Engine cylinder head snap ring groove depth detection device
By designing an engine cylinder head retaining ring groove depth detection device, which adopts an inclined measuring plate and a multi-axis structure, non-destructive retaining ring groove depth detection is achieved, solving the problem of high detection cost in existing technologies and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQINGZHICHENG MACHINERY CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-29
Smart Images
Figure CN224302963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle engines, specifically to a device for detecting the depth of the retaining ring groove in an engine cylinder head. Background Technology
[0002] The circlip groove is a crucial part of the engine cylinder head. It's located within the cylindrical bore of the cylinder head, and its depth needs to be measured during machining. Currently, however, measuring the circlip groove depth requires dissecting the cylinder head, rendering it unusable and requiring scrapping. This results in extremely high costs for circlip groove depth measurement, consequently increasing production costs.
[0003] Therefore, there is a need for a device that can detect the depth of the retaining ring groove in the engine cylinder head without damaging the engine cylinder head. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for detecting the depth of the retaining ring groove in an engine cylinder head. This device can directly detect the depth of the retaining ring groove without scrapping the engine cylinder head.
[0005] The purpose of this utility model is achieved by the following solution: A device for detecting the depth of a retaining ring groove in an engine cylinder head, comprising a measuring plate, wherein the measuring plate is inclined, the lower end face of the measuring plate makes an angle α with the horizontal plane, a mounting through hole perpendicular to the ground is provided in the center of the measuring plate, an outer sleeve is provided in the mounting through hole, the upper end of the outer sleeve is installed in the mounting through hole, and the lower end of the outer sleeve is installed in a cylindrical hole in the engine cylinder head, a second mounting through hole axially penetrating the outer sleeve is provided in the center of the outer sleeve, the second mounting through hole is a stepped hole, the upper end of the second mounting through hole is a small diameter hole, the lower end of the second mounting through hole is a large diameter hole, a mounting hole radially penetrating the outer sleeve is provided in the middle section of the outer sleeve, the mounting hole, the second mounting through hole, and the retaining ring groove are connected. The spring grooves are interconnected. A second measuring shaft is provided at the lower end of the second mounting through hole, and a first measuring shaft is provided at the upper end of the second mounting through hole. The first measuring shaft and the second measuring shaft are connected and fixed. A measuring shaft is provided on the outside of the first measuring shaft. The measuring shaft passes through the first measuring shaft and is positioned above the second measuring shaft. The left and right ends of the measuring shaft are installed in the mounting holes and correspond to the spring grooves. A second connecting groove is provided at the upper end of the second measuring shaft, and a second connecting protrusion is provided on the outside of the second connecting groove. A first connecting groove is provided at the center of the lower end face of the measuring shaft, and a first connecting protrusion is provided on the inside of the first connecting groove. The first connecting protrusion corresponds to the second connecting groove, and the first connecting groove corresponds to the second connecting protrusion.
[0006] The angle α between the measuring plate and the horizontal plane is 6±0.2°.
[0007] The first measuring axis and the second measuring axis are connected and fixed by fixing bolts.
[0008] The axial width of the left and right ends of the measuring shaft is consistent with the axial width of the snap ring groove.
[0009] The two ends of the measuring plate are connected and fixed to the engine cylinder head by locating pins.
[0010] The advantages of this invention are that the detection device has a simple structure and a simple detection method, resulting in low manufacturing costs. It can directly detect the depth of the circlip groove without scrapping the engine cylinder head, thus reducing the detection and production costs of the engine cylinder head. Furthermore, this detection device is applicable to the depth detection of circlip grooves in various similar engine cylinder heads. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a side view of the present invention;
[0013] Figure 3 This is the assembly intention of this utility model;
[0014] Figure 4 This is a top view of the assembly of this utility model. Detailed Implementation
[0015] like Figures 1 to 4As shown, an engine cylinder head retaining ring groove depth detection device includes a measuring plate 1, which is inclined. The angle between the lower end face of the measuring plate 1 and the horizontal plane is α, and the angle α between the measuring plate 1 and the horizontal plane is 6±0.2°, which is the same as the angle between the upper end face of the engine cylinder head 9 and the horizontal plane. The two ends of the measuring plate 1 are connected and fixed to the engine cylinder head 9 by positioning pins 7. A mounting through hole 1-1 perpendicular to the ground is provided in the center of the measuring plate 1. An outer sleeve 2 is provided in the mounting through hole 1-1. The upper end of the outer sleeve 2 is installed in the mounting through hole 1-1, and the lower end of the outer sleeve 2 is installed in the cylindrical hole 10 of the engine cylinder head 9. A second mounting through hole 2-2 axially penetrating the outer sleeve 2 is provided in the center of the outer sleeve 2. The second mounting through hole 2-2 is a stepped hole. The upper end of the second mounting through hole 2-2 is a small diameter hole, and the lower end of the second mounting through hole 2-2 is a large diameter hole. A mounting hole 2-1 radially penetrating the outer sleeve 2 is provided in the middle section of the outer sleeve 2. The mounting hole 2-1 is interconnected with the second mounting through hole 2-2 and the snap ring groove 8. A second measuring shaft 4 is provided at the lower end of the second mounting through hole 2-2, and a first measuring shaft 6 is provided at the upper end of the second mounting through hole 2-2. The first measuring shaft 6 is connected and fixed to the second measuring shaft 4. The first measuring shaft 6 and the second measuring shaft 4 are connected and fixed by fixing bolts 5. A measuring shaft 3 is disposed on the outer side of the first measuring shaft 6. The measuring shaft 3 passes through the first measuring shaft 6 and is positioned above the second measuring shaft 4. The left and right ends of the measuring shaft 3 are installed in the mounting holes 2-1 and correspond to the retaining ring grooves 8. The first measuring shaft 6, the second measuring shaft 4, and the measuring shaft 3 are clearance-fitted with the outer sleeve 2. A second connecting groove 4-1 is disposed on the upper end of the second measuring shaft 4, and a second connecting protrusion 4-2 is disposed on the outer side of the second connecting groove 4-1. A first connecting groove 3-1 is disposed at the center of the lower end face of the measuring shaft 3, and a first connecting protrusion 3-2 is disposed on the inner side of the first connecting groove 3-1. The first connecting protrusion 3-2 corresponds to the second connecting groove 4-1, and the first connecting groove 3-1 corresponds to the second connecting protrusion 4-2. The axial width of the left and right ends of the measuring shaft 3 is consistent with the axial width of the retaining ring groove 8.
