CN214499621U

CN214499621U - Cylinder head with good sealing performance for hydraulic cylinder

Info

Publication number: CN214499621U
Application number: CN202022738409.7U
Authority: CN
Inventors: 彭军
Original assignee: Yancheng Aohui Machinery Co ltd
Current assignee: Yancheng Aohui Machinery Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-10-26
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a cylinder head with good sealing performance for a hydraulic cylinder, which belongs to the technical field of hydraulic cylinders and comprises a cylinder body, a cylinder head and a cylinder cover, wherein the top of the cylinder head extends towards the left side and the right side, the left side and the right side of the bottom of the extending end of the cylinder head are both connected with plugboards, slots matched with the plugboards are longitudinally arranged inside the left side wall and the right side wall of the cylinder body, a first movable groove is transversely arranged above the left side wall and the right side wall of the cylinder body, the first movable groove is communicated with the slots, a spring and a slide seat are arranged at the bottom in the plugboards, two ends of the spring are respectively connected with the inner walls of the plugboards and the slide seat, two sealing rings are arranged in the first movable groove in the cylinder head, the inner walls of the two sealing rings are attached to the outer wall of a piston rod, the double sealing effect is achieved, liquid can be effectively prevented from seeping out from the cylinder body, and a sealing gasket is arranged at the joint of the top of the cylinder body and the bottom of the extending end of the cylinder head, the sealing effect is achieved, liquid is prevented from flowing out of the connecting position, and the sealing performance is good.

Description

Cylinder head with good sealing performance for hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field specifically is a cylinder end that leakproofness is good for pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When the reciprocating motion is realized by using the cylinder head, a speed reduction device can be omitted, no transmission gap exists, and the reciprocating motion is stable, so the cylinder head is widely applied to hydraulic systems of various machines, the cylinder head is an important part in a hydraulic cylinder and plays a role in sealing and guiding, the existing cylinder head has poor sealing performance and is easy to generate the condition of liquid leakage, the existing cylinder head and a cylinder body are connected in a mode of bolt connection, and the cylinder head is inconvenient to disassemble during later maintenance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder head that leakproofness is good for pneumatic cylinder to the sealing performance who proposes in solving above-mentioned background art is relatively poor, produces the condition of weeping easily, when later stage maintenance, inconvenient carries out the problem dismantled to the cylinder head.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cylinder head that leakproofness is good for pneumatic cylinder, includes cylinder body, cylinder head and cylinder cap, the cylinder head top extends to the left and right sides, the extension end bottom left and right sides of cylinder head all is connected with the picture peg, the inside vertical slot of offering with picture peg assorted slot of the wall of cylinder body left and right sides, movable groove one has transversely been seted up above the wall of cylinder body left and right sides, movable groove one and slot intercommunication, the bottom is equipped with spring and slide in the picture peg, the both ends of spring are connected with picture peg inner wall, slide respectively, the one end that slide and spring deviate from runs through the picture peg joint in movable groove one, the bottom and the cylinder body top junction of extending the end about the cylinder head are equipped with sealed the pad, vertically seted up movable groove two in the cylinder head, the piston rod has been inserted in the movable groove two, by last dust groove that transversely has seted up respectively under to in the movable groove two, The inner walls of the dust-proof ring, the positioning ring, the first sealing ring and the second sealing ring are all attached to the outer wall of the piston rod.

Preferably, a piston disc is arranged below the cylinder body, the bottom of the piston rod is connected with the top of the piston disc, and a sealing ring is arranged on the outer wall of the piston disc.

Preferably, the outer wall of the left side and the outer wall of the right side of the cylinder head are provided with a first thread, the outer wall of the left side and the outer wall of the right side of the cylinder body are provided with a second thread, the inner wall of the left side and the inner wall of the cylinder cover are both provided with a thread groove matched with the first thread and the second thread, and the inner wall of the cylinder cover is in threaded connection with the outer walls of the cylinder head and the cylinder body.

Preferably, a first liquid inlet and a second liquid inlet are respectively arranged above and below the right side wall of the cylinder body, and the first liquid inlet and the second liquid inlet are both communicated with the cylinder body.

