CN219064348U

CN219064348U - Detection device for automobile engine piston snap ring

Info

Publication number: CN219064348U
Application number: CN202223529552.0U
Authority: CN
Inventors: 周兵
Original assignee: Wuhan Xuan Yue Intelligent Equipment Co ltd
Current assignee: Wuhan Xuan Yue Intelligent Equipment Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-23
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a detection device of a piston snap ring of an automobile engine, which comprises a base, a sliding table, a detection sensor, a detection cylinder, a lifting cylinder arranged on the base and a vertical sliding seat connected with a piston rod of the lifting cylinder, wherein the vertical sliding seat is arranged on a vertical surface of the base through a first linear guide rail; and a linear guide rail III is arranged on the horizontal plane of the vertical sliding seat, a probe rod is arranged on a sliding block of the linear guide rail III, and the probe rod is positioned at the side of the movement track of the taper pin. The utility model uses only 2 cylinders to drive, and uses a mechanical contact displacement sensor to detect the position and state of the snap ring after installation. Simple structure, reliable operation, high efficiency and better consistency of products.

Description

Detection device for automobile engine piston snap ring

Technical Field

The utility model relates to a full-automatic automobile engine piston snap ring detection device.

Background

The piston snap ring is an important part of power output of an engine and is a limiting part for preventing a piston pin connected with a connecting rod and a piston of the engine from being separated in high-speed reciprocating motion. The piston snap ring is a ring with a diameter of between ten and thirty millimeters, and the cross section of the ring is a circle. The piston snap ring is characterized in that the cross section of the piston snap ring is required to be changed in the circumferential direction, and the piston snap ring is radially contracted under the action of external force, so that the piston snap ring is convenient to install in the piston snap ring groove, and the piston snap ring is not easy to fall off due to the action of elastic expansion force of the piston snap ring after being installed in the piston hole, thereby achieving the effect of preventing the piston pin from falling off in the process of high-speed movement. Because of the special-shaped structure of the small volume of the piston snap ring, the radial compression force of the piston snap ring is required to be larger, the shapes of the piston and the connecting rod are irregular, and the positioning is difficult.

Whether the snap ring of the piston is installed, whether the installation position is correct, whether the deformation is caused, whether a plurality of snap rings are installed or not and the like can seriously influence the normal operation of the engine, so that the detection after the snap ring installation is very important work.

Disclosure of Invention

The utility model aims at the problems and provides a detection device for the piston snap ring of the automobile engine, which has a simple structure and reliable operation and can be used for detecting the piston snap ring of the automobile engine.

The technical scheme provided by the utility model is as follows: the detection device comprises a base, a sliding table, a detection sensor, a detection cylinder, a lifting cylinder arranged on the base and a vertical sliding seat connected with a piston rod of the lifting cylinder, wherein the vertical sliding seat is arranged on a vertical surface of the base through a first linear guide rail; and a linear guide rail III is arranged on the horizontal plane of the vertical sliding seat, a probe rod is arranged on a sliding block of the linear guide rail III, and the probe rod is positioned at the side of the movement track of the taper pin.

The three sets of linear guide rails are uniformly distributed along the axial direction of the taper pin, a probe rod and a spring for pressing the probe rod in a contracted state are mounted on a sliding block of each linear guide rail, the three probe rods are uniformly distributed around the taper pin, and the surrounding surfaces of the three probe rods are in an inverted conical surface shape.

And a piston positioning mandrel is arranged on the base.

When the utility model is used, the piston is supported and positioned by the positioning mandrel, the cylinder arranged on the base drives the vertical sliding table to move up and down, the vertical sliding table is provided with the detection sensor and the detection cylinder, the detection cylinder pushes the taper pin to lift, the probe rod arranged on the horizontal plane of the vertical sliding table is pushed by the taper pin to move horizontally, the horizontal movement distance of the probe rod is calculated by detecting the vertical movement distance of the taper pin, and the size of the clamp ring after being installed is judged to be correct by comparing with a theoretical value.

The utility model has simple structure, reliable operation and convenient debugging and maintenance, and can be used for detecting the piston snap ring of the automobile engine and judging whether the snap ring exists or not and whether the installation is in place or not.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the lifting cylinder of the present utility model after descending.

Fig. 3 is a schematic view of the present utility model after the detecting cylinder is lowered.

Fig. 4 is a state diagram of the snap ring detection of the present utility model.

Fig. 5 is a schematic diagram of a combined structure of three sets of linear guide rails and a probe rod.

Fig. 6 is a schematic structural view of a single set of linear guide rail three and a probe rod of the utility model.

