CN212947582U

CN212947582U - Piston ring assembly and disassembly tools

Info

Publication number: CN212947582U
Application number: CN202021762549.1U
Authority: CN
Inventors: 马晶秋; 张海鑫; 陈天凤; 贺文彬
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-13
Anticipated expiration: 2030-08-21

Abstract

The utility model belongs to the technical field of engine maintenance tools, in particular to a piston ring dismounting tool, which comprises an operation part, a transmission part and a fixed part, wherein the operation part comprises a bearing, a rotating screw rod and a connecting piece, the rotating screw rod passes through the bearing, and the lower end of the rotating screw rod is in threaded connection with the connecting piece; the transmission component comprises four connecting rods, and two ends of each connecting rod are respectively hinged to the operation component and the fixing component; the engagement groove of the fixing member is used for engaging the opening of the piston ring. During operation, rotate rotatory screw rod and make its and connecting piece produce relative motion, make the connecting piece slide from top to bottom along the axial of rotatory screw rod, drive the connecting rod contained angle of connecting piece both sides and change to make two block groove keep away from or be close to, accomplish the expansion or the shrink of piston ring. The piston ring disassembling tool provides uniform bending moment for the piston ring, so that the internal stress of the piston ring is consistent; the rotary screw is provided with the bearing, so that the operation is stable, the piston ring cannot be damaged due to sudden excessive force, and the safety is higher.

Description

Piston ring assembly and disassembly tools

Technical Field

The utility model relates to an engine overhaul tool technical field especially relates to a piston ring assembly and disassembly tools.

Background

The piston ring is embedded into the piston groove of the diesel engine, is used for sealing combustible mixed gas in a combustion chamber or scraping redundant engine oil on a cylinder, and is a metal elastic ring with larger outward expansion deformation. The piston ring has a severe working environment and is easy to corrode at high temperature, and the piston ring is used as a quick-wear part of a diesel engine and needs to be periodically disassembled, checked or replaced. In order to ensure the reliability of the machine operation, it is necessary to avoid irreversible plastic deformation of the piston ring during the use of the tool.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a piston ring assembly and disassembly tools, simple structure, convenient to use, the operator can easily expand the piston ring, and can effectively avoid the concentrated and plastic deformation problem of stress of piston ring expansion in-process, prolongs the life of piston ring.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a piston ring assembly and disassembly tools, include:

the operating component comprises a bearing, a rotating screw rod and a connecting piece, wherein the rotating screw rod penetrates through the bearing and is in threaded connection with the connecting piece, and the connecting piece can be driven to move along the axial direction of the rotating screw rod by rotating the rotating screw rod;

the transmission component comprises a first connecting rod bearing and a second connecting rod bearing which are respectively hinged to two sides of the bearing, and a third connecting rod and a fourth connecting rod which are respectively hinged to two sides of the connecting piece;

the fixing component comprises a first fixing piece and a second fixing piece which are both provided with a clamping groove, and the clamping groove is used for clamping the piston ring; the first fixing piece is hinged with the first connecting rod and the third connecting rod respectively; the second fixing piece is hinged to the second connecting rod and the fourth connecting rod respectively.

As a preferred structure of the utility model, the connecting piece include the connecting seat and with connecting seat fixed connection's sleeve, the sleeve with rotatory screw rod threaded connection, the connecting seat with third connecting rod and fourth connecting rod are articulated.

As the utility model discloses a preferred structure, rotatory screw rod lower extreme outside has first screw thread section, the sleeve is inside to have the second screw thread section, first screw thread section is connected with the cooperation of second screw thread section.

As an optimized structure of the utility model, the rotatory screw rod upper end has first operating handle, first operating handle end has the first ball of holding of convenient handheld.

As an optimized structure of the utility model, be equipped with second operating handle on the sleeve, second operating handle perpendicular to telescopic outer wall, second operating handle end has the handheld ball of convenient handheld second.