[0016] The following is the method of using the testing device of this utility model: Place the measuring plate on the engine cylinder head and fix the measuring plate with the positioning pin. First, press down the outer sleeve and pull the first measuring shaft upward. The second measuring shaft will follow the first measuring shaft upward and retract into the outer sleeve. Place the outer sleeve into the mounting through hole of the measuring plate and the cylindrical hole of the cylinder head. Then, press down the first measuring shaft. The second measuring shaft will press down and separate from the measuring shaft. The left and right ends of the measuring shaft will extend out of the outer sleeve and enter the retaining ring groove. Continue to press down the first measuring shaft until it no longer moves axially. At this time, use a depth measuring ruler to measure the height difference between the upper end face of the outer sleeve and the upper end face of the measuring plate. If the height difference between the upper end face of the outer sleeve and the upper end face of the measuring plate is 0±0.3mm, the depth of the retaining ring groove of the engine cylinder head is qualified. If it is not within this size range, the depth of the retaining ring groove of the engine cylinder head is unqualified.
[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A device for detecting the depth of the retaining ring groove in an engine cylinder head, characterized in that: Including the measuring plate (1) The measuring plate (1) is inclined, and the angle between the lower end face of the measuring plate (1) and the horizontal plane is α. A mounting through hole (1-1) perpendicular to the ground is provided in the center of the measuring plate (1). An outer sleeve (2) is provided in the mounting through hole (1-1). The upper end of the outer sleeve (2) is installed in the mounting through hole (1-1), and the lower end of the outer sleeve (2) is installed in the cylindrical hole (10) of the engine cylinder head (9). A second mounting through hole (2-2) axially penetrates the outer sleeve (2) in the center of the outer sleeve (2). The second mounting through hole (2-2) is a stepped hole. The upper end of the second mounting through hole (2-2) is a small diameter hole, and the lower end of the second mounting through hole (2-2) is a large diameter hole. A mounting hole (2-1) radially penetrates the outer sleeve (2) in the middle section of the outer sleeve (2). The mounting hole (2-1) is connected to the second mounting through hole (2-2) and the snap ring groove (8). A second measuring through hole (2-2) is provided at the lower end of the second mounting through hole (2-2). The measuring shaft (4) is provided with a first measuring shaft (6) at the upper end of the second mounting through hole (2-2). The first measuring shaft (6) is connected and fixed to the second measuring shaft (4). A measuring shaft (3) is provided on the outside of the first measuring shaft (6). The measuring shaft (3) passes through the first measuring shaft (6) and is located above the second measuring shaft (4). The left and right ends of the measuring shaft (3) are installed in the mounting hole (2-1) and correspond to the snap ring groove (8). A second connecting groove (4-1) is provided at the upper end of the second measuring shaft (4). A second connecting protrusion (4-2) is provided on the outside of the second connecting groove (4-1). A first connecting groove (3-1) is provided at the center of the lower end face of the measuring shaft (3). A first connecting protrusion (3-2) is provided on the inside of the first connecting groove (3-1). The first connecting protrusion (3-2) corresponds to the second connecting groove (4-1). The first connecting groove (3-1) corresponds to the second connecting protrusion (4-2).
2. The engine cylinder head retaining ring groove depth detection device according to claim 1, characterized in that: The angle α between the measuring plate (1) and the horizontal plane is 6±0.2°.
3. The engine cylinder head retaining ring groove depth detection device according to claim 1, characterized in that: The first measuring shaft (6) and the second measuring shaft (4) are connected and fixed by fixing bolts (5).
4. The engine cylinder head retaining ring groove depth detection device according to claim 1, characterized in that: The axial width of the left and right ends of the measuring shaft (3) is consistent with the axial width of the snap ring groove (8).
5. The engine cylinder head retaining ring groove depth detection device according to claim 1, characterized in that: The two ends of the measuring plate (1) are connected and fixed to the engine cylinder head (9) by positioning pins (7).