CN211439723U - Nuclear power overhauls with outer hexagonal spanner of quick change head - Google Patents

Abstract

The utility model discloses a quick-change head outer hexagon wrench for nuclear power maintenance, comprising a wrench handle, a wrench head, a replaceable wrench chuck, and a wrench chuck fixing device. One end of the wrench handle is provided with a wrench head, the inner center of the wrench head is provided with a wrench chuck installation cavity that can be matched with the replaceable wrench chuck, and the replaceable wrench chuck is arranged in the wrench chuck installation cavity , the replaceable wrench chuck is detachably connected with the wrench chuck installation cavity, and the replaceable wrench chuck is a regular hexagonal cylinder or a regular quadrilateral cylinder. In the head installation cavity, a replaceable wrench head can be detachably arranged in the wrench clamp head installation cavity, and different types of wrench clamp heads can be freely replaced according to the bolt type, which is more convenient to use, not easy to damage the bolts, and more convenient to carry.

Description

A quick-change head hexagon wrench for nuclear power overhaul

【Technical field】

The utility model relates to the technical field of nuclear power maintenance tools, in particular to the technical field of a quick-change head external hexagon wrench for nuclear power maintenance.

【Background technique】

There are many types of tools needed for nuclear power maintenance. General tools such as pliers, wrenches, and screwdrivers can be used. However, due to the particularity of nuclear power, some highly targeted maintenance tools are needed to improve maintenance efficiency. Complete maintenance work efficiently. Hexagonal wrench is an indispensable tool for nuclear power maintenance. Hexagonal wrench is divided into fixed wrench and adjustable wrench. Ordinary hexagonal wrench can only be used to twist the type of bolt that matches the wrench model. Different types of bolts require There are many different types of wrenches, and although the live wrench can screw various types of bolts, its live opening needs to be screwed by hand to control the size, which is inconvenient to use, and the live opening of the live wrench has a large gap, which can easily cause damage to the bolt head if used improperly. .

【Content of utility model】

The purpose of the utility model is to solve the problems in the prior art, and proposes a quick-change head hex wrench for nuclear power overhaul, which can freely replace different types of wrench chucks according to the bolt type, is more convenient to use, is not easy to damage the bolts, and is easy to carry. more convenient.

In order to achieve the above purpose, the utility model proposes a quick-change external hexagon wrench for nuclear power overhaul, which includes a wrench handle, a wrench head, a replaceable wrench chuck, and a wrench chuck fixing device, and the wrench handle is a long bar. Type, one end of the wrench handle is provided with a wrench head, the inner center of the wrench head is provided with a wrench chuck installation cavity that can be matched with the replaceable wrench chuck, and the replaceable wrench chuck is arranged on the wrench In the chuck installation cavity, the replaceable wrench chuck is detachably connected with the wrench chuck installation cavity, the replaceable wrench chuck is a regular hexagonal cylinder or a regular quadrilateral cylinder, and the replaceable wrench The inner center of the clamp head is provided with a screw head clamping cavity that can be matched with the outer hexagon bolt, and the wrench clamp head installation cavity is also provided with a number of wrench clamp head fixing devices, and the wrench clamp head fixing device can be used with a replaceable wrench. Card matching.

Preferably, the upper end of the replaceable wrench chuck is provided with an annular limit rib, and the installation cavity of the wrench chuck is provided with a limit rib slot that can cooperate with the annular limit rib.

Preferably, the wrench chuck fixing device includes a steel ball body and a spring, and a plurality of wrench chuck fixing device installation cavities are laterally arranged in the wrench head that can cooperate with the wrench chuck fixing device. The opening of the installation cavity of the head fixing device is arranged toward the installation cavity of the wrench chuck and communicated with the installation cavity of the wrench chuck. The installation cavity of the wrench chuck fixing device is provided with a spring, and the opening of the installation cavity of the wrench chuck fixing device is located at the opening. There is a steel ball body, the spring is connected with the steel ball body, the inner diameter of the installation cavity of the wrench chuck fixing device is slightly larger than the diameter of the steel ball body, and the diameter of the opening of the installation cavity of the wrench chuck fixing device is slightly larger. The diameter of the steel ball body is smaller than the diameter of the steel ball body, and the opening of the installation cavity of the wrench chuck fixing device limits the steel ball body in the installation cavity of the wrench chuck fixing device.

Preferably, the side wall of the replaceable wrench chuck is provided with a groove that can be matched with the steel ball body.

The utility model has the beneficial effects of a quick-change external hexagon wrench for nuclear power maintenance: the utility model provides a wrench chuck installation cavity on the wrench head, and a replaceable wrench chuck is detachably arranged in the wrench chuck installation cavity. Different types of wrench chucks can be freely replaced according to the bolt type, which is more convenient to use, not easy to damage the bolts, and more convenient to carry.

The features and advantages of the present invention will be described in detail through the embodiments in conjunction with the accompanying drawings.

【Description of drawings】

1 is a schematic top view of the structure of a quick-change head hexagon wrench for nuclear power overhaul of the present invention;

2 is a side view sectional view of a quick-change head hex wrench for nuclear power overhaul of the present invention;

Fig. 3 is the sectional view of A-A part among Fig. 1;

FIG. 4 is a schematic bottom view of the structure of a replaceable wrench chuck.

In the picture: 1- wrench handle, 2- wrench head, 3-replaceable wrench chuck, 4- wrench chuck fixing device, 21- wrench chuck installation cavity, 22- wrench chuck fixing device installation cavity, 31- Ring limit rib, 32-screw head cavity, 33-groove, 41-steel ball body, 42-spring.

