Pressing wheel device of cylinder sleeve piston surface crack detector

Abstract

The utility model relates to a pressing wheel device of a cylinder sleeve piston surface crack detector, and relates to the field of cylinder sleeve piston surface crack detection equipment, the pressing wheel device comprises a mounting bracket, a limiting cylinder, a connecting rod mechanism and a limiting rod, the mounting bracket is mounted on the detector, the limiting cylinder is mounted on the mounting bracket, and the connecting rod mechanism is mounted on the limiting cylinder. The limiting rod is installed on the limiting air cylinder through a connecting rod mechanism. According to the invention, the pinch roller device not only can meet stable contact, but also can ensure the effect of uniform scanning.

Description

Technical Field

[0001] This application relates to the field of cylinder liner and piston crack detection equipment, and in particular to a pressure roller device for a cylinder liner and piston surface crack detector. Background Technology

[0002] The piston surface crack detector is a precision instrument specifically designed to detect minute cracks, defects, or fatigue damage on the surface of engine cylinder liners and pistons. Its core function is to prevent engine failures and ensure safe equipment operation. It is primarily used in the manufacturing and maintenance of internal combustion engines or hydraulic systems in the automotive, shipbuilding, aviation, and construction machinery industries.

[0003] In existing crack detection technologies, various pressure roller devices are typically used to achieve positioning and guiding functions to ensure stable contact and uniform scanning motion between the workpiece and the sensor. These devices mainly include simple spring-loaded structures, manually adjustable mechanical pressure rollers, and pneumatically driven single-bar mechanisms. Spring-loaded structures provide pressure through elastic elements to achieve contact between the workpiece and the sensor; manually adjustable mechanical pressure rollers rely on manual operation to adjust their position and are suitable for applications with low precision requirements; while pneumatically driven single-bar mechanisms use cylinder action to drive the pressure roller movement, offering a certain degree of automation, but with limited flexibility and adaptability.

[0004] The aforementioned conventional methods have significant shortcomings in practical applications, especially when dealing with complex workpiece surfaces or high-precision inspection requirements, as existing pressure roller devices struggle to simultaneously meet the requirements of stable contact and uniform scanning. Utility Model Content

[0005] In order to ensure both stable contact and uniform scanning, this application provides a pressure roller device for a cylinder liner piston surface crack detector.

[0006] The pressure roller device of the cylinder liner piston surface crack detector provided in this application adopts the following technical solution:

[0007] A pressure roller device for a cylinder liner piston surface crack detector includes a mounting bracket, a limiting cylinder, a connecting rod mechanism, and a limiting rod. The mounting bracket is mounted on the detector, the limiting cylinder is mounted on the mounting bracket, and the limiting rod is mounted on the limiting cylinder via the connecting rod mechanism.

[0008] By adopting the above technical solution, the pressure roller device can transform the linear motion of the limit cylinder into the complex motion of the linkage mechanism, thereby driving the limit rod to achieve stable position adjustment. This design ensures that the pressure roller device can accurately and reliably maintain contact with the surface of the workpiece being tested during the inspection process, improving the accuracy and stability of crack detection.

[0009] In one specific implementation scheme, the linkage mechanism includes a first link and a second link, a support plate is mounted on the limiting cylinder, a support block is mounted on the support plate, one end of the first link is hinged to the support block, the other end of the first link is hinged to the limiting rod, one end of the second link is hinged to the piston rod of the limiting cylinder, and the other end of the second link is hinged to one end of the limiting rod.

[0010] By adopting the above technical solution, the linkage mechanism includes a first linkage and a second linkage. A support plate and a support block are provided on the limiting cylinder, enabling the first linkage to stably connect the support block and the limiting rod. The second linkage connects the piston rod of the limiting cylinder and the limiting rod. This structural design achieves precise motion transmission driven by the limiting cylinder, ensuring that the limiting rod maintains a stable force state during the detection process, thereby improving the scanning accuracy and stability of the pressure roller device on the cylinder liner or piston surface.

[0011] In one specific implementation, a third connecting rod is also included, with a limiting block installed on the piston rod of the limiting cylinder. One end of the third connecting rod is hinged to the limiting block, and the other end of the third connecting rod is hinged to the first connecting rod. One end of the second connecting rod is hinged to the limiting block, thereby being hinged to the output shaft of the limiting cylinder.

[0012] By adopting the above technical solution, the cooperation between the limiting block on the piston rod of the limiting cylinder and the third and second connecting rods enables more precise motion control of the limiting rod. Specifically, the third connecting rod connects the limiting block and the first connecting rod, enhancing the stability of the entire linkage mechanism and ensuring the limiting rod remains stable during movement, avoiding detection errors caused by vibration or impact. Simultaneously, the hinged design between the second connecting rod and the limiting block further optimizes the force transmission path, ensuring that the power output from the limiting cylinder can be efficiently and accurately converted into the movement of the limiting rod, thereby improving the reliability and accuracy of the pressure roller device during the scanning and detection process.

