CN220548158U - Piston ring clamp for locomotive maintenance - Google Patents

Abstract

The utility model belongs to the technical field of locomotive maintenance, relates to a locomotive diesel engine maintenance tool, and in particular relates to a piston ring fixture for locomotive maintenance. The piston ring clamping ring is of a split type structure, the piston ring clamping ring comprises a plurality of arc plates, the arc plates are connected through the clamping ring fasteners, so that the matching relation between the arc plates is more flexible, the piston ring clamping ring is conveniently buckled on a piston with the piston ring assembled, and compared with the existing annular piston ring clamp integrated with a piston ring dismounting clamp, a piston ring compressor and the like, the piston ring clamping ring is more labor-saving to open, difficult to deform and more stable to match.

Description

Piston ring clamp for locomotive maintenance

Technical Field

The utility model belongs to the technical field of locomotive overhaul, relates to a locomotive diesel engine overhaul tool, and particularly relates to a piston ring fixture for locomotive overhaul.

Background

Piston rings are widely used in various power machines, such as steam engines, diesel engines, gasoline engines, compressors, hydraulic machines, etc., and are embedded into piston grooves to seal fuel gas together with cylinders, pistons, etc. The reciprocating and rotating piston ring forms a seal between the outer circumferential surface of the ring and the cylinder and one side of the ring and the ring groove by means of a pressure difference of gas or liquid. Piston rings are mainly divided into two types: a compression ring and an oil ring, the compression ring being operable to seal a combustible mixture within the combustion chamber; the oil ring is used for scraping off excessive engine oil on the cylinder.

The piston ring is a metal elastic ring with larger outward expansion deformation, and needs to be assembled in an annular groove corresponding to the piston, in particular to an HXN5 type diesel locomotive, when the power unit is assembled, as the expansion of the piston ring cannot be directly assembled, a piston ring clamp is needed to clamp the piston ring, the piston ring is ensured to be smaller than the inner diameter of a cylinder sleeve to be smoothly assembled, the installation position of the piston ring in the piston annular groove has strict requirements, and the piston ring clamp needs to be capable of fixing the proper position of the piston ring in the piston during the installation, so that the power unit can be ensured to work normally.

The existing piston ring clamp in the market mainly comprises piston ring dismounting pliers, a piston ring compressor and the like, wherein the clamping ring parts of the existing piston ring clamp are of an integrated structure, when the existing piston ring clamp is used, the clamping ring is integrally sleeved at the position where a piston is mounted on the piston, the clamping ring is fastened by adopting bolts and nuts at the folding position of the clamping ring, and then the piston is pushed into the cylinder sleeve to mount the piston, or the piston is pulled out from the cylinder sleeve to dismount the piston. In practice, when the existing piston ring fixture is disassembled for a diesel engine of a locomotive, the following problems exist:

1. the operation space in the diesel engine of the locomotive is smaller, when the diesel engine is used, the clamping ring of the piston ring clamp is required to be aligned with the cylinder sleeve, and the piston ring cannot fall into the cylinder sleeve correctly due to slight deviation, so that the piston ring or the cylinder wall is damaged;

2. the locomotive diesel engine is large in whole size and inconvenient to move, if the piston ring is inaccurate in mounting position, the cylinder sleeve of the diesel engine needs to be frequently dismounted, so that on one hand, the diesel engine is easy to break down, on the other hand, the dismounting operation is complicated and inconvenient, repeated operation is caused, and the working efficiency is low;

3. when overhauling, need to screw up the bolt through manual, it is more time consuming and laborious, batch dismouting during overhauling, personnel intensity of labour is big, inefficiency.

Disclosure of Invention

The utility model aims to provide a piston ring fixture for locomotive maintenance, which solves the problem that the existing piston ring dismounting tool provided in the background art can cause inaccurate positioning of a piston and a cylinder for assembling a piston ring.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a locomotive overhauls and uses piston ring fixture, includes piston ring clamp ring and clamp ring fastener, the piston ring clamp ring includes a plurality of arcs, and closed annular structure is constituteed to a plurality of arcs, a plurality of arcs pass through the clamp ring fastener and connect.

