CN206175429U - Easily twist double -screw bolt with cross threaded end - Google Patents

Abstract

The utility model discloses an easily twist double -screw bolt with cross threaded end, including the double -screw bolt pole, the upper and lower both ends of double -screw bolt pole set up respectively to upper and lower thread end, go up that the cover is equipped with the nut on the thread end, the tip is equipped with and has seted up criss -cross threaded end, this threaded end is used for cup jointing appurtenance, the nut bilateral symmetry is equipped with the kickup, and is circular -arc dual tactics handle. Be equipped with the cross threaded end who is used for cup jointing appurtenance on this double -screw bolt pole, avoid the tradition with artifical with the drawback in the double -screw bolt pole screw in adapting unit, can be with the help of appurtenance machinery screw in double -screw bolt pole, labour saving and time saving improves the steadiness of assembly between the parts, the setting has the butterfly nut of handle, and the lifting surface area is tightened in the increase, just is used in the torque on the nut through the leverage increase, and the nimble fastening that realizes the double -screw bolt is favorable to improving production and work efficiency when reducing the labour, and convenient and practical is applicable to multiple occasion, is worth extensive and promotes.

Description

An easy-twist stud with a cross-shaped threaded end

technical field

The utility model relates to a stud, in particular to an easy-twist stud with a cross-shaped thread end.

Background technique

Studs, without heads, are only a type of fastener with external threads at both ends. When connecting, one end of it must be screwed into a part with an internal thread hole, and the other end must pass through a part with a through hole, and then screw on a nut to make the two parts tightly connected into a whole. This type of connection is called a stud connection, and it is also a detachable connection. It is mainly used in occasions where one of the parts to be connected has a large thickness and requires a compact structure, or where bolt connection is not suitable due to frequent disassembly.

Existing studs, including stud rods, are usually arranged in two forms. One is that the entire stud rod is provided with threads, or the two ends of the stud rod are symmetrically provided with threads, that is, double-ended studs, as shown in Figure 2 As shown, there are the following defects in the studs of such structure: one, generally a threaded end is screwed into a part with an internally threaded hole by hand for pre-tightening, because the manpower is small, and the middle part of the stud rod is Cylindrical structure, which leads to low efficiency of stud assembly, and there are many thread stages at the threaded end, which is time-consuming and labor-intensive, and the work efficiency is low. Loosen or screw out the nut together, which will cause the stud to be screwed in again when reassembling the parts, increasing the labor workload and reducing work efficiency; second, after the stud rod is selected into the part, it is generally manual Or use auxiliary tools to tighten the nuts. If you use manpower, the nuts are generally hexagonal and short in length, and the force-bearing area is small. When you tighten them manually, your hands will feel tingling and the labor intensity is high. If you use auxiliary tools, you need a lot of effort. And after the stud is put into the through hole of the connecting part, due to the limitation of the space or the structure of the connecting part, it may be impossible or difficult to put the tool in the stud head, thereby affecting the fastening of the stud, and then affecting the orderly progress of the work.

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides an easy-twist stud with a cross-shaped threaded end. By setting the cross-shaped end that can be socketed with auxiliary tools, the stud rod can be screwed into the connecting part by changing the manpower It saves time and labor and improves the stability of assembly. By setting a wing nut with a handle, the tightening stress area is increased, and the torque acting on the nut is increased through leverage, which reduces labor force and flexibly realizes the screw nut. The fastening of the column is conducive to improving production and work efficiency, is convenient and practical, and is suitable for various occasions.

In order to achieve the above object, the technical scheme that the utility model takes:

An easy-to-twist stud with a cross-shaped threaded end, including a stud rod, the upper and lower ends of the stud rod are respectively set as upper and lower threaded ends, and the upper threaded end is sleeved with a Cooperate with the connected nut, the end of the upper threaded end is provided with a threaded end that is connected with it, and the threaded end is provided with a groove in a cross-shaped structure, and the threaded end is used for socketing the screw An auxiliary tool for the pole to be screwed into the internal threaded hole of the connecting part, and two handles bent upwards and in the shape of an arc are arranged symmetrically on both sides of the nut.

As an optimal technical solution, in order to expand the contact area between the connecting part and the nut, which is beneficial to the contact tightening of the connecting part, and at the same time ensure the firm connection between the stud rod and the nut, and effectively prevent the loosening between the connecting parts, the upper threaded end The upper sleeve is provided with a fastening seal connected with the nut, and the fastening seal is an assembly of spring washers and flat washers.

