CN209195866U - A kind of maintenance dedicated sealing member - Google Patents

Abstract

The utility model discloses a kind of maintenance dedicated sealing members, including cylinder body, the cylinder interior is arranged with piston rod, the inner wall of the cylinder body is provided with pressure oill tank, the side of the pressure oill tank is provided with seal groove, sealing block is placed in the seal groove, the sealing block is equipped with outer lip close to the side of the pressure oill tank, the side of the outer lip is equipped with epipharynx, U-type groove is equipped between the outer lip and the epipharynx, the sealing block is equipped with secondary lip far from the side of the outer lip, the side of the pair lip is equipped with groove one, retaining ring is provided in the groove one, the side in the separate center of circle of the retaining ring is provided with several grooves two, movable block is equipped in the groove two, one end of the movable block is equipped with link block, the movable block is connected with several springs far from one end of the link block.The utility model has the advantages that when having scratch or corrosion on the side wall of seal groove, by the sealing block still can oil sealing save maintenance cost to be unlikely to scrap cylinder body.

Description

A kind of maintenance dedicated sealing member

Technical field

The utility model relates to hydraulic cylinder sealing element technical fields, it particularly relates to a kind of maintenance dedicated sealing member.

Background technique

Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, the hydraulic of straight reciprocating motion (or pendulum motion) is done and executes member Part, structure is simple, reliable operation, when realizing reciprocating motion, can remove deceleration device from it, and do not have drive gap, fortune It is dynamic steady, therefore be used widely in the hydraulic system of various machinery.Hydraulic cylinder power output and piston effective area and its The pressure difference on both sides is directly proportional, and hydraulic cylinder is substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit and row Device of air composition, general oil cylinder are sealed using sealing element, and for existing sealing element when groove is intact, sealing effect is good, but When groove has scratch or corrosion, then when the same sealing element is installed, it can still leak, cylinder body can only be replaced at this time, but replace cylinder Body cost is larger, increases use cost.

For the problems in the relevant technologies, currently no effective solution has been proposed.

Utility model content

It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of maintenance dedicated sealing member Problem.

To achieve the above object, the utility model provides the following technical solutions: a kind of maintenance dedicated sealing member, including cylinder Body, the cylinder interior are arranged with piston rod, and the inner wall of the cylinder body is provided with pressure oill tank, and the side of the pressure oill tank is opened There is seal groove, sealing block is placed in the seal groove, the sealing block is equipped with outer lip, institute close to the side of the pressure oill tank The side for stating outer lip is equipped with epipharynx, U-type groove is equipped between the outer lip and the epipharynx, the sealing block is far from the outer lip Side is equipped with secondary lip, and the side of the pair lip is equipped with groove one, and the groove one is located at the sealing block close to the side in the center of circle, Retaining ring is provided in the groove one, the side in the separate center of circle of the retaining ring is provided with several grooves two, sets in the groove two There is movable block, the movable block is in contact with the groove two, and one end of the movable block is equipped with link block, and the link block is remote One end from the movable block is through the groove two and positioned at the outside of the groove two, and the groove one is close to the connection Card slot is provided at block, one end that the link block is located at two outside of groove matches with the card slot, and the movable block is remote One end from the link block is connected with several springs, in the one end of the spring far from the movable block and the groove two Wall is fixedly connected.

Further, support ring, the support ring and the cylinder body are equipped between the seal groove and the pressure oill tank Inner wall connection.

Further, the cylinder body is equipped with dust ring, the dust ring and the cylinder far from one end of the pressure oill tank The inner wall of body connects.

Further, the retaining ring includes outer ring, inner ring and reinforcing ring, and the outside of the inner ring is equipped with outer ring, described outer Reinforcing ring is fixedly connected between circle and the inner ring.

Further, the two sides of the movable block are symmetrically fixedly connected with limited block, the limited block and the groove two Match.

Compared with prior art, the utility model has the following beneficial effects:

(1), when have on the side wall of seal groove scratch or corrosion when, by the sealing block still can oil sealing, to be unlikely to Cylinder body is scrapped, maintenance cost is saved.

