CN101776115B

CN101776115B - Pin capable of preventing lubricating oil leakage and application thereof

Info

Publication number: CN101776115B
Application number: CN2010101314972A
Authority: CN
Inventors: 吴银辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-25
Filing date: 2010-03-25
Publication date: 2012-08-29
Anticipated expiration: 2030-03-25
Also published as: CN101776115A

Abstract

The invention relates to a pin capable of preventing lubricating oil leakage and application thereof. The pin comprises a pin body, wherein the outer wall of the left end and the outer wall of the right end of the pin body are respectively provided with at least two annular grooves, piston rings are arranged in the annular grooves, at least one pin sleeve is fixed outside the pin body, and the pin body is tightly matched with the inner wall of the pin sleeve through the piston rings. The invention also includes the application of the pin to a connecting mechanism of a digging bucket and a digging arm of a digging machine. The pin of the invention is not easy to be damaged, the service life is long, the pin has good sealing performance, and the lubricating oil is not easy to be leaked.

Description

A kind of pin and application thereof that prevents oil leak

Technical field

The present invention relates to a kind of pin and application thereof, especially relate to a kind of pin and application in excavator-type shovel clamshell excavator and digging arm bindiny mechanism thereof that prevents oil leak.

Background technique

Pin is a most basic a kind of coupling, is widely used in fields such as machinery, automobile, engineering machinery.Pin on the existing various device generally all is provided with guide; But owing to have the gap between guide and the pin, pin is sealing not, and the lubricant oil between guide and the pin is easy to leak; Must often be lubricated operation to pin; And harmful matters such as extraneous mud, sand, water are prone to infiltrate in the gap between guide and the pin, and pin is fragile, and working life is short.

Summary of the invention

The object of the present invention is to provide a kind of not fragilely, long service life can prevent the pin of oil leak.

Further aim of the present invention is the technological scheme that provides a kind of said pin in excavator-type shovel clamshell excavator and digging arm bindiny mechanism, to use.

The technological scheme of the present invention's pin is: it comprises the pin body; Pin body left end outer wall and right-hand member outer wall are respectively equipped with at least two annular grooves; Piston ring is housed in the annular groove; Pin body outer fixing has at least one guide, and the pin body closely cooperates through piston ring and guide inwall.

Also be provided with annular slot on the said pin body outer wall, the guide two ends are provided with snap ring, and snap ring is stuck in the annular slot, are beneficial to guide fixing on the pin body.

Said pin body left end, pin body right-hand member are equipped with radial screw bore.

The said first guide outer wall, the second guide outer wall are equipped with axial keyway.

During the assembling of the present invention's pin and other associated components, need the structure of associated components is done suitably adjustment, and should earlier guide be fixed on the pin body, make its become as a whole after, again with other associated components assembling.

Further aim of the present invention is achieved through following technological scheme: use the present invention's pin to replace the bucket pin in existing excavator-type shovel clamshell excavator and the digging arm bindiny mechanism, the pin body is provided with two guidees outward.

In addition, be located at all available the present invention's of all pins on the excavator pin replacement.

Owing to be provided with piston ring, the pin body closely cooperates through piston ring and guide inwall between pin body of the present invention, the guide, and favorable sealing property can prevent oil leak, reduces the number of times of pin being played lubricant oil, increases the service life.

Description of drawings

Fig. 1 is the structural representation of one embodiment of the invention;

Fig. 2 is an A-A embodiment illustrated in fig. 1 place sectional view;

Fig. 3 is a pin body structure schematic representation embodiment illustrated in fig. 1;

Fig. 4 is the first guide cross-sectional view embodiment illustrated in fig. 1;

Fig. 5 is excavator-type shovel clamshell excavator and digging arm bindiny mechanism structural representation;

Fig. 6 is excavator-type shovel clamshell excavator shown in Figure 5 and digging arm bindiny mechanism B-B place sectional view;

Fig. 7 is excavator-type shovel clamshell excavator shown in Figure 5 and digging arm bindiny mechanism C-C place sectional view;

