CN207344190U

CN207344190U - A kind of steel construction piece boring grab

Info

Publication number: CN207344190U
Application number: CN201721219854.4U
Authority: CN
Inventors: 万琴
Original assignee: Chongqing Jie Jie Steel Structure Co Ltd
Current assignee: Chongqing Jie Jie Steel Structure Co Ltd
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2018-05-11
Anticipated expiration: 2027-09-22

Abstract

The utility model proposes a kind of steel construction piece boring grab, including bottom plate, clamp system, clamp system includes limit base, mounting table, jacking mechanism, cam mechanism, jacking mechanism includes boss, through hole is set in boss, mandril, mandril outer sheathed spring are set in through hole, limiting stand is set in through hole, cam mechanism includes installing plate, and in setting shaft on installing plate, cam is set in shaft, activity sets contact in through hole, and contact is connected to mandril.When cam is contacted with contact, mandril is biased toward mounting table direction, and the workpiece being positioned at this time on mounting table is limited seat and is clamped with mandril, so as to achieve the purpose that fixed clamp, after workpiece is by fixed clamp, will not shift so as to ensure that borehole accuracy；When cam does not contact with contact, mandril does not stress, and spring, which recovers deformation, makes mandril be moved toward mounting base direction, so that workpiece is released.

Description

A kind of steel construction piece boring grab

Technical field

It the utility model is related to component in a kind of mechanical processing of steel construction piece, and in particular to a kind of steel construction piece drilling folder Tool.

Background technology

The characteristics of steel be intensity it is high, from heavy and light, integral rigidity is good, deformability is strong, therefore for building large span and super Height, the building of superduty are particularly suitable；Material homogeneity and isotropism are good, belong to perfect elastic body, best suit common engineering The basic assumption of mechanics；Material plasticity, good toughness, can there is moderate finite deformation, can bear dynamic load well；Construction period is short； Its industrialization degree is high, can carry out the high Virtual production of mechanization degree.

Steel construction is the structure being mainly made of steel material, is one of main building construction types.Structure mainly by The component such as girder steel, steel column, steel truss made of shaped steel and steel plate etc. forms, generally use weld seam, spiral shell between each component or component Bolt or rivet interlacement.Because its dead weight is lighter, and easy construction, it is widely used in the fields such as large-sized workshop, venue, Super High.

So-called steel construction piece, is by welding, riveting or and the steel construction that various ways link into an integrated entity such as is bolted Component, these steel construction pieces link mutually, and condition each other, and form an organic steel construction entirety.In general, steel knot Component is prefabricated processing in the factory, then moves to construction site and carry out Assembling and installation.General common assembling and peace Dress mode is weld seam, bolt or rivet interlacement., it is necessary to drill in advance on steel construction piece when being connected by screw bolts, so that Process the through hole passed through for bolt.And during processing and drilling, it is particularly important that to the fixed clamp of workpiece to be processed, one Workpiece variation occurs in denier, and then borehole accuracy is inadequate, the problem of scene can be caused not install.

Utility model content

For the deficiency in the presence of the prior art, the utility model provides a kind of steel construction piece boring grab, can Clamping is fixed to steel construction piece to be processed, ensures the precision of drilling, solve that borehole accuracy can not enough install asks Topic.

To achieve the above object, the utility model employs following technical solution：A kind of steel construction piece boring grab, bag Bottom plate, clamp system are included, the clamp system includes limit base, mounting table, jacking mechanism, the cam machine being sequentially arranged on bottom plate Structure, the jacking mechanism include the boss being arranged on bottom plate, and through hole is horizontally disposed with the boss, in the through hole activity set Mandril, the outer sheathed spring of the mandril, closely places the limiting stand set in the through hole of end to spring retainer, the cam mechanism bag The installing plate on bottom plate is included, in setting shaft on installing plate, the cam rotated around it, the through hole at nearly installing plate end are set in shaft Interior activity sets the contact for coordinating cam, and the contact is connected to mandril；Rotated on the cam and ratchet, the bottom plate are set The pawl of ratchet is closed in upper establishing, and the support spring of support pawl is additionally provided with bottom plate.When cam is contacted with contact, mandril quilt Push up to mounting table direction, the workpiece being positioned at this time on mounting table is limited seat and is clamped with mandril, so as to reach fixed clamp Purpose, after workpiece is by fixed clamp, will not shift so as to ensure that borehole accuracy；When cam does not contact with contact When, mandril does not stress, and spring, which recovers deformation, makes mandril be moved toward mounting base direction, so that workpiece is released；Pressed from both sides in workpiece When holding, cam cannot be rotated further, otherwise when cam rotation can make mandril not stress so that workpiece quilt to after leaving contact Unclamp, therefore when cam is contacted with contact, ratchet contact pawl down moves, and support spring, which supports pawl, makes it not continue Down, so that ratchet is limited akinesia, namely support spring makes it not continue downwards by ratchet, pawl supporting cam wheel Action, achievees the purpose that cam cannot be rotated further, therefore when cam is contacted with contact, ratchet, pawl, support spring coordinate User can be made to be not required to apply the stabilization that external force keeps cam, cam, which is stablized, just can guarantee that workpiece is firmly clamped, simple and convenient, Save labour.