As a preferred structure of the utility model, first mounting with the second mounting is the triangle-shaped thick plate, the block groove set up in the one corner of triangle-shaped thick plate, the block groove of first mounting is close to the articulated department of third connecting rod, the block groove of second mounting is close to the articulated department of fourth connecting rod.

As a preferred structure of the utility model, the quantity of drive disk assembly is two sets of, two sets of drive disk assembly parallel arrangement in fixed part's both sides.

As a preferred structure of the utility model, the bearing both sides are equipped with the mount pad, the mount pad has the through-hole, is used for the installation respectively first connecting rod with the second connecting rod.

As an optimized structure of the present invention, the length of the third connecting rod and the fourth connecting rod is less than the length of the first connecting rod and the second connecting rod.

As a preferred structure of the present invention, the transmission component is hinged to the operation component and the fixing component by a cylindrical pin.

The utility model has the advantages that: the utility model provides a piston ring assembly and disassembly tools, including operating element, transmission part and fixed part, the transmission part includes four connecting rods, the both ends of connecting rod articulate respectively on operating element and fixed part; the engagement groove of the fixing member is used for engaging the opening of the piston ring. During operation, the operator rotates rotatory screw rod, and rotatory screw rod produces relative motion with the connecting piece, makes the connecting piece slide from top to bottom along the axial of rotatory screw rod, and the connecting rod contained angle that drives the connecting piece both sides changes to make two block groove keep away from or be close to, accomplish the expansion or the shrink of piston ring. The tool for disassembling and assembling the piston ring provides uniform bending moment for all positions of the whole piston ring except for a direct action area of the tool when in work, the internal stress of the piston ring is consistent, and irreversible plastic deformation is avoided; the rotary screw is provided with the bearing, so that the operation is stable, the piston ring cannot be damaged due to sudden excessive force, and the safety is high.

Drawings

Fig. 1 is a schematic structural view of a piston ring dismounting tool according to an embodiment of the present invention;

fig. 2 is a front view of a piston ring attaching/detaching tool according to an embodiment of the present invention.

In the figure:

1. an operating member; 11. a bearing; 12. rotating the screw; 121. a first operating handle; 122. a first handheld ball; 13. a connecting member; 131. a sleeve; 132. a second operating handle; 133. a second handheld ball;

2. a transmission member; 21. a first link; 22. a second link; 23. a third link; 24. a fourth link;

