CN2139049Y

CN2139049Y - Plug pin-pulling unit

Info

Publication number: CN2139049Y
Application number: CN 92231885
Authority: CN
Inventors: 徐家禄; 王世武; 郑生田
Original assignee: Bengbu Signal & Telecommunications Appliances Factory Of No4 Engineering Bureau
Current assignee: Bengbu Signal & Telecommunications Appliances Factory Of No4 Engineering Bureau
Priority date: 1992-09-01
Filing date: 1992-09-01
Publication date: 1993-07-28
Anticipated expiration: 2002-09-01

Abstract

The utility model relates to a pulling device of a plug pin, and the utility model is composed of screw rods, nuts, bracket rods, connection blocks, clamping jaws and clamping plugs. Two bracket rods are fixed on the two sides of the nuts which are penetrated through by the screw rods which are connected with the connection blocks, and the screw rods can be oppositely turned. Two clamping jaws are hinged with the connection blocks, and the clamping plugs with screw threads are arranged on the clamping jaws. The clamping plugs with the screw threads can be adjusted to make the clamping jaws clamp the plug pin, and the plug pin can be quickly and cushily pulled by rotating the screw rods. The utility model also has the advantages of small size and light weight.

Description

Plug pin-pulling unit

Plug pin is dialled and is opened device, belongs to a kind of extracting tool, especially unloads the hand tools of interference fit plug pin.

The construction at railway electrification station be unable to do without track circuit with maintenance, track circuit is because after nature or human factor cause damage, often need to change track switch wire jumper and track connecting line, pin must be pulled out at the original plug pin in rail side in the replacing process, the eliminating method of dialling that uses at present is crowbar sled, hammering, dashes, the used tool heaviness, the operation effort, and it is low dial to remove success rate, plug pin for railway frog position or guard rail place, then have to flat chisel ailhead be evened out earlier, punch again with electric drill, labour intensity is higher.There is not to find to be applicable to the hand tools of above-mentioned occasion by retrieval.

To be that design is a kind of can carry out quick, laborsaving group of dialling of opening to the plug pin on the rail or other similar pin, rivet etc. and open device the purpose of this utility model, its appearance and size is little, to be suitable for the dialling plug pin that opens narrow and small occasion, all can dial horizontal, vertical plug pin or pin etc. and open.

For achieving the above object, the utility model proposes plug pin dials and opens device, it is made up of a rhizoid thick stick, nut, two cradling pieces, contiguous block, two jaws and screw thread clamping bolt, there is a through hole that cooperates with handle the leading screw upper end, the middle part cooperates with nut thread, nut bilateral symmetry ground fixed support bar; The upper end of contiguous block is connected with the leading screw lower end and can relatively rotates, and the upper end of lower end and jaw is hinged, and the screw thread clamping bolt is arranged on the nearly pawl mouth place of jaw.

Contiguous block is integrated with securing member by two halfbodies, closing in halfbody of each halfbody upper end has a concave volume, this concave volume is up-thin-low-thick two half that axially connect Cylinders and downcut along symmetry axis, and two concave volumes are identical with the leading screw lower end in conjunction with the cavity that the back forms; The pawl mouth of jaw has a vertical recessed cylinder, and there is a projection side of pawl mouth, and wherein the projection of a jaw is provided with waist garden shape through hole, the corresponding garden shape tapped through hole that is provided with on the projection of another jaw; The screw thread clamping bolt is passed waist garden shape through hole on the jaw projection and is screwed in garden shape tapped through hole on another jaw projection, and turn screw thread clamping bolt can make two jaw pawl mouth opening and closing.

Description of drawings:

Fig. 1: example structure schematic diagram;

The left view of Fig. 2: Fig. 1;

The A-A cutaway view of Fig. 3: Fig. 1;

The B-B cutaway view of Fig. 4: Fig. 1;

The A of Fig. 5: Fig. 1 is to view;

The left view of Fig. 6: Fig. 5;

Fig. 7: contiguous block structure two views.

