CN201524997U

CN201524997U - Special pin pulling assistive device for blind pin

Info

Publication number: CN201524997U
Application number: CN200920229865XU
Authority: CN
Inventors: 夏三喜; 祖广蛟; 杜安用; 夏泉; 李崇辉; 张鹏
Original assignee: Dongfeng Automobile Co Ltd
Current assignee: Dongfeng Automobile Co Ltd
Priority date: 2009-11-16
Filing date: 2009-11-16
Publication date: 2010-07-14
Anticipated expiration: 2019-11-16

Abstract

The utility model relates to a utensil is assisted to special pull pin of blind round pin has solved the problem that the difficulty was extracted to present blind round pin. The technical scheme includes that the device comprises a base, a push rod and an expansion sleeve, wherein a conical expansion sleeve is sleeved on the front section of an inner hole of the base, and the rear section of the inner hole of the base is in threaded connection with the front section of the push rod; the inner hole of the expansion sleeve is cylindrical, and a groove is formed in the expansion sleeve along the axial direction; the front end of the push rod is contacted with the rear end of the expansion sleeve, and the rear section of the push rod is provided with an external thread which can be in threaded connection with the pin puller. The utility model discloses simple structure, convenient to use, various specifications blind round pin can be extracted fast to the cooperation pin puller.

Description

The blind pin special use accessory of pulling pin

Technical field

The utility model relates to machine-building and maintenance field, a kind of specifically shop tool of pulling pin.

Background technology

Alignment pin on existing equipment or the part has two kinds: the last end face of first kind of alignment pin is threaded the hole, and this kind alignment pin can use existing standard pin removal directly it to be extracted, such as often using this alignment pin on the lathe; Second kind of alignment pin is to go up end face not to be threaded the hole, and the bottom outlet of pin is not through hole, is the blind pin in a kind of location (claiming blind pin again).This kind alignment pin does not have special-purpose puller, normally utilizes the drill bit earlier boring littler No. one than alignment pin diameter, and end face is attacked standard thread thereon then, utilizes the standard pin removal that it is extracted.If but the diameter of this alignment pin is very little, the tap out again that then is difficult to hole is difficult to the problem of extracting thereby exist, so need a kind of special-purpose accessory of extracting such alignment pin that is specifically designed to of design.

Summary of the invention

The purpose of this utility model is in order to solve the problems of the technologies described above, to provide a kind of simple in structure, easy to use, the blind pin special use that can cooperate pin removal to be used for extracting fast the blind pin of all size shop tool of pulling pin.

Technical scheme comprises base, push rod and ringfeder, and described base endoporus leading portion is with the ringfeder of taper, and tapering is preferably 1: 5-3, back segment is threaded with the push rod leading portion; Described ringfeder endoporus is a cylindricality, and has groove vertically; The back end in contact of described push rod front end and ringfeder, back segment are provided with the external screw thread that can be threaded with pin removal.

Described push rod stage casing radial section is a polygon.

The radial section of described base is a polygon.

Described ringfeder is taper, and endoporus is a cylindricality, can just in time be inserted in blind pin upper end, and when ringfeder is pushed when the base leading portion moves, the ringfeder leading portion is held out against by base endoporus leading portion, makes the ringfeder that has groove be subjected to external compression, along the blind pin of radial contraction locking.The front end of described push rod establish external screw thread can with the screw-internal thread fit of base endoporus back segment, the rear end of described push rod establish external screw thread can with the screw-internal thread fit of pin removal front end.It is to utilize spanner that screw thread between push rod and the base is tightened for convenience that the radial section of described push rod stage casing and base is designed to polygon, and push rod promotion ringfeder is moved down, and is preferably hexagon.

Beneficial effect:

1, the utility model is simple in structure, easy to use, can be connected with the standard pin removal, is used to extract the blind pin of all size.

2, have the ringfeder of groove by extruding, ringfeder is radially shunk, utilize the frictional force principle that blind pin locking is extracted, be not subjected to blind pin diameter size restrictions.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model schematic perspective view.(wherein base is broken away).

1-ringfeder, 1.1-groove, 2-base, 2.1-endoporus, 2.2-internal thread, 3-push rod, 3.1-hex nut, 3.2-external screw thread, 3.3-external screw thread.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further explained explanation:

Referring to Fig. 1, comprise base 2, ringfeder 1 and push rod 3, described base 2 is a hex nut, and its endoporus 2.2 leading portions are with the ringfeder 1 of taper, and described ringfeder 1 endoporus is cylindricality and has groove 1.1.Described base 2 endoporus 2.1 back segments are carved with internal thread 2.2, push rod 3 leading portions are carved with external screw thread 3.3, push rod 3 and base 2 are connected by internal and external threads, the back end in contact of the front end of described push rod 3 and ringfeder 1, the stage casing of described push rod 3 is fixed with hex nut 3.1, back segment is carved with external screw thread 3.2, and is corresponding with the internal thread of pin removal leading portion.The aperture of described ringfeder 1 endoporus is slightly larger than the path length of blind pin, gets final product just in time to be inserted in blind pin.

The course of work:

Ringfeder 1 of the present utility model is inserted in blind pin epimere, with two spanners base 2 and push rod 3 is tightened, make push rod 3 push ringfeder 1 forward, ringfeder 1 overcomes the active force reach of base endoporus 2.1 front ends, and is subjected to external pressure along the blind pin of radial contraction locking; Then pin removal is threaded with push rod 3 rear ends and tightens, the collision block of bump pin removal is extracted blind pin.After blind pin extracted, pin removal and push rod 3 are unclamped, active force disappears, and moves behind the ringfeder 1 and unclamps blind pine, and blind pin can be by taking out in the ringfeder 1.

Claims

1. blind pin special use accessory of pulling pin comprises base, it is characterized in that also include push rod and ringfeder, described base endoporus leading portion is with the ringfeder of taper, and back segment is threaded with the push rod leading portion; Described ringfeder endoporus is a cylindricality, and has groove vertically; The back end in contact of described push rod front end and ringfeder, back segment are provided with the external screw thread that can be threaded with pin removal.

2. the blind pin special use as claimed in claim 1 accessory of pulling pin is characterized in that described push rod stage casing radial section is a polygon.

3. the blind pin special use as claimed in claim 1 accessory of pulling pin is characterized in that described ringfeder tapering is 1: 5-3.

4. as claim 1 or the 2 or 3 described blind pin special uses accessory of pulling pin, it is characterized in that the radial section of described base is a polygon.