[0013] In one specific implementation, there are two third links, with one end of each third link hinged to both sides of the limiting block and the other end hinged to both sides of the first link.

[0014] By adopting the above technical solution, the two third links are hinged to both sides of the limiting block and both sides of the first link, respectively, making the force distribution of the entire linkage mechanism more uniform and improving the stability of the limiting rod movement. This design effectively avoids the possible offset or twisting of a single third link, thereby ensuring that the pressure roller device can maintain more precise position control during operation and improving the reliability and accuracy of cylinder liner or piston surface detection.

[0015] In one specific implementation scheme, the limiting block is configured as an L-shaped block, one end of the third connecting rod is hinged to the middle part of the limiting block, the other end of the third connecting rod is hinged to the end of the first connecting rod near the limiting rod, and one end of the second connecting rod is hinged to the end of the piston rod axis of the limiting block perpendicular to the limiting cylinder.

[0016] By adopting the above technical solution, the L-shaped limiting block design effectively improves the stability of the structure and ensures a more precise connection between the third link, the first link, and the second link. One end of the third link is hinged to the middle of the limiting block, and the other end is hinged to the end of the first link near the limiting rod. This arrangement makes the force transmission more uniform and reduces vibration and deviation during movement. One end of the second link is hinged to the piston rod axis of the vertical limiting cylinder of the limiting block, further optimizing the direction of force application and ensuring the smoothness and accuracy of the limiting rod's movement. This improves the reliability and accuracy of the pressure roller device in detecting surface cracks on the workpiece.

[0017] In one specific implementation, the positioning rod is installed at the middle part of the mounting bracket, corresponding to the piston rod of the limiting cylinder.

[0018] In one specific implementation, a positioning rod is also included. The positioning rod is mounted on the support plate and has a positioning rod opening. The positioning rod is installed along the extension and retraction direction of the piston rod of the limiting cylinder. A positioning rod is installed on the third connecting rod and the positioning rod is slidably connected inside the positioning rod.

[0019] By adopting the above technical solution, the positioning rod is installed on the support plate, and a limiting groove is opened on the positioning rod along the extension and retraction direction of the piston rod of the limiting cylinder. At the same time, the positioning rod on the third link is slidably connected in the positioning rod, which can effectively limit the movement trajectory of the third link, ensure its movement stability and accuracy, and avoid the piston rod from loosening after long-term use of the limiting cylinder, which would cause poor positioning effect.

[0020] In one specific implementation, the end of the limiting rod opposite to the linkage mechanism is rotatably connected to a pressure roller.

[0021] By adopting the above technical solution, the pressure roller is rotated and connected to the end of the limit rod away from the linkage mechanism, so that the pressure roller can make rolling contact with the surface of the workpiece during the detection process, thereby reducing friction, avoiding damage to the surface of the workpiece, and ensuring the stability of the detection process.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By cooperating with the limit cylinder and the linkage mechanism, precise control of the limit rod is achieved, ensuring stable contact between the workpiece being inspected and the sensor, thereby improving the inspection progress and reliability;

[0024] 2. The linkage mechanism design ensures that the pressure roller device has good coordination during movement, enabling it to work on complex workpiece surfaces and achieve uniform scanning motion;

[0025] 3. The overall structure is compact and highly automated, which significantly improves the detection effect compared with manual transmission adjustment or a single start mechanism. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Limiting cylinder; 3. Linkage mechanism; 31. First link; 32. Second link; 33. Third link; 34. Limiting block; 4. Limiting rod; 5. Positioning rod; 6. Pressure roller. Detailed Implementation

[0028] This application discloses a pressure roller device for a cylinder liner piston surface crack detector.

[0029] like Figure 1 As shown, the pressure roller 6 device of the cylinder liner piston surface crack detector includes a mounting bracket 1, a limiting cylinder 2, a connecting rod mechanism 3, and a limiting rod 4. The mounting bracket 1 is used to fix the entire device and is installed on the monitor. The limiting cylinder 2 is installed on the mounting bracket 1 to provide power. The limiting rod 4 is installed on the limiting cylinder 2 and can be moved by the piston rod of the limiting cylinder 2 to position the workpiece.

[0030] Mounting bracket 1 includes a base plate and support columns. The base plate is made of high-strength aluminum alloy, which has good rigidity and corrosion resistance, and can be firmly installed on the testing instrument. The support columns are fixed to the base plate with bolts, facilitating height and orientation adjustment.