Further, the piston ring clamping ring comprises a head end arc-shaped plate and a tail end arc-shaped plate, and the head end arc-shaped plate and the tail end arc-shaped plate form a circular annular structure.

Further, the clamp ring fastener comprises a connecting structure and a locking structure;

one end of the head end arc plate is connected with one end of the tail end arc plate through a connecting structure, and the other end of the head end arc plate and the other end of the tail end arc plate are free ends; the free end of the head end arc plate is buckled with the free end of the tail end arc plate through a locking structure.

Further, the piston ring clamping ring further comprises one or more middle arc plates, the middle arc plates are arranged between the head end arc plates and the tail end arc plates, and the head end arc plates, the middle arc plates and the tail end arc plates are connected end to form a circular annular structure.

Further, the clamp ring fastener comprises a connecting structure and a locking structure;

the middle arc plate is connected with the head end arc plate or the middle arc plate or the tail end arc plate through a connecting structure, the head end arc plate is a free end relative to the other end of the middle arc plate, the tail end arc plate is a free end relative to the other end of the middle arc plate, and the free end of the head end arc plate is buckled with the free end of the tail end arc plate through a locking structure.

Further, the structure of the head end arc plate is the same as that of the tail end arc plate.

Further, the lock catch structure comprises a first locking base, a second locking base, a lock ring, a lock tongue and a lock handle, wherein the first locking base is arranged on a head end arc plate, the second locking base is arranged on a tail end arc plate, and the positions of the first locking base and the second locking base correspond to each other;

the lock tongue is fixed on first locking base, the lock handle sets up on the second locking base, the lock handle is articulated with the second locking base, and the catch is articulated with the lock handle, catch and lock tongue overlap joint.

Further, the lock catch structure further comprises a positioning pin shaft, the positioning pin shaft is arranged on the second locking base, a pin hole is formed in the first locking base, the positioning pin shaft corresponds to the pin hole in position, and when the locking ring is in lap joint with the lock tongue, the positioning pin shaft is inserted into the pin hole.

Further, the connecting structure is a hinge.

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

1. the piston ring clamp comprises a piston ring clamp ring and a clamp ring fastener, wherein the piston ring clamp ring comprises a plurality of arc plates, the arc plates form a closed annular structure, the arc plates are connected through the clamp ring fastener, the piston ring clamp ring is fixed at the position of a piston in the piston during installation, the piston ring is prevented from being opened by itself, the piston ring clamp is arranged into a split type structure, and the arc plates form a closed circular annular structure, so that the matching relation between the piston ring clamp and the piston is more stable, the piston is more easy to align with a cylinder, the piston cannot fall into a cylinder sleeve correctly, the piston ring is prevented from being damaged, and the normal work of a power unit is ensured;

meanwhile, the piston ring clamp is arranged into a split structure, so that the matching relation between the arc plates is more flexible, the piston ring clamp ring is conveniently buckled on the piston with the assembled piston ring, the quick assembly and disassembly during maintenance are ensured, and the working efficiency is improved.

2. Compared with the prior piston pliers and piston ring compressor which are fastened by utilizing bolts, the utility model has the advantages that the head end arc-shaped plate and the tail end arc-shaped plate are fastened by the locking structure, the bolt adjusting device is more convenient and labor-saving, and the working efficiency is improved; further, set up corresponding locating pin axle and pinhole on hasp structure for hasp structure's spring bolt and catch cooperation are more stable, and the piston of being convenient for is aligned with the cylinder further, prevents when putting into the piston, and the piston ring can't fall into in the cylinder liner correctly, causes the damage to piston ring and cylinder wall.

