CN201475132U

CN201475132U - Bolt tightening device and special wrench

Info

Publication number: CN201475132U
Application number: CN200920190887XU
Authority: CN
Inventors: 陆昱森; 陆颂荫
Original assignee: NINGBO YOURJAI TRANSFORMER CO Ltd
Current assignee: NINGBO YOURJAI TRANSFORMER CO Ltd
Priority date: 2009-08-06
Filing date: 2009-08-06
Publication date: 2010-05-19
Anticipated expiration: 2019-08-06

Abstract

The utility model discloses a bolt tightening device and a special wrench. The bolt tightening device comprises a bolt (1) and a nut (2), wherein the bolt (1) consists of a bolt cap (1.1) and a screw rod (1.2), and at least two radial blind holes (30 are arranged on the outer circumference of the bolt cap 91.1); and at least two radial blind holes (3) are arranged on the outer circumference of the nut (3). The bolt tightening device is difficult to be abraded, deformed and to slide and has good antitheft performance. The special wrench comprises a handle (4) and a wrench head (5), wherein the shape of the wrench head (5) is of an arc shape which is matched with the outer circumference of the screw cap (1.1) or the nut (2), and the inner wall of the wrench head (5) is provided with two positioning pins (5.1) which are matched with the radial blind holes (3). When opening or locking the bolt and the nut, the acting force of the wrench is scattered on the outer circumference of the bolt cap and the nut, the acting force of the positioning pin on the radial blind hole is small, and the radial blind hole is difficult to be abraded and deformed.

Description

Bolt clamp device and special spanner

Technical field

The utility model relates to a kind of fastening piece and special tool, relates in particular to a kind of bolt clamp device and special spanner.

Background technique

Present common bolt and nut, such as a word bolt, cross bolt or hex head bolt nut or the like, in use there is following shortcoming: at first, the force position of nuts is few, after repeatedly using, one word groove or the easy abrasion deformation of cross recess skid, and the hex head bolt nut also is the same, after using for a long time or repeatedly, the also easy abrasion deformation of its nuts skids, even use special spanner also to be difficult to its unlatching or locking, secondly, a common word bolt, the opener of cross bolt and hex head bolt nut is also comparatively extensive, and one almost can open the hex head bolt nut of all models to common adjustable spanner, and the theftproof performance of this bolt and nut is relatively poor.

The model utility content

The technical problems to be solved in the utility model is that a kind of bolt clamp device that abrasion deformation skids, theftproof performance is good that is difficult for is provided.

The technical solution of the utility model is, a kind of bolt clamp device with following structure is provided, comprise bolt and the nut that matches with it, described bolt is made up of nuts and screw rod, and the excircle of described nuts is provided with at least two circumferential radial blind holes; The excircle of described nut is provided with at least two circumferential radial blind holes.

Another technical problem to be solved in the utility model is, a kind of special spanner that is used for above-mentioned bolt clamp device is provided, comprise handle and driving end, described driving end be shaped as the arc that the excircle with the excircle of screw cap or nut matches, the inwall of described driving end is provided with two locating studs that match with radial blind holes.

After adopting above structure, the utility model compared with prior art has following remarkable advantage and has a mind to effect: because the excircle of described nuts is provided with at least two circumferential radial blind holes; The excircle of described nut is provided with at least two circumferential radial blind holes, thereby can only can screw by wherein two blind holes on locating stud inserting bolt cap on the special spanner or the bolt the utility model bolt and nut is opened or locking.Spanner is when unlatching or locking screw screw bolt and nut, its active force is dispersed in the outer peripheral surface of nuts and the outer peripheral surface of nut, locating stud is less to the active force of blind hole radially, radial blind holes is difficult for abrasion deformation, thereby make stronger resistance to deformation of having of screw bolt and nut and the anti-ability of skidding, in addition, the utility model uses special spanner to open, theftproof performance is good, is difficult for losing.

As improvement, the radial blind holes quantity of described nuts is at least three, makes things convenient for special spanner to select a plurality of angles to screw.

As further improvement, on the described nuts adjacent every pair radially the arc length between the blind hole equate that two blind holes that make things convenient for special spanner can choose at random are wherein screwed.

As improvement, the radial blind holes quantity of described nut is at least three, makes things convenient for special spanner to select a plurality of angles to screw.

As further improvement, on the described nut adjacent every pair radially the arc length between the blind hole equate.Two blind holes that make things convenient for special spanner can choose at random are wherein screwed.

As improvement, described radial blind holes is the little cone shape hole of outer imperial palace, skids when strip class instrument is inserted, and theftproof performance is better.

Description of drawings

Accompanying drawing 1 be model utility the exploded perspective view of bolt clamp device.

