CN203357382U

CN203357382U - Ring disassembling device

Info

Publication number: CN203357382U
Application number: CN 201320396710
Authority: CN
Inventors: 孙效
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-01
Filing date: 2013-07-01
Publication date: 2013-12-25
Anticipated expiration: 2023-07-01

Abstract

Disclosed is a ring disassembling device. According to an expansion sleeve, the outer surface of the expansion sleeve is consistent with a ring inner hole and the surface of a lower opening chamfer, the inner surface of the expansion sleeve is consistent with the outer surface of a taper body on the lower side of a taper expansion rod, the expansion sleeve is milled by a saw blade milling cutter into trisections, and the trisections are connected together through pulling strips installed in a common groove. A taper hole in the expansion sleeve is formed in the taper body on the lower side of the taper expansion rod. An outer cylinder of the expansion sleeve is installed in the ring inner hole. A small pressing disc is installed on the end face of the upper side of the expansion sleeve. A lifting screw sleeve is installed on a stud of the taper expansion rod through an internal thread of the lifting screw sleeve. The small pressing disc is compressed by rotating the lifting screw sleeve to the outer surface of the expansion sleeve to be rightly attached to the ring inner hole and the surface of the lower opening chamfer. A large pressing disc is installed on the face of an air cylinder cover, and an internal thread of a lifting handle is installed on an external thread of the screw sleeve. The ring disassembling device has the advantage that under the situation that the ring and the air cylinder cover are not damaged, the ring is conveniently disassembled. The ring disassembling device is simple in structure and reliable and convenient to use.

Description

Take off the circle device

Affiliated technical field

The utility model relates to a kind of mechanical provision for disengagement, especially takes off the circle device.

Background technology

Cover parts is common machine components, and it is contained in the position such as friction, sealing of the parts such as casing, support, cylinder cap.By replacing, overlap the service life of playing parts such as extending casing, support, cylinder cap.The cover be contained in the part through hole can push up it from an end in hole with simple instrument, and dismounting is than being easier to.And the hole of installation sleeve is when obstructed, grip is pulled down just cumbersome from hole.For example the valve circle of high-power diesel engine cylinder head just is mounted in Mian Shang hole, combustion chamber, and the magnitude of interference reaches 0.06～0.08 millimeter.Cylinder head is costly part, when the valve circle may wear to the obsolete limit, will more renew, and the structure of cylinder head can't eject it with instrument while making to dismantle the valve circle.Common way is: 1, cylinder head is contained on milling machine, with slotting cutter, the valve circle is milled to disconnected the taking-up.Because the hardness of valve circle is higher, the milling difficulty, will mill when disconnected very carefully at the valve circle, once not noticing that milling cutter mills on cylinder head, cylinder head has been scrapped.2, the reinforcing bar of burn-oning on the valve circle, pull it.Welding also can cause cylinder head to scrap, also difficult while because the magnitude of interference of valve circle and cylinder head is large, with reinforcing bar, drawing the valve circle.Above method is all undesirable in a word.

Summary of the invention

In order easily the valve circle to be pulled down from cylinder head, designed a kind of circle device of taking off, drive valve seat insert with expansion set and under the effect of lifting handle, circle is pulled down.

The utility model solves the technical scheme that its technical problem adopts: expansion set is consistent with circle endoporus and end opening chamfer surface by outer surface, the consistent cover of centrum outer surface that inner surface is following with the tapering expander roll, mill out by 3 deciles with metal saw, link together by the tie rod be contained in their common grooves; The taper hole of expansion set is contained on the following centrum of tapering expander roll, the outside cylinder of expansion set is contained in the endoporus of circle, little platen is contained on the end face of expansion set top, promote swivel nut and be contained in its internal thread on the double-screw bolt of tapering expander roll, promote swivel nut by rotations and compress little platen the outer surface of expansion set and endoporus and the end opening chamfer surface of circle are fitted tightly; Large platen is contained on the face of cylinder head, and the internal thread of lifting handle is contained on the external screw thread of swivel nut.

The beneficial effects of the utility model are, can be in the situation that do not damage circle and cylinder head, and circle is pulled down easily.Take off the circle device simple in structure, easy to use and reliable.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the front view of taking off the circle device.

