CN2171717Y

CN2171717Y - Combined bolt

Info

Publication number: CN2171717Y
Application number: CN 93241084
Authority: CN
Inventors: 曾望开
Original assignee: JIANGNAN MACHINE FACTORY
Current assignee: JIANGNAN MACHINE FACTORY
Priority date: 1993-10-08
Filing date: 1993-10-08
Publication date: 1994-07-13
Anticipated expiration: 2003-10-08

Abstract

The utility model discloses a combined bolt containing a bolt sleeve and a bolt rod, which is widely used for fastening articles in the mechanical industry. The key technique is characterized in that the bolt sleeve is a round tube with one end pressed with a spring plate and the other end pressed with a sleeve hole, the bolt rod is a round rod with one end provided with a spring plate hole aligned with the spring plate and a hammer body capable of pressing one end of the spring plate outwards to form a step, and the other end pressed with a rod hole aligned with the sleeve hole, and the bolt rod also comprises a relative wedge which penetrates through the sleeve hole and the rod hole to fix the bolt rod. Has the characteristics of multiple use, good effect, large tensile resistance, good earthquake resistance and the like.

Description

Combined bolt

The utility model relates to a kind of combined bolt, particularly a kind of not threaded combined bolt, and it is widely used in the fastening of mechanical industry object.

In background technique, though bolt energy fastening machines parts, because the existence of its screw thread is prone to stripped thread, damage, nonexpondable effect and performances such as stretching resistance, anti-vibration are subjected to restriction to a certain degree, for overcoming these defectives, it are improved.

The purpose of this utility model provides a kind of nonexpondable effective, stretching resistance is big, antidetonation is good combined bolt.

The purpose of this utility model is achieved in that

It contains the bolt cover, be inserted in the bolt cover tightening latch, pass bolt and put trepanning relative wedge its pin is fixed with tightening latch upper boom hole.

Described bolt cover is that an end is pressed with the pipe that shell fragment, the other end are pressed with trepanning; Described tightening latch is that an end is provided with the shell fragment cave of shell fragment contraposition, can forms the hammer body of step to external pressure with one of shell fragment, and the other end is pressed with the pole with the bar hole of trepanning contraposition.

Fig. 1 is a structural drawing of the present utility model.

Fig. 2 is the structural drawing of bolt cover 1 among Fig. 1.

Fig. 3 is the enlarged view of shell fragment 5 among Fig. 2.

Fig. 4 is the structural drawing of tightening latch 2 among Fig. 1.

Below in conjunction with accompanying drawing, the utility model is done to describe further:

Shell fragment 5 and trepanning 6 on the bolt cover 1 can be stamped to form, and shell fragment 5 punching presses make its not only flexible but also flexible after quenching and tempering is handled.Hammer body 8, bar hole 9 on the tightening latch 2 also can be stamped to form.The wall thickness of bolt cover 1 can be chosen for 1/2nd of tightening latch 2 diameters, and the external diameter of bolt cover 1 can be by the specification or the model of bolt commonly used.The material of bolt cover 1, tightening latch 2 and wedge 3 can be selected steel for use No. 45.

At bolt cover 1, after tightening latch 2 processes, tightening latch 2 is inserted in the bolt cover 1, the shell fragment of its shell fragment cave 7 and bolt cover 1 be harmonious (contraposition), this moment, trepanning 6 misplaced 2/3rds with bar hole 9, when the need clamping article, to choose the model or the specification of combined bolt according to the size in clipped object spare hole, again with the outside of packing ring 4 pads in clipped object spare hole, with the tip of wedge 3 (two relatively) insert align 1/3rd, with spanner relative wedge 3 is compressed or hammers into shape into hammer, what make it to misplace 2/3rds resets, when resetting, tightening latch 2 is upwards carried, and hammer body 8(also is the wedge principle) move upward, 5(organizes more with shell fragment) one to external pressure, form a step, block the inwall in clipped object spare hole, realizing living cooperates, and is processed into the step that is mated in advance as the wall with clipped object spare hole, allow these two steps just package and to realize drive fit, the wedge 3 that will compress or hammer into shape more into is crooked to the left and right, just can realize dead the cooperation, and these three kinds of cooperations can be decided as required.

As withdrawing from, only need wedge 3 is withdrawed from, the shell fragment 5 on tightening latch 2 and the tightening latch 2 resets and gets final product.

The utility model is compared the good effect that produces with background technology:

1, owing to no stripped thread, damage, so repeatedly result of use is good;

2, owing to no screw thread, in the same model bolt, increased the cross-sectional area of tightening latch, so stretching resistance is greater than the bolt of same model.

3, can take tight fit or the dead clamping mode that cooperates, realize high shockproof requirements.

Claims

1, a kind of combined bolt, it contains bolt cover [1], is inserted in the tightening latch [2] of bolt cover [1], it is characterized in that:

Described bolt cover [1] is that an end is pressed with the pipe that shell fragment [5], the other end are pressed with trepanning [6],

Described tightening latch [2] be an end be provided with the shell fragment cave [7] of shell fragment [5] contraposition, can with one of shell fragment [5] to external pressure form step hammer body [8], the other end is pressed with and the pole in the bar hole [9] of trepanning [6] contraposition,

Also contain and pass trepanning [6], bar hole [9] relative wedge [3] that its pin is fixed.