(2), support ring plays the role of support, and dust ring avoids external dust from entering the inside of cylinder body, passes through reinforcement A possibility that ring improves the generally robust property of retaining ring, reduces fracture, limited block limits the activity point of view of movable block, is convenient for Link block is able to enter in card slot.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.

Fig. 1 is the structural schematic diagram according to a kind of maintenance dedicated sealing member of the utility model embodiment；

Fig. 2 is the structural schematic diagram of sealing block in a kind of maintenance dedicated sealing member according to the utility model embodiment；

Fig. 3 is the structural schematic diagram according to a kind of maintenance dedicated sealing member guide ring of the utility model embodiment；

Fig. 4 is the enlarged drawing in Fig. 3 at A；

Fig. 5 is the structural schematic diagram of card slot in a kind of maintenance dedicated sealing member according to the utility model embodiment.

Appended drawing reference:

1, cylinder body；2, piston rod；3, pressure oill tank；4, seal groove；5, sealing block；6, outer lip；7, epipharynx；8, U-type groove；9, Secondary lip；10, groove one；11, retaining ring；12, groove two；13, movable block；14, link block；15, card slot；16, spring；17, it supports Ring；18, dust ring；19, outer ring；20, inner ring；21, reinforcing ring；22, limited block.

Specific embodiment

In the following, making further description to utility model in conjunction with attached drawing and specific embodiment:

Embodiment one:

Fig. 1-5 is please referred to, according to a kind of maintenance dedicated sealing member of the utility model embodiment, including cylinder body 1, the cylinder 1 internal sleeve of body is equipped with piston rod 2, and the inner wall of the cylinder body 1 is provided with pressure oill tank 3, and the side of the pressure oill tank 3 is provided with close Sealing groove 4 is placed with sealing block 5 in the seal groove 4, and the sealing block 5 is equipped with outer lip 6 close to the side of the pressure oill tank 3, The side of the outer lip 6 is equipped with epipharynx 7, U-type groove 8 is equipped between the outer lip 6 and the epipharynx 7, the sealing block 5 is far from institute The side for stating outer lip 6 is equipped with secondary lip 9, and the side of the pair lip 9 is equipped with groove 1, and the groove 1 is located at the sealing block 5 are provided with retaining ring 11 in the side in the center of circle, the groove 1, and the side in the separate center of circle of the retaining ring 11 is provided with several Groove 2 12, the groove 2 12 is interior to be equipped with movable block 13, and the movable block 13 is in contact with the groove 2 12, the activity One end of block 13 is equipped with link block 14, and the link block 14 runs through the groove 2 12 and position far from one end of the movable block 13 In the outside of the groove 2 12, the groove 1 is provided with card slot 15, the link block 14 at the link block 14 Match in the one end in 2 12 outside of groove with the card slot 15, the one end of the movable block 13 far from the link block 14 It is connected with several springs 16, the fixed company of the inner wall of the one end of the spring 16 far from the movable block 13 and the groove 2 12 It connects.

Pass through the sealing when having scratch or corrosion on the side wall of seal groove 4 by the above scheme of the utility model Block 5 still can oil sealing save maintenance cost to be unlikely to scrap cylinder body 1.

Embodiment two:

Fig. 1-5 is please referred to, for seal groove 4, support ring is equipped between the seal groove 4 and the pressure oill tank 3 17, the support ring 17 is connect with the inner wall of the cylinder body 1；For cylinder body 1, the cylinder body 1 is far from the pressure oill tank 3 One end be equipped with dust ring 18, the dust ring 18 connect with the inner wall of the cylinder body 1；For retaining ring 11, the retaining ring 11 include outer ring 19, inner ring 20 and reinforcing ring 21, and the outside of the inner ring 20 is equipped with outer ring 19, the outer ring 19 and the inner ring Reinforcing ring 21 is fixedly connected between 20；For movable block 13, the two sides of the movable block 13 are symmetrically fixedly connected limited Position block 22, the limited block 22 match with the groove 2 12.

By the above scheme of the utility model, support ring 17 plays the role of support, and dust ring 18 avoids external dust A possibility that inside for entering cylinder body 1 is improved the generally robust property of retaining ring 11 by reinforcing ring 21, reduces fracture, limited block The activity point of view of 22 pairs of movable blocks 13 limits, and is able to enter in card slot 15 convenient for link block 14.

