CN203380839U

CN203380839U - Pin puller

Info

Publication number: CN203380839U
Application number: CN201320474575.8U
Authority: CN
Inventors: 黄信亮
Original assignee: STON ROBOT MANUFACTURING (CHANGZHOU) Co Ltd
Current assignee: STON ROBOT CHANGZHOU CO., LTD.
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-01-08
Anticipated expiration: 2023-08-06

Abstract

The utility model relates to a pin puller which is a tool special for pulling a positioning pin from a workpiece. The pin puller comprises a hollow base, a rotation nut and a hexagon socket cylindrical bolt. The bolt penetrates through the base. The rotation nut is arranged on the bolt in a sleeved mode and located above the base. The outer ring of the bolt is not in contact with the inner wall of the base. The pin puller has the advantages of being simple in structural design, convenient to manufacture and machine, low in cost, capable of replacing rotation nuts according to hexagon socket bolts of different sizes and capable of taking pins out of inner threaded holes of different sizes.

Description

Pin removal

Technical field

The utility model relates to a kind of specific purpose tool of pulling out alignment pin on workpiece.

Background technology

In machinery, pin is mainly as assembling and positioning, and the overload that also can be used as connecting, loosening in the level security device is cut off connection.The type of pin has: straight pin, taper bolt, pin with split pin hole, split pin and safety pin etc.Taking-up for the ease of pin also is designed with internal thread cylinder/taper bolt.Traditional pin removal connector has five, is easy to carry, and by changing connector, can realize the taking-up to most of internal thread pins, and pin can rotate hardly in the taking-up process in pin-and-hole.But, pin, straight pin particularly, in the machinery assembling, common micro-interference fit, when pin coordinates tension, or the pin installation time crosses for a long time and, after getting rusty, traditional pin removal is difficult to sell taking-up, and traditional pin removal price is relatively costly.

Some factory has made easy pin removal by oneself, first welds a T-shaped bar, then welds the bolt of the internal thread hole of corresponding pin at head, in use, intermediate sleeve one hollow bolt, be screwed into bolt that T-shaped club head welds the internal thread hole of pin, upwards clash into hollow bolt again, will sell taking-up.This pin removal manufacture is simple, and cost is low, and hollow bolt is larger than the sliding hammer impact of traditional pin removal, can realize the taking-up of the pin of larger interference fit.But the bolt of its head can not can only adapt to a kind of pin of dimension of inner screw thread specification with changing, and, after permanent the use, bolt that head welds easily disconnects from weld.

The utility model content

The technical problems to be solved in the utility model is: in order to adapt to the pin of different dimension of inner screw thread specifications, and improve the dynamics of pulling pin, the utility model provides a kind of pin removal.

The utility model solves the technical scheme that its technical problem adopts: a kind of pin removal, the base, rotating nut and the interior hexagonal cylindrical hook bolt that comprise inner hollow, described bolt-through base, described rotating nut is sleeved on bolt, and be positioned at base top, do not contact between described bolt outer ring and base inner wall.

Even in order to guarantee pressure, be convenient to axial location, described pin removal, also comprise bearing, the bottom surface indent of described base has can hold lower cylinder chamber to be pulled pin, and the top indent has upper cylinder chamber, there is columniform neck chamber between described upper cylinder chamber and lower cylinder chamber, described neck chamber, upper cylinder chamber and lower cylinder chamber coaxially arrange and are connected, and the Lower Half of described bearing is embedded in cylinder chamber, and the inner ring of described bearing is greater than the outer ring of bolt.Described bearing adopts single direction thrust ball bearing.

For the ease of bearing is installed, described rotating nut has the swivelling cover that matches with base top and the hex nut of swivelling cover top center, hex nut and swivelling cover integrative-structure, and described swivelling cover lower surface indent has the cavity that holds the bearing first half.

Further particularly, described upper cylinder chamber is consistent with the internal diameter of lower cylinder chamber, and the internal diameter that the internal diameter in neck chamber is less than cylinder chamber is slightly larger than the bolt external diameter, and described lower cylinder chamber extends to the middle and upper part in base from the bottom surface of base.

The beneficial effects of the utility model are, pin removal of the present utility model, and structural design is simple, is convenient to processing and manufacturing, and cost is low, and can change rotating nut according to the hexagon socket head cap screw of different size, can realize the taking-up to the pin of different size internal thread hole.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the structural representation of the utility model pin removal.

Fig. 2 is the understructure schematic diagram of the utility model pin removal.

Fig. 3 is the rotating nut structural representation of the utility model pin removal.

Fig. 4 is the schematic perspective view of the utility model pin removal.

Fig. 5 is the top view of the utility model pin removal.

