CN217345347U - Stubborn nut, screw rod extracting tool - Google Patents

Abstract

The utility model provides a stubborn nut and a screw removal tool, which comprises a screw fixing piece and a plurality of top support screw rods. It includes two threaded pair perforations that are concentric and vertically communicated with the through hole, one end of the top support screw is threadedly connected with the corresponding threaded pair of perforations and extends into the through hole, and the other end of the top support screw extends to the outside of the screw fixing part; The through hole of the rod fixing part is sleeved on the outer ring of the nut. After the top support screw extends to the end of the through hole and the fixed nut is tightened, according to the principle of leverage, several force application points are added while the force arm is increased to achieve multiple points at the same time. Simultaneous force is applied, and the length and installation position of the top support screw can be flexibly switched. It is directly used in the disassembly of mechanical equipment parts. On the premise of ensuring the safety of the equipment, it can easily achieve fixed nuts and screws, especially stubborn nuts and screws. Loosen and dismantled is beneficial to improve the efficiency of dismantling and inspection, and the dismantling work can be done with half the effort.

Description

A stubborn nut and screw removal tool

technical field

The utility model belongs to the technical field of mechanical equipment maintenance tools, in particular to a stubborn nut and a screw removal tool.

Background technique

Nuts and screws are important components that secretly connect mechanical equipment parts. With the long-term operation of the mechanical equipment, the internal parts of the mechanical equipment will fail. When the mechanical equipment parts are dismantled and inspected, the clamping industry often faces the dilemma that the stubborn nut and the screw are difficult to disassemble. In the prior art, a wrench is generally used for dismantling operations. The wrench is provided with a clamping handle at one end or both ends of the handle, and an external force is applied through the handle to rotate the nut under the principle of leverage. Because the stubborn nut and the thread of the screw are tightly matched. However, there are problems such as single-arm operation, single disassembly force point, short force arm, and large force required to increase the labor intensity of operators, which is likely to cause the risk of destructive dismantling operations, which affects the safety of equipment and the efficiency of dismantling and inspection.

Utility model content

The present invention aims to solve one of the above technical problems at least to a certain extent, and the present invention provides a stubborn nut and screw removal tool.

The technical scheme adopted by the utility model to solve its technical problems is:

A stubborn nut and a screw removal tool, comprising a screw fixing piece and a plurality of top support screw rods, the screw fixing piece is provided with a through hole, and the screw fixing piece is provided with at least one set of threaded pair perforations, and a set of screw threads. The pair of perforations includes two threaded pair of perforations that are concentric and vertically communicated with the through hole, one end of the top support screw is threadedly connected with the corresponding threaded pair of perforations and extends into the through hole, and the other end of the top support screw extends to the screw fixing member external.

In the above-mentioned dismantling tool, preferably, the outer shape of the screw fixing member and the cross-section of the through hole are in a hexagonal structure.

Preferably, the thread pair has six perforations, which are respectively arranged at the six sides of the screw fixing member.

In the above-mentioned dismantling tool, preferably, a handle is provided at the end of the top support screw extending to the outside of the screw fixing member.

In the above-mentioned dismantling tool, preferably, the top support screw rod is provided with a first pin hole, and the first pin hole is provided with a first pin rod perpendicular to the top support screw rod.

The above-mentioned dismantling tool is preferably characterized in that the top support screw rod is provided with a sleeve outside, and the sleeve hole is provided with a sleeve hole for sliding cooperation with the top support screw rod.

In the above-mentioned dismantling tool, preferably, an extension rod is connected to the top support screw.

Preferably, the extension rod is provided with a threaded rod extending into the top support screw rod and threadedly matched with the top support screw rod.

Preferably, the extension rod is provided with a second pin hole, and the second pin hole is provided with a second pin rod perpendicular to the extension rod.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) Sleeve the through hole of the screw fixing part on the outer ring of the nut, and after the top support screw extends to the end of the through hole and tighten the fixing nut, according to the principle of leverage, increase the force arm and add several force points at the same time , to achieve multi-point simultaneous force application, easy to loosen nuts and screws, easy to operate, reduce manpower output, avoid the risk of equipment damage caused by destructive dismantling operations, ensure the safety of the equipment itself and subsequent installation performance, and shorten the maintenance time. , dismantling work with less effort.

