radial direction is insufficient.

At present, a small-sized long tail nozzle shell structure has the following characteristics:

1) The long tail spray pipe is small in size and cannot be connected with the combustion chamber through bolts, the design connection mode is threaded connection, and the shell needs to be rotated to complete installation;

2) The whole structure of the spray pipe is small in size, the wall thickness of the straight column section of the spray pipe is only 1mm, and no proper mounting and clamping position exists;

3) A semicircle key groove for installation sets up in the screw thread back, and the installation space is not enough in radial direction.

Disclosure of Invention

Technical problem to be solved by the utility model

The utility model provides a small long tail nozzle socket wrench tool which aims at solving the problems that the outer wall of a small long tail nozzle is not provided with a proper mounting and clamping position, the mounting space in the radial direction is insufficient and the like.

In order to solve the technical problems, the utility model adopts the technical proposal

A small-sized long tail nozzle socket wrench tool comprises a socket main body,The novel socket comprises a socket body and is characterized in that the socket body is formed by uniformly distributing convex keys and wrench handles, wherein the wrench handles are symmetrically welded on two sides of the rear end of the socket body, and the +.>The uniformly distributed convex keys are arranged at the front end of the sleeve body.

Further, the sleeve body material is D406A.

Further, the saidUniformly distributed convex keys and the back of the thread of the spray pipe>The uniformly distributed key grooves have the same shape, so that slipping and separating of the socket spanner and the spray pipe shell are reduced.

Further, the saidThe uniformly distributed convex keys can be in the form of circular arcs, quadrilaterals, pentagons or hexagons.

The utility model has the technical effects that

The utility model can meet the requirements of mounting, dismounting and reinforcing the long tail nozzle shell when the outer wall of the small long tail nozzle has no wrench groove and the mounting space in the radial direction is insufficient, and can realize the long tail nozzle shell to pass through the sleeve main body, thereby avoiding the damage to the shell in the process of loading and unloading.

Drawings

Fig. 1: a schematic structural view of a small spray pipe shell;

fig. 2: a tool structure schematic diagram of the socket wrench;

fig. 3:a structure diagram of uniformly distributed convex keys;

wherein: 1-sleeve body, 2-Convex keys are uniformly distributed, and a handle is 3-spanner.

Detailed Description

The utility model discloses a socket wrench tool special for a small-sized long tail nozzle shell, which comprises a socket main body 1 with a cavity, wherein eight semicircular splines uniformly distributed at the front end are used for connecting the nozzle shell to transmit torque, and two wrench handles are symmetrically welded at the rear end and used for applying torque. The utility model can meet the requirements of mounting, dismounting and reinforcing the long tail nozzle shell when the outer wall of the small long tail nozzle has no wrench groove and the mounting space in the radial direction is insufficient, and can realize the long tail nozzle shell to pass through the sleeve main body, thereby avoiding the damage to the shell in the process of loading and unloading.

In order to make the objects, features and advantages of the technical scheme of the present utility model more obvious and comprehensible, embodiments of the technical scheme of the present utility model will be described clearly and completely with reference to the accompanying drawings. It is obvious that the described embodiments are only some embodiments of the proposed solution, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present utility model.

The utility model designs a small-sized long tail nozzle socket wrench tool. FIG. 2 is a schematic view of a tool for a socket wrench, which is shown in FIG. 1, and is applied to a thin-wall nozzle housing structure in which a socket body is sleeved into a nozzle housing from a small end to a large end of the nozzle, and then the front end of the socket body is sleevedUniformly distributed convex keys are aligned with the back of the thread of the spray pipeAnd the key grooves are uniformly distributed, and after the key grooves are matched in place, the wrench handle is rotated to transfer torque, so that the installation, disassembly and reinforcement of a small-sized long tail spray pipe shell can be realized.

As shown in FIG. 2, the socket wrench tool consists of a socket main body 1,The wrench comprises a uniformly distributed convex key 2 and a wrench handle 3. The material of the sleeve main body 1 is D406A, and the nozzle casing can be sleeved in and bear torsion moment in principle, and the utility model does not limit the inner diameter and the outer diameter of the sleeve main body 1 and the height of the sleeve main body 1. FIG. 3 shows a schematic view of the structure of the male key, +.>Uniformly distributed convex key 2 and the back of the spray pipe thread>The uniformly distributed key grooves have the same shape, so that the situation that the socket spanner is slipped and separated from the spray pipe shell in the rotating process can be reduced. The convex key forms can be circular arcs or quadrangles, pentagons, hexagons and the like with angles, so that the modified structure capable of forming the transmission edges belongs to the protection scope of the patent. The spanner handle 3 is symmetrically welded on two sides of the sleeve body, and the welding position is not provided in the patentSpecific limitations are imposed.

The sleeve main body 1 is sleeved into the spray pipe shell from the small end of the spray pipe, and the front end of the sleeve main bodyUniformly distributed convex keys and the back of the thread of the spray pipe>The uniformly distributed key grooves are mutually connected after being aligned; the rear end of the sleeve main body is provided with two symmetrical wrench handles which are connected with the sleeve main body in a welding mode, and the installation, the disassembly and the reinforcement of the spray pipe shell are realized by driving the wrench handles.

Claims (4)

1. The utility model provides a small-size long tail pipe box spanner frock which characterized in that: the wrench tool consists of a sleeve main body (1),The novel wrench comprises a sleeve body (1), wherein the sleeve body is provided with a plurality of uniformly distributed convex keys (2) and wrench handles (3), the wrench handles (3) are symmetrically welded on two sides of the rear end of the sleeve body (1), and the sleeve body is provided with +.>The uniformly distributed convex keys (2) are arranged at the front end of the sleeve body (1).

2. The small nozzle box spanner tooling of claim 1, wherein: the sleeve main body (1) is made of D406A.

3. The small nozzle box spanner tooling of claim 1, wherein: the saidUniformly distributed convex keys (2) and the back side of the spray pipe thread>Uniformly distributed key grooves have the same shape, so that the socket wrench and the spray pipe shell are reducedBody slip separation.

4. The small nozzle box spanner tooling of claim 1, wherein: the convex key is in any one of circular arc, quadrangle, pentagon and hexagon.