Accompanying drawing 2 is the schematic representation after bolt clamp device of the present utility model cooperates;

Accompanying drawing 3 is the A-A generalized section of Fig. 2;

Accompanying drawing 4 is the structural representation of the special spanner of bolt clamp device of the present utility model.

As shown in the figure: 1, bolt, 1.1, nuts, 1.2, screw rod, 2, nut, 3, radial blind holes, 4, handle; 5, driving end; 5.1, locating stud.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As Fig. 1, Fig. 2, shown in Figure 3, bolt clamp device of the present utility model, the nut 2 that comprises bolt 1 and match with it, described bolt 1 is made up of nuts 1.1 and screw rod 1.2, and the excircle of described nuts 1.1 is provided with at least two circumferential radial blind holes 3; Radial blind holes 3 quantity of present embodiment are four, and described radial blind holes 3 evenly distributes along nuts 1.1 circumference, on the promptly described nuts 1.1 adjacent every pair radially the arc length between the blind hole 3 equate and be 90 degree.The excircle of described nut 2 is provided with at least two circumferential radial blind holes 4, present embodiment radial blind holes 4 quantity are at least four, described radial blind holes 4 evenly distributes along nut 2 circumference, on the promptly described nut 2 adjacent every pair radially the arc length between the blind hole 4 equate and be 90 degree.

Described radial blind holes 3 and radial blind holes 4 are the little cone shape hole of outer imperial palace.

As shown in Figure 4, thus the radial blind holes 3 of 5.1 inserting bolts 1 of the locating stud on the special spanner 5 or the radial blind holes 4 on the nut 2 can be screwed bolt 1 or nut 2 with its unlatching or locking.

According to general knowledge, bolt 1 and nut 2 need be furnished with a special spanner respectively during work, with the radial blind holes 3 on 5.1 inserting bolts 1 of the locating stud on the special spanner and the nut 2, the excircle that the driving end 5 of arc encases the excircle of nuts 1.1 and nut 2 can screw bolt 1 and nut 2 is opened the utility model bolt clamp device or locking then.

Clearly, the foregoing description is preferred embodiment, wherein the excircle of the excircle of nuts 1.1 and nut 2 is measure-alike, but claim of the present utility model is not limited thereto, the bolt 1 in the utility model bolt clamp device and the size of nut 2 are unfixing, the structure of the radial blind holes 3 on the radial blind holes 3 on the nuts 1.1 and the nut 2 also can be different, be used to screw the special spanner of bolt 1, the excircle of the shape of its driving end 5 and nuts 1.1 matches, on its inwall the shape of locating stud 5.1 then the radial blind holes on nuts 1.1 3 match; Be used to screw the special spanner of nut 2, the excircle of the shape of its driving end 5 and nut 2 matches, on its inwall the shape of locating stud 5.1 then the radial blind holes on nut 23 match.

Claims

1. bolt clamp device, the nut (2) that comprises bolt (1) and match with it, described bolt (1) is made up of nuts (1.1) and screw rod (1.2), it is characterized in that: the excircle of described nuts (1.1) is provided with at least two circumferential radial blind holes (3); The excircle of described nut (2) is provided with at least two circumferential radial blind holes (3).

2. bolt clamp device according to claim 1 is characterized in that: radial blind holes (3) quantity of described nuts (1.1) is at least three.

3. bolt clamp device according to claim 2 is characterized in that: on the described nuts (1.1) adjacent every pair radially the arc length between the blind hole (3) equate.

4. according to claim 1 or 2 or 3 described bolt clamp devices, it is characterized in that: radial blind holes (3) quantity of described nuts (1.1) is four, and described radial blind holes (3) evenly distributes along nuts (1.1) circumference.

5. bolt clamp device according to claim 1 is characterized in that: radial blind holes (3) quantity of described nut (2) is at least three.

6. bolt clamp device according to claim 4 is characterized in that: on the described nut (2) adjacent every pair radially the arc length between the blind hole (3) equate.

7. according to claim 1 or 5 or 6 described bolt clamp devices, it is characterized in that: radial blind holes (3) quantity of described nut (2) is four, and described radial blind holes (3) evenly distributes along nut (2) circumference.

8. bolt clamp device according to claim 1 is characterized in that: described radial blind holes (3) and radial blind holes (4) are the little cone shape hole of outer imperial palace.

9. special spanner that is used for the described bolt clamp device of claim 1, comprise handle (4) and driving end (5), it is characterized in that: described driving end (5) be shaped as the arc that the excircle with the excircle of screw cap (1.1) or nut (2) matches, the inwall of described driving end (5) is provided with two locating studs (5.1) that match with radial blind holes (3).