CN214213648U

CN214213648U - Tool assembly for dismounting and mounting small-diameter cylinder sleeve in blind hole

Info

Publication number: CN214213648U
Application number: CN202023308373.5U
Authority: CN
Inventors: 顾建戴; 朱蓉洁; 张振中
Original assignee: Jiangsu Wuxi Mineral Exploration Machinery General Factory Co Ltd
Current assignee: Jiangsu Wuxi Mineral Exploration Machinery General Factory Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-17
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a tool assembly for disassembling a small-diameter cylinder sleeve installed in a blind hole, which comprises a cylinder body, wherein the cavity of the cylinder body is the blind hole, and the cylinder sleeve is embedded in the cylinder body; a cavity is arranged in the cylinder sleeve, and the inner diameter of the cavity is larger than that of the cylinder sleeve; the expansion block is arranged on the outer side of the expansion block; an internal thread sleeve is arranged at the inner end of the cylinder sleeve, an expansion block is arranged in the cavity, and the expansion block props against the internal thread sleeve; the inner end of the screw penetrates through the center of the expansion block and is in threaded connection with the internal thread sleeve, and the screw expands the expansion block so as to hang the cavity; the outer end of the screw rod is sleeved with the protecting cover and fixed through the nut. The utility model discloses can effectively solve and install the minor diameter cylinder liner in the blind hole, because of the unable dismantlement problem that uses of conventional tool.

Description

Tool assembly for dismounting and mounting small-diameter cylinder sleeve in blind hole

Technical Field

The utility model relates to a tool assembly for dismounting and installing the minor diameter cylinder liner in the blind hole belongs to machining technical field.

Background

With the development of machining technology, various traditional mechanical parts tend to be miniaturized or even miniaturized. The structure of inlaying the cylinder liner that originally uses extensively has the instrument that the standard five metals was dismantled, is applied to tearing open, adorning of cylinder liner specially. However, the standard disassembling tool has a certain application range, and the diameter specification of the disassembled cylinder sleeve is also limited. But as the size of the part gets smaller and smaller, standard removal tools are not practical. In the actual production and manufacturing process, a plurality of cylinder sleeves installed in the blind holes need to be installed and disassembled.

Disclosure of Invention

An object of the utility model is to overcome exist not enough among the prior art, provide a tool assembly for dismantling the minor diameter cylinder liner of installing in the blind hole, it can effectively solve the minor diameter cylinder liner of installing in the blind hole, because of the unable dismantlement problem that uses of conventional tool.

According to the utility model provides a technical scheme: a tool assembly for disassembling a small-diameter cylinder sleeve installed in a blind hole comprises a cylinder body, wherein a cavity of the cylinder body is the blind hole, and the cylinder sleeve is embedded in the cylinder body; a cavity is arranged in the cylinder sleeve, and the inner diameter of the cavity is larger than that of the cylinder sleeve; the expansion block is arranged on the outer side of the expansion block; an internal thread sleeve is arranged at the inner end of the cylinder sleeve, an expansion block is arranged in the cavity, and the expansion block props against the internal thread sleeve; the inner end of the screw penetrates through the center of the expansion block and is in threaded connection with the internal thread sleeve, and the screw expands the expansion block so as to hang the cavity; the outer end of the screw rod is sleeved with the protecting cover and fixed through the nut.

Furthermore, the expansion block is composed of two semicircular expansion pieces, and the central arcs of the expansion pieces are concave.

Further, when the expansion block contracts, the outer diameter of the expansion block is smaller than the inner diameter of the cylinder sleeve, and the inner diameter of the expansion block is smaller than the diameter of the screw.

Further, the inner diameter of the cylinder sleeve is less than or equal to 40 mm.

Further, the nut is an outer hexagonal nut.

Compared with the prior art, the utility model, have following advantage:

the problem of the unable dismantlement that uses of conventional instrument because of installing the minor diameter cylinder liner in the blind hole has effectively been solved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the structure of a cylinder liner.

Fig. 3 is a structural schematic diagram of the expansion block in a contracted state.

Fig. 4 is a structural schematic diagram of the expansion block in an opened state.