(2) The disassembly tool is simple to make, easy to use, takes up less space, saves time and effort, and can switch the length and installation position of the top support screw flexibly to ensure that a larger force arm is obtained when the manpower is rotated and loosened, and at the same time, it can effectively avoid the rotation direction. The obstacle surface is directly used in the disassembly of mechanical equipment parts, and can be used for the loosening of nuts and screws of various types and specifications, which is conducive to improving the efficiency of disassembly and inspection.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is the use schematic diagram of the utility model embodiment 1;

Fig. 2 is the AA direction sectional view of Fig. 1;

3 is a schematic diagram of the use of Embodiment 2 of the present invention;

Fig. 4 is the BB direction sectional view of Fig. 3 omitting the sleeve;

Fig. 5 is the use schematic diagram of embodiment 3 of the present utility model;

FIG. 6 is a cross-sectional view taken along the CC direction of FIG. 5 .

Labels in the figure: screw fixing part 1, through hole 101, thread pair perforation 102, top support screw 2, handle 201, first pin hole 202, first pin rod 3, sleeve 4, sleeve hole 401, extension rod 5. Threaded rod 501, second pin hole 502, second pin rod 6, nut 7, screw 8.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial" , "radial", "vertical", "horizontal", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" and "several" mean two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1:

As shown in Figures 1-2, it is a preferred embodiment of the stubborn nut and screw removal tool of the present invention. The removal tool includes a screw fixing member 1 and several top support screws 2. The fixing member 1 is provided with a through hole 101, and the screw fixing member 1 is provided with at least one set of thread pair perforations 102. One end of the top support screw 2 is threadedly connected with the corresponding thread pair through holes 102 and extends into the through hole 101 , and the other end of the top support screw 2 extends to the outside of the screw fixing member 1 .

In the above-mentioned dismantling tool, preferably, the outer shape of the screw fixing member 1 and the cross-section of the through hole 101 are both hexagonal structures, so that the screw fixing member 1 has a stable structure, is easy to manufacture and can be easily sleeved on the outside of the hexagonal nut 7 .

Preferably, the threaded pair of through holes 102 have six and are respectively arranged at the six sides of the screw fixing member 1 to ensure an effective contact area for assembly with the top support screw 2, so that the force is evenly applied when the force is applied at multiple points.

In the above-mentioned dismantling tool, preferably, a handle 201 is provided at the end of the top support screw 2 extending to the outside of the screw fixing member 1 .

Example 2:

As shown in Figures 3-4, it is another preferred embodiment of the stubborn nut and screw removal tool of the present invention. The difference from Example 1 is that the top support screw 2 is provided with a first pin Hole 202, the first pin hole 202 is provided with a first pin rod 3 perpendicular to the top support screw 2, the top support screw 2 is provided with a sleeve 4, and the sleeve 4 is provided with a The sleeve hole 401 with which the top support screw 2 is slidably fitted.

The first pin rod 3 can be inserted into the first pin hole 202 and is perpendicular to the top support screw 2, and the top support screw 2 and the thread pair hole 102 can be easily screwed in and out by applying force through the first pin rod 3, and then pulled out. In the first pin rod 3, the sleeve 4 is slidably fitted into the top support screw 2 through the sleeve hole 401, so as to increase the force arm, and the sleeve 4 is easy to insert and remove.

Example 3:

As shown in Figures 5-6, it is another preferred embodiment of the stubborn nut and screw removal tool of the present invention. The difference from Embodiments 1 and 2 is that the top support screw 2 is connected with an extension rod 5.

Preferably, the extension rod 5 is provided with a threaded rod 501 that extends into the top support screw 2 and is threadedly matched with the top support screw 2 .

Preferably, the extension rod 5 is provided with a second pin hole 502, the second pin hole 502 is provided with a second pin rod 6 perpendicular to the extension rod 5, and the second pin rod 6 is inserted into the second pin hole 502 and perpendicular to the extension rod 5, the extension rod 5 is easily connected with the top support screw 2 with the threaded rod 501 through the second pin rod 6, and the top support screw 2 is screwed into the threaded hole 102 by continuing to rotate. , the increase of the force arm is not as fast as the disassembly and assembly of the casing 4, but the total length of the extension rod 5 and the top support screw 2 is not easy to change when the nut 7 is disassembled, so as to ensure the continuous and stable application of force.