Further, handle is set on the cam.Convenient operation.

Further, the mounting table passes through helicitic texture connecting bottom board.Convenient disassembly and can adjust height, preferably Matching clamping, boring work.

Further, closely place end in boss and set connection through hole and outwardly extending guide part, guide part is for mandril The cavity structure of activity.Guide part make mandril inside and outside activity is more smooth, be more advantageous to clamping, loosening the progress of work.

Further, mounting base is set on the cam, ratchet is connected to mounting base by rotating member, bottom is set on the bottom plate Seat, pawl are rotatably arranged on base.It is simple in structure, production facility.

Further, one end of support spring is connected to bottom plate, and the support spring is another to be terminated at pawl bottom.Support Spring connects pawl, makes the support effect of pawl more preferable, more cam can be made not move after cam fixation.

Compared with the prior art, the utility model has the advantages that：When cam is contacted with contact, mandril quilt Push up to mounting table direction, the workpiece being positioned at this time on mounting table is limited seat and is clamped with mandril, so as to reach fixed clamp Purpose, after workpiece is by fixed clamp, will not shift so as to ensure that borehole accuracy；When cam does not contact with contact When, mandril does not stress, and spring, which recovers deformation, makes mandril be moved toward mounting base direction, so that workpiece is released；Pressed from both sides in workpiece When holding, cam cannot be rotated further, otherwise when cam rotation can make mandril not stress so that workpiece quilt to after leaving contact Unclamp, therefore when cam is contacted with contact, ratchet contact pawl down moves, and support spring, which supports pawl, makes it not continue Down, so that ratchet is limited akinesia, namely support spring makes it not continue downwards by ratchet, pawl supporting cam wheel Action, achievees the purpose that cam cannot be rotated further, therefore when cam is contacted with contact, ratchet, pawl, support spring coordinate User can be made to be not required to apply the stabilization that external force keeps cam, cam, which is stablized, just can guarantee that workpiece is firmly clamped, simple and convenient, Save labour.

Brief description of the drawings

Fig. 1 is the structure diagram of steel construction piece boring grab.

Fig. 2 is the structure diagram of cam mechanism.

Reference numeral：1 bottom plate, 2 limit bases, 3 mounting tables, 4 boss, 5 through holes, 6 mandrils, 7 springs, 8 limiting stands, 9 installations Plate, 10 shafts, 11 cams, 12 contacts, 13 ratchets, 14 pawls, 15 support springs, 16 handles, 17 helicitic textures, 18 are oriented to Portion, 19 mounting bases, 20 rotating members, 21 bases.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

As shown in Figs. 1-2, a kind of steel construction piece boring grab described in the utility model, including bottom plate 1, clamp system, The clamp system includes limit base 2, mounting table 3, jacking mechanism, the cam mechanism being sequentially arranged on bottom plate 1, the mounting table Helicitic texture 17 is set on 3, with setting threaded hole on 3 corresponding bottom plate of mounting table, mounting table 3 passes through 17 connection screw thread of helicitic texture Hole, the jacking mechanism include the boss 4 being arranged on bottom plate 1, and through hole 5 is horizontally disposed with the boss 4, is lived in the through hole 5 Dynamic to set mandril 6, the outer sheathed spring 7 of mandril 6, sets the limiting stand 8 spacing to spring 7 in the through hole 5 at nearly 3 end of mounting table, Connection through hole 5 and outwardly extending guide part 18 are set in nearly 3 end of mounting table of boss 4, guide part 18 is the cavity for the activity of mandril 6 Structure.

The cam mechanism include be arranged on bottom plate 1 on installing plate 9, in setting shaft 10 on installing plate 9, set in shaft 10 around Its cam 11 rotated, sets handle 16 on the cam 11, and activity, which is set, in the through hole 5 at nearly 9 end of installing plate coordinates cam 11 Contact 12, for contact 12 with the contact surface of cam 11 to match the intrados of cam 11, the contact 12 is connected to mandril 6, The spring 7 is flexibly connected with contact 12.

Mounting base 19 is set on the cam 11, ratchet 13 is rotationally connected to mounting base 19, the bottom by rotating member 20 Base 21 is set on plate 1, coordinates the pawl 14 of ratchet 13 to be rotatably arranged on base 21, support pawl 14 is additionally provided with bottom plate 1 Support spring 15,15 1 end of support spring is connected to bottom plate 1, and the support spring 15 is another to be terminated at 14 bottom of pawl.

