CN2714875Y

CN2714875Y - Protective anti-theft cutting sleeve for pin

Info

Publication number: CN2714875Y
Application number: CN 200420070405
Authority: CN
Inventors: 魏民
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-24
Filing date: 2004-08-24
Publication date: 2005-08-03
Anticipated expiration: 2014-08-24

Abstract

The utility model relates to a protective anti-theft cutting sleeve for pin, comprising a pin at whose end a pin hole or a groove is provided. The essential technical points are that the pin hole or the groove is arranged on the sealing shaft on the left and right side walls of the sleeve body at the pin end; the diameters of the inner bores of the two side walls of the sleeve body are the same with the external diameter of the pin; at least one pair of corrugated circlips is symmetrically arranged in the cavity between the two side walls. The wave bottom of the circlip is buckled in the pin hole or the groove. The wave peak of the circlip is tightly expanded with the inner circle of the circular wall of the sleeve body. The problems of difficult pin protection and theft protection existed in the prior art are effectively solved. Compared with the like products, the utility model has the advantages of reasonable design, simple preparing process, fast installation, reliable performance of protection and theft protection, high reuse efficiency after disassembly and primary materials saving, notably prolongs the service life of the elements connected by the pin and is convenient for maintenance and replacement of equipment.

Description

Bearing pin protection anti-theft cutting ferrule

Technical field

The utility model relates to a kind of bearing pin when installing and using protection, anti-theft device.Particularly a kind of bearing pin protection anti-theft cutting ferrule.It is applicable to the connection of various bearing pins, for example circular hole bearing pin, the flat hole bearing pin of cotter pin locking, the draw-in groove bearing pin of jump ring locking etc.

Background technique

At present, the bearing pin connection is component such as railway vehicle, big machinery a kind of connecting modes commonly used.Because the main stressed member that bearing pin connects is a bearing pin, and bearing pin generally is not subjected to axial force, so, for preventing moving axially of bearing pin, general circular hole bearing pin, when flat hole bearing pin is installed and used, be inserted in packing ring and in pin-and-hole, insert cotter pin couplings such as (circle cotter pin or flat cotter pins) and lock at its end that has pin-and-hole.When installing and using, insert V shape opening jump ring at its end that has draw-in groove and lock for the draw-in groove bearing pin.These bearing pin couplings often are in naked state as cotter pin, V shape opening jump ring etc., and be subjected to easily that external impacts comes off or lost by artificial the damage, therefore, the unshielded substantially and no anti-theft feature of bearing pin.In case couplings such as cotter pin or V shape opening jump ring come off or are disassembled, whole bearing pin will come off, and the component that cause bearing pin to connect break away from separately or stolen.In some unmanned guard places, the bearing pin coupling is lost and is happened occasionally, and there is serious potential safety hazard in coupled component.Particularly the component that connected by bearing pin of railway freight-car are lost in case bearing pin takes place, and will cause great driving accident.Be damaged or steal the problem of tearing open in order to solve bearing pin, field worker often adopts directly with packing ring, cotter pin or the dead method on bearing pin of V shape opening jump ring weldering.This method can realize anti-theft feature, but when maintenance maybe needs to dismantle the connection component of installing by bearing pin, must utilize gas cutting to cut away dead planchet, cotter pin or the V shape opening jump ring on bearing pin of weldering.Whole bearing pin and coupling will be destroyed fully, can not reuse, and cause raw-material waste.Secondly, regular gas welding, gas cutting cause the metal component surface oxidation easily, also influence the working life of the component that connected by bearing pin.In addition, it is not attractive in appearance to weld the bearing pin outer surface utmost point of dead planchet, cotter pin or V shape opening jump ring.Therefore, study a kind of reliable performance, attractive in appearance, easy for installation, the protection of not fragile bearing pin coupling, anti-theft device during dismounting have become technical barrier anxious to be solved.

The model utility content

The purpose of this utility model provides a kind of bearing pin protection anti-theft cutting ferrule, it efficiently solves the bearing pin protection that exists in the prior art, the problem of antitheft difficulty, compare its reasonable in design, easy processing with like product, quick for installation, protection, theftproof performance is reliable, has dismounting back recycling rate of waterused height, saves material, in the working life of the component that significant prolongation is connected by bearing pin, be convenient to characteristics such as device maintenance and replacing.

The purpose of this utility model is achieved in that this device comprises that the end has the bearing pin of pin-and-hole or draw-in groove, its technological points is: be assembled in pin-and-hole or draw-in groove on the body left and right sides sidewall sealing axle of bearing pin end, the diameter of bore of body two side is identical with the bearing pin external diameter, be symmetrical arranged at least one pair of corrugated jump ring in the cavity between the two side, the trough of jump ring snaps in pin-and-hole or draw-in groove, and the crest of jump ring is stretched in the interior week of body ring wall.

The crest place that the trough that described corrugated jump ring snaps in pin-and-hole or draw-in groove is adjacent is provided with tapped hole or pin with threaded hole.

The trough place that described corrugated jump ring snaps in pin-and-hole or draw-in groove is provided with tapped hole or pin with threaded hole.

The tapped hole that crest place that the trough that described corrugated jump ring snaps in pin-and-hole or draw-in groove is adjacent or trough place are provided with or the diameter of pin tapped hole are identical with the screw diameter of special screwdriver.