The steps when disassembling the stubborn nut 7 and the screw 8 using the above-mentioned embodiment 1-3 are as follows:

S1: Before disassembling the mechanical equipment, use rust loosening agent to remove rust and lubricate the fastening parts of the stubborn nut 7 and screw 8 20 minutes in advance;

S2: According to the external dimensions of the nut 7 and the screw 8 to be loosened, select the corresponding size of the dismantling device, the screw fixing part 1 and the top support screw 2, so that the size of the through hole 101 is larger than the external size of the nut 7 to ensure that the nut 7 and the screw 8 heads can be easily put in to ensure that the top support screw 2 can have a large contact area with the side of the nut 7;

S3: Put the through hole 101 of the screw fixing member 1 on the outer ring of the nut 7, install a certain number of top support screws 2 by connecting with the corresponding thread pair through holes 102 according to the actual situation, and extend the top support screw 2 to the through hole Tightly fix the nut 7 at the end of 101;

S4: Add the casing 4 or the extension rod 5 according to the demand to increase the force arm, hold the handle 201 of the top support screw 2, the casing 4 or the extension rod, and rotate the device counterclockwise to loosen the nut 7 and the screw 8 to realize disassembly.

The effect of the above dismantling device is:

①According to the lever principle, several force application points are added while the force arm is increased, so as to realize simultaneous force application at multiple points, and the nut 7 and the screw 8 can be easily loosened, which is convenient for operation, reduces the manpower output, and the disassembly work is more efficient with half the effort;

②The length and installation position of the top support screw 2 can be switched flexibly to ensure that a larger force arm can be obtained when the manpower is rotated and loosened, and at the same time, the obstacle surface in the rotation direction can be effectively avoided;

③Adjust the position of the top support screw 2 relative to the screw fixing part 1 by threaded cooperation, which can be used for loosening the nut 7 and the screw 8 of various types and specifications;

④Simple to make, easy to use, less space occupied, time-saving and labor-saving;

⑤ Using this tool, the force is applied synchronously and stably, avoiding the risk of equipment damage caused by destructive dismantling operations, ensuring the safety of the equipment itself and subsequent installation performance, and greatly shortening the maintenance time.

To sum up, this tool is directly used in the disassembly of mechanical equipment parts. On the premise of ensuring the safety of the equipment, the fixed nut 7 and the screw 8, especially the stubborn nut 7 and the screw 8 can be easily loosened, which is beneficial to Improve dismantling efficiency.

A series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalents made without departing from the technical spirit of the present invention The embodiments or changes should all be included within the protection scope of the present invention.

Claims (9)

1. A stubborn nut and screw removal tool, characterized in that it comprises a screw fixing member (1) and several top support screw rods (2), and a through hole (101) is provided in the screw fixing member (1) , the screw fixing member (1) is provided with at least one set of thread pair perforations (102), and one set of thread pair perforations (102) includes two thread pair perforations (102) that are concentric and vertically communicated with the through hole (101), One end of the top support screw (2) is threadedly connected with the corresponding thread pair through holes (102) and extends into the through hole (101), and the other end of the top support screw (2) extends to the outside of the screw fixing member (1). 2 . The stubborn nut and screw removal tool according to claim 1 , wherein the outer shape of the screw fixing member ( 1 ) and the cross-section of the through hole ( 101 ) are both hexagonal in structure. 3 . 3 . The stubborn nut and screw removal tool according to claim 2 , characterized in that, the thread pair through holes ( 102 ) have six and are respectively arranged on the six sides of the screw fixing member ( 1 ). 4 . 4. A stubborn nut and screw removal tool according to claim 1, characterized in that a handle (201) is provided at the end of the top support screw (2) extending to the outside of the screw fixing member (1) . 5. A stubborn nut and screw removal tool according to claim 1, wherein a first pin hole (202) is provided on the top support screw (2), and the first pin hole (202) ) is provided with a first pin rod (3) perpendicular to the top support screw rod (2). 6. A stubborn nut and screw removal tool according to any one of claims 1 to 5, wherein the top support screw (2) is provided with a sleeve (4) outside, and the sleeve ( 4) There is a sleeve hole (401) which is slidably matched with the top support screw (2). 7. A stubborn nut and screw removal tool according to any one of claims 1 to 5, characterized in that an extension rod (5) is connected to the top support screw (2). 8. A stubborn nut and screw removal tool according to claim 7, wherein the extension rod (5) is provided with a top support screw extending into the top support screw (2) and is connected with the top support screw (2). ) threaded rod (501). 9 . The stubborn nut and screw removal tool according to claim 8 , wherein the extension rod ( 5 ) is provided with a second pin hole ( 502 ), and the second pin hole ( 502 ) is in the second pin hole ( 502 ). 10 . A second pin rod (6) perpendicular to the extension rod (5) is provided.

Images