CN201455882U

CN201455882U - Stud installer

Info

Publication number: CN201455882U
Application number: CN2009200169546U
Authority: CN
Inventors: 田江河
Original assignee: SHENYANG SWAT AUTO PARTS CO Ltd
Current assignee: SHENYANG SWAT AUTO PARTS CO Ltd
Priority date: 2009-08-26
Filing date: 2009-08-26
Publication date: 2010-05-12
Anticipated expiration: 2019-08-26

Abstract

The utility model provides a stud installer which is characterized in that the stud installer mainly comprises a sleeve, a bolt and a threaded guide sleeve, wherein a central hole of the threaded guide sleeve is divided into a front section, a middle section and a rear section, the front end is a unthreaded hole, namely a guide hole, and the middle is a threaded hole having the same thread characteristics (i.e. lead angle and thread pitch) as a stud; the bolt is screwed into the rear section of the central hole of the threaded guide sleeve; and the sleeve is connected with the rear part of the threaded guide sleeve. The stud installer provided by the utility model has the advantages that the stud can be assembled in good condition, the assembly efficiency can be greatly improved, the structure is simple, the operation is convenient, the use is reliable, the service life is long, and easily-worn parts are convenient and simple to replace.

Description

A kind of studs erector

Technical field

The utility model relates to the erecting tools of studs.

Background technology

After studs is installed, especially after installing studs in the exhaust manifold, the studs that often occurs because of the snap-in force between double-screw bolt screw thread and the instrument when instrument is pulled down is stuck to come off in instrument or from the exhaust manifold rear flange, perhaps the thread damage of studs.

Summary of the invention

The purpose of this utility model is to provide a kind of screw thread that does not damage studs, and the studs erecting tools that withdraws from easily.

The utility model provides a kind of studs erector, it is characterized in that: mainly comprise sleeve, screw and screw thread guide pin bushing, before, during and after screw thread guide pin bushing centre bore is divided into three sections: wherein front end is unthreaded hole a---guide hole, the centre is and the studs thread characteristics, be lead angle and pitch, identical screwed hole; Screw threads is in the back segment of screw thread guide pin bushing centre bore, and sleeve is connected with screw thread guide pin bushing rear portion.

The studs erector that the utility model provides, the endoporus of its sleeve can be square hole or hexagonal hole, so that with square toes or six square toes instrument turnbarrels.

The studs erector that the utility model provides, the rear end of its sleeve can be shaped on outer six sides, interior six sides or interior four directions, so as spanner, box spanner, with six square toes or square head instrument turnbarrel.

The studs erector that the utility model provides, the end of its screw can be made spherical, contacts with studs with assurance, and does not damage studs.

The studs erector that the utility model provides, the head of its screw can be shaped on square hole or hexagonal hole, so that with square toes or six square toes instrument rotary screws.

The studs erector that the utility model provides, its sleeve and screw thread guide pin bushing can be made one.

The studs erector that the utility model provides, its advantage is: ensure that studs assembles intactly, improve efficiency of assembling greatly, have simple in structurely, easy and simple to handle, use reliably, the life-span is long, and the quick-wear part replacing is easy etc.

Description of drawings

Fig. 1 is the structural representation of studs erector.

The specific embodiment

Embodiment 1

Studs erector, its structure comprise sleeve 1, screw 2 and screw thread guide pin bushing 3 as shown in Figure 1, before, during and after screw thread guide pin bushing 3 centre bores are divided into three sections: wherein front end is unthreaded hole a---guide hole, the centre is and the studs thread characteristics, i.e. lead angle and pitch, identical screwed hole; Screw 2 is spun in the back segment of screw thread guide pin bushing 1 centre bore, and sleeve 1 is connected with screw thread guide pin bushing 3 rear portions, and the endoporus of sleeve 1 is a square hole, and the end of screw 2 is made spherical, and the head of screw 2 is shaped on hexagonal hole, and sleeve 1 is integrally welded with screw thread guide pin bushing 3.

During the assembling studs, the manual earlier head end with studs screws in one section of matrix desired area, then screw thread guide pin bushing 3 is aimed at the studs tail end, again sleeve 1 is installed on the throw, when instrument rotates, to drive sleeve 1 and 3 rotations of screw thread guide pin bushing, this moment, the studs tail end will screw under the guiding of unthreaded hole in the screwed hole of screw thread guide pin bushing 3 centre bore middle-ends, when producing certain pressure before studs tail end and the screw 2 during end in contact, the rotation of driving studs, studs will further screw in the matrix this moment, until studs is tightened.

When withdrawing from the studs erector, the reverse rotation of control throw, to drive the counter-rotating of studs erector, because screw 2 leading portions are spherical, the contact-making surface of it and studs rear end is little, so frictional force will be less than the screwing force of studs, screw 2 heads will separate with the studs tail end this moment, removed the pressure that acts on the studs tail end, the nut that this moment, screw thread guide pin bushing 3 was equivalent to be screwed on the studs, under continuous reverse rotation condition, the studs erector will withdraw from fully, studs then can fixing base on.

Because the bulb of screw 2 increases hardness through heat treatment, has wearability.

Because the internal thread intensity of screw thread guide pin bushing 3 centre bores is lower than studs intensity, so can not cause damage to the studs screw thread.

Claims

1. studs erector, it is characterized in that: mainly comprise sleeve, screw and screw thread guide pin bushing, before, during and after screw thread guide pin bushing centre bore is divided into three sections: wherein front end is unthreaded hole a---guide hole, and the centre is and the studs thread characteristics, be lead angle and pitch, identical screwed hole; Screw threads is in the back segment of screw thread guide pin bushing centre bore, and sleeve is connected with screw thread guide pin bushing rear portion.

2. according to the described studs erector of claim 1, it is characterized in that: the endoporus of described sleeve is square hole or hexagonal hole.

3. according to the described studs erector of claim 1, it is characterized in that: the rear end of described sleeve is shaped on outer six sides, interior six sides or interior four directions.

4. according to the described studs erector of one of claim 1～3, it is characterized in that: the end of described screw is made spherical.

5. according to the described studs erector of claim 4, it is characterized in that: the head of described screw is shaped on square hole or hexagonal hole.

6. according to the described studs erector of one of claim 1～3, it is characterized in that: described sleeve and screw thread guide pin bushing are made one.

7. according to the described studs erector of claim 4, it is characterized in that: described sleeve and screw thread guide pin bushing are made one.

8. according to the described studs erector of claim 5, it is characterized in that: described sleeve and screw thread guide pin bushing are made one.