CN2803628Y - Special tool of lock nut - Google Patents

Abstract

The utility model discloses a special tool of lock nuts, which is disclosed for overcoming the defects of tight lock of a bearing inner hole inward expanding type lock sleeve, easy side slip of a hammer when the hammer strikes a hook head wrench which is hooked with the nut so as to cause the lock nut and a retreat stopping retainer ring to be discarded, low work efficiency and unsafe performance. The utility model can be sheathed on an inner hole wall of an annular body of a top circle of the lock nut. Triggers pins which are uniformly distributed and are capable of inserting in a lock port of the lock nut are fixed in the inner hole well of the annular body in a circumambient mode. The circumference of the outer wall of the annular body is uniformly distributed and fixed with handles. When the tool is used, the utility model does not need to be held by hands and results in the problem of the side slip. When the annular body is provided with a top screw to prop the lock, the utility model is safer. The tool does not damage the lock nut and the retreat stopping retainer ring, reduces parts consumption, also does not cause any harm of human bodies, has the advantages of high work efficiency, high safety and reliable locking bearings and ensures work precision of rolling drums.

Description

The locking nut specific purpose tool

Technical field

The utility model belongs to instrument, and specifically a kind of locking nut that turns is to the specific purpose tool of bearing locking on spindle nose that has the internal-expansion type lock sleeve.

Background technology

The harbour cylinder of LARGE SIZED, the bearing of installing on its two ends spindle nose all adopts the biserial ball anti-friction bearing of automatic aligning, bearing and the mounting means of cylinder spindle nose of band internal taper hole be, the cylindrical taper is installed in the diameter of axle of spindle nose and brearing bore centre, axially the internal-expansion type lock sleeve of breathing mouth arranged.During installation, turn the locking nut on the screw thread of lock sleeve outer end, pulling internal-expansion type lock sleeve makes bearing locking on the diameter of axle, makes the cylinder can smooth rotation.

For guaranteeing the operating accuracy of cylinder, the pretightning force of brearing bore internal-expansion type lock sleeve upper locking nut must reach more than 70 kgfs.Prior art generally adopts and takes hook-headed wrench to collude on the fore shaft of locking nut on the other hand in the locking process of locking nut, the locking mode of the hammer knocking hook-headed wrench handle of putting on airs on the other hand.In operating process, the gib head that hook-headed wrench often occurs breaks away, and the fore shaft of major injury locking nut and the retaining back-up ring that leans against nut end face cause parts to scrap, and have strengthened maintenance cost; Moreover spend when big when impact force, staff is controlled when incessantly pinch bar drops, and also can damage the person.Therefore, above-mentioned locking mode has not only increased the consumption of parts, and inefficiency also exists potential safety hazard.

The utility model content

Technical problem to be solved in the utility model, be to overcome existing the lock to tighten locking nut with hook-headed wrench, the handle that hammering is colluded on the nut fore shaft easily breaks away, cause the damage of locking nut and retaining back-up ring to scrap, and low, the unsafe shortcoming of work efficiency, a kind of locking nut specific purpose tool is provided.

In order to solve the problems referred to above that prior art exists, the utility model is to adopt following technical proposals to realize: on the annular solid inner hole wall that can be enclosed within on the locking nut cylindrical, around annular solid endoporus hole wall be fixed with uniform, can insert the finger in the locking nut fore shaft, the uniform handle that is fixed with in the border of annular solid outer wall.

The utility model also has following key character:

Be laid with screw on the wall of annular solid border, its center line points to the center of annular solid endoporus;

The handle that described annular solid border is fixing is uniform 2-6;

Not crooked when being enclosed within on the locking nut cylindrical for annular solid with instrument, be provided with the catch that can lean against the nut lateral surface at the interior nose end of annular solid;

Described catch is uniform 2-3 sheet.

During use, the annular solid of described instrument is enclosed within on the locking nut periphery that is installed on the internal-expansion type lock sleeve, finger on its endoporus is inserted in the fore shaft of locking nut, and its locating stop piece is leaned against on the outer side plane of locking nut, fixedly the screw that screws on the annular solid of the jackscrew of usefulness withstands locking nut simultaneously, this moment, annular solid and locking nut were fixed together, and beat the handle on the annular solid, can make locking nut spur internal-expansion type lock sleeve locking bearing reposefully.