Compared with the prior art, the utility model has the beneficial effects:

1. The stud rod is equipped with a cross-shaped threaded end for socketing auxiliary tools, which avoids the disadvantages of manually screwing the stud rod into the connecting parts, and can be mechanically screwed into the stud rod with the help of auxiliary tools, saving time and effort , improve the stability of the assembly between the parts, effectively prevent the entire stud rod and the nut from being unscrewed during disassembly; a wing nut with a handle is provided to increase the tightening force area, and increase the rotational force acting on the nut through leverage It can flexibly realize the fastening of studs while reducing the labor force, which is conducive to improving production and work efficiency. It is convenient and practical, and is suitable for various occasions.

2. The fastening seal is set as a combination of spring washer and flat pad, which expands the contact area between the connecting part and the nut, which is beneficial to the contact and tightening of the connecting part, and at the same time ensures the firm connection between the stud and the nut, effectively preventing the connection Looseness between parts.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of existing stud;

Reference numerals: 1, stud rod, 1-1, upper threaded end, 1-2, lower threaded end, 2, nut, 2-1, handle, 3, threaded end, 3-1, groove, 4 , Fastening seal, 4-1, spring washer, 4-2, flat washer.

detailed description

Propose a kind of specific embodiment of the utility model as shown in Figure 1, a kind of easy-to-twist stud with a cross-shaped threaded end includes a cylindrical stud rod 1, and the upper end of the stud rod 1 is set to The upper threaded end 1-1, the lower end is set as the lower threaded end 1-2, the middle part of the stud rod 1 is a cylindrical connecting rod, and the upper threaded end 1-1 is set with a nut that is connected with it 2. The end of the upper threaded end 1-1 is provided with a threaded end 3 that is connected to it, and the threaded end 3 is provided with a cross-shaped groove 3-1, and the threaded end 3 An auxiliary tool for socketing the stud rod 1 into the internal threaded hole of the connecting part. The auxiliary tool is a special pneumatic or electric tightening rotary tool, such as a tightening rotary tool with a cross-shaped extrusion head. Both sides of the nut 2 are symmetrically provided with two upwardly curved handles 2-1 in an arc shape, and the raised and curved arc-shaped handles 2-1 increase the contact area with human fingers or auxiliary tools, effectively reducing the strain on the hands. The tingling sensation or the force acting on the auxiliary tool, and the torque acting on the nut 2 is increased through leverage, so that the fastening between the connecting parts can be realized conveniently and flexibly.

The upper threaded end 1-1 is provided with a fastening seal 4 connected with the nut 2, the fastening seal 4 is an assembly of spring washers and flat pads, and the fastening seal 4 can expand the connecting parts and The contact area of the nut 2 is conducive to the contact and tightening of the connecting parts, and at the same time ensures the firm connection between the upper threaded end 1-1 and the nut 2, effectively preventing the loosening of the connecting parts.

When the utility model is in use: use a special pneumatic or electric tightening rotary tool to be set on the threaded end 3, screw the lower threaded end 1-2 of the stud rod 1 into the internal threaded hole of the connecting part, and then the upper threaded end 1-1 Pass through the through hole of another connecting part, put the flat washer 4-2, spring washer 4-1, nut 2, and threaded end 3 on the stud rod 1 in sequence, and then manually screw or By acting on the handle 2-1 through the opening or the ring wrench, the nut 2 can be conveniently and flexibly tightened and fixed on the stud rod 1, so that the stud connection between the parts can be realized, saving time and effort. If the connecting parts are disassembled and the threaded end 3 is loosened, it is only necessary to rotate the handle 2-1 in the opposite direction manually or with the help of an auxiliary tool until the nut 2 and the upper threaded end are loosened, then the upper connecting part can be disassembled, and the lower threaded end 1-1 1 is also tightly sleeved in the internal threaded hole of the lower connecting part.

Of course, the above is only a detailed description of the preferred embodiment of the utility model in conjunction with the accompanying drawings, and is not intended to limit the scope of implementation of the utility model. All equivalent changes made according to the principle, structure and structure of the utility model shall be Covered within the protection scope of the present utility model.

Claims (2)

1. An easy-to-twist stud with a cross-shaped threaded end, comprising a stud rod (1), the upper and lower ends of the stud rod (1) are respectively set as upper and lower threaded ends (1- 1, 1-2), the upper threaded end (1-1) is covered with a nut (2) that is connected with it, and it is characterized in that: the end of the upper threaded end (1-1) is provided with a Cooperate with the threaded end (3), the threaded end (3) is provided with a groove (3-1) in a cross-shaped structure, the threaded end (3) is used to socket the stud An auxiliary tool for the rod (1) to be screwed into the inner threaded hole of the connecting part, and two handles (2-1) curved upward and arc-shaped are symmetrically provided on both sides of the nut (2). 2. An easy-to-twist stud with a cross-shaped threaded end according to claim 1, characterized in that: the upper threaded end (1-1) is sleeved with a tightening screw connected to the nut (2). A fastening seal (4), the fastening seal (4) is an assembly of spring washers and flat washers.