3. a fixing member; 31. a first fixing member; 311. a first engaging groove; 32. a second fixing member; 321 second engaging groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, an embodiment of the present invention provides a piston ring dismounting tool, which includes an operating component 1, a transmission component 2, and a fixing component 3. The operating part 1 comprises a bearing 11, a rotary screw 12 and a connecting piece 13, wherein the rotary screw 12 penetrates through the bearing 11 and is in threaded connection with the connecting piece 13, and the rotary screw 12 and the connecting piece 13 can move relatively by rotating to drive the connecting piece 13 to slide up and down along the axial direction of the rotary screw 12. In the embodiment, the bearing 11 is arranged for the rotary screw 12, so that the rotary operation is stable, the piston ring cannot be damaged due to sudden excessive force, the irreversible plastic deformation is avoided, and the safety is high. The transmission part 2 comprises four connecting rods, namely a first connecting rod 21, a second connecting rod 22, a third connecting rod 23 and a fourth connecting rod 24. Preferably, the lengths of the third link 23 and the fourth link 24 are smaller than the lengths of the first link 21 and the second link 22. One end of the first connecting rod 21 and one end of the second connecting rod 22 are hinged to two sides of the bearing 11, and one end of the third connecting rod 23 and one end of the fourth connecting rod 24 are hinged to two sides of the connecting piece 13. The fixing member 3 has engaging grooves for engaging both end surfaces of the opening of the piston ring. The fixed part 3 comprises a first fixed part 31 and a second fixed part 32, and the other end of the first connecting rod 21 and the other end of the third connecting rod 23 are hinged on the first fixed part 31; the other end of the second connecting rod 22 and the other end of the fourth connecting rod 24 are hinged on the second fixing piece 32. The first fixing member 31 is provided with a first engaging groove 311, the second fixing member 32 is provided with a second engaging groove 321, and the piston ring can be firmly fixed by the engagement of the first engaging groove 311 and the second engaging groove 321. When the piston ring works, firstly, two opening ends of the piston ring are respectively clamped into the first clamping groove 311 and the second clamping groove 321, and the first clamping groove 311 and the second clamping groove 321 are L-shaped and can be well clamped with the section of the opening end of the piston ring; then, an operator rotates the rotary screw 12, the rotary screw 12 and the connecting member 13 generate relative motion, so that the connecting member 13 slides up and down along the axial direction of the rotary screw 12, and the sliding connecting member 13 drives the included angles of the third connecting rod 23 and the fourth connecting rod 24 at two sides to change, so that the first engaging groove 311 and the second engaging groove 321 are far away from or close to each other. When the connecting piece 13 slides downwards along the axial direction of the rotating screw 12, the included angle between the third connecting rod 23 and the fourth connecting rod 24 is increased, the first clamping groove 311 and the second clamping groove 321 are far away from each other to drive the opening of the piston ring in the clamping groove to expand, and at the moment, the piston ring can be placed in or taken down from the corresponding position of the diesel engine; when the rotary screw 12 is rotated in the opposite direction, the connecting member 13 slides upward along the axial direction of the rotary screw 12, the angle between the third link 23 and the fourth link 24 decreases, the first engaging groove 311 and the second engaging groove 321 approach each other, and the expanded piston ring opening is restored, and at this time, the piston ring can be removed from the tool.

Further, the connecting member 13 includes a connecting seat and a sleeve 131 fixedly connected with the connecting seat, the sleeve 131 is in threaded connection with the rotary screw 12, and the connecting seat is hinged with the third connecting rod 23 and the fourth connecting rod 24. The sleeve 131 serves as a guide for the rotary screw 12, ensuring smooth up-and-down movement of the connecting member 13 without deformation of the piston ring due to shear forces.

Further, the lower end of the rotary screw 12 is externally provided with a first thread section, and the sleeve 131 is internally provided with a second thread section; the relative movement of the rotary screw 12 and the sleeve 131 is achieved by a threaded connection, the rotation of which allows a finer control of the deformation of the piston rings.

Further, the upper end of the rotary screw 12 is provided with a first operating handle 121, the first operating handle 121 is perpendicularly intersected with the rotary screw 12, and the end of the first operating handle 121 is provided with a first holding ball 122 convenient for holding. The first operating handle 121 facilitates hand-held operation by an operator. Preferably, the sleeve 131 is provided with a second operating handle 132, the second operating handle 132 is perpendicular to the outer wall of the sleeve 131, and the end of the second operating handle 132 is provided with a second holding ball 133 convenient for holding. When the tool is in use, an operator holds the second operating handle 132 with one hand and rotates the first operating handle 121 with the other hand, so that the tool can be well clamped, and interference of the hand on the motion of the connecting rod can be avoided.

Further, the first fixing member 31 and the second fixing member 32 are both triangular thick plates, the engaging groove is disposed at one corner of the triangular thick plate, the engaging groove of the first fixing member 31 is close to the hinge joint of the third connecting rod 23, and the engaging groove of the second fixing member 32 is close to the hinge joint of the fourth connecting rod 24; the clamping groove is L-shaped. The L-shaped clamping groove is more beneficial to clamping the opening of the piston ring, so that the piston ring is fixed reliably.

Further, the number of the transmission parts 2 is two, and the two transmission parts 2 are arranged on two sides of the fixed part 3 in parallel. Specifically, each link is double-layered, two layers of the first link 21 and the third link 23 are disposed in parallel on both upper and lower surfaces of the first fixing member 31, and two layers of the second link 22 and the fourth link 24 are disposed in parallel on both upper and lower surfaces of the second fixing member 32. The connecting rod with the double-layer structure ensures the stability of the movement mechanism and also ensures that the whole weight of the disassembling tool is lighter.

Further, two sides of the bearing 11 are provided with mounting seats, the mounting seats are provided with through holes, the two first connecting rods 21 are hinged with the bearing 11 through the through holes on one side, and the two second connecting rods 22 are hinged with the bearing 11 through the through holes on the other side. Preferably, the transmission part 2, the operation part 1 and the fixing part 3 are hinged through cylindrical pins, the cylindrical pins are hinged in a mode that the operation of the disassembling tool is simple and reliable, and the hinge point cannot fail.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A piston ring assembly and disassembly tool, comprising:

the operating component (1) comprises a bearing (11), a rotating screw (12) and a connecting piece (13), wherein the rotating screw (12) penetrates through the bearing (11) and is in threaded connection with the connecting piece (13), and the connecting piece (13) can be driven to move along the axial direction of the rotating screw (12) by rotating the rotating screw (12);

the transmission component (2) comprises a first connecting rod (21) and a second connecting rod (22) which are respectively hinged to two sides of the bearing (11), and a third connecting rod (23) and a fourth connecting rod (24) which are respectively hinged to two sides of the connecting piece (13);

the fixing component (3) comprises a first fixing piece (31) and a second fixing piece (32) which are provided with clamping grooves respectively, and the clamping grooves are used for clamping piston rings; the first fixing piece (31) is hinged with the first connecting rod (21) and the third connecting rod (23) respectively; the second fixing part (32) is hinged with the second connecting rod (22) and the fourth connecting rod (24) respectively.

2. The piston ring disassembly tool of claim 1, wherein the connecting member (13) comprises a connecting seat and a sleeve (131) fixedly connected with the connecting seat, the sleeve (131) is in threaded connection with the rotary screw (12), and the connecting seat is hinged with the third connecting rod (23) and the fourth connecting rod (24).

3. The piston ring assembly and disassembly tool as set forth in claim 2, wherein the rotary screw (12) has a first thread section on the outside at the lower end thereof, and a second thread section on the inside of the sleeve (131), and the first thread section is connected with the second thread section in a matching manner.

4. The piston ring disassembling tool according to claim 1, characterized in that the upper end of the rotary screw (12) is provided with a first operating handle (121), and the end of the first operating handle (121) is provided with a first handheld ball (122) convenient for being held by hands.

5. The piston ring disassembling tool according to claim 2, characterized in that a second operating handle (132) is provided on the sleeve (131), the second operating handle (132) is perpendicular to the outer wall of the sleeve (131), and a second holding ball (133) convenient to hold is provided at the end of the second operating handle (132).

6. The piston ring disassembly tool of claim 1, wherein the first fixture (31) and the second fixture (32) are each a triangular thick plate, the engaging groove is disposed at one corner of the triangular thick plate, the engaging groove of the first fixture (31) is near the hinge joint of the third connecting rod (23), and the engaging groove of the second fixture (32) is near the hinge joint of the fourth connecting rod (24).

7. The piston ring disassembly tool of claim 1, wherein the number of the transmission members (2) is two, and the two transmission members (2) are arranged in parallel on both sides of the fixed member (3).

8. Piston ring disassembly tool according to claim 1, characterized in that the bearing (11) is provided on both sides with mounting seats having through holes for mounting the first connecting rod (21) and the second connecting rod (22), respectively.

9. Piston ring disassembly tool according to claim 1, characterized in that the length of the third and fourth connecting rod (23, 24) is smaller than the length of the first and second connecting rod (21, 22).

10. Piston ring assembly and disassembly tool according to any of claims 1 to 9, wherein the articulation of the transmission part (2) with the operating part (1) and the fixed part (3) is achieved by means of a cylindrical pin.