【Detailed ways】

Referring to Figure 1, Figure 2, Figure 3 and Figure 4, the utility model is a quick-change head hex wrench for nuclear power overhaul, comprising a wrench handle 1, a wrench head 2, a replaceable wrench chuck 3, and a wrench chuck fixing device 4. The wrench handle 1 is a long strip, and one end of the wrench handle 1 is provided with a wrench head 2, and the inner center of the wrench head 2 is provided with a wrench clamp that can be matched with the replaceable wrench clamp 3. head installation cavity 21, the replaceable wrench chuck 3 is arranged in the wrench chuck installation cavity 21, the replaceable wrench chuck 3 is detachably connected with the wrench chuck installation cavity 21, the replaceable wrench The clamp head 3 is a regular hexagonal cylinder or a regular quadrilateral cylinder. The inner center of the replaceable wrench clamp head 3 is provided with a screw head clamping cavity 32 that can be matched with an outer hexagonal bolt. The wrench clamp head installation cavity 21 There are also a number of wrench chuck fixing devices 4 inside. The wrench chuck fixing device 4 can cooperate with the replaceable wrench chuck 3. The upper end of the replaceable wrench chuck 3 is provided with an annular limit rib 31. The wrench chuck mounting cavity 21 is provided with a limit rib slot 211 that can cooperate with the annular limit rib 31. The wrench chuck fixing device 4 includes a steel ball body 41 and a spring 42. The wrench head 2 is laterally provided with a plurality of wrench chuck fixing device mounting cavities 22 that can be matched with the wrench chuck fixing device 4. The opening of the wrench chuck fixing device mounting cavity 22 is disposed toward the wrench chuck mounting cavity 21 and is arranged in the same direction. It is communicated with the wrench chuck installation cavity 21, the wrench chuck fixing device installation cavity 22 is provided with a spring 42, the opening of the wrench chuck fixing device installation cavity 22 is provided with a steel ball 41, and the spring 42 The inner diameter of the mounting cavity 22 of the wrench chuck fixing device is slightly larger than the diameter of the steel ball body 41, and the diameter of the opening of the mounting cavity 22 of the wrench chuck fixing device is slightly smaller than that of the steel ball body 41. Diameter, the opening of the installation cavity 22 of the wrench chuck fixing device limits the steel ball 41 in the installation cavity 22 of the wrench chuck fixing device, and the side wall of the replaceable wrench chuck 3 is provided with the steel ball 41 that can be connected with the steel ball 41. Matching grooves 33 .

The working process of the utility model:

In the working process of the quick-change head hexagonal wrench of the utility model for nuclear power maintenance, a replaceable wrench chuck 3 with a suitable type of screw head clamping cavity 32 is automatically selected according to the bolt type, and the replaceable wrench chuck 3 is put into the wrench chuck. In the head installation cavity 21, the annular limit rib 31 cooperates with the limit rib slot 211, the side wall of the replaceable wrench chuck 3 and the wrench chuck installation cavity 21 limit the replaceable wrench chuck 3, and the wrench clamp The spring 42 of the head fixing device 4 drives the steel ball 41 to be inserted into the groove 33 of the side wall of the replaceable wrench chuck 3, and the replaceable wrench chuck 3 is fixed, and the wrench can be used to turn the bolt.

The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims (4)

1. The utility model provides a nuclear power overhauls with outer hexagonal spanner of quick change head which characterized in that: comprises a wrench handle (1), a wrench head (2), a replaceable wrench chuck (3) and a wrench chuck fixing device (4), wherein the wrench handle (1) is in a strip shape, the wrench head (2) is arranged at one end of the wrench handle (1), a wrench chuck mounting cavity (21) capable of being matched with the replaceable wrench chuck (3) is arranged at the center inside the wrench head (2), the replaceable wrench chuck (3) is arranged in the wrench chuck mounting cavity (21), the replaceable wrench chuck (3) is detachably connected with the wrench chuck mounting cavity (21), the replaceable wrench chuck (3) is a regular hexagonal cylinder or a regular quadrilateral cylinder, a screw chuck cavity (32) capable of being matched with an outer hexagonal bolt is arranged at the center inside the replaceable wrench chuck (3), and a plurality of wrench chuck fixing devices (4) are further arranged in the wrench chuck mounting cavity (21), the wrench chuck fixing device (4) can be matched with the replaceable wrench chuck (3).

2. The quick head-changing outer hexagonal wrench for nuclear power overhaul of claim 1 is characterized in that: the upper end of the replaceable wrench clamping head (3) is provided with an annular limiting flange (31), and a limiting flange clamping groove (211) which can be matched with the annular limiting flange (31) is arranged in the wrench clamping head mounting cavity (21).

3. The quick head-changing outer hexagonal wrench for nuclear power overhaul of claim 1 is characterized in that: spanner dop fixing device (4) include the steel ball body (41), spring (42), spanner head (2) in transversely be equipped with a plurality of can with spanner dop fixing device (4) complex spanner dop fixing device installation cavity (22), spanner dop fixing device installation cavity (22) the opening towards spanner dop installation cavity (21) setting and communicate with spanner dop installation cavity (21), spanner dop fixing device installation cavity (22) in be equipped with spring (42), spanner dop fixing device installation cavity (22) opening part be equipped with steel ball body (41), spring (42) be connected with steel ball body (41) cooperation, spanner dop fixing device installation cavity (22) inside diameter slightly be greater than the diameter of steel ball body (41), spanner dop fixing device installation cavity (22) opening part diameter slightly be less than the diameter of steel ball body (41), the opening of the wrench chuck fixing device mounting cavity (22) limits the steel ball body (41) in the wrench chuck fixing device mounting cavity (22).

4. The quick head-changing outer hexagonal wrench for nuclear power overhaul according to claim 3, characterized in that: the side wall of the replaceable wrench chuck (3) is provided with a groove (33) which can be matched with the steel ball body (41).

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