In figure: 1, base, 1-1, lower cylinder chamber, 1-2, upper cylinder chamber, 1-3, neck chamber, 2, rotating nut, 2-1, swivelling cover, 2-1-1, cavity, 2-2, hex nut, 3, bolt, 4, bearing.

The specific embodiment

By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

As shown in Figure 1, it is the utility model pin removal overview, the base 1, rotating nut 2 and the interior hexagonal cylindrical hook bolt 3 that comprise inner hollow, bolt 3 runs through base 1, rotating nut 2 is sleeved on bolt 3, be connected with bolt thread, and rotating nut 2 is positioned at base 1 top, do not contact between bolt 3 outer rings and base 1 inwall.

As shown in Figure 2, the bottom surface indent of the base 1 of the utility model pin removal has can hold lower cylinder chamber 1-1 to be pulled pin, the top indent has upper cylinder chamber 1-2, there is columniform neck chamber 1-3 between upper cylinder chamber 1-2 and lower cylinder chamber 1-1, neck chamber 1-3, upper cylinder chamber 1-2 and lower cylinder chamber 1-1 coaxially are wholely set and are connected, upper cylinder chamber 1-2 is consistent with the internal diameter of lower cylinder chamber 1-1, the internal diameter that the internal diameter of neck chamber 1-3 is less than cylinder chamber 1-2 is slightly larger than bolt 3 external diameters, and lower cylinder chamber 1-1 extends upwardly to the middle and upper part in base 1 from the bottom surface of base 1.

As shown in Figure 3, the rotating nut 2 of the utility model pin removal has the swivelling cover 2-1 that matches with base 1 top and the hex nut 2-2 of swivelling cover 2-1 top center, hex nut 2-2 and swivelling cover 2-1 integrative-structure, pin removal also comprises a single direction thrust ball bearing 4, the Lower Half of bearing 4 is embedded in cylinder chamber 1-2, the inner ring of bearing 4 is slightly larger than the outer ring of bolt 3, swivelling cover 2-1 lower surface indent has the cavity 2-1-1 that holds bearing 4 first halves, during making, rotating nut 2 and thrust ball bearing 4 matched in clearance.

As Figure 1-5, during use, first interior hexagonal cylindrical hook bolt 3 is screwed in internal thread hole to be pulled pin, on the lower cylinder chamber 1-1 of base 1 just in time covers on and waits to pull pin, get in the inner hexagonal hole that an inner hexagon spanner is inserted in interior hexagonal cylindrical hook bolt 3 tops, effect is to control interior hexagonal cylindrical hook bolt 3, makes pin in the taking-up process, bolt 3 does not rotate in pin-and-hole, get again the spanner of a band mouth, clamp hex nut 2-2, then rotate rotating nut 2, by the screw thread transmission, will sell taking-up.

The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this utility model technological thought, carry out various change and modification fully.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to the claim scope.

Claims

1. a pin removal, it is characterized in that: the base (1), rotating nut (2) and the interior hexagonal cylindrical hook bolt (3) that comprise inner hollow, described bolt (3) runs through base (1), described rotating nut (2) is sleeved on bolt (3), and be positioned at base (1) top, do not contact between described bolt (3) outer ring and base (1) inwall.

2. pin removal as claimed in claim 1, it is characterized in that: also comprise bearing (4), the bottom surface indent of described base (1) has can hold lower cylinder chamber (1-1) to be pulled pin, the top indent has upper cylinder chamber (1-2), there is columniform neck chamber (1-3) between described upper cylinder chamber (1-2) and lower cylinder chamber (1-1), described neck chamber (1-3), upper cylinder chamber (1-2) and lower cylinder chamber (1-1) coaxially arrange and are connected, the Lower Half of described bearing (4) is embedded in cylinder chamber (1-2), the inner ring of described bearing (4) is greater than the outer ring of bolt (3).

3. pin removal as claimed in claim 2, is characterized in that: described bearing (4) employing single direction thrust ball bearing.

4. pin removal as claimed in claim 2, it is characterized in that: described rotating nut (2) has the swivelling cover (2-1) that matches with base (1) top and the hex nut (2-2) of swivelling cover (2-1) top center, hex nut (2-2) and swivelling cover (2-1) integrative-structure, described swivelling cover (2-1) lower surface indent has the cavity (2-1-1) that holds bearing (4) first half.

5. pin removal as claimed in claim 2, it is characterized in that: described upper cylinder chamber (1-2) is consistent with the internal diameter of lower cylinder chamber (1-1), the internal diameter that the internal diameter in neck chamber (1-3) is less than cylinder chamber (1-2) is slightly larger than bolt (3) external diameter, and described lower cylinder chamber (1-1) extends to the middle and upper part in base (1) from the bottom surface of base (1).