The application method of the utility model is：Workpiece to be processed is positioned over putting between limit base 2 and boss 4 Put on platform 3, and the final height of workpiece is adjusted by adjusting helicitic texture 17, make the height and limit base 2 and mandril 6 of workpiece Match somebody with somebody, so as to be limited seat 2 and mandril 6 clamps；Rotated counterclockwise by 16 operation of cam 11 of handle, namely push cam 11, when Cam 11 promotes contact 12 to move and mandril 6 is moved to 2 direction of limit base after contacting contact 12, while 7 stress of spring Be limited platform 8, locating part 12 compresses, mandril 6 contacts workpiece after moving out through hole 5, guide part 18, and workpiece is by mandril 6, limit base 2 grip, and are processed；While cam 11 is pressed down, down moving contact pawl 14, pawl 14 prop up spine to ratchet 13 Wheel 13 is allowed to rotate, otherwise pawl 14 drives down compression support spring 15 by ratchet 13, when support spring 15 is compressed During to the gravitational equilibrium of its reverse elastic force and cam 11, cam 11 reaches balance in the case of or else applying external force at this time, at this time Cam 11 is still matched with the intrados of contact 12, therefore mandril 6 coordinates still together with limit base 2 and clamps workpiece, makes it Firmly it is processed, avoids the phenomenon that workpiece produces offset.

After process finishing, user continues to rotate counterclockwise by 16 operation of cam 11 of handle, namely continues to push cam 11, contact 12 separated with cam 11, contacted, spring 7, which does not stress, recovers deformation, drives contact 12 toward 11 direction of cam Movement, that is, drive mandril 6 to be moved toward 11 direction of cam, and workpiece does not stress and is not clamped, can be removed, such a mode ratchet 13 Continue to compress pawl 13, support spring 15.

Certainly after process finishing, user can also be rotated clockwise by 16 operation of cam 11 of handle, namely above carry cam 11, contact 12 separated with cam 11, contacted, spring 7, which does not stress, recovers deformation, drives contact 12 toward cam 11 Direction is moved, that is, drives mandril 6 to be moved toward 11 direction of cam, and workpiece does not stress and is not clamped, can be removed, such a mode spine Wheel 13 is away from pawl 13.

Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, can be to this The technical solution technical scheme is modified or replaced equivalently of utility model, without departing from the objective and model of technical solutions of the utility model Enclose, it should all cover among the right of the utility model.

Claims

A kind of 1. steel construction piece boring grab, it is characterised in that：Including bottom plate (1), clamp system, the clamp system include according to Secondary limit base (2), mounting table (3), jacking mechanism, cam mechanism on bottom plate (1), the jacking mechanism include being arranged on bottom Boss (4) on plate (1), through hole (5) is horizontally disposed with the boss (4), in the through hole (5) activity mandril (6), institute are set Mandril (6) outer sheathed spring (7) is stated, the limiting stand (8) spacing to spring (7), institute are set in the through hole (5) at nearly mounting table (3) end State cam mechanism include be arranged on bottom plate (1) on installing plate (9), in setting shaft (10) on installing plate (9), set in shaft (10) around Its cam (11) rotated, in the through hole (5) at nearly installing plate (9) end activity the contact (12) for coordinating cam (11), institute are set State contact (12) and be connected to mandril (6)；

Rotated on the cam (11) and ratchet (13) is set, the pawl (14) of establishing conjunction ratchet (13), bottom plate on the bottom plate (1) (1) support spring (15) of support pawl (14) is additionally provided with.
A kind of 2. steel construction piece boring grab as claimed in claim 1, it is characterised in that：Handle is set on the cam (11) (16)。
A kind of 3. steel construction piece boring grab as claimed in claim 1, it is characterised in that：The mounting table (3) passes through screw thread Structure (17) connecting bottom board (1).
A kind of 4. steel construction piece boring grab as claimed in claim 1, it is characterised in that：In nearly mounting table (3) end of boss (4) If connecting through hole (5) and outwardly extending guide part (18), guide part (18) is the cavity structure for mandril (6) activity.
A kind of 5. steel construction piece boring grab as claimed in claim 1, it is characterised in that：Mounting base is set on the cam (11) (19), ratchet (13) is connected to mounting base (19) by rotating member (20), base (21) is set on the bottom plate (1), pawl (14) can It is rotatably arranged on base (21).
A kind of 6. steel construction piece boring grab as claimed in claim 1, it is characterised in that：The support spring (15) one terminates In bottom plate (1), the support spring (15) is another to be terminated at pawl (14) bottom.