Because the utility model adopts pin-and-hole or draw-in groove on the body left and right sides sidewall sealing axle, be symmetrical arranged at least one pair of corrugated jump ring in the cavity between the two side, compare with like product, its reasonable in design, easy processing, quick for installation, thus can make the ring wall of body when installing and using, only keep rotating, and can not move axially.The corrugated jump ring adopts the mechanical strength of the mechanical strength of leaf spring steel much larger than the low carbon steel of cotter pin or V shape opening jump ring, and therefore the axial force that can bear is far longer than planchet, cotter pin or V shape opening jump ring.In addition, because of the trough that is encapsulated in the corrugated jump ring in the body snaps in pin-and-hole or draw-in groove, the crest of jump ring is stretched in the interior week of body ring wall, so not only the jump ring in the cavity remains certain tensioning elastic force, bearing pin is locked, and jump ring contained by cavity, also play protective action, can not expose corrosion or due to external force, locate to come off voluntarily, if adopt special tool can dismantle in accordance with regulations yet.Therefore, protection, theftproof performance is reliable, has dismounting back recycling rate of waterused height, saves material, and in the working life of the component that significant prolongation is connected by bearing pin, is convenient to characteristics such as device maintenance and replacing.The utility model efficiently solves the bearing pin protection that exists in the prior art, the problem of antitheft difficulty.

Description of drawings

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

Fig. 1 is a kind of concrete connecting structure schematic representation of the utility model user mode.

Fig. 2 is the cross-sectional view of a kind of I type structure of the present utility model.

Fig. 3 is the cross-sectional view of a kind of II type structure of the present utility model.

Fig. 4 is the cross-sectional view of a kind of III type structure of the present utility model.

Fig. 5 is a kind of special tool structural representation of the present utility model

Specific implementation method

Describe concrete structure principle of the present utility model in detail according to Fig. 1-5.This device comprises that the end has parts such as the bearing pin 1 of pin-and-hole or draw-in groove, body 3, corrugated jump ring 4.Wherein body 3 is made up of left and right sides sidewall and ring wall, and its specification, size should be determined according to actual usage requirement.Body 3 is assembled in the bearing pin end, and makes pin-and-hole or draw-in groove on the body left and right sides sidewall complete closed bearing pin 1.Identical with the diameter of bore of body 3 two sides of bearing pin 1 periphery contact with bearing pin 1 external diameter, be symmetrical arranged at least one pair of corrugated jump ring 4 in the cavity between the two side.The axial force that the bellows-shaped of corrugated jump ring 4 and the quantity of ripple can be born according to bearing pin 1 and the quantity of needs jump ring are determined.When installing and using, place the trough of the corrugated jump ring 4 in body 3 cavitys to snap in the pin-and-hole or draw-in groove of bearing pin 1, the crest of jump ring 4 is stretched in the interior week of body 3 ring walls, and the jump ring 4 in the cavity remains certain tensioning elastic force, makes bearing pin by axial locking.After the installation, body 3 can circumferentially rotate arbitrarily at bearing pin 1, but can not move vertically.Because of its body 3 can rotate relative to bearing pin 1, this has just significantly reduced friction and wear, and its life-span is prolonged.

Maintenance for convenience and change the component that connect can be dismantled body 4, and the pin 7 of tapped hole 6 or with threaded hole 6 can be set at the adjacent crest place of trough that corrugated jump ring 4 snaps in pin-and-hole or draw-in groove.The pin of tapped hole 6 or with threaded hole 6 also can be set at the trough place that corrugated jump ring 4 snaps in pin-and-hole or draw-in groove.Then, be equipped with special screwdriver (as shown in Figure 5) again, dismantle body 3.Corrugated jump ring 4 snaps in the diameter of tapped hole 6 that the adjacent crest place of the trough of pin-and-hole or draw-in groove or trough place be provided with or pin tapped hole 6 should be identical with the screw diameter of special screwdriver.

When needs dismountings bearing pin 1, can be at first tapped hole 6 relative positions on the ring wall outer surface of body 3 and jump ring 4 get out auxiliary hole, the quantity in hole should be identical with the quantity of built-in jump ring 4.Can special screwdriver be probeed into by auxiliary hole, aim at the tapped hole rotation, jump ring 4 is outwards lifted, make it to leave the pin-and-hole or the draw-in groove of bearing pin 1, can unload body 3, bearing pin 1 smoothly like this.

This device only needs each the trough spreading towards bearing pin 1 with the corrugated jump ring 4 in the body 3 when mounted, utilizes bearing pin 1 end-beveling to import in the pin-and-hole or draw-in groove of bearing pin 1, can finish fittage smoothly.

Claims

1, a kind of bearing pin protection anti-theft cutting ferrule, comprise that the end has the bearing pin of pin-and-hole or draw-in groove, it is characterized in that: be assembled in pin-and-hole or draw-in groove on the body left and right sides sidewall sealing axle of bearing pin end, the diameter of bore of body two side is identical with the bearing pin external diameter, be symmetrical arranged at least one pair of corrugated jump ring in the cavity between the two side, the trough of jump ring snaps in pin-and-hole or draw-in groove, and the crest of jump ring is stretched in the interior week of body ring wall.

2, bearing pin protection anti-theft cutting ferrule according to claim 1, it is characterized in that: the crest place that the trough that described corrugated jump ring snaps in pin-and-hole or draw-in groove is adjacent is provided with tapped hole or pin with threaded hole.

3, bearing pin protection anti-theft cutting ferrule according to claim 1 is characterized in that: the trough place that described corrugated jump ring snaps in pin-and-hole or draw-in groove is provided with tapped hole or pin with threaded hole.

4, bearing pin protection anti-theft cutting ferrule according to claim 1 is characterized in that: the tapped hole that the crest place that the trough that described corrugated jump ring snaps in pin-and-hole or draw-in groove is adjacent or its trough place are provided with or the diameter of pin tapped hole are identical with the screw diameter of special screwdriver.