CN201410650Y

CN201410650Y - Hydraulic wrench

Info

Publication number: CN201410650Y
Application number: CN2009200445372U
Authority: CN
Inventors: 高进贤; 王伟民
Original assignee: YANGZHOU SHENLI LIFTING TOOLS MANUFACTURING Co Ltd
Current assignee: YANGZHOU SHENLI LIFTING TOOLS MANUFACTURING Co Ltd
Priority date: 2009-06-04
Filing date: 2009-06-04
Publication date: 2010-02-24
Anticipated expiration: 2019-06-04

Abstract

The utility model discloses a hydraulic wrench for tightening or loosing nut bolt, which comprises a main clamping piece, a secondary clamping piece, a top connector, a hydraulic oil cylinder and a straight handle piece; the main clamping piece and the secondary clamping piece are all in an arc shape and are connected through a connecting pin, a clamping opening capable of containing a bolt head or a nut is formed between the main clamping piece and the secondary clamping piece; the main clamping piece is provided with a connecting arm, the upper surface and the lower surface of the main clamping piece are symmetrically provided with arc-shaped raised strips; the connecting arm is hinged with the top connector, one end of the hydraulic oil cylinder is hinged with the straight handle piece,the other end of the hydraulic oil cylinder is connected with the connecting arm; the straight handle piece is provided with openings which extend from the end part to the middle part of the straighthandle piece, the opposite insides of the two openings are provided with arc-shaped clamping grooves; the main clamping piece is inserted into the openings, the arc-shaped raised strips are clamped into the arc-shaped clamping grooves. When the hydraulic wrench works, the hydraulic oil cylinder drives the main clamping piece to rotate in the straight handle piece, which makes the nut or the boltclamped into the clamping opening rotate to achieve the purpose of loosing and tightening. The hydraulic wrench is simple and reliable, and is convenient to use, and can be used for installing or disassembling of the nut, the bolt in narrow space.

Description

Hydraulic spanner

Technical field

The utility model relates to a kind of instrument of tightening or unclamping nut or bolt, particularly a kind of hydraulic spanner.

Background technology

In the prior art, a kind of plane force system hydraulic spanner is arranged, publication number is CN99227577, its structure mainly is included in the rocking bar of internal body stationary sleeve assembly, one end is connected with piston rod with bearing pin, the other end at the hinge joint sleeve assembly connects a connecting rod simultaneously, the hinged counter-force bar of the other end of this connecting rod, be that counter-force bar one end is articulated on the connecting rod with pin, the other end stretches out outside the body, piston rod, rocking bar, connecting rod, counter-force bar are by bearing pin, sleeve assembly, pin, and be in the same plane, forms plane bar structure; Sleeve assembly is provided with anti-reverse-rotation device; The counter-force bar is made telescopic cartridge-type, to enlarge the range of choice of spanner supporting-point.Owing to adopted plane bar structure, make the active force of oil cylinder output and reaction force balance in plane force system of moment and stressed member generation, this makes the force-bearing situation of body fuselage, each parts become simple, become plane force system, its internal stress situation is greatly improved, therefore just so not harsh to the requirement of material, process equipment and technology.Its weak point is: this hydraulic spanner complex structure, manufacturing cost height.

The utility model content

The purpose of this utility model provides a kind of hydraulic spanner, make its can be easily with bolt or nut screwing clamping or unclamp, simultaneously, it is simple in structure, and is easy to manufacture.

The purpose of this utility model is achieved in that hydraulic spanner, comprise main card spare, secondary fastener, apical grafting head, hydraulic jack and staight shank spare, main card spare and secondary fastener all are circular arc, be connected through connecting pin between both two ends, make and form the bayonet socket that can hold bolt head or nut between the concave profile of main card spare and secondary fastener; Main card spare is provided with a linking arm, and main card spare upper and lower surface also is arranged with the arc raised line; Linking arm and apical grafting head are hinged, and hydraulic jack one end and staight shank spare are hinged, and the other end is connected with linking arm; Staight shank spare is provided with the opening that extends to the middle part from its end, and the phase of two openings is provided with arc-shaped slot to the inside, and described main card spare inserts in the opening, and the arc raised line sets and snaps in the arc-shaped slot.

