CN2386923Y

CN2386923Y - Stud ejector

Info

Publication number: CN2386923Y
Application number: CN 99239402
Authority: CN
Inventors: 吴江南
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-26
Filing date: 1999-08-26
Publication date: 2000-07-12
Anticipated expiration: 2009-08-26

Abstract

The utility model relates to a disassembling device of double-head bolts, which comprises an outer sleeve, a keeping rack and wedge-shaped tooth blocks, wherein, the peripheral surface of an inner hole of the outer sleeve is provided with a plurality of arc-shaped slots with concave curved surfaces. The peripheral surface of the keeping rack is provided with a plurality of windows and a first groove provided with an opening annular spring and arranged in the outer sleeve. Each wedge-shaped tooth block is provided with an arc-shaped outer surface and an inner tooth surface and is arranged in the windows of the keeping rack. When the outer sleeve correspondingly rotates to the keeping rack, the outer surface of each wedge-shaped tooth block correspondingly shifts with the slots with concave curved surfaces of the outer sleeve to enter the slots with concave curved surfaces. The opening annular ring enables each wedge-shaped tooth block to return to an original position. The disassembling device has the advantages of reasonable and advanced structure, rapid and reliable double-head bolt disassembly, light weight, small size, portability, etc.

Description

Stud remover

The utility model relates to a kind of dismounting equipment of bolt, particularly the stud remover of relevant a kind of detachable stud.

Industrial have much must dismounting studs, those studs have used sizable moment of torsion in addition when mounted because high temperature and weather environment get rusty, and make to dismantle stud and become heavy and difficult work.

At present, do not have a kind of utensil and the method that can dismantle a little hook bolts of those pairs effectively, and often adopt traditional methods such as gas cutting to be handled, always cause bolt failure, the take-down time is long, often damages body again.

The purpose of this utility model is to provide a kind of stud remover that very makes things convenient for and dismantle reliably stud.

Technical scheme for achieving the above object is: a kind of stud remover, comprise an overcoat, one spring flange, one retainer, some wedge-like block teeth, wherein, described overcoat endoporus side face is provided with a plurality of arc concave curved surface grooves, described retainer side face is provided with plurality of windows, and to keep concentric with overcoat and rotary way is placed in the overcoat, the outer surface and one that each wedge-like block teeth has an arc contains the inner toothed surface of the circular arc of internal tooth, it is placed in the window of retainer separately, and the wedge-like block teeth can be entered by the rotation of overcoat in the concave curved surface groove of overcoat.

Stud remover as previously discussed, wherein, describedly outer be enclosed within it and have one down and connect with endoporus and the diameter through hole littler than diameter of bore is formed with a convex shoulder in the bottom of endoporus, form one in the lower end of through hole and have 12 jiaos slot, the bottom of described retainer is positioned on the convex shoulder.

Stud remover as previously discussed, wherein, the thickness at the two ends of described wedge-like block teeth is with certain quantity attenuate gradually from the end to end of cambered surface, the concave curved surface groove of described overcoat from a side of endoporus side face to opposite side relatively the distance of its central axis increase gradually, and the outer surface of wedge-like block teeth has identical radius of curvature with the groove bottom of the concave curved surface groove of overcoat.

Stud remover as previously discussed, wherein, described retainer radial surface within it is provided with first groove, and this stud remover also comprises an opening ring-spring, and this opening ring-spring is arranged in first groove of retainer in the mode of setting.

Stud remover as previously discussed, wherein, described each wedge-like block teeth laterally are provided with one second groove on inner toothed surface, in the time of in the window that the wedge-like block teeth is arranged to retainer, and second groove of described wedge-like block teeth and the engagement of the part of its opening opposing ring-spring.

Stud remover as previously discussed, wherein, the endoporus side face of described overcoat be positioned at the concave curved surface groove above be provided with circlip groove, described spring flange is installed in the circlip groove, and its internal diameter is less than the external diameter of retainer.

Stud remover as previously discussed, wherein, the concave curved surface groove of described overcoat, the window of retainer and wedge-like block teeth are two.

Therefore, stud remover of the present utility model is taked to be provided with the concave curved surface groove on overcoat endoporus side face, install respectively in the window of retainer and first groove and have an outer surface of circular arc and the wedge-like block teeth and the opening ring-spring of an inner toothed surface, retainer is installed in the overcoat together with the wedge-like block teeth, so, when the relative retainer of overcoat rotates, the concave curved surface groove relative displacement of the outer surface of wedge-like block teeth and overcoat and entering in the concave curved surface groove, opening ring-spring one makes the wedge-like block teeth be returned to the origin-location, this stripping attachment is a kind of stud special implement of novelty, it is rationally advanced to have structure, the dismounting stud is extremely convenient, fast with reliable, the light weight body is little, and advantage such as be easy to carry.