Fig. 8 is excavator-type shovel clamshell excavator shown in Figure 5 and digging arm bindiny mechanism head of the horse structural representation;

Fig. 9 is the left view of Fig. 8;

Figure 10 excavator-type shovel clamshell excavator shown in Figure 5 and the digging arm bindiny mechanism first bucket ear structure schematic representation;

Figure 11 is the left view of Figure 10;

Figure 12 is excavator-type shovel clamshell excavator shown in Figure 5 and the digging arm bindiny mechanism first bucket ear muff structural representation;

Figure 13 is the left view of Figure 12.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

Embodiment 1:

With reference to Fig. 1,2,3,4; Present embodiment comprises pin body 2; Pin body 2 left end outer walls, right-hand member outer wall are respectively equipped with 4 annular grooves, and notched piston ring 5 is housed in the annular groove, and pin body 2 left ends are fixed with first guide 6; Pin body 2 right-hand members are fixed with second guide 7, and pin body 2 closely cooperates through piston ring 5 and first guide, 6 inwalls, second guide, 7 inwalls.

Said pin body 2 left end outer walls are provided with annular slot I 13-1, annular slot II 13-2; Pin body 2 right-hand member outer walls have annular slot III 13-3, annular slot IV 13-4; First guide, 6 two ends are respectively equipped with snap ring I 14-1, snap ring II 14-2; Second guide, 7 two ends are respectively equipped with snap ring III 14-3, snap ring IV 14-4, and snap ring I 14-1, snap ring II 14-2 are stuck in respectively among annular slot I 13-1, the annular slot II 13-2, are beneficial to first guide 6 fixing on pin body 2; Snap ring III 14-3, snap ring IV 14-4 are stuck in respectively among annular slot III 13-3, the annular slot IV 13-4, are beneficial to second guide 7 fixing on pin body 2.

Pin body 2 left ends are provided with radial screw bore III 17-3, and pin body 2 right-hand members are provided with radial screw bore IV 17-4.

First guide, 6 outer walls are provided with axial keyway II 15-2, and second guide, 7 outer walls are provided with axial keyway III 15-3.

Embodiment 2:

Present embodiment is an application implementation example of above-mentioned pin, is used for substituting the bucket pin of existing excavator-type shovel clamshell excavator and digging arm bindiny mechanism.

With reference to Fig. 5～13, existing excavator-type shovel clamshell excavator and digging arm bindiny mechanism comprise head of the horse 1, the first bucket ear 3, second ear 4 that struggles against;

Head of the horse 1 is located on the digging arm; Head of the horse 1 center is provided with axial hole, and head of the horse 1 is fixed in outside first guide 6, second guide 7, and head of the horse 1 internal diameter and first guide 6, second guide, 7 external diameters adapt; Head of the horse 1 middle part is provided with the 3rd grease nipple 8, the three grease nipples 8 and communicates with head of the horse 1 center axial hole;

The first bucket ear 3, the second bucket ear 4 are located on the bucket; The first bucket ear, 3 centers, the second bucket ear, 4 centers are equipped with axial hole; Pin body 2 left end ends, right-hand member end place the axial hole at the first bucket ear, 3 centers, the axial hole at the second bucket ear, 4 centers respectively; Be provided with the first bucket ear muff 9 in the space between the pin body 2 and the first bucket ear 3; Be provided with the second bucket ear muff 10 in the space between the pin body 2 and the second bucket ear 4; The first bucket ear muff, 9 internal diameters, the second bucket ear muff, 10 internal diameters all adapt with pin body 2 external diameters; The first bucket ear muff, 9 external diameters, the second bucket ear muff, 10 external diameters adapt with the first bucket ear, 3 internal diameters, the second bucket ear, 4 internal diameters respectively, and the first bucket ear 3 is provided with its central shaft and is provided with second grease nipple 12 that communicates to through hole with its central shaft to first grease nipple, 11, the second bucket ears 4 that through hole communicates; Lubricant oil flows to the first bucket ear, 3 ends, the second bucket ear, 4 ends respectively after first grease nipple 11, second grease nipple 12 inject, thereby helps preventing the friction between the first bucket ear, 3 ends, second bucket ear 4 ends and head of the horse 1 two end part.