[0031] The linkage mechanism 3 includes a first link 31, a second link 32, and a third link 33. A support plate is mounted on the upper end of the limiting cylinder 2. A through hole is opened on the support plate corresponding to the piston rod of the limiting cylinder 2, allowing the piston rod of the limiting cylinder 2 to move through the through hole in the support plate. A support block is mounted on the support plate. One end of the first link 31 is hinged to the support block, and the other end is hinged to the limiting rod 4. A limiting block 34 is mounted on the piston rod of the limiting cylinder 2. The limiting block 34 is an L-shaped block. One end of the third link 33 is hinged to the middle part of the limiting block 34, and the other end is hinged to the end of the first link 31 near the limiting rod 4. One end of the second link 32 is hinged to the end of the limiting block 34 perpendicular to the axis of the piston rod of the limiting cylinder 2, and the other end is hinged to the limiting rod 4.

[0032] It also includes a positioning rod 5, which is mounted on a support plate. A positioning groove is provided on the limiting rod 4, which is positioned along the extension / retraction direction of the piston rod of the limiting cylinder 2. A corresponding positioning block is mounted on the third connecting rod 33, and the positioning block is slidably connected within the positioning groove, thereby allowing the movement of the positioning rod through the groove.

[0033] In this embodiment of the application, a pressure roller 6 is also included. The pressure roller 6 is installed on the end of the limiting rod 4 away from the linkage mechanism 3, and the pressure roller 6 is rotatably connected to the limiting rod 4 through a rotating shaft.

[0034] The implementation principle of the pressure roller 6 device in the cylinder liner piston surface crack detector of this application embodiment is as follows: a stable driving force is provided by the limiting cylinder 2, which is transmitted to the limiting rod 4 via the linkage mechanism 3, ultimately driving the pressure roller 6 to achieve stable contact with the workpiece being tested. Due to the reasonable design of the linkage mechanism 3, it can coordinate movement in multiple directions, avoiding the lack of flexibility inherent in a single pneumatic mechanism. Furthermore, the elastic characteristics of the pressure roller 6 can effectively compensate for the unevenness of the workpiece surface, thereby significantly improving the detection accuracy and stability. Simultaneously, by adding a positioning block structure, the positioning accuracy and motion stability of the pressure roller 6 device are further improved. The presence of the positioning groove not only limits the movement range of the pressure roller 6 but also avoids malfunctions caused by external interference.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pressure roller (6) device for a cylinder liner piston surface crack detector, characterized in that: It includes a mounting bracket (1), a limiting cylinder (2), a linkage mechanism (3), and a limiting rod (4). The mounting bracket (1) is mounted on the detector, the limiting cylinder (2) is mounted on the mounting bracket (1), and the limiting rod (4) is mounted on the piston rod of the limiting cylinder (2) through the linkage mechanism (3).

2. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 1, characterized in that: The linkage mechanism (3) includes a first link (31) and a second link (32). A support plate is installed on the limiting cylinder (2), and a support block is installed on the support plate. One end of the first link (31) is hinged to the support block, and the other end of the first link (31) is hinged to the limiting rod (4). One end of the second link (32) is hinged to the piston rod of the limiting cylinder (2), and the other end of the second link (32) is hinged to one end of the limiting rod (4).

3. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 2, characterized in that: It also includes a third connecting rod (33), a limiting block (34) is installed on the piston rod of the limiting cylinder (2), one end of the third connecting rod (33) is hinged to the limiting block (34), the other end of the third connecting rod (33) is hinged to the first connecting rod (31), and one end of the second connecting rod (32) is hinged to the limiting block (34), thereby being hinged to the output shaft of the limiting cylinder (2).

4. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 3, characterized in that: There are two third links (33), one end of each third link (33) is hinged to both sides of the limiting block (34), and the other end is hinged to both sides of the first link (31).

5. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 3, characterized in that: The limiting block (34) is configured as an L-shaped block. One end of the third connecting rod (33) is hinged to the middle part of the limiting block (34), and the other end of the third connecting rod (33) is hinged to the end of the first connecting rod (31) near the limiting rod (4). One end of the second connecting rod (32) is hinged to the end of the piston rod axis of the vertical limiting cylinder (2) of the limiting block (34).

6. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 3, characterized in that: It also includes a positioning rod (5), which is mounted on the support plate. The positioning rod (5) is provided on the positioning rod (5) and is installed along the extension and retraction direction of the piston rod of the limiting cylinder (2). The positioning rod (5) is installed on the third connecting rod (33) and is slidably connected inside the positioning rod (5).

7. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 6, characterized in that: The positioning rod (5) is installed in the middle of the support plate and is set in accordance with the piston rod of the limiting cylinder (2).

8. The pressure roller (6) device of the cylinder liner piston surface crack detector according to claim 1, characterized in that: The limiting rod (4) is rotatably connected to a pressure wheel (6) at one end away from the linkage mechanism (3).

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