Handling device for servicing a piston with a small end attached to the piston via a piston pin

Patent metadata

Field	Value
Publication number	US-11628522-B2
Application number	US-201917282504-A
Country	US
Kind code	B2
Filing date	Sep 19, 2019
Priority date	Oct 4, 2018
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A handling device for servicing a piston with a small end attached to the piston via a piston pin, having a basic frame, a receiving device that is pivotable or tiltable relative to the basic frame for the piston removed from an internal combustion engine, an actuator for pivoting or tilting the receiving device relative to the basic frame, and a locking device via which the receiving device is lockable on the basic frame in different pivot positions or tilting positions.

First claim

The invention claimed is:

1. A handling device for servicing a piston having a small end attached to the piston via a piston pin, comprising: a basic frame having bearing struts; a receiving device that is pivotable or tiltable relative to the basic frame via the bearing struts for the piston removed from an internal combustion engine, the receiving device comprises: a base plate, which acts on the bearing struts via pivot arms; at least two spindles each having a first end coupled to the base plate and a second end opposite the first end; and a clamping bridge coupled to a respective second end of each of the spindles, wherein the piston can be put down on the base plate and axially clamped via the spindles and the clamping bridge between the base plate and the clamping bridge; an actuator that pivots or tilts the receiving device relative to the basic frame; and a lock configured to lock the receiving device on the basic frame in different pivot positions or tilting positions.

2. The handling device according to claim 1 , wherein the basic frame comprises:
feet;
cross members;
side members; and
the bearing struts,
wherein the cross members and side members lie in a plane that is horizontally extending,
wherein the feet, relative to the plane, stand away downwards in a first direction and the bearing struts stand away upwards relative to the plane in a second direction.

3. The handling device according to claim 1 , wherein the basic frame further comprises a holder configured to hold the piston pin to separate the small end from the piston.

4. The handling device according to claim 1 , wherein the actuator comprises a self-locking gear that is manually actuatable via a hand wheel, the self-locking gear self-lockingly holds the receiving device in any desired pivot position or tilting position.

5. The handling device according to claim 1 , wherein the lock comprises:
a locking pin,
wherein the receiving device is pivotable or tiltable relative to the basic frame by the actuator exclusively with the locking pin disengaged.

6. The handling device according to claim 1 , further comprising:
an adapter interacting with the base plate,
wherein the adapter is positionable in a defined pivot position or tilting position of the receiving device on the base plate to hold the small end in the piston with the piston pin removed.

7. The handling device according to claim 6 ,
wherein the base plate of the receiving device defines a recess,
wherein the small end held by the adapter can be removed from the piston using the recess.

8. The handling device according to claim 7 , wherein the recess of the base plate, with the small end removed, serves as access for a tool for disassembling the piston into a piston upper part and a piston lower part.

9. The handling device according to claim 1 , wherein a longitudinal axis of at least two spindles is perpendicular to an axis about which the receiving device pivots or tilts.

10. A method for servicing a piston with a small end attached to the piston via a piston pin with a handling device, comprising:
removing the piston from an internal combustion engine;
arranging and clamping the piston on a receiving device of a handling device, wherein the receiving device assumes a defined pivot position or a defined tilting position relative to a basic frame, which is locked via a lock;
unlocking the lock;
pivoting or tilting the receiving device with an actuator into a service pivot position or a service tilting position defined for a service to be carried out;
locking the lock in the service pivot position or the service tilting position and performing the respective service,
coupling at least two spindles to a base plate each having a first end coupled to the base plate and a second end opposite the first end;
coupling a clamping bridge to the second end of each of the spindles;
putting the piston down on the base plate; and,
clamping the piston via the at least two spindles and clamping bridge between the base plate and a clamping bridge.

11. The method according to claim 10 ,
wherein in the defined pivot position or the defined tilting position of the receiving device, in which the piston is arranged and clamped on the receiving device, a base plate of the receiving device is directed downwards or facing feet of the basic frame, and
wherein in the defined pivot position or the defined tilting position of the receiving device, in which the piston pin and the small end can be disassembled from the piston, the base plate of the receiving device is directed upwards or facing away from the feet of the basic frame.

Assignees

• Man Energy Solutions Se

Inventors

• Kottre Ewald
• Stegmayr Mario

Classifications

• B23Q3/06

  Work-clamping means · CPC title

• B25H1/10

  with provision for adjusting holders for tool or work · CPC title

• B23P6/02 Primary

  Pistons or cylinders · CPC title

• B25H5/00

  Tool, instrument or work supports or storage means used in association with vehicles; Workers' supports, e.g. mechanics' creepers {(collecting or removing exhaust gases in workshops B08B15/002; vehicle lifting devices, e.g. jacks, platforms or ramps B66F)} · CPC title

• B23P19/042

  specially adapted for combustion engines (shape of casings adapted to facilitate fitting or dismantling of engine parts for combustion engines F02F7/0046) · CPC title