Below will and be described in detail structure of the present utility model and effect in conjunction with the accompanying drawings by most preferred embodiment.In the accompanying drawings:

Fig. 1 is that the solid of each parts of the present utility model is decomposed organigram;

Fig. 2 is the profile of the utility model after assembling, and expression wedge-like block teeth turn to the situation that can catch the stud position;

Fig. 3 is the same with Fig. 2 to be the profile of the utility model after assembling, has shown the situation of wedge-like block teeth after stud is unclamped in the overcoat the inside.

See also shown in Figure 1, stud remover of the present utility model comprises an overcoat 11, one retainer 23, some wedge-like block teeth 35, one spring flange 49, wherein, overcoat 11 is that a periphery is the tubular element of scalariform, has an axial bore 13 that diameter is bigger on it, it has its diameter through hole 17 littler than endoporus 13 diameters of overcoat 11 down, endoporus 13 forms a convex shoulder 15 in its underpart, above it is positioned at convex shoulder 15, be formed with two and be the concave curved surface groove of circular arc or the concave curved surface groove 19 of arc, above being positioned at concave curved surface groove 19, it is provided with an annular retaining ring groove 51, described two concave curved surface grooves 19 are endoporus 13 inwalls on the arc transition surface that radius in the radial direction enlarges gradually, has same size, and be arranged to the antisymmetry form, the arcuate transition surfaces of concave curved surface groove 19 is held 19a apart from the center line farthest radially of overcoat 11 for footpath far away, hold 19b for nearly footpath the most nearby, the end face 21 of a level is all arranged at the top of each concave curved surface groove 19, described through hole 17 is in convex shoulder below 15 usually, the length in its hole is 2 feet or longer, and be provided with a polygon slot (not shown) in its lower end, this polygon slot can rotate overcoat 11 by the plant throw, and transmits torsion.

Retainer 23 is tube-in-tube structures of steel, be cylindric, has an endoporus 25, on the top of its outer peripheral face, be provided with a flange boss 29, the middle part offers two rectangular windows 27, the upper and lower surface of this rectangular window is parallel to each other and perpendicular to adjacent side, and retainer 23 respectively is provided with one first groove 31 on the inner peripheral surface of rectangular window 27 both sides, and this first groove is actually each discontinuous part of an annular groove.Retainer 23 is inserted in the endoporus 13 of overcoat 11, and its bottom can be located on convex shoulder 15 sides of endoporus.

Spring 33 is ring-springs of the strong elasticity of metal, and an opening is arranged, and is snap-fit in first groove 31, and spring 33 can uphold and shrink, and is the spreading state after it is arranged in first groove 31, but is subjected to the constraint of first groove 31 to it.So, the retainer 23 that spring 33 is housed can be inserted in the endoporus 13 of overcoat 11, and the lower surface of retainer 23 is located on the convex shoulder 15 rotationally.

Each wedge-like block teeth 35 is the arc voussoir, left end is that heavy section 43, right-hand member are thinner wall section 45, wall thickness is with curve attenuate gradually from left to right, its outer surface 37 have with endoporus 13 inwalls on the outer surface or the identical radius of curvature of arcuate transition surfaces of circular arc, its inner surface 39 has an arc or a circular arc inner toothed surface 41 that is provided with many teeth, and this inner toothed surface bending radius is the bolt radius.And second groove 47 of or local ring-type set on inner toothed surface 41 centre positions, horizontal perpendicular to the central axis and of retainer 23.Wedge-like block teeth 35 are placed in the rectangular window 27 of retainer 23 separately, and second groove 47 on its inner toothed surface is fastened with spring 33 or mesh, and wedge-like block teeth 35 also flexibly are arranged in rectangular window 27 by spring 33, make to be in state pushed outwards usually.

Check ring 49 is a split washer, positions in the circlip groove 51 on concave curved surface groove 19 upper edges 21 of packing into, and at this moment, the flange boss 29 of retainer is between concave curved surface groove 19 upper edges 21 and the check ring 49.Stud remover is to be placed on screw rod or the stud with the direction opposite with Fig. 1 under operating position, and the end of the flange boss 29 of retainer 23 is resisted against on the check ring 49.Overcoat 11 will make overcoat 11 do counterclockwise to rotate under the elastic force effect of external force and spring 33, make retainer 23 do limited rotating relative to overcoat 11, the outer surface of wedge-like block teeth 35 is in the outer end 19a position of concave curved surface groove 19, and engagement relatively, as shown in Figure 3.When overcoat 11 overcomes the elastic force effect of spring 33 under external force and does the clockwise direction rotation, wedge-like block teeth 35 are moved to the inside end 19b of concave curved surface groove 19, tooth by its inner toothed surface 41 is bitten screw rod or stud, unscrew or is unscrewed and up to back-out, as shown in Figure 2 from installing on the object simultaneously.