In conclusion by means of the above-mentioned technical proposal of the utility model first high pressure oil will be injected in U-type groove 8, in pressure Under the action of, outer lip 6 is close to the inner wall of seal groove 4 with epipharynx 7, carries out normal oil sealing operation, and secondary lip 9 helps out, but When seal groove 4 has corrosion or scratched on the inner wall of outer lip 6, epipharynx 7 can be leaked with outer lip 6, play oil sealing at this time It is secondary lip 9, secondary lip 9 has c-type structure, and 5 total height of sealing block is higher than seal groove 4, and installation is easy, and has one after installing Fixed preload can be sealed normally when pressure oil is in low pressure, when pressure oil high pressure, the U-type groove 8 of sealing block 5 by It squeezes, extruding force can pass the secondary lip 9 of cause at this time, and secondary lip 9 is made tightly to be adjacent to 4 side wall of seal groove, and retaining ring 11 plays force balance and anti-extrusion It acts on out, to obtain good sealing effect, one end of the link block 14 in retaining ring 11 is located at the card slot on the sealing block 5 In 15, make to be completely embedded between retaining ring 11 and sealing block 5, not easily to fall off, support ring 17 plays the role of support, and dust ring 18 is kept away Exempt from the inside that external dust enters cylinder body 1, the generally robust property of retaining ring 11 is improved by reinforcing ring 21, reduces the possibility of fracture Property, limited block 22 limit the activity point of view of movable block 13, are able to enter in card slot 15 convenient for link block 14, work as seal groove When having scratch or corrosion on 4 side wall, by the sealing block 5 still can oil sealing save dimension to be unlikely to scrap cylinder body 1 Accomplish this.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of maintenance dedicated sealing member, which is characterized in that including cylinder body (1), cylinder body (1) internal sleeve is equipped with piston rod (2), the inner wall of the cylinder body (1) is provided with pressure oill tank (3), and the side of the pressure oill tank (3) is provided with seal groove (4), institute It states and is placed with sealing block (5) in seal groove (4), the sealing block (5) is equipped with outer lip close to the side of the pressure oill tank (3) (6), the side of the outer lip (6) is equipped with epipharynx (7), is equipped with U-type groove (8) between the outer lip (6) and the epipharynx (7), institute It states sealing block (5) and is equipped with secondary lip (9) far from the side of the outer lip (6), the side of the pair lip (9) is equipped with groove one (10), The groove one (10) is located at side of the sealing block (5) close to the center of circle, is provided with retaining ring (11) in the groove one (10), The side in the separate center of circle of the retaining ring (11) is provided with several grooves two (12), is equipped with movable block in the groove two (12) (13), the movable block (13) is in contact with the groove two (12), and one end of the movable block (13) is equipped with link block (14), The one end of the link block (14) far from the movable block (13) is through the groove two (12) and is located at the groove two (12) Outside, the groove one (10) is provided with card slot (15) at the link block (14), and the link block (14) is located at described One end on the outside of groove two (12) matches with the card slot (15), and the one of the movable block (13) separate the link block (14) End is connected with several springs (16), and the one end of the spring (16) far from the movable block (13) is interior with the groove two (12) Wall is fixedly connected.

2. a kind of maintenance dedicated sealing member according to claim 1, which is characterized in that the seal groove (4) and the pressure Support ring (17) are equipped between power oil groove (3), the support ring (17) connect with the inner wall of the cylinder body (1).

3. a kind of maintenance dedicated sealing member according to claim 1, which is characterized in that the cylinder body (1) is far from the pressure One end of power oil groove (3) is equipped with dust ring (18), and the dust ring (18) connect with the inner wall of the cylinder body (1).

4. a kind of maintenance dedicated sealing member according to claim 1, which is characterized in that the retaining ring (11) includes outer ring (19), inner ring (20) and reinforcing ring (21), the outside of the inner ring (20) are equipped with outer ring (19), the outer ring (19) with it is described interior Reinforcing ring (21) are fixedly connected between circle (20).

5. a kind of maintenance dedicated sealing member according to claim 1, which is characterized in that the two sides pair of the movable block (13) Title is fixedly connected with limited block (22), and the limited block (22) matches with the groove two (12).