CN202040172U

CN202040172U - Double-ended tension bolt

Info

Publication number: CN202040172U
Application number: CN2011200340715U
Authority: CN
Inventors: 王常在; 魏兆芹
Original assignee: DALIAN SANFENG HEAT-EXCHANGER Co Ltd
Current assignee: DALIAN SANFENG HEAT-EXCHANGER Co Ltd
Priority date: 2011-01-31
Filing date: 2011-01-31
Publication date: 2011-11-16
Anticipated expiration: 2021-01-31

Abstract

The utility model provides a double-ended tension bolt, which resolves the problem that an existing tension bolt is easy to be loosened under vibration load. A bolt core of the double-ended tension bolt is mounted in a cylindrical bolt casing, one end of the bolt core is provided with a frustum-shaped tension core, the other end of the bolt core is provided with a threaded hole or an external thread connected with the frustum-shaped tension core, and a single tension core is provided with an inner hole. Four axial open grooves are arranged at even intervals along circumferences of two ends of the bolt casing, and the open grooves at one end are staggered with the open grooves at the other end by 45degrees. The end, provided with the threaded hole or the external thread, of the bolt core penetrates through the bolt casing and the inner hole of the single tension core prior to being screwed with other fixed objects through the threaded hole or the external thread of the bolt core, and two ends of the bolt casing have tension functions at the same time. The larger the screw moment is, the higher the tension functions are. The double-ended tension bolt has the advantages that the double-ended tension bolt is large in tension area, not easy to be loosened under vibration load and high in tension reliability.

Description

Double end tensioner bolt

Technical field

The utility model belongs to the mechanical parts field, is specifically related to a kind of double end tensioner bolt.

Background technique

Existing tensioner bolt all is to have only an end tensioner, uses for a long time under oscillating load, and bolt is easily loosening.

Summary of the invention

The utility model provides a kind of double end tensioner bolt, solves existing tensioner bolt easily loosening problem under oscillating load.The utility model tensioner bolt is the double end Tensioning structure, and bolt core (2) is contained in the cylindric bolt housing (3); Described bolt core (2) one ends have round table-like tensioner core (1), and bolt core (2) the other end connects round table-like monomer tensioner core (5); Described bolt housing (3) two ends have shaft orientation opening groove.

Described bolt core (2) the other end has screw thread.

Described bolt core (2) screw thread is the internal thread of tapped hole (4).

Described bolt core (2) screw thread is outside thread (6).

Described monomer tensioner core (5) has endoporus (7), and endoporus (7) diameter is not less than the diameter that bolt core (2) has screw thread one end.

Described bolt housing (3) two ends shaft orientation opening groove respectively along bolt housing (3) circumference all apart from opening four, between be 90 ° of distributions.

End opening groove (8) in the shaft orientation opening groove of described two ends and the other end opening slot (9) 45 degree that stagger, promptly an end opening groove (8) is if be distributed in 0,90,180,270 degree positions, and then the other end opening slot (9) is distributed in 45,135,225,315 degree positions.

Of the present utility model benefiting is that the tensioner area of contact is big, is difficult for becoming flexible tensioner reliability height under oscillating load.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a double end tensioner bolt generalized section;

Fig. 2 is a bolt core schematic representation;

Fig. 3 is a monomer tensioner core schematic representation;

Fig. 4 is a bolt shell schematic representation.

Among the figure: tensioner core 1, bolt core 2, bolt housing 3, tapped hole 4, monomer tensioner core 5, outside thread 6, endoporus 7, an end opening groove 8, the other end opening slot 9.

Embodiment

As shown in Figure 1, the tensioner bolt is the double end Tensioning structure, and bolt core 2 is contained in the cylindric bolt housing 3.Bolt core 2 one ends have round table-like tensioner core 1, and bolt core 2 the other ends have tapped hole 4 or outside thread 6 (see figure 2)s, and bolt core 2 connects round table-like monomer tensioner core 5.

See Fig. 3, monomer tensioner core 5 has endoporus 7.

As shown in Figure 4, bolt housing 3 two ends along circumference all apart from opening four shaft orientation opening grooves, an end opening groove 8 and the other end opening slot 9 45 degree that stagger; Promptly an end opening groove 8 is if be distributed in 0,90,180,270 degree positions, and then the other end opening slot 9 is distributed in 45,135, and 225,315 degree positions are to guarantee bolt housing 3 intensity.

See Fig. 1, bolt core 2 threaded ends are penetrated in the bolt housing 3, monomer tensioner core 5 is put into the other end of bolt housing 3, after bolt core 2 passes the endoporus 7 of bolt housing 3 and monomer tensioner core 5, tapped hole 4 or outside thread 5 by bolt core 2 are tightened with other fixture, and along with tightening continuously, tensioner core 1 and monomer tensioner core 5 push bolt housing 3 two ends simultaneously, two ends produce the effect of tightly rising along

opening slot

8,9 spreadings; Stubborn square is big more

Claims

1. a double end tensioner bolt is contained in formation in the cylindric bolt housing (3) by bolt core (2), and it is characterized in that: described bolt core (2) one ends have round table-like tensioner core (1), and bolt core (2) the other end connects round table-like monomer tensioner core (5); Described bolt housing (3) two ends have shaft orientation opening groove.

2. according to the described double end tensioner of claim 1 bolt, it is characterized in that: described bolt core (2) the other end has screw thread.

3. according to the described double end tensioner of claim 2 bolt, it is characterized in that: described screw thread is the internal thread of tapped hole (4).

4. according to the described double end tensioner of claim 2 bolt, it is characterized in that: described screw thread is outside thread (6).

5. according to the described double end tensioner of claim 1 bolt, it is characterized in that: described monomer tensioner core (5) has endoporus (7), and endoporus (7) diameter is not less than the diameter that bolt core (2) has screw thread one end.

6. according to the described double end tensioner of claim 1 bolt, it is characterized in that: described bolt housing (3) two ends shaft orientation opening groove respectively along bolt housing (3) circumference all apart from opening four, between be 90 ° of distributions.

7. according to the described double end tensioner of claim 6 bolt, it is characterized in that: the end opening groove (8) in the shaft orientation opening groove of described two ends and the other end opening slot (9) 45 degree that stagger, promptly an end opening groove (8) is if be distributed in 0,90,180,270 degree positions, then the other end opening slot (9) is distributed in 45,135,225,315 degree positions.