First bucket ear muff 9 outer walls are provided with the radial position annular lubrication groove I 19-1 identical with first grease nipple 11; Be provided with radial direction through hole 20 in the annular groove I 19-1; Be beneficial to lubricated first bucket ear muff 9 inwalls and pin body 2 outer walls; The second bucket ear muff, 10 outer walls are provided with the radial position annular lubrication groove II 19-2 identical with second grease nipple, also are provided with radial direction through hole in the annular groove II 19-2, are beneficial to lubricated second bucket ear muff 10 inwalls and pin body 2 outer walls.

Head of the horse 1 inwall is provided with and first guide, 6 outer wall axial keyway II 15-2, the corresponding axial keyway I of second guide, 7 outer wall axial keyway III 15-3 15-1; In head of the horse 1 inwall axial keyway I 15-1, first guide, 6 outer wall axial keyway I 15-1, second guide, the 7 outer wall axial keyway III 15-3 key 16 is housed; Head of the horse 1 closely cooperates through key 16 and first guide 6, second guide 7; And under the effect of key 16, help preventing that first guide 6, second guide 7 from walking the phenomenon of outer ring and taking place on head of the horse 1.

Be respectively equipped with radial position radial screw bore I 17-1, the radial screw bore II 17-2 identical on the first bucket ear 3, the first bucket ear muff 9 with the radial screw bore III 17-3 of pin body 2 left ends; Be equipped with bolt I 18-1 among radial screw bore I 17-1, radial screw bore II 17-2, the radial screw bore III 17-3, be beneficial to the overall fixed of the first bucket ear muff 9, the first bucket ear 3, pin body 2; Also be equipped with the identical radial screw bore of radial screw bore IV 17-4 of radial position and pin body 2 right-hand members on the second bucket ear 4, the second bucket ear muff 10; Be equipped with bolt II 18-2 in pin body 2 radial screw bore IV 17-4, second bucket ear 4 radial screw bore, the second bucket ear muff, 10 radial screw bore, be beneficial to the overall fixed of the second bucket ear 4, the second bucket ear muff 10, pin body 2.

Be provided with key 16 between the head of the horse 1 and first guide 6, second guide 7; Under the effect of key 16; Can prevent effectively that first guide 6, second guide 7 from walking the phenomenon of outer ring and taking place on head of the horse 1; Prolong 1 working life of head of the horse, help the dismounting of integral body in head of the horse 1 of first guide 6, second guide 7, pin body 2 again; Formed a sealed space between head of the horse 1, pin body 2, first guide 6, second guide 7; Head of the horse 1 middle part can store more lubricant oil; When piston ring 5 oil starvations; Produce dry wear between the piston ring 5 and first guide 6, second guide 7, the lubricant oil at head of the horse 1 middle part in time adds in the space between the piston ring 5 and first guide 6, second guide 7 under the effect of pressure; Thereby help reducing the wearing and tearing between the pin body 2 and first guide 6, second guide 7, prolong the working life of pin.

Claims

One kind can prevent oil leak pin; Comprise the pin body; It is characterized in that pin body left end outer wall and right-hand member outer wall are respectively equipped with at least two annular grooves, and piston ring is housed in the annular groove; Pin body outer fixing has at least one guide, and the pin body closely cooperates through piston ring and guide inwall; Said guide outer wall is provided with axial keyway;

Also be provided with annular slot on the said pin body outer wall, the guide two ends are provided with snap ring, and snap ring is stuck in the annular slot.
2. the pin that prevents oil leak according to claim 1 is characterized in that, said pin body left end, pin body right-hand member are equipped with radial screw bore.
3. the pin that prevents oil leak according to claim 1 and 2 is characterized in that, the pin body is provided with two guidees outward.
4. the pin that prevents oil leak according to claim 3 is characterized in that, the first guide outer wall, the second guide outer wall are equipped with axial keyway.
5. the described application of pin in excavator-type shovel clamshell excavator and digging arm bindiny mechanism that prevents oil leak of claim 4.