Fig. 2 is the cutaway view at the A-A place of Fig. 1.

1. expansion sets in figure, 2. tapering expander roll, 3. promote swivel nut, 4. lifting handle, 5. little platen, 6. tie rod, 7. circle, 8. large platen, 9. cylinder head.

The specific embodiment

Accompanying drawing is to take off the circle device by the valve circle design of dismounting 16V240 cylinder cover for diesel engine.By the design of common mechanical part, there is chamfering at valve circle endoporus two ends, and also there is chamfering the bottom surface, hole contacted with the valve circle.Thereby the design principle of taking off the circle device is exactly to utilize the inner surface of the expansion set tensioner valve circle of outer radius variable that the valve circle is taken out.With reference to accompanying drawing, expansion set (1) is consistent with valve circle (7) endoporus and lower chamfer surface by outer surface, inner surface the apply mechanically metal saw consistent with tapering expander roll (2) outer surface of cone mills out by 3 deciles, by the tie rod (6) be contained in their common grooves, links together.The 0 type rubber seal that tie rod (6) available size is suitable replaces.When the size of milling cutter otch should be able to meet expansion set (1) and is contained in tapering expander roll (2) cone small end, its external diameter corresponding with valve circle (7) bottom, hole chamfering is put in the endoporus of valve circle (7).The taper hole of expansion set (1) is contained on the following centrum of tapering expander roll (2), and the outside cylinder of expansion set (1) is contained in the endoporus of circle (7).Little platen (5) is contained on the end face of expansion set (1) top, promote swivel nut (3) and be contained in its internal thread on the double-screw bolt of tapering expander roll (2), promote swivel nut (3) by rotations and compress little platen (5) outer surface of expansion set (1) and endoporus and the end opening chamfer surface of circle (7) are fitted tightly; Large platen (8) is contained on the face of cylinder head (9), and the internal thread of lifting handle (4) is contained on the external screw thread that promotes swivel nut (3).Expansion set (1) is contained in the endoporus of valve circle (7) after being contained in the small end of tapering expander roll (2), and the upper jut corresponding with valve circle (7) bottom, hole chamfering of expansion set (1) aligns with circle (7) bottom, hole chamfering.For the expansion set (1) that makes to be contained in valve circle (7) is adjacent to circle (7) endoporus and chamfering, little platen (5) is contained on expansion set (1) end face, tapering expander roll (2) relatively rotates with lifting swivel nut (3), compress little platen (5) and make the external diameter increase of expansion set (1) and the bore area tensioner of valve circle (7), expansion set (1) tapering expander roll (2) and lifting swivel nut (3) are linked together.The screw of lifting handle (4) is contained on the double-screw bolt that promotes swivel nut (3), and large platen (8) is pressed on the face of cylinder head (9), by rotating lifting handle (4), makes to promote swivel nut (3) rising.Valve circle (7) is pulled out from the hole of cylinder head (9).Then, make tapering expander roll (2) and promote relative the rotating backward of swivel nut (3), unclamping little platen (5), expansion set (1) is moved to tapering expander roll (2) small end, expansion set (1) cylindrical shrinks, and just can take off valve circle (7) from expansion set (1).The circle device of taking off for valve circle (7) uses through long-term, convenient and reliable, than former method, saves man-hour, guarantees that cylinder head (9) is not damaged, and obtains economic benefit preferably.

Claims

1. take off the circle device for one kind, comprise expansion set, tapering expander roll, lifting swivel nut, lifting handle, little platen, tie rod, circle and large platen, it is characterized in that: expansion set is consistent with circle endoporus and end opening chamfer surface by outer surface, the consistent cover of centrum outer surface that inner surface is following with the tapering expander roll, mill out by 3 deciles with metal saw, link together by the tie rod be contained in their common grooves; The taper hole of expansion set is contained on the following centrum of tapering expander roll, the outside cylinder of expansion set is contained in the endoporus of circle, little platen is contained on the end face of expansion set top, promote swivel nut and be contained in its internal thread on the double-screw bolt of tapering expander roll, promote swivel nut by rotations and compress little platen the outer surface of expansion set and endoporus and the end opening chamfer surface of circle are fitted tightly; Large platen is contained on the face of cylinder head, and the internal thread of lifting handle is contained on the external screw thread of swivel nut.