CN2902585Y

CN2902585Y - Wrench socket for fast connecting nut

Info

Publication number: CN2902585Y
Application number: CN 200620041863
Authority: CN
Inventors: 宋正忠; 骆子鸣
Original assignee: No2 Factory Attached To Shanghai Technology Univ
Current assignee: SHANGHAI RUINIU MACHINERY & EQUIPMENT MANUFACTURE CO., LTD.
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2007-05-23
Anticipated expiration: 2016-05-18

Abstract

The utility model discloses a wrench socket convenient for fast connecting of a screw nut comprising a hollow columnar socket body, the hollow interior cylindrical surface is provided with a group of flat surface and curved surface sequentially connected, the flat surface and curved surface form a working configuration of the socket, and the working configuration is formed through removing the material of the interior cylindrical surface of the hexagonal socket, wherein the inwardly convex cylindrical surface of the working configuration is contacted with an external prismatic surface of the screw nut to apply tighten force or loosen force to the screw nut. The distance E from the centre of gyration of the working configuration to either inwardly convex cylindrical surface is less than the size e of the screw nut. A gap is formed between the outwardly sunken cylindrical surface of the working configuration and the screw nut when the utility model is working, the sunken forms a space of angle theta which allows the screw to rotate around the centre of gyration of the working configuration in the socket, and the range of theta is 0 degree < theta < 60 degrees. The angle helps the socket fast connect with and separate from the hexagonal nut in the state of rotating. That E <= e can effectively prevent the screw from slipping and jamming in the wrench socket.

Description

Be convenient to the wrench socket that nut connects fast

Technical field

The utility model relates to a kind of hex nut wrench socket, and especially a kind of being used for connects and the wrench socket that separates fast with hex nut under the rotation status, is applicable to the track wrench device of railroad sleeper screw spike with the clamp nut demolition, installation.

Background technology

Be used to tighten, unscrew the wrench socket of railroad sleeper screw spike at present with clamp nut, its working profile shape is all close with nut gabarit shape, 1. its ubiquitous shortcoming has as shown in Figure 1, usually the size E of the working profile of regular polygon type wrench socket (centre of gyration is to the distance on any limit) must be greater than the size e (distance of the extremely any prismatic surface of the centre of gyration of nut, double dot dash line or dotted line are depicted as nut gabarit shape), otherwise nut can not insert the working profile of wrench socket; 2. in order to guarantee that nut can insert the working profile of wrench socket smoothly, must make E 〉=e as shown in Figure 2,, can occur again skidding or wrench socket and the stuck phenomenon of nut if E is big more too many than e.

Summary of the invention

The utility model is will solve existing to tighten, unscrew the railroad sleeper screw spike with the problem that the wrench socket of clamp nut exists, provide a kind of be beneficial to nut insert the wrench socket working profile and tighten, be difficult for when unscrewing nut skidding, stuck wrench socket.

The technical solution of the utility model is achieved in that under a kind of rotation status and connects and the wrench socket that separates fast with hex nut, the cylindrical sleeve body that comprises hollow, on the inner cylinder of hollow, have one group of plane that connects successively and curved surface, plane and curved surface constitute the working profile of sleeve, the plane and the curved surface that constitute the sleeve working profile are to form by the material of removing the Hexagonal jacket inner cylinder, wherein the outer prismatic surface of the inwardly protruded cylinder of working profile and nut contacts, and is used for nut is applied the power of tightening or unscrewing; The centre of gyration of working profile to arbitrary inwardly protruded cylinder apart from the size e of E less than nut; Wherein gapped between the cylinder of the outside depression of working profile when work and nut, be recessed to form a space that provides nut that one rotational angle θ is arranged around the working profile centre of gyration in sleeve, the scope of angle θ: 0 °＜θ＜60.In the working profile outer face along an oblique angle is arranged on the inner periphery.

Characteristics of the present utility model are: nut can rotate an angle θ, the scope of θ angle around the centre of gyration of working profile in working profile: 0 °＜θ＜60 °, this angle helps sleeve and connects fast and separate with hex nut under rotation status; The centre of gyration of working profile can be less than the size e of nut apart from E to arbitrary inwardly protruded cylinder, and nut still can insert the working profile of spanner wrench socket smoothly like this, and E≤e can prevent effectively that nut from skidding or be stuck in wrench socket.

Description of drawings

Fig. 1 is the existing nut spanner sleeve working profile shape schematic diagram close with nut gabarit shape;

Fig. 2 is that nut skids or wrench socket and nut stuck phenomenon schematic diagram when having the use of nut spanner sleeve now;

Fig. 3 is a perspective view of the present utility model;

Fig. 4 is a working profile schematic diagram of the present utility model;

Fig. 5 is that the utility model is removed the schematic diagram that forms behind the part material on existing nut spanner sleeve;

Fig. 6 is the utility model embodiment schematic diagram;

Nut rotation space schematic diagram when Fig. 7 is existing nut spanner sleeve E＞e;

Nut rotation space schematic diagram when Fig. 8 is the utility model E=e.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

To shown in Figure 4, a kind of be convenient to the wrench socket that nut connects fast as Fig. 3, comprise the cylindrical sleeve body of hollow, have one group of plane that connects successively and curved surface on the inner cylinder of hollow, these planes and curved surface constitute the working profile of sleeve.Constitute the plane of sleeve working profile and curved surface and be (shown in Figure 5) that the part material 1 of the sleeve inner cylinder by removing prior art forms.Wherein the outer prismatic surface of the inwardly protruded cylinder 2 of working profile and nut contacts nut is applied the power of tightening or unscrewing, the centre of gyration of working profile can be less than the size e of nut apart from E to arbitrary inwardly protruded cylinder, nut still can insert the working profile (shown in Figure 6) of spanner wrench socket smoothly like this, and can not take place that wrench socket and nut skid or stuck phenomenon (shown in Figure 2); Discord nut contact when wherein the cylinder 3 of the outside depression of working profile is worked, the space that is recessed to form provides the nut shown in the double dot dash line (or dotted line) can around the working profile centre of gyration one rotational angle θ be arranged, the scope of this angle in sleeve: 0 °＜θ＜60 °.The present invention still has rotational angle θ (shown in Figure 8) when E=e, and existing sleeve just has corner α (shown in Figure 7) when having only E＞e.

The working profile outer face is convenient to nut and is inserted (shown in Figure 3) along an oblique angle is arranged on the inner periphery.

Claims

1. be convenient to the wrench socket that nut connects fast for one kind, the cylindrical sleeve body that comprises hollow, on the inner cylinder of hollow, have one group of plane that connects successively and curved surface, described plane and curved surface constitute the working profile of sleeve, it is characterized in that, the plane of described formation sleeve working profile and curved surface are to form by the material (1) of removing the Hexagonal jacket inner cylinder, wherein the inwardly protruded cylinder (2) of working profile and the outer prismatic surface of nut contact, and are used for nut is applied the power of tightening or unscrewing; The centre of gyration of described working profile to arbitrary inwardly protruded cylinder (2) apart from the size e of E less than nut; Wherein gapped between the cylinder of the outside depression of working profile (3) when work and nut, be recessed to form a space that provides nut that one rotational angle θ is arranged around the working profile centre of gyration in sleeve, the scope of angle θ: 0 °＜θ＜60 °.

2. according to claim 1ly be convenient to the wrench socket that nut connects fast, it is characterized in that, in described working profile outer face along an oblique angle is arranged on the inner periphery.