Description of reference numerals: 1-cylinder body, 2-cylinder sleeve, 201-cavity, 3-internal thread sleeve, 4-expansion block, 401-expansion sheet, 5-screw, 6-protecting cover and 7-external hexagonal nut.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a tool assembly for disassembling a small-diameter cylinder sleeve installed in a blind hole comprises a cylinder body 1, wherein a cavity of the cylinder body 1 is the blind hole, a cylinder sleeve 2 is embedded in the cylinder body 1, and the inner diameter of the cylinder sleeve 2 is less than or equal to 40 mm; a cavity 201 is arranged in the cylinder sleeve 2, and the inner diameter of the cavity 201 is larger than that of the cylinder sleeve 2; the expansion block is characterized by also comprising an internal thread sleeve 3, an expansion block 4, a screw rod 5, a protecting cover 6 and a nut 7; the inner end of the cylinder sleeve 2 is provided with an internal thread sleeve 3, an expansion block 4 is arranged in the cavity 201, and the expansion block 4 props against the internal thread sleeve 3; the inner end of the screw rod 5 penetrates through the center of the expansion block 4 and is in threaded connection with the internal thread sleeve 3, and the screw rod 5 enables the expansion block 4 to expand so as to hang the cavity 201; the outer end of the screw rod 5 is sleeved with the protecting cover 6 and fixed through the nut 7, and the nut 7 is an outer hexagon nut.

The expansion block 4 is composed of two semicircular expansion pieces 401, and the central arcs of the expansion pieces 401 are concave.

When the expansion block 4 is contracted, the outer diameter of the expansion block 4 is smaller than the inner diameter of the cylinder sleeve 2, and the inner diameter of the expansion block 4 is smaller than the diameter of the screw rod 5.

The working principle is as follows: as shown in fig. 1 to 4, the cylinder liner 2 needs to be embedded in the cylinder body 1 due to the requirement of the product structure, and the cylinder liner 2 cannot be detached after the cylinder liner 2 is installed in the cylinder body 1 because the cavity of the cylinder body 1 in which the cylinder liner 2 is embedded is a blind hole. And the shape size phi A of the cylinder sleeve 2 is less than or equal to 40mm, so that a standard tool cannot be used. Firstly, the internal thread sleeve 3 is put into the cylinder sleeve 2, then the expansion block 4 is put into the cylinder sleeve 2, and then one end of the screw rod 5 is screwed into the thread hole of the internal thread sleeve 3. The expansion block 4 is composed of two pieces, the shape is shown in fig. 3, the size phi C of the expansion block 4 is slightly smaller than the size phi A of the cylinder sleeve 2, so that the expansion block 4 can smoothly pass through the cylinder sleeve 2 and reach the cavity 201 where the size phi B of the cylinder sleeve 2 is located. And the size phi D of the expansion block 4 is smaller than the diameter of the screw rod 5, when the screw rod 5 is screwed into the threaded hole of the internal thread sleeve 3, the shape phi C of the expansion block 4 is larger than the size phi A of the cylinder sleeve 2, and the outer edge of the expansion block 4 is hung on a cavity where the size phi B of the cylinder sleeve 2 is located. Then the protecting cover 6 is sleeved in sequence, and the outer hexagonal nut 7 is screwed on the thread at the other end of the screw rod 5. And screwing the outer hexagon nut 7, and pulling the screw rod 5, the internal thread sleeve 3 and the expansion block 4 out of the cylinder body 1 together with the cylinder sleeve 2.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A tool assembly for disassembling a small-diameter cylinder sleeve installed in a blind hole comprises a cylinder body (1), wherein a cavity of the cylinder body (1) is the blind hole, and a cylinder sleeve (2) is embedded in the cylinder body (1); a cavity (201) is arranged in the cylinder sleeve (2), and the inner diameter of the cavity (201) is larger than that of the cylinder sleeve (2); the expansion block is characterized by further comprising an internal thread sleeve (3), an expansion block (4), a screw (5), a protective cover (6) and a nut (7); an internal thread sleeve (3) is arranged at the inner end of the cylinder sleeve (2), an expansion block (4) is arranged in the cavity (201), and the expansion block (4) props against the internal thread sleeve (3); the inner end of the screw rod (5) penetrates through the center of the expansion block (4) and is in threaded connection with the internal thread sleeve (3), and the expansion block (4) is expanded by the screw rod (5) so as to hang the cavity (201); the outer end of the screw rod (5) is sleeved with a protecting cover (6) and fixed through a nut (7).

2. A tool assembly for dismounting a small diameter cylinder liner installed in a blind bore according to claim 1, characterized in that the expansion block (4) consists of two semicircular expansion pieces (401), the central arc of the expansion pieces (401) being concave.

3. A tool assembly for dismounting a small diameter cylinder liner installed in a blind bore according to claim 2, characterized in that when the expansion block (4) is contracted, the outer diameter of the expansion block (4) is smaller than the inner diameter of the cylinder liner (2), and the inner diameter of the expansion block (4) is smaller than the diameter of the screw (5).

4. A tool assembly for dismounting a small diameter cylinder liner mounted in a blind bore according to claim 1, characterized in that the inner diameter of the cylinder liner (2) is equal to or less than 40 mm.

5. A tool assembly for dismounting a small diameter cylinder liner installed in a blind bore according to claim 1, characterized in that the nut (7) is an outer hexagonal nut.