CN218802033U

CN218802033U - Tool for disassembling and assembling threaded sleeve of small-space deep hole

Info

Publication number: CN218802033U
Application number: CN202223167093.6U
Authority: CN
Inventors: 杨贵春; 吕俊杰; 杨志强; 张建宇; 章详宝; 董博
Original assignee: Shanxi Diesel Engine Industries Co Ltd
Current assignee: Shanxi Diesel Engine Industries Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-07
Anticipated expiration: 2032-11-29

Abstract

The invention provides a tool for dismounting a threaded sleeve of a deep hole in a small space, which comprises a tool operating rod, wherein one side of the tool operating rod is provided with a working end, the other side of the tool operating rod is provided with an operating end, the working end and the operating end are both provided with external thread structures, and the length of the external thread structure of the operating end is greater than that of the working end; the operating end is provided with a screwing operating unit and a pre-tightening operating unit; the screwing operation unit comprises a base piece arranged at the operation end, and a dismounting operation handle is arranged on the base piece; the pre-tightening operation unit comprises a bushing sleeved on the tool operating rod, one side of the bushing, which is positioned at the operating end, is provided with a connecting cylinder, and a pre-tightening operation handle is arranged on the connecting cylinder. The invention ensures that the threaded sleeve and the tool are firmly combined by applying axial pressure to the threaded sleeve by screwing the connecting cylinder in a deep hole in a narrow space, can fully apply force to the threaded sleeve when mounting and dismounting the threaded sleeve, is quick and efficient to dismount and replace the threaded sleeve, has high reliability and reduces the labor intensity of an operator.

Description

Tool for disassembling and assembling threaded sleeve of small-space deep hole

Technical Field

The invention belongs to the technical field of machining and assembling, and particularly relates to a tool for dismounting a threaded sleeve of a deep hole in a small space.

Background

Because aluminum alloy materials are easy to damage threads after being loaded and unloaded for many times, thread sleeves are often installed in various thread bottom holes in the mechanical field to prolong the service life. The traditional high-power diesel upper crankcase is made of aluminum alloy materials, and needs to be disassembled and assembled for many times in the maintenance process in the life cycle, so that a threaded sleeve needs to be installed in a bolt hole connected with a cylinder cover on the upper crankcase. Because the structural design of cylinder head bolt hole is comparatively special, its screw bottom hole screw portion and unthreaded hole portion divide into the stair structure, and the narrow and small unthreaded hole diameter in space is only 0.3mm bigger than the internal thread path, causes the dismouting thread bush all to be more difficult, during the installation, ensures that the screw thread suit to the bolt hole bottom to the thread bush usually will with screw bottom hole interference fit, in order to ensure when later stage repeatedly handling cylinder head bolt, the thread bush position is motionless, consequently, needs to design a dedicated mounting tool.

Disclosure of Invention

In view of this, the invention provides a tool for dismounting and mounting a threaded sleeve in a small-space deep hole, aiming at overcoming the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a tool for dismounting a threaded sleeve from a deep hole in a small space comprises a tool operating rod, wherein one side of the tool operating rod is provided with a working end, the other side of the tool operating rod is provided with an operating end, the working end and the operating end are both provided with external thread structures, and the length of the external thread structure of the operating end is greater than that of the external thread structure of the working end;

the operating end is provided with a screwing operating unit and a pre-tightening operating unit; the screwing operation unit comprises a base piece arranged at the operation end, and a dismounting operation handle is arranged on the base piece;

the pre-tightening operation unit comprises a bushing sleeved on the tool operating rod, a connecting cylinder is arranged on one side, located at the operating end, of the bushing, a thrust end face is arranged on one side, facing the working end, of the bushing, the connecting cylinder is in threaded connection with the working end, and a pre-tightening operation handle is arranged on the connecting cylinder.

Further, the connecting cylinder and the lining are of an integrated structure.

Further, the base member is threadedly mounted to the operating end.

Further, the disassembling and assembling operation handle is detachably arranged on the base piece.

Furthermore, the disassembling operation handle is provided with a connecting thread section, and the connecting thread section is screwed with a connecting hole arranged on the base piece.

Further, the connection hole is perpendicular to the tool lever.

