CN201027751Y

CN201027751Y - Anti-dropping pin with fast and convenient loading and unloading

Info

Publication number: CN201027751Y
Application number: CNU2007201010881U
Authority: CN
Inventors: 李彦锋; 严旭升; 赵旭明; 宋正润; 张云
Original assignee: Handan Iron and Steel Group Co Ltd
Current assignee: Handan Iron and Steel Group Co Ltd
Priority date: 2007-04-20
Filing date: 2007-04-20
Publication date: 2008-02-27
Anticipated expiration: 2017-04-20

Abstract

The utility model discloses an anti-retreat pin of quick and convenient detachment, relating to a back structure for the anti-retreat pin and belonging to the anti-retreat technical field. The utility model is used to overcome the shortcoming that the anti-retreat pin of the prior structure is not convenient to be detached. A pin shaft is arranged in the utility model, after improved, the tail end of the pin shaft is hinged with a movable block blade, an elastic blocking head is arranged at the end of the pin shaft corresponding to the bottom surface of the hinged groove of the movable block blade; a blocking groove matched with the elastic blocking head is arranged on the movable block blade; the blocking groove is clamped to the elastic blocking head when the movable block is in vertical lock condition; when the movable blocking blade is rotated to a horizontal state, the movable blocking blade and the anti-retreat pin can be conveniently inserted in the pin hole of a connecting element, and then the movable blocking blade is turned to a vertical condition to prevent the back pin from retreating; compared with the prior design of hatch pin, because the movable blocking blade has bigger size, convenient to touch and pinch, and can be conveniently rotated and moved, the anti-retreat lock operation is greatly facilitated when the anti-retreat pin is in a more concealed part in a machine, and the utility model solves the problem that a hatch pin is difficult to be inserted; therefore, the utility model is suitable to be used as an anti-retreat part in a machine.

Description

Load and unload anti-back pin quickly and easily

Technical field

The utility model relates to the anti-back pin, and especially the retaining structure of anti-back pin belongs to anti-back pin technical field.

Background technique

The anti-back structural design of traditional anti-back pin is that bearing pin inserts front end and is provided with cotter-pin hold, is inserting cotter pin behind the pin joint hole of bearing pin insertion member, utilizes the inflection of two forks of cotter pin leg to prevent that bearing pin from spinning off by falling back in the pin joint hole.The dismounting easily in most of mechanical implement devices of this kind anti-back pin, but when the anti-back pin is in the mechanical facility than the concealment part place, because cotter pin meticulous (diameter can be little of 2～6 millimeters), the problem that often occurs being difficult to view the cotter pin jack and be difficult to cotter pin is accurately inserted, bring very big trouble often therefore for the Maintenance and Repair work of mechanical facility, it is consuming time to increase maintenance, cause mechanical facility not resume operation as early as possible, particularly at the comparatively abominable high temperature of work condition environment, high dust place, normal maintenance man's the safety and health of therefore giving brings very big adverse effect.For this reason, need the anti-back pin of said structure is improved.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of loading and unloading anti-back pin quickly and easily, to overcome the use defective of existing structure anti-back pin loading and unloading inconvenience.

The alleged problem of the utility model realizes with following technological scheme:

A kind of loading and unloading are the anti-back pin quickly and easily, bearing pin is arranged in the formation, its improvement is, the hinged active catch tongue 2 of the tail end of described bearing pin 1, the rounded end of active catch tongue 2 is the circular arc termination, flexible dop on the bottom surface of the hinged groove 3 of the corresponding circular arc of bearing pin 1 tail end termination, the circular arc termination is provided with the draw-in groove 5 of coupling, draw-in groove 5 and elastic chuck clamping when active catch tongue 2 is in vertical locking condition.

Above-mentioned loading and unloading are the anti-back pin quickly and easily, and described circular arc is set up draw-in groove 6 on the termination, draw-in groove 6 and described elastic chuck clamping when active catch tongue 2 is in horizontal plug-in mounting state, and the other end of active catch tongue 2 also is the circular arc termination.