Advantage of the present utility model and good effect are, because the annular solid of band handle has finger to insert the fore shaft of locking nut, catch leans against the lateral surface of nut and sets upright the location, also have jackscrew to withstand locking nut it is mounted to one, avoided using hook-headed wrench to need the hand steered problem of holding and breakking away of human fully, protected locking nut and retaining back-up ring to be without prejudice, also can not cause any injury human body; When if the outer handle of the annular solid of instrument is a plurality of, the instrument one-time positioning can be implemented in a plurality of angles and knock a plurality of handles that rotate with nut, realization is convenient and do not knock locking with having the dead angle, has avoided existing problem with hook-headed wrench frequent changes fore shaft in the locking process.Above-mentioned instrument has reduced the consumption of parts, and high efficiency is safe in utilization, the locking bearing is reliable, has guaranteed the operating accuracy of cylinder.

Description of drawings

Fig. 1 looks schematic diagram for master of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

Fig. 3 is the local B-B cross-sectional schematic of Fig. 2;

Fig. 4 is a user mode schematic diagram of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Among Fig. 1, on endoporus can be enclosed within annular solid 1 inner hole wall on locking nut 8 cylindricals, perpendicular to hole wall around being fixed with the finger 2 (referring to Fig. 2, Fig. 3, Fig. 4) that can insert in locking nut 8 fore shafts 8.1, the number of finger 2 is fixed with fore shaft 8.1 numbers of locking nut 8, fore shaft more than 8.1 can be to be provided with at interval, be at least relative two; On the outer wall of annular solid 1, be fixed with handle 1.2, handle 1.2 can be a pair of, for the ease of when twisting locking nut 8, after instrument turns an angle with its fore shaft 8.1, still the handle 1.2 that can pound with a hammer easily, handle 1.2 can be 2 to 6, can decide number according to the size of locking nut 8 external diameters and surrounding space.

For the annular solid 1 that makes instrument be enclosed within on the locking nut 8 fixing do not need hand steered, on the outer wall of annular solid 1, be laid with and be screwed into the fixedly screw 1.1 of jackscrew, its center line points to the center of annular solid 1 endoporus, during installation fixedly jackscrew 1.3 pass screw 1.1 and hold out against on the cylindrical of locking nut 8.

Among Fig. 2, Fig. 3, do not produce deflection when being enclosed within on the cylindrical of locking nut 8 for the annular solid 1 with instrument, on the end face on the endoporus right side of annular solid 1, be provided with the locating stop piece 3 that can lean against locking nut 8 lateral surfaces, its locating stop piece 3 is advisable with uniform 2-3 sheet.

Among Fig. 4, the annular solid 1 of instrument is enclosed within on the periphery that is installed on tapered bore bearing 5 internal-expansion type lock sleeves 6 upper locking nuts 8, between locking nut 8 and the bearing 5 retaining back-up ring 7 is installed, finger 2 on its endoporus is inserted in the fore shaft 8.1 of locking nut 8, and its locating stop piece 3 is leaned against on the plane, right side of locking nut 8, simultaneously jackscrew 1.3 is screwed in screw 1.1 and withstand locking nut (referring to Fig. 1, Fig. 2), this moment, annular solid 1 installed and fixed together with locking nut 8.

Claims (5)

1, a kind of locking nut specific purpose tool, comprise handle, it is characterized in that: on the annular solid inner hole wall that can be enclosed within on the locking nut cylindrical, around annular solid endoporus hole wall be fixed with uniform, can insert the finger in the locking nut fore shaft, the uniform handle that is fixed with in the border of annular solid outer wall.

2, locking nut specific purpose tool as claimed in claim 1 is characterized in that: be laid with screw on the wall of annular solid border, its center line points to the center of annular solid endoporus.

3, locking nut specific purpose tool as claimed in claim 1 is characterized in that: the handle that described annular solid border is fixing is uniform 2-6.

4, locking nut specific purpose tool as claimed in claim 1 is characterized in that: the interior nose end at annular solid is provided with the locating stop piece that can lean against the nut lateral surface.

5, locking nut specific purpose tool as claimed in claim 4 is characterized in that: described locating stop piece is uniform 2-3 sheet.

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