During the utility model work, because cooperatively interacting of arc raised line and arc-shaped slot arranged, main card spare can rotate in staight shank spare, snap in the turret head of nut or bolt when bayonet socket after, the tail end of staight shank spare is ridden on a certain fixture, make its maintenance motionless, during original state, the plunger of hydraulic jack is positioned at cylinder body, the hydraulic jack oil-feed, plunger stretches out and drives main card spare and rotate, and nut or bolt can be tightened or unclamp certain angle, as nut or bolt as yet motion put in place, the hydraulic oil of hydraulic jack can be discharged, take off this device, make hydraulic jack return to original state, bayonet socket is connected on the turret head of nut or bolt once more, hydraulic jack can move once more, nut or bolt are turned an angle once more, so repeatedly, nut or bolt can be unclamped or tighten.This apparatus structure is simple, and use is reliable and convenient, can be used for the nut in the small space, the installation or removal of bolt.

As further improvement of the utility model, described connecting pin is dismountable structure.Less when the bolt head space, make hydraulic spanner connecting pin can not unloaded when bolt head is socketed on the turret head, be socketed in from the side on the turret head, again connecting pin is in place, this scheme has further facilitated use.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is a main card spare structural representation;

Fig. 3 is the A-A sectional drawing of Fig. 2;

Fig. 4 is the structural representation of staight shank spare;

Fig. 5 is the vertical view of staight shank spare among Fig. 4;

Fig. 6 is that the B-B of staight shank spare among Fig. 4 is to sectional drawing.

Wherein, 1 staight shank spare, 2 arc raised lines, 3 main card spares, 4 bayonet sockets, 5 connecting pins, 6 secondary fasteners, 7 linking arms, 8 apical grafting heads, 9 hydraulic jacks, 10 arc-shaped slots, 11 openings.

The specific embodiment

As shown in the figure, be hydraulic spanner, comprise main card spare 3, secondary fastener 6, apical grafting head 8, hydraulic jack 9 and staight shank spare 1, main card spare 3 and secondary fastener 6 all are circular arc, be connected through connecting pin 5 between both two ends, make to form the bayonet socket 4 that can hold bolt head or nut between the concave profile of main card spare 3 and secondary fastener 6, connecting pin 5 is made dismountable structure; Main card spare 3 is provided with a linking arm 7, and main card spare 3 upper and lower surfaces also are arranged with arc raised line 2; Linking arm 7 is hinged with apical grafting head 8, and hydraulic jack 9 one ends and staight shank spare 1 are hinged, and the other end is connected with linking arm 7; The phase that staight shank spare 1 is provided with bayonet socket 11, two bayonet sockets 11 that extend to the middle part from its end is provided with arc-shaped slot 10 to the inside, and described main card spare 3 inserts in the bayonet socket 11, and arc raised line 2 sets and snaps in the arc-shaped slot 10.

During work, the tail end of staight shank spare 1 is ridden on a certain fixture, make its maintenance motionless, and bayonet socket 4 is snapped on the turret head of nut or bolt; During original state, the plunger of hydraulic jack 9 is positioned at cylinder body, hydraulic jack 9 oil-feeds, plunger stretches out and drives 3 rotations of main card spare, nut or bolt can be tightened or unclamp certain angle, as nut or bolt as yet motion put in place, the hydraulic oil of hydraulic jack 9 can be discharged, take off this device, make hydraulic jack 9 return to original state, be connected to once more on the turret head of nut or bolt, hydraulic jack 9 can move once more, nut or bolt are turned an angle once more, so repeatedly, nut or bolt can be unclamped or tighten.

If the bolt head space is less, make hydraulic spanner connecting pin 5 can not unloaded when bolt head is socketed on the turret head, be socketed in from the side on the turret head, again connecting pin 5 is in place, can tighten or unclamp nut or bolt.

Claims

1, hydraulic spanner, it is characterized in that comprising main card spare, secondary fastener, apical grafting head, hydraulic jack and staight shank spare, main card spare and secondary fastener all are circular arc, be connected through connecting pin between both two ends, make and form the bayonet socket that can hold bolt head or nut between the concave profile of main card spare and secondary fastener; Main card spare is provided with a linking arm, and main card spare upper and lower surface also is arranged with the arc raised line; Linking arm and apical grafting head are hinged, and hydraulic jack one end and staight shank spare are hinged, and the other end is connected with linking arm; Staight shank spare is provided with the opening that extends to the middle part from its end, and the phase of two openings is provided with arc-shaped slot to the inside, and described main card spare inserts in the opening, and the arc raised line sets and snaps in the arc-shaped slot.