CN211819715U

CN211819715U - Engine mandrel turning device

Info

Publication number: CN211819715U
Application number: CN202020044373.XU
Authority: CN
Inventors: 魏莎; 邓全胜; 靳伟; 陈鹏伟; 夏晨琛; 张雯; 张楠; 孙春蕾; 张明海; 张军
Original assignee: Xi'an North Huian Chemical Industries Co ltd
Current assignee: Xi'an North Huian Chemical Industries Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-10-30
Anticipated expiration: 2030-01-09

Abstract

The utility model relates to an engine mandrel turning device belongs to solid propellant technical field. Device simple structure, the commonality is strong, can realize not only having improved operation process's security to the upset of large-scale engine powder charge mandrel under the assistance of crane, has still reduced operating personnel's intensity of labour.

Description

Engine mandrel turning device

Technical Field

The utility model relates to an engine mandrel turning device belongs to solid propellant technical field.

Background

The production process of the engine charge comprises the procedures of manufacturing a heat insulating layer, manufacturing a side coating, assembling, pouring, curing, demoulding, shaping and the like, and during the assembling and demoulding, the core mould of the engine charge needs to be turned over, namely from a horizontal state to a vertical state or from the vertical state to the horizontal state. The overturning of the small engine charge core mold can be completed only by the help of manpower, and the overturning of the large engine charge core mold cannot be completed only by the help of manpower particularly for the core mold with the length of more than 3m and the weight of more than 1T, and simultaneously has great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an engine mandrel turning device adopts the device to assist the upset of accomplishing large-scale engine powder charge mandrel, has both reduced the manual operation, reduces safe risk again.

The purpose of the utility model is realized through the following technical scheme.

An engine core mold overturning device comprises a bottom plate, a roller, a bearing bracket, a bearing, a shaft, an adapter, a bolt and a nut;

a radial center hole is processed on the shaft, and the inner diameter of the center hole is smaller than the length of the bolt;

the adapter is of a hollow revolving body structure, the inner surface of one end of the adapter is processed with threads, the side wall of the other end of the adapter is processed with a through hole, and the outer diameter of the end processed with the threads is larger than the inner diameter of the central hole on the shaft;

the rollers are symmetrically arranged on the lower surface of the bottom plate to keep the gravity center balance and prevent the device from rolling over during movement; the bearing support is arranged on the upper surface of the bottom plate, the two bearings are oppositely arranged on the bearing support, and two ends of the shaft are respectively matched with the two bearings, so that the rotation of the shaft in the circumferential direction is realized; one end of the adapter is connected with the thread on the core mold, the other end of the adapter penetrates through the center hole of the shaft, and the bolt penetrates through the through hole in the side wall of the adapter and is fixed by the nut.

Furthermore, the bottom plate is square, four corners of the bottom plate are cut off, and the four rollers are symmetrically arranged at the four corners.

Has the advantages that:

device simple structure, the commonality is strong, can realize not only having improved operation process's security to the upset of large-scale engine powder charge mandrel under the assistance of crane, still reduced operating personnel's intensity of labour.

Drawings

Figure 1 is a front view of the device of an embodiment without an adapter installed.

Figure 2 is a top view of the device of an embodiment without an adapter.

Fig. 3 is a schematic structural diagram of the adapter in the embodiment.

Fig. 4 is a schematic view showing a process of turning over the core mold using the device described in the embodiment.

The device comprises a base plate 1, a roller 2, a bearing support 3, a bearing 4, a bearing cover 5, a shaft 6 and an adapter 7.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description.

Example 1

As shown in fig. 1, an engine core mold overturning device comprises a base plate 1, a roller 2, a bearing bracket 3, a bearing 4, a bearing cover 5, a shaft 6, an adapter 7, a bolt and a nut;

the bottom plate of the bottom plate 1 is square, and four corners of the bottom plate are cut off as shown in fig. 2;

the bearing bracket 3 is of a U-shaped structure, and mounting grooves for mounting the bearing 4 are correspondingly processed on two parallel side surfaces;

a radial center hole is processed on the shaft 6, and the inner diameter of the center hole is smaller than the length of the bolt;

the adapter 7 is a hollow revolving body structure, a thread is processed on the inner surface of one end, a through hole is processed on the side wall of the other end, and the outer diameter of the end with the thread processed is larger than the inner diameter of the central hole on the shaft, as shown in fig. 3;

the four rollers 2 are symmetrically arranged at four corners of the lower surface of the bottom plate 1 to keep the center of gravity balance and prevent the device from turning over during movement; the bearing support 3 is fixedly arranged at the center of the upper surface of the bottom plate 1, the two bearings 4 are arranged in the mounting grooves of the bearing support 3 and are fixed through the bearing cover 5, and the two ends of the shaft 6 are respectively matched with the two bearings 4 arranged on the bearing support 3, so that the rotation of the shaft 6 in the circumferential direction is realized; one end of the adapter 7 is connected with the thread on the core mould, the other end of the adapter 7 penetrates through the center hole of the shaft 6, and the bolt penetrates through the side wall of the adapter 7 and is fixed by a nut.

For the mandrel with the external diameter phi 378mm, the length 4321mm and the weight of 1.7T, the operation of turning over by using the device of the embodiment is as follows:

before the core mould is turned, the adapter 7 is connected to the head of the core mould, the direction of the roller 2 is adjusted, an operator leaves the site, the crane is connected with the tail of the core mould and hoisted or lowered by the crane, the device moves rightwards or leftwards, when the core mould is turned to be in a vertical or horizontal state, the operator enters the site to separate the adapter 7 from the core mould, and then the turning of the core mould is completed, as shown in fig. 4.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an engine mandrel turning device which characterized in that: the device comprises a bottom plate (1), a roller (2), a bearing bracket (3), a bearing (4), a shaft (5), an adapter (7), a bolt and a nut;

a radial center hole is processed on the shaft (5), and the inner diameter of the center hole is smaller than the length of the bolt;

the adapter (7) is of a hollow revolving body structure, the inner surface of one end of the adapter is processed with threads, the side wall of the other end of the adapter is processed with a through hole, and the outer diameter of the end processed with the threads is larger than the inner diameter of a central hole in the shaft (5);

gyro wheel (2) symmetry is installed at bottom plate (1) lower surface, and install at bottom plate (1) upper surface bearing holder (3), and install relatively on bearing holder (3) two bearings (4), and the both ends of axle (5) cooperate with two bearings (4) respectively, the threaded connection on one end and the mandrel of adapter (7), and the other end of adapter (7) passes the centre bore of axle (5), and the bolt passes the through hole on adapter (7) lateral wall and fixes with the nut.

2. The engine core mold turning device according to claim 1, characterized in that: the bottom plate (1) is square, four corners of the bottom plate are cut off, and the four rollers (2) are symmetrically arranged at the four corners.