Drawings

FIG. 1 is a schematic view of a piston ring fixture according to example 1;

FIG. 2 is an enlarged schematic view of the structure at A, B;

FIG. 3 is an enlarged schematic view of the structure at C;

FIG. 4 is a schematic view of a piston ring fixture in example 2;

the novel piston ring comprises a piston ring clamping ring 1, a head end arc-shaped plate 11, a tail end arc-shaped plate 12, a middle arc-shaped plate 13, a 2-connecting structure, a 21-first hinge, a 22-second hinge, a 3-locking structure, a 31-first locking base, a 32-second locking base, a 33-locking ring, a 34-locking tongue, a 35-locking handle and a 36-positioning pin shaft.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the present utility model is not limited to the embodiments described below.

Example 1

Referring to fig. 1, the present embodiment provides a piston ring fixture for locomotive maintenance, which includes a piston ring clamping ring 1 and a clamping ring fastener, wherein the piston ring fixture is of a split structure, a plurality of arc plates form a closed circular ring structure, and the arc plates are connected through the clamping ring fastener.

Specifically, in this embodiment 2, the piston ring clamping ring 1 includes a head end arc plate 11, a tail end arc plate 12 and a middle arc plate 13, in this embodiment, the middle arc plate 13 is provided with one, and in practice, a plurality of middle arc plates can be provided as required, and the head end arc plate 11, the tail end arc plate 12 and the middle arc plate 13 are assembled end to form a closed circular ring structure, so that the matching relationship between the piston ring clamp and the piston is more stable, and the piston ring is convenient to clamp.

Further, the structures of the head end arc plate 11, the tail end arc plate 12 and the middle arc plate 13 are the same, namely, the central angles of the head end arc plate 11, the tail end arc plate 12 and the middle arc plate 13 are 120 degrees, so that stable clamping and fastening of the piston ring are ensured, the piston is more easily aligned with the cylinder sleeve, the piston ring is prevented from failing to fall into the cylinder sleeve correctly, and damage is caused to the piston ring or the cylinder wall.

Further, the top and the bottom of arc set up outside turn-ups, and the diameter of the circular annular structure that head end arc 11, terminal arc 12 and middle arc 13 constitute is 250mm, and the top and the bottom of arc set up outside turn-ups, strengthen the structural strength of piston ring clamp ring 1, and during the use, top or the bottom butt of arc is at the edge of cylinder liner, and the turn-ups can increase the area of contact with the cylinder liner, forms stable cooperation with the cylinder liner.

Referring to fig. 2, the connecting structure 2 is a hinge, which is a first hinge 21 and a second hinge 22 respectively, the head end arc plate 11 is connected with the middle arc plate 13 through the first hinge 21, and the middle arc plate 13 is connected with the tail end arc plate 12 through the second hinge 22, so that the head end arc plate 11, the middle arc plate 13 and the tail end arc plate 12 are connected end to end in sequence; the other end of the head end arc plate 11 relative to the middle arc plate 13 is a free end, the other end of the tail end arc plate 12 relative to the middle arc plate 13 is a free end, and the free end of the head end arc plate 11 is buckled with the free end of the tail end arc plate 12 through the locking structure 3.

The first hinge 21 enables the head end arc-shaped plate 11 to be movably connected with the middle arc-shaped plate 13, the second hinge 22 enables the tail end arc-shaped plate 12 to be movably connected with the middle arc-shaped plate 13, and therefore the whole piston ring clamping ring 1 can be opened or buckled, the piston ring clamping ring 1 can be buckled on a piston with assembled piston rings conveniently, quick assembly and disassembly are guaranteed during maintenance, and working efficiency is improved.

Referring to fig. 3, the locking structure 3 includes a first locking base 31, a second locking base 32, a locking tongue 34, a locking ring 33 and a locking handle 35, wherein the first locking base 31 is disposed on a head end arc plate, the second locking base 32 is disposed on a tail end arc plate, the first locking base 31 corresponds to the second locking base 32 in position, the locking tongue 34 is fixed on the first locking base 31, the locking handle 35 is disposed on the second locking base 32, the locking handle 35 is hinged with the second locking base 32, the locking ring 33 is hinged with the locking handle 35, the locking ring 33 is overlapped with the locking tongue 34, and when the locking ring 33 is overlapped with the locking tongue 34, the head end arc plate 11 and the tail end arc plate 12 are buckled to form a closed circular ring structure for clamping and fastening the piston ring.