Preferably, the middle part in the cylinder cover is longitudinally provided with a third movable groove matched with the piston rod, and the piston rod is inserted in the third movable groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model discloses be equipped with two sealing washers in the activity groove in the cylinder end, the outer wall laminating of two sealing washer inner walls and piston rod has played double seal's effect, can effectively avoid liquid to ooze from the cylinder body, is equipped with sealed the pad at cylinder body top and cylinder end extension end bottom junction, has played sealed effect, prevents that liquid from flowing from the junction, and sealing performance is good.

2) The utility model discloses when needs are dismantled the cylinder head, unscrew the cylinder cap from cylinder head and cylinder body, press the slide and make spring compression, the slide shifts out movable groove one, takes the picture peg out from the slot, can accomplish the dismantlement to the cylinder head, easy operation, it is convenient to dismantle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a point a in fig. 1.

In the figure: 1 cylinder body, 2 cylinder heads, 3 cylinder covers, 4 piston rods, 5 liquid inlet two, 6 liquid inlet one, 7 piston discs, 8 sealing rings, 9 thread one, 10 thread two, 11 sealing gaskets, 12 movable groove one, 13 plugboards, 14 sliding seats and 15 springs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a cylinder head that leakproofness is good for pneumatic cylinder, includes cylinder body 1, cylinder head 2 and cylinder cap 3, 2 tops of cylinder head extend to the left and right sides, the extension end bottom left and right sides of cylinder head 2 all is connected with picture peg 13, the inside vertical slot of phase-matched with picture peg 13 of seting up of the wall of the left and right sides of cylinder body 1, movable groove one 12 has transversely been seted up to wall top of the left and right sides of cylinder body 1, movable groove one 12 and slot intercommunication, the bottom is equipped with spring 15 and slide 14 in the picture peg 13, the both ends of spring 15 are connected with picture peg 13 inner wall, slide 14 respectively, the slide 14 runs through picture peg 13 joint in movable groove one 12 with the one end that spring 15 deviates from mutually, when needing to dismantle cylinder head 2, twists down cylinder cap 3 from cylinder head 2 and cylinder body 1, presses slide 14 to make spring 15 compress, and slide 14 shifts out movable groove one 12, takes picture peg 13 out from the slot, the cylinder head 2 is separated from the cylinder body 1, so that the cylinder head 2 can be disassembled, a sealing gasket 11 is arranged at the joint of the bottom of the left and right extending ends of the cylinder head 2 and the top of the cylinder body 1, the sealing effect is achieved, liquid is prevented from flowing out from the joint, the sealing performance is good, a movable groove II is longitudinally formed in the cylinder head 2, a piston rod 4 is inserted in the movable groove II, a dust-proof groove, a positioning groove, a sealing groove III and a sealing groove IV are respectively and transversely formed in the movable groove II from top to bottom, a dust-proof ring, a positioning ring, a sealing ring I and a sealing ring II are respectively arranged in the dust-proof groove, the positioning groove, the sealing groove III and the sealing groove IV, the inner walls of the dust-proof ring, the positioning ring, the sealing ring I and the sealing ring II are all attached to the outer wall of the piston rod 4, the dust-proof ring can be prevented from entering the movable groove II, the positioning ring can be used for positioning the piston rod 4, and the inner walls of the sealing ring I and the sealing ring II are all attached to the outer wall of the piston rod 4, play the effect of double seal, can effectively avoid liquid to ooze from the cylinder body 1.

A piston disc 7 is arranged below the cylinder body 1, the bottom of the piston rod 4 is connected with the top of the piston disc 7, and a sealing ring 8 is arranged on the outer wall of the piston disc 7.

The outer wall of the left side and the right side of the cylinder head 2 is provided with a first thread 9, the outer wall of the left side and the right side of the cylinder body 1 is provided with a second thread 10, the inner wall of the left side and the right side of the cylinder body 3 is provided with a first thread 9 and a second thread 10, the inner wall of the cylinder cover 3 is screwed on the outer wall of the cylinder head 2 and the cylinder body 1, the cylinder cover 3 is screwed clockwise, so that the cylinder head 2 and the cylinder body 1 are attached more tightly, and the cylinder cover 3 can be screwed anticlockwise, so that the cylinder cover 3 can be screwed off from the cylinder head 2 and the cylinder body 1.