Furthermore, a locking nut is screwed and installed on the part of the connecting thread section exposed out of the connecting hole.

Furthermore, the surfaces of the disassembly and assembly operating handle and the pre-tightening operating handle are both subjected to knurling treatment, or the surfaces of the disassembly and assembly operating handle and the pre-tightening operating handle are both provided with anti-skid grains.

Further, the outer surface of the base part is of a polygonal prism structure.

Compared with the prior art, the invention has the following advantages:

the tool is simple in structure and reasonable in design, the bushing applies axial pressure to the threaded sleeve by screwing the connecting cylinder in the deep hole in a narrow space, so that the threaded sleeve is firmly combined with the tool, the threaded sleeve can be fully applied with force when being mounted and dismounted, the threaded sleeve is fast and efficient to dismount and replace, the reliability is high, the labor intensity of an operator is reduced, the device can well meet the requirement of mounting the threaded sleeve in the deep hole in the narrow space through practical application, and a better effect is achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of the invention in application;

FIG. 3 is a schematic structural diagram of a part of a pretensioning operation unit in the invention;

fig. 4 is a schematic structural diagram of a screwing operation unit part in the invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are merely for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A tool for disassembling and assembling a threaded sleeve in a small-space deep hole is shown in figures 1 to 4 and comprises a tool operating rod 1, wherein a working end 2 is arranged on one side of the tool operating rod, an operating end 3 is arranged on the other side of the tool operating rod, the working end and the operating end are both provided with external thread structures, and the length of the external thread structure of the operating end is greater than that of the external thread structure of the working end; a screwing operation unit 4 and a pre-tightening operation unit 5 are arranged at the operation end; the screwing operation unit comprises a base member 6 mounted on the operation end, and a disassembling operation handle 7 is arranged on the base member. Generally, two dismounting operation handles are symmetrically arranged on the base part so as to facilitate force application operation.

The pre-tightening operation unit comprises a bushing 8 sleeved on the tool operating rod, a connecting cylinder 9 is arranged on one side, located at the operating end, of the bushing, an anti-thrust end face 10 is arranged on one side, facing the working end, of the bushing, the connecting cylinder is in threaded connection with the working end, and a pre-tightening operation handle 11 is arranged on the connecting cylinder. The pre-tightening operation unit is arranged at one side close to the working end, namely, the thrust end face of the pre-tightening operation unit bushing can abut against the end face of the threaded sleeve 12 to be disassembled and assembled. Typically, the connector barrel and the bushing may be of a split construction, and in an alternative embodiment, the connector barrel and the bushing are integrally formed such that when the connector barrel is screwed by the pre-tightening handle, the bushing rotates with the connector barrel to exert a compressive force on the end face of the threaded bushing.

Usually, the base member is screw-mounted to the operating end, and the detachable operating handle is detachably mounted to the base member. By way of example, the removal lever is provided with a connecting thread section which is screwed into a connecting hole provided in the base member. In an alternative embodiment, the connecting hole is a through hole, the end of the connecting thread section extending into the inner side of the base member is inserted into a matching groove of a tool operating handle (arranged on the operating end) to play a role of preventing looseness, and the structural design is that no matter the dismounting operating handle is used for driving the base member to rotate clockwise or anticlockwise, the base member cannot be separated from the tool operating handle.

Preferably, the connecting hole perpendicular to instrument action bars, promptly, dismouting action bars perpendicular to instrument action bars, simultaneously, the equal annular knurl in dismouting action bars and pretension action bars surface is handled, or both surfaces all are equipped with anti-skidding line, and the application of force is convenient, laborsaving easy operation. In order to improve the connection reliability, a locking nut 13 is screwed and installed at the part, exposed out of the connecting thread section, of the connecting hole, and when the dismounting operating handle is screwed and connected with the connecting hole through the connecting thread section, the locking nut is screwed and locked.

The outer surface of the basic part is in a polygon prism structure. Of course, in an alternative embodiment, the base member may be an outer hexagonal nut, and the side wall of the outer hexagonal nut is symmetrically provided with connecting holes for installing the disassembling and assembling operation handle, so that the screwing operation unit can be manufactured.