Detailed Description

Referring to fig. 1, 2, 3, 4, 5 and 6, the utility model comprises a base 1, a piston positioning mandrel 12 arranged on the base, a lifting cylinder 2 arranged on the base 1, a vertical sliding seat 4 connected with a piston rod of the lifting cylinder 2, the vertical sliding seat 4 is arranged on a vertical plane of the base 1 through a first linear guide rail 3, a second linear guide rail 7 is arranged on the vertical sliding seat 4, a taper pin 8 is floatingly arranged on a sliding table 13 of the second linear guide rail 7, and the taper pin 8 is pressed by a spring 15. The detection sensor 6 is arranged on the vertical sliding seat 4, the detection head of the detection sensor is pressed on the taper pin 8, and the up-and-down movement stroke of the taper pin 8 can be detected by the sensor 6; the sliding table 13 of the second linear guide rail 7 is connected with a piston rod of the detection cylinder 5, and the detection cylinder 5 can push the sliding table of the second linear guide rail 7 to move up and down; three sets of linear guide rails 9 are arranged on the horizontal plane of the vertical sliding seat 4, the three sets of linear guide rails 9 are uniformly arranged along the axial direction of the taper pin 8, a probe rod 11 and a spring for pressing the probe rod to be in a contracted state are arranged on a sliding block of each linear guide rail 9, the inner edge 17 of the probe rod 11 is in a conical surface shape (the probe rod 11 shown in fig. 6 is L-shaped, the inner edge of the vertical part of the L shape is a conical surface shape or a bevel edge near one side of the taper pin 8), the three probe rods 11 are uniformly distributed around the taper pin 8, and the surrounding surfaces of the three probe rods 11 are in an inverted conical surface shape. The spring 10 presses the three probe rods 11 so that the probe rods 11 are in a contracted state. According to the utility model, the inner side of the probe rod 11 is made into an inclined plane, the vertical motion of the taper pin 8 can be converted into the horizontal motion of the probe rod 11, the three probe rods 11 are uniformly distributed in the circumferential direction, and the probe of the displacement sensor 6 is pressed on the taper pin 8.

When the utility model is used, the piston 14 is supported and positioned by the positioning mandrel 12, the lifting cylinder 2 drives the sliding seat 4 to descend, the probe rod 11 is deep into a piston 14 hole, at the moment, the probe rod 11 is in a contracted state, the probe rod 11 cannot touch the clamping ring 16, then the detection cylinder 5 is pneumatic, the piston rod of the detection cylinder 5 drives the sliding table of the linear guide rail 7 to descend, and the probe of the mechanical displacement sensor is pressed on the taper pin, so that the displacement of the taper pin can be detected in real time; the sliding table 13 of the linear guide rail 7 pushes the taper pin 8 to descend, the taper pin 8 expands the probe rod 11 until the probe rod 11 is blocked by the clamping ring 16, the stroke of the taper pin 8 is detected by the detection sensor 6, if the clamping ring 16 does not exist, the stroke of the taper pin 8 can be increased, and if the clamping ring 16 is not installed in place, the stroke of the taper pin 8 can be reduced. And thus determines whether the snap ring 16 is present or installed in place.

According to the utility model, the detection probe rod is driven to extend into a hole of a piston through a cylinder which drives the detection mechanism to move up and down, the cylinder which drives the taper pin to move up and down is driven to descend, the probe rod is expanded through inclined plane movement, so that the probe rod is tightly abutted against the clamping ring, and the expansion stroke of the probe rod is calculated through detecting the relative movement amount of the taper pin, so that whether the clamping ring is installed in place or not is judged, whether the clamping ring is deformed or not is judged, and whether a plurality of clamping rings are installed or not is judged. The utility model has simple structure, only uses 2 cylinders for driving, and uses a mechanical contact displacement sensor to detect the position and the state of the snap ring after being installed. Simple structure, reliable operation, high efficiency and better consistency of products.

Claims

1. The utility model provides a detection device of automobile engine piston snap ring which characterized in that: the device comprises a machine base, a sliding table, a detection sensor, a detection cylinder, a lifting cylinder arranged on the machine base and a vertical sliding seat connected with a piston rod of the lifting cylinder, wherein the vertical sliding seat is arranged on a vertical surface of the machine base through a first linear guide rail; and a linear guide rail III is arranged on the horizontal plane of the vertical sliding seat, a probe rod is arranged on a sliding block of the linear guide rail III, and the probe rod is positioned at the side of the movement track of the taper pin.

2. The device for detecting a piston snap ring of an automobile engine according to claim 1, wherein: the three sets of linear guide rails are uniformly distributed along the axial direction of the taper pin, a probe rod and a spring for pressing the probe rod in a contracted state are mounted on a sliding block of each linear guide rail, the three probe rods are uniformly distributed around the taper pin, and the surrounding surfaces of the three probe rods are in an inverted conical surface shape.

3. The device for detecting a piston snap ring of an automobile engine according to claim 1, wherein: the base is provided with a piston positioning mandrel.