See also shown in Fig. 2 and 3, why wedge-like block teeth 35 are made into two-end thickness is not both because will adapt to the profile on concave curved surface groove 19 surfaces, when wedge-like block teeth 35 are mobile in concave curved surface groove 19, when the position of Fig. 3 moves to the position of Fig. 2, when wedge-like block teeth 35 move inwards, the result is that the inner toothed surface 41 of wedge-like block teeth 35 is bitten screw rod or stud (not shown) by tooth, wherein, the tooth of wedge-like block teeth 35 is bitten screw rod or stud interlock width is the width of wedge-like block teeth 35.On the contrary, wedge-like block teeth 35 move inward, and the circular arc inner surface of wedge-like block teeth inner toothed surface 41 is consistent with inner surface 25 diameters of retainer 23.

In actual applications, the user is enclosed within overcoat 11 on the stud that will dismantle, the cylindrical bar of bolt partly is positioned among the wedge-like block teeth 35, the threaded portion of stud should be lower than minor diameter through hole 17, the user can connect the instrument with rotary power, connect the lower surface of overcoat 11 as the Pneumatic immpacting spanner, can insert (not shown) in the polygonal slot of overcoat 11 lower surfaces, finish this work by driving head with percussion tool.For example, come rotary sleeve 11 by opening pneumatic tool, rotation will be quite at a high speed.The inertia of retainer 23 and wedge-like block teeth 35 makes overcoat 11 with respect to retainer 23 a certain amount of rotation be arranged, and utilizes retainer 23 to slide with respect to overcoat 11 like this.The result is that wedge-like block teeth 35 slide on concave curved surface groove 19 bottom surfaces, slides to inside end 19b position shown in Figure 2 from the outer end 19a position of Fig. 3.Wedge-like block teeth 35 are when interior location, spring 33 is stuck in second groove 47 of wedge-like block teeth 35, and protrude in first groove 31 of retainer 23, at this moment, wedge-like block teeth 35 parts are positioned in the rectangular window 27 of retainer 23, and inner toothed surface 41 and stud interlock make stud rotate with overcoat 11, just detachable stud does not damage stud and machine body simultaneously.Finish this work.

In most preferred embodiment of the present utility model, the external form of overcoat is made a boss or notch cuttype with weight reduction, and jacket bottom is processed into 12 jiaos slot, and total compactness, reliable dismantle only need 1～2 minute of a stud.But the utility model does not limit to the mechanism parameter of the foregoing description, for example can increase quantity, change appearance and size and the shape etc. of concave curved surface groove, rectangular window, wedge-like block teeth, and not change the essence of an invention content.

Claims

1. stud remover, it is characterized in that: comprise an overcoat, a spring flange, a retainer, some wedge-like block teeth, wherein, described overcoat endoporus side face is provided with a plurality of arc concave curved surface grooves, described retainer side face is provided with plurality of windows, and to keep concentric with overcoat and rotary way is placed in the overcoat, the outer surface and one that each wedge-like block teeth has an arc contains the inner toothed surface of the circular arc of internal tooth, it is placed in the window of retainer separately, and the wedge-like block teeth can be entered by the rotation of overcoat in the concave curved surface groove of overcoat.

2. stud remover according to claim 1, it is characterized in that: describedly outer be enclosed within it and have one down and connect and the diameter through hole littler than diameter of bore with endoporus, be formed with a convex shoulder in the bottom of endoporus, form one in the lower end of through hole and have 12 jiaos slot, the bottom of described retainer is positioned on the convex shoulder.

3. stud remover according to claim 1, it is characterized in that: the thickness at the two ends of described wedge-like block teeth is with certain quantity attenuate gradually from the end to end of cambered surface, the concave curved surface groove of described overcoat from a side of endoporus side face to opposite side relatively the distance of its central axis increase gradually, and the outer surface of wedge-like block teeth has identical radius of curvature with the groove bottom of the concave curved surface groove of overcoat.

4. stud remover according to claim 1, it is characterized in that: described retainer radial surface within it is provided with first groove, this stud remover also comprises an opening ring-spring, and this opening ring-spring is arranged in first groove of retainer in the mode of setting.

5. stud remover according to claim 4, it is characterized in that: described each wedge-like block teeth laterally are provided with one second groove on inner toothed surface, in the time of in the window that the wedge-like block teeth is arranged to retainer, second groove of described wedge-like block teeth and the engagement of the part of its opening opposing ring-spring.

6. stud remover according to claim 1 is characterized in that: the endoporus side face of described overcoat be positioned at the concave curved surface groove above be provided with circlip groove, described spring flange is installed in the circlip groove, and its internal diameter is less than the external diameter of retainer.

7. according to each described stud remover of claim 1 to 6, it is characterized in that: the concave curved surface groove of described overcoat, the window of retainer and wedge-like block teeth are two.