When the threaded sleeve device is installed, the pressing operation unit (connecting cylinder) rotates anticlockwise, the bushing moves towards one side far away from the working end along with the connecting cylinder, the threaded sleeve is screwed and installed at the working end, the threaded sleeve rotates to the position about three quarters of the total length of the thread section of the working end approximately, and then the connecting cylinder rotates clockwise, so that the bushing moves towards the working end and presses the threaded sleeve.

Insert the mounting hole of crankcase cylinder head with instrument action bars work end (together with the threaded bush of twisting on the working section) to twist instrument action bars with the help of dismouting operation handle, twist the threaded bush in crankcase cylinder head screw bottom hole, after twisting to the bottom, use torque wrench through the polygon prism structure (for example with the basic member cooperation of torque wrench head and outer hexagon nut structure) with the help of the basic member outside, realize the operation of twisting to the basic member, and then exert fixed torque to the threaded bush. And (3) after the threaded sleeve is pre-tightened, the tool integrally and fixedly rotates and loosens the connecting cylinder anticlockwise to remove the axial pressure between the bushing and the threaded sleeve, and then the tool operating rod is rotated anticlockwise to separate the tool from the threaded sleeve and withdraw.

When the threaded sleeve is disassembled, the connecting cylinder is rotated anticlockwise, so that the lining moves towards one side far away from the working end, and the lining does not hinder the connection between the working end and the threaded sleeve. Then the working end of the tool operating rod is screwed into the threaded sleeve, after the working end is screwed into the bottom, the connecting cylinder is screwed down by clockwise rotation through the pre-tightening operating handle, the threaded sleeve is pressed through the bushing, and then the tool operating rod is rotated counterclockwise (or the tool operating rod can be screwed out through the base part by an electric wrench) through the disassembling and assembling operating handle, so that the tool operating rod is screwed out. And after the threaded sleeve is screwed out, the connecting cylinder is loosened, and the threaded sleeve is dismounted from the working end of the tool.

The tool has the advantages that the structure is simple, the design is reasonable, in a deep hole in a narrow space, the connecting cylinder is screwed to enable the bushing to apply axial pressure to the threaded sleeve, the threaded sleeve is firmly combined with the tool, when the threaded sleeve is installed and disassembled, force can be fully applied to the threaded sleeve, the threaded sleeve is quickly and efficiently disassembled and replaced, the reliability is high, the labor intensity of an operator is reduced, the device can well meet the requirement of installing the threaded sleeve in the deep hole in the narrow space through practical application, and a better effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a little space deep hole dismouting thread bush's instrument which characterized in that: the tool operating rod is provided with a working end on one side and an operating end on the other side, and the working end and the operating end are both provided with external thread structures;

a screwing operation unit and a pre-tightening operation unit are arranged at the operation end; the screwing operation unit comprises a base piece arranged at the operation end, and a dismounting operation handle is arranged on the base piece;

2. The tool for dismounting the thread bushing from the small-space deep hole according to claim 1, characterized in that: the connecting cylinder and the lining are of an integral structure.

3. The tool for dismounting the thread bushing from the small-space deep hole according to claim 1, characterized in that: the base member is threadedly mounted to the operating end.

4. The tool for dismounting the threaded sleeve of the small-space deep hole according to claim 1, is characterized in that: the dismounting operation handle is detachably arranged on the base piece.

5. The tool for dismounting the threaded sleeve of the small-space deep hole according to claim 4, wherein: and the dismounting operating handle is provided with a connecting thread section which is screwed with a connecting hole arranged on the base piece.

6. The tool for dismounting the thread bushing from the small-space deep hole according to claim 5, characterized in that: the connecting hole is perpendicular to the tool operating lever.

7. The tool for dismounting the threaded sleeve of the small-space deep hole according to claim 5, wherein: and a locking nut is screwed and installed on the part of the connecting thread section exposed out of the connecting hole.

8. The tool for dismounting the threaded sleeve of the small-space deep hole according to claim 1, is characterized in that: the surfaces of the dismounting operating handle and the pre-tightening operating handle are knurled, or anti-skid grains are arranged on the surfaces of the dismounting operating handle and the pre-tightening operating handle.

9. The tool for dismounting the thread bushing from the small-space deep hole according to claim 1, characterized in that: the outer surface of the base part is of a polygonal prism structure.