The upper part and the lower part of the right side wall of the cylinder body 1 are respectively provided with a liquid inlet I6 and a liquid inlet II 5, and the liquid inlet I6 and the liquid inlet II 5 are communicated with the inside of the cylinder body 1.

The middle part in the cylinder cover 3 is longitudinally provided with a third movable groove matched with the piston rod 4, and the piston rod 4 is inserted in the third movable groove.

The working principle is as follows: the inner walls of the first sealing ring and the second sealing ring are attached to the outer wall of the piston rod 4, a double sealing effect is achieved, liquid can be effectively prevented from seeping out of the cylinder body 1, a sealing gasket 11 is arranged at the joint of the top of the cylinder body 1 and the bottom of the extending end of the cylinder head 2, a sealing effect is achieved, liquid is prevented from flowing out of the joint, the sealing performance is good, when the cylinder head 2 needs to be disassembled, the cylinder cover 3 is unscrewed from the cylinder head 2 and the cylinder body 1, the sliding seat 14 is pressed to compress the spring 15, the sliding seat 14 is moved out of the movable groove I12, the inserting plate 13 is pulled out of the inserting groove, the cylinder head 2 is separated from the cylinder body 1, and the disassembling of the cylinder head 2 can be completed.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cylinder head that leakproofness is good for pneumatic cylinder, includes cylinder body (1), cylinder head (2) and cylinder cap (3), its characterized in that: the utility model discloses a cylinder head, including cylinder head (2), extension end bottom left and right sides, the extension end bottom left and right sides of cylinder head (2) all is connected with picture peg (13), cylinder body (1) left and right sides wall inside vertically seted up with picture peg (13) assorted slot, movable groove (12) have transversely been seted up to cylinder body (1) left and right sides wall top, movable groove (12) and slot intercommunication, bottom are equipped with spring (15) and slide (14) in picture peg (13), the both ends of spring (15) are connected with picture peg (13) inner wall, slide (14) respectively, slide (14) run through picture peg (13) joint in movable groove (12) with the one end that spring (15) deviated from mutually, the bottom of extending end is equipped with sealed pad (11) with cylinder body (1) top junction about cylinder head (2), movable groove two has vertically been seted up in cylinder head (2), piston rod (4) are inserted in the activity groove two, dust-proof groove, constant head tank, seal groove three and seal groove four have transversely been seted up respectively by last under to in the activity groove two, dust-proof ring, holding ring, sealing washer one, sealing washer two are installed respectively in dust-proof groove, constant head tank, seal groove three and the seal groove four, the inner wall of dust-proof ring, holding ring, sealing washer one, sealing washer two all laminates with the outer wall of piston rod (4).

2. The cylinder head for a hydraulic cylinder having good sealing performance as claimed in claim 1, wherein: the cylinder body (1) is internally provided with a piston disc (7) in the lower part, the bottom of the piston rod (4) is connected with the top of the piston disc (7), and the outer wall of the piston disc (7) is provided with a sealing ring (8).

3. The cylinder head for a hydraulic cylinder having good sealing performance as claimed in claim 1, wherein: the cylinder head (2) left and right sides outer wall is equipped with screw thread one (9), cylinder body (1) left and right sides outer wall top be equipped with screw thread two (10), the inner wall all seted up about cylinder cap (3) with screw thread one (9), screw thread two (10) assorted thread groove, cylinder cap (3) inner wall spiro union is on the outer wall of cylinder head (2), cylinder body (1).

4. The cylinder head for a hydraulic cylinder having good sealing performance as claimed in claim 1, wherein: the upper part and the lower part of the right side wall of the cylinder body (1) are respectively provided with a first liquid inlet (6) and a second liquid inlet (5), and the first liquid inlet (6) and the second liquid inlet (5) are communicated with the inside of the cylinder body (1).

5. The cylinder head for a hydraulic cylinder having good sealing performance as claimed in claim 1, wherein: the middle part in the cylinder cap (3) is longitudinally provided with a third movable groove matched with the piston rod (4), and the piston rod (4) is inserted in the third movable groove.