Be described in further detail below in conjunction with embodiment of the present utility model and accompanying drawing:

Referring to Fig. 1, Fig. 2, garden, the upper end through hole of leading screw 1 inserts turn leading screw 1 usefulness for handle, leading screw 1 adopts trapezoidal thread, adopt welding manner to be connected between nut 2 and the cradling piece 3, low wide and up narrow between the two stands bar 3, about 2 °-4 ° of axis angle, this is because open in the process dialling, contiguous block 4 rises with leading screw 1 on the one hand, also can rotate with leading screw 1 owing to the contact friction force between contiguous block 4 and leading screw 1 lower end on the other hand, in contiguous block 4 uphill process, the restriction of two stands bar 3 will be subjected to, the angle that two jaw planes, 5 place and plane, two stands bar 3 place can be produced is more and more littler, and cradling piece 3 adopts steel pipe manufacturing, the two ends blank off shutoff mouth of pipe.

Referring to Fig. 3, square sectional is adopted in leading screw 1 upper end, so that adopt spanner to substitute handle under some occasion.

Referring to Fig. 4, the half garden groove of going up symmetry the garden week of nut 2 play dual parts to alleviate and dial open the device Storage case overlap in annexes such as fastening handle and afterburning sleeve pipe.

Referring to Fig. 5, Fig. 6, provided the structural representation of right formula jaw 5, levoform except that with pawl mouth waist garden shape through hole nearby with the shape tapped through hole of garden with right formula symmetry, because of pawl mouth structure size should not design excessive, and this place is in complex stress condition, so jaw 5 adopts high strength steel and heat-treats, as 40C _rSurface hardening makes hardness be not less than HRC45.

Referring to Fig. 7, because contiguous block 4 is the big down little counterbore of with the structure of junction, leading screw 1 lower end, consider the synthetic structure of two symmetrical half blocks of employing from technological angle, it shown in Fig. 7 right formula, levoform except that the fastener hole difference with right formula symmetry, six securing members adopt bolts, and fastening the ream in bolt head place immersed oneself in counterbore.

During use, with the tight-lipped subsides plug pin of pawl root, turn screw thread clamping bolt 5 makes the pawl mouth clamp plug pin, and turn leading screw 1 makes cradling piece 3 supports on rail side (or workpiece face), and continuation turn leading screw 1 can be dialled plug pin and open.

Volume of the present utility model is little, and maximum overall dimensions are 100 * 60 * 240mm only, and weight is less than 3Kg, dialling nail speed is 30-50 times that employing has instrument now, very laborsaving comparatively speaking, because width dimensions 60mm only, can be laterally or vertical the use in the little occasion of supporting surface width.

Claims

1, plug pin is dialled and is opened device, comprise leading screw, nut and cradling piece, there is a through hole that cooperates with handle the leading screw upper end, the middle part cooperates with nut thread, each fixes a cradling piece nut bilateral symmetry ground, it is characterized in that: also comprise a contiguous block 4, two jaws 5 and the screw thread clamping bolt 6 that can make jaw 5 clamp or loosen, contiguous block 4 upper ends are connected with the leading screw lower end also and can relatively rotate, the upper end of lower end and jaw 5 is hinged, and screw thread clamping bolt 6 is arranged on the nearly pawl mouth place of jaw 5.

2, plug pin according to claim 1 is dialled and is opened device, it is characterized in that: contiguous block 4 is integrated with securing member by two halfbodies, closing in halfbody of each halfbody upper end has a concave volume, this concave volume is up-thin-low-thick two half that axially connect Cylinders and downcut along symmetry axis, and two concave volumes are identical with the leading screw lower end in conjunction with the cavity that the back forms.

3, plug pin according to claim 1 is dialled and is opened device, it is characterized in that: the pawl mouth of jaw 5 has a vertical recessed cylinder, there is a projection side of pawl mouth, and the projection of a jaw 5 is provided with waist garden shape through hole, the corresponding screw thread garden shape through hole that is provided with on the projection of another jaw 5.

4, dial according to claim 1 or 3 described plug pins and open device, it is characterized in that: screw thread clamping bolt 6 is passed waist garden shape through hole on jaw 5 projections and is screwed in screw thread garden shape through hole on another jaw 5 projections.