Above-mentioned loading and unloading are the anti-back pin quickly and easily, and described elastic chuck is made up of dop 4 and spring 8, and dop 4 is arranged in the dop hole that coupling is provided with on the hinged groove bottom surface, and spring 8 is positioned at the dop tail end, and dop hole front end has plug 9.

The utility model is at the hinged active catch tongue of anti-back pin tail end, just can easily active catch tongue and anti-back pin be inserted in the pin joint hole of connector element when making the active catch tongue go to level, moving the active catch tongue after the insertion makes it go to plumbness can to prevent that just bearing pin from falling back, existing relatively cotter pin anti-back design, because active catch tongue structure volume is bigger, be convenient to touch and grip, can rotate easily again and move, so be very easy to the anti-back locking operation of anti-back pin when being in the mechanical facility than the concealment part place, solved the problem of existing cotter pin anti-back structure split shed pin plug-in mounting difficulty well, suitable to the use of the anti-back pin component in the mechanical facility, especially suitable as anti-back pin use than concealment part.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is active catch tongue and a hinged groove position plan view among Fig. 1.

The component label is respectively in the accompanying drawing: 1-bearing pin, 2-active catch tongue, 3-hinged groove, 4-dop, 5, the 6-draw-in groove, 7-hinging shaft, 8-spring, 9-plug, A, B-member.

Embodiment

Consult accompanying drawing.Be illustrated as the utility model one Application Example.Bearing pin 1 is plugged in the pin joint hole of member A, B, and active catch tongue 2 is hinged on by hinging shaft 7 in the hinged groove 3 of bearing pin 1 tail end, and active catch tongue 2 can be the center rotation by hinging shaft 7.During plug-in mounting active catch tongue 2 is rotated to level shown in the two-dot chain line, after treating that itself and bearing pin 1 enter the pin joint hole of member A, B and bearing pin 1 and be plugged into, move active catch tongue 2 downwards, make it be in the plumbness shown in the solid line, elastic chuck on this moment hinged groove 3 bottom surfaces snaps in the draw-in groove 5 on the active catch tongue circular arc termination, active catch tongue 2 is keeping the locking plumbness under gravity and elastic chuck effect, bearing pin 1 is retreated by must not stop of vertical active catch tongue 2, thereby realizes preventing the stopping function that bearing pin falls back.

Still consult accompanying drawing.At the draw-in groove of setting up on the circular arc termination at draw-in groove 5 places 6 corresponding elastic chuck when active catch tongue 2 is in horizontal plug-in mounting state, be used to make active catch tongue 2 to keep levels, be beneficial to plug-in mounting.The other end of active catch tongue 2 also is the circular arc termination, imports to make things convenient for plug-in mounting.Angle between the draw-in groove 5,6 is 90 °.

Still consult accompanying drawing.Elastic chuck can be made up of dop 4 and spring 8, coupling is provided with the dop hole on hinged groove 3 bottom surfaces, by plug 9 dop 4 is stuck in the dop hole after dop 4 and spring 8 orders are loaded on the dop hole, plug 9 stops up for screw thread, is threaded with the tapped hole coupling of dop hole front end.

Claims

1. one kind is loaded and unloaded anti-back pin quickly and easily, bearing pin is arranged in the formation, it is characterized in that, the hinged active catch tongue of the tail end of described bearing pin [1] [2], the rounded end of active catch tongue [2] is the circular arc termination, flexible dop on the bottom surface of the hinged groove [3] of the corresponding circular arc of bearing pin [1] tail end termination, the circular arc termination is provided with the draw-in groove [5] of coupling, draw-in groove [5] and elastic chuck clamping when active catch tongue [2] is in vertical locking condition.

2. loading and unloading according to claim 1 are the anti-back pin quickly and easily, it is characterized in that, set up draw-in groove [6] on the described circular arc termination, draw-in groove [6] and described elastic chuck clamping when active catch tongue [2] is in horizontal plug-in mounting state, the other end of active catch tongue [2] also is the circular arc termination.

3. loading and unloading according to claim 2 are the anti-back pin quickly and easily, it is characterized in that described elastic chuck is made up of dop [4] and spring [8], dop [4] is arranged in the dop hole that coupling is provided with on the hinged groove bottom surface, spring [8] is positioned at the dop tail end, and dop hole front end has plug [9].