CN203125402U - Tool for mounting and dismounting round nut - Google Patents

Abstract

The utility model discloses a tool for mounting and dismounting a round nut. The tool comprises a tool body, one end of the tool body is a handle part, and the other end of the tool body is an end part. The end part is provided with a round-hole-shaped bayonet matched with the round nut. A plurality of erect pin heads are arranged on the lower end face of the end part. The tool for mounting and dismounting the round nut is simple and reasonable in structure, convenient to process, convenient and quick in use, capable of shortening time for mounting and dismounting the round nut, and lightening labor intensity of staff, firm in structure, and capable of preventing damage of the round nut.

Description

A special tool for installing and dismounting round nuts

technical field

The utility model relates to a nut removal tool, in particular to a special tool for installing and removing round nuts on a press machine.

Background technique

In the machinery factory, many large-scale presses need to be used. There are many round nuts on the structure of the press. The round nuts are shown in Figure 3. The shape is a stepped cylindrical boss, including a large cylinder 5 and a small cylinder 6. The small cylinder 6 is arranged on the large cylinder 5, and an annular stepped surface is formed on the large cylinder 5, and a plurality of blind holes are formed on the stepped surface. In the process of equipment maintenance, it is sometimes necessary to disassemble the round nut, but in the process of disassembling the round nut, since there is no special disassembly wrench, the nut can only be beaten with a hammer and a punch. After loosening, it can be disassembled. On the contrary, this method can only be used to tighten the round nut parts during installation. The workload is heavy, and the operation is extremely difficult and wastes manpower and material resources and takes a long time to complete. , and easy to damage the nut.

The Chinese patent application number 200920228818.3 discloses a round nut. The round nut at least includes an inner hole provided with threads. A split groove is opened between the small cylindrical surface and a blind hole and a screw hole are arranged on the end surface of the round nut. Such round nuts are also difficult to remove.

Contents of the invention

The utility model mainly provides a special tool for installing and dismounting round nuts, which effectively solves technical problems such as extremely difficult operation, time-consuming and labor-consuming, and easy damage to round nuts when disassembling and installing round nuts.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: it includes a body, one end of the body is a handle portion, the other end of the body is a head portion, and the end portion is provided with a round nut The matching circular hole-shaped bayonet socket is provided with several upright pin heads on the lower surface of the end portion. The bayonet of the end of the utility model is used to socket the round nut; the function of the pin head of the utility model is that when the round nut is disassembled, the pin head is stored in the hole on the round nut, so that the round nut is evenly stressed , and more convenient to install or disassemble; only need to pull the handle when using.

Preferably, the pin head is columnar, the axis line of the pin head is perpendicular to the lower end surface of the end portion, and the axis line of the pin head is parallel to the axis line of the bayonet socket. The pin head is perpendicular to the lower end surface of the end portion, so that the pin head can better bear force and transmit force. the

Preferably, the pin heads are evenly distributed on the lower end surface of the end portion around the bayonet socket. The pin heads are evenly distributed on the lower end surface of the end portion, and its position just corresponds to the hole on the round nut, which is conducive to the close combination of the utility model and the round nut. the

Preferably, the cross section of the pin head is circular or polygonal. the

Preferably, the end portion is flat, and the axis of the end portion coincides with the axis of the bayonet socket. In order to adapt to a smaller operating space, the utility model sets the end portion into a flat plate shape.

Preferably, there are three pin heads. The number of pin heads generally corresponds to the number of holes on the step surface of the round nut of the press. It can only be less than the number of holes on the round nut, but not more. Setting three pin heads can make the force distribution on the round nut more uniform, so that Protect round nuts from damage. the

Preferably, the handle part is provided with an extension rod. When the nut is tightly connected and it is difficult to pull it apart directly or when the nut needs to be tightened more tightly, an extension rod can be added to use the principle of leverage to increase the force. the

Preferably, the extension rod is cylindrical. In this way, it is only necessary to sleeve the extension rod on the end of the handle part. the

Preferably, the bayonet fits with the round nut in a clearance, and the inner diameter of the bayonet is 0-5mm larger than the diameter of the corresponding round nut. When in use, the utility model is convenient to rotate without interference.

The beneficial effects brought by the utility model are that the utility model is simple and reasonable in structure, easy to process, convenient and quick to use, shortens the time for installing and disassembling the round nut, reduces the labor intensity of employees, and has a stable structure, which prevents the round nut from damage.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the utility model;

Accompanying drawing 2 is a kind of sectional structure schematic diagram of accompanying drawing 1;

Accompanying drawing 3 is a kind of structure diagram of round nut in the prior art.

Explanation of symbols: 1. handle part; 2. bayonet socket; 3. end part; 4. pin head; 5. large cylinder; 6. small cylinder.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: A special tool for installation and disassembly of round nuts in this embodiment, as shown in Figures 1 and 2, includes a body, one end of the body is a handle part 1, and the handle part 1 is sleeved with a cylindrical extension rod. One end is a terminal head 3 .

The end portion 3 is flat, and the end portion 3 is provided with a round hole-shaped bayonet 2 matching the round nut. The axis line of the end portion 3 coincides with the axis line of the bayonet 2, and the bayonet 2 can be connected The nuts are clearance fit, the inner diameter of the bayonet socket 2 is 0-5mm larger than the diameter of the corresponding round nut, and three upright pin heads 4 are installed on the lower surface of the end portion 3 .

The pin heads 4 are columnar, and the cross section of the pin heads 4 is circular. The end face is vertical, and the axis line of the pin head 4 is parallel to the axis line of the bayonet socket 2 .

The above is only a description of the preferred embodiments of the utility model, but it should not be understood as a limitation to the protection scope of the utility model. The utility model is not limited to the above embodiments, and its specific structure or shape is allowed to be changed. In a word, the protection scope of the present utility model shall include those transformations or substitutions and modifications that are obvious to those skilled in the art.

Claims (9)

1. A special tool for installing and dismounting round nuts, characterized in that it includes a body, one end of the body is a handle (1), the other end of the body is a head (3), and the end (3) A round hole-shaped bayonet (2) matching the round nut is provided, and several upright pin heads (4) are provided on the lower surface of the end portion (3). 2. A special tool for installing and dismounting round nuts according to claim 1, characterized in that the pin head (4) is cylindrical, and the axis line of the pin head (4) is in line with the end portion ( The lower end surface of 3) is vertical, and the axis line of the pin head (4) is parallel to the axis line of the bayonet (2). 3. A special tool for installing and dismounting round nuts according to claim 2, characterized in that the pin heads (4) are evenly distributed under the end portion (3) around the bayonet socket (2) end face. 4. A special tool for installing and dismounting round nuts according to claim 3, characterized in that the cross-section of the pin head (4) is circular or polygonal. 5. A special tool for installing and dismounting round nuts according to claim 1, characterized in that the end portion (3) is flat, and the axis of the end portion (3) is in line with the bayonet ( 2) The axis lines coincide. 6. A special tool for installing and dismounting round nuts according to claim 1 or 2 or 3 or 4 or 5, characterized in that there are three pin heads (4). 7. A special tool for installing and dismounting round nuts according to claim 1, characterized in that the handle part (1) is provided with an extension rod. 8. A special tool for installing and dismounting round nuts according to claim 7, wherein the extension rod is cylindrical. 9. A special tool for installing and dismounting round nuts according to claim 1, characterized in that the bayonet (2) is in clearance fit with the round nut, and the inner diameter of the bayonet (2) is larger than the diameter of the corresponding round nut by 0- 5mm.

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