Further, in order to enable the locking structure 3 to form stable clamping on the piston ring, the locking structure 3 further comprises a positioning pin shaft 36, the positioning pin shaft 36 is arranged on the second locking base 32, a pin hole is formed in the first locking base 31, the positioning pin shaft 36 corresponds to the pin hole, when the locking ring 33 is overlapped with the locking tongue 34, the positioning pin shaft 36 is inserted into the pin hole, and limit is formed on cooperation between the locking ring 33 and the locking tongue 34.

The piston ring fixture for locomotive overhaul of the embodiment has the following working principle:

1. the piston rings are placed in the piston, the placement position is correct, the direction and the opening position of the piston rings are noted, and the piston rings are staggered by 120 degrees when being installed.

2. The first hinge 21 between the head end arc plate 11 and the middle arc plate 13 is opened, the second hinge 22 between the tail end arc plate 12 and the middle arc plate 13 is opened, the piston ring clamping ring 1 formed by the head end arc plate 11, the tail end arc plate 12 and the middle arc plate 13 is buckled on a piston and a piston ring, and then the locking structure 3 on the head end arc plate 11 and the tail end arc plate 12 is buckled with each other, so that the piston ring clamping ring 1 forms a closed circular ring structure to clamp and fasten the piston ring.

3. When the piston and the piston ring are installed, the cylinder sleeve falls down or the piston is pushed into the cylinder sleeve, and after the piston ring falls into the cylinder sleeve correctly, the piston ring clamp is separated from the piston to fall off.

4. When the piston and the piston ring are disassembled, after the piston is partially ejected out of the cylinder sleeve, the piston ring clamp is clamped on the piston ring, and then the piston is pulled out of the cylinder sleeve entirely, so that the separation of the piston and the cylinder barrel is completed.

Example 2

Referring to fig. 4, the present embodiment provides a piston ring fixture for locomotive maintenance, including a piston ring clamping ring 1 and a clamping ring fastener, the piston ring fixture is of a split structure, the piston ring clamping ring 1 includes a plurality of arc plates, the plurality of arc plates form a closed circular ring structure, and the plurality of arc plates are connected through the clamping ring fastener.

The difference from the above embodiment 1 is that the structure of the piston ring clamping ring 2 in this embodiment is simplified, the piston ring clamping ring 1 includes two arcuate plates, namely, a head arcuate plate 11 and a tail arcuate plate 12, respectively, the head arcuate plate 11 and the tail arcuate plate 12 are in the same semicircular structure, and the head arcuate plate 11 and the tail arcuate plate 12 are connected to each other and cooperate to form a circular annular structure for clamping and fastening the piston ring.

The clamp ring fastener comprises a connecting structure 2 and a locking structure 3, wherein the connecting structure 2 is the same as the connecting structure 2 in the embodiment 1, and is a hinge, and the locking structure 3 is the same as the locking structure 3 in the embodiment 1. Specifically, one end of the head end arc plate 11 is connected with one end of the tail end arc plate 12 through a hinge, the other end of the head end arc plate 11 is a free end, the other end of the tail end arc plate 12 is a free end, and the free end of the head end arc plate 11 is buckled with the free end of the tail end arc plate 12 through the locking structure 3.

In summary, the piston ring clamping ring is of a split structure, the piston ring clamping ring comprises a plurality of arc plates, the arc plates are movably connected through the connecting structure, so that the opening or buckling of the head end arc plate and the tail end arc plate is facilitated, the matching relationship between the arc plates is more flexible, the piston ring clamping ring is conveniently buckled on the piston with the piston ring assembled, and the piston ring is clamped; compared with the existing integrated clamping ring such as a piston ring dismounting clamp and a piston ring compressor, the assembly is more labor-saving and space-saving, is suitable for narrow environments such as a locomotive fuel engine, is not easy to deform, is more stable to cooperate, prevents the piston ring from being opened by itself, is easier to align the piston with a cylinder, and prevents the piston ring from failing to fall into a cylinder sleeve correctly and damage the piston ring;

meanwhile, the head end arc-shaped plate and the tail end arc-shaped plate are buckled through the locking structure, so that compared with the existing piston pliers and piston ring compressors, the piston pliers and the piston ring compressors are adjusted and fastened by bolts, the piston pliers are more convenient and labor-saving, and the working efficiency is improved;

further, set up corresponding locating pin axle and pinhole on hasp structure for hasp structure's spring bolt and catch cooperation are more stable, and the piston of being convenient for aligns with the cylinder, prevents when putting into the piston, and the piston ring can't fall into in the cylinder liner correctly, causes the damage to the piston ring.

