CN110566550A - Screw connection structure - Google Patents

Abstract

The invention discloses a screw connecting structure, which comprises a screw for connecting first equipment with second equipment and a transition piece; the screw passes through the first device and then is connected with a transition piece fixed on the second device. The traditional screw connection structure is improved, the transition piece is arranged as a connection medium of the screw connection, when the screw is broken, the effect of quickly taking out the broken screw can be realized by taking out the transition piece, and the transition piece is simpler and more convenient to take out than the broken screw which is directly taken out, so that the quick recovery of the screw connection can be realized; the labor and time cost are saved, the operation rate of the equipment is improved, and the precision of the equipment is ensured.

Description

screw connection structure

technical field

The invention relates to the technical field of mechanical equipment, in particular to a screw connection structure.

Background technique

Screw connection is a common connection method in mechanical equipment, and it is widely used in various mechanical equipment. Because mechanical equipment is easily affected by external factors or impact loads during use, it will cause the screw to break. Once the screw breaks, the threaded section of the screw will be stuck in the threaded hole of the base. The diameter of the screw is generally small. It is very difficult to remove the screws, and there is a possibility of damaging the thread of the base. If the thread of the base is damaged, the base must be re-welded, drilled, and tapped to repair it. In addition, during the repair welding process, it is very easy to cause thermal deformation of the equipment base, which seriously affects the accuracy of the equipment.

Contents of the invention

The technical problem to be solved by the present invention is to provide a screw connection structure, which can quickly recover the screw connection after the screw is broken.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: screw connection structure, including screws connecting the first device and the second device, and also including a transition piece; the screw passes through the first device and is fixed on Transition piece connection on second device.

Further, the transition piece is a collar structure with threads on both the outer surface and the inner hole surface, and the second device is provided with a fixing hole threaded with the transition piece; the screw and the inner hole of the transition piece Face screw connection.

Further, the bottom surface of the fixing hole is a concave arc surface.

The beneficial effect of the present invention is that: the present invention improves the traditional screw connection structure, by setting the transition piece as the connection intermediary of the screw connection, when the screw breaks, the effect of quickly taking out the broken screw can be realized by taking out the transition piece, and the transition The removal of parts is simpler and more convenient than taking out broken screws directly, so it can realize the rapid recovery of screw connection; save manpower and time costs, improve the operation rate of the equipment and ensure the accuracy of the equipment.

Description of drawings

Fig. 1 is a structural sectional view of the present invention;

In the figure, it is marked as: 100-first device, 200-second device, 210-fixing hole, 300-screw, 400-transition piece.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , the screw connection structure of the present invention is used to connect and fix two devices. In the traditional screw connection, the screw is directly connected with the threaded hole provided on the equipment. When the screw breaks due to external factors or impact load, it is very difficult and easy to remove the broken screw in the threaded hole due to the small size of the screw. damage to the equipment, the present invention improves the traditional screw connection structure, adding a transition piece 400, the outer diameter of the transition piece 400 is much larger than the outer diameter of the screw 300, and increasing the fixing hole 210 provided on the second equipment 200 The transition piece 400 adopts a collar structure, and the inner and outer surfaces of the transition piece 400 are respectively provided with internal threads and external threads, and the inner surface of the fixing hole 210 is provided with internal threads that match the external threads of the fastener 400. Threads, the inner diameter and inner thread of the transition piece 400 match the outer diameter and outer thread of the screw 300 respectively. The transition piece 400 is fixed in the fixing hole 210 through screw connection, and the screw 300 passes through the first device 100 and is threaded with the transition piece 400 , and the first device 100 and the second device 200 are connected and fixed by the fastening effect of the screw 300 . After the transition piece 400 is added in the present invention, if the breakage of the screw 300 occurs, the broken section of the screw 300 is located in the transition piece 400, and maintenance personnel do not need to directly take out the broken section of the screw 300, but can remove the transition piece 400. Take out the broken section of the screw 300, because the size of the transition piece 400 is much larger than that of the screw 300, it is more convenient to take it out, the transition piece 400 can be unscrewed from the fixing hole 210 by rotating the shaft by welding the shaft on the transition piece 400, and the transition piece After the 400 is taken out of the device, the broken section of the screw 300 is removed or the transition piece 400 is directly replaced, so that the fast recovery of the screw connection can be achieved without causing damage to the device.

As shown in FIG. 1 , the bottom of the fixing hole 210 in the present invention is a concave arc surface. By setting the arc surface, the depth of the center of the bottom of the fixing hole 210 is higher than the depth of the edge, so as to provide space for the connected screw 300. The end of the screw 300 can be screwed out of the bottom surface of the transition piece 400, so that when the transition piece 400 is taken out, the exposed end of the screw 300 can be clamped, which is convenient for maintenance personnel to take out the broken section of the screw 300.

Claims (3)

1. Screw connection structure comprising a screw (300) connecting a first device (100) with a second device (200), characterized in that: further comprising a transition piece (400); the screw (300) passes through the first device (100) and then is connected with the transition piece (400) fixed on the second device (200).

2. The screw connection structure according to claim 1, wherein: the transition piece (400) is a sleeve ring structure with threads on the outer surface and the inner hole surface, and the second equipment (200) is provided with a fixing hole (210) in threaded fit with the transition piece (400); the screw (300) is in threaded connection with the inner bore surface of the transition piece (400).

3. The screw connection structure according to claim 2, wherein: the bottom surface of the fixing hole (210) is an inwards concave arc-shaped surface.