Claims (9)

1. A piston ring fixture for locomotive maintenance is characterized in that: the piston ring clamping ring comprises a piston ring clamping ring (1) and a clamping ring fastener, wherein the piston ring clamping ring (1) comprises a plurality of arc-shaped plates, the arc-shaped plates form a closed annular structure, and the arc-shaped plates are connected through the clamping ring fastener.

2. The piston ring fixture for locomotive inspection according to claim 1, wherein: the piston ring clamping ring (1) comprises a head end arc-shaped plate (11) and a tail end arc-shaped plate (12), and the head end arc-shaped plate (11) and the tail end arc-shaped plate (12) form a circular annular structure.

3. The piston ring fixture for locomotive inspection according to claim 2, wherein: the clamping ring fastener comprises a connecting structure (2) and a locking structure (3);

one end of the head end arc plate (11) is connected with one end of the tail end arc plate (12) through a connecting structure (2), and the other end of the head end arc plate (11) and the other end of the tail end arc plate (12) are both free ends; the free end of the head end arc plate (11) is buckled with the free end of the tail end arc plate (12) through the locking structure (3).

4. The piston ring fixture for locomotive inspection according to claim 2, wherein: the piston ring clamp ring (1) further comprises one or more middle arc plates (13), the middle arc plates (13) are arranged between the head end arc plates (11) and the tail end arc plates (12), and the head end arc plates (11), the middle arc plates (13) and the tail end arc plates are connected end to form a circular annular structure.

5. The piston ring fixture for locomotive servicing according to claim 4, wherein: the clamping ring fastener comprises a connecting structure (2) and a locking structure (3);

the middle arc plate (13) is connected with the head end arc plate (11) or the middle arc plate (13) or the tail end arc plate (12) through a connecting structure, the head end arc plate (11) is a free end relative to the other end of the middle arc plate (13), the tail end arc plate (12) is a free end relative to the other end of the middle arc plate (13), and the free end of the head end arc plate (11) is buckled with the free end of the tail end arc plate (12) through a locking structure (3).

6. The piston ring fixture for locomotive inspection according to claim 3 or 5, wherein: the structure of the head end arc-shaped plate (11) is the same as that of the tail end arc-shaped plate (12).

7. The piston ring fixture for locomotive inspection according to claim 6, wherein: the locking structure (3) comprises a first locking base (31), a second locking base (32), a locking ring (33), a lock tongue (34) and a locking handle (35), wherein the first locking base (31) is arranged on a head end arc-shaped plate (11), the second locking base (32) is arranged on a tail end arc-shaped plate (12), and the positions of the first locking base (31) and the second locking base (32) correspond to each other;

the lock tongue (34) is fixed on the first locking base (31), the lock handle (35) is arranged on the second locking base (32), the lock handle (35) is hinged with the second locking base (32), the lock ring (33) is hinged with the lock handle (35), and the lock ring (33) is overlapped with the lock tongue (34).

8. The piston ring fixture for locomotive service according to claim 7, wherein: the locking structure (3) further comprises a positioning pin shaft (36), the positioning pin shaft (36) is arranged on the second locking base (32), a pin hole is formed in the first locking base (31), the positioning pin shaft (36) corresponds to the pin hole in position, and when the locking ring (33) is in lap joint with the lock tongue (34), the positioning pin shaft (36) is inserted into the pin hole.

9. The piston ring fixture for locomotive inspection according to claim 